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Earnings Per Share - Schedule of Potential Shares Excluded from Calculation of Diluted Net Earnings (Loss) Per Share (Details) - shares shares in Thousands	12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total anti-dilutive shares (in shares)	0	33,651	30,631
Series B Convertible Preferred Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total anti-dilutive shares (in shares)	0	29,103	27,691
Common stock equivalents
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total anti-dilutive shares (in shares)	0	4,548	2,940

Leases - Schedule of Future Minimum Lease Payments (Details) $ in Thousands	Jun. 30, 2026 USD ($)
Operating Leases
Year 1	$ 77,516
Year 2	69,533
Year 3	60,689
Year 4	51,357
Year 5	40,652
Thereafter	74,763
Total minimum lease payments	374,510
Less: amounts representing interest	58,300
Present value of total lease liabilities	316,210
Finance Leases
Year 1	2,847
Year 2	2,925
Year 3	3,006
Year 4	3,088
Year 5	3,173
Thereafter	1,521
Total minimum lease payments	16,560
Less: amounts representing interest	2,327
Present value of total lease liabilities	14,233
Total
Year 1	80,363
Year 2	72,458
Year 3	63,695
Year 4	54,445
Year 5	43,825
Thereafter	76,284
Total minimum lease payments	391,070
Less: amounts representing interest	60,627
Present value of total lease liabilities	$ 330,443

Restructuring Plans (Tables)

12 Months Ended

Jun. 30, 2026

Restructuring and Related Activities [Abstract]

Schedule of Components of Restructuring Charges and Payments and Other Deductions

Activity and accrual balances for the 2023 Plan were as follows ($000):



	Severance		Asset Write-Offs		Other		Total Accrual
Balance - June 30, 2024	$	51,061	$	—	$	—	$	51,061
Restructuring charges	6,123		24,010		22,864		52,997


Payments	(12,954)		—		—		(12,954)
Asset write-offs and other	—		(24,010)		(22,864)		(46,874)
Balance - June 30, 2025	44,230		—		—		44,230
Restructuring charges (recoveries)	(11,349)		250		11,992		893


Payments	(5,336)		—		—		(5,336)
Asset write-offs and other	1,035		(250)		(11,992)		(11,207)
Balance - June 30, 2026	$	28,580	$	—	$	—	$	28,580

Activity and accrual balances for the 2025 Plan were as follows ($000):



	Severance		Asset Write-Offs		Other		Total Accrual
Balance - June 30, 2024	$	—	$	—	$	—	$	—
Restructuring charges	23,983		59,068		24,033		107,084
Payments	(7,261)		(48,574)		(4,136)		(59,971)
Asset write-offs and other	—		—		—		—
Balance - June 30, 2025	16,722		10,494		19,897		47,113
Restructuring charges	27,583		26,068		8,846		62,497
Payments	(20,652)		—		—		(20,652)
Asset write-offs and other	(1,122)		(26,788)		(16,512)		(44,422)
Balance - June 30, 2026	$	22,531	$	9,774	$	12,231	$	44,536

Segment and Geographic Reporting - Schedule of Capital Expenditures, Depreciation and Amortization by Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
Segment Reporting [Line Items]
Depreciation and amortization	$ 521,895	$ 553,598	$ 559,761
Operating Segments \| Datacenter & Communications
Segment Reporting [Line Items]
Depreciation and amortization	212,560	209,293	213,693
Operating Segments \| Industrial
Segment Reporting [Line Items]
Depreciation and amortization	304,960	339,377	340,601
Corporate Segment
Segment Reporting [Line Items]
Depreciation and amortization	$ 4,375	$ 4,928	$ 5,467

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

Income Taxes - Schedule of Net Income Taxes Paid (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
Income Tax Paid, by Individual Jurisdiction [Line Items]
Federal	$ 14,882
State	3,274
Cash paid for income taxes	208,129	$ 166,849	$ 97,295
China
Income Tax Paid, by Individual Jurisdiction [Line Items]
Foreign	66,107
Germany
Income Tax Paid, by Individual Jurisdiction [Line Items]
Foreign	28,368
Switzerland
Income Tax Paid, by Individual Jurisdiction [Line Items]
Foreign	24,894
Sweden
Income Tax Paid, by Individual Jurisdiction [Line Items]
Foreign	15,977
Korea
Income Tax Paid, by Individual Jurisdiction [Line Items]
Foreign	13,656
Malaysia
Income Tax Paid, by Individual Jurisdiction [Line Items]
Foreign	11,314
Other foreign jurisdictions
Income Tax Paid, by Individual Jurisdiction [Line Items]
Foreign	$ 29,657

Consolidated Statements of Shareholders' Equity and Mezzanine Equity - USD ($) $ in Thousands	Total	Common Stock	Preferred Stock	AOCI	Retained Earnings	Treasury Stock	NCI
Beginning balance, Common Stock (in shares) at Jun. 30, 2023		154,721,000
Balance-beginning of period at Jun. 30, 2023	$ 4,987,551	$ 3,781,211	$ 445,319	$ 109,726	$ 944,416	$ (293,121)	$ 0
Beginning balance, Preferred Stock (in shares) at Jun. 30, 2023			2,300,000
Beginning balance, Treasury Stock, (in shares) at Jun. 30, 2023						(15,137,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based and deferred compensation (in shares)		3,447,000				492,000
Share-based and deferred compensation activities	144,799	$ 166,800				$ (22,001)
Coherent acquisition	0
Conversion of Series A preferred stock (in shares)		10,240,000	2,300,000
Conversion of Series A preferred stock		$ 445,319	$ (445,319)
Net earnings (loss)	(158,764)				(156,154)		(2,610)
Foreign currency translation adjustments	(81,889)			(82,318)			429
Change in fair value of interest rate instruments, net of taxes	(20,196)			(20,196)
Pension adjustment, net of taxes	(7,443)			(7,443)
Dividends	(123,322)				(123,322)
Sale of shares of noncontrolling interests, net of issuance costs of $31,840 and taxes of $127,389	840,771	$ 464,327		2,871			373,573
Ending balance, Common Stock (in shares) at Jun. 30, 2024		168,408,000
Balance-end of period at Jun. 30, 2024	$ 5,581,507	$ 4,857,657	$ 0	2,640	664,940	$ (315,122)	371,392
Ending balance, Preferred Stock (in shares) at Jun. 30, 2024			0
Ending balance, Treasury Stock (in shares) at Jun. 30, 2024						(15,629,000)
Beginning balance (in shares) at Jun. 30, 2023	215,000
Beginning balance at Jun. 30, 2023	$ 2,241,415
Increase (Decrease) in Temporary Equity [Roll Forward]
Dividends	$ 123,357
Ending balance (in shares) at Jun. 30, 2024	215,000
Ending balance at Jun. 30, 2024	$ 2,364,772
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based and deferred compensation (in shares)		3,441,000				665,000
Share-based and deferred compensation activities	146,261	$ 199,204				$ (52,943)
Net earnings (loss)	30,057				49,364		(19,307)
Foreign currency translation adjustments	409,069			407,646			1,423
Change in fair value of interest rate instruments, net of taxes	(31,898)			(31,898)
Pension adjustment, net of taxes	(6,351)			(6,351)
Dividends	(129,930)				(129,930)
Change in deferred tax basis for noncontrolling interests	(693)	$ (693)
Ending balance, Common Stock (in shares) at Jun. 30, 2025		171,849,000
Balance-end of period at Jun. 30, 2025	$ 5,998,022	$ 5,056,168	$ 0	372,037	584,374	$ (368,065)	353,508
Ending balance, Preferred Stock (in shares) at Jun. 30, 2025			0
Ending balance, Treasury Stock (in shares) at Jun. 30, 2025	(16,294,119)					(16,294,000)
Increase (Decrease) in Temporary Equity [Roll Forward]
Dividends	$ 118,489
Ending balance (in shares) at Jun. 30, 2025	215,000
Ending balance at Jun. 30, 2025	$ 2,483,261
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based and deferred compensation (in shares)		2,857,000				569,000
Share-based and deferred compensation activities	151,675	$ 229,093				$ (77,418)
Coherent acquisition	2,506,885
Conversion of Series A preferred stock (in shares)		30,122,000	0
Conversion of Series A preferred stock		$ 2,506,885	$ 0
Net earnings (loss)	786,884				804,998		(18,114)
Foreign currency translation adjustments	(159,065)			(158,376)			(689)
Change in fair value of interest rate instruments, net of taxes	(11,414)			(11,414)
Pension adjustment, net of taxes	1,865			1,865
Dividends	(35,102)				(35,102)
Sale of shares net of issuance costs (in shares)		7,788,000
Sale of shares of noncontrolling interests, net of issuance costs of $31,840 and taxes of $127,389	1,998,450	$ 1,998,450
Ending balance, Common Stock (in shares) at Jun. 30, 2026		212,616,000
Balance-end of period at Jun. 30, 2026	$ 11,238,200	$ 9,790,596	$ 0	$ 204,112	$ 1,354,270	$ (445,483)	$ 334,705
Ending balance, Preferred Stock (in shares) at Jun. 30, 2026			0
Ending balance, Treasury Stock (in shares) at Jun. 30, 2026	(16,863,102)					(16,863,000)
Increase (Decrease) in Temporary Equity [Roll Forward]
Conversion of series A preferred stock (in shares)	(215,000)
Conversion of Series A preferred stock	$ (2,506,885)
Dividends	$ 23,624
Ending balance (in shares) at Jun. 30, 2026	0
Ending balance at Jun. 30, 2026	$ 0

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
Cash Flows from Operating Activities
Net earnings (loss)	$ 786,884	$ 30,057	$ (158,764)
Adjustments to reconcile net earnings (loss) to net cash provided by operating activities:
Depreciation	241,561	250,810	271,601
Amortization	280,334	302,788	288,160
Share-based compensation expense	186,468	160,239	126,049
Non-cash restructuring and impairment charges	87,563	140,912	16,557
Amortization of debt issuance costs	17,560	19,774	17,652
Loss on disposals of property, plant & equipment	599	782	758
Unrealized losses (gains) on foreign currency remeasurements and transactions	(24,792)	33,122	(10,556)
Loss (earnings) from equity investments	(690)	(1,316)	51
Deferred income taxes	(198,732)	(95,434)	(112,096)
Gain on sale of business	(124,133)	0	0
Gain on sale of equity investment	(73,998)	0	0
Loss on debt extinguishment	3,056	0	1,978
Increase (decrease) in cash from changes in:
Accounts receivable	(367,631)	(170,444)	60,581
Inventories	(1,183,000)	(202,728)	(23,196)
Accounts payable	748,533	217,357	205,044
Contract liabilities	(9,307)	3,182	(72,818)
Income taxes	18,175	(22,118)	12,251
Accrued compensation and benefits	99,397	62,960	36,894
Other operating net assets (liabilities)	(408,333)	(96,343)	(114,415)
Net cash provided by operating activities	79,514	633,600	545,731
Cash Flows from Investing Activities
Additions to property, plant & equipment	(1,102,909)	(440,836)	(346,816)
Purchases of intangible assets	(7,174)	0	0
Proceeds from sale of equity investment	89,384	0	0
Proceeds from the sale of business, net of fees	436,992	27,000	0
Purchases of short-term investments	(1,025,000)	0	0
Proceeds from sales/maturities of short-term investments	200,000	0	0
Other investing activities	(5,017)	(379)	(3,897)
Net cash used in investing activities	(1,413,724)	(414,215)	(350,713)
Cash Flows from Financing Activities
Sale of shares to noncontrolling interests	0	0	1,000,000
Proceeds from borrowings of revolving credit facilities	640,075	53,729	18,966
Proceeds from borrowings of other credit facilities	28,004	0	0
Proceeds from issuance of common shares	1,998,552	0	0
Payments on existing debt	(1,723,437)	(436,986)	(228,802)
Payments on borrowings under revolving credit facilities	(676,211)	(51,661)	(19,027)
Debt issuance costs	(9,101)	0	0
Equity issuance costs	0	0	(31,840)
Proceeds from exercises of stock options and purchases of stock under employee stock purchase plan	53,814	49,570	42,297
Payments in satisfaction of employees’ minimum tax obligations	(77,419)	(53,992)	(22,315)
Cash dividends paid	(11,438)	(11,438)	0
Other financing activities	970	(948)	(1,007)
Net cash provided by (used in) financing activities	1,477,076	(451,726)	758,272
Effect of exchange rate changes on cash, cash equivalents, and restricted cash	(7,383)	75,568	(1,170)
Net increase (decrease) in cash, cash equivalents, and restricted cash	135,483	(156,773)	952,120
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period	1,632,913	1,789,686	837,566
Cash, Cash Equivalents, and Restricted Cash at End of Period	1,768,396	1,632,913	1,789,686
Supplemental Information
Cash paid for interest	189,256	256,704	312,879
Cash paid for income taxes	208,129	166,849	97,295
Non-Cash Investing and Financing Activities:
Additions to property, plant & equipment included in accounts payable	371,779	67,146	63,286
Conversion of Series A and B preferred stock to common stock	2,506,885	0	445,319
Reconciliation of Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents
Cash and cash equivalents	1,162,018	909,200
Restricted cash, current	35,156	8,897
Restricted cash, non-current	571,222	714,816
Total cash, cash equivalents, and restricted cash shown in the Consolidated Statements of Cash Flows	1,768,396	1,632,913	1,789,686
Term A Loan
Cash Flows from Financing Activities
Proceeds from borrowing of credit facility	1,250,000	0	0
Term B Loan
Cash Flows from Financing Activities
Proceeds from borrowing of credit facility	$ 3,267	$ 0	$ 0

Noncontrolling Interests - Schedule of Noncontrolling Interests Activity (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
Equity, Attributable to Noncontrolling Interest [Roll Forward]
Balance-beginning of period	$ 5,998,022	$ 5,581,507	$ 4,987,551
Share of foreign currency translation adjustments	(159,065)	409,069	(81,889)
Net loss	786,884	30,057	(158,764)
Balance-end of period	11,238,200	5,998,022	5,581,507
NCI
Equity, Attributable to Noncontrolling Interest [Roll Forward]
Balance-beginning of period	353,508	371,392	0
Share of foreign currency translation adjustments	(689)	1,423	429
Net loss	(18,114)	(19,307)	(2,610)
Balance-end of period	334,705	353,508	371,392
NCI \| Silicon Carbide
Equity, Attributable to Noncontrolling Interest [Roll Forward]
Balance-beginning of period	353,508	371,392
Share of foreign currency translation adjustments	(689)	1,423
Net loss	(18,114)	(19,307)
Balance-end of period	$ 334,705	$ 353,508	$ 371,392

- Definition

The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Amount of equity (deficit) attributable to parent and noncontrolling interest. Excludes temporary equity.

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Reference 38: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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Reference 39: http://www.xbrl.org/2003/role/disclosureRef
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Reference 41: http://www.xbrl.org/2003/role/disclosureRef
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Reference 42: http://www.xbrl.org/2003/role/disclosureRef
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Reference 47: http://www.xbrl.org/2003/role/disclosureRef
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Reference 48: http://www.xbrl.org/2003/role/disclosureRef
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Reference 53: http://www.xbrl.org/2003/role/disclosureRef
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Reference 55: http://www.xbrl.org/2003/role/disclosureRef
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Reference 56: http://www.xbrl.org/2003/role/disclosureRef
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Reference 57: http://www.xbrl.org/2003/role/disclosureRef
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Reference 58: http://www.xbrl.org/2003/role/disclosureRef
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Reference 69: http://www.xbrl.org/2003/role/disclosureRef
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Reference 74: http://www.xbrl.org/2003/role/disclosureRef
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Reference 75: http://www.xbrl.org/2003/role/disclosureRef
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-URI https://asc.fasb.org/1943274/2147481538/470-20-65-4

+ Details

Subsequent Events (Details) - Subsequent Event - Unsecured Debt $ in Millions	Aug. 12, 2026 USD ($)
Local Currency Tranche
Subsequent Event [Line Items]
Aggregate amount of credit facility	$ 470
Local Currency Tranche \| Local Currency Benchmark Rate
Subsequent Event [Line Items]
Basis spread on variable rate	0.71%
U.S. Dollar Tranche
Subsequent Event [Line Items]
Aggregate amount of credit facility	$ 475
U.S. Dollar Tranche \| Secured Overnight Financing Rate (SOFR)
Subsequent Event [Line Items]
Basis spread on variable rate	(0.20%)
August 2026 Facility
Subsequent Event [Line Items]
Aggregate amount of credit facility	$ 945
Term of loan	36 months

Goodwill and Other Intangible Assets - Schedule of Estimated Amortization Expense for Existing Intangible Assets (Details) $ in Thousands	Jun. 30, 2026 USD ($)
Intangible Asset, Goodwill and Other [Abstract]
2027	$ 277,273
2028	242,596
2029	274,005
2030	251,941
2031	$ 240,404

Debt - Senior Notes (Details) - Senior Notes - 5.00% Senior Notes - USD ($) $ in Millions		12 Months Ended
	Dec. 10, 2021	Jun. 30, 2026	Jun. 30, 2025
Debt Instrument [Line Items]
Interest rate on debt	5.00%	5.00%
Aggregate principal amount of bridge loan	$ 990
Interest expense incurred		$ 51	$ 50
Senior Notes, Redemption, Period One
Debt Instrument [Line Items]
Redemption price, percentage of principal amount	100.00%
Senior Notes, Redemption, Period Two
Debt Instrument [Line Items]
Redemption percentage	40.00%
Senior Notes, Redemption, Period Three
Debt Instrument [Line Items]
Redemption price, percentage of principal amount	105.00%

Share-Based Compensation - Schedule of Stock Option and Cash-Based Stock Appreciation Rights (Details)	12 Months Ended
	Jun. 30, 2026 $ / shares shares
Number of Shares
Outstanding, beginning balance (in shares) \| shares	897,096
Exercised (in shares) \| shares	(518,994)
Forfeitures and Expired (in shares) \| shares	(1,566)
Outstanding, ending balance (in shares) \| shares	376,536
Exercisable (in shares) \| shares	376,536
Weighted Average Exercise Price
Outstanding, beginning balance (in usd per share) \| $ / shares	$ 35.43
Exercised (in usd per share) \| $ / shares	32.82
Forfeited and Expired (in usd per share) \| $ / shares	17.84
Outstanding, ending balance (in usd per share) \| $ / shares	39.10
Exercisable (in usd per share) \| $ / shares	$ 39.10
Cash-Based Stock Appreciation Rights
Number of Rights
Outstanding, beginning balance (in shares) \| shares	25,133
Exercised (in shares) \| shares	(8,695)
Forfeited and Expired (in shares) \| shares	0
Outstanding, ending balance (in shares) \| shares	16,438
Exercisable (in shares) \| shares	16,438
Weighted Average Exercise Price
Outstanding, beginning balance (in usd per share) \| $ / shares	$ 36.93
Exercised (in usd per share) \| $ / shares	38.52
Forfeited and Expired (in usd per share) \| $ / shares	0
Outstanding, ending balance (in usd per share) \| $ / shares	36.08
Exercisable (in usd per share) \| $ / shares	$ 36.08

Employee Benefit Plans - Schedule of Estimated Future Benefit Payments (Details) $ in Thousands	Jun. 30, 2026 USD ($)
Retirement Benefits [Abstract]
2027	$ 11,400
2028	10,500
2029	11,300
2030	12,900
2031	13,700
Next five years	$ 66,600

Segment and Geographic Reporting - Additional Information (Details) - segment	12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
Segment Reporting [Line Items]
Number of reporting segments	2	3
Revenue from Contract with Customer Benchmark \| Customer Concentration Risk \| Major Customer
Segment Reporting [Line Items]
Concentration risk percentage			10.00%
Revenue from Contract with Customer Benchmark \| Customer Concentration Risk \| Major Customer, One
Segment Reporting [Line Items]
Concentration risk percentage	20.00%	12.00%
Revenue from Contract with Customer Benchmark \| Customer Concentration Risk \| Major Customer, Two
Segment Reporting [Line Items]
Concentration risk percentage	12.00%	10.00%

- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References + Details

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

+ Details

Equity and Redeemable Preferred Stock (Tables)

12 Months Ended

Jun. 30, 2026

Equity [Abstract]

Schedule of Dividends

The following table presents dividends per share and dividends recognized:



	Year Ended June 30, 2026		Year Ended June 30, 2025


Dividends per share to preferred shareholders	$	163	$	604
Preferred stock dividends ($000)	31,751		123,688
Preferred stock deemed dividends ($000)	3,351		6,238

Inventories

12 Months Ended

Jun. 30, 2026

Inventory Disclosure [Abstract]

Inventories

The components of inventories were as follows ($000):



June 30,	2026		2025

Raw materials	$	660,487	$	394,682
Work in progress	1,556,956		824,360
Finished goods	363,600		218,594
Total inventories	$	2,581,043	$	1,437,636

Noncontrolling Interests

12 Months Ended

Jun. 30, 2026

Noncontrolling Interest [Abstract]

Noncontrolling Interests

On December 4, 2023, Silicon Carbide LLC (“Silicon Carbide”), one of the Company’s subsidiaries, completed (i) the sale of 16,666,667 Class A Common Units to Denso Corporation (“Denso”) for $500,000,000 pursuant to an Investment Agreement, dated as of October 10, 2023, by and between Silicon Carbide and Denso and (ii) the sale of 16,666,667 Class A Common Units to Mitsubishi Electric Corporation (“MELCO”) for $500,000,000 pursuant to an Investment Agreement, dated as of October 10, 2023, by and between Silicon Carbide and MELCO (collectively, the “Equity Investments”).

As a result of the Equity Investments, the Company’s ownership interest in the Class A Common units of Silicon Carbide LLC was reduced to approximately 75%. Denso and MELCO each own approximately 12.5% of the Class A Common Units of Silicon Carbide.

The Equity Investments in Silicon Carbide enables Coherent to increase its available free cash flow to provide greater financial and operational flexibility to execute its capital allocation priorities, as the aggregate $1 billion investment, net of transaction costs, is being and will continue to be used to fund future capital expansion of Silicon Carbide.

The following table presents the activity in noncontrolling interests in Silicon Carbide ($000):



Year Ended June 30,	2026		2025


Balance-beginning of period	$	353,508	$	371,392

Share of foreign currency translation adjustments	(689)		1,423
Net loss	(18,114)		(19,307)
Balance-end of period	$	334,705	$	353,508

Segment and Geographic Reporting

12 Months Ended

Jun. 30, 2026

Segment Reporting [Abstract]

Segment and Geographic Reporting

The Company’s businesses are organized and managed into segments based on similarities in products and services. Segment determination reflects how the CODM evaluates the Company’s operations for decision-making operating decisions and performance assessment. Effective July 1, 2025, the Company realigned its organizational structure and now identifies multiple operating segments, which are aggregated into two reportable segments: (i) Datacenter & Communications, and (ii) Industrial. In accordance with ASC 280, Segment Reporting, the aggregation of the Company’s segments is based on similarities in economic characteristics, product and service types, production processes, type or class of customers, and distribution methods. Previously, financial results had been reported in the following three segments: (i) Networking, (ii) Materials, and (iii) Lasers. Comparative prior period segment information has been recast to conform to the new segments.

The Datacenter & Communications segment has locations in the United States, Australia, China, Germany, Malaysia, South Korea, Sweden, Switzerland, Thailand, the Philippines and Vietnam. This segment sells primarily into the datacenter and communications market, including transceivers, co-packaged optics, optical circuit switches, systems, subsystems, modules, components, optics, and semiconductor devices.

The Industrial segment has locations in the United States, China, Finland, Germany, Italy, Japan, Malaysia, Singapore, South Korea, Spain, Sweden, Taiwan, the Philippines, the United Kingdom and Vietnam. This segment sells primarily into the industrial market, which includes lasers, systems, optics, components and materials for semiconductor and display capital equipment, precision manufacturing, life sciences, consumer electronics, scientific research and automotive and market applications.

Our CODM, who has been identified as our Chief Executive Officer, receives and reviews financial information based on the operating segments that are aggregated into the two reportable segments. Our CODM evaluates each segment’s performance and allocates resources based on segment revenue and segment profit, as our CODM believes segment profit is a more comprehensive profitability measure for each operating segment. Our CODM is regularly provided with segment revenue and segment profit information to assess performance of each segment. Segment profit includes operating expenses directly managed by operating segments, including research and development, direct sales, marketing and administrative expenses. Segment profit does not include share-based compensation, acquisition or integration related costs, amortization and impairment of acquisition-related intangible assets, restructuring charges, impairment charges on assets held-for-sale, gain on sale of businesses and certain other charges or gains. Additionally, we do not allocate Corporate strategic research and development, strategic marketing and sales expenses and shared general and administrative expenses, as these expenses are not directly attributable to our operating segments. The segments are managed separately due to the unique products and markets that each serves. The Company derives its reportable segment results based on how financial information is reported and aggregated within its management reporting system. The CODM uses segment profit as a key metric in the forecasting process and in making decisions related to capital allocation and resource deployment across segments. The accounting policies are consistent across each segment. Assets by segment are not a measure used to assess the performance of the company by the CODM and thus are not reported in our disclosures.

The following table summarizes selected financial information of our operations by segment and reconciles segment profit to consolidated earnings (loss) before income taxes for the periods presented ($000):



	Year Ended June 30,
	2026		2025		2024


Segment revenue
Datacenter & Communications	$	5,274,629	$	3,755,164	$	2,631,369
Industrial	1,843,552		2,054,951		2,076,319
Total segment revenue	7,118,181		5,810,115		4,707,688

Intersegment revenue
Datacenter & Communications	40,735		38,584		36,504
Industrial	99,643		77,108		55,098
Elimination of intersegment revenue	(140,378)		(115,692)		(91,602)
Total intersegment revenue	—		—		—

Segment cost of goods sold and operating expenses (1)
Datacenter & Communications	3,985,646		2,889,961		2,167,905
Industrial	1,520,422		1,724,569		1,833,711
Total segment cost of goods sold and operating expenses	5,506,068		4,614,530		4,001,616

Segment profit
Datacenter & Communications	1,329,719		903,787		499,968
Industrial	422,773		407,490		297,706
Total segment profit	1,752,492		1,311,277		797,674

Unallocated Corporate expenses
Corporate and centralized function costs (2)	(296,748)		(274,333)		(179,624)
Share-based compensation	(193,804)		(160,972)		(126,895)
Restructuring costs (3)	(63,390)		(160,081)		(27,054)
Impairment of assets held-for-sale	(64,404)		(84,988)		—
Integration, site consolidation and other costs (4)	(80,084)		(38,237)		(79,820)
Amortization of intangibles	(280,334)		(302,788)		(288,160)
Interest expense	(190,267)		(243,251)		(288,475)


Gain on sale of business	124,133		—		—
Other income, net	140,139		47,554		44,707

Earnings (loss) before income taxes	$	847,733	$	94,181	$	(147,647)

(1)The significant expense category amount aligns with the segment-level information that is regularly provided to the CODM. Segment cost of goods sold and operating expenses primarily include manufacturing costs, labor and research and development costs, and exclude expenses and credits that are included in the Unallocated corporate expenses category.

(2)We do not allocate corporate and centralized function costs that are not directly attributable to our operating segments.

(3)See Note 12. Restructuring Plans for further information.

(4)Integration, site consolidation and other costs are $80 million and $38 million in the years ended June 30, 2026 and June 30, 2025, respectively, and primarily consist of consulting and legal costs related to initiatives to integrate recent acquisitions into common technology systems, to divest businesses and simplify legal entity structure. Integration and site consolidation costs in the year ended June 30, 2024 primarily include consulting costs related to initiatives to integrate recent acquisitions into common technology systems and simplify legal entity structure, and employee severance and retention and other costs related to sites being shut down as part of our 2023 Restructuring Plan or Synergy and Site Consolidation Plan.

The following tables summarizes depreciation and amortization by segment ($000):



	Year Ended June 30,
Depreciation and amortization	2026		2025		2024
Datacenter & Communications	$	212,560	$	209,293	$	213,693
Industrial	304,960		339,377		340,601
Corporate and shared services	4,375		4,928		5,467
Total depreciation and amortization	$	521,895	$	553,598	$	559,761

Geographic information for revenues, by location of the customer’s headquarters, were as follows ($000):



	Revenues
Year Ended June 30,	2026		2025		2024


North America	$	4,633,696	$	3,564,846	$	2,622,569
Europe	814,176		698,800		714,282
China	813,377		680,110		621,918
Japan	390,373		390,610		340,863
Rest of World	466,559		475,749		408,056
Total	$	7,118,181	$	5,810,115	$	4,707,688

Major Customers

One major customer accounted for 20%, 10%, and 10% of consolidated revenue during fiscal 2026, 2025 and 2024, respectively. A second major customer accounted for 12% of consolidated revenue during fiscal 2026. A third major customer accounted for 12% of consolidated revenue during fiscal 2025. Revenue from these customers was primarily attributable to our Datacenter & Communications segment.

Geographic information for long-lived assets by country, which include property, plant and equipment, net of related depreciation, and certain other long-term assets, were as follows ($000):



	Long-Lived Assets
June 30,	2026		2025
United States	$	1,394,823	$	1,092,389
Non-United States
China	968,796		402,960
Malaysia	473,786		196,543
Germany	189,819		189,281
Vietnam	119,145		65,565
Sweden	98,517		51,032
Switzerland	68,031		49,602
Philippines	35,754		25,406
United Kingdom	19,479		20,594
Korea	13,704		16,037
Australia	14,516		9,014
Taiwan	4,266		6,063
Other	31,680		23,044
Total Non-United States	2,037,493		1,055,141
	$	3,432,316	$	2,147,530

- Definition

The entire disclosure for segment reporting.

+ References

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+ Details

Debt (Tables)

12 Months Ended

Jun. 30, 2026

Debt Disclosure [Abstract]

Schedule of Components of Debt

The components of debt as of the dates indicated were as follows ($000):


	June 30, 2026		June 30, 2025
Term A Facility, interest at adjusted SOFR, as defined, plus 1.25%	$	1,140,625	$	624,375

Debt issuance costs, Term A Facility and Revolving Credit Facility	(10,087)		(8,141)
Term B Facility, interest at adjusted SOFR, as defined, plus 1.75%	1,080,000		2,102,358
Debt issuance costs, Term B Facility	(21,228)		(36,478)
Other Credit Facility	28,004		—
Borrowings on local lines of credit	4,791		2,091
Facility construction loan in Germany	14,062		17,682
5.00% Senior Notes	990,000		990,000
Debt Issuance costs and discount, Senior Notes	(3,943)		(4,966)
Total debt	3,222,224		3,686,921
Current portion of long-term debt	(7,916)		(188,306)
Long-term debt, less current portion	$	3,214,308	$	3,498,615

Schedule of Maturities of Long-Term Debt

The required annual principal repayments for all indebtedness for the next five years and thereafter, as of June 30, 2026, is set forth in the following table ($000):


	Year Ending
	June 30,
2027	$	7,916
2028	34,375
2029	93,629
2030	2,135,625
2031	985,937
Thereafter	—
Total	$	3,257,482

Insider Trading Policies and Procedures	12 Months Ended
Insider Trading Policies and Procedures	Jun. 30, 2026
Insider Trading Policies and Procedures [Line Items]
Insider Trading Policies and Procedures Adopted	true

Property, Plant and Equipment (Tables)

12 Months Ended

Jun. 30, 2026

Property, Plant, and Equipment [Abstract]

Schedule of Property, Plant and Equipment

Property, plant and equipment consists of the following ($000):



June 30,	2026		2025

Land and improvements	$	58,996	$	59,543
Buildings and improvements	1,030,787		881,578
Machinery and equipment	2,916,096		2,188,509
Construction in progress	776,511		363,129

	4,782,390		3,492,759
Less accumulated depreciation	(1,783,047)		(1,615,252)
Property, plant and equipment, net	$	2,999,343	$	1,877,507

Nature of Business and Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Jun. 30, 2026
Accounting Policies [Abstract]
Consolidation	Consolidation. The Consolidated Financial Statements include the accounts of the Company and all of its subsidiaries. All significant intercompany accounts and transactions have been eliminated in consolidation. Certain prior year amounts have been reclassified for consistency with the current year presentation.
Use of Estimates	Use of Estimates. The preparation of financial statements in conformity with generally accepted accounting principles in the United States (“U.S. GAAP”) requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Although these estimates are based on management’s best knowledge of current events and actions Coherent may undertake in the future, actual results may ultimately differ from the estimates.
Foreign Currency Translation	Foreign Currency Translation. For all foreign subsidiaries whose functional currency is not the U.S. dollar, the functional currency is the local currency. Assets and liabilities of those operations are translated into U.S. dollars using period-end exchange rates while income and expenses are translated using the average exchange rates for the reporting period. Translation adjustments are recorded as Accumulated other comprehensive income (loss) within Shareholders’ equity in the accompanying Consolidated Balance Sheets.
Cash, Cash Equivalents, and Restricted Cash	Cash, Cash Equivalents, and Restricted Cash. We consider highly liquid investment instruments with an original maturity of three months or less to be cash equivalents.
Allowance for Expected Credit Losses	Allowance for Expected Credit Losses. We recognize expected credit losses resulting from the inability of our customers to make required payments through an allowance account that is measured each reporting date. We estimate credit losses over the life of our trade accounts receivable using a combination of historical loss data, current credit conditions, specific customer circumstances, and reasonable and supportable forecasts of future economic conditions.
Inventories	Inventories. Inventories are valued at the lower of cost or net realizable value, with cost determined on the first-in, first-out basis. Inventory costs include material, labor and manufacturing overhead. In evaluating the net realizable value of inventory, management also considers other factors, including known trends and market conditions. We generally record a reduction to the carrying value of inventory as a charge against earnings for all products on hand more than 12 to 24 months, depending on the nature of the products, that have not been sold to customers or cannot be further manufactured for sale to alternative customers. An additional charge may be recorded for product on hand that is in excess of product sold to customers over the same periods noted above.
Property, Plant and Equipment	Property, Plant and Equipment. Property, plant and equipment are carried at cost or fair value upon acquisition. Major improvements are capitalized, while maintenance and repairs are generally expensed as incurred. We review our property, plant and equipment and other long-lived assets for impairment whenever events or circumstances indicate that the carrying amounts may not be recoverable. Depreciation on property, plant and equipment and amortization on finance lease right-of-use assets for financial reporting purposes is computed primarily by the straight-line method over the estimated useful lives for building, building improvements and land improvements of 10 to 30 years and 3 to 20 years for machinery and equipment.
Investment Credit	Investment Credit. The CHIPS Act provides an Advanced Manufacturing Investment Credit (“AMIC”) under Section 48D for qualified investments in advanced manufacturing facilities. The Company expects to receive refundable federal tax credits related to certain expansion projects. Credits attributable to property, plant and equipment are recorded as reductions to the depreciable basis of the related assets, while credits attributable to capitalized SG&A costs are recorded as reductions to SG&A expense. The Company recorded reductions to property, plant, and equipment of $41 million and $39 million during fiscal 2025 and fiscal 2026, respectively, and recorded a reduction to SG&A expense of $21 million during fiscal 2026. Related receivables are based on management's interpretation of Section 48D and are refundable to the extent they exceed federal income tax liabilities. They are recorded within prepaid and refundable income taxes in the Consolidated Balance Sheet.
Leases	Leases. Leases are recognized under Accounting Standards Codification 842, Leases. The Company determines whether a contract contains a lease at contract inception. A contract contains a lease if there is an identified asset and the Company has the right to control the asset. Operating lease right-of-use (“ROU”) assets represent our right to use an underlying asset for the lease term, and lease liabilities represent our obligation to make lease payments arising from the lease. Operating lease ROU assets and lease liabilities are recognized at commencement date based on the present value of lease payments over the lease term. We use the incremental borrowing rate in determining the present value of lease payments, unless the implicit rate is readily determinable. If lease terms include options to extend or terminate the lease, the ROU asset and lease liability are measured based on the reasonably certain decision. We have lease agreements with lease and non-lease components, which are accounted for as a single lease component for all classes of leased assets for which the Company is the lessee. Additionally, for certain equipment leases, the portfolio approach is applied to account for the operating lease ROU assets and lease liabilities. In the Consolidated Statements of Earnings (Loss), lease expense for operating lease payments is recognized on a straight-line basis over the lease term. For finance leases, interest expense is recognized on the lease liability and the ROU asset is amortized over the lease term. Some leasing arrangements require variable payments that are dependent upon usage or output, or may vary for other reasons, such as insurance or tax payments. Variable lease payments are recognized as incurred, and are not presented as part of the ROU asset or lease liability. See Note 9. Leases for further information.
Business Combinations	Business Combinations. The Company accounts for business combinations by establishing the acquisition-date fair value as the measurement for all assets acquired and liabilities assumed. Certain provisions of U.S. GAAP prescribe, among other things, the determination of acquisition-date fair value of consideration paid in a business combination (including contingent consideration) and the exclusion of transaction and acquisition-related restructuring costs from acquisition accounting.
Goodwill	Goodwill. The excess purchase price over the fair value allocated to identifiable tangible and intangible net assets of businesses acquired is reported as goodwill in the accompanying Consolidated Balance Sheets. We test goodwill for impairment at least annually as of April 1, or whenever events or changes in circumstances indicate that goodwill might be impaired. The assessment requires significant judgment regarding future operating performance, including projections of revenues, profitability and cash flows, as well as assumptions regarding market conditions and discount rates. Goodwill impairment is measured as the amount by which a reporting unit’s carrying value exceeds its fair value, not to exceed the carrying amount of goodwill. As of April 1 of fiscal years 2026 and 2025, we completed our annual impairment tests of our reporting units using the quantitative assessment. For fiscal year 2026, the fair values of the reporting units were determined using a discounted cash flow analysis with projected financial information based on our most recently completed long-term strategic planning processes and also considered the current financial performance compared to our prior projections of the reporting units, as well as a market analysis. As of April 1, 2026, the fair value of each of our reporting units, except for Lasers, exceeded their carrying values with significant headroom. As of April 1, 2025, the fair value of each of our reporting units exceeded their carrying values with significant headroom. For the Lasers reporting unit, as of April 1, 2026, based on the quantitative assessment, the estimated fair value exceeded the carrying value by approximately 8%. Accordingly, we concluded that goodwill was not impaired; however, the reporting unit remains sensitive to changes in assumptions and future operating performance. Our Lasers reporting unit has goodwill of approximately $3.1 billion at June 30, 2026. In evaluating the Lasers reporting unit, significant weight was provided to the forecasted revenue and related gross margins as we determined that these have the most significant impact on its fair value. The forecasted profitability is expected to increase as volumes increase and the achievement of operating efficiencies and the benefit from the multi-year synergy and site consolidation plans are realized. The valuation utilized a discount rate of 11.0%, representing the rate of return a market participant would require for an investment in the reporting unit. If actual results differ materially from management’s estimates and assumptions, a material goodwill impairment charge could occur in future periods. Due to the cyclical nature of our business, and the other factors described in the section on Risk Factors set forth in Item 1A of this Annual Report on Form 10-K, the profitability of our individual reporting units may periodically be affected by downturns in customer demand, operational challenges and other factors. If material adverse conditions occur that impact one or more of our reporting units, our determination of future fair value might not support the carrying amount of one or more of our reporting units, and the related goodwill would need to be impaired.
Intangibles	Intangibles. Intangible assets are initially recorded at their cost or fair value upon acquisition. Finite-lived intangible assets are amortized using the straight-line method over the estimated useful lives of the assets ranging from 1 to 20 years. Indefinite-lived intangible assets are not amortized but tested annually for impairment at April 1, or when events or changes in circumstances indicate that indefinite-lived intangible assets might be impaired. As of April 1 of fiscal 2026, the Company completed a quantitative impairment test of the Coherent trade name acquired in the acquisition of Coherent, Inc. (“Merger”) using the relief from royalty method and determined that its fair value is well in excess of its carrying value.
Series B Convertible Preferred Stock	Series B Convertible Preferred Stock. The Series B-1 and B-2 Convertible Preferred Stock was initially measured at fair value less issuance costs, accreted to its redemption value over a ten-year period (using the effective interest method) with such accretion accounted for as deemed dividends and reductions to Net Earnings (Loss) Available to the Common Shareholders. All outstanding shares of Series B-1 and Series B-2 Preferred Stock were converted to Company Common Stock in the second quarter of fiscal 2026, and no shares of Preferred Stock are currently issued and outstanding. See Note 14. Equity and Redeemable Preferred Stock for further information.
Noncontrolling Interests	Noncontrolling Interests. The Company accounts for noncontrolling interests in accordance with ASC Topic 810-10-45, which requires the Company to present noncontrolling interests as a separate component of total shareholders’ equity on the Consolidated Balance Sheets and the consolidated net earnings (loss) attributable to its noncontrolling interests be clearly identified and presented on the face of the Consolidated Statements of Earnings (Loss) and Consolidated Statements of Comprehensive Income (Loss).
Commitments and Contingencies	Commitments and Contingencies. Liabilities for loss contingencies arising from claims, assessments, litigation, fines, penalties and other sources are recorded when it is probable that a liability has been incurred and the amount of the assessment and/or remediation can be reasonably estimated. If a loss is not both probable and reasonably estimable, or if an exposure to a loss exists in excess of the amount accrued, the Company assesses whether there is at least a reasonable possibility that a loss, or additional loss, may have been incurred. If there is a reasonable possibility that a loss, or additional loss, may have been incurred, the Company discloses the estimate of the possible loss or range of loss if it is material and an estimate can be made, or discloses that such an estimate cannot be made. The determination as to whether a loss can reasonably be considered to be possible or probable is based on management's assessment, together with legal counsel, regarding the ultimate outcome of the matter. Legal costs incurred in connection with loss contingencies are expensed as incurred. Such liabilities are adjusted as further information develops or circumstances change. Our customers may discover defects in our products after the products have been fully deployed and operated under peak stress conditions. If we are unable to correct defects or other problems, we could experience, among other things, loss of customers, increased costs of product returns and warranty expenses, damage to our brand reputation, failure to attract new customers or achieve market acceptance, diversion of development and engineering resources, or legal action by our customers. We had no material loss contingency liabilities at June 30, 2026 or 2025 related to commitments and contingencies.
Supply Chain Financing Arrangements	Supply Chain Financing Arrangements. The Company has entered into supply chain financing arrangements with third-party financial institutions to provide its vendors with enhanced payment options while providing the Company with added working capital flexibility. The Company does not provide any guarantees under these arrangements, does not have an economic interest in its suppliers’ voluntary participation, does not receive an economic benefit from the financial institutions, and no assets are pledged under the arrangements. The arrangements do not change the payable terms negotiated by the Company and our vendors and does not result in a change in the classification of amounts due as accounts payable in the Consolidated Balance Sheets.
Income Taxes	Income Taxes. Deferred income tax assets and liabilities are determined based on the differences between the Consolidated Financial Statements and tax basis of assets and liabilities using enacted tax rates in effect in the years in which the differences are expected to reverse. Valuation allowances are established when necessary to reduce deferred income tax assets to the amount more likely than not to be realized. The Company’s accounting policy is to apply acquired deferred tax liabilities to pre-existing deferred tax assets before evaluating the need for a valuation allowance for acquired deferred tax assets. The Company recognizes the tax benefit from an uncertain tax position only if it is more likely than not that the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position. The tax benefits recognized in the financial statements from such a position are measured based on the largest benefit that has a greater than 50% likelihood of being realized upon ultimate resolution. The amount of unrecognized tax benefits is adjusted for changes in facts and circumstances. For example, adjustments could result from significant amendments to existing tax law and the issuance of regulations or interpretations by the taxing authorities, new information obtained during a tax examination, or resolution of an examination. The Company believes that its estimates for uncertain tax positions are appropriate and sufficient to pay assessments that may result from examinations of its tax returns. The Company recognizes both accrued interest and penalties related to unrecognized tax benefits in income tax expense. The Company uses a portfolio approach to release the income tax effects in AOCI related to interest rate instruments and pension and postretirement benefits. Under this approach, the income tax effects are released from AOCI based on the pre-tax adjustments to interest rate instruments and pension liabilities or assets recognized within other comprehensive income (loss). Any tax effects remaining in AOCI are released only when the entire portfolio of the interest rate instruments or pension and postretirement benefits is liquidated, sold or extinguished.
Revenue Recognition	Revenue Recognition. Revenue is recognized under Accounting Standards Codification 606, Revenue from Contracts with Customers (ASC 606), when or as obligations under the terms of a contract with our customer have been satisfied and control has transferred to the customer. We have elected the practical expedient to exclude all sales and use taxes from the measurement of the transaction price. In certain customer arrangements, we are contractually entitled to reimbursement for import tariffs incurred on product shipments, the increase in consideration received due to tariff surcharges would not meet the sales and use tax practical expedient. As such, revenue including the tariff surcharge, and related tariff expense, would be recorded gross in the income statement. These reimbursements are considered part of the transaction price under ASC 606 and are recognized as revenue on a gross basis. The corresponding tariff costs are recorded in cost of goods sold. For contracts with commercial customers, which comprise the majority of our performance obligations, ownership of the goods and associated revenue are generally transferred to customers at a point in time, generally upon shipment of a product to the customer or delivery of the product to the customer and without significant judgments. The majority of contracts typically require payment within 30 to 90 days after transfer of ownership to the customer. We periodically enter into contracts in which a customer may purchase a combination of goods and/or services, such as products with maintenance contracts or extended warranty. Maintenance contracts and extended warranties are typically sold separately from products, and represent a distinct performance obligation. Revenue related to the performance obligation for maintenance contracts and extended warranties is recognized over time as the customer simultaneously receives and consumes the benefits provided by us. Service revenue includes repairs, tolling arrangements and installation. Repairs, tolling and installation activities are usually completed in a short period of time (normally less than one month) and therefore recorded at a point in time when the services are completed. The majority of contracts typically require payment within 30 to 90 days after performance of the service. Non-recurring engineering arrangements are typically recognized as product revenue over time under either the time and material practical expedient, as the entity has a right to consideration from a customer, in an amount that corresponds directly with the value to the customer of the entity’s performance completed to date, or under the output and input method. The majority of contracts typically require payment within 30 to 90 days. Our revenue recognition policy is consistently applied across our segments, product lines, services, and geographical locations. For the periods covered herein, we measure revenue based on the amount of consideration the Company expects to be entitled to in exchange for products or services, reduced by the amount of variable consideration related to products expected to be returned. We determine variable consideration, which primarily consists of product returns and distributor sales price reductions resulting from price protection agreements, by estimating the impact of such reductions based on historical analysis of such activity. Under ASC 606, we expense sales commissions when incurred because the amortization period would have been one year or less. These costs are recorded within selling, general and administrative expenses (“SG&A”). We offer an assurance-type limited warranty that products will be free from defects in materials and workmanship. We establish an accrual for estimated warranty expenses at the time revenue is recognized. The warranty is typically one year, although it can be longer periods for certain products, and is typically limited to either (1) the replacement or repair of the product or (2) a credit against future purchases. We believe that disaggregating revenue by end market provides the most relevant information regarding the nature, amount, timing, and uncertainty of revenues and cash flows. See Note 3. Revenue from Contracts with Customers for further information
Research and Development	Research and Development. R&D expenses include salaries, contractor and consultant fees, supplies and materials, as well as costs related to other overhead such as depreciation, facilities, utilities and other departmental expenses. The costs we incur with respect to internally developed technology, including allocations of our wafer fabrication and other manufacturing facilities and resources utilized to support R&D programs, are included in R&D expenses as incurred.
Restructuring	Restructuring. The Company records charges associated with approved restructuring plans to reorganize operations, to remove redundant headcount and infrastructure associated with site consolidations, facilities moves and closures, as well as the relocation and requalification of certain manufacturing facilities. Restructuring charges can include severance costs to eliminate a specific number of positions, infrastructure charges to vacate facilities and consolidate operations and contract cancellation costs. The Company records restructuring charges when they are probable and estimable. The Company evaluates restructuring charges in accordance with ASC 420, Exit or Disposal Cost Obligations, and ASC 712, Compensation-Nonretirement Post-Employment Benefits (ASC 712).
Assets Held-for-Sale	Assets Held-for-Sale. Assets and liabilities are classified as held-for-sale when management approves and commits to a formal plan to actively market the assets for sale at a price reasonable in relation to their estimated fair value, the assets are available for immediate sale in their present condition, an active program to locate a buyer and other actions required to complete the sale have been initiated, the sale of the assets is probable and expected to be completed within one year, and it is unlikely that significant changes will be made to the plan. These conditions are usually met from the date on which a letter of intent or agreement to sell is ready for signing. Assets held-for-sale are reported at the lower of carrying amount or fair value less costs to sell. Long-lived assets classified as held-for-sale are not subject to depreciation or amortization. The held-for-sale designation and carrying value of assets held-for-sale are periodically reviewed and adjusted as facts and circumstances indicate that a change may be necessary.
Share-Based Compensation	Share-Based Compensation. Share-based compensation arrangements require the recognition in net earnings (loss) of the grant date fair value of share-based compensation (for equity-classified awards). We recognize the share-based compensation expense over the requisite service period of the individual grantees, which generally equals the vesting period, net of forfeitures. The estimated annualized forfeitures are based on our historical experience of pre-vesting cancellations. We will record additional expense in future periods if the actual forfeiture rate is lower than estimated, and will adjust expense in future periods if the actual forfeitures are higher than estimated.
Earnings per Share	Earnings per Share. Basic earnings (loss) per share is computed by dividing net earnings (loss) available to the common shareholders by the weighted-average number of shares of common stock outstanding during the period. Diluted earnings (loss) per share is computed by dividing the diluted earnings (loss) available to the common shareholders by the weighted-average number of shares of common stock and potentially dilutive shares of common stock outstanding during the period. If there is a net loss for the period, diluted earnings per share is the same as basic earnings per share. See Note 19. Earnings Per Share for further information.
Accumulated Other Comprehensive Income (Loss) (“AOCI”)	Accumulated Other Comprehensive Income (Loss) (“AOCI”). AOCI is a measure of all changes in shareholders’ equity that result from transactions and other economic events in the period other than transactions with owners. AOCI is a component of shareholders’ equity and consists of accumulated foreign currency translation adjustments, changes in the fair value of interest rate derivative instruments, and pension adjustments.
Fair Value Measurements	Fair Value Measurements. We apply fair value accounting for all financial assets and liabilities that are required to be recognized or disclosed at fair value in the Consolidated Financial Statements. Fair value is defined as the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. When determining the fair value measurements for assets and liabilities, we consider the principal or most advantageous market in which we would transact, and the market-based risk measurements or assumptions that market participants would use in pricing the asset or liability, such as inherent risk, transfer restrictions and credit risk.
Recently Issued Financial Accounting Standards	In December 2023, the FASB issued Accounting Standards Update (“ASU”) 2023-09, “Income Taxes (Topic 740): Improvements to Income Tax Disclosures” (“ASU 2023-09”). ASU 2023-09 includes amendments that further enhance income tax disclosures, primarily through standardization and disaggregation of rate reconciliation categories and income taxes paid by jurisdiction. ASU 2023-09 was effective for annual periods beginning after December 15, 2024, on either a prospective or retrospective basis. Early adoption was permitted. The Company adopted the standard in fiscal 2026. See Note 18. Income Taxes for further information. In November 2024, the FASB issued ASU 2024-03, “Income Statement-Reporting Comprehensive Income-Expense Disaggregation Disclosures (Subtopic 220-40), Disaggregation of Income Statement Expenses.” This ASU requires disclosure about specific types of expenses included in expense captions including purchases of inventory, employee compensation, depreciation, amortization, and depletion. This ASU is effective for our annual disclosures starting in fiscal year 2028 and interim periods starting in fiscal year 2029. Early adoption is permitted. A public entity should apply the amendments in this ASU on a prospective basis with the option to apply the standard retrospectively. The Company is currently evaluating this ASU to determine its impact on the Company’s disclosures.

Segment and Geographic Reporting - Schedule of Segment Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
Segment Reporting [Line Items]
Revenues	$ 7,118,181	$ 5,810,115	$ 4,707,688
North America
Segment Reporting [Line Items]
Revenues	4,633,696	3,564,846	2,622,569
Europe
Segment Reporting [Line Items]
Revenues	814,176	698,800	714,282
China
Segment Reporting [Line Items]
Revenues	813,377	680,110	621,918
Japan
Segment Reporting [Line Items]
Revenues	390,373	390,610	340,863
Rest of World
Segment Reporting [Line Items]
Revenues	$ 466,559	$ 475,749	$ 408,056

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

+ Details

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

+ Details

Cybersecurity Risk Management and Strategy Disclosure	12 Months Ended
Cybersecurity Risk Management and Strategy Disclosure	Jun. 30, 2026
Cybersecurity Risk Management, Strategy, and Governance [Line Items]
Cybersecurity Risk Management Processes for Assessing, Identifying, and Managing Threats [Text Block]	We have established policies and processes for assessing, identifying, and managing material risk from cybersecurity threats and have integrated these processes into our overall risk management systems and processes. We have aligned our cybersecurity program with recognized security frameworks such as NIST-CSF (National Institute of Standard and Technologies – Cybersecurity Framework). We routinely assess material risks from cybersecurity threats, including any potential unauthorized occurrence on or conducted through our information systems that may result in adverse effects on the confidentiality, integrity, or availability of our information systems or any information residing therein. We maintain a risk based approach to identify cybersecurity threats, and conduct assessments to determine if our information systems are vulnerable to such cybersecurity threats. This includes identification of reasonably foreseeable internal and external risks, the likelihood and potential damage that could result from such risks, and the sufficiency of existing policies, procedures, systems, and safeguards in place to manage such risks. We maintain reasonable safeguards to minimize identified risks; reasonably address any identified gaps in existing safeguards; and regularly monitor the effectiveness of our safeguards. We devote significant resources and designate high-level personnel, including our Chief Information Officer and Global Head of Cybersecurity, to manage the risk mitigation process. We have implemented technical solutions that are designed to protect our information systems from cybersecurity threats, including firewalls, intrusion prevention and detection systems, anti-malware functionality, and access controls. We regularly evaluate, monitor, and improve these solutions. As part of our overall risk management system, we monitor and test our safeguards and train our employees on these safeguards, in collaboration with human resources, information technology, legal, compliance and ethics and management. Personnel at all levels and departments are made aware of our cybersecurity policies through periodic trainings. We periodically engage consultants, auditors, or other third parties. These service providers assist us to design, implement or assess our cybersecurity policies and procedures, as well as to monitor and test our safeguards. We work with our third-party suppliers and service providers to address the use of appropriate security measures in connection with their work with us.
Cybersecurity Risk Management Processes Integrated [Flag]	true
Cybersecurity Risk Management Processes Integrated [Text Block]	We have established policies and processes for assessing, identifying, and managing material risk from cybersecurity threats and have integrated these processes into our overall risk management systems and processes. We have aligned our cybersecurity program with recognized security frameworks such as NIST-CSF (National Institute of Standard and Technologies – Cybersecurity Framework). We routinely assess material risks from cybersecurity threats, including any potential unauthorized occurrence on or conducted through our information systems that may result in adverse effects on the confidentiality, integrity, or availability of our information systems or any information residing therein.
Cybersecurity Risk Management Third Party Engaged [Flag]	true
Cybersecurity Risk Third Party Oversight and Identification Processes [Flag]	true
Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Flag]	false
Cybersecurity Risk Board of Directors Oversight [Text Block]	One of the key functions of our Board of Directors is informed oversight of our risk management process, including risks from cyber security threats. Our Board of Directors is responsible for monitoring and assessing strategic risk exposure, and our executive officers are responsible for the day-to-day management of the material risks we face. Our Board of Directors administers its cybersecurity risk oversight function through the Nominating and Corporate Governance (“NCG”) Committee.
Cybersecurity Risk Board Committee or Subcommittee Responsible for Oversight [Text Block]	Our Board of Directors administers its cybersecurity risk oversight function through the Nominating and Corporate Governance (“NCG”) Committee.
Cybersecurity Risk Process for Informing Board Committee or Subcommittee Responsible for Oversight [Text Block]	The NCG Committee is briefed quarterly by management on, among other things, our company’s cybersecurity risks and activities, including any recent cybersecurity incidents and related responses, cybersecurity systems testing, activities of third parties, and the like. The NCG Committee provides regular updates to the Board of Directors on such reports.
Cybersecurity Risk Role of Management [Text Block]	Our Chief Information Officer and Global Head of Cybersecurity have combined relevant experience of more than 45 years, including over 20 years in cybersecurity, and they oversee our cyber security policies and processes, including those described in “Risk Management and Strategy” above. Our Global Head of Cybersecurity monitors and keeps informed about prevention, detection, mitigation, and remediation efforts through regular communication and reporting from our cybersecurity team, and through the use of technological tools and software and results from third party assessments.
Cybersecurity Risk Management Positions or Committees Responsible [Flag]	true
Cybersecurity Risk Management Positions or Committees Responsible [Text Block]	Our Chief Information Officer and Global Head of Cybersecurity have combined relevant experience of more than 45 years, including over 20 years in cybersecurity, and they oversee our cyber security policies and processes, including those described in “Risk Management and Strategy” above.
Cybersecurity Risk Management Expertise of Management Responsible [Text Block]	Our Chief Information Officer and Global Head of Cybersecurity have combined relevant experience of more than 45 years, including over 20 years in cybersecurity
Cybersecurity Risk Process for Informing Management or Committees Responsible [Text Block]	Our Global Head of Cybersecurity monitors and keeps informed about prevention, detection, mitigation, and remediation efforts through regular communication and reporting from our cybersecurity team, and through the use of technological tools and software and results from third party assessments.
Cybersecurity Risk Management Positions or Committees Responsible Report to Board [Flag]	true

Restructuring Plans - Schedule of Components and Restructuring Charges and Payments (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
Restructuring Reserve [Roll Forward]
Restructuring charges (recoveries)	$ 63,390	$ 160,081	$ 27,054
2023 Plan
Restructuring Reserve [Roll Forward]
Beginning Balance	44,230	51,061
Restructuring charges (recoveries)	893	52,997
Payments	(5,336)	(12,954)
Asset write-offs and other	(11,207)	(46,874)
Ending Balance	28,580	44,230	51,061
2023 Plan \| Severance
Restructuring Reserve [Roll Forward]
Beginning Balance	44,230	51,061
Restructuring charges (recoveries)	(11,349)	6,123
Payments	(5,336)	(12,954)
Asset write-offs and other	1,035	0
Ending Balance	28,580	44,230	51,061
2023 Plan \| Asset Write-Offs
Restructuring Reserve [Roll Forward]
Beginning Balance	0	0
Restructuring charges (recoveries)	250	24,010
Payments	0	0
Asset write-offs and other	(250)	(24,010)
Ending Balance	0	0	0
2023 Plan \| Other
Restructuring Reserve [Roll Forward]
Beginning Balance	0	0
Restructuring charges (recoveries)	11,992	22,864
Payments	0	0
Asset write-offs and other	(11,992)	(22,864)
Ending Balance	0	0	0
2025 Plan
Restructuring Reserve [Roll Forward]
Beginning Balance	47,113	0
Restructuring charges (recoveries)	62,497	107,084
Payments	(20,652)	(59,971)
Asset write-offs and other	(44,422)	0
Ending Balance	44,536	47,113	0
2025 Plan \| Severance
Restructuring Reserve [Roll Forward]
Beginning Balance	16,722	0
Restructuring charges (recoveries)	27,583	23,983
Payments	(20,652)	(7,261)
Asset write-offs and other	(1,122)	0
Ending Balance	22,531	16,722	0
2025 Plan \| Asset Write-Offs
Restructuring Reserve [Roll Forward]
Beginning Balance	10,494	0
Restructuring charges (recoveries)	26,068	59,068
Payments	0	(48,574)
Asset write-offs and other	(26,788)	0
Ending Balance	9,774	10,494	0
2025 Plan \| Other
Restructuring Reserve [Roll Forward]
Beginning Balance	19,897	0
Restructuring charges (recoveries)	8,846	24,033
Payments	0	(4,136)
Asset write-offs and other	(16,512)	0
Ending Balance	$ 12,231	$ 19,897	$ 0

Consolidated Statements of Shareholders' Equity and Mezzanine Equity (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2026	Jun. 30, 2024
Statement of Stockholders' Equity [Abstract]
Change in fair value of interest rate instruments, taxes	$ (3,126)	$ (5,468)
Pension adjustment, taxes	0	(1,718)
Taxes on sale of shares to noncontrolling interests		127,389
Issuance costs on sale of shares to noncontrolling interests		31,840
Change in fair value of interest rate instruments, net of taxes	(11,414)	$ (20,196)
Issuance costs for sale of shares	$ 1,575

Subsequent Events	12 Months Ended
Subsequent Events	Jun. 30, 2026
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On August 12, 2026, a wholly-owned foreign subsidiary of the Company entered into an unsecured credit facility with local lenders providing for aggregate commitments of approximately $945 million (based on exchange rates in effect at signing). The facility consists of a local currency tranche with a sublimit equivalent to 470 million U.S. Dollars and a U.S. Dollar tranche with sublimit of $475 million (the “August 2026 Facility”). The August 2026 Facility matures 36 months from the date of first utilization and was undrawn as of August 14, 2026. Borrowings may be used to fund working capital and other permitted operating requirements of the borrower, including the repayment of existing intercompany working capital loans. Borrowings bear interest at variable rates based on the applicable benchmark rate for the borrowed currency, including three-month Term SOFR plus 20 basis points for U.S. Dollar denominated loans and the one-year local currency lending benchmark less 71 basis points for local currency denominated loans, in each case subject to customary adjustments. Interest is payable quarterly. Neither the Company, nor any other of its subsidiaries, is a party to or guarantor of the August 2026 Facility. The August 2026 Facility contains various affirmative and negative covenants, financial ratio requirements, and events of default, each subject to applicable thresholds, grace periods and cure provisions.

Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Jun. 30, 2026

Intangible Asset, Goodwill and Other [Abstract]

Schedule of Carrying Amount of Goodwill

Changes in the carrying amount of goodwill were as follows ($000):



	Year Ended June 30, 2026
	Datacenter & Communications		Industrial		Total
Balance-beginning of period	$	1,150,570	$	3,320,514	$	4,471,084
Other reclassifications(1)	—		24,493		24,493
Foreign currency translation	(170)		(119,810)		(119,980)
Balance-end of period	$	1,150,400	$	3,225,197	$	4,375,597

1) Other reclassifications include adjustments to goodwill classified as held-for-sale. See Note 7. Assets Held-for-Sale and Sale of Businesses for further information.



	Year Ended June 30, 2025
	Datacenter & Communications		Industrial		Total
Balance at beginning of period	$	1,147,297	$	3,317,032	$	4,464,329
Other reclassifications(1)	—		(174,373)		(174,373)
Foreign currency translation and other	3,273		177,855		181,128
Balance-end of period	$	1,150,570	$	3,320,514	$	4,471,084

(1) Other reclassifications include adjustments to goodwill classified as held-for-sale. See Note 7. Assets Held-for-Sale and Sale of Businesses for further information.

Schedule of Gross Carrying Amount and Accumulated Amortization of Intangible Assets Other Than Goodwill

The gross carrying amount and accumulated amortization of our intangible assets other than goodwill were as follows ($000):



	June 30, 2026						June 30, 2025
	Gross Carrying Amount		Accumulated Amortization		Net Book Value		Gross Carrying Amount		Accumulated Amortization		Net Book Value
Technology	$	1,505,754	$	(601,358)	$	904,396	$	1,534,066	$	(513,181)	$	1,020,885
Trade Names	438,471		(8,471)		430,000		438,471		(8,471)		430,000
Customer Lists	2,384,730		(834,652)		1,550,078		2,440,834		(686,972)		1,753,862
Backlog and Other	82,887		(82,887)		—		90,121		(90,121)		—
Total	$	4,411,842	$	(1,527,368)	$	2,884,474	$	4,503,492	$	(1,298,745)	$	3,204,747

Schedule of Estimated Amortization Expense for Existing Intangible Assets

The estimated amortization expense for existing intangible assets for each of the five succeeding years is as follows ($000):


Year Ending June 30,
2027	$	277,273
2028	242,596
2029	274,005
2030	251,941
2031	240,404

- Definition

Tabular disclosure of goodwill.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-2

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 24
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482548/350-20-55-24

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (h)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1

Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1

Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1

Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1

Reference 8: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1

Reference 9: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1

Reference 10: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1

Reference 11: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (g)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1

Reference 12: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1A

+ Details

Employee Benefit Plans (Tables)

12 Months Ended

Jun. 30, 2026

Retirement Benefits [Abstract]

Schedule of Estimated Future Benefit Payments

Estimated future benefit payments under all plans are estimated to be as follows ($000):


Year Ended June 30,
2027	$	11,400
2028	10,500
2029	11,300
2030	12,900
2031	13,700
Next five years	66,600

Earnings Per Share

12 Months Ended

Jun. 30, 2026

Earnings Per Share [Abstract]

Earnings Per Share

Basic earnings (loss) per common share is computed by dividing net earnings available to the common shareholders by the weighted-average number of shares of common stock outstanding during the period.

Diluted earnings (loss) per common share is computed by dividing the diluted earnings (loss) available to the common shareholders by the weighted-average number of shares of common stock and potentially dilutive shares of common stock outstanding during the period. Potentially dilutive shares whose effect would have been anti-dilutive are excluded from the computation of diluted earnings (loss) per common share.

The dilutive effect of equity awards is calculated based on the average stock price for each fiscal period, using the treasury stock method. For the year ended June 30, 2026, diluted shares outstanding include the dilutive effect of the potential shares of Coherent Common Stock issuable from performance and restricted shares and the potentially dilutive effect of the shares of Coherent Common Stock issuable upon conversion of the Series B Convertible Preferred Stock, calculated using the If-Converted method through their respective conversion dates, as the effect was dilutive. For the years ended June 30, 2025 and June 30, 2024, as the Company was in a net loss position, there were no dilutive shares.

The following is a reconciliation of the numerators and denominators of the basic and diluted earnings (loss) per share computations for the periods presented ($000, except per share):



Year Ended June 30,	2026		2025		2024


Numerator
Net earnings (loss) attributable to Coherent Corp.	$	804,998	$	49,364	$	(156,154)


Deduct Series B dividends and deemed dividends	(35,102)		(129,926)		(123,357)
Basic earnings (loss) available to common shareholders	$	769,896	$	(80,562)	$	(279,511)

Effect of dilutive securities:


Add back Series B preferred stock dividends	$	31,751	$	—	$	—
Add back Series B deemed dividends	3,351		—		—
Diluted earnings (loss) available to common shareholders	$	804,998	$	(80,562)	$	(279,511)

Denominator
Weighted average shares	177,269		154,755		151,642
Effect of dilutive securities:
Common stock equivalents	5,699		—		—


Series B Convertible Preferred Stock	12,419		—		—
Diluted weighted average common shares	195,387		154,755		151,642

Basic earnings (loss) per common share	$	4.34	$	(0.52)	$	(1.84)

Diluted earnings (loss) per common share	$	4.12	$	(0.52)	$	(1.84)

The following table presents potential shares of common stock excluded from the calculation of diluted net earnings (loss) per share, as their effect would have been anti-dilutive (000):



Year Ended June 30,	2026	2025	2024




Series B Convertible Preferred Stock	—	29,103	27,691
Common stock equivalents	—	4,548	2,940
Total anti-dilutive shares	—	33,651	30,631

Share-Based Compensation - Schedule of Outstanding and Exercisable Stock Options (Details) - Stock Options and Cash-Based Stock Appreciation Rights	12 Months Ended
	Jun. 30, 2026 $ / shares shares
Stock Options and Cash-Based Stock Appreciation Rights Outstanding
Number of Shares or Rights (in shares) \| shares	392,974
Weighted Average Remaining Contractual Term	2 years 7 months 6 days
Weighted Average Exercise Price (in usd per share)	$ 38.97
Stock Options and Cash-Based Stock Appreciation Rights Exercisable
Number of Shares or Rights (in shares) \| shares	392,974
Weighted Average Remaining Contractual Term	2 years 7 months 6 days
Weighted Average Exercise Price (in usd per share)	$ 38.97
$18.07 - $24.34
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of Exercise Prices, lower range (in usd per share)	18.07
Range of Exercise Prices, upper range (in usd per share)	$ 24.34
Stock Options and Cash-Based Stock Appreciation Rights Outstanding
Number of Shares or Rights (in shares) \| shares	15,035
Weighted Average Remaining Contractual Term	1 month 20 days
Weighted Average Exercise Price (in usd per share)	$ 21.67
Stock Options and Cash-Based Stock Appreciation Rights Exercisable
Number of Shares or Rights (in shares) \| shares	15,035
Weighted Average Remaining Contractual Term	1 month 20 days
Weighted Average Exercise Price (in usd per share)	$ 21.67
$24.35 - $35.38
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of Exercise Prices, lower range (in usd per share)	24.35
Range of Exercise Prices, upper range (in usd per share)	$ 35.38
Stock Options and Cash-Based Stock Appreciation Rights Outstanding
Number of Shares or Rights (in shares) \| shares	64,381
Weighted Average Remaining Contractual Term	1 year 7 months 28 days
Weighted Average Exercise Price (in usd per share)	$ 34.22
Stock Options and Cash-Based Stock Appreciation Rights Exercisable
Number of Shares or Rights (in shares) \| shares	64,381
Weighted Average Remaining Contractual Term	1 year 7 months 28 days
Weighted Average Exercise Price (in usd per share)	$ 34.22
$35.39 - $36.89
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of Exercise Prices, lower range (in usd per share)	35.39
Range of Exercise Prices, upper range (in usd per share)	$ 36.89
Stock Options and Cash-Based Stock Appreciation Rights Outstanding
Number of Shares or Rights (in shares) \| shares	203,679
Weighted Average Remaining Contractual Term	3 years 4 months 9 days
Weighted Average Exercise Price (in usd per share)	$ 36.33
Stock Options and Cash-Based Stock Appreciation Rights Exercisable
Number of Shares or Rights (in shares) \| shares	203,679
Weighted Average Remaining Contractual Term	3 years 4 months 9 days
Weighted Average Exercise Price (in usd per share)	$ 36.33
$36.90 - $49.90
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of Exercise Prices, lower range (in usd per share)	36.90
Range of Exercise Prices, upper range (in usd per share)	$ 49.90
Stock Options and Cash-Based Stock Appreciation Rights Outstanding
Number of Shares or Rights (in shares) \| shares	109,879
Weighted Average Remaining Contractual Term	2 years 29 days
Weighted Average Exercise Price (in usd per share)	$ 49.03
Stock Options and Cash-Based Stock Appreciation Rights Exercisable
Number of Shares or Rights (in shares) \| shares	109,879
Weighted Average Remaining Contractual Term	2 years 29 days
Weighted Average Exercise Price (in usd per share)	$ 49.03

Goodwill and Other Intangible Assets - Schedule of Gross Carrying Amount and Accumulated Amortization of Intangible Assets Other Than Goodwill (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Jun. 30, 2025
Intangible Asset, Finite-Lived [Line Items]
Gross Carrying Amount	$ 4,411,842	$ 4,503,492
Accumulated Amortization	(1,527,368)	(1,298,745)
Net Book Value	2,884,474	3,204,747
Technology
Intangible Asset, Finite-Lived [Line Items]
Gross Carrying Amount	1,505,754	1,534,066
Accumulated Amortization	(601,358)	(513,181)
Net Book Value	904,396	1,020,885
Trade Names
Intangible Asset, Finite-Lived [Line Items]
Gross Carrying Amount	438,471	438,471
Accumulated Amortization	(8,471)	(8,471)
Net Book Value	430,000	430,000
Customer Lists
Intangible Asset, Finite-Lived [Line Items]
Gross Carrying Amount	2,384,730	2,440,834
Accumulated Amortization	(834,652)	(686,972)
Net Book Value	1,550,078	1,753,862
Backlog and Other
Intangible Asset, Finite-Lived [Line Items]
Gross Carrying Amount	82,887	90,121
Accumulated Amortization	(82,887)	(90,121)
Net Book Value	$ 0	$ 0

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482558/350-40-50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 985
-SubTopic 20
-Name Accounting Standards Codification
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+ Details

Debt - Schedule of Components of Debt (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Dec. 10, 2021
Line of Credit Facility [Line Items]
Debt, gross	$ 3,257,482
Total debt	3,222,224	$ 3,686,921
Current portion of long-term debt	(7,916)	(188,306)
Long-term debt, less current portion	$ 3,214,308	3,498,615
Line of credit \| Secured Debt
Line of Credit Facility [Line Items]
Interest rate on debt	1.55%
Debt, gross	$ 14,000
Line of credit \| Credit Agreement \| Term A Facility
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.25%
Debt, gross	$ 1,140,625	624,375
Line of credit \| Credit Agreement \| Debt issuance costs, Term A Facility and Revolving Credit Facility
Line of Credit Facility [Line Items]
Debt issuance costs	$ (10,087)	(8,141)
Line of credit \| Credit Agreement \| Term B Facility
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.75%
Debt, gross	$ 1,080,000	2,102,358
Debt issuance costs	(21,228)	(36,478)
Line of credit \| Other Credit Facility
Line of Credit Facility [Line Items]
Debt, gross	28,004	0
Line of credit \| Borrowings on local lines of credit \| Secured Debt
Line of Credit Facility [Line Items]
Debt, gross	4,791	2,091
Line of credit \| Facility construction loan in Germany \| Secured Debt
Line of Credit Facility [Line Items]
Debt, gross	$ 14,062	17,682
Senior Notes \| 5.00% Senior Notes
Line of Credit Facility [Line Items]
Interest rate on debt	5.00%		5.00%
Debt, gross	$ 990,000	990,000
Debt Issuance costs and discount, Senior Notes	$ (3,943)	$ (4,966)

Equity and Redeemable Preferred Stock

12 Months Ended

Jun. 30, 2026

Equity [Abstract]

Equity and Redeemable Preferred Stock

Common shares issued

On March 2, 2026, the Company entered into a Securities Purchase Agreement (the “Purchase Agreement”) with NVIDIA Corporation (“NVIDIA”), pursuant to which the Company issued and sold 7,788,161 shares of Common Stock at a price of $256.80 per share, for aggregate gross proceeds of $2 billion. The transaction was completed as a private placement in reliance on the exemption from registration provided by Section 4(a)(2) of the Securities Act of 1933, as amended. NVIDIA’s investment will support research and development initiatives, future capacity expansion, and operational capabilities, as Coherent expands its manufacturing footprint.

The shares issued to NVIDIA are subject to a contractual lock-up for a period of six months following the closing date, during which NVIDIA may not, without the Company’s prior written consent, directly or indirectly transfer or otherwise dispose of the shares or enter into transactions that transfer the economic risks or benefits of ownership.

The Purchase Agreement includes a price protection provision that is effective for a period of six months following execution of the Purchase Agreement. The Company evaluated the price protection provision under applicable U.S. GAAP, including ASC 815, Derivatives and Hedging, and ASC 480, Distinguishing Liabilities from Equity, and determined that the provision is indexed to the Company’s own stock and meets the criteria for equity classification. Accordingly, the price protection provision is not accounted for as a derivative liability and no separate fair value measurement is required subsequent to issuance. Any potential issuance of additional shares or cash settlement pursuant to the price protection provision, if triggered, will be accounted for as an adjustment to equity.

Preferred stock

As of June 30, 2026, the Company’s amended and restated articles of incorporation authorize the Board of Directors, without shareholder approvals, to issue up to 5 million shares of preferred stock. As of that date, 2.3 million shares of mandatory convertible preferred shares had been previously issued and subsequently converted into shares of the Company’s Common Stock. During the quarter ended December 31, 2025, 75,000 shares and 140,000 shares of previously issued Series B-1 (“Series B-1 Preferred Stock”) and B-2 convertible preferred stock (“Series B-2 Preferred Stock” and, together with the Series B-1 Preferred Stock, the “Series B Preferred Stock”), no par value per share, respectively, were converted into an aggregate of 30.1 million shares of Common Stock. The majority of the Series B-1 and B-2 convertible preferred stock was converted by the holder and the remainder was converted by the Company. No Series B Preferred Stock was outstanding at June 30, 2026. As a result of the conversion, $2.5 billion was reclassified from Mezzanine Equity to Common Stock during the year ended June 30, 2026.

Series B Convertible Preferred Stock - Prior to Conversion in the quarter ended December 31, 2025

In March 2021, the Company issued 75,000 shares of Series B-1 Preferred Stock for $10,000 per share, resulting in an aggregate purchase price of $750 million. On July 1, 2022, the Company issued 140,000 shares of Series B-2 Preferred Stock for $10,000 per share and an aggregate purchase price of $1.4 billion.

The shares of Series B Preferred Stock were convertible into shares of Coherent Common Stock as follows:

•at the election of the holder, each share of Series B Preferred Stock could have been converted into shares of Coherent Common Stock at a conversion price of $85 per share (as it may be adjusted from time to time, the “Conversion Price”); and

•at the election of the Company at the then-applicable Conversion Price if the volume-weighted average price of Coherent Common Stock exceeded 150% of the then-applicable Conversion Price for 20 trading days out of any 30 consecutive trading days.

The issued shares of Series B Preferred Stock had voting rights, voting as one class with the Coherent Common Stock, on an as-converted basis, subject to limited exceptions.

The Series B Preferred Stock was initially measured at fair value less issuance costs, accreted to its redemption value over a 10-year period (using the effective interest method) with such accretion accounted for as deemed dividends and reductions to Net Earnings (Loss) Available to Common Shareholders.

Preferred stock dividends are presented as a reduction to Retained earnings on the Consolidated Balance Sheets. The Company entered into an agreement with the holder of the Series B Preferred Stock to waive dividends effective November 20, 2025. Due to the conversion of the Series B Preferred Stock to Common Stock in the quarter ended December 31, 2025, no dividends were declared or paid for the quarters ended December 31, 2025, March 31, 2026 or June 30, 2026.

The following table presents dividends per share and dividends recognized:



	Year Ended June 30, 2026		Year Ended June 30, 2025


Dividends per share to preferred shareholders	$	163	$	604
Preferred stock dividends ($000)	31,751		123,688
Preferred stock deemed dividends ($000)	3,351		6,238

- Definition

The entire disclosure for equity.

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-URI https://asc.fasb.org/1943274/2147478448/946-505-50-6

Reference 30: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 40
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-Section 50
-Paragraph 6
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480237/815-40-50-6

Reference 31: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
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Reference 32: http://www.xbrl.org/2003/role/disclosureRef
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Reference 33: http://www.xbrl.org/2003/role/disclosureRef
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Reference 34: http://www.xbrl.org/2003/role/disclosureRef
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-URI https://asc.fasb.org/1943274/2147481112/505-10-50-16

+ Details

Income Taxes - Schedule of Components of Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
Current:
Federal	$ 3,366	$ 3,010	$ 10,119
State	4,903	1,733	181
Foreign	251,313	154,815	103,640
Total Current	259,582	159,558	113,940
Deferred:
Federal	(54,967)	(50,454)	(68,955)
State	(1,633)	(7,217)	(186)
Foreign	(142,133)	(37,763)	(33,682)
Total Deferred	(198,733)	(95,434)	(102,823)
Total Income Tax Expense	$ 60,849	$ 64,124	$ 11,117

Inventories (Tables)

12 Months Ended

Jun. 30, 2026

Inventory Disclosure [Abstract]

Schedule of Components of Inventories

The components of inventories were as follows ($000):



June 30,	2026		2025

Raw materials	$	660,487	$	394,682
Work in progress	1,556,956		824,360
Finished goods	363,600		218,594
Total inventories	$	2,581,043	$	1,437,636

Assets Held-for-Sale and Sale of Businesses - Additional Information (Details) $ in Thousands			3 Months Ended				12 Months Ended
	Jan. 30, 2026 USD ($)	Sep. 02, 2025 USD ($)	Jun. 30, 2026 USD ($)	Dec. 31, 2025 USD ($)	Sep. 30, 2025 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2026 USD ($) entity	Jun. 30, 2025 USD ($) entity	Jun. 30, 2024 USD ($)
Long-Lived Asset, Held-for-Sale [Line Items]
Impairment of assets held-for-sale							$ 64,404	$ 84,988	$ 0
Gain on sale of business							$ 124,133	$ 0	$ 0
Product Division Based in Munich, Germany
Long-Lived Asset, Held-for-Sale [Line Items]
Impairment of assets held-for-sale				$ 11,000	$ 13,000	$ 81,000
Gain on sale of business			$ 9,000
Disposal Group, Disposed of by Sale, Not Discontinued Operations \| Aerospace and Defense Business
Long-Lived Asset, Held-for-Sale [Line Items]
Consideration for sale of business		$ 400,000
Gain on sale of business		115,000
Transaction related costs		$ 9,000
Disposal Group, Disposed of by Sale, Not Discontinued Operations \| Product Division Based in Munich, Germany
Long-Lived Asset, Held-for-Sale [Line Items]
Impairment of assets held-for-sale	$ 105,000
Total loss on sale	$ 96,000
Discontinued Operation, Gain (Loss) on Disposal, Statement of Income or Comprehensive Income [Extensible Enumeration]	Impairment of assets held-for-sale
Industrial
Long-Lived Asset, Held-for-Sale [Line Items]
Impairment of assets held-for-sale						$ 85,000
Number of entities classified as held-for-sale \| entity							3	2
Industrial \| Operating Segments
Long-Lived Asset, Held-for-Sale [Line Items]
Impairment of assets held-for-sale							$ 64,000

Accumulated Other Comprehensive Income (Loss) (Tables)

12 Months Ended

Jun. 30, 2026

Equity [Abstract]

Schedule of AOCI, Net of Tax

The changes in AOCI by component, net of tax, for the years ended June 30, 2026, 2025, and 2024 were as follows ($000):



	Foreign Currency Translation Adjustment		Interest Rate Instruments		Defined Benefit Pension Plan		Total Accumulated Other Comprehensive Income
AOCI - June 30, 2023	$	53,355	$	56,112	$	259	$	109,726
Other comprehensive income (loss) before reclassifications	(82,318)		24,948		(6,708)		(64,077)
Amounts reclassified from AOCI	—		(45,144)		(735)		(45,880)
Net current-period other comprehensive income (loss)	(82,318)		(20,196)		(7,443)		(109,957)
Reclass related to noncontrolling interests	2,871		—		—		2,871
AOCI - June 30, 2024	(26,092)		35,916		(7,184)		2,640
Other comprehensive income (loss) before reclassifications	409,069		499		(6,064)		403,505
Amounts reclassified from AOCI	—		(32,397)		(287)		(32,685)
Net current-period other comprehensive income (loss)	409,069		(31,898)		(6,351)		370,820
AOCI - Reclass related to noncontrolling interests	(1,423)		—		—		(1,423)
AOCI - June 30, 2025	381,554		4,018		(13,535)		372,037
Other comprehensive income (loss) before reclassifications	(159,065)		6,048		1,865		(151,152)
Amounts reclassified from AOCI	—		(17,462)		—		(17,462)
Net current-period other comprehensive income (loss)	(159,065)		(11,414)		1,865		(168,614)
AOCI - Reclass related to noncontrolling interests	689		—		—		689
AOCI - June 30, 2026	$	223,178	$	(7,396)	$	(11,670)	$	204,112

Assets Held-for-Sale and Sale of Businesses

12 Months Ended

Jun. 30, 2026

Discontinued Operations and Disposal Groups [Abstract]

Assets Held-for-Sale and Sale of Businesses

In the fourth quarter of fiscal 2025, management entered into non-binding agreements to sell several entities. As a result of classifying these entities as held-for-sale, the Company recorded non-cash impairment charges of $85 million within the Industrial segment. These charges were recognized in Impairment of assets held-for-sale in our Consolidated Statements of Earnings (Loss) in the fourth quarter of fiscal 2025 to reduce the carrying values of the entities to their estimated fair value.

On September 2, 2025, the Company completed the sale of its aerospace and defense business, which was part of the Industrial segment, for approximately $400 million, subject to customary post-closing adjustments. In connection with the sale, the Company recorded a gain of $115 million and incurred approximately $9 million in transaction related costs which were recorded in Gain on sale of business and SG&A expenses, respectively, in the Consolidated Statements of Earnings (Loss) in fiscal 2026.

On January 30, 2026, the Company completed the sale of its product division based in Munich, Germany that makes tools for materials processing, which is part of the Industrial segment. The transaction resulted in a loss of $96 million. The loss was primarily attributable to impairment charges of $105 million recognized within Impairment of assets held-for-sale in the Consolidated Statements of Earnings (Loss), including $81 million in the fourth quarter of fiscal 2025, $13 million in the first quarter of fiscal 2026 and $11 million in the second quarter of fiscal 2026. These impairment charges were partially offset by a gain of $9 million recorded within Gain on sale of business in the Consolidated Statements of Earnings (Loss) in fiscal 2026.

In the year ended June 30, 2026, the Company recorded additional non-cash impairment charges of $64 million within the Industrial segment related to three entities. Two of these entities had already been classified as held-for-sale as of the prior fiscal year-end and remained classified as held-for-sale during the first and second quarters of fiscal 2026, while the third entity was classified as held-for-sale during the fourth quarter of fiscal 2026. The charges were recorded in Impairment of assets held-for-sale in the Consolidated Statements of Earnings (Loss) in fiscal 2026 to reduce the carrying value of entities classified as held-for-sale to their estimated fair value.

Current assets and current liabilities held for sale are recorded in Prepaid and other current assets and Other accrued liabilities, respectively, in our Consolidated Balance Sheets. Noncurrent assets and noncurrent liabilities held for sale are recorded in Other assets and Other liabilities, respectively, in our Consolidated Balance Sheets. Assets and liabilities held-for-sale are in the Industrial segment at both June 30, 2026 and June 30, 2025.

Current and noncurrent assets and liabilities classified as held-for-sale as of June 30, 2026 and June 30, 2025 are as follows ($000):



	June 30, 2026		June 30, 2025

Accounts receivable	$	628	$	43,353
Inventories	31,755		97,236
Prepaid and refundable income taxes	119		9,023
Prepaid and other current assets	3,127		3,067
Less: Impairment of assets held for sale	(7,015)		—
Total current assets held-for-sale	$	28,614	$	152,679

Property, plant & equipment, net	$	21,286	$	103,863
Goodwill	3,624		174,373
Intangible assets	—		141,647
Other assets	12,368		32
Less: Impairment of assets held-for-sale	(37,278)		(84,988)
Total noncurrent assets held-for-sale	$	—	$	334,927

Accounts payable	$	3,328	$	19,209
Accrued compensation and benefits	3,289		16,768
Operating lease current liabilities	387		2,441
Accrued income taxes payable	(510)		(226)
Other accrued liabilities	4,512		19,202
Total current liabilities held-for-sale	$	11,006	$	57,394

Deferred income taxes	$	—	$	14,785
Operating lease liabilities	1,076		5,980
Other liabilities	1,318		7,870
Total noncurrent liabilities held-for-sale	$	2,394	$	28,635

Leases (Tables)

12 Months Ended

Jun. 30, 2026

Leases [Abstract]

Schedule of Lease Costs

The following table presents lease costs, which include leases for arrangements with an initial term of more than 12 months, lease term, and discount rates ($000):



Year Ended June 30,	2026			2025			2024
Finance lease cost
Amortization of right-of-use assets	$	—		$	1,528		$	1,667
Interest on lease liabilities	845			947			1,040
Total finance lease cost	845			2,475			2,707
Operating lease cost	64,035			59,213			52,909
Sublease income	(1,373)			—			—
Total lease cost	$	63,507		$	61,688		$	55,616

Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from finance leases	$	845		$	947		$	1,040
Operating cash flows from operating leases	62,996			58,117			50,672
Financing cash flows from finance leases	1,926			1,749			1,584

Assets obtained in exchange for lease liabilities

Right-of-use assets obtained in exchange for new operating lease liabilities	$	135,996		$	51,357		$	64,385


Weighted-average remaining lease term (in years)
Finance leases	5.5			6.5			7.5
Operating leases	5.8			6.2			6.6

Weighted-average discount rate
Finance leases	5.6		%	5.6		%	5.6		%
Operating leases	6.1		%	6.9		%	6.8		%

Schedule of Future Minimum Operating Lease Payments

The following table presents future minimum lease payments, which includes leases for arrangements with an initial term of more than 12 months ($000):


Future Years	Operating Leases		Finance Leases		Total
Year 1	$	77,516	$	2,847	$	80,363
Year 2	69,533		2,925		72,458
Year 3	60,689		3,006		63,695
Year 4	51,357		3,088		54,445
Year 5	40,652		3,173		43,825
Thereafter	74,763		1,521		76,284
Total minimum lease payments	374,510		16,560		391,070
Less: amounts representing interest	58,300		2,327		60,627
Present value of total lease liabilities	$	316,210	$	14,233	$	330,443

Schedule of Future Minimum Finance Lease Payments

The following table presents future minimum lease payments, which includes leases for arrangements with an initial term of more than 12 months ($000):


Future Years	Operating Leases		Finance Leases		Total
Year 1	$	77,516	$	2,847	$	80,363
Year 2	69,533		2,925		72,458
Year 3	60,689		3,006		63,695
Year 4	51,357		3,088		54,445
Year 5	40,652		3,173		43,825
Thereafter	74,763		1,521		76,284
Total minimum lease payments	374,510		16,560		391,070
Less: amounts representing interest	58,300		2,327		60,627
Present value of total lease liabilities	$	316,210	$	14,233	$	330,443

Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Jun. 30, 2025
Property, Plant, and Equipment [Line Items]
Property, plant and equipment, gross	$ 4,782,390	$ 3,492,759
Less accumulated depreciation	(1,783,047)	(1,615,252)
Property, plant and equipment, net	2,999,343	1,877,507
Land and improvements
Property, Plant, and Equipment [Line Items]
Property, plant and equipment, gross	58,996	59,543
Buildings and improvements
Property, Plant, and Equipment [Line Items]
Property, plant and equipment, gross	1,030,787	881,578
Machinery and equipment
Property, Plant, and Equipment [Line Items]
Property, plant and equipment, gross	2,916,096	2,188,509
Construction in progress
Property, Plant, and Equipment [Line Items]
Property, plant and equipment, gross	$ 776,511	$ 363,129

- Definition

Amount of accumulated depreciation, depletion, and amortization of property, plant, and equipment. Includes, but is not limited to, land and land improvement; building; machinery and equipment; furniture and fixture; and work of art, historical treasure, or similar asset classified as collection.

+ References + Details

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 905
-SubTopic 360
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Reference 10: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

- Definition

Amount, after accumulated depreciation, depletion, and amortization, of property, plant, and equipment. Includes, but is not limited to, land and land improvement; building; machinery and equipment; furniture and fixture; and work of art, historical treasure, or similar asset classified as collection.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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+ Details

Segment and Geographic Reporting (Tables)

12 Months Ended

Jun. 30, 2026

Segment Reporting [Abstract]

Schedule of Financial Information by Segment



	Year Ended June 30,
	2026		2025		2024


Segment revenue
Datacenter & Communications	$	5,274,629	$	3,755,164	$	2,631,369
Industrial	1,843,552		2,054,951		2,076,319
Total segment revenue	7,118,181		5,810,115		4,707,688

Intersegment revenue
Datacenter & Communications	40,735		38,584		36,504
Industrial	99,643		77,108		55,098
Elimination of intersegment revenue	(140,378)		(115,692)		(91,602)
Total intersegment revenue	—		—		—

Segment cost of goods sold and operating expenses (1)
Datacenter & Communications	3,985,646		2,889,961		2,167,905
Industrial	1,520,422		1,724,569		1,833,711
Total segment cost of goods sold and operating expenses	5,506,068		4,614,530		4,001,616

Segment profit
Datacenter & Communications	1,329,719		903,787		499,968
Industrial	422,773		407,490		297,706
Total segment profit	1,752,492		1,311,277		797,674

Unallocated Corporate expenses
Corporate and centralized function costs (2)	(296,748)		(274,333)		(179,624)
Share-based compensation	(193,804)		(160,972)		(126,895)
Restructuring costs (3)	(63,390)		(160,081)		(27,054)
Impairment of assets held-for-sale	(64,404)		(84,988)		—
Integration, site consolidation and other costs (4)	(80,084)		(38,237)		(79,820)
Amortization of intangibles	(280,334)		(302,788)		(288,160)
Interest expense	(190,267)		(243,251)		(288,475)


Gain on sale of business	124,133		—		—
Other income, net	140,139		47,554		44,707

Earnings (loss) before income taxes	$	847,733	$	94,181	$	(147,647)

(2)We do not allocate corporate and centralized function costs that are not directly attributable to our operating segments.

(3)See Note 12. Restructuring Plans for further information.

Schedule of Depreciation And Amortization by Segment

The following tables summarizes depreciation and amortization by segment ($000):



	Year Ended June 30,
Depreciation and amortization	2026		2025		2024
Datacenter & Communications	$	212,560	$	209,293	$	213,693
Industrial	304,960		339,377		340,601
Corporate and shared services	4,375		4,928		5,467
Total depreciation and amortization	$	521,895	$	553,598	$	559,761

Schedule of Geographic Information

Geographic information for revenues, by location of the customer’s headquarters, were as follows ($000):



	Revenues
Year Ended June 30,	2026		2025		2024


North America	$	4,633,696	$	3,564,846	$	2,622,569
Europe	814,176		698,800		714,282
China	813,377		680,110		621,918
Japan	390,373		390,610		340,863
Rest of World	466,559		475,749		408,056
Total	$	7,118,181	$	5,810,115	$	4,707,688

Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Long-Lived Asset

Geographic information for long-lived assets by country, which include property, plant and equipment, net of related depreciation, and certain other long-term assets, were as follows ($000):



	Long-Lived Assets
June 30,	2026		2025
United States	$	1,394,823	$	1,092,389
Non-United States
China	968,796		402,960
Malaysia	473,786		196,543
Germany	189,819		189,281
Vietnam	119,145		65,565
Sweden	98,517		51,032
Switzerland	68,031		49,602
Philippines	35,754		25,406
United Kingdom	19,479		20,594
Korea	13,704		16,037
Australia	14,516		9,014
Taiwan	4,266		6,063
Other	31,680		23,044
Total Non-United States	2,037,493		1,055,141
	$	3,432,316	$	2,147,530

- Definition

Tabular disclosure of segment reporting. Includes, but is not limited to, reconciliation of reportable segment amount to corresponding consolidated total.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 31
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-URI https://asc.fasb.org/1943274/2147482810/280-10-50-31

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-Topic 280
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+ Details

Earnings Per Share - Schedule of Reconciliation of Basic and Diluted of Earnings (loss) Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
Numerator
Net earnings (loss) attributable to Coherent Corp.	$ 804,998	$ 49,364	$ (156,154)
Basic earnings (loss) available to common shareholders	769,896	(80,562)	(279,511)
Effect of dilutive securities:
Diluted earnings (loss) available to common shareholders	$ 804,998	$ (80,562)	$ (279,511)
Denominator
Weighted average shares, basic (in shares)	177,269	154,755	151,642
Effect of dilutive securities:
Common stock equivalents (in shares)	5,699	0	0
Series B Convertible Preferred Stock (in shares)	12,419	0	0
Diluted weighted average common shares (in shares)	195,387	154,755	151,642
Basic earnings (loss) per common share (in usd per share)	$ 4.34	$ (0.52)	$ (1.84)
Diluted earnings (loss) per common share (in usd per share)	$ 4.12	$ (0.52)	$ (1.84)
Common stock equivalents
Numerator
Deduct Series B dividends and deemed dividends	$ (35,102)	$ (129,926)	$ (123,357)
Preferred Stock Dividends
Effect of dilutive securities:
Add back Series B preferred stock dividends	31,751	0	0
Deemed Dividends
Effect of dilutive securities:
Add back Series B preferred stock dividends	$ 3,351	$ 0	$ 0

Revenue from Contracts with Customers - Schedule of Disaggregated Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
Disaggregation of Revenue [Line Items]
Total Revenues	$ 7,118,181	$ 5,810,115	$ 4,707,688
Datacenter & Communications
Disaggregation of Revenue [Line Items]
Total Revenues	5,274,629	3,755,164	2,631,369
Industrial
Disaggregation of Revenue [Line Items]
Total Revenues	$ 1,843,552	$ 2,054,951	$ 2,076,319

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Income Taxes (Tables)

12 Months Ended

Jun. 30, 2026

Income Tax Disclosure [Abstract]

Schedule of Components of Earnings (Losses) Before Income Taxes

The components of earnings (loss) before income taxes by jurisdiction were as follows ($000):



Year Ended June 30,	2026		2025		2024
U.S. loss	$	(84,745)	$	(445,586)	$	(540,048)
Non-U.S. income	932,478		539,767		392,401
Earnings (loss) before income taxes	$	847,733	$	94,181	$	(147,647)

Schedule of Components of Income Tax Expense (Benefit)

The components of the income tax expense (benefit) were as follows ($000):



Year Ended June 30,	2026		2025		2024
Current:
Federal	$	3,366	$	3,010	$	10,119
State	4,903		1,733		181
Foreign	251,313		154,815		103,640
Total Current	259,582		159,558		113,940
Deferred:
Federal	(54,967)		(50,454)		(68,955)
State	(1,633)		(7,217)		(186)
Foreign	(142,133)		(37,763)		(33,682)
Total Deferred	(198,733)		(95,434)		(102,823)
Total Income Tax Expense	$	60,849	$	64,124	$	11,117

Schedule of Principal Items Comprising Deferred Income Tax Assets and Liabilities

Principal items comprising deferred tax assets and liabilities were as follows ($000):



June 30,	2026		2025
Deferred income tax assets
Inventory capitalization	$	74,414	$	74,886

Non-deductible accruals	16,761		18,222
Accrued employee benefits	36,183		36,331
Net-operating loss and credit carryforwards	214,632		256,794
Share-based compensation expense	18,860		15,852
Other	9,225		9,564
R&D capitalization	215,663		168,998
Deferred revenue	12,194		15,376
ROU asset	64,962		37,785
Book over tax accumulated depreciation	6,321		—
Valuation allowances	(193,924)		(163,678)
Total deferred income tax assets	475,291		470,130
Deferred income tax liabilities
Tax over book accumulated depreciation	—		(14,038)
Intangible assets	(725,095)		(863,484)

Interest rate cap	(659)		(4,000)
Tax on unremitted earnings	(36,973)		(63,383)
Outside basis differences	(107,470)		(142,781)
ROU liability	(54,067)		(31,239)
Other	(22,203)		(9,515)
Total deferred income tax liabilities	(946,467)		(1,128,440)
Net deferred income taxes	$	(471,176)	$	(658,310)

Schedule of Reconciliation of Income Tax Expense

The reconciliation of income tax expense at the statutory U.S. federal rate to the reported income tax expense (benefit) in accordance with the guidance in ASU 2023-09 is as follows ($000):


Year Ended June 30,	2026		%
US Federal Statutory Tax Rate	$	178,024	21
State and local income taxes, net of federal income tax effect (1)	1,694		—
Foreign tax effects
China:
Research and development tax credit	(13,245)		(2)
Tax on foreign unremitted earnings	(19,373)		(2)
Withholding taxes	11,206		1
Other	(1,996)		—
Germany:
State and local income taxes	(11,029)		(1)
Loss on sale of shares	(16,142)		(2)
Enacted changes in tax laws or rates	(47,451)		(6)
Other	4,312		1
Hong Kong:
Gain on sale of shares	(11,242)		(1)
Other	(526)		—
Korea, Republic of (South):
Withholding taxes	9,561		1
Other	(5,082)		(1)
Switzerland:
Statutory tax rate difference between Switzerland and United States	(13,938)		(2)
State and local income taxes	9,652		1
Qualified domestic minimum top-up tax	8,939		1
Other	4,039		1
Other foreign jurisdictions	11,186		1
Effect of cross-border tax laws:
Global intangible low-taxed income	16,837		2
Other	1,717		—
Tax credits
Research and development tax credits	(16,326)		(2)
Changes in valuation allowances	37,883		5
Nontaxable or nondeductible items
Share-based payment awards	(18,949)		(2)
Other	8,244		1
Changes in unrecognized tax benefits	(62,799)		(7)
Other	(4,347)		(1)
	$	60,849	7

(1) State taxes in California, Kentucky, and Indiana made up the majority (greater than 50 percent) of the tax effect in this category.

The reconciliation of income tax expense at the statutory U.S. federal rate to the reported income tax expense (benefit) in accordance with the guidance prior to the adoption of ASU 2023-09 is as follows ($000):



Year Ended June 30,	2025		%	2024		%
Taxes at statutory rate	$	19,778	21	$	(31,006)	21
Increase (decrease) in taxes resulting from:
State income taxes-net of federal benefit	(4,265)		(5)	(22)		—
Taxes on non U.S. earnings	3,632		4	16,601		(11)
Valuation allowance	20,295		22	43,866		(30)
U.S. branch income	(1,216)		(1)	3,226		(2)
Noncontrolling interest	4,284		4	1,002		(1)
Research and manufacturing incentive deductions and credits	(26,396)		(28)	(41,387)		28
Stock compensation	2,153		2	13,294		(9)

GILTI and FDII	13,631		15	(629)		—
Uncertain tax positions	6,814		7	3,301		(2)
Notional interest	(10,174)		(11)	(2,521)		2
Assets held-for-sale	36,895		39	—		—

Other	(1,307)		(1)	5,392		(4)
	$	64,124	68	$	11,117	(8)

Schedule of Changes in Liability for Unrecognized Tax Benefits

Changes in the liability for unrecognized tax benefits for the fiscal years ended June 30, 2026, 2025 and 2024 were as follows ($000):



Year Ended June 30,	2026		2025		2024
Beginning balance	$	124,008	$	116,697	$	115,180
Increases in current year tax positions	6,800		9,660		5,168




Settlements	—		—		(2,970)
Expiration of statute of limitations	(67,049)		(2,349)		(681)
Ending balance	$	63,759	$	124,008	$	116,697

Schedule of Net Income Taxes Paid

The net income taxes paid (net of refunds received) by jurisdiction is as follows ($000):


June 30,	2026
Federal	$	14,882
State	3,274
Foreign
China	66,107
Germany	28,368
Switzerland	24,894
Sweden	15,977
Korea, Republic of (South)	13,656
Malaysia	11,314
Other	29,657
	$	208,129

Goodwill and Other Intangible Assets

12 Months Ended

Jun. 30, 2026

Intangible Asset, Goodwill and Other [Abstract]

Goodwill and Other Intangible Assets

Changes in the carrying amount of goodwill were as follows ($000):



	Year Ended June 30, 2026
	Datacenter & Communications		Industrial		Total
Balance-beginning of period	$	1,150,570	$	3,320,514	$	4,471,084
Other reclassifications(1)	—		24,493		24,493
Foreign currency translation	(170)		(119,810)		(119,980)
Balance-end of period	$	1,150,400	$	3,225,197	$	4,375,597

(1) Other reclassifications include adjustments to goodwill classified as held-for-sale. See Note 7. Assets Held-for-Sale and Sale of Businesses for further information.

Prior to our change in segments, goodwill as of June 30, 2025 was $1,038 million, $241 million, and $3,191 million in our Networking, Materials and Lasers segments, respectively.

The gross carrying amount and accumulated amortization of our intangible assets other than goodwill were as follows ($000):



	June 30, 2026						June 30, 2025
	Gross Carrying Amount		Accumulated Amortization		Net Book Value		Gross Carrying Amount		Accumulated Amortization		Net Book Value
Technology	$	1,505,754	$	(601,358)	$	904,396	$	1,534,066	$	(513,181)	$	1,020,885
Trade Names	438,471		(8,471)		430,000		438,471		(8,471)		430,000
Customer Lists	2,384,730		(834,652)		1,550,078		2,440,834		(686,972)		1,753,862
Backlog and Other	82,887		(82,887)		—		90,121		(90,121)		—
Total	$	4,411,842	$	(1,527,368)	$	2,884,474	$	4,503,492	$	(1,298,745)	$	3,204,747

Amortization expense recorded on intangible assets for the fiscal years ended June 30, 2026, 2025 and 2024 was $280 million, $303 million, and $288 million, respectively. The technology intangible assets are being amortized over a range of 60 to 240 months with a weighted-average remaining life of approximately 109 months, and the amortization is recorded in Cost of goods sold in our Consolidated Statements of Earnings (Loss). The customer lists are being amortized over 60 to 192 months with a weighted-average remaining life of approximately 127 months, and the amortization is recorded in SG&A in our Consolidated Statements of Earnings (Loss).

Amortization expense in the fiscal year ended June 30, 2025 includes a total of $17 million of impairment charges in the Industrial segment related to the abandonment of certain purchased technology and licenses, of which $14 million was recorded in Cost of goods sold and $3 million was recorded in R&D in our Consolidated Statements of Earnings (Loss). No impairment charges were included in amortization expense during the fiscal years ended June 30, 2026 or 2024.

In the fourth quarter of fiscal year 2026, we completed our annual impairment test of our indefinite-lived Coherent trade name, which had a carrying value of $430 million. Based on the results of the assessment, we concluded that the trade name was not impaired.

The estimated amortization expense for existing intangible assets for each of the five succeeding years is as follows ($000):


Year Ending June 30,
2027	$	277,273
2028	242,596
2029	274,005
2030	251,941
2031	240,404

Share-Based Compensation - Schedule of Restricted Share Unit and Cash-Based Restricted Share Unit (Details)	12 Months Ended
	Jun. 30, 2026 $ / shares shares
RSUs
Number of Units
Nonvested, beginning balance (in shares) \| shares	3,185,952
Granted (in shares) \| shares	1,213,655
Vested (in shares) \| shares	(1,698,871)
Forfeited (in shares) \| shares	(294,022)
Nonvested, ending balance (in shares) \| shares	2,406,714
Weighted Average Grant Date Fair Value
Nonvested, beginning balance (in usd per share) \| $ / shares	$ 61.13
Granted (in usd per share) \| $ / shares	114.31
Vested (in usd per share) \| $ / shares	101.99
Forfeited (in usd per share) \| $ / shares	110.98
Nonvested, ending balance (in usd per share) \| $ / shares	$ 89.99
Cash-Based Restricted Share Units
Number of Units
Nonvested, beginning balance (in shares) \| shares	9,699
Granted (in shares) \| shares	3,870
Vested (in shares) \| shares	(4,723)
Forfeited (in shares) \| shares	0
Nonvested, ending balance (in shares) \| shares	8,846
Weighted Average Grant Date Fair Value
Nonvested, beginning balance (in usd per share) \| $ / shares	$ 59.49
Granted (in usd per share) \| $ / shares	95.20
Vested (in usd per share) \| $ / shares	55.54
Forfeited (in usd per share) \| $ / shares	0
Nonvested, ending balance (in usd per share) \| $ / shares	$ 77.22

Cover - USD ($)	12 Months Ended
Cover - USD ($)	Jun. 30, 2026	Aug. 10, 2026	Dec. 31, 2025
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Jun. 30, 2026
Current Fiscal Year End Date	--06-30
Document Transition Report	false
Entity File Number	001-39375
Entity Registrant Name	COHERENT CORP.
Entity Incorporation, State or Country Code	PA
Entity Tax Identification Number	25-1214948
Entity Address, Address Line One	375 Saxonburg Blvd.
Entity Address, Postal Zip Code	16056
Entity Address, City or Town	Saxonburg
Entity Address, State or Province	PA
City Area Code	724
Local Phone Number	352-4455
Title of 12(b) Security	Common Stock, no par value
Trading Symbol	COHR
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Document Financial Statement Error Correction [Flag]	false
Entity Shell Company	false
Entity Public Float			$ 34,498,305,389
Entity Common Stock, Shares Outstanding		195,832,246
Amendment Flag	false
Document Fiscal Year Focus	2026
Document Fiscal Period Focus	FY
Entity Central Index Key	0000820318

Income Taxes - Schedule of Gross Operating Loss Carryforwards and Tax Credit Carryforwards (Details) $ in Thousands	Jun. 30, 2026 USD ($)
Federal
Operating loss carryforwards:
Loss carryforwards	$ 26,712
Loss carryforwards, indefinite	1,539
Foreign
Tax credit carryforwards:
Tax credit carryforwards	13,224
Operating loss carryforwards:
Loss carryforwards	15,715
Loss carryforwards, indefinite	32,883
State
Tax credit carryforwards:
Tax credit carryforwards	13,354
Tax credit carryforwards, indefinite	82,435
Operating loss carryforwards:
Loss carryforwards	350,496
Loss carryforwards, indefinite	72,869
Federal research and development credits \| Federal
Tax credit carryforwards:
Tax credit carryforwards	$ 102,973

Noncontrolling Interests (Tables)

12 Months Ended

Jun. 30, 2026

Noncontrolling Interest [Abstract]

Schedule of Noncontrolling Interests

The following table presents the activity in noncontrolling interests in Silicon Carbide ($000):



Year Ended June 30,	2026		2025


Balance-beginning of period	$	353,508	$	371,392

Share of foreign currency translation adjustments	(689)		1,423
Net loss	(18,114)		(19,307)
Balance-end of period	$	334,705	$	353,508

Leases

12 Months Ended

Jun. 30, 2026

Leases [Abstract]

Leases

We determine if an arrangement is a lease at inception for arrangements with an initial term of more than 12 months, and classify it as either finance or operating.

Finance leases are generally those that allow us to substantially utilize or pay for the entire asset over its estimated useful life. Finance lease assets are recorded in Property, plant and equipment, net, and finance lease liabilities within Other accrued liabilities and Other liabilities on our Consolidated Balance Sheets. Finance lease assets are amortized in operating expenses on a straight-line basis over the shorter of the estimated useful lives of the assets or the lease term, with the interest component for lease liabilities included in interest expense and recognized using the effective interest method over the lease term.

Operating leases are leases that do not qualify as finance leases and are recorded in Other assets and Operating lease current liabilities and Operating lease liabilities on our Consolidated Balance Sheets. Operating lease assets are amortized on a straight-line basis in operating expenses over the lease term.

Our lease liabilities are recognized based on the present value of the remaining fixed lease payments, over the lease term, using a discount rate of similarly secured borrowings available to the Company. For the purpose of lease liability measurement, we consider only payments that are fixed and determinable at the time of commencement. Any variable payments that depend on an index or rate are expensed as incurred. We account for non-lease components, such as common area maintenance, as a component of the lease, and include it in the initial measurement of our leased assets and corresponding liabilities. Our lease terms and conditions may include options to extend or terminate. An option is recognized when it is reasonably certain that we will exercise that option.

Our lease assets also include any lease payments made, and exclude any lease incentives received prior to commencement. Our lease assets are tested for impairment in the same manner as long-lived assets used in operations.

The following table presents lease costs, which include leases for arrangements with an initial term of more than 12 months, lease term, and discount rates ($000):



Year Ended June 30,	2026			2025			2024
Finance lease cost
Amortization of right-of-use assets	$	—		$	1,528		$	1,667
Interest on lease liabilities	845			947			1,040
Total finance lease cost	845			2,475			2,707
Operating lease cost	64,035			59,213			52,909
Sublease income	(1,373)			—			—
Total lease cost	$	63,507		$	61,688		$	55,616

Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from finance leases	$	845		$	947		$	1,040
Operating cash flows from operating leases	62,996			58,117			50,672
Financing cash flows from finance leases	1,926			1,749			1,584

Assets obtained in exchange for lease liabilities

Right-of-use assets obtained in exchange for new operating lease liabilities	$	135,996		$	51,357		$	64,385


Weighted-average remaining lease term (in years)
Finance leases	5.5			6.5			7.5
Operating leases	5.8			6.2			6.6

Weighted-average discount rate
Finance leases	5.6		%	5.6		%	5.6		%
Operating leases	6.1		%	6.9		%	6.8		%

The following table presents future minimum lease payments, which includes leases for arrangements with an initial term of more than 12 months ($000):


Future Years	Operating Leases		Finance Leases		Total
Year 1	$	77,516	$	2,847	$	80,363
Year 2	69,533		2,925		72,458
Year 3	60,689		3,006		63,695
Year 4	51,357		3,088		54,445
Year 5	40,652		3,173		43,825
Thereafter	74,763		1,521		76,284
Total minimum lease payments	374,510		16,560		391,070
Less: amounts representing interest	58,300		2,327		60,627
Present value of total lease liabilities	$	316,210	$	14,233	$	330,443

Leases

We determine if an arrangement is a lease at inception for arrangements with an initial term of more than 12 months, and classify it as either finance or operating.

The following table presents lease costs, which include leases for arrangements with an initial term of more than 12 months, lease term, and discount rates ($000):



Year Ended June 30,	2026			2025			2024
Finance lease cost
Amortization of right-of-use assets	$	—		$	1,528		$	1,667
Interest on lease liabilities	845			947			1,040
Total finance lease cost	845			2,475			2,707
Operating lease cost	64,035			59,213			52,909
Sublease income	(1,373)			—			—
Total lease cost	$	63,507		$	61,688		$	55,616

Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from finance leases	$	845		$	947		$	1,040
Operating cash flows from operating leases	62,996			58,117			50,672
Financing cash flows from finance leases	1,926			1,749			1,584

Assets obtained in exchange for lease liabilities

Right-of-use assets obtained in exchange for new operating lease liabilities	$	135,996		$	51,357		$	64,385


Weighted-average remaining lease term (in years)
Finance leases	5.5			6.5			7.5
Operating leases	5.8			6.2			6.6

Weighted-average discount rate
Finance leases	5.6		%	5.6		%	5.6		%
Operating leases	6.1		%	6.9		%	6.8		%

The following table presents future minimum lease payments, which includes leases for arrangements with an initial term of more than 12 months ($000):


Future Years	Operating Leases		Finance Leases		Total
Year 1	$	77,516	$	2,847	$	80,363
Year 2	69,533		2,925		72,458
Year 3	60,689		3,006		63,695
Year 4	51,357		3,088		54,445
Year 5	40,652		3,173		43,825
Thereafter	74,763		1,521		76,284
Total minimum lease payments	374,510		16,560		391,070
Less: amounts representing interest	58,300		2,327		60,627
Present value of total lease liabilities	$	316,210	$	14,233	$	330,443

Equity and Redeemable Preferred Stock - Schedule of Dividends Recognized (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
Class of Stock [Line Items]
Preferred stock dividends ($000)	$ 35,102	$ 129,926	$ 123,357
Common stock equivalents
Class of Stock [Line Items]
Dividends per share to preferred shareholders (in usd per share)	$ 163	$ 604
Preferred stock dividends ($000)	$ 31,751	$ 123,688
Preferred stock deemed dividends ($000)	$ 3,351	$ 6,238

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
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-Publisher FASB
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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-Section S99
-Paragraph 1
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Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
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+ Details

Share-Based Compensation (Tables)

12 Months Ended

Jun. 30, 2026

Share-Based Payment Arrangement [Abstract]

Schedule of Share-Based Compensation Expense

Share-based compensation expense for the fiscal years ended June 30, 2026, 2025 and 2024 is as follows ($000):



Year Ended June 30,	2026		2025		2024


Stock Options and Cash-Based Stock Appreciation Rights	$	7,336	$	334	$	1,149
Restricted Share Awards and Cash-Based Restricted Share Unit Awards	97,934		93,223		92,634
Performance Share Awards and Cash-Based Performance Share Unit Awards	77,391		57,767		21,912
Employee Stock Purchase Plan	11,143		9,648		11,200
	$	193,804	$	160,972	$	126,895

Schedule of Stock Option and Cash-Based Stock Appreciation Rights

Stock option and cash-based stock appreciation rights activity during the fiscal year ended June 30, 2026 was as follows:



	Stock Options			Cash-Based Stock Appreciation Rights
	Number of Shares	Weighted Average Exercise Price		Number of Rights	Weighted Average Exercise Price
Outstanding - June 30, 2025	897,096	$	35.43	25,133	$	36.93

Exercised	(518,994)	$	32.82	(8,695)	$	38.52
Forfeited and Expired	(1,566)	$	17.84	—	$	—
Outstanding - June 30, 2026	376,536	$	39.10	16,438	$	36.08
Exercisable - June 30, 2026	376,536	$	39.10	16,438	$	36.08

Schedule of Outstanding and Exercisable Stock Options

Outstanding and exercisable stock options at June 30, 2026 were as follows:


	Stock Options and Cash-Based Stock Appreciation Rights Outstanding				Stock Options and Cash-Based Stock Appreciation Rights Exercisable
	Number of	Weighted Average Remaining	Weighted Average		Number of	Weighted Average Remaining	Weighted Average
Range of	Shares or	Contractual Term	Exercise		Shares or	Contractual Term	Exercise
Exercise Prices	Rights	(Years)	Price		Rights	(Years)	Price

$18.07 - $24.34	15,035	0.14	$	21.67	15,035	0.14	$	21.67
$24.35 - $35.38	64,381	1.66	$	34.22	64,381	1.66	$	34.22
$35.39 - $36.89	203,679	3.36	$	36.33	203,679	3.36	$	36.33
$36.90 - $49.90	109,879	2.08	$	49.03	109,879	2.08	$	49.03
	392,974	2.60	$	38.97	392,974	2.60	$	38.97

Schedule of Restricted Share Unit and Cash-Based Restricted Share Unit

Restricted share unit and cash-based restricted share unit activity during the fiscal year ended June 30, 2026, was as follows:



	Restricted Share Units			Cash-Based Restricted Share Units
	Number of Units	Weighted Average Grant Date Fair Value		Number of Units	Weighted Average Grant Date Fair Value
Nonvested - June 30, 2025	3,185,952	$	61.13	9,699	$	59.49
Granted	1,213,655	$	114.31	3,870	$	95.20
Vested	(1,698,871)	$	101.99	(4,723)	$	55.54
Forfeited	(294,022)	$	110.98	—	$	—
Nonvested - June 30, 2026	2,406,714	$	89.99	8,846	$	77.22

Schedule of Performance Share Unit

Performance share unit activity relating to the Plan during the year ended June 30, 2026, was as follows:



	Performance Share Units
	Number of Units	Weighted Average Grant Date Fair Value
Nonvested - June 30, 2025	2,138,134	$	92.11
Granted	624,116	$	148.94
Vested	(315,066)	$	58.08
Forfeited	(72,581)	$	88.17
Performance Adjustments	23,282	58.08
Nonvested - June 30, 2026	2,397,885	$	110.06

Commitments and Contingencies	12 Months Ended
Commitments and Contingencies	Jun. 30, 2026
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies We have purchase commitments for materials and supplies as part of the ordinary conduct of business. A portion of the commitments are long-term and are based on minimum purchase requirements. Certain short-term raw material purchase commitments have a variable price component which is based on market pricing at the time of purchase. Due to the proprietary nature of some of our materials and processes, certain contracts may contain liquidated damage provisions for early termination. Based upon historical experience and current expectations, we do not believe that a significant amount of liquidated damages are reasonably likely to be incurred under these commitments. As of June 30, 2026, total future purchase commitments were $3.4 billion in fiscal 2027 and $8.4 billion thereafter. Regulatory Matters In January 2025, the Company received an inquiry from the Bureau of Industry and Security (“BIS”) concerning past product sales to Huawei; the Company is cooperating with BIS’s inquiry and conducting an internal review of those sales to determine what products are subject to Export Administrative Regulations (“EAR”) and consequently restricted for export, reexport, and transfer when Huawei is a party to the transaction. The Company has stopped shipping products to Huawei. The Company is currently in discussions with BIS regarding past product sales and cannot predict the outcome of those discussions. While the Company has received requests for additional information in this matter, the Company has not yet received any determination from BIS. In the event that the Company is found to have violated the EAR, the Company may be required to incur significant penalties and/or costs or expense as a result of the inquiry and to comply with, or remedy any violations of these regulations, but at this time, the Company is unable to determine an estimate or range of loss.

Assets Held-for-Sale and Sale of Businesses (Tables)

12 Months Ended

Jun. 30, 2026

Discontinued Operations and Disposal Groups [Abstract]

Schedule of Current Assets and Current Liabilities Classified Held for Sale

Current and noncurrent assets and liabilities classified as held-for-sale as of June 30, 2026 and June 30, 2025 are as follows ($000):



	June 30, 2026		June 30, 2025

Accounts receivable	$	628	$	43,353
Inventories	31,755		97,236
Prepaid and refundable income taxes	119		9,023
Prepaid and other current assets	3,127		3,067
Less: Impairment of assets held for sale	(7,015)		—
Total current assets held-for-sale	$	28,614	$	152,679

Property, plant & equipment, net	$	21,286	$	103,863
Goodwill	3,624		174,373
Intangible assets	—		141,647
Other assets	12,368		32
Less: Impairment of assets held-for-sale	(37,278)		(84,988)
Total noncurrent assets held-for-sale	$	—	$	334,927

Accounts payable	$	3,328	$	19,209
Accrued compensation and benefits	3,289		16,768
Operating lease current liabilities	387		2,441
Accrued income taxes payable	(510)		(226)
Other accrued liabilities	4,512		19,202
Total current liabilities held-for-sale	$	11,006	$	57,394

Deferred income taxes	$	—	$	14,785
Operating lease liabilities	1,076		5,980
Other liabilities	1,318		7,870
Total noncurrent liabilities held-for-sale	$	2,394	$	28,635

- Definition

Tabular disclosure of information related to a disposal group. Includes, but is not limited to, a discontinued operation, disposal classified as held-for-sale or disposed of by means other than sale or disposal of an individually significant component.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-Name Accounting Standards Codification
-Section 50
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-URI https://asc.fasb.org/1943274/2147482099/360-10-50-3

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+ Details

SCHEDULE II (Details) - USD ($) $ in Thousands	12 Months Ended
SCHEDULE II (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
Allowance for doubtful accounts
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	$ 12,189	$ 9,511	$ 8,005
Charged to Expense	6,042	8,181	5,161
Charged to Other Accounts	0	0	0
Assets Held-For-Sale	(13)	(117)	0
Deduction from Reserves	(5,025)	(5,386)	(3,655)
Balance at End of Year	13,193	12,189	9,511
Warranty reserves
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	32,754	44,193	47,563
Charged to Expense	24,404	26,352	34,362
Charged to Other Accounts	0	0	0
Assets Held-For-Sale	(869)	(4,299)	0
Deduction from Reserves	(28,835)	(33,492)	(37,732)
Balance at End of Year	27,454	32,754	44,193
Deferred tax asset valuation allowance
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	163,678	154,830	97,180
Charged to Expense	48,095	15,413	57,968
Charged to Other Accounts	277	3,577	(318)
Assets Held-For-Sale	(18,126)	(10,142)	0
Deduction from Reserves	0	0	0
Balance at End of Year	$ 193,924	$ 163,678	$ 154,830

Fair Value of Financial Instruments - Schedule of Fair Value and Carrying Value of Debt Facilities (Details) - Fair Value, Inputs, Level 2 - USD ($) $ in Thousands	Jun. 30, 2026	Jun. 30, 2025
Fair Value \| Senior Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt facilities	$ 974,437	$ 973,190
Fair Value \| Term A Facility
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt facilities	1,142,051	632,960
Fair Value \| Term B Facility
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt facilities	1,082,030	2,108,938
Carrying Value \| Senior Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt facilities	986,057	985,034
Carrying Value \| Term A Facility
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt facilities	1,134,859	616,234
Carrying Value \| Term B Facility
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt facilities	$ 1,058,772	$ 2,065,880

- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-10

Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482881/825-10-55-10

Reference 4: http://www.xbrl.org/2003/role/exampleRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 12
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482881/825-10-55-12

Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 11
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-11

Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 11
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-11

Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 8: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 9: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 10: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 28
-Subparagraph (c)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-28

+ Details

Other Accrued Liabilities (Tables)

12 Months Ended

Jun. 30, 2026

Payables and Accruals [Abstract]

Schedule of Other Accrued Liabilities

The components of other accrued liabilities were as follows ($000):



June 30,	2026		2025
Contract liabilities	$	48,098	$	62,967
Warranty reserve	27,454		32,754
Current liabilities held-for-sale	11,006		57,394
Other accrued liabilities	261,432		182,449
	$	347,990	$	335,564

Share-Based Compensation - Schedule of Performance Share Unit (Details)	12 Months Ended
	Jun. 30, 2026 $ / shares shares
Number of Units
Performance adjustments (in shares) \| shares	23,282
Weighted Average Grant Date Fair Value
Performance adjustments (in usd per share) \| $ / shares	$ 58.08
Performance Share Units
Number of Units
Nonvested, beginning balance (in shares) \| shares	2,138,134
Granted (in shares) \| shares	624,116
Vested (in shares) \| shares	(315,066)
Forfeited (in shares) \| shares	(72,581)
Nonvested, ending balance (in shares) \| shares	2,397,885
Weighted Average Grant Date Fair Value
Nonvested, beginning balance (in usd per share) \| $ / shares	$ 92.11
Granted (in usd per share) \| $ / shares	148.94
Vested (in usd per share) \| $ / shares	58.08
Forfeited (in usd per share) \| $ / shares	88.17
Nonvested, ending balance (in usd per share) \| $ / shares	$ 110.06

Other Accrued Liabilities

12 Months Ended

Jun. 30, 2026

Payables and Accruals [Abstract]

Other Accrued Liabilities

The components of other accrued liabilities were as follows ($000):



June 30,	2026		2025
Contract liabilities	$	48,098	$	62,967
Warranty reserve	27,454		32,754
Current liabilities held-for-sale	11,006		57,394
Other accrued liabilities	261,432		182,449
	$	347,990	$	335,564

Fair Value of Financial Instruments

12 Months Ended

Jun. 30, 2026

Fair Value Disclosures [Abstract]

Fair Value of Financial Instruments

The FASB defines fair value as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous markets for the asset and liability in an orderly transaction between market participants at the measurement date. We estimate fair value of our financial instruments utilizing an established three-level hierarchy in accordance with U.S. GAAP. The hierarchy is based upon the transparency of inputs to the valuation of an asset or liability as of the measurement date as follows:

•Level 1 – Valuation is based upon unadjusted quoted prices for identical assets or liabilities in active markets.

•Level 2 – Valuation is based upon quoted prices for similar assets and liabilities in active markets, or other inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the financial instruments.

•Level 3 – Valuation is based upon other unobservable inputs that are significant to the fair value measurements.

The classification of fair value measurements within the hierarchy is based upon the lowest level of input that is significant to the measurement.

On February 23, 2022, we entered into an interest rate cap (the “Cap”) with an effective date of July 1, 2023. On March 20, 2023, we amended the Cap to replace the current reference rate (LIBOR) with SOFR, to be consistent with Amendment No. 1 to the Credit Agreement. See Note 8. Debt for further information. The Cap manages our exposure to interest rate movements on a portion of our floating rate debt. The Cap provides us with the right to receive payment if one-month SOFR exceeds 1.92%. Beginning in July 2023, we began to pay a fixed monthly premium based on an annual rate of 0.853% for the Cap. On September 1, 2024, we increased the notional amount from $500 million to $1,500 million. The fair value of the interest rate cap of $3 million and $17 million is recognized in the Consolidated Balance Sheet within Prepaid and other current assets as of June 30, 2026 and June 30, 2025. Cash flows from hedging activities are reported in the Consolidated Statements of Cash Flows in the same classification as the hedged item, generally as a component of cash flows from operations.

The Cap, as amended, is designed to mirror the terms of the Credit Agreement as amended on March 31, 2023. We designated the Cap as a cash flow hedge of the variability of the SOFR based interest payments on the Term Facilities. Every period over the life of the hedging relationship, the entire change in fair value related to the hedging instrument will first be recorded within AOCI. Amounts accumulated in AOCI are reclassified into interest expense in the same period or periods in which interest expense is recognized on the Credit Agreement, or its direct replacement. The fair value of the Cap is determined using widely accepted valuation techniques and reflects the contractual terms of the Cap including the period to maturity, and while there are no quoted prices in active markets, it uses observable market-based inputs, including interest rate curves. The fair value analysis also considers a credit valuation adjustment to reflect nonperformance risk of both the Company and the single counterparty. The Cap is classified as a Level 2 item within the fair value hierarchy.

We estimated the fair value of the Senior Notes and the Term Facilities (“Debt Facilities”) based on quoted market prices as of the last trading day prior to June 30, 2026; however, the Debt Facilities have only a limited trading volume and as such this fair value estimate is not necessarily the value at which the Debt Facilities could be retired or transferred. We concluded that this fair value measurement should be categorized within Level 2. The carrying values of the Debt Facilities are net of unamortized discount and issuance costs. See Note 8. Debt for details on the Company’s Debt Facilities.

The fair value and carrying value of the Debt Facilities were as follows ($000):



	June 30, 2026				June 30, 2025
	Fair Value		Carrying Value		Fair Value		Carrying Value
Senior Notes	$	974,437	$	986,057	$	973,190	$	985,034
Term A Facility	1,142,051		1,134,859		632,960		616,234
Term B Facility	1,082,030		1,058,772		2,108,938		2,065,880

Our borrowings, including our lease obligations and the Debt Facilities, are considered Level 2 among the fair value hierarchy.

Cash and cash equivalents are considered Level 1 among the fair value hierarchy and approximate fair value because of the short-term maturity of those investments. At June 30, 2026, time deposits of $825 million, with maturities of one year or less, are recorded in Short-term investments on the Consolidated Balance Sheet are considered Level 1 among the fair value hierarchy and approximate fair value because of the short-term maturity of those investments.

At June 30, 2026, total restricted cash was $606 million, which includes $604 million held by Silicon Carbide LLC and restricted for use only by that subsidiary, and $2 million of cash restricted for other purposes in other entities. At June 30, 2025, total restricted cash was $724 million, which includes $720 million of cash held by Silicon Carbide LLC and restricted for use only by that subsidiary, and $4 million of cash restricted for other purposes in other entities. The restricted cash is invested in money market accounts and time deposits, with maturities of one year or less, that are held-to-maturity, are considered Level 1 among the fair value hierarchy and approximate fair value. Restricted cash that is expected to be spent and released from restriction after 12 months is classified as non-current on the Consolidated Balance Sheets.

We, from time to time, purchase foreign currency forward exchange contracts that permit us to sell specified amounts of these foreign currencies for pre-established U.S. dollar amounts at specified dates that represent assets or liabilities on the balance sheets of certain subsidiaries. These contracts are entered into for the purpose of limiting translational exposure to changes in currency exchange rates and which otherwise would expose our earnings, on the revaluation of our aggregate net assets or liabilities in respective currencies, to foreign currency risk. At June 30, 2026, we had one foreign currency forward contract recorded at fair value. The fair values of these instruments, when outstanding, are measured using valuations based upon quoted prices for similar assets and liabilities in active markets (Level 2) and are valued by reference to similar financial instruments, adjusted for credit risk and restrictions and other terms specific to the contracts. Realized losses related to this contract for the year ended June 30, 2026 were $2 million, realized gains related to these contracts for the year ended June 30, 2025 were $16 million, and realized losses related to these contracts for the year ended June 30, 2024 were $15 million, and were included in Other income, net in the Consolidated Statements of Earnings (Loss)

Our non-financial assets, such as goodwill, intangible assets, and property, plant and equipment, are assessed for impairment when an event or circumstance indicates that a decline in value may have occurred. See Note 1. Nature of Business and Summary of Significant Accounting Policies for further information.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 107
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482078/820-10-55-107

Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 100
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482078/820-10-55-100

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6A
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2E
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2E

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6A
-Subparagraph (h)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6A
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6A
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6A
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (h)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (g)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 940
-SubTopic 820
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478119/940-820-50-1

+ Details

Income Taxes - Schedule of Reconciliation of Income Tax Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract]
Taxes at statutory rate	$ 178,024	$ 19,778	$ (31,006)
State income taxes-net of federal benefit	1,694	(4,265)	(22)
Other	(4,347)	(1,307)	5,392
State and local income taxes		3,632	16,601
Global intangible low-taxed income	16,837
Other	1,717
Valuation allowance	37,883	20,295	43,866
Stock compensation	(18,949)	2,153	13,294
Other	8,244
Uncertain tax positions	(62,799)	6,814	3,301
Total Income Tax Expense	$ 60,849	$ 64,124	$ 11,117
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Taxes at statutory rate	21.00%	21.00%	21.00%
State income taxes-net of federal benefit	0.00%	(5.00%)	0.00%
Taxes on non U.S. earnings		4.00%	(11.00%)
Other	(1.00%)	(1.00%)	(4.00%)
Global intangible low-taxed income	2.00%
Other	0.00%
Valuation allowance	5.00%	22.00%	(30.00%)
Stock compensation	(2.00%)	2.00%	(9.00%)
Uncertain tax positions	(7.00%)	7.00%	(2.00%)
Total Income Tax Expense (Benefit)	7.00%	68.00%	(8.00%)
Tax Jurisdiction of Domicile [Extensible Enumeration]	United States	United States	United States
China
Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract]
Research and development tax credit	$ (13,245)
Tax on foreign unremitted earnings	(19,373)
Withholding taxes	11,206
Other	$ (1,996)
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Research and development tax credit	(2.00%)
Tax on foreign unremitted earnings	(2.00%)
Withholding taxes	1.00%
Other	0.00%
Germany
Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract]
Other	$ 4,312
State and local income taxes	(11,029)
Loss on sale of shares	(16,142)
Enacted changes in tax laws or rates	$ (47,451)
Effective Income Tax Rate Reconciliation, Percent [Abstract]
State income taxes-net of federal benefit	(1.00%)
Loss on sale of shares	(2.00%)
Enacted changes in tax laws or rates	(6.00%)
Other	1.00%
Hong Kong:
Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract]
Other	$ (526)
Gain on sale of shares	$ (11,242)
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Other	0.00%
Gain on sale of shares	(1.00%)
Korea
Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract]
Withholding taxes	$ 9,561
State and local income taxes	$ (5,082)
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Withholding taxes	1.00%
Taxes on non U.S. earnings	(1.00%)
Switzerland
Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract]
State income taxes-net of federal benefit	$ 9,652
Other	4,039
State and local income taxes	(13,938)
Qualified domestic minimum top-up tax	$ 8,939
Effective Income Tax Rate Reconciliation, Percent [Abstract]
State income taxes-net of federal benefit	1.00%
Taxes on non U.S. earnings	(2.00%)
Other	1.00%
Qualified domestic minimum top-up tax	1.00%
Other foreign jurisdictions
Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract]
Other	$ 11,186
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Other	1.00%
United States
Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract]
Research and development tax credit	$ (16,326)
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Research and development tax credit	(2.00%)
Other	1.00%

Recently Issued Financial Accounting Standards	12 Months Ended
Recently Issued Financial Accounting Standards	Jun. 30, 2026
Accounting Policies [Abstract]
Recently Issued Financial Accounting Standards	Recently Issued Financial Accounting Standards In December 2023, the FASB issued Accounting Standards Update (“ASU”) 2023-09, “Income Taxes (Topic 740): Improvements to Income Tax Disclosures” (“ASU 2023-09”). ASU 2023-09 includes amendments that further enhance income tax disclosures, primarily through standardization and disaggregation of rate reconciliation categories and income taxes paid by jurisdiction. ASU 2023-09 was effective for annual periods beginning after December 15, 2024, on either a prospective or retrospective basis. Early adoption was permitted. The Company adopted the standard in fiscal 2026. See Note 18. Income Taxes for further information. In November 2024, the FASB issued ASU 2024-03, “Income Statement-Reporting Comprehensive Income-Expense Disaggregation Disclosures (Subtopic 220-40), Disaggregation of Income Statement Expenses.” This ASU requires disclosure about specific types of expenses included in expense captions including purchases of inventory, employee compensation, depreciation, amortization, and depletion. This ASU is effective for our annual disclosures starting in fiscal year 2028 and interim periods starting in fiscal year 2029. Early adoption is permitted. A public entity should apply the amendments in this ASU on a prospective basis with the option to apply the standard retrospectively. The Company is currently evaluating this ASU to determine its impact on the Company’s disclosures.

- Definition

The entire disclosure for change in accounting principle. Includes, but is not limited to, nature, reason, and method of adopting amendment to accounting standards or other change in accounting principle.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 20
-Name Accounting Standards Codification
-Section 65
-Paragraph 7
-Subparagraph (i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480528/815-20-65-7

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 5
-Subparagraph (SAB Topic 11.M.Q2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480530/250-10-S99-5

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 65
-Paragraph 3
-Subparagraph (e)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479719/606-10-65-3

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 65
-Paragraph 3
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479719/606-10-65-3

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 65
-Paragraph 8
-Subparagraph (f)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480339/815-10-65-8

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 65
-Paragraph 8
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480339/815-10-65-8

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 350
-SubTopic 40
-Name Accounting Standards Codification
-Section 65
-Paragraph 4
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482705/350-40-65-4

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 350
-SubTopic 40
-Name Accounting Standards Codification
-Section 65
-Paragraph 4
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482705/350-40-65-4

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 350
-SubTopic 40
-Name Accounting Standards Codification
-Section 65
-Paragraph 4
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482705/350-40-65-4

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483443/250-10-50-1

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 65
-Paragraph 2
-Subparagraph (e)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479719/606-10-65-2

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 65
-Paragraph 2
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Reference 13: http://www.xbrl.org/2003/role/disclosureRef
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Reference 14: http://www.xbrl.org/2003/role/disclosureRef
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Reference 15: http://www.xbrl.org/2003/role/disclosureRef
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Reference 16: http://www.xbrl.org/2003/role/disclosureRef
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Reference 17: http://www.xbrl.org/2003/role/disclosureRef
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Reference 18: http://www.xbrl.org/2003/role/disclosureRef
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Reference 19: http://www.xbrl.org/2003/role/disclosureRef
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Reference 28: http://www.xbrl.org/2003/role/disclosureRef
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Reference 30: http://www.xbrl.org/2003/role/disclosureRef
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Reference 32: http://www.xbrl.org/2003/role/disclosureRef
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Reference 33: http://www.xbrl.org/2003/role/disclosureRef
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Reference 34: http://www.xbrl.org/2003/role/disclosureRef
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Reference 35: http://www.xbrl.org/2003/role/disclosureRef
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Reference 36: http://www.xbrl.org/2003/role/disclosureRef
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Reference 37: http://www.xbrl.org/2003/role/disclosureRef
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Reference 38: http://www.xbrl.org/2003/role/disclosureRef
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Reference 39: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

Assets Held-for-Sale and Sale of Businesses - Schedule of Current Assets and Current Liabilities Classified Held for Sale (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Jun. 30, 2025
Disposal Group, Including Discontinued Operations [Line Items]
Total current liabilities held-for-sale	$ 11,006	$ 57,394
Disposal Group, Held-for-Sale, Not Discontinued Operations \| Various Coherent Entities
Disposal Group, Including Discontinued Operations [Line Items]
Accounts receivable	628	43,353
Inventories	31,755	97,236
Prepaid and refundable income taxes	119	9,023
Less: Impairment of assets held-for-sale	(37,278)	(84,988)
Prepaid and other current assets	3,127	3,067
Less: Impairment of assets held for sale	(7,015)	0
Total current assets held-for-sale	28,614	152,679
Property, plant & equipment, net	21,286	103,863
Goodwill	3,624	174,373
Intangible assets	0	141,647
Other assets	12,368	32
Total noncurrent assets held-for-sale	0	334,927
Accounts payable	3,328	19,209
Accrued compensation and benefits	3,289	16,768
Operating lease current liabilities	387	2,441
Accrued income taxes payable	(510)	(226)
Other accrued liabilities	4,512	19,202
Total current liabilities held-for-sale	11,006	57,394
Deferred income taxes	0	14,785
Operating lease liabilities	1,076	5,980
Other liabilities	1,318	7,870
Total noncurrent liabilities held-for-sale	$ 2,394	$ 28,635

Noncontrolling Interests - Additional Information (Details) - USD ($) $ in Thousands			12 Months Ended
	Dec. 04, 2023	Oct. 10, 2023	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
Noncontrolling Interest [Line Items]
Sale of shares to noncontrolling interests		$ 1,000,000	$ 0	$ 0	$ 1,000,000
Silicon Carbide
Noncontrolling Interest [Line Items]
Non-controlling ownership interest percentage		75.00%
Silicon Carbide \| Denso Corporation
Noncontrolling Interest [Line Items]
Sale of stock, value of shares issued		$ 500,000
Silicon Carbide \| Denso Corporation \| Private Placement \| Common Class A
Noncontrolling Interest [Line Items]
Shares issued and sold (in shares)	16,666,667
Silicon Carbide \| Mitsubishi Electric Corporation
Noncontrolling Interest [Line Items]
Sale of stock, value of shares issued		$ 500,000
Silicon Carbide \| Mitsubishi Electric Corporation \| Private Placement \| Common Class A
Noncontrolling Interest [Line Items]
Shares issued and sold (in shares)	16,666,667
Denso Corporation \| Silicon Carbide
Noncontrolling Interest [Line Items]
Equity investment, ownership percentage		12.50%
Mitsubishi Electric Corporation \| Silicon Carbide
Noncontrolling Interest [Line Items]
Equity investment, ownership percentage		12.50%

Share-Based Compensation - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock option issued (in shares)	0	0	0
Aggregate intrinsic value of stock options and cash-based stock appreciation rights, outstanding	$ 140	$ 50	$ 61
Aggregate intrinsic value of stock options and cash-based stock appreciation rights, exercisable	140	50	61
Total intrinsic value of stock options and cash-based stock appreciation rights, exercised	$ 75	36	25
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock authorized for issuance under the plan (in shares)	16,615,000
Shares available to be issued (in shares)	6,500,000
Percentage of employee payroll deductions authorized	15.00%
Percentage of fair market value of common stock to purchase shares	85.00%
Offering period	6 months
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Units granted (in shares)	1,213,655
Performance Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Units granted (in shares)	624,116
Share based compensation expense attributable to non-vested shares	$ 127
Unrecognized compensation cost, weighted-average period of recognition, years	1 year 3 months 7 days
Total fair value of restricted stock grant	$ 88	88	113
Total fair value of restricted stock vested	$ 11	$ 17	$ 14
Performance Stock Units \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award grants performance period	12 months
Performance Stock Units \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award grants performance period	36 months
Restricted Share Awards and Cash-Based Restricted Share Unit Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	3 years
Share based compensation expense attributable to non-vested shares	$ 140
Shares issued (in shares)	0	0	0
Total fair value of restricted stock grant	$ 139	$ 127	$ 110
Total fair value of restricted stock vested	$ 235	$ 185	$ 74

Earnings Per Share (Tables)

12 Months Ended

Jun. 30, 2026

Earnings Per Share [Abstract]

Schedule of Reconciliation of Basic and Diluted Earnings (Loss) Per Share



Year Ended June 30,	2026		2025		2024


Numerator
Net earnings (loss) attributable to Coherent Corp.	$	804,998	$	49,364	$	(156,154)


Deduct Series B dividends and deemed dividends	(35,102)		(129,926)		(123,357)
Basic earnings (loss) available to common shareholders	$	769,896	$	(80,562)	$	(279,511)

Effect of dilutive securities:


Add back Series B preferred stock dividends	$	31,751	$	—	$	—
Add back Series B deemed dividends	3,351		—		—
Diluted earnings (loss) available to common shareholders	$	804,998	$	(80,562)	$	(279,511)

Denominator
Weighted average shares	177,269		154,755		151,642
Effect of dilutive securities:
Common stock equivalents	5,699		—		—


Series B Convertible Preferred Stock	12,419		—		—
Diluted weighted average common shares	195,387		154,755		151,642

Basic earnings (loss) per common share	$	4.34	$	(0.52)	$	(1.84)

Diluted earnings (loss) per common share	$	4.12	$	(0.52)	$	(1.84)

Schedule of Potential Shares Excluded from Calculation of Diluted Net Loss Per Share

The following table presents potential shares of common stock excluded from the calculation of diluted net earnings (loss) per share, as their effect would have been anti-dilutive (000):



Year Ended June 30,	2026	2025	2024




Series B Convertible Preferred Stock	—	29,103	27,691
Common stock equivalents	—	4,548	2,940
Total anti-dilutive shares	—	33,651	30,631

Debt - Schedule of Principal Repayments for Indebtedness (Details) $ in Thousands	Jun. 30, 2026 USD ($)
Debt Disclosure [Abstract]
2027	$ 7,916
2028	34,375
2029	93,629
2030	2,135,625
2031	985,937
Thereafter	0
Total	$ 3,257,482

Fair Value of Financial Instruments (Tables)

12 Months Ended

Jun. 30, 2026

Fair Value Disclosures [Abstract]

Schedule of Fair Value and Carrying Value of Debt Facilities

The fair value and carrying value of the Debt Facilities were as follows ($000):



	June 30, 2026				June 30, 2025
	Fair Value		Carrying Value		Fair Value		Carrying Value
Senior Notes	$	974,437	$	986,057	$	973,190	$	985,034
Term A Facility	1,142,051		1,134,859		632,960		616,234
Term B Facility	1,082,030		1,058,772		2,108,938		2,065,880

Nature of Business and Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024	Apr. 01, 2026	Jun. 30, 2023
Significant Accounting Policies [Line Items]
Restricted cash	$ 606,000
Restricted cash, current	35,156	$ 8,897
Restricted cash, non-current	571,222	714,816
Estimated AMIC credit	39,000	41,000
Selling, general and administrative	1,044,566	926,451	$ 854,001
Goodwill	$ 4,375,597	$ 4,471,084	$ 4,464,329
Redeemable convertible preferred stock shares outstanding (in shares)	0	215,000	215,000		215,000
Convertible preferred stock, shares issued (in shares)	0	215,000
Supplier financing program obligation	$ 27,000	$ 18,000
Supplier Finance Program, Obligation, Statement of Financial Position [Extensible Enumeration]	Accounts payable	Accounts payable
Total supplier invoices paid	$ 104,000	$ 76,000
Amortization period of sales commissions expensed	1 year
Lasers Reporting Unit
Significant Accounting Policies [Line Items]
Goodwill	$ 3,100,000
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount				8.00%
Goodwill, Fair Value Adjustment, Measurement Input, Discount Rate				11.00%
Location, Statement of Income, Balance [Axis]: us-gaap:SellingGeneralAndAdministrativeExpense
Significant Accounting Policies [Line Items]
Estimated AMIC credit	$ 21,000
Series B-1 Preferred Stock
Significant Accounting Policies [Line Items]
Preferred stock, accretion period	10 years
Minimum
Significant Accounting Policies [Line Items]
Estimated useful lives of finite-lived intangible assets	1 year
Maximum
Significant Accounting Policies [Line Items]
Estimated useful lives of finite-lived intangible assets	20 years
Building, Building Improvements and Land Improvements \| Minimum
Significant Accounting Policies [Line Items]
Estimated useful lives	10 years
Building, Building Improvements and Land Improvements \| Maximum
Significant Accounting Policies [Line Items]
Estimated useful lives	30 years
Machinery and equipment \| Minimum
Significant Accounting Policies [Line Items]
Estimated useful lives	3 years
Machinery and equipment \| Maximum
Significant Accounting Policies [Line Items]
Estimated useful lives	20 years

Audit Information	12 Months Ended
Audit Information	Jun. 30, 2026
Audit Information [Abstract]
Auditor Firm ID	42
Auditor Location	Pittsburgh, Pennsylvania
Auditor Name	Ernst & Young LLP

Inventories (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Jun. 30, 2025
Inventory Disclosure [Abstract]
Raw materials	$ 660,487	$ 394,682
Work in progress	1,556,956	824,360
Finished goods	363,600	218,594
Total inventories	$ 2,581,043	$ 1,437,636

Debt - Debt Assumed Through Acquisition (Details) $ in Thousands		12 Months Ended		30 Months Ended
	Dec. 10, 2021 USD ($)	Jun. 30, 2026 USD ($)	Jun. 30, 2025 USD ($)	Dec. 31, 2024 term_loan	Jul. 01, 2022 term_loan
Debt Instrument [Line Items]
Total		$ 3,257,482
Number Of Term Loans \| term_loan					3
Number Of Term Loans Repaid \| term_loan				2
Senior Notes \| 5.00% Senior Notes
Debt Instrument [Line Items]
Total		$ 990,000	$ 990,000
Interest rate on debt	5.00%	5.00%
Aggregate principal amount of bridge loan	$ 990,000
Interest expense incurred		$ 51,000	$ 50,000
Senior Notes \| 5.00% Senior Notes \| Senior Notes, Redemption, Period One
Debt Instrument [Line Items]
Redemption price, percentage of principal amount	100.00%
Senior Notes \| 5.00% Senior Notes \| Senior Notes, Redemption, Period Two
Debt Instrument [Line Items]
Redemption percentage	40.00%
Senior Notes \| 5.00% Senior Notes \| Senior Notes, Redemption, Period Three
Debt Instrument [Line Items]
Redemption price, percentage of principal amount	105.00%
Secured Debt \| Line of credit
Debt Instrument [Line Items]
Total		$ 14,000
Interest rate on debt		1.55%

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025
Statement of Financial Position [Abstract]
Accounts receivable, allowance for doubtful accounts	$ 13,193	$ 12,189
Series B redeemable convertible preferred stock, cumulative percentage	5.00%	5.00%
Series B redeemable convertible preferred stock, shares issued (in shares)	0	215,000
Series B redeemable convertible preferred stock redemption value	$ 0	$ 2,540,110
Common stock, shares authorized (in shares)	300,000,000	300,000,000
Common stock, shares issued (in shares)	212,615,894	171,849,325
Treasury stock (in shares)	16,863,102	16,294,119

- Definition

The number of securities classified as temporary equity that have been sold (or granted) to the entity's shareholders. Securities issued include securities outstanding and securities held in treasury. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer.

+ References + Details

Property, Plant and Equipment

12 Months Ended

Jun. 30, 2026

Property, Plant, and Equipment [Abstract]

Property, Plant and Equipment

Property, plant and equipment consists of the following ($000):



June 30,	2026		2025

Land and improvements	$	58,996	$	59,543
Buildings and improvements	1,030,787		881,578
Machinery and equipment	2,916,096		2,188,509
Construction in progress	776,511		363,129

	4,782,390		3,492,759
Less accumulated depreciation	(1,783,047)		(1,615,252)
Property, plant and equipment, net	$	2,999,343	$	1,877,507

- Definition

The entire disclosure for property, plant, and equipment. Includes, but is not limited to, land and land improvement; building; machinery and equipment; furniture and fixture; and work of art, historical treasure, or similar asset classified as collection.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 360
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482099/360-10-50-3

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 360
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482099/360-10-50-3

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 360
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/360/tableOfContent

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 360
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482099/360-10-50-2

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 360
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 13
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482130/360-10-45-13

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 360
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 5.CC)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480091/360-10-S99-2

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-SubTopic 360
-Topic 958
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477798/958-360-50-6

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)
-SubTopic 360
-Topic 958
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477798/958-360-50-1

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-SubTopic 360
-Topic 958
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477798/958-360-50-7

+ Details

Segment and Geographic Reporting - Schedule of Financial Information by Segment (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
Segment Reporting [Line Items]
Revenues		$ (7,118,181)	$ (5,810,115)	$ (4,707,688)
Segment cost of goods sold and operating expenses		6,270,448	5,715,934	4,855,335
Segment profit		1,752,492	1,311,277	797,674
Share-based compensation		(193,804)	(160,972)	(126,895)
Restructuring costs		(63,390)	(160,081)	(27,054)
Impairment of assets held-for-sale		(64,404)	(84,988)	0
Amortization of intangibles		(280,000)	(303,000)	(288,000)
Interest expense		(190,267)	(243,251)	(288,475)
Gain on sale of business		124,133	0	0
Other income, net		140,139	47,554	44,707
Earnings (Loss) Before Income Taxes		847,733	94,181	(147,647)
Consulting and legal costs related to projects to integrate recent acquisitions		80,000	38,000
Datacenter & Communications
Segment Reporting [Line Items]
Revenues		(5,274,629)	(3,755,164)	(2,631,369)
Industrial
Segment Reporting [Line Items]
Revenues		(1,843,552)	(2,054,951)	(2,076,319)
Impairment of assets held-for-sale	$ (85,000)
Operating Segments
Segment Reporting [Line Items]
Revenues		(7,118,181)	(5,810,115)	(4,707,688)
Segment cost of goods sold and operating expenses		5,506,068	4,614,530	4,001,616
Operating Segments \| Datacenter & Communications
Segment Reporting [Line Items]
Revenues		(5,274,629)	(3,755,164)	(2,631,369)
Segment cost of goods sold and operating expenses		3,985,646	2,889,961	2,167,905
Segment profit		1,329,719	903,787	499,968
Operating Segments \| Industrial
Segment Reporting [Line Items]
Revenues		(1,843,552)	(2,054,951)	(2,076,319)
Segment cost of goods sold and operating expenses		1,520,422	1,724,569	1,833,711
Segment profit		422,773	407,490	297,706
Impairment of assets held-for-sale		(64,000)
Inter-segment revenues
Segment Reporting [Line Items]
Revenues		140,378	115,692	91,602
Inter-segment revenues \| Datacenter & Communications
Segment Reporting [Line Items]
Revenues		40,735	38,584	36,504
Inter-segment revenues \| Industrial
Segment Reporting [Line Items]
Revenues		99,643	77,108	55,098
Corporate Segment
Segment Reporting [Line Items]
Corporate and centralized function costs		(296,748)	(274,333)	(179,624)
Share-based compensation		(193,804)	(160,972)	(126,895)
Restructuring costs		(63,390)	(160,081)	(27,054)
Impairment of assets held-for-sale		(64,404)	(84,988)	0
Integration, site consolidation and other costs		(80,084)	(38,237)	(79,820)
Amortization of intangibles		(280,334)	(302,788)	(288,160)
Interest expense		(190,267)	(243,251)	(288,475)
Gain on sale of business		124,133	0	0
Other income, net		$ 140,139	$ 47,554	$ 44,707

Other Accrued Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Jun. 30, 2025
Payables and Accruals [Abstract]
Contract liabilities	$ 48,098	$ 62,967
Warranty reserve	27,454	32,754
Current liabilities held-for-sale	11,006	57,394
Other accrued liabilities	261,432	182,449
Other accrued liabilities	$ 347,990	$ 335,564

- Definition

Amount classified as liabilities attributable to disposal group held for sale or disposed of, expected to be disposed of within one year or the normal operating cycle, if longer.

+ References + Details

Commitments and Contingencies (Details) $ in Millions	Jun. 30, 2026 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Commitments, 2027	$ 3,400
Commitments, thereafter	$ 8,400

Revenue from Contracts with Customers

12 Months Ended

Jun. 30, 2026

Revenue from Contract with Customer [Abstract]

Revenue from Contracts with Customers

We disaggregate revenue by market and geography. We believe that disaggregating revenue by market and geography provides the most relevant information regarding the nature, amount, timing, and uncertainty of revenues and cash flows. We do not present other levels of disaggregation, such as by type of products, customer, contracts, duration of contracts, timing of transfer of control and sales channels, as this information is not used by our chief operating decision maker (“CODM”) to manage the business.

Effective July 1, 2025, the Company aligned its reporting of revenues into two markets: (i) Datacenter & Communications, and (ii) Industrial. All prior period market and segment disclosure information has been reclassified to conform to the current reporting structure.

The following tables summarize disaggregated revenue by market ($000):



	Year Ended June 30,

Markets	2026		2025		2024
Datacenter & Communications	$	5,274,629	$	3,755,164	$	2,631,369
Industrial	1,843,552		2,054,951		2,076,319
Total Revenues	$	7,118,181	$	5,810,115	$	4,707,688

Contract Liabilities

Payments received from customers are based on invoices or billing schedules as established in contracts with customers. Contract liabilities generally relate to payments received in advance of performance under the contract. Contract liabilities are recognized as revenue when the performance obligations have been satisfied. During the year ended June 30, 2026, we recognized revenue of $51 million related to customer payments that were included as contract liabilities in the Consolidated Balance Sheet as of June 30, 2025. We had $63 million of contract liabilities recorded in the Consolidated Balance Sheet as of June 30, 2026. As of June 30, 2026, $48 million of contract liabilities is included within Other accrued liabilities, and $15 million is included within Other liabilities on the Consolidated Balance Sheet. As of June 30, 2025, $63 million of contract liabilities is included in Other accrued liabilities, and $9 million is included within Other liabilities on the Consolidated Balance Sheet.

- Definition

The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-7

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-9

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-10

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 15
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-15

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-12

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-12

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
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-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-12

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-12

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-12

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (b)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-13

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Topic 606
-Publisher FASB
-URI https://asc.fasb.org/606/tableOfContent

+ Details

Income Taxes - Schedule of Principal Items Comprising Deferred Assets and Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Jun. 30, 2025
Deferred income tax assets
Inventory capitalization	$ 74,414	$ 74,886
Non-deductible accruals	16,761	18,222
Accrued employee benefits	36,183	36,331
Net-operating loss and credit carryforwards	214,632	256,794
Share-based compensation expense	18,860	15,852
Other	9,225	9,564
R&D capitalization	215,663	168,998
Deferred revenue	12,194	15,376
ROU asset	64,962	37,785
Book over tax accumulated depreciation	6,321	0
Valuation allowances	(193,924)	(163,678)
Total deferred income tax assets	475,291	470,130
Deferred income tax liabilities
Tax over book accumulated depreciation	0	(14,038)
Intangible assets	(725,095)	(863,484)
Outside basis differences	(107,470)	(142,781)
ROU liability	(54,067)	(31,239)
Other	(22,203)	(9,515)
Total deferred income tax liabilities	(946,467)	(1,128,440)
Net deferred income taxes	(471,176)	(658,310)
Interest rate cap
Deferred income tax liabilities
Interest rate swap/cap	(659)	(4,000)
Tax on unremitted earnings
Deferred income tax liabilities
Interest rate swap/cap	$ (36,973)	$ (63,383)

Restructuring Plans

12 Months Ended

Jun. 30, 2026

Restructuring and Related Activities [Abstract]

Restructuring Plans

2023 Restructuring Plan

On May 23, 2023, the Board of Directors approved the 2023 Plan which includes site consolidations, facilities moves and closures, as well as the relocation and requalification of certain manufacturing facilities. These restructuring actions were intended to realign our cost structure as part of a transformation to a simpler, more streamlined, resilient and sustainable business model. We evaluate restructuring charges in accordance with ASC 420, Exit or Disposal Cost Obligations (“ASC 420”), and ASC 712, Compensation-Nonretirement Post-Employment Benefits (“ASC 712”).

In the year ended June 30, 2026, these activities resulted in net charges of $1 million, primarily for site move costs partially offset by adjustments to employee termination costs. In the year ended June 30, 2025, these activities resulted in $53 million of net charges primarily for impairment losses associated with the sale of our Newton Aycliffe business, impairment of ROU assets, employee termination costs, site move costs and accelerated depreciation. In fiscal 2024, these activities resulted in $27 million of charges primarily for acceleration of depreciation, write-off of property and equipment, and site move costs.

Activity and accrual balances for the 2023 Plan were as follows ($000):



	Severance		Asset Write-Offs		Other		Total Accrual
Balance - June 30, 2024	$	51,061	$	—	$	—	$	51,061
Restructuring charges	6,123		24,010		22,864		52,997


Payments	(12,954)		—		—		(12,954)
Asset write-offs and other	—		(24,010)		(22,864)		(46,874)
Balance - June 30, 2025	44,230		—		—		44,230
Restructuring charges (recoveries)	(11,349)		250		11,992		893


Payments	(5,336)		—		—		(5,336)
Asset write-offs and other	1,035		(250)		(11,992)		(11,207)
Balance - June 30, 2026	$	28,580	$	—	$	—	$	28,580

At June 30, 2026, $7 million and $22 million of accrued severance related costs were included in other accrued liabilities and other liabilities on our Consolidated Balance Sheet, respectively, and are expected to result in cash expenditures through fiscal 2028. The current and prior year severance related net charges are primarily comprised of accruals and adjustments for severance and pay for employees being terminated due to the consolidation of certain manufacturing sites, with severance recorded in accordance with ASC 712.

For the year ended June 30, 2026 restructuring costs were not material in any segment. For the year ended June 30, 2025, restructuring costs were primarily incurred in the Datacenter & Communications segment. Restructuring charges (recoveries) are recorded in Restructuring charges in our Consolidated Statements of Earnings (Loss).

2025 Restructuring Plan

Commencing in the quarter ended March 31, 2025, and as part of the ongoing strategic review of the Company’s business, the Company’s management approved the 2025 Plan. In connection therewith, the Company incurs charges for related severance and benefits, lease and contract termination costs, asset write-offs, facilities move and other restructuring costs. We evaluate restructuring charges in accordance with ASC 420 and ASC 712.

In the year ended June 30, 2026, these activities resulted in $62 million of net charges primarily related to write-off of property and equipment, employee termination and site closure costs. In the year ended June 30, 2025, these activities resulted in $107 million of net charges primarily for the write-off of property and equipment and ROU assets, employee and contract termination costs. We expect the restructuring actions to be substantially completed by the end of fiscal 2026. However, the actual timing and costs associated with these restructuring actions may differ from our current expectations and estimates and such differences may be material.

Activity and accrual balances for the 2025 Plan were as follows ($000):



	Severance		Asset Write-Offs		Other		Total Accrual
Balance - June 30, 2024	$	—	$	—	$	—	$	—
Restructuring charges	23,983		59,068		24,033		107,084
Payments	(7,261)		(48,574)		(4,136)		(59,971)
Asset write-offs and other	—		—		—		—
Balance - June 30, 2025	16,722		10,494		19,897		47,113
Restructuring charges	27,583		26,068		8,846		62,497
Payments	(20,652)		—		—		(20,652)
Asset write-offs and other	(1,122)		(26,788)		(16,512)		(44,422)
Balance - June 30, 2026	$	22,531	$	9,774	$	12,231	$	44,536

At June 30, 2026, $23 million of accrued severance related costs were included in other accrued liabilities and are expected to result in cash expenditures primarily through fiscal 2027. The current year severance related net charges are primarily comprised of accruals for severance and pay for employees being terminated due to the consolidation of certain manufacturing and distribution sites as well as workforce reductions, with severance recorded in accordance with ASC 712. At June 30, 2026, total liabilities for asset write-offs and other contract costs of $10 million and $12 million were included in other accrued liabilities and other liabilities, respectively, on our Consolidated Balance Sheet.

For the year ended June 30, 2026, restructuring charges were incurred primarily in the Industrial and Corporate segments. For the year ended June 30, 2025, restructuring charges were primarily incurred in the Industrial and Datacenter & Communications segments. Restructuring charges and recoveries are recorded in Restructuring charges in our Consolidated Statements of Earnings (Loss).

Goodwill and Other Intangible Assets - Schedule of Changes in Carrying Amount of Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025
Goodwill [Roll Forward]
Balance-beginning of period	$ 4,471,084	$ 4,464,329
Other reclassifications	24,493	(174,373)
Foreign currency translation	(119,980)	181,128
Balance-end of period	4,375,597	4,471,084
Datacenter & Communications
Goodwill [Roll Forward]
Balance-beginning of period	1,150,570	1,147,297
Other reclassifications	0	0
Foreign currency translation	(170)	3,273
Balance-end of period	1,150,400	1,150,570
Industrial
Goodwill [Roll Forward]
Balance-beginning of period	3,320,514	3,317,032
Other reclassifications	24,493	(174,373)
Foreign currency translation	(119,810)	177,855
Balance-end of period	$ 3,225,197	$ 3,320,514

- Definition

Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

+ References

+ Details

Revenue from Contracts with Customers (Tables)

12 Months Ended

Jun. 30, 2026

Revenue from Contract with Customer [Abstract]

Schedule of Disaggregated Revenue

The following tables summarize disaggregated revenue by market ($000):



	Year Ended June 30,

Markets	2026		2025		2024
Datacenter & Communications	$	5,274,629	$	3,755,164	$	2,631,369
Industrial	1,843,552		2,054,951		2,076,319
Total Revenues	$	7,118,181	$	5,810,115	$	4,707,688

Insider Trading Arrangements	3 Months Ended
Insider Trading Arrangements	Jun. 30, 2026
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

Employee Benefit Plans - Additional Information (Details) $ in Millions	12 Months Ended
	Jun. 30, 2026 USD ($) definedBenefitPlan	Jun. 30, 2025 USD ($)	Jun. 30, 2024 USD ($)
401(k) Profit Sharing Plan
Defined Benefit Plan Disclosure [Line Items]
Employer matching contribution, percent of employee contribution	50.00%
Employer matching contribution, percent of employees' earnings	8.00%
Employer matching contribution, net of forfeitures	$ 14	$ 15	$ 18
Contributions to profit sharing retirement plan	0	1	$ 2
Swiss Plan
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	6	5
Pension liability	22	25
Pension adjustment	1	(7)
Accumulated benefit obligation	$ 144	141
German Plan
Defined Benefit Plan Disclosure [Line Items]
Number of defined benefit plans \| definedBenefitPlan	1
Acquired Plans
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	$ 3	3
Pension liability	27	37
Pension adjustment	1	1
Accumulated benefit obligation	$ 37	$ 47

Goodwill and Other Intangible Assets - Additional Information (Details) $ in Thousands	12 Months Ended
	Jun. 30, 2026 USD ($) segment	Jun. 30, 2025 USD ($) segment	Jun. 30, 2024 USD ($)
Intangible Asset, Finite-Lived [Line Items]
Number of reporting segments \| segment	2	3
Depreciation	$ 280,000	$ 303,000	$ 288,000
Impairment charges	0	17,000	0
Goodwill	4,375,597	4,471,084	$ 4,464,329
Trade Names
Intangible Asset, Finite-Lived [Line Items]
Intangible Asset, Excluding Goodwill, Indefinite-Lived	$ 430,000
Networking
Intangible Asset, Finite-Lived [Line Items]
Goodwill		1,038,000
Materials
Intangible Asset, Finite-Lived [Line Items]
Goodwill		241,000
Lasers
Intangible Asset, Finite-Lived [Line Items]
Goodwill		3,191,000
Location, Statement of Income, Balance [Axis]: us-gaap:CostOfGoodsAndServicesSold
Intangible Asset, Finite-Lived [Line Items]
Impairment charges		$ 14,000
Intangible Asset, Finite-Lived, Impairment Loss, Statement of Income or Comprehensive Income [Extensible Enumeration]		Cost of goods sold
Location, Statement of Income, Balance [Axis]: us-gaap:ResearchAndDevelopmentExpense
Intangible Asset, Finite-Lived [Line Items]
Impairment charges		$ 3,000
Intangible Asset, Finite-Lived, Impairment Loss, Statement of Income or Comprehensive Income [Extensible Enumeration]		Research and development
Technology
Intangible Asset, Finite-Lived [Line Items]
Weighted-average remaining life of intangible assets	109 months
Customer Lists
Intangible Asset, Finite-Lived [Line Items]
Weighted-average remaining life of intangible assets	127 months
Minimum
Intangible Asset, Finite-Lived [Line Items]
Amortization period of intangible assets	1 year
Minimum \| Technology
Intangible Asset, Finite-Lived [Line Items]
Amortization period of intangible assets	60 months
Minimum \| Customer Lists
Intangible Asset, Finite-Lived [Line Items]
Amortization period of intangible assets	60 months
Maximum
Intangible Asset, Finite-Lived [Line Items]
Amortization period of intangible assets	20 years
Maximum \| Technology
Intangible Asset, Finite-Lived [Line Items]
Amortization period of intangible assets	240 months
Maximum \| Customer Lists
Intangible Asset, Finite-Lived [Line Items]
Amortization period of intangible assets	192 months

Equity and Redeemable Preferred Stock - Additional Information (Details) $ / shares in Units, $ in Thousands			1 Months Ended	3 Months Ended		12 Months Ended
	Mar. 02, 2026 USD ($) $ / shares shares	Jul. 01, 2022 USD ($) $ / shares shares	Mar. 31, 2021 USD ($) day $ / shares shares	Jun. 30, 2026 $ / shares shares	Dec. 31, 2025 $ / shares	Jun. 30, 2026 USD ($) shares	Jun. 30, 2025 USD ($) shares	Jun. 30, 2024 USD ($) shares	Jun. 30, 2023 shares
Class of Stock [Line Items]
Proceeds from issuance of common shares \| $						$ 1,998,552	$ 0	$ 0
Preferred stock, shares authorized (in shares)				5,000,000		5,000,000
Conversion of Series B preferred stock (in shares)						215,000
Redeemable convertible preferred stock shares outstanding (in shares)				0		0	215,000	215,000	215,000
Common Stock
Class of Stock [Line Items]
Conversion of Series A preferred stock (in shares)						30,100,000
Conversion of Series A preferred stock \| $						$ 2,500,000
Common Stock \| Private Placement
Class of Stock [Line Items]
Shares issued and sold (in shares)	7,788,161
Price per share of shares issued and sold (in usd per share) \| $ / shares	$ 256.80
Proceeds from issuance of common shares \| $	$ 2,000,000
Contractual lock-up period	6 months
Price protection period	6 months
Mandatory Convertible Preferred Stock
Class of Stock [Line Items]
Mandatory preferred convertible shares authorized (in shares)				2,300,000		2,300,000
Series B-1 Preferred Stock
Class of Stock [Line Items]
Conversion of Series B preferred stock (in shares)						75,000
Stock issued (in shares)			75,000
Equity per share price (in usd per share) \| $ / shares			$ 10,000
Series B-1 Preferred Stock \| Private Placement
Class of Stock [Line Items]
Proceeds from common stock and preferred stock options exercised in full \| $			$ 750,000
Series B-2 Preferred Stock
Class of Stock [Line Items]
Conversion of Series B preferred stock (in shares)						140,000
Stock issued (in shares)		140,000
Common stock equivalents
Class of Stock [Line Items]
Redeemable convertible preferred stock shares outstanding (in shares)				0		0
Equity per share price (in usd per share) \| $ / shares		$ 10,000
Debt instrument conversion, conversion price per share (in usd per share) \| $ / shares			$ 85
Common stock , conversion, if volume weighted average price, percentage exceeds applicable conversion price			150.00%
Debt instrument conversion, trading days \| day			20
Debt instrument conversion, consecutive trading days \| day			30
Preferred stock, accretion of redemption value, period			10 years
Dividends paid (in usd per share) \| $ / shares				$ 0	$ 0
Common stock equivalents \| Private Placement
Class of Stock [Line Items]
Proceeds from common stock and preferred stock options exercised in full \| $		$ 1,400,000

Nature of Business and Summary of Significant Accounting Policies	12 Months Ended
	Jun. 30, 2026
Accounting Policies [Abstract]
Nature of Business and Summary of Significant Accounting Policies	Nature of Business and Summary of Significant Accounting Policies Nature of Business. Coherent Corp. (“Coherent,” the “Company,” “we,” “us” or “our”) is a vertically integrated manufacturing company that develops, manufactures and markets lasers, transceivers, and other optical and optoelectronic devices, modules, and systems, as well as engineered materials, for use in data center and communications, as well as industrial applications, including precision manufacturing, energy, semiconductor & display capital equipment, and instrumentation. We generate nearly all of our revenues, earnings, and cash flows from developing, manufacturing, and marketing a wide range of products and services for our end markets. Coherent has broad technical expertise and a deep technology stack in areas of importance to our products, including materials growth and fabrication of specialty materials, lasers including semiconductor and high power lasers, passive optics including isolators, transceivers, transport equipment, high power lasers for semiconductor capital equipment, display manufacturing, precision manufacturing, consumer electronics, life sciences applications, and scientific research. Many of our products include custom integrated software that we develop internally, leveraging our deep domain expertise. The Company markets its products through its direct sales force and through distributors and agents. The Company uses certain uncommon materials and compounds to manufacture its products. Some of these materials are available from only one proven outside source. The continued high quality of these materials is critical to the stability of our manufacturing yields. Consolidation. The Consolidated Financial Statements include the accounts of the Company and all of its subsidiaries. All significant intercompany accounts and transactions have been eliminated in consolidation. Certain prior year amounts have been reclassified for consistency with the current year presentation. Use of Estimates. The preparation of financial statements in conformity with generally accepted accounting principles in the United States (“U.S. GAAP”) requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Although these estimates are based on management’s best knowledge of current events and actions Coherent may undertake in the future, actual results may ultimately differ from the estimates. Foreign Currency Translation. For all foreign subsidiaries whose functional currency is not the U.S. dollar, the functional currency is the local currency. Assets and liabilities of those operations are translated into U.S. dollars using period-end exchange rates while income and expenses are translated using the average exchange rates for the reporting period. Translation adjustments are recorded as Accumulated other comprehensive income (loss) within Shareholders’ equity in the accompanying Consolidated Balance Sheets. Cash, Cash Equivalents, and Restricted Cash. We consider highly liquid investment instruments with an original maturity of three months or less to be cash equivalents. As of June 30, 2026, we had restricted cash of $606 million that is restricted for a specific purpose, with $35 million and $571 million recorded in Restricted cash, current and Restricted cash, non-current, respectively, on our Consolidated Balance Sheet. Allowance for Expected Credit Losses. We recognize expected credit losses resulting from the inability of our customers to make required payments through an allowance account that is measured each reporting date. We estimate credit losses over the life of our trade accounts receivable using a combination of historical loss data, current credit conditions, specific customer circumstances, and reasonable and supportable forecasts of future economic conditions. Inventories. Inventories are valued at the lower of cost or net realizable value, with cost determined on the first-in, first-out basis. Inventory costs include material, labor and manufacturing overhead. In evaluating the net realizable value of inventory, management also considers other factors, including known trends and market conditions. We generally record a reduction to the carrying value of inventory as a charge against earnings for all products on hand more than 12 to 24 months, depending on the nature of the products, that have not been sold to customers or cannot be further manufactured for sale to alternative customers. An additional charge may be recorded for product on hand that is in excess of product sold to customers over the same periods noted above. Property, Plant and Equipment. Property, plant and equipment are carried at cost or fair value upon acquisition. Major improvements are capitalized, while maintenance and repairs are generally expensed as incurred. We review our property, plant and equipment and other long-lived assets for impairment whenever events or circumstances indicate that the carrying amounts may not be recoverable. Depreciation on property, plant and equipment and amortization on finance lease right-of-use assets for financial reporting purposes is computed primarily by the straight-line method over the estimated useful lives for building, building improvements and land improvements of 10 to 30 years and 3 to 20 years for machinery and equipment. Investment Credit. The CHIPS Act provides an Advanced Manufacturing Investment Credit (“AMIC”) under Section 48D for qualified investments in advanced manufacturing facilities. The Company expects to receive refundable federal tax credits related to certain expansion projects. Credits attributable to property, plant and equipment are recorded as reductions to the depreciable basis of the related assets, while credits attributable to capitalized SG&A costs are recorded as reductions to SG&A expense. The Company recorded reductions to property, plant, and equipment of $41 million and $39 million during fiscal 2025 and fiscal 2026, respectively, and recorded a reduction to SG&A expense of $21 million during fiscal 2026. Related receivables are based on management's interpretation of Section 48D and are refundable to the extent they exceed federal income tax liabilities. They are recorded within prepaid and refundable income taxes in the Consolidated Balance Sheet. Leases. Leases are recognized under Accounting Standards Codification 842, Leases. The Company determines whether a contract contains a lease at contract inception. A contract contains a lease if there is an identified asset and the Company has the right to control the asset. Operating lease right-of-use (“ROU”) assets represent our right to use an underlying asset for the lease term, and lease liabilities represent our obligation to make lease payments arising from the lease. Operating lease ROU assets and lease liabilities are recognized at commencement date based on the present value of lease payments over the lease term. We use the incremental borrowing rate in determining the present value of lease payments, unless the implicit rate is readily determinable. If lease terms include options to extend or terminate the lease, the ROU asset and lease liability are measured based on the reasonably certain decision. We have lease agreements with lease and non-lease components, which are accounted for as a single lease component for all classes of leased assets for which the Company is the lessee. Additionally, for certain equipment leases, the portfolio approach is applied to account for the operating lease ROU assets and lease liabilities. In the Consolidated Statements of Earnings (Loss), lease expense for operating lease payments is recognized on a straight-line basis over the lease term. For finance leases, interest expense is recognized on the lease liability and the ROU asset is amortized over the lease term. Some leasing arrangements require variable payments that are dependent upon usage or output, or may vary for other reasons, such as insurance or tax payments. Variable lease payments are recognized as incurred, and are not presented as part of the ROU asset or lease liability. See Note 9. Leases for further information. Business Combinations. The Company accounts for business combinations by establishing the acquisition-date fair value as the measurement for all assets acquired and liabilities assumed. Certain provisions of U.S. GAAP prescribe, among other things, the determination of acquisition-date fair value of consideration paid in a business combination (including contingent consideration) and the exclusion of transaction and acquisition-related restructuring costs from acquisition accounting. Goodwill. The excess purchase price over the fair value allocated to identifiable tangible and intangible net assets of businesses acquired is reported as goodwill in the accompanying Consolidated Balance Sheets. We test goodwill for impairment at least annually as of April 1, or whenever events or changes in circumstances indicate that goodwill might be impaired. The assessment requires significant judgment regarding future operating performance, including projections of revenues, profitability and cash flows, as well as assumptions regarding market conditions and discount rates. Goodwill impairment is measured as the amount by which a reporting unit’s carrying value exceeds its fair value, not to exceed the carrying amount of goodwill. As of April 1 of fiscal years 2026 and 2025, we completed our annual impairment tests of our reporting units using the quantitative assessment. For fiscal year 2026, the fair values of the reporting units were determined using a discounted cash flow analysis with projected financial information based on our most recently completed long-term strategic planning processes and also considered the current financial performance compared to our prior projections of the reporting units, as well as a market analysis. As of April 1, 2026, the fair value of each of our reporting units, except for Lasers, exceeded their carrying values with significant headroom. As of April 1, 2025, the fair value of each of our reporting units exceeded their carrying values with significant headroom. For the Lasers reporting unit, as of April 1, 2026, based on the quantitative assessment, the estimated fair value exceeded the carrying value by approximately 8%. Accordingly, we concluded that goodwill was not impaired; however, the reporting unit remains sensitive to changes in assumptions and future operating performance. Our Lasers reporting unit has goodwill of approximately $3.1 billion at June 30, 2026. In evaluating the Lasers reporting unit, significant weight was provided to the forecasted revenue and related gross margins as we determined that these have the most significant impact on its fair value. The forecasted profitability is expected to increase as volumes increase and the achievement of operating efficiencies and the benefit from the multi-year synergy and site consolidation plans are realized. The valuation utilized a discount rate of 11.0%, representing the rate of return a market participant would require for an investment in the reporting unit. If actual results differ materially from management’s estimates and assumptions, a material goodwill impairment charge could occur in future periods. Due to the cyclical nature of our business, and the other factors described in the section on Risk Factors set forth in Item 1A of this Annual Report on Form 10-K, the profitability of our individual reporting units may periodically be affected by downturns in customer demand, operational challenges and other factors. If material adverse conditions occur that impact one or more of our reporting units, our determination of future fair value might not support the carrying amount of one or more of our reporting units, and the related goodwill would need to be impaired. Intangibles. Intangible assets are initially recorded at their cost or fair value upon acquisition. Finite-lived intangible assets are amortized using the straight-line method over the estimated useful lives of the assets ranging from 1 to 20 years. Indefinite-lived intangible assets are not amortized but tested annually for impairment at April 1, or when events or changes in circumstances indicate that indefinite-lived intangible assets might be impaired. As of April 1 of fiscal 2026, the Company completed a quantitative impairment test of the Coherent trade name acquired in the acquisition of Coherent, Inc. (“Merger”) using the relief from royalty method and determined that its fair value is well in excess of its carrying value. Series B Convertible Preferred Stock. The Series B-1 and B-2 Convertible Preferred Stock was initially measured at fair value less issuance costs, accreted to its redemption value over a ten-year period (using the effective interest method) with such accretion accounted for as deemed dividends and reductions to Net Earnings (Loss) Available to the Common Shareholders. All outstanding shares of Series B-1 and Series B-2 Preferred Stock were converted to Company Common Stock in the second quarter of fiscal 2026, and no shares of Preferred Stock are currently issued and outstanding. See Note 14. Equity and Redeemable Preferred Stock for further information. Noncontrolling Interests. The Company accounts for noncontrolling interests in accordance with ASC Topic 810-10-45, which requires the Company to present noncontrolling interests as a separate component of total shareholders’ equity on the Consolidated Balance Sheets and the consolidated net earnings (loss) attributable to its noncontrolling interests be clearly identified and presented on the face of the Consolidated Statements of Earnings (Loss) and Consolidated Statements of Comprehensive Income (Loss). See Note 15. Noncontrolling Interests for further information on the noncontrolling interests in our Silicon Carbide LLC subsidiary. Commitments and Contingencies. Liabilities for loss contingencies arising from claims, assessments, litigation, fines, penalties and other sources are recorded when it is probable that a liability has been incurred and the amount of the assessment and/or remediation can be reasonably estimated. If a loss is not both probable and reasonably estimable, or if an exposure to a loss exists in excess of the amount accrued, the Company assesses whether there is at least a reasonable possibility that a loss, or additional loss, may have been incurred. If there is a reasonable possibility that a loss, or additional loss, may have been incurred, the Company discloses the estimate of the possible loss or range of loss if it is material and an estimate can be made, or discloses that such an estimate cannot be made. The determination as to whether a loss can reasonably be considered to be possible or probable is based on management's assessment, together with legal counsel, regarding the ultimate outcome of the matter. Legal costs incurred in connection with loss contingencies are expensed as incurred. Such liabilities are adjusted as further information develops or circumstances change. Our customers may discover defects in our products after the products have been fully deployed and operated under peak stress conditions. If we are unable to correct defects or other problems, we could experience, among other things, loss of customers, increased costs of product returns and warranty expenses, damage to our brand reputation, failure to attract new customers or achieve market acceptance, diversion of development and engineering resources, or legal action by our customers. We had no material loss contingency liabilities at June 30, 2026 or 2025 related to commitments and contingencies. Supply Chain Financing Arrangements. The Company has entered into supply chain financing arrangements with third-party financial institutions to provide its vendors with enhanced payment options while providing the Company with added working capital flexibility. The Company does not provide any guarantees under these arrangements, does not have an economic interest in its suppliers’ voluntary participation, does not receive an economic benefit from the financial institutions, and no assets are pledged under the arrangements. The arrangements do not change the payable terms negotiated by the Company and our vendors and does not result in a change in the classification of amounts due as accounts payable in the Consolidated Balance Sheets. Suppliers utilized the program to accelerate receipt of payment from these financial institutions for $27 million and $18 million of the Company's outstanding Accounts payable as of June 30, 2026 and 2025, respectively. Total supplier invoices paid by the financial institutions amounted to $104 million and $76 million for the years ended June 30, 2026 and 2025, respectively. The supplier invoices included under the program require payment in full to the financial institutions consistent with the Company’s normal terms and conditions as agreed upon with the vendor. Income Taxes. Deferred income tax assets and liabilities are determined based on the differences between the Consolidated Financial Statements and tax basis of assets and liabilities using enacted tax rates in effect in the years in which the differences are expected to reverse. Valuation allowances are established when necessary to reduce deferred income tax assets to the amount more likely than not to be realized. The Company’s accounting policy is to apply acquired deferred tax liabilities to pre-existing deferred tax assets before evaluating the need for a valuation allowance for acquired deferred tax assets. The Company recognizes the tax benefit from an uncertain tax position only if it is more likely than not that the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position. The tax benefits recognized in the financial statements from such a position are measured based on the largest benefit that has a greater than 50% likelihood of being realized upon ultimate resolution. The amount of unrecognized tax benefits is adjusted for changes in facts and circumstances. For example, adjustments could result from significant amendments to existing tax law and the issuance of regulations or interpretations by the taxing authorities, new information obtained during a tax examination, or resolution of an examination. The Company believes that its estimates for uncertain tax positions are appropriate and sufficient to pay assessments that may result from examinations of its tax returns. The Company recognizes both accrued interest and penalties related to unrecognized tax benefits in income tax expense. The Company uses a portfolio approach to release the income tax effects in AOCI related to interest rate instruments and pension and postretirement benefits. Under this approach, the income tax effects are released from AOCI based on the pre-tax adjustments to interest rate instruments and pension liabilities or assets recognized within other comprehensive income (loss). Any tax effects remaining in AOCI are released only when the entire portfolio of the interest rate instruments or pension and postretirement benefits is liquidated, sold or extinguished. Revenue Recognition. Revenue is recognized under Accounting Standards Codification 606, Revenue from Contracts with Customers (ASC 606), when or as obligations under the terms of a contract with our customer have been satisfied and control has transferred to the customer. We have elected the practical expedient to exclude all sales and use taxes from the measurement of the transaction price. In certain customer arrangements, we are contractually entitled to reimbursement for import tariffs incurred on product shipments, the increase in consideration received due to tariff surcharges would not meet the sales and use tax practical expedient. As such, revenue including the tariff surcharge, and related tariff expense, would be recorded gross in the income statement. These reimbursements are considered part of the transaction price under ASC 606 and are recognized as revenue on a gross basis. The corresponding tariff costs are recorded in cost of goods sold. For contracts with commercial customers, which comprise the majority of our performance obligations, ownership of the goods and associated revenue are generally transferred to customers at a point in time, generally upon shipment of a product to the customer or delivery of the product to the customer and without significant judgments. The majority of contracts typically require payment within 30 to 90 days after transfer of ownership to the customer. We periodically enter into contracts in which a customer may purchase a combination of goods and/or services, such as products with maintenance contracts or extended warranty. Maintenance contracts and extended warranties are typically sold separately from products, and represent a distinct performance obligation. Revenue related to the performance obligation for maintenance contracts and extended warranties is recognized over time as the customer simultaneously receives and consumes the benefits provided by us. Service revenue includes repairs, tolling arrangements and installation. Repairs, tolling and installation activities are usually completed in a short period of time (normally less than one month) and therefore recorded at a point in time when the services are completed. The majority of contracts typically require payment within 30 to 90 days after performance of the service. Non-recurring engineering arrangements are typically recognized as product revenue over time under either the time and material practical expedient, as the entity has a right to consideration from a customer, in an amount that corresponds directly with the value to the customer of the entity’s performance completed to date, or under the output and input method. The majority of contracts typically require payment within 30 to 90 days. Our revenue recognition policy is consistently applied across our segments, product lines, services, and geographical locations. For the periods covered herein, we measure revenue based on the amount of consideration the Company expects to be entitled to in exchange for products or services, reduced by the amount of variable consideration related to products expected to be returned. We determine variable consideration, which primarily consists of product returns and distributor sales price reductions resulting from price protection agreements, by estimating the impact of such reductions based on historical analysis of such activity. Under ASC 606, we expense sales commissions when incurred because the amortization period would have been one year or less. These costs are recorded within selling, general and administrative expenses (“SG&A”). We offer an assurance-type limited warranty that products will be free from defects in materials and workmanship. We establish an accrual for estimated warranty expenses at the time revenue is recognized. The warranty is typically one year, although it can be longer periods for certain products, and is typically limited to either (1) the replacement or repair of the product or (2) a credit against future purchases. We believe that disaggregating revenue by end market provides the most relevant information regarding the nature, amount, timing, and uncertainty of revenues and cash flows. See Note 3. Revenue from Contracts with Customers for further information. Tariff Refund Receivable In early 2025, the United States implemented significant new tariffs and export restrictions affecting a broad range of countries, commodities and industries. These actions have prompted retaliatory measures from certain foreign governments, including the imposition of tariffs and export controls. On February 20, 2026, the U.S. Supreme Court ruled that tariffs imposed under the International Emergency Economic Powers Act (“IEEPA”) were not authorized by the statute. The Company is the importer of record for certain raw materials and products that were previously subject to such tariffs under IEEPA. During the fourth quarter of fiscal 2026, following the orders of the U.S. Court of International Trade directing U.S. Customs and Border Protection to refund such duties, the Company concluded that recovery of a portion of previously paid tariffs was probable. As a result, the Company recorded the receipt of tariff refunds received and recognized a net receivable for additional refunds expected to be recovered. The amounts recorded were not material to the Company. The receivable represents the Company’s estimate of recoverable tariffs associated with eligible import entries based on information available as of June 30, 2026, including shipment‑level data and applicable court rulings guidance. The timing of collection remains subject to U.S. Customs and Border Protection’s administrative processes, and actual amounts ultimately received may differ from estimates as refund claims are reviewed and validated. Research and Development. R&D expenses include salaries, contractor and consultant fees, supplies and materials, as well as costs related to other overhead such as depreciation, facilities, utilities and other departmental expenses. The costs we incur with respect to internally developed technology, including allocations of our wafer fabrication and other manufacturing facilities and resources utilized to support R&D programs, are included in R&D expenses as incurred. Restructuring. The Company records charges associated with approved restructuring plans to reorganize operations, to remove redundant headcount and infrastructure associated with site consolidations, facilities moves and closures, as well as the relocation and requalification of certain manufacturing facilities. Restructuring charges can include severance costs to eliminate a specific number of positions, infrastructure charges to vacate facilities and consolidate operations and contract cancellation costs. The Company records restructuring charges when they are probable and estimable. The Company evaluates restructuring charges in accordance with ASC 420, Exit or Disposal Cost Obligations, and ASC 712, Compensation-Nonretirement Post-Employment Benefits (ASC 712). See Note 12. Restructuring Plans for further information. Assets Held-for-Sale. Assets and liabilities are classified as held-for-sale when management approves and commits to a formal plan to actively market the assets for sale at a price reasonable in relation to their estimated fair value, the assets are available for immediate sale in their present condition, an active program to locate a buyer and other actions required to complete the sale have been initiated, the sale of the assets is probable and expected to be completed within one year, and it is unlikely that significant changes will be made to the plan. These conditions are usually met from the date on which a letter of intent or agreement to sell is ready for signing. Assets held-for-sale are reported at the lower of carrying amount or fair value less costs to sell. Long-lived assets classified as held-for-sale are not subject to depreciation or amortization. The held-for-sale designation and carrying value of assets held-for-sale are periodically reviewed and adjusted as facts and circumstances indicate that a change may be necessary. See Note 7. Assets Held-for-Sale and Sale of Businesses for further information. Share-Based Compensation. Share-based compensation arrangements require the recognition in net earnings (loss) of the grant date fair value of share-based compensation (for equity-classified awards). We recognize the share-based compensation expense over the requisite service period of the individual grantees, which generally equals the vesting period, net of forfeitures. The estimated annualized forfeitures are based on our historical experience of pre-vesting cancellations. We will record additional expense in future periods if the actual forfeiture rate is lower than estimated, and will adjust expense in future periods if the actual forfeitures are higher than estimated. See Note 17. Share-Based Compensation for a description of our share-based compensation plans and the assumptions we use to calculate the fair value of share-based compensation. Earnings per Share. Basic earnings (loss) per share is computed by dividing net earnings (loss) available to the common shareholders by the weighted-average number of shares of common stock outstanding during the period. Diluted earnings (loss) per share is computed by dividing the diluted earnings (loss) available to the common shareholders by the weighted-average number of shares of common stock and potentially dilutive shares of common stock outstanding during the period. If there is a net loss for the period, diluted earnings per share is the same as basic earnings per share. See Note 19. Earnings Per Share for further information. Accumulated Other Comprehensive Income (Loss) (“AOCI”). AOCI is a measure of all changes in shareholders’ equity that result from transactions and other economic events in the period other than transactions with owners. AOCI is a component of shareholders’ equity and consists of accumulated foreign currency translation adjustments, changes in the fair value of interest rate derivative instruments, and pension adjustments. Fair Value Measurements. We apply fair value accounting for all financial assets and liabilities that are required to be recognized or disclosed at fair value in the Consolidated Financial Statements. Fair value is defined as the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. When determining the fair value measurements for assets and liabilities, we consider the principal or most advantageous market in which we would transact, and the market-based risk measurements or assumptions that market participants would use in pricing the asset or liability, such as inherent risk, transfer restrictions and credit risk.

Consolidated Statements of Comprehensive Income (Loss) (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
Statement of Comprehensive Income [Abstract]
Change in fair value of interest rate instruments, taxes	$ (3,126)	$ (5,406)	$ (5,468)
Pension adjustment, taxes	$ 0	$ (1,543)	$ (1,718)

Income Taxes - Schedule of Components of Earnings (Losses) Before Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
Income Tax Disclosure [Abstract]
U.S. loss	$ (84,745)	$ (445,586)	$ (540,048)
Non-U.S. income	932,478	539,767	392,401
Earnings (Loss) Before Income Taxes	$ 847,733	$ 94,181	$ (147,647)

- Definition

Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

+ References

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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 4: http://www.xbrl.org/2003/role/exampleRef
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Reference 7: http://www.xbrl.org/2003/role/exampleRef
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Reference 8: http://www.xbrl.org/2003/role/disclosureRef
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Reference 9: http://www.xbrl.org/2003/role/disclosureRef
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Reference 10: http://www.xbrl.org/2003/role/exampleRef
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Reference 11: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 12: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 13: http://www.xbrl.org/2003/role/disclosureRef
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Reference 14: http://www.xbrl.org/2003/role/exampleRef
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Reference 15: http://fasb.org/us-gaap/role/ref/legacyRef
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+ Details

Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
Statement of Comprehensive Income [Abstract]
Net Earnings (Loss)	$ 786,884	$ 30,057	$ (158,764)
Other Comprehensive Income (Loss):
Foreign currency translation adjustments	(159,065)	409,069	(81,889)
Change in fair value of interest rate instruments, net of taxes	(11,414)	(31,898)	(20,196)
Pension adjustment, net of taxes	1,865	(6,351)	(7,443)
Net current-period other comprehensive income (loss)	(168,614)	370,820	(109,528)
Comprehensive Income (Loss)	618,270	400,877	(268,292)
Comprehensive Loss Attributable to Noncontrolling Interests	(18,114)	(19,307)	(2,610)
Foreign Currency Translation Adjustments Attributable to Noncontrolling Interests	(689)	1,423	429
Comprehensive Income (Loss) Attributable to Coherent Corp.	$ 637,073	$ 418,761	$ (266,111)

Leases - Schedule of Lease Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
Finance lease cost
Amortization of right-of-use assets	$ 0	$ 1,528	$ 1,667
Interest on lease liabilities	845	947	1,040
Total finance lease cost	845	2,475	2,707
Operating lease cost	64,035	59,213	52,909
Sublease income	(1,373)	0	0
Total lease cost	63,507	61,688	55,616
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from finance leases	845	947	1,040
Operating cash flows from operating leases	$ 62,996	58,117	50,672
Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration]	Other liabilities
Financing cash flows from finance leases	$ 1,926	1,749	1,584
Assets obtained in exchange for lease liabilities
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 135,996	$ 51,357	$ 64,385
Weighted-average remaining lease term (in years)
Finance leases	5 years 6 months	6 years 6 months	7 years 6 months
Operating leases	5 years 9 months 18 days	6 years 2 months 12 days	6 years 7 months 6 days
Weighted-average discount rate
Finance leases	5.60%	5.60%	5.60%
Operating leases	6.10%	6.90%	6.80%

Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2026	Jun. 30, 2025
Current Assets
Cash and cash equivalents	$ 1,162,018	$ 909,200
Restricted cash, current	35,156	8,897
Short-term investments	825,000	0
Accounts receivable - less allowance for doubtful accounts	1,343,278	964,051
Inventories	2,581,043	1,437,636
Prepaid and refundable income taxes	78,892	55,773
Prepaid and other current assets	900,112	551,597
Total Current Assets	6,925,499	3,927,154
Property, plant & equipment, net	2,999,343	1,877,507
Goodwill	4,375,597	4,471,084
Other intangible assets, net	2,884,474	3,204,747
Deferred income taxes	69,434	53,407
Restricted cash, non-current	571,222	714,816
Other assets	474,283	662,221
Total Assets	18,299,852	14,910,936
Current Liabilities
Current portion of long-term debt	7,916	188,306
Accounts payable	1,905,357	846,984
Accrued compensation and benefits	358,047	258,650
Operating lease current liabilities	61,371	41,575
Accrued income taxes payable	173,248	123,762
Other accrued liabilities	347,990	335,564
Total Current Liabilities	2,853,929	1,794,841
Long-term debt	3,214,308	3,498,615
Deferred income taxes	540,610	711,717
Operating lease liabilities	254,839	165,162
Other liabilities	197,966	259,318
Total Liabilities	7,061,652	6,429,653
Mezzanine Equity
Series B redeemable convertible preferred stock, no par value, 5% cumulative; authorized -	0	2,483,261
Shareholders' Equity
Common stock, no par value; authorized - 300,000,000 shares;	9,790,596	5,056,168
Accumulated other comprehensive income (AOCI)	204,112	372,037
Retained earnings	1,354,270	584,374
Total Shareholders' Equity	11,348,978	6,012,579
Treasury stock, at cost;	(445,483)	(368,065)
Total Coherent Corp. Shareholders' Equity	10,903,495	5,644,514
Noncontrolling interests (NCI)	334,705	353,508
Total Equity	11,238,200	5,998,022
Total Liabilities, Mezzanine Equity and Shareholders' Equity	$ 18,299,852	$ 14,910,936

Income Taxes

12 Months Ended

Jun. 30, 2026

Income Tax Disclosure [Abstract]

Income Taxes

Note 18. Income Taxes

The components of earnings (loss) before income taxes by jurisdiction were as follows ($000):



Year Ended June 30,	2026		2025		2024
U.S. loss	$	(84,745)	$	(445,586)	$	(540,048)
Non-U.S. income	932,478		539,767		392,401
Earnings (loss) before income taxes	$	847,733	$	94,181	$	(147,647)

The components of the income tax expense (benefit) were as follows ($000):



Year Ended June 30,	2026		2025		2024
Current:
Federal	$	3,366	$	3,010	$	10,119
State	4,903		1,733		181
Foreign	251,313		154,815		103,640
Total Current	259,582		159,558		113,940
Deferred:
Federal	(54,967)		(50,454)		(68,955)
State	(1,633)		(7,217)		(186)
Foreign	(142,133)		(37,763)		(33,682)
Total Deferred	(198,733)		(95,434)		(102,823)
Total Income Tax Expense	$	60,849	$	64,124	$	11,117

Principal items comprising deferred tax assets and liabilities were as follows ($000):



June 30,	2026		2025
Deferred income tax assets
Inventory capitalization	$	74,414	$	74,886

Non-deductible accruals	16,761		18,222
Accrued employee benefits	36,183		36,331
Net-operating loss and credit carryforwards	214,632		256,794
Share-based compensation expense	18,860		15,852
Other	9,225		9,564
R&D capitalization	215,663		168,998
Deferred revenue	12,194		15,376
ROU asset	64,962		37,785
Book over tax accumulated depreciation	6,321		—
Valuation allowances	(193,924)		(163,678)
Total deferred income tax assets	475,291		470,130
Deferred income tax liabilities
Tax over book accumulated depreciation	—		(14,038)
Intangible assets	(725,095)		(863,484)

Interest rate cap	(659)		(4,000)
Tax on unremitted earnings	(36,973)		(63,383)
Outside basis differences	(107,470)		(142,781)
ROU liability	(54,067)		(31,239)
Other	(22,203)		(9,515)
Total deferred income tax liabilities	(946,467)		(1,128,440)
Net deferred income taxes	$	(471,176)	$	(658,310)

The reconciliation of income tax expense at the statutory U.S. federal rate to the reported income tax expense (benefit) in accordance with the guidance in ASU 2023-09 is as follows ($000):


Year Ended June 30,	2026		%
US Federal Statutory Tax Rate	$	178,024	21
State and local income taxes, net of federal income tax effect (1)	1,694		—
Foreign tax effects
China:
Research and development tax credit	(13,245)		(2)
Tax on foreign unremitted earnings	(19,373)		(2)
Withholding taxes	11,206		1
Other	(1,996)		—
Germany:
State and local income taxes	(11,029)		(1)
Loss on sale of shares	(16,142)		(2)
Enacted changes in tax laws or rates	(47,451)		(6)
Other	4,312		1
Hong Kong:
Gain on sale of shares	(11,242)		(1)
Other	(526)		—
Korea, Republic of (South):
Withholding taxes	9,561		1
Other	(5,082)		(1)
Switzerland:
Statutory tax rate difference between Switzerland and United States	(13,938)		(2)
State and local income taxes	9,652		1
Qualified domestic minimum top-up tax	8,939		1
Other	4,039		1
Other foreign jurisdictions	11,186		1
Effect of cross-border tax laws:
Global intangible low-taxed income	16,837		2
Other	1,717		—
Tax credits
Research and development tax credits	(16,326)		(2)
Changes in valuation allowances	37,883		5
Nontaxable or nondeductible items
Share-based payment awards	(18,949)		(2)
Other	8,244		1
Changes in unrecognized tax benefits	(62,799)		(7)
Other	(4,347)		(1)
	$	60,849	7

(1) State taxes in California, Kentucky, and Indiana made up the majority (greater than 50 percent) of the tax effect in this category.



Year Ended June 30,	2025		%	2024		%
Taxes at statutory rate	$	19,778	21	$	(31,006)	21
Increase (decrease) in taxes resulting from:
State income taxes-net of federal benefit	(4,265)		(5)	(22)		—
Taxes on non U.S. earnings	3,632		4	16,601		(11)
Valuation allowance	20,295		22	43,866		(30)
U.S. branch income	(1,216)		(1)	3,226		(2)
Noncontrolling interest	4,284		4	1,002		(1)
Research and manufacturing incentive deductions and credits	(26,396)		(28)	(41,387)		28
Stock compensation	2,153		2	13,294		(9)

GILTI and FDII	13,631		15	(629)		—
Uncertain tax positions	6,814		7	3,301		(2)
Notional interest	(10,174)		(11)	(2,521)		2
Assets held-for-sale	36,895		39	—		—

Other	(1,307)		(1)	5,392		(4)
	$	64,124	68	$	11,117	(8)

The net income taxes paid (net of refunds received) by jurisdiction is as follows ($000):


June 30,	2026
Federal	$	14,882
State	3,274
Foreign
China	66,107
Germany	28,368
Switzerland	24,894
Sweden	15,977
Korea, Republic of (South)	13,656
Malaysia	11,314
Other	29,657
	$	208,129

On July 4, 2025, the One Big Beautiful Bill Act (“OBBBA”) was enacted in the United States. OBBBA includes provisions affecting various aspects of domestic and international taxation applicable to U.S. multinational corporations. The Company has evaluated the provisions effective for fiscal year 2026 and reflected the applicable impacts in its fiscal 2026 income tax provision. Certain provisions of OBBBA become effective in future years and the Company will continue to assess the impact of the legislation on future reporting periods.

The Company is partially permanently reinvested and will repatriate earnings for all non-U.S. subsidiaries with cash in excess of working capital needs. Such distributions could potentially be subject to U.S. state tax in certain states and foreign withholding taxes. Foreign currency gains (losses) related to the translation of previously taxed earnings from functional currency to U.S. dollars could also be subject to U.S. tax when distributed. The Company has estimated the associated withholding tax to be $37 million.

Additionally, the Company made a final accounting policy election to treat taxes due from future inclusions in U.S. taxable income related to global intangible low tax income (“GILTI”) as a current period expense when incurred.

During the fiscal years ended June 30, 2026, 2025, and 2024, cash paid by the Company for income taxes was $208 million, $167 million, and $97 million, respectively.

Our foreign subsidiaries in various tax jurisdictions operate under tax holiday arrangements. The impact of the tax holidays on our effective rate is a reduction in the rate of 0.9%, 11.6% and 5.6% for the fiscal years ended June 30, 2026, 2025 and 2024, respectively, and the impact of the tax holidays on diluted earnings per share is $0.04, $0.06, and $0.05 for the fiscal years ended June 30, 2026, 2025, and 2024, respectively. The tax holiday related to Coherent Malaysia Sdn. Bhd. expired for certain business lines during the fiscal year ended June 30, 2026, and will expire for other business lines on July 31, 2028. The tax holiday related to certain business lines of II-VI Laser Enterprise Philippines, Inc. expired during the fiscal year ended June 30, 2026, while the tax holiday for other business lines will expire in December 2027. The 100% tax holiday related to Silicon Carbide Vietnam Limited Liability Company expired during the fiscal year ended June 30, 2026; however, a 50% tax holiday remains in effect through June 30, 2030. Similarly, the tax holiday related to certain business lines of Coherent Vietnam (Dong Nai) Company Limited expired during the fiscal year ended June 30, 2026; however, a 50% tax holiday remains in effect through June 30, 2030. In addition, the tax holiday related to certain business lines of Coherent Singapore Pte. Ltd. expired during the fiscal year ended June 30, 2026.

The Company has the following gross operating loss carryforwards and tax credit carryforwards as of June 30, 2026 ($000):

Type

Amount

Expiration Date

Tax credit carryforwards:

Federal research and development credits

102,973

June 2037-June 2045

Foreign tax credits

13,224

June 2030-June 2036

State tax credits

13,354

June 2026-June 2040

State tax credits (indefinite)

82,435

Indefinite

Operating loss carryforwards:

Loss carryforwards - federal

26,712

June 2027-June 2036

Loss carryforwards - federal (indefinite)

1,539

Indefinite

Loss carryforwards - state

350,496

June 2027-June 2046

Loss carryforwards - state (indefinite)

72,869

Indefinite

Loss carryforwards - foreign

15,715

June 2027-June 2041

Loss carryforwards - foreign (indefinite)

32,883

Indefinite

The Company has recorded a valuation allowance against the majority of the foreign and state loss and credit carryforwards, certain U.S. credit carryforwards and the majority of state credit carryforwards. The Company’s U.S. federal loss carryforwards, federal research and development credit carryforwards, foreign tax credits, and certain state tax credits resulting from the Company’s acquisitions are subject to various annual limitations under Section 382 of the U.S. Internal Revenue Code.

Changes in the liability for unrecognized tax benefits for the fiscal years ended June 30, 2026, 2025 and 2024 were as follows ($000):



Year Ended June 30,	2026		2025		2024
Beginning balance	$	124,008	$	116,697	$	115,180
Increases in current year tax positions	6,800		9,660		5,168




Settlements	—		—		(2,970)
Expiration of statute of limitations	(67,049)		(2,349)		(681)
Ending balance	$	63,759	$	124,008	$	116,697

The Company classifies all estimated and actual interest and penalties as income tax expense. During fiscal years 2026, 2025 and 2024, there was $(4.1) million, $2.0 million and $2.3 million of interest and penalties expense (benefit) within income tax expense, respectively. The Company had $5 million, $9 million and $7 million of interest and penalties accrued at June 30, 2026, 2025 and 2024, respectively. The Company has classified the uncertain tax positions as non-current income tax liabilities, as the amounts are not expected to be paid within one year. The majority of the liability can be offset by credit carryforwards and would not impact cash taxes. Including tax positions for which the Company determined that the tax position would not meet the more likely than not recognition threshold upon examination by the tax authorities based upon the technical merits of the position, the total estimated unrecognized tax benefit that, if recognized, would affect our effective tax rate, was approximately $8 million, $20 million and $19 million at June 30, 2026, 2025 and 2024, respectively. For the years ended June 30, 2026, June 30, 2025, and June 30, 2024, due to the U.S. valuation allowance, a large portion of our unrecognized tax benefit will no longer impact the tax rate if recognized. The Company expects a decrease of $3 million of unrecognized tax benefits during the next 12 months due to the expiration of statutes of limitation.

Fiscal years 2023 to 2026 remain open to examination by the Internal Revenue Service, fiscal years 2022 to 2026 remain open to examination by certain state jurisdictions, and fiscal years 2012 to 2026 remain open to examination by certain foreign taxing jurisdictions. The Company is currently under examination by the Internal Revenue Service for the fiscal year ended June 30, 2024; New York City for the years ended June 30, 2023 through June 30, 2024; New York for the years ended June 30, 2023 through June 30, 2024; Massachusetts for the year ended June 30, 2023; for certain subsidiary companies in Vietnam for the years ended June 30, 2017 through June 30, 2020; Singapore for the year ended June 30, 2023; United Kingdom for the years ended June 30, 2022 through June 30, 2023; and Germany for the years ended September 30, 2012 through June 30, 2021. The Company believes its income tax reserves for these tax matters are adequate.

- Definition

The entire disclosure for income tax.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 740
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
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-URI https://asc.fasb.org/1943274/2147477617/942-740-50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480738/235-10-S50-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
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-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478822/944-740-50-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-12

Reference 5: http://www.xbrl.org/2003/role/exampleRef
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-Section 55
-Paragraph 231
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482663/740-10-55-231

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12C
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-12C

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-12B

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
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-SubTopic 270
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477891/740-270-50-1

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 6.I.5.Q1)
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Reference 10: http://www.xbrl.org/2003/role/disclosureRef
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-SubTopic 20
-Name Accounting Standards Codification
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480990/946-20-50-13

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(h)(2))
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-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/740/tableOfContent

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 14
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-14

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 21
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-21

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 17
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-17

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
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-Paragraph 2
-Subparagraph (SAB Topic 11.C)
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Reference 17: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482603/740-30-50-2

+ Details

Accumulated Other Comprehensive Income (Loss)

12 Months Ended

Jun. 30, 2026

Equity [Abstract]

Accumulated Other Comprehensive Income (Loss)

Note 16. Accumulated Other Comprehensive Income (Loss)

The changes in AOCI by component, net of tax, for the years ended June 30, 2026, 2025, and 2024 were as follows ($000):



	Foreign Currency Translation Adjustment		Interest Rate Instruments		Defined Benefit Pension Plan		Total Accumulated Other Comprehensive Income
AOCI - June 30, 2023	$	53,355	$	56,112	$	259	$	109,726
Other comprehensive income (loss) before reclassifications	(82,318)		24,948		(6,708)		(64,077)
Amounts reclassified from AOCI	—		(45,144)		(735)		(45,880)
Net current-period other comprehensive income (loss)	(82,318)		(20,196)		(7,443)		(109,957)
Reclass related to noncontrolling interests	2,871		—		—		2,871
AOCI - June 30, 2024	(26,092)		35,916		(7,184)		2,640
Other comprehensive income (loss) before reclassifications	409,069		499		(6,064)		403,505
Amounts reclassified from AOCI	—		(32,397)		(287)		(32,685)
Net current-period other comprehensive income (loss)	409,069		(31,898)		(6,351)		370,820
AOCI - Reclass related to noncontrolling interests	(1,423)		—		—		(1,423)
AOCI - June 30, 2025	381,554		4,018		(13,535)		372,037
Other comprehensive income (loss) before reclassifications	(159,065)		6,048		1,865		(151,152)
Amounts reclassified from AOCI	—		(17,462)		—		(17,462)
Net current-period other comprehensive income (loss)	(159,065)		(11,414)		1,865		(168,614)
AOCI - Reclass related to noncontrolling interests	689		—		—		689
AOCI - June 30, 2026	$	223,178	$	(7,396)	$	(11,670)	$	204,112

Debt

12 Months Ended

Jun. 30, 2026

Debt Disclosure [Abstract]

Debt

The components of debt as of the dates indicated were as follows ($000):


	June 30, 2026		June 30, 2025
Term A Facility, interest at adjusted SOFR, as defined, plus 1.25%	$	1,140,625	$	624,375

Debt issuance costs, Term A Facility and Revolving Credit Facility	(10,087)		(8,141)
Term B Facility, interest at adjusted SOFR, as defined, plus 1.75%	1,080,000		2,102,358
Debt issuance costs, Term B Facility	(21,228)		(36,478)
Other Credit Facility	28,004		—
Borrowings on local lines of credit	4,791		2,091
Facility construction loan in Germany	14,062		17,682
5.00% Senior Notes	990,000		990,000
Debt Issuance costs and discount, Senior Notes	(3,943)		(4,966)
Total debt	3,222,224		3,686,921
Current portion of long-term debt	(7,916)		(188,306)
Long-term debt, less current portion	$	3,214,308	$	3,498,615

The required annual principal repayments for all indebtedness for the next five years and thereafter, as of June 30, 2026, is set forth in the following table ($000):


	Year Ending
	June 30,
2027	$	7,916
2028	34,375
2029	93,629
2030	2,135,625
2031	985,937
Thereafter	—
Total	$	3,257,482

Senior Credit Facilities

On July 1, 2022 (the “Closing Date”), Coherent entered into a credit agreement (the “Credit Agreement”) by and among the Company, as borrower (in such capacity, the “Borrower”), the lenders, and other parties thereto, and JP Morgan Chase Bank, N.A., as administrative agent and collateral agent, which provided for senior secured financing of $4.0 billion, consisting of a term loan A credit facility (the “Term A Facility”) maturing July 1, 2027, with an aggregate principal amount of $850 million, a term loan B credit facility (the “Term B Facility,” and together with the Term A Facility, the “Term Facilities”) maturing July 1, 2029, with an aggregate principal amount of $2,800 million, and a revolving credit facility (the “Revolving Credit Facility,” and together with the Term Facilities, the “Senior Credit Facilities”) maturing July 1, 2027, in an aggregate available amount of $350 million, including a letter of credit sub-facility of up to $50 million. On the Closing Date, the Borrower and certain of its direct and indirect subsidiaries provided a guaranty of all obligations of the Borrower and the other loan parties under the Credit Agreement and the other loan documents, secured cash management agreements and secured hedge agreements with the lenders and/or their affiliates (subject to certain exceptions). The Borrower and the other guarantors have also granted a security interest in substantially all of their assets to secure such obligations. On March 31, 2023, Coherent entered into Amendment No. 1 to the Credit Agreement, which replaced the adjusted LIBOR-based rate of interest therein with an adjusted SOFR-based rate of interest. On April 2, 2024, Coherent entered into Amendment No. 2 to the Credit Agreement, under which the principal amount of term B loans outstanding under the Credit Agreement (the “Existing Term B Loans”) were replaced with an equal amount of new term loans (the “New Term B Loans”) having substantially similar terms as the Existing Term B Loans, except with respect to the interest rate applicable to the New Term B Loans and certain other provisions. On January 2, 2025, Coherent entered into Amendment No. 3 to the Credit Agreement, under which the principal amount of New Term B Loans outstanding under the Credit Agreement were replaced with an equal amount of new term loans (the “New Term B-2 Loans”) having substantially similar terms as the New Term B Loans, except with respect to the interest rate applicable to the New Term B-2 Loans and certain other provisions. The maturity of the New Term B-2 Loans and Revolving Credit Facility was unchanged.

On September 26, 2025, the Company entered into Amendment No. 4 (“Amendment No. 4”) and Amendment No. 5 (“Amendment No. 5”) to the Credit Agreement. Under Amendment No. 4, (i) the existing revolving credit commitments were refinanced and replaced with new senior secured revolving credit commitments, (ii) $350 million of senior secured incremental revolving credit commitments were added, increasing the total revolving credit facility to $700 million (the “2025 Revolving Loans”), including a letter of credit sub-facility of up to $100 million, and (iii) a $1,250 million new tranche of senior secured incremental term A loans was added (the “2025 Incremental Term A Loans”), the proceeds of which were used, in part, to repay all outstanding principal, interest and fees of term A loans outstanding under the Credit Agreement (the “Existing Term A Loans”). As amended, the 2025 Revolving Loans and the 2025 Incremental Term A Loans each bear interest at an adjusted SOFR rate subject to a 0.00% floor plus a range of 1.25% to 2.25% based on the Company’s total net leverage ratio. The interest rate applicable to the 2025 Revolving Loans and the 2025 Incremental Term A Loans is initially a SOFR-based rate plus 1.50% as of June 30, 2026. The 2025 Revolving Loans and the 2025 Incremental Term A Loans mature on the earlier of September 26, 2030 or a “Springing Maturity Date,” which is a date that is 91 days prior to the stated maturity of either (i) the Company’s unsecured senior notes or (ii) the term B loans then outstanding if, on such 91st day, the applicable senior notes or term B loans remain outstanding and liquidity is less than (x) $250 million plus (y) the aggregate outstanding principal amount of such notes or term B loans, as applicable. Under Amendment No. 5, the outstanding New Term B-2 Loans were replaced with an equal amount of new term loans (the “New Term B-3 Loans”) having substantially similar terms as the New Term B-2 Loans, except with respect to the interest rate applicable to the New Term B-3 Loans and certain other provisions. As further amended, the New Term B-3 Loans bear interest at a SOFR-based rate (subject to a 0.50% floor) plus 1.75% as of June 30, 2026. The New Term B-3 Loans will mature on July 1, 2029.

Debt extinguishment costs related to the termination of the Existing Term Loans of $3 million were expensed in Other expense, net in the Consolidated Statement of Earnings during the twelve months ended June 30, 2026.

In relation to the Term Facilities, the Company incurred interest expense, including amortization of debt issuance costs and the benefit of the interest rate cap and swap, of $139 million and $192 million in the years ended June 30, 2026 and June 30, 2025, respectively, which is included in Interest expense in the Condensed Consolidated Statements of Earnings (Loss). Our interest rate cap together with our interest rate swap (through September 30, 2024), reduced interest expense by $17 million and $32 million during the years ended June 30, 2026 and June 30, 2025, respectively. The amortization of debt issuance costs included in interest expense was $17 million in both the years ended June 30, 2026 and 2025. Debt issuance costs are presented as a reduction to debt within the long-term debt caption in the Condensed Consolidated Balance Sheets.

As of June 30, 2026, the Company was in compliance with all covenants under the Senior Credit Facilities.

The Company had aggregate availability of $664 million under its Revolving Credit Facility as of June 30, 2026.

Debt Assumed through Acquisition

We assumed the remaining balances of three term loans with the closing of the acquisition of Coherent, Inc., two of which were repaid prior to June 30, 2024. The aggregate principal amount outstanding under the remaining assumed term loan is $14 million as of June 30, 2026 and is for a Facility Construction Loan in Germany due in 2030 that bears interest at 1.55% per annum. Payments are made quarterly.

5.000% Senior Notes due 2029

On December 10, 2021, the Company issued $990 million aggregate principal amount of Senior Notes pursuant to the indenture, dated as of December 10, 2021 (the “Indenture”), between the Company and U.S. Bank National Association, as trustee. The Senior Notes are guaranteed by each of the Company’s domestic subsidiaries that guarantee its obligations under the Senior Credit Facilities. Interest on the Senior Notes is payable on December 15 and June 15 of each year, commencing on June 15, 2022, at a rate of 5.000% per annum. The Senior Notes will mature on December 15, 2029.

Beginning December 15, 2024, the Company may redeem the Senior Notes, in whole at any time or in part from time to time, at the redemption prices set forth in the Indenture, plus accrued and unpaid interest, if any, to, but excluding, the applicable redemption date. In addition, at any time prior to December 15, 2024, the Company had the ability to (but did not) redeem the Senior Notes, at its option, in whole at any time or in part from time to time, at a redemption price equal to 100% of the principal amount of the Senior Notes redeemed, plus a “make-whole” premium set forth in the Indenture, plus accrued and unpaid interest, if any, to, but excluding, the applicable redemption date. Notwithstanding the foregoing, prior to December 15, 2024, the Company had the ability to redeem up to 40% of the aggregate principal amount of the Senior Notes using the proceeds of certain equity offerings as set forth in the Indenture, at a redemption price equal to 105.000% of the principal amount thereof, plus accrued and unpaid interest, if any, to, but excluding, the applicable redemption date. The Company did not exercise this option.

In relation to the Senior Notes, the Company incurred interest expense of $51 million and $50 million in the years ended June 30, 2026 and June 30, 2025, respectively, which is included in Interest expense in the Condensed Consolidated Statements of Earnings (Loss).

The Indenture contains customary covenants and events of default, including default relating to, among other things, payment default, failure to comply with covenants or agreements contained in the Indenture or the Senior Notes and certain provisions related to bankruptcy events. As of June 30, 2026, the Company was in compliance with all covenants under the Indenture.

Other Credit Facility

On June 8, 2026, a certain wholly-owned foreign subsidiary of the Company entered into an unsecured credit facility agreement with a local lender providing for an aggregate line of credit of up to $184 million (based on exchange rates in effect at signing), which is denominated in local currency (the “June 2026 Credit Line”). On June 8, 2026, such subsidiary of the Company utilized part of the June 2026 Credit Line by entering into an unsecured credit working capital facility agreement with such local lender providing for aggregate commitments of $29 million (the “June 2026 Facility”). The June 2026 Facility matures on June 12, 2029 and had $28 million outstanding as of June 30, 2026. Borrowings bear interest at the one-year local currency lending benchmark less 61 basis points, and the interest is payable quarterly. Neither the Company, nor any other of its subsidiaries, is a party to or guarantor of the June 2026 Facility. The June 2026 Facility contains various affirmative and negative covenants that require the borrowers to meet specified financial ratios and financial tests and customary events of default, subject to applicable grace periods, cure periods and thresholds.

- Definition

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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Reference 11: http://www.xbrl.org/2003/role/disclosureRef
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Reference 12: http://www.xbrl.org/2003/role/disclosureRef
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Reference 13: http://www.xbrl.org/2003/role/disclosureRef
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Reference 14: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

Share-Based Compensation

12 Months Ended

Jun. 30, 2026

Share-Based Payment Arrangement [Abstract]

Share-Based Compensation

Share-Based CompensationShare-Based Compensation

The Company grants equity awards pursuant to the Coherent Corp. Omnibus Incentive Plan (as amended and restated, the “Plan”). The Plan was originally approved by the Company's shareholders at the Annual Meeting in November 2018, and was subsequently amended, restated and approved by the Company’s shareholders at the Annual Meetings held in November 2020, November 2023 and November 2024. The Plan provides for the grant of stock options, stock appreciation rights, restricted shares, restricted share units, deferred shares, performance shares and performance units to employees (including officers), consultants and directors of the Company. The maximum number of shares of Coherent Common Stock authorized for issuance under the Plan is limited to 16,615,000 shares of Coherent Common Stock, not including any remaining shares forfeited under the predecessor plans that may be rolled into the Plan. Certain awards under the Plan have certain vesting provisions predicated upon the death, retirement or disability of the grantee.

As of June 30, 2026, there were approximately 6.5 million shares available to be issued under the Plan, including forfeited shares from predecessor plans.

The Company has an Employee Stock Purchase Plan whereby eligible employees may authorize payroll deductions (subject to certain limitations) of up to 15% (or such lesser amount as may be determined by the plan administrator) of their wages and base salary to purchase shares at an amount which will not be less than 85% of the lower of (i) the fair market value of the common stock on the first trading day of the offering period and (ii) the fair market value of the common stock on the last trading day of the approximately six-month offering period.

We record share-based compensation expense for these awards, which requires the recognition of the grant-date fair value of share-based compensation in net earnings. We recognize the share-based compensation expense over the requisite service period of the individual grantees, which generally equals the vesting period. We account for cash-based stock appreciation rights, cash-based restricted share units and cash-based performance share units as liability awards.

Share-based compensation expense for the fiscal years ended June 30, 2026, 2025 and 2024 is as follows ($000):



Year Ended June 30,	2026		2025		2024


Stock Options and Cash-Based Stock Appreciation Rights	$	7,336	$	334	$	1,149
Restricted Share Awards and Cash-Based Restricted Share Unit Awards	97,934		93,223		92,634
Performance Share Awards and Cash-Based Performance Share Unit Awards	77,391		57,767		21,912
Employee Stock Purchase Plan	11,143		9,648		11,200
	$	193,804	$	160,972	$	126,895

Stock Options and Cash-Based Stock Appreciation Rights

We utilize the Black-Scholes valuation model for estimating the fair value of stock options and cash-based stock appreciation rights. During the fiscal years ended June 30, 2026, 2025 and 2024, no stock options were issued.

Stock option and cash-based stock appreciation rights activity during the fiscal year ended June 30, 2026 was as follows:



	Stock Options			Cash-Based Stock Appreciation Rights
	Number of Shares	Weighted Average Exercise Price		Number of Rights	Weighted Average Exercise Price
Outstanding - June 30, 2025	897,096	$	35.43	25,133	$	36.93

Exercised	(518,994)	$	32.82	(8,695)	$	38.52
Forfeited and Expired	(1,566)	$	17.84	—	$	—
Outstanding - June 30, 2026	376,536	$	39.10	16,438	$	36.08
Exercisable - June 30, 2026	376,536	$	39.10	16,438	$	36.08

As of June 30, 2026, 2025 and 2024, the aggregate intrinsic value of stock options and cash-based stock appreciation rights outstanding and exercisable was $140 million, $50 million and $61 million, respectively. Aggregate intrinsic value represents the total pretax intrinsic value (the difference between our closing stock price on the last trading day of the year ended June 30, and the option’s exercise price, multiplied by the number of in-the-money options) that would have been received by the option holders had all option holders exercised their options on June 30, 2026. This amount varies based on the fair market value of the Company’s stock. The total intrinsic value of stock options and cash-based stock appreciation rights exercised during the fiscal years ended June 30, 2026, 2025, and 2024 was $75 million, $36 million, and $25 million, respectively. As of June 30, 2026, there was no unrecognized compensation cost related to non-vested stock options and cash-based stock appreciation rights.

Outstanding and exercisable stock options at June 30, 2026 were as follows:


	Stock Options and Cash-Based Stock Appreciation Rights Outstanding				Stock Options and Cash-Based Stock Appreciation Rights Exercisable
	Number of	Weighted Average Remaining	Weighted Average		Number of	Weighted Average Remaining	Weighted Average
Range of	Shares or	Contractual Term	Exercise		Shares or	Contractual Term	Exercise
Exercise Prices	Rights	(Years)	Price		Rights	(Years)	Price

$18.07 - $24.34	15,035	0.14	$	21.67	15,035	0.14	$	21.67
$24.35 - $35.38	64,381	1.66	$	34.22	64,381	1.66	$	34.22
$35.39 - $36.89	203,679	3.36	$	36.33	203,679	3.36	$	36.33
$36.90 - $49.90	109,879	2.08	$	49.03	109,879	2.08	$	49.03
	392,974	2.60	$	38.97	392,974	2.60	$	38.97

Restricted Share Awards, Restricted Share Units, and Cash-Based Restricted Share Units

Restricted share awards, restricted share units, and cash-based restricted share units compensation expense was calculated based on the number of shares or units expected to be earned by the grantee multiplied by the stock price at the date of grant (for restricted share awards and restricted share units) or the stock price at the period end date (for cash-based restricted share units), and is being recognized over the vesting period. Generally, for awards issued through fiscal 2025, the restricted share awards, restricted share units, and cash-based restricted share units have a three-year tranche vesting provision. Restricted share units granted during fiscal 2026 generally vest over three years, with one-third of the award vesting on the first anniversary of the grant date and the remaining two-thirds vesting in equal quarterly installments over the subsequent two years. There were no restricted share awards issued in the fiscal years ended June 30, 2026, 2025 and 2024, and all previous restricted share awards have been amortized in full.

Restricted share unit and cash-based restricted share unit activity during the fiscal year ended June 30, 2026, was as follows:



	Restricted Share Units			Cash-Based Restricted Share Units
	Number of Units	Weighted Average Grant Date Fair Value		Number of Units	Weighted Average Grant Date Fair Value
Nonvested - June 30, 2025	3,185,952	$	61.13	9,699	$	59.49
Granted	1,213,655	$	114.31	3,870	$	95.20
Vested	(1,698,871)	$	101.99	(4,723)	$	55.54
Forfeited	(294,022)	$	110.98	—	$	—
Nonvested - June 30, 2026	2,406,714	$	89.99	8,846	$	77.22

As of June 30, 2026, total unrecognized compensation cost related to non-vested, restricted share units and cash-based restricted share units was $140 million. This cost is expected to be recognized over a weighted-average period of approximately 2 years. The restricted share unit compensation expense was calculated based on the number of shares expected to be earned, multiplied by the stock price at the date of grant, and is being recognized over the vesting period. The cash-based restricted share unit compensation expense was calculated based on the number of units expected to be earned, multiplied by the stock price at the period-end date, and is being recognized over the vesting period. The total fair value of the restricted share units and cash-based restricted share units granted during the years ended June 30, 2026, 2025 and 2024, was $139 million, $127 million and $110 million, respectively. The total fair value of restricted share awards, restricted share units and cash-based restricted share units vested was $235 million, $185 million and $74 million during the years ended June 30, 2026, 2025 and 2024, respectively.

Performance Share Units

The Compensation Committee of the Board of Directors of the Company has granted certain executive officers and employees performance share units under the Plan. As of June 30, 2026, we had outstanding grants covering performance periods ranging from 12 to 36 months. These grants are intended to provide continuing emphasis on specified financial performance goals that the Company considers important contributors to the creation of long-term shareholder value. These grants are payable only if the Company achieves specified levels of financial performance during the performance periods.

For our relative Total Shareholder Return (“TSR”) performance-based units, which are based on market performance of our stock as compared to the S&P Composite 1500 – Electronic Equipment, Instruments & Components Index, the compensation cost is recognized over the performance period on a straight-line basis, because the grants vest only at the end of the measurement period, and the probability of actual shares expected to be earned is considered in the grant date valuation. As a result, the expense is not adjusted to reflect the actual shares earned. We estimate the fair value of the TSR performance-based units using the Monte-Carlo simulation model.

The performance share unit compensation expense was calculated based on the number of shares expected to be earned, multiplied by the stock price at the date of grant, and is being recognized over the vesting period.

Performance share unit activity relating to the Plan during the year ended June 30, 2026, was as follows:



	Performance Share Units
	Number of Units	Weighted Average Grant Date Fair Value
Nonvested - June 30, 2025	2,138,134	$	92.11
Granted	624,116	$	148.94
Vested	(315,066)	$	58.08
Forfeited	(72,581)	$	88.17
Performance Adjustments	23,282	58.08
Nonvested - June 30, 2026	2,397,885	$	110.06

As of June 30, 2026, total unrecognized compensation cost related to non-vested performance share units was $127 million. This cost is expected to be recognized over a weighted-average period of approximately 1.27 years. The total fair value of the performance share units granted during the fiscal years ended June 30, 2026, 2025 and 2024 was $88 million, $88 million and $113 million, respectively. The total fair value of performance share units and cash-based performance share units vested during the fiscal years ended June 30, 2026, 2025 and 2024 was $11 million, $17 million and $14 million, respectively.

Income Taxes - Schedule of Prior Reconciliation of Income Tax Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract]
Taxes at statutory rate	$ 178,024	$ 19,778	$ (31,006)
Increase (decrease) in taxes resulting from:
State income taxes-net of federal benefit	1,694	(4,265)	(22)
Taxes on non U.S. earnings		3,632	16,601
Valuation allowance	37,883	20,295	43,866
U.S. branch income		(1,216)	3,226
Noncontrolling interest		4,284	1,002
Research and manufacturing incentive deductions and credits		(26,396)	(41,387)
Stock compensation	(18,949)	2,153	13,294
GILTI and FDII		13,631	(629)
Uncertain tax positions	(62,799)	6,814	3,301
Notional interest		(10,174)	(2,521)
Assets held-for-sale		36,895	0
Other	(4,347)	(1,307)	5,392
Total Income Tax Expense	$ 60,849	$ 64,124	$ 11,117
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Taxes at statutory rate	21.00%	21.00%	21.00%
Increase (decrease) in taxes resulting from:
State income taxes-net of federal benefit	0.00%	(5.00%)	0.00%
Taxes on non U.S. earnings		4.00%	(11.00%)
Valuation allowance	5.00%	22.00%	(30.00%)
U.S. branch income		(1.00%)	(2.00%)
Noncontrolling interest		4.00%	(1.00%)
Research and manufacturing incentive deductions and credits		(28.00%)	28.00%
Stock compensation	(2.00%)	2.00%	(9.00%)
GILTI and FDII		15.00%	0.00%
Uncertain tax positions	(7.00%)	7.00%	(2.00%)
Notional interest		(11.00%)	2.00%
Assets held-for-sale		39.00%	0.00%
Other	(1.00%)	(1.00%)	(4.00%)
Total Income Tax Expense (Benefit)	7.00%	68.00%	(8.00%)

Consolidated Statements of Earnings (Loss) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
Income Statement [Abstract]
Revenues	$ 7,118,181	$ 5,810,115	$ 4,707,688
Costs, Expenses, and Other Expense (Income)
Cost of goods sold	4,449,141	3,766,793	3,251,724
Research and development	722,952	581,924	478,788
Selling, general and administrative	1,044,566	926,451	854,001
Restructuring charges (recoveries)	63,390	160,081	27,054
Impairment of assets held-for-sale	64,404	84,988	0
Gain on sale of business	(124,133)	0	0
Interest expense	190,267	243,251	288,475
Other expense (income), net	(140,139)	(47,554)	(44,707)
Total Costs, Expenses, & Other Expense	6,270,448	5,715,934	4,855,335
Earnings (Loss) Before Income Taxes	847,733	94,181	(147,647)
Income Tax Expense	60,849	64,124	11,117
Net Earnings (Loss)	786,884	30,057	(158,764)
Net Loss Attributable to Noncontrolling Interests	(18,114)	(19,307)	(2,610)
Net Earnings (Loss) Attributable to Coherent Corp.	804,998	49,364	(156,154)
Less: Dividends on Preferred Stock	35,102	129,926	123,357
Basic earnings (loss) available to common shareholders	$ 769,896	$ (80,562)	$ (279,511)
Basic Earnings (Loss) Per Share (in usd per share)	$ 4.34	$ (0.52)	$ (1.84)
Diluted Earnings (Loss) Per Share (in usd per share)	$ 4.12	$ (0.52)	$ (1.84)

Restructuring Plans - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
Restructuring Cost and Reserve [Line Items]
Restructuring charges (recoveries)	$ 63,390	$ 160,081	$ 27,054
2023 Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges (recoveries)	893	52,997
Restructuring accrual	28,580	44,230	51,061
Payments	(5,336)	(12,954)
Asset write-offs and other	(11,207)	(46,874)
2023 Plan \| Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring charges (recoveries)	(11,349)	6,123
Restructuring accrual, current	7,000
Restructuring accrual, noncurrent	22,000
Restructuring accrual	28,580	44,230	51,061
Payments	(5,336)	(12,954)
Asset write-offs and other	1,035	0
2023 Plan \| Asset Write-Offs
Restructuring Cost and Reserve [Line Items]
Restructuring charges (recoveries)	250	24,010
Restructuring accrual	0	0	0
Payments	0	0
Asset write-offs and other	(250)	(24,010)
2023 Plan \| Other
Restructuring Cost and Reserve [Line Items]
Restructuring charges (recoveries)	11,992	22,864
Restructuring accrual	0	0	0
Payments	0	0
Asset write-offs and other	(11,992)	(22,864)
2023 Plan \| Acceleration of Depreciation, Write-Off of Property and Equipment, and Site Move Costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges (recoveries)		27,000
2025 Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges (recoveries)	62,497	107,084
Restructuring accrual	44,536	47,113	0
Payments	(20,652)	(59,971)
Asset write-offs and other	(44,422)	0
2025 Plan \| Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring charges (recoveries)	27,583	23,983
Restructuring accrual, current	23,000
Restructuring accrual	22,531	16,722	0
Payments	(20,652)	(7,261)
Asset write-offs and other	(1,122)	0
2025 Plan \| Asset Write-Offs
Restructuring Cost and Reserve [Line Items]
Restructuring charges (recoveries)	26,068	59,068
Restructuring accrual, current	10,000
Restructuring accrual, noncurrent	12,000
Restructuring accrual	9,774	10,494	0
Payments	0	(48,574)
Asset write-offs and other	(26,788)	0
2025 Plan \| Other
Restructuring Cost and Reserve [Line Items]
Restructuring charges (recoveries)	8,846	24,033
Restructuring accrual	12,231	19,897	$ 0
Payments	0	(4,136)
Asset write-offs and other	$ (16,512)	$ 0

Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance-beginning of period	$ 5,998,022	$ 5,581,507	$ 4,987,551
Other comprehensive income (loss) before reclassifications	(151,152)	403,505
Amounts reclassified from AOCI	(17,462)	(32,685)
Net current-period other comprehensive income (loss)	(168,614)	370,820	(109,528)
Reclass related to noncontrolling interests	689	(1,423)
Balance-end of period	11,238,200	5,998,022	5,581,507
Total Accumulated Other Comprehensive Income
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance-beginning of period	372,037	2,640	109,726
Other comprehensive income (loss) before reclassifications			(64,077)
Amounts reclassified from AOCI			(45,880)
Net current-period other comprehensive income (loss)			(109,957)
Reclass related to noncontrolling interests			2,871
Balance-end of period	204,112	372,037	2,640
Interest Rate Instruments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance-beginning of period	4,018	35,916	56,112
Other comprehensive income (loss) before reclassifications	6,048	499	24,948
Amounts reclassified from AOCI	(17,462)	(32,397)	(45,144)
Net current-period other comprehensive income (loss)	(11,414)	(31,898)	(20,196)
Reclass related to noncontrolling interests	0	0	0
Balance-end of period	(7,396)	4,018	35,916
Defined Benefit Pension Plan
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance-beginning of period	(13,535)	(7,184)	259
Other comprehensive income (loss) before reclassifications	1,865	(6,064)	(6,708)
Amounts reclassified from AOCI	0	(287)	(735)
Net current-period other comprehensive income (loss)	1,865	(6,351)	(7,443)
Reclass related to noncontrolling interests	0	0	0
Balance-end of period	(11,670)	(13,535)	(7,184)
Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance-beginning of period	381,554	(26,092)	53,355
Other comprehensive income (loss) before reclassifications	(159,065)	409,069	(82,318)
Amounts reclassified from AOCI	0	0	0
Net current-period other comprehensive income (loss)	(159,065)	409,069	(82,318)
Reclass related to noncontrolling interests	689	(1,423)	2,871
Balance-end of period	$ 223,178	$ 381,554	$ (26,092)

SCHEDULE II

12 Months Ended

Jun. 30, 2026

SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]

SCHEDULE II

COHERENT CORP. AND SUBSIDIARIES

VALUATION AND QUALIFYING ACCOUNTS

YEARS ENDED JUNE 30, 2026, 2025, AND 2024

(IN THOUSANDS OF DOLLARS)


	Balance at Beginning of Year		Charged to Expense		Charged to Other Accounts			Assets Held-For-Sale		Deduction from Reserves			Balance at End of Year
YEAR ENDED JUNE 30, 2026:
Allowance for doubtful accounts	$	12,189	$	6,042	$	—		$	(13)	$	(5,025)	(2)	$	13,193
Warranty reserves	$	32,754	$	24,404	$	—		$	(869)	$	(28,835)		$	27,454
Deferred tax asset valuation allowance	$	163,678	$	48,095	$	277	(1)	$	(18,126)	$	—		$	193,924

YEAR ENDED JUNE 30, 2025:
Allowance for doubtful accounts	$	9,511	$	8,181	$	—		$	(117)	$	(5,386)	(2)	$	12,189
Warranty reserves	$	44,193	$	26,352	$	—		$	(4,299)	$	(33,492)		$	32,754
Deferred tax asset valuation allowance	$	154,830	$	15,413	$	3,577	(1)	$	(10,142)	$	—		$	163,678

YEAR ENDED JUNE 30, 2024:
Allowance for doubtful accounts	$	8,005	$	5,161	$	—		$	—	$	(3,655)	(2)	$	9,511
Warranty reserves	$	47,563	$	34,362	$	—		$	—	$	(37,732)		$	44,193
Deferred tax asset valuation allowance	$	97,180	$	57,968	$	(318)	(1)	$	—	$	—		$	154,830

(1) Primarily related to currency translation adjustments.

(2) Primarily relates to write-offs of accounts receivable.

Debt - Other Credit Facility (Details) - Foreign Line of Credit - Line of credit - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2026	Jun. 08, 2026
June 2026 Credit Line
Line of Credit Facility [Line Items]
Aggregate amount of credit facility		$ 184
June 2026 Facility
Line of Credit Facility [Line Items]
Aggregate amount of credit facility		$ 29
Outstanding balance	$ 28
Basis spread on variable rate	(0.61%)

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References + Details

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

+ Details

Revenue from Contracts with Customers - Additional Information (Details) $ in Thousands	12 Months Ended
	Jun. 30, 2026 USD ($) segment	Jun. 30, 2025 USD ($) segment
Revenue from Contract with Customer [Abstract]
Number of reporting markets \| segment	2	3
Revenue recognized related to customer payments	$ 51,000
Contract liabilities	63,000
Contract liabilities included in other accrued liabilities	48,098	$ 62,967
Contract liabilities included within other liabilities	$ 15,000	$ 9,000

Segment and Geographic Reporting - Schedule of Geographical Information for Long Lived Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Jun. 30, 2025
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]
Long-Lived Assets	$ 3,432,316	$ 2,147,530
United States
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]
Long-Lived Assets	1,394,823	1,092,389
Non-United States
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]
Long-Lived Assets	2,037,493	1,055,141
China
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]
Long-Lived Assets	968,796	402,960
Malaysia
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]
Long-Lived Assets	473,786	196,543
Germany
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]
Long-Lived Assets	189,819	189,281
Vietnam
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]
Long-Lived Assets	119,145	65,565
Sweden
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]
Long-Lived Assets	98,517	51,032
Switzerland
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]
Long-Lived Assets	68,031	49,602
Philippines
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]
Long-Lived Assets	35,754	25,406
United Kingdom
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]
Long-Lived Assets	19,479	20,594
Korea
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]
Long-Lived Assets	13,704	16,037
Australia
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]
Long-Lived Assets	14,516	9,014
Taiwan
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]
Long-Lived Assets	4,266	6,063
Rest of World
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]
Long-Lived Assets	$ 31,680	$ 23,044

Debt - Senior Credit Facility (Details) - USD ($)			12 Months Ended
Debt - Senior Credit Facility (Details) - USD ($)	Jun. 30, 2026	Sep. 26, 2025	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024	Jul. 01, 2022
Line of Credit Facility [Line Items]
Amortization of debt issuance costs			$ 17,560,000	$ 19,774,000	$ 17,652,000
Secured Debt \| Credit Agreement \| Line of credit
Line of Credit Facility [Line Items]
Aggregate amount of credit facility		$ 350,000,000				$ 4,000,000,000.0
Interest expense incurred			139,000,000	192,000,000
Increase (decrease) in interest expense			(17,000,000)	(32,000,000)
Amortization of debt issuance costs			$ 17,000,000	$ 17,000,000
Term A Facility \| Credit Agreement \| Line of credit
Line of Credit Facility [Line Items]
Aggregate amount of credit facility						850,000,000
Basis spread on variable rate			1.25%
Debt extinguishment costs expensed			$ 3,000,000
Term B Facility \| Credit Agreement \| Line of credit
Line of Credit Facility [Line Items]
Aggregate amount of credit facility						2,800,000,000
Basis spread on variable rate			1.75%
Liquidity amount triggering springing maturity date		250,000,000
Revolving Credit Facility \| Credit Agreement \| Line of credit
Line of Credit Facility [Line Items]
Aggregate amount of credit facility		$ 700,000,000				350,000,000
Adjusted variable rate floor		0.00%
Basis spread on variable rate	1.50%
Springing maturity date, days prior to stated maturity		91 days
Available credit under lines of credit	$ 664,000,000		$ 664,000,000
Revolving Credit Facility \| Credit Agreement \| Line of credit \| Minimum
Line of Credit Facility [Line Items]
Basis spread on variable rate		1.25%
Revolving Credit Facility \| Credit Agreement \| Line of credit \| Maximum
Line of Credit Facility [Line Items]
Basis spread on variable rate		2.25%
Letter of Credit \| Credit Agreement \| Line of credit
Line of Credit Facility [Line Items]
Aggregate amount of credit facility		$ 100,000,000				$ 50,000,000
2025 Incremental Term A Loans \| Credit Agreement \| Line of credit
Line of Credit Facility [Line Items]
Aggregate principal amount of bridge loan		$ 1,250,000,000
Adjusted variable rate floor		0.00%
Springing maturity date, days prior to stated maturity		91 days
2025 Incremental Term A Loans \| Credit Agreement \| Line of credit \| Minimum
Line of Credit Facility [Line Items]
Basis spread on variable rate		1.25%
2025 Incremental Term A Loans \| Credit Agreement \| Line of credit \| Maximum
Line of Credit Facility [Line Items]
Basis spread on variable rate		2.25%
Term B-3 Loans \| Credit Agreement \| Line of credit
Line of Credit Facility [Line Items]
Adjusted variable rate floor	0.50%
Basis spread on variable rate	1.75%

Share-Based Compensation - Schedule of Share-Based Compensation Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense	$ 193,804	$ 160,972	$ 126,895
Stock Options and Cash-Based Stock Appreciation Rights
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense	7,336	334	1,149
Restricted Share Awards and Cash-Based Restricted Share Unit Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense	97,934	93,223	92,634
Performance Share Awards and Cash-Based Performance Share Unit Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense	77,391	57,767	21,912
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense	$ 11,143	$ 9,648	$ 11,200

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
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-Name Accounting Standards Codification
-Section 50
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-Subparagraph (f)(2)
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Reference 27: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(03)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 28: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (d)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 29: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (e)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 30: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (e)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

+ Details

Income Taxes - Schedule of Changes in Liability for Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Beginning balance	$ 124,008	$ 116,697	$ 115,180
Increases in current year tax positions	6,800	9,660	5,168
Settlements	0	0	(2,970)
Expiration of statute of limitations	(67,049)	(2,349)	(681)
Ending balance	$ 63,759	$ 124,008	$ 116,697

Income Taxes - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
Income Tax Contingency [Line Items]
Estimated associated withholding tax related to previously taxed earnings	$ 37,000
Cash paid for income taxes	$ 208,129	$ 166,849	$ 97,295
Effective income tax rate, reductions	0.90%	11.60%	5.60%
Interest and penalties recognized within income tax expense	$ (4,100)	$ 2,000	$ 2,300
Interest and penalties accrued	5,000	9,000	7,000
Gross unrecognized tax benefits that would impact effective tax rate	8,000	$ 20,000	$ 19,000
Unrecognized tax benefits expected decrease during the next 12 months	$ 3,000
Foreign Taxing Jurisdictions
Income Tax Contingency [Line Items]
Impact of income tax holiday on diluted earnings per share (in usd per share)	$ 0.04	$ 0.06	$ 0.05

Fair Value of Financial Instruments - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024	Sep. 01, 2024	Aug. 31, 2024	Feb. 23, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted cash, current	$ 606
Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Time deposits with maturities of one year or less	825
Restricted cash, current	606	$ 724
Fair Value, Inputs, Level 1 \| Silicon Carbide
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted cash, current	604	720
Fair Value, Inputs, Level 1 \| Other Entities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted cash, current	2	4
Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Realized loss on derivative instruments	2		$ 15
Realized gain on derivative instruments		16
Tax on unremitted earnings
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
SOFR percentage of derivative						1.92%
Fixed interest rate						0.853%
Notional amount				$ 1,500	$ 500
Derivative asset	$ 3	$ 17

Employee Benefit Plans

12 Months Ended

Jun. 30, 2026

Retirement Benefits [Abstract]

Employee Benefit Plans

Eligible employees of the Company participate in an employee retirement plan. Under the Coherent Corp 401(k) Profit Sharing Plan (“Plan”), we match employee contributions to the plan equal to an amount of 50% of employee contributions up to a maximum of 8% of the employee’s individual earnings subject to IRS limitations. Employees become eligible for participation and Company matching contributions on their first day of employment. The Company’s matching contributions (net of forfeitures) during fiscal 2026, 2025 and 2024 were $14 million, $15 million, and $18 million, respectively. In addition, the Plan has a profit sharing retirement plan contribution for eligible U.S. employees of the Company. These contributions are made at the discretion of the Company’s Board of Directors and were zero for the year ended June 30, 2026 , $1 million in 2025, and $2 million in 2024.

Switzerland Defined Benefit Plan

The Company maintains a pension plan covering employees of our Swiss subsidiary (the “Swiss Plan”). Employer and employee contributions are made to the Swiss Plan based on various percentages of salary and wages that vary according to employee age and other factors. Employer contributions to the Swiss Plan were $6 million and $5 million for the years ended June 30, 2026 and 2025, respectively. Net periodic pension cost is not material for any year presented.

The underfunded pension liability was $22 million and $25 million as of June 30, 2026 and 2025, respectively. The pension adjustment amount recognized in accumulated other comprehensive income (loss) was a $1 million increase and $7 million decrease for the fiscal years ended June 30, 2026 and 2025, respectively. The accumulated benefit obligation was $144 million as of June 30, 2026, compared to $141 million as of June 30, 2025.

Other Defined Benefit Plans

As a result of the Coherent, Inc. acquisition on July 1, 2022, we assumed all assets and liabilities of defined benefit plans in the U.S., Germany, South Korea, Japan, Spain, and Italy (“other plans”). As is the customary practice with European and Asian companies, the plans are unfunded, with the exception of the Spanish plan which is partially funded. The U.S. qualified plan is also partially funded. Any new employees hired after January 1, 2007, are not eligible for the U.S. qualified and nonqualified plans. Effective August 31, 2018, both of the U.S. plans were amended to freeze all future compensation benefit accruals. Any new employees hired after 2000 are not eligible for the primary German pension plan. For one of the German plans and the U.S. qualified plan, unrealized gains and losses are recognized as a component of other comprehensive income (loss) within shareholders’ equity. For the other plans, we have elected to recognize all actuarial gains and losses on these plans immediately, as incurred.

Liabilities and expense for pension benefits are determined using actuarial methodologies and incorporate significant assumptions, including the interest rate used to discount the future estimated cash flows, the expected long-term rate of return on plan assets, and several assumptions relating to the employee workforce (salary increases, retirement age, and mortality). All of these assumptions were based upon management’s judgment, considering all known trends and uncertainties. Actual results that differ from these assumptions would impact future expense recognition and the cash funding requirements of our defined benefit plans.

For the other plans, employer contributions were $3 million in both the years ended June 30, 2026 and June 30, 2025, and net periodic pension cost was not material in either year. The underfunded pension liability was $27 million and $37 million as of June 30, 2026 and June 30, 2025, respectively. The pension adjustment amount recognized in accumulated other comprehensive income (loss) was a $1 million increase for both the fiscal years ended June 30, 2026 and June 30, 2025, respectively. The accumulated benefit obligation was $37 million and $47 million as of June 30, 2026 and June 30, 2025, respectively.

Estimated future benefit payments under all plans are estimated to be as follows ($000):


Year Ended June 30,
2027	$	11,400
2028	10,500
2029	11,300
2030	12,900
2031	13,700
Next five years	66,600