0000820318-26-000023 | 10-Q | XBRL Viewer

Assets Held-for-Sale and Sale of Businesses

3 Months Ended

Sep. 30, 2026

Discontinued Operations and Disposal Groups [Abstract]

Assets Held-for-Sale and Sale of Businesses

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 Condensed Consolidated Statements of Earnings in the first quarter of 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 was 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 Condensed 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 $115 million recorded within Gain on sale of business in the Condensed Consolidated Statements of Earnings (Loss) in the third quarter of fiscal 2026.

In fiscal 2026, the Company recorded additional non-cash impairment charges of $64 million related to three entities within the Industrial segment. Two of these entities had already been classified as held-for-sale as of June 30, 2025 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 and remains classified as held-for-sale at September 30, 2026. A plan to dispose of this entity was approved by management during the fourth quarter of fiscal 2026 as part of the Company’s strategic realignment and the Company expects to complete the disposal through a sale to a third party within one year of the held-for-sale classification date.

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

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



	September 30, 2026		June 30, 2026

Accounts receivable	$	828	$	628
Inventories	31,912		31,755
Prepaid and refundable income taxes	142		119
Prepaid and other current assets	3,071		3,127
Less: Impairment of assets held-for-sale	(17,502)		(7,015)
Total current assets held-for-sale	$	18,451	$	28,614

Property, plant & equipment, net	$	21,333	$	21,286
Goodwill	3,624		3,624

Other assets	1,833		12,368
Less: Impairment of assets held-for-sale	(26,790)		(37,278)
Total noncurrent assets held-for-sale	$	—	$	—

Accounts payable	$	3,816	$	3,328
Accrued compensation and benefits	3,204		3,289
Operating lease current liabilities	788		387
Accrued income taxes payable	413		(510)
Other accrued liabilities	4,476		4,512
Total current liabilities held-for-sale	$	12,697	$	11,006


Operating lease liabilities	$	980	$	1,076


Other liabilities	1,314		1,318
Total noncurrent liabilities held-for-sale	$	2,294	$	2,394

Debt - Senior Credit Facility (Details) - USD ($) $ in Thousands			3 Months Ended
	Sep. 30, 2026	Sep. 26, 2025	Sep. 30, 2026	Sep. 30, 2025	Jul. 01, 2022
Line of Credit Facility [Line Items]
Amortization of debt issuance costs			$ 2,458	$ 9,786
Secured Debt \| Credit Agreement \| Line of credit
Line of Credit Facility [Line Items]
Aggregate amount of credit facility		$ 350,000			$ 4,000,000
Interest expense incurred			30,000	41,000
Increase (decrease) in interest expense			(1,000)	(6,000)
Amortization of debt issuance costs			$ 2,000	10,000
Term A Facility \| Credit Agreement \| Line of credit
Line of Credit Facility [Line Items]
Aggregate amount of credit facility					850,000
Basis spread on variable rate			1.25%
Debt extinguishment costs expensed				$ 3,000
Term B Facility \| Credit Agreement \| Line of credit
Line of Credit Facility [Line Items]
Aggregate amount of credit facility					2,800,000
Basis spread on variable rate			1.75%
Liquidity amount triggering springing maturity date		250,000
Revolving Credit Facility \| Credit Agreement \| Line of credit
Line of Credit Facility [Line Items]
Aggregate amount of credit facility		$ 700,000			350,000
Adjusted variable rate floor		0.00%
Basis spread on variable rate	1.25%
Springing maturity date, days prior to stated maturity		91 days
Available credit under lines of credit	$ 669,000		$ 669,000
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			$ 50,000
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
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%

Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2026	Jun. 30, 2026
Property, Plant, and Equipment [Line Items]
Property, plant and equipment, gross	$ 5,732,269	$ 4,782,390
Less accumulated depreciation	(1,862,455)	(1,783,047)
Property, plant and equipment, net	3,869,814	2,999,343
Land and improvements
Property, Plant, and Equipment [Line Items]
Property, plant and equipment, gross	59,674	58,996
Buildings and improvements
Property, Plant, and Equipment [Line Items]
Property, plant and equipment, gross	1,048,462	1,030,787
Machinery and equipment
Property, Plant, and Equipment [Line Items]
Property, plant and equipment, gross	3,364,992	2,916,096
Construction in progress
Property, Plant, and Equipment [Line Items]
Property, plant and equipment, gross	$ 1,259,141	$ 776,511

- 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.

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- 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.

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+ Details

Noncontrolling Interests - Additional Information (Details) - USD ($) $ in Millions	Dec. 04, 2023	Oct. 10, 2023
Noncontrolling Interest [Line Items]
Sale of shares to noncontrolling interests		$ 1,000
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
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
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%

Condensed Consolidated Statements of Comprehensive Income (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2026	Sep. 30, 2025
Statement of Comprehensive Income [Abstract]
Change in fair value of interest rate instruments, taxes	$ (240)	$ (1,188)
Pension adjustment, taxes	$ 0	$ 0

Revenue from Contracts with Customers

3 Months Ended

Sep. 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 table summarizes disaggregated revenue by market ($000):




	Three Months Ended September 30,
Markets		2026		2025
Datacenter & Communications		$	1,951,725	$	1,090,000
Industrial		418,599		491,378
Total Revenues		$	2,370,324	$	1,581,378

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 three months ended September 30, 2026, we recognized revenue of $15 million related to customer payments that were included as contract liabilities in the Consolidated Balance Sheet as of June 30, 2026. We had $333 million of contract liabilities recorded in the Condensed Consolidated Balance Sheet as of September 30, 2026. As of September 30, 2026, $172 million of contract liabilities is included within Other accrued liabilities, and $161 million is included within Other liabilities on the Condensed Consolidated Balance Sheet. As of June 30, 2026, $48 million of contract liabilities is included in Other accrued liabilities, and $15 million is included within Other liabilities on the Condensed 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.

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Condensed Consolidated Statements of Equity and Mezzanine Equity (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2026	Sep. 30, 2025
Statement of Stockholders' Equity [Abstract]
Change in fair value of interest rate instruments, taxes	$ (240)	$ (1,188)
Pension adjustment, taxes	$ 0	$ 0

Segment Reporting - Schedule of Geographic Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2026	Sep. 30, 2025
Segment Reporting [Line Items]
Revenues	$ 2,370,324	$ 1,581,378
North America
Segment Reporting [Line Items]
Revenues	1,593,865	1,002,164
Europe
Segment Reporting [Line Items]
Revenues	269,711	191,699
China
Segment Reporting [Line Items]
Revenues	305,075	177,669
Japan
Segment Reporting [Line Items]
Revenues	88,273	116,324
Rest of World
Segment Reporting [Line Items]
Revenues	$ 113,400	$ 93,522

- 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.

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+ Details

Noncontrolling Interests - Schedule of Noncontrolling Interests Activity (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2026	Sep. 30, 2025
Equity, Attributable to Noncontrolling Interest [Roll Forward]
Balance-beginning of period	$ 11,238,200	$ 5,998,022
Share of foreign currency translation adjustments	80,461	(27,597)
Net loss	381,601	225,196
Balance-end of period	11,661,733	6,182,113
NCI
Equity, Attributable to Noncontrolling Interest [Roll Forward]
Balance-beginning of period	334,705	353,508
Share of foreign currency translation adjustments	83	(441)
Net loss	(3,072)	(1,153)
Balance-end of period	331,716	351,914
NCI \| Silicon Carbide
Equity, Attributable to Noncontrolling Interest [Roll Forward]
Balance-beginning of period	334,705	353,508
Share of foreign currency translation adjustments	83	(441)
Net loss	(3,072)	(1,153)
Balance-end of period	$ 331,716	$ 351,914

- Definition

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

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+ Details

- Definition

Amount of equity (deficit) attributable to parent and noncontrolling interest. Excludes temporary equity.

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+ Details

Goodwill and Other Intangible Assets - Schedule of Changes in Carrying Amount of Goodwill (Details) $ in Thousands	3 Months Ended
	Sep. 30, 2026 USD ($)
Goodwill [Roll Forward]
Balance-beginning of period	$ 4,375,597
Other reclassifications	0
Foreign currency translation	72,744
Balance-end of period	4,448,341
Datacenter & Communications
Goodwill [Roll Forward]
Balance-beginning of period	1,150,400
Other reclassifications	141,400
Foreign currency translation	1,340
Balance-end of period	1,293,140
Industrial
Goodwill [Roll Forward]
Balance-beginning of period	3,225,197
Other reclassifications	(141,400)
Foreign currency translation	71,404
Balance-end of period	$ 3,155,201

- 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

Segment Reporting - Additional Information (Details)	3 Months Ended
Segment Reporting - Additional Information (Details)	Sep. 30, 2026 segment
Segment Reporting [Abstract]
Number of reportable segments	2

Leases

3 Months Ended

Sep. 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 Condensed 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 Condensed 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, remaining lease terms, and discount rates ($000):



	Three Months Ended September 30, 2026
Finance lease cost

Interest on lease liabilities	$	194
Total finance lease cost	194
Operating lease cost	22,123
Sublease income	(474)
Total lease cost	$	21,843

Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from finance leases	$	194
Operating cash flows from operating leases	20,423
Financing cash flows from finance leases	508

Weighted-average remaining lease term (in years)
Finance leases	5.3
Operating leases	6.2

Weighted-average discount rate
Finance leases	5.6		%
Operating leases	5.7		%



	Three Months Ended September 30, 2025
Finance lease cost

Interest on lease liabilities	$	221
Total finance lease cost	221
Operating lease cost	14,947
Sublease income	(328)
Total lease cost	$	14,840

Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from finance leases	$	221
Operating cash flows from operating leases	14,919
Financing cash flows from finance leases	462

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, remaining lease terms, and discount rates ($000):



	Three Months Ended September 30, 2026
Finance lease cost

Interest on lease liabilities	$	194
Total finance lease cost	194
Operating lease cost	22,123
Sublease income	(474)
Total lease cost	$	21,843

Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from finance leases	$	194
Operating cash flows from operating leases	20,423
Financing cash flows from finance leases	508

Weighted-average remaining lease term (in years)
Finance leases	5.3
Operating leases	6.2

Weighted-average discount rate
Finance leases	5.6		%
Operating leases	5.7		%



	Three Months Ended September 30, 2025
Finance lease cost

Interest on lease liabilities	$	221
Total finance lease cost	221
Operating lease cost	14,947
Sublease income	(328)
Total lease cost	$	14,840

Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from finance leases	$	221
Operating cash flows from operating leases	14,919
Financing cash flows from finance leases	462

Inventories (Details) - USD ($) $ in Thousands	Sep. 30, 2026	Jun. 30, 2026
Inventory Disclosure [Abstract]
Raw materials	$ 870,807	$ 660,487
Work in progress	2,011,383	1,556,956
Finished goods	459,183	363,600
Total inventories	$ 3,341,373	$ 2,581,043

Debt - Senior Notes (Details) - Senior Notes - 5.00% Senior Notes - USD ($) $ in Millions		3 Months Ended
	Dec. 10, 2021	Sep. 30, 2026	Sep. 30, 2025
Debt Instrument [Line Items]
Interest rate on debt	5.00%	5.00%
Aggregate principal amount of bridge loan	$ 990
Interest expense incurred		$ 13	$ 13
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

3 Months Ended

Sep. 30, 2026

Share-Based Payment Arrangement [Abstract]

Share-Based Compensation

Stock Award Plans

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 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.

Share-based compensation expense for the periods indicated was as follows ($000):




	Three Months Ended September 30,
		2026		2025
Stock Options and Cash-Based Stock Appreciation Rights		$	(1,207)	$	549
Restricted Share Awards and Cash-Based Restricted Share Unit Awards		27,744		24,106
Performance Share Awards and Cash-Based Performance Share Unit Awards		43,011		17,215
Employee Stock Purchase Plan		3,622		2,813
		$	73,170	$	44,683

Equity and Redeemable Preferred Stock (Tables)

3 Months Ended

Sep. 30, 2026

Equity [Abstract]

Schedule of Dividends

The following table presents dividends per share and dividends recognized:




	Three Months Ended September 30,
		2026		2025
Dividends per share to preferred shareholders		$	—	$	156
Preferred stock dividends ($000)		—		31,751
Preferred stock deemed dividends ($000)		—		1,728

Revenue from Contracts with Customers - Schedule of Disaggregated Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2026	Sep. 30, 2025
Disaggregation of Revenue [Line Items]
Total Revenues	$ 2,370,324	$ 1,581,378
Datacenter & Communications
Disaggregation of Revenue [Line Items]
Total Revenues	1,951,725	1,090,000
Industrial
Disaggregation of Revenue [Line Items]
Total Revenues	$ 418,599	$ 491,378

- 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 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 5
-Publisher FASB
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Debt - Schedule of Components of Debt (Detail) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2026	Jun. 30, 2026	Dec. 10, 2021
Line of Credit Facility [Line Items]
Total debt	$ 4,000,598	$ 3,222,224
Current portion of long-term debt	(19,887)	(7,916)
Long-term debt, less current portion	$ 3,980,711	3,214,308
Line of credit \| Secured Debt
Line of Credit Facility [Line Items]
Interest rate on debt	1.55%
Debt, gross	$ 13,000
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	1,140,625
Line of credit \| Credit Agreement \| Debt issuance costs, Term A Facility and Revolving Credit Facility
Line of Credit Facility [Line Items]
Debt issuance costs	$ (9,513)	(10,087)
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	1,080,000
Debt issuance costs	(19,609)	(21,228)
Line of credit \| Other Credit Facilities
Line of Credit Facility [Line Items]
Debt, gross	802,793	28,004
Line of credit \| Borrowings on local lines of credit \| Secured Debt
Line of Credit Facility [Line Items]
Debt, gross	6,745	4,791
Line of credit \| Facility construction loan in Germany \| Secured Debt
Line of Credit Facility [Line Items]
Debt, gross	$ 13,235	14,062
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	$ (3,678)	$ (3,943)

Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2026	Sep. 30, 2025
Statement of Comprehensive Income [Abstract]
Net earnings	$ 381,601	$ 225,196
Other Comprehensive Income (Loss):
Foreign currency translation adjustments	80,461	(27,597)
Change in fair value of interest rate instruments, net of taxes of $(240) and $(1,188) for the three months ended September 30, 2026 and 2025, respectively	(877)	(4,388)
Pension adjustment, net of taxes of $— for the three months ended September 30, 2026 and 2025, respectively	811	(756)
Net current-period other comprehensive income (loss)	80,395	(32,741)
Comprehensive Income	461,996	192,455
Comprehensive Loss Attributable to Noncontrolling Interests	(3,072)	(1,153)
Foreign Currency Translation Adjustments Attributable to Noncontrolling Interests	83	(441)
Comprehensive Income Attributable to Coherent Corp.	$ 464,985	$ 194,049

Share-Based Compensation (Tables)

3 Months Ended

Sep. 30, 2026

Share-Based Payment Arrangement [Abstract]

Schedule of Share-Based Compensation Expense

Share-based compensation expense for the periods indicated was as follows ($000):




	Three Months Ended September 30,
		2026		2025
Stock Options and Cash-Based Stock Appreciation Rights		$	(1,207)	$	549
Restricted Share Awards and Cash-Based Restricted Share Unit Awards		27,744		24,106
Performance Share Awards and Cash-Based Performance Share Unit Awards		43,011		17,215
Employee Stock Purchase Plan		3,622		2,813
		$	73,170	$	44,683

Condensed Consolidated Statements of Equity and Mezzanine Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	AOCI	Retained Earnings	Treasury Stock	NCI
Beginning balance, Common Stock (in shares) at Jun. 30, 2025		171,849,000
Balance-beginning of period at Jun. 30, 2025	$ 5,998,022	$ 5,056,168	$ 372,037	$ 584,374	$ (368,065)	$ 353,508
Beginning balance, Treasury Stock, (in shares) at Jun. 30, 2025					(16,294,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based and deferred compensation (in shares)		1,810,000			412,000
Share-based and deferred compensation activities	25,115	$ 62,558			$ (37,443)
Net loss	225,196			226,349		(1,153)
Foreign currency translation adjustments	(27,597)		(27,156)			(441)
Change in fair value of interest rate instruments, net of taxes	(4,388)		(4,388)
Pension adjustment, net of taxes	(756)		(756)
Dividends	(33,479)			(33,479)
Ending balance, Common Stock (in shares) at Sep. 30, 2025		173,659,000
Balance-end of period at Sep. 30, 2025	$ 6,182,113	$ 5,118,726	339,737	777,244	$ (405,508)	351,914
Ending balance, Treasury Stock (in shares) at Sep. 30, 2025					(16,706,000)
Beginning balance (in shares) at Jun. 30, 2025	215,000
Beginning balance at Jun. 30, 2025	$ 2,483,261
Increase (Decrease) in Temporary Equity [Roll Forward]
Dividends	$ 22,041
Ending balance (in shares) at Sep. 30, 2025	215,000
Ending balance at Sep. 30, 2025	$ 2,505,302
Beginning balance, Common Stock (in shares) at Jun. 30, 2026		212,616,000
Balance-beginning of period at Jun. 30, 2026	$ 11,238,200	$ 9,790,596	204,112	1,354,270	$ (445,483)	334,705
Beginning balance, Treasury Stock, (in shares) at Jun. 30, 2026	(16,863,102)				(16,863,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based and deferred compensation (in shares)		1,613,000			435,000
Share-based and deferred compensation activities	$ (38,463)	$ 90,171			$ (128,634)
Net loss	381,601			384,673		(3,072)
Foreign currency translation adjustments	80,461		80,378			83
Change in fair value of interest rate instruments, net of taxes	(877)		(877)
Pension adjustment, net of taxes	811		811
Ending balance, Common Stock (in shares) at Sep. 30, 2026		214,229,000
Balance-end of period at Sep. 30, 2026	$ 11,661,733	$ 9,880,767	$ 284,424	$ 1,738,943	$ (574,117)	$ 331,716
Ending balance, Treasury Stock (in shares) at Sep. 30, 2026	(17,297,839)				(17,298,000)
Beginning balance (in shares) at Jun. 30, 2026	0
Beginning balance at Jun. 30, 2026	$ 0
Ending balance (in shares) at Sep. 30, 2026	0
Ending balance at Sep. 30, 2026	$ 0

Accumulated Other Comprehensive Income (Tables)

3 Months Ended

Sep. 30, 2026

Equity [Abstract]

Schedule of AOCI, Net of Tax

The changes in Accumulated Other Comprehensive Income (“AOCI”) by component, net of tax, for the three months ended September 30, 2026 were as follows ($000):



	Foreign Currency Translation Adjustment		Interest Rate Instruments		Defined Benefit Pension Plan		Total Accumulated Other Comprehensive Income
AOCI - June 30, 2026	$	223,178	$	(7,396)	$	(11,670)	$	204,112
Other comprehensive income before reclassifications	80,461		290		811		81,562
Amounts reclassified from AOCI	—		(1,167)		—		(1,167)
Net current-period other comprehensive income	80,461		(877)		811		80,395
Reclass related to noncontrolling interest	(83)		—		—		(83)
AOCI - September 30, 2026	$	303,556	$	(8,273)	$	(10,859)	$	284,424

Condensed Consolidated Statements of Earnings (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2026	Sep. 30, 2025
Income Statement [Abstract]
Revenues	$ 2,370,324	$ 1,581,378
Costs, Expenses, and Other Expense (Income)
Cost of goods sold	1,442,559	1,002,178
Research and development	236,599	154,877
Selling, general and administrative	304,720	252,084
Restructuring charges	8,580	19,276
Impairment of assets held-for-sale	0	9,100
Gain on sale of business	0	(115,211)
Interest expense	46,330	58,721
Other income, net	(27,218)	(16,533)
Total Costs, Expenses, & Other Expense	2,011,570	1,364,492
Earnings Before Income Taxes	358,754	216,886
Income Tax Benefit	(22,847)	(8,310)
Net Earnings	381,601	225,196
Net Loss Attributable to Noncontrolling Interests	(3,072)	(1,153)
Net Earnings Attributable to Coherent Corp.	384,673	226,349
Less: Dividends on Preferred Stock	0	33,479
Basic earnings available to common shareholders	$ 384,673	$ 192,870
Basic Earnings Per Share (in usd per share)	$ 1.96	$ 1.24
Diluted Earnings Per Share (in usd per share)	$ 1.90	$ 1.19

Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2026	Jun. 30, 2026
Current Assets
Cash and cash equivalents	$ 1,552,929	$ 1,162,018
Restricted cash, current	44,576	35,156
Short-term investments	200,000	825,000
Accounts receivable - less allowance for doubtful accounts of $12,877 at September 30, 2026 and $13,193 at June 30, 2026	1,604,217	1,343,278
Inventories	3,341,373	2,581,043
Prepaid and refundable income taxes	52,453	78,892
Prepaid and other current assets	1,128,718	900,112
Total Current Assets	7,924,266	6,925,499
Property, plant & equipment, net	3,869,814	2,999,343
Goodwill	4,448,341	4,375,597
Other intangible assets, net	2,815,867	2,884,474
Deferred income taxes	90,429	69,434
Restricted cash, non-current	538,838	571,222
Other assets	560,091	474,283
Total Assets	20,247,646	18,299,852
Current Liabilities
Current portion of long-term debt	19,887	7,916
Accounts payable	2,506,431	1,905,357
Accrued compensation and benefits	267,851	358,047
Operating lease current liabilities	68,321	61,371
Accrued income taxes payable	91,443	173,248
Other accrued liabilities	502,704	347,990
Total Current Liabilities	3,456,637	2,853,929
Long-term debt	3,980,711	3,214,308
Deferred income taxes	503,735	540,610
Operating lease liabilities	278,061	254,839
Other liabilities	366,769	197,966
Total Liabilities	8,585,913	7,061,652
Shareholders' Equity
Common stock, no par value; authorized - 300,000,000 shares; issued - 214,229,027 shares at September 30, 2026; 212,615,894 shares at June 30, 2026	9,880,767	9,790,596
Accumulated other comprehensive income (AOCI)	284,424	204,112
Retained earnings	1,738,943	1,354,270
Total Shareholders' Equity	11,904,134	11,348,978
Treasury stock, at cost; 17,297,839 shares at September 30, 2026 and 16,863,102 shares at June 30, 2026	(574,117)	(445,483)
Total Coherent Corp. Shareholders' Equity	11,330,017	10,903,495
Noncontrolling interests (NCI)	331,716	334,705
Total Equity	11,661,733	11,238,200
Total Liabilities and Shareholders' Equity	$ 20,247,646	$ 18,299,852

Debt

3 Months Ended

Sep. 30, 2026

Debt Disclosure [Abstract]

Debt

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


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

Debt issuance costs, Term A Facility and Revolving Credit Facility	(9,513)		(10,087)
Term B Facility, interest at adjusted SOFR, as defined, plus 1.75%	1,080,000		1,080,000
Debt issuance costs, Term B Facility	(19,609)		(21,228)
Other Credit Facilities	802,793		28,004
Borrowings on local lines of credit	6,745		4,791
Facility construction loan in Germany	13,235		14,062
5.00% Senior Notes	990,000		990,000
Debt Issuance costs and discount, Senior Notes	(3,678)		(3,943)
Total debt	4,000,598		3,222,224
Current portion of long-term debt	(19,887)		(7,916)
Long-term debt, less current portion	$	3,980,711	$	3,214,308

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 availability under the 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 1.25% as of September 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 September 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 Condensed Consolidated Statement of Earnings during the three months ended September 30, 2025.

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, of $30 million and $41 million in the three months ended September 30, 2026 and September 30, 2025, respectively, which is included in Interest expense in the Condensed Consolidated Statements of Earnings.

On July 1, 2023, our interest rate cap became effective, which reduced interest expense by $1 million during the three months ended September 30, 2026, and $6 million in the three months ended September 30, 2025. The amortization of debt issuance costs included in interest expense was $2 million in the three months ended September 30, 2026, and $10 million in the three months ended September 30, 2025. Debt issuance costs are presented as a reduction to debt within Long-term debt in the Condensed Consolidated Balance Sheets.

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

The Company had aggregate availability of $669 million under its Revolving Credit Facility as of September 30, 2026.

Debt Assumed through Acquisition

The aggregate principal amount outstanding under a term loan assumed with the closing of the acquisition of Coherent, Inc., is $13 million as of September 30, 2026 and in connection with 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 $13 million in each of the three months ended September 30, 2026 and September 30, 2025, which is included in Interest expense in the Condensed Consolidated Statements of Earnings.

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 September 30, 2026, the Company was in compliance with all covenants under the Indenture.

Other Credit Facilities

In June, July, and August 2026, two wholly-owned foreign subsidiaries of the Company entered into unsecured credit facility agreements with two local lenders providing for aggregate lines of credit of up to $475 million, which is denominated in local currency (the “2026 Credit Lines”). The 2026 Credit Lines mature in 2029 and had $205 million outstanding as of September 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 a guarantor of, the 2026 Credit Lines.

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 $950 million. The facility consists of a local currency tranche with a sublimit equivalent to 475 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, August 17, 2026, and had $598 million outstanding as of September 30, 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 a guarantor of, the August 2026 Facility.

- 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
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477657/942-210-S45-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478478/942-210-S50-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 8
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480657/210-10-S50-8

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(19)(b))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22)(b))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22)(a)(4))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22)(a)(3))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22)(a)(1))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
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+ Details

Restructuring Plans (Tables)

3 Months Ended

Sep. 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 for the first quarter of fiscal 2027 and 2026 ($000):



	Severance		Asset Write-Offs		Other		Total Accrual
Balance - June 30, 2026	$	28,580	$	—	$	—	$	28,580
Restructuring charges	780		1,056		2,354		4,190


Payments	(1,474)		—		—		(1,474)
Asset write-offs and other	135		(1,056)		(2,354)		(3,275)
Balance - September 30, 2026	$	28,021	$	—	$	—	$	28,021



	Severance		Asset Write-Offs		Other		Total Accrual
Balance - June 30, 2025	$	44,230	$	—	$	—	$	44,230
Restructuring charges	1,237		—		5,268		6,505


Payments	(2,292)		—		—		(2,292)
Asset write-offs and other	1,060		—		(5,268)		(4,208)
Balance - September 30, 2025	$	44,235	$	—	$	—	$	44,235

Activity and accrual balances for the 2025 Plan were as follows for the first quarter of fiscal 2027 and 2026 ($000):



	Severance		Asset Write-Offs		Other		Total Accrual
Balance - June 30, 2026	$	22,531	$	9,774	$	12,231	$	44,536
Restructuring charges	3,149		98		1,143		4,390
Payments	(3,317)		—		—		(3,317)
Asset write-offs and other	(175)		(615)		(1,833)		(2,623)
Balance - September 30, 2026	$	22,189	$	9,257	$	11,541	$	42,987



	Severance		Asset Write-Offs		Other		Total Accrual
Balance - June 30, 2025	$	16,722	$	10,494	$	19,897	$	47,113
Restructuring charges	10,871		423		1,477		12,771
Payments	(5,356)		—		—		(5,356)
Asset write-offs and other	(433)		(1,143)		(6,575)		(8,151)
Balance - September 30, 2025	$	21,804	$	9,774	$	14,799	$	46,377

Leases - Schedule of Lease Costs (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2026	Sep. 30, 2025
Finance lease cost
Interest on lease liabilities	$ 194	$ 221
Total finance lease cost	194	221
Operating lease cost	22,123	14,947
Sublease income	(474)	(328)
Total lease cost	21,843	14,840
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from finance leases	194	221
Operating cash flows from operating leases	20,423	14,919
Financing cash flows from finance leases	$ 508	$ 462
Weighted-average remaining lease term (in years)
Finance leases	5 years 3 months 18 days
Operating leases	6 years 2 months 12 days
Weighted-average discount rate
Finance leases	5.60%
Operating leases	5.70%

Restructuring Plans - Schedule of Components and Restructuring Charges and Payments (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2026	Sep. 30, 2025
Restructuring Reserve [Roll Forward]
Restructuring charges	$ 8,580	$ 19,276
2023 Plan
Restructuring Reserve [Roll Forward]
Beginning Balance	28,580	44,230
Restructuring charges	4,190	6,505
Payments	(1,474)	(2,292)
Asset write-offs and other	(3,275)	(4,208)
Ending Balance	28,021	44,235
2023 Plan \| Severance
Restructuring Reserve [Roll Forward]
Beginning Balance	28,580	44,230
Restructuring charges	780	1,237
Payments	(1,474)	(2,292)
Asset write-offs and other	135	1,060
Ending Balance	28,021	44,235
2023 Plan \| Asset Write-Offs
Restructuring Reserve [Roll Forward]
Beginning Balance	0	0
Restructuring charges	1,056	0
Payments	0	0
Asset write-offs and other	(1,056)	0
Ending Balance	0	0
2023 Plan \| Other
Restructuring Reserve [Roll Forward]
Beginning Balance	0	0
Restructuring charges	2,354	5,268
Payments	0	0
Asset write-offs and other	(2,354)	(5,268)
Ending Balance	0	0
2025 Plan
Restructuring Reserve [Roll Forward]
Beginning Balance	44,536	47,113
Restructuring charges	4,390	12,771
Payments	(3,317)	(5,356)
Asset write-offs and other	(2,623)	(8,151)
Ending Balance	42,987	46,377
2025 Plan \| Severance
Restructuring Reserve [Roll Forward]
Beginning Balance	22,531	16,722
Restructuring charges	3,149	10,871
Payments	(3,317)	(5,356)
Asset write-offs and other	(175)	(433)
Ending Balance	22,189	21,804
2025 Plan \| Asset Write-Offs
Restructuring Reserve [Roll Forward]
Beginning Balance	9,774	10,494
Restructuring charges	98	423
Payments	0	0
Asset write-offs and other	(615)	(1,143)
Ending Balance	9,257	9,774
2025 Plan \| Other
Restructuring Reserve [Roll Forward]
Beginning Balance	12,231	19,897
Restructuring charges	1,143	1,477
Payments	0	0
Asset write-offs and other	(1,833)	(6,575)
Ending Balance	$ 11,541	$ 14,799

Revenue from Contracts with Customers - Additional Information (Details) $ in Millions	3 Months Ended
	Sep. 30, 2026 USD ($) segment	Jun. 30, 2026 USD ($)
Revenue from Contract with Customer [Abstract]
Number of reporting segments \| segment	2
Revenue recognized related to customer payments	$ 15
Contract liabilities	333
Contract liabilities included in other accrued liabilities	172	$ 48
Contract liabilities included within other liabilities	$ 161	$ 15

Fair Value of Financial Instruments - Schedule of Fair Value and Carrying Value of Debt Facilities (Details) - Fair Value, Inputs, Level 2 - USD ($) $ in Thousands	Sep. 30, 2026	Jun. 30, 2026
Fair Value \| Senior Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt facilities	$ 948,489	$ 974,437
Fair Value \| Term A Facility
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt facilities	1,146,328	1,142,051
Fair Value \| Term B Facility
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt facilities	1,084,730	1,082,030
Carrying Value \| Senior Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt facilities	986,322	986,057
Carrying Value \| Term A Facility
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt facilities	1,135,197	1,134,859
Carrying Value \| Term B Facility
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt facilities	$ 1,060,391	$ 1,058,772

- 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.

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+ Details

Equity and Redeemable Preferred Stock - Schedule of Dividends Recognized (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Sep. 30, 2026	Sep. 30, 2025
Class of Stock [Line Items]
Preferred stock dividends ($000)	$ 0	$ 33,479
Convertible Preferred Stock
Class of Stock [Line Items]
Dividends per share to preferred shareholders (in usd per share)	$ 0	$ 156
Preferred stock dividends ($000)	$ 0	$ 31,751
Preferred stock deemed dividends ($000)	$ 0	$ 1,728

- 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.

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+ Details

Goodwill and Other Intangible Assets - Schedule of Gross Carrying Amount and Accumulated Amortization of Intangible Assets Other Than Goodwill (Details) - USD ($) $ in Thousands	Sep. 30, 2026	Jun. 30, 2026
Intangible Asset, Finite-Lived [Line Items]
Gross Carrying Amount	$ 4,415,056	$ 4,411,842
Accumulated Amortization	(1,599,189)	(1,527,368)
Net Book Value	2,815,867	2,884,474
Technology
Intangible Asset, Finite-Lived [Line Items]
Gross Carrying Amount	1,505,282	1,505,754
Accumulated Amortization	(629,241)	(601,358)
Net Book Value	876,041	904,396
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	2,385,930	2,384,730
Accumulated Amortization	(876,104)	(834,652)
Net Book Value	1,509,826	1,550,078
Backlog and Other
Intangible Asset, Finite-Lived [Line Items]
Gross Carrying Amount	85,373	82,887
Accumulated Amortization	(85,373)	(82,887)
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

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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) - Disposal Group, Held-for-Sale, Not Discontinued Operations - Various Coherent Entities - USD ($) $ in Thousands	Sep. 30, 2026	Jun. 30, 2026
Disposal Group, Including Discontinued Operations [Line Items]
Accounts receivable	$ 828	$ 628
Inventories	31,912	31,755
Prepaid and refundable income taxes	142	119
Prepaid and other current assets	3,071	3,127
Less: Impairment of assets held-for-sale	(17,502)	(7,015)
Total current assets held-for-sale	18,451	28,614
Property, plant & equipment, net	21,333	21,286
Goodwill	3,624	3,624
Other assets	1,833	12,368
Less: Impairment of assets held-for-sale	(26,790)	(37,278)
Total noncurrent assets held-for-sale	0	0
Accounts payable	3,816	3,328
Accrued compensation and benefits	3,204	3,289
Operating lease current liabilities	788	387
Accrued income taxes payable	413	(510)
Other accrued liabilities	4,476	4,512
Total current liabilities held-for-sale	12,697	11,006
Operating lease liabilities	980	1,076
Other liabilities	1,314	1,318
Total noncurrent liabilities held-for-sale	$ 2,294	$ 2,394

Contingencies	3 Months Ended
Contingencies	Sep. 30, 2026
Commitments and Contingencies Disclosure [Abstract]
Contingencies	Contingencies 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 Administration 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.

Earnings Per Share (Tables)

3 Months Ended

Sep. 30, 2026

Earnings Per Share [Abstract]

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

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




	Three Months Ended September 30,
		2026		2025
Numerator
Net earnings attributable to Coherent Corp.		$	384,673	$	226,349


Deduct Series B dividends and deemed dividends		—		(33,479)
Basic earnings available to common shareholders		$	384,673	$	192,870

Effect of dilutive securities:


Add back Series B preferred stock dividends		$	—	$	31,751
Add back Series B deemed dividends		—		1,728
Diluted earnings available to common shareholders		$	384,673	$	226,349

Denominator
Weighted average shares		196,213		156,156
Effect of dilutive securities:
Common stock equivalents		5,813		4,644


Series B Convertible Preferred Stock		—		29,884
Diluted weighted average common shares		202,026		190,684

Basic earnings per common share		$	1.96	$	1.24

Diluted earnings per common share		$	1.90	$	1.19

Basis of Presentation	3 Months Ended
Basis of Presentation	Sep. 30, 2026
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation Basis of Presentation The condensed consolidated financial statements of Coherent Corp. (“Coherent”, the “Company”, “we”, “us” or “our”) for the three months ended September 30, 2026 and 2025 are unaudited. In the opinion of management, all adjustments considered necessary for a fair presentation for the periods presented have been included. All adjustments are of a normal recurring nature unless disclosed otherwise. Certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) have been condensed or omitted. These condensed consolidated financial statements should be read in conjunction with the audited financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended June 30, 2026 filed with the Securities and Exchange Commission (the “SEC”) on August 14, 2026. The condensed consolidated results of operations for the three months ended September 30, 2026 are not necessarily indicative of the results to be expected for the full fiscal year. The Condensed Consolidated Balance Sheet information as of June 30, 2026 was derived from the Company’s audited consolidated financial statements.

Equity and Redeemable Preferred Stock

3 Months Ended

Sep. 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 were subject to a contractual lock-up for a period of six months following the closing date, during which NVIDIA could 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 included a price protection provision that was 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 was indexed to the Company’s own stock and met the criteria for equity classification. Accordingly, the price protection provision was not accounted for as a derivative liability and no separate fair value measurement was required subsequent to issuance. Any potential issuance of additional shares or cash settlement pursuant to the price protection provision, if triggered, would have been accounted for as an adjustment to equity. The price protection provision expired in September 2026 without being triggered. Accordingly, no additional shares were issued and no cash settlement was required.

Preferred stock

As of September 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 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 or September 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 Common Stock as follows:

•at the election of the holder, each share of Series B Preferred Stock could have been converted into shares of 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 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 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 were presented as a reduction to Retained earnings on the Condensed 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 quarters after September 30, 2025.

The following table presents dividends per share and dividends recognized:




	Three Months Ended September 30,
		2026		2025
Dividends per share to preferred shareholders		$	—	$	156
Preferred stock dividends ($000)		—		31,751
Preferred stock deemed dividends ($000)		—		1,728

- Definition

The entire disclosure for equity.

+ References

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+ Details

Fair Value of Financial Instruments

3 Months Ended

Sep. 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 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 $2 million and $3 million is recognized in the Condensed Consolidated Balance Sheet within Prepaid and other current assets as of September 30, 2026 and June 30, 2026, respectively. Cash flows from hedging activities are reported in the Condensed 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 September 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):



	September 30, 2026				June 30, 2026
	Fair Value		Carrying Value		Fair Value		Carrying Value
Senior Notes	$	948,489	$	986,322	$	974,437	$	986,057
Term A Facility	1,146,328		1,135,197		1,142,051		1,134,859
Term B Facility	1,084,730		1,060,391		1,082,030		1,058,772

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 September 30, 2026 and June 30, 2026, time deposits of $200 million and $825 million, respectively, with maturities of one year or less, are recorded in Short-term investments on the Condensed 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 September 30, 2026, total restricted cash was $583 million, which includes $581 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, 2026, total restricted cash was $606 million, which includes $604 million of cash 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. 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 Condensed 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 and no contracts at September 30, 2026. 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 gains related to these contracts for the three months ended September 30, 2026 and September 30, 2025 were $0.2 million and zero, respectively, and were included in Other income, net in the Condensed Consolidated Statements of Earnings.

- 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
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+ Details

Segment Reporting - Schedule of Financial Information by Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2026	Sep. 30, 2025
Segment Reporting [Line Items]
Revenues	$ 2,370,324	$ 1,581,378
Segment cost of goods sold and operating expenses	2,011,570	1,364,492
Segment profit	630,428	385,923
Share-based compensation	(73,170)	(44,683)
Restructuring costs	(8,580)	(19,276)
Impairment of assets held-for-sale	0	(9,100)
Interest expense	(46,330)	(58,721)
Gain on sale of business	0	115,211
Other income (expense), net	27,218	16,533
Earnings Before Income Taxes	358,754	216,886
Consulting and legal costs related to projects to integrate recent acquisitions	21,000	22,000
Datacenter & Communications
Segment Reporting [Line Items]
Revenues	1,951,725	1,090,000
Industrial
Segment Reporting [Line Items]
Revenues	418,599	491,378
Operating Segments
Segment Reporting [Line Items]
Revenues	2,370,324	1,581,378
Segment cost of goods sold and operating expenses	1,792,189	1,225,474
Operating Segments \| Datacenter & Communications
Segment Reporting [Line Items]
Revenues	1,951,725	1,090,000
Segment cost of goods sold and operating expenses	1,464,688	829,883
Segment profit	508,683	269,294
Operating Segments \| Industrial
Segment Reporting [Line Items]
Revenues	418,599	491,378
Segment cost of goods sold and operating expenses	327,501	395,591
Segment profit	121,745	116,629
Impairment of assets held-for-sale	(64,000)
Intersegment
Segment Reporting [Line Items]
Revenues	(52,293)	(30,020)
Intersegment \| Datacenter & Communications
Segment Reporting [Line Items]
Revenues	(21,646)	(9,178)
Intersegment \| Industrial
Segment Reporting [Line Items]
Revenues	(30,647)	(20,842)
Corporate Segment
Segment Reporting [Line Items]
Corporate and centralized function costs	(80,170)	(77,343)
Share-based compensation	(73,170)	(44,683)
Restructuring costs	(8,580)	(19,276)
Impairment of assets held-for-sale	0	(9,100)
Integration, site consolidation and other costs	(21,191)	(22,212)
Amortization of intangibles	(69,451)	(69,446)
Interest expense	(46,330)	(58,721)
Gain on sale of business	0	115,211
Other income (expense), net	$ 27,218	$ 16,533

Restructuring Plans

3 Months Ended

Sep. 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 three months ended September 30, 2026, these activities resulted in net charges of $4 million, primarily for asset write-offs, site closure and employee termination costs. In the three months ended September 30, 2025, these activities resulted in $7 million of net charges primarily for site closure and employee termination costs.

Activity and accrual balances for the 2023 Plan were as follows for the first quarter of fiscal 2027 and 2026 ($000):



	Severance		Asset Write-Offs		Other		Total Accrual
Balance - June 30, 2026	$	28,580	$	—	$	—	$	28,580
Restructuring charges	780		1,056		2,354		4,190


Payments	(1,474)		—		—		(1,474)
Asset write-offs and other	135		(1,056)		(2,354)		(3,275)
Balance - September 30, 2026	$	28,021	$	—	$	—	$	28,021



	Severance		Asset Write-Offs		Other		Total Accrual
Balance - June 30, 2025	$	44,230	$	—	$	—	$	44,230
Restructuring charges	1,237		—		5,268		6,505


Payments	(2,292)		—		—		(2,292)
Asset write-offs and other	1,060		—		(5,268)		(4,208)
Balance - September 30, 2025	$	44,235	$	—	$	—	$	44,235

At September 30, 2026, $5 million and $23 million of accrued severance related costs were included in other accrued liabilities and other liabilities on our Condensed 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 three months ended September 30, 2026 restructuring costs were not material in any segment. For the three months ended September 30, 2025, restructuring costs were primarily incurred in the Datacenter & Communications segment. Restructuring charges (recoveries) are recorded in Restructuring charges in our Condensed Consolidated Statements of Earnings.

2025 Restructuring Plan

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

For the three months ended September 30, 2026, these activities resulted in net restructuring charges of $4 million primarily related to employee termination and site closure costs. For the three months ended September 30, 2025, these activities resulted in restructuring charges of $13 million primarily related to employee termination and site closure costs. 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 for the first quarter of fiscal 2027 and 2026 ($000):



	Severance		Asset Write-Offs		Other		Total Accrual
Balance - June 30, 2026	$	22,531	$	9,774	$	12,231	$	44,536
Restructuring charges	3,149		98		1,143		4,390
Payments	(3,317)		—		—		(3,317)
Asset write-offs and other	(175)		(615)		(1,833)		(2,623)
Balance - September 30, 2026	$	22,189	$	9,257	$	11,541	$	42,987



	Severance		Asset Write-Offs		Other		Total Accrual
Balance - June 30, 2025	$	16,722	$	10,494	$	19,897	$	47,113
Restructuring charges	10,871		423		1,477		12,771
Payments	(5,356)		—		—		(5,356)
Asset write-offs and other	(433)		(1,143)		(6,575)		(8,151)
Balance - September 30, 2025	$	21,804	$	9,774	$	14,799	$	46,377

At September 30, 2026, $22 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 September 30, 2026, total liabilities for asset write-offs and other contract costs of $11 million and $10 million were included in other accrued liabilities and other liabilities, respectively, on our Condensed Consolidated Balance Sheet.

For the three months ended September 30, 2026, restructuring charges were incurred primarily in the Industrial segment and Corporate. For the three months ended September 30, 2025, restructuring charges were primarily incurred in Corporate.

Insider Trading Arrangements	3 Months Ended
Insider Trading Arrangements	Sep. 30, 2026 shares
Trading Arrangements, by Individual
Material Terms of Trading Arrangement	On September 15, 2026, Sherri Luther, the Company’s Chief Financial Officer, entered into a 10b5-1 trading arrangement (the “10b5-1 Plan”) for the sale of 8,956 shares of the Company’s common stock, and the potential sale of a portion of the net shares of the Company’s common stock resulting from the vesting of various performance share and restricted share award vesting during 2027. The 10b5-1 Plan, scheduled to commence on January 14, 2027, is intended to satisfy the affirmative defense of Rule 10b5-1(c) and will terminate on December 31, 2027.
Name	Sherri Luther
Title	Company’s Chief Financial Officer
Rule 10b5-1 Arrangement Adopted	true
Non-Rule 10b5-1 Arrangement Adopted	false
Adoption Date	September 15, 2026
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false
Expiration Date	December 31, 2027
Arrangement Duration	351 days
Aggregate Available	8,956

Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended
Income Taxes (Details) - USD ($) $ in Millions	Sep. 30, 2026	Sep. 30, 2025	Jun. 30, 2026
Income Tax Disclosure [Abstract]
Effective income tax rate, percent	(6.00%)	(4.00%)
Taxes at statutory rate	21.00%
Gross unrecognized tax benefit	$ 64		$ 64
Gross unrecognized tax benefits that would impact effective tax rate	32
Interest and penalties accrued	$ 6		$ 5

Goodwill and Other Intangible Assets

3 Months Ended

Sep. 30, 2026

Intangible Asset, Goodwill and Other [Abstract]

Goodwill and Other Intangible Assets

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



	Three Months Ended September 30, 2026
	Datacenter & Communications		Industrial		Total
Balance-beginning of period	$	1,150,400	$	3,225,197	$	4,375,597
Other reclassifications(1)	141,400		(141,400)		—
Foreign currency translation	1,340		71,404		72,744
Balance-end of period	$	1,293,140	$	3,155,201	$	4,448,341

(1) Other reclassifications include the transfer of $141 million of goodwill from the Industrial segment to the Datacenter & Communications segment related to the movement of certain business units effective as of the first day of fiscal 2027. Goodwill was reallocated using a relative fair value approach. As a result of the transfer between reportable segments, the Company performed an impairment assessment immediately before and immediately after the transfer became effective, and no impairment of goodwill was identified. See Note 18. Segment Reporting for further information.

We test goodwill for impairment annually during the fourth quarter of our fiscal year, or more frequently when events or changes in circumstances indicate that fair value is below carrying value.

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



	September 30, 2026						June 30, 2026
	Gross Carrying Amount		Accumulated Amortization		Net Book Value		Gross Carrying Amount		Accumulated Amortization		Net Book Value
Technology	$	1,505,282	$	(629,241)	$	876,041	$	1,505,754	$	(601,358)	$	904,396
Trade Names	438,471		(8,471)		430,000		438,471		(8,471)		430,000
Customer Lists	2,385,930		(876,104)		1,509,826		2,384,730		(834,652)		1,550,078
Backlog and Other	85,373		(85,373)		—		82,887		(82,887)		—
Total	$	4,415,056	$	(1,599,189)	$	2,815,867	$	4,411,842	$	(1,527,368)	$	2,884,474

Inventories (Tables)

3 Months Ended

Sep. 30, 2026

Inventory Disclosure [Abstract]

Schedule of Components of Inventories

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




	September 30, 2026		June 30, 2026
Raw materials	$	870,807	$	660,487
Work in progress	2,011,383		1,556,956
Finished goods	459,183		363,600
Total inventories	$	3,341,373	$	2,581,043

Fair Value of Financial Instruments (Tables)

3 Months Ended

Sep. 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):



	September 30, 2026				June 30, 2026
	Fair Value		Carrying Value		Fair Value		Carrying Value
Senior Notes	$	948,489	$	986,322	$	974,437	$	986,057
Term A Facility	1,146,328		1,135,197		1,142,051		1,134,859
Term B Facility	1,084,730		1,060,391		1,082,030		1,058,772

Noncontrolling Interests

3 Months Ended

Sep. 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):




	Three Months Ended September 30,
	2026		2025
Balance-beginning of period	$	334,705	$	353,508

Share of foreign currency translation adjustments	83		(441)
Net loss	(3,072)		(1,153)
Balance-end of period	$	331,716	$	351,914

Revenue from Contracts with Customers (Tables)

3 Months Ended

Sep. 30, 2026

Revenue from Contract with Customer [Abstract]

Schedule of Disaggregated Revenue

The following table summarizes disaggregated revenue by market ($000):




	Three Months Ended September 30,
Markets		2026		2025
Datacenter & Communications		$	1,951,725	$	1,090,000
Industrial		418,599		491,378
Total Revenues		$	2,370,324	$	1,581,378

Debt (Tables)

3 Months Ended

Sep. 30, 2026

Debt Disclosure [Abstract]

Schedule of Components of Debt

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


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

Debt issuance costs, Term A Facility and Revolving Credit Facility	(9,513)		(10,087)
Term B Facility, interest at adjusted SOFR, as defined, plus 1.75%	1,080,000		1,080,000
Debt issuance costs, Term B Facility	(19,609)		(21,228)
Other Credit Facilities	802,793		28,004
Borrowings on local lines of credit	6,745		4,791
Facility construction loan in Germany	13,235		14,062
5.00% Senior Notes	990,000		990,000
Debt Issuance costs and discount, Senior Notes	(3,678)		(3,943)
Total debt	4,000,598		3,222,224
Current portion of long-term debt	(19,887)		(7,916)
Long-term debt, less current portion	$	3,980,711	$	3,214,308

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

3 Months Ended

Sep. 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 September 30, 2026 and June 30, 2026 are as follows ($000):



	September 30, 2026		June 30, 2026

Accounts receivable	$	828	$	628
Inventories	31,912		31,755
Prepaid and refundable income taxes	142		119
Prepaid and other current assets	3,071		3,127
Less: Impairment of assets held-for-sale	(17,502)		(7,015)
Total current assets held-for-sale	$	18,451	$	28,614

Property, plant & equipment, net	$	21,333	$	21,286
Goodwill	3,624		3,624

Other assets	1,833		12,368
Less: Impairment of assets held-for-sale	(26,790)		(37,278)
Total noncurrent assets held-for-sale	$	—	$	—

Accounts payable	$	3,816	$	3,328
Accrued compensation and benefits	3,204		3,289
Operating lease current liabilities	788		387
Accrued income taxes payable	413		(510)
Other accrued liabilities	4,476		4,512
Total current liabilities held-for-sale	$	12,697	$	11,006


Operating lease liabilities	$	980	$	1,076


Other liabilities	1,314		1,318
Total noncurrent liabilities held-for-sale	$	2,294	$	2,394

- 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.

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

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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+ Details

Segment Reporting

3 Months Ended

Sep. 30, 2026

Segment Reporting [Abstract]

Segment 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. The Company 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.

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.

As part of the Company’s annual business planning, the CODM reviews our reportable segment composition and financial performance. As a result of this review, effective July 1, 2026, we moved certain business units across reportable segments. Prior period segment information has not been recast, as the changes to our segment composition did not have a material impact on the operating results of our reportable segments.

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





	Three Months Ended September 30,
		2026		2025
Segment revenue
Datacenter & Communications		$	1,951,725	$	1,090,000
Industrial		418,599		491,378
Total segment revenue		2,370,324		1,581,378

Intersegment revenue
Datacenter & Communications		21,646		9,178
Industrial		30,647		20,842
Elimination of intersegment revenue		(52,293)		(30,020)
Total intersegment revenue		—		—

Segment cost of goods sold and operating expenses (1)
Datacenter & Communications		1,464,688		829,883
Industrial		327,501		395,591
Total segment cost of goods sold and operating expenses		1,792,189		1,225,474

Segment profit
Datacenter & Communications		508,683		269,294
Industrial		121,745		116,629
Total segment profit		630,428		385,923

Unallocated Corporate expenses
Corporate and centralized function costs (2)		(80,170)		(77,343)
Share-based compensation		(73,170)		(44,683)
Restructuring costs (3)		(8,580)		(19,276)
Impairment of assets held-for-sale		—		(9,100)
Integration, site consolidation and other costs (4)		(21,191)		(22,212)
Amortization of intangibles		(69,451)		(69,446)
Interest expense		(46,330)		(58,721)


Gain on sale of business		—		115,211
Other income (expense), net		27,218		16,533

Earnings before income taxes		$	358,754	$	216,886

(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 10. Restructuring Plans for further information.

(4)Integration, site consolidation and other costs are $21 million and $22 million in the three months ended September 30, 2026 and 2025, respectively, primarily consisting of consulting and legal costs related to initiatives to integrate recent acquisitions into common technology systems, to divest businesses and simplify legal entity structure.

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





	Three Months Ended September 30,
		2026		2025
North America		$	1,593,865	$	1,002,164
Europe		269,711		191,699
China		305,075		177,669
Japan		88,273		116,324
Rest of World		113,400		93,522
Total		$	2,370,324	$	1,581,378

- Definition

The entire disclosure for segment reporting.

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

Assets Held-for-Sale and Sale of Businesses - Additional Information (Details) - USD ($) $ in Thousands		3 Months Ended
	Jan. 30, 2026	Sep. 30, 2026	Dec. 31, 2025	Sep. 30, 2025	Jun. 30, 2025	Sep. 02, 2025
Long-Lived Asset, Held-for-Sale [Line Items]
Gain on sale of business		$ 0		$ 115,211
Impairment of assets held-for-sale		0		9,100
Operating Segments \| Industrial
Long-Lived Asset, Held-for-Sale [Line Items]
Impairment of assets held-for-sale		64,000
Product Division Based in Munich, Germany
Long-Lived Asset, Held-for-Sale [Line Items]
Gain on sale of business		115,000
Impairment of assets held-for-sale			$ 11,000	$ 13,000	$ 81,000
Disposal Group, Disposed of by Sale, Not Discontinued Operations \| Aerospace and Defense Business
Long-Lived Asset, Held-for-Sale [Line Items]
Proceeds from sale of equity investment						$ 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]
Total loss on sale	$ 96,000
Impairment of assets held-for-sale	$ 105,000
Discontinued Operation, Gain (Loss) on Disposal, Statement of Income or Comprehensive Income [Extensible Enumeration]	Impairment of assets held-for-sale

Share-Based Compensation - Additional Information (Details) - Employee Stock Purchase Plan	3 Months Ended
	Sep. 30, 2026
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
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

- 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

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+ Details

Restructuring Plans - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2026	Sep. 30, 2025
Restructuring Cost and Reserve [Line Items]
Restructuring charges (recoveries)	$ 8,580	$ 19,276
2023 Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges (recoveries)	4,190	6,505
2023 Plan \| Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring charges (recoveries)	780	1,237
Restructuring accrual, current	5,000
Restructuring accrual, noncurrent	23,000
2023 Plan \| Asset Write-Offs
Restructuring Cost and Reserve [Line Items]
Restructuring charges (recoveries)	1,056	0
2025 Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges (recoveries)	4,390	12,771
2025 Plan \| Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring charges (recoveries)	3,149	10,871
Restructuring accrual, current	22,000
2025 Plan \| Asset Write-Offs
Restructuring Cost and Reserve [Line Items]
Restructuring charges (recoveries)	98	$ 423
Restructuring accrual, current	11,000
Restructuring accrual, noncurrent	$ 10,000

- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ 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

Noncontrolling Interests (Tables)

3 Months Ended

Sep. 30, 2026

Noncontrolling Interest [Abstract]

Schedule of Noncontrolling Interests

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




	Three Months Ended September 30,
	2026		2025
Balance-beginning of period	$	334,705	$	353,508

Share of foreign currency translation adjustments	83		(441)
Net loss	(3,072)		(1,153)
Balance-end of period	$	331,716	$	351,914

Goodwill and Other Intangible Assets (Tables)

3 Months Ended

Sep. 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):



	Three Months Ended September 30, 2026
	Datacenter & Communications		Industrial		Total
Balance-beginning of period	$	1,150,400	$	3,225,197	$	4,375,597
Other reclassifications(1)	141,400		(141,400)		—
Foreign currency translation	1,340		71,404		72,744
Balance-end of period	$	1,293,140	$	3,155,201	$	4,448,341

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):



	September 30, 2026						June 30, 2026
	Gross Carrying Amount		Accumulated Amortization		Net Book Value		Gross Carrying Amount		Accumulated Amortization		Net Book Value
Technology	$	1,505,282	$	(629,241)	$	876,041	$	1,505,754	$	(601,358)	$	904,396
Trade Names	438,471		(8,471)		430,000		438,471		(8,471)		430,000
Customer Lists	2,385,930		(876,104)		1,509,826		2,384,730		(834,652)		1,550,078
Backlog and Other	85,373		(85,373)		—		82,887		(82,887)		—
Total	$	4,415,056	$	(1,599,189)	$	2,815,867	$	4,411,842	$	(1,527,368)	$	2,884,474

- 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)
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Reference 2: http://www.xbrl.org/2003/role/exampleRef
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+ Details

Cover - shares	3 Months Ended
Cover - shares	Sep. 30, 2026	Nov. 02, 2026
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2026
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 Boulevard
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 Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		196,958,669
Amendment Flag	false
Document Fiscal Year Focus	2026
Document Fiscal Period Focus	Q1
Entity Central Index Key	0000820318
Current Fiscal Year End Date	--06-30

Fair Value of Financial Instruments - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Jun. 30, 2026	Sep. 01, 2024	Aug. 31, 2024	Feb. 23, 2022
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	$ 200.0		$ 825.0
Restricted cash, current	583.0		606.0
Fair Value, Inputs, Level 1 \| Silicon Carbide
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted cash, current	581.0		604.0
Fair Value, Inputs, Level 1 \| Other Entities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted cash, current	2.0		2.0
Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Realized gains on derivatives	0.2	$ 0.0
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				$ 1,500.0	$ 500.0
Derivative asset	$ 2.0		$ 3.0

Leases (Tables)

3 Months Ended

Sep. 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, remaining lease terms, and discount rates ($000):



	Three Months Ended September 30, 2026
Finance lease cost

Interest on lease liabilities	$	194
Total finance lease cost	194
Operating lease cost	22,123
Sublease income	(474)
Total lease cost	$	21,843

Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from finance leases	$	194
Operating cash flows from operating leases	20,423
Financing cash flows from finance leases	508

Weighted-average remaining lease term (in years)
Finance leases	5.3
Operating leases	6.2

Weighted-average discount rate
Finance leases	5.6		%
Operating leases	5.7		%



	Three Months Ended September 30, 2025
Finance lease cost

Interest on lease liabilities	$	221
Total finance lease cost	221
Operating lease cost	14,947
Sublease income	(328)
Total lease cost	$	14,840

Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from finance leases	$	221
Operating cash flows from operating leases	14,919
Financing cash flows from finance leases	462

Segment Reporting (Tables)

3 Months Ended

Sep. 30, 2026

Segment Reporting [Abstract]

Schedule of Financial Information by Segment

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





	Three Months Ended September 30,
		2026		2025
Segment revenue
Datacenter & Communications		$	1,951,725	$	1,090,000
Industrial		418,599		491,378
Total segment revenue		2,370,324		1,581,378

Intersegment revenue
Datacenter & Communications		21,646		9,178
Industrial		30,647		20,842
Elimination of intersegment revenue		(52,293)		(30,020)
Total intersegment revenue		—		—

Segment cost of goods sold and operating expenses (1)
Datacenter & Communications		1,464,688		829,883
Industrial		327,501		395,591
Total segment cost of goods sold and operating expenses		1,792,189		1,225,474

Segment profit
Datacenter & Communications		508,683		269,294
Industrial		121,745		116,629
Total segment profit		630,428		385,923

Unallocated Corporate expenses
Corporate and centralized function costs (2)		(80,170)		(77,343)
Share-based compensation		(73,170)		(44,683)
Restructuring costs (3)		(8,580)		(19,276)
Impairment of assets held-for-sale		—		(9,100)
Integration, site consolidation and other costs (4)		(21,191)		(22,212)
Amortization of intangibles		(69,451)		(69,446)
Interest expense		(46,330)		(58,721)


Gain on sale of business		—		115,211
Other income (expense), net		27,218		16,533

Earnings before income taxes		$	358,754	$	216,886

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

(3)See Note 10. Restructuring Plans for further information.

Schedule of Geographic Information

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





	Three Months Ended September 30,
		2026		2025
North America		$	1,593,865	$	1,002,164
Europe		269,711		191,699
China		305,075		177,669
Japan		88,273		116,324
Rest of World		113,400		93,522
Total		$	2,370,324	$	1,581,378

- 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
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-Paragraph 31
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Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
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+ Details

Recently Issued Financial Accounting Standards	3 Months Ended
Recently Issued Financial Accounting Standards	Sep. 30, 2026
Accounting Policies [Abstract]
Recently Issued Financial Accounting Standards	Recently Issued Financial Accounting StandardsIn 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
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+ Details

Basis of Presentation (Policies)	3 Months Ended
Basis of Presentation (Policies)	Sep. 30, 2026
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The condensed consolidated financial statements of Coherent Corp. (“Coherent”, the “Company”, “we”, “us” or “our”) for the three months ended September 30, 2026 and 2025 are unaudited. In the opinion of management, all adjustments considered necessary for a fair presentation for the periods presented have been included. All adjustments are of a normal recurring nature unless disclosed otherwise. Certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) have been condensed or omitted. These condensed consolidated financial statements should be read in conjunction with the audited financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended June 30, 2026 filed with the Securities and Exchange Commission (the “SEC”) on August 14, 2026. The condensed consolidated results of operations for the three months ended September 30, 2026 are not necessarily indicative of the results to be expected for the full fiscal year. The Condensed Consolidated Balance Sheet information as of June 30, 2026 was derived from the Company’s audited consolidated financial statements.
Recently Issued Financial Accounting Standards	Recently Issued Financial Accounting StandardsIn 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.

Equity and Redeemable Preferred Stock - Additional Information (Details) $ / shares in Units, $ in Millions			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	Dec. 31, 2025 shares	Jun. 30, 2026 USD ($) shares	Sep. 30, 2026 shares	Sep. 30, 2025 shares	Jun. 30, 2025 shares
Class of Stock [Line Items]
Preferred stock, shares authorized (in shares)						5,000,000
Redeemable convertible preferred stock shares outstanding (in shares)					0	0	215,000	215,000
Conversion of Series A preferred stock \| $					$ 2,500
Common Stock
Class of Stock [Line Items]
Conversion of Series B preferred stock (in shares)				30,100,000
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
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
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
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
Convertible Preferred Stock
Class of Stock [Line Items]
Redeemable convertible preferred stock shares outstanding (in shares)						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
Convertible Preferred Stock \| Private Placement
Class of Stock [Line Items]
Proceeds from common stock and preferred stock options exercised in full \| $		$ 1,400

Debt - Other Credit Facilities (Details) - USD ($) $ in Millions		3 Months Ended
	Aug. 12, 2026	Sep. 30, 2026	Aug. 30, 2026
August 2026 Facility \| Unsecured Debt
Line of Credit Facility [Line Items]
Aggregate amount of credit facility	$ 950
Outstanding balance		$ 598
Term of loan	36 months
August 2026 Facility, Local Currency Tranche \| Unsecured Debt
Line of Credit Facility [Line Items]
Aggregate amount of credit facility	$ 475
August 2026 Facility, Local Currency Tranche \| Unsecured Debt \| Local Currency Benchmark Rate
Line of Credit Facility [Line Items]
Basis spread on variable rate	(0.71%)
August 2026 Facility, U.S. Dollar Tranche \| Unsecured Debt
Line of Credit Facility [Line Items]
Aggregate amount of credit facility	$ 475
August 2026 Facility, U.S. Dollar Tranche \| Unsecured Debt \| Secured Overnight Financing Rate (SOFR)
Line of Credit Facility [Line Items]
Basis spread on variable rate	0.20%
Foreign Line of Credit \| June 2026 Credit Line \| Line of credit
Line of Credit Facility [Line Items]
Aggregate amount of credit facility			$ 475
Foreign Line of Credit \| June 2026 Facility \| Line of credit
Line of Credit Facility [Line Items]
Outstanding balance		$ 205
Basis spread on variable rate		(6100.00%)

Inventories

3 Months Ended

Sep. 30, 2026

Inventory Disclosure [Abstract]

Inventories

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




	September 30, 2026		June 30, 2026
Raw materials	$	870,807	$	660,487
Work in progress	2,011,383		1,556,956
Finished goods	459,183		363,600
Total inventories	$	3,341,373	$	2,581,043

Debt - Debt Assumed Through Acquisition (Details) - Secured Debt - Line of credit $ in Millions	Sep. 30, 2026 USD ($)
Debt Instrument [Line Items]
Total	$ 13
Interest rate on debt	1.55%

- 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

Earnings Per Share - Schedule of Reconciliation of Basic and Diluted of Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Sep. 30, 2026	Sep. 30, 2025
Numerator
Net earnings attributable to Coherent Corp.	$ 384,673	$ 226,349
Basic earnings available to common shareholders	384,673	192,870
Effect of dilutive securities:
Diluted earnings available to common shareholders	$ 384,673	$ 226,349
Denominator
Weighted average shares, basic (in shares)	196,213	156,156
Effect of dilutive securities:
Common stock equivalents (in shares)	5,813	4,644
Series B Convertible Preferred Stock (in shares)	0	29,884
Diluted weighted average common shares (in shares)	202,026	190,684
Basic Earnings Per Share (in usd per share)	$ 1.96	$ 1.24
Diluted Earnings Per Share (in usd per share)	$ 1.90	$ 1.19
Convertible Preferred Stock
Numerator
Deduct Series B dividends and deemed dividends	$ 0	$ (33,479)
Preferred Stock Dividends
Effect of dilutive securities:
Add back Series B preferred stock dividends	0	31,751
Deemed Dividends
Effect of dilutive securities:
Add back Series B preferred stock dividends	$ 0	$ 1,728

Earnings Per Share

3 Months Ended

Sep. 30, 2026

Earnings Per Share [Abstract]

Earnings Per Share

Basic earnings 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 per common share is computed by dividing the diluted earnings 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 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 three months ended September 30, 2026 and September 30, 2025, diluted shares outstanding include the dilutive effect of the potential shares of Common Stock issuable from performance and restricted shares.

For the three months ended September 30, 2025, diluted earnings per share also included the potentially dilutive effect of the shares of Common Stock issuable upon conversion of the Series B Preferred Stock (under the If-Converted method), as their effects were dilutive.

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




	Three Months Ended September 30,
		2026		2025
Numerator
Net earnings attributable to Coherent Corp.		$	384,673	$	226,349


Deduct Series B dividends and deemed dividends		—		(33,479)
Basic earnings available to common shareholders		$	384,673	$	192,870

Effect of dilutive securities:


Add back Series B preferred stock dividends		$	—	$	31,751
Add back Series B deemed dividends		—		1,728
Diluted earnings available to common shareholders		$	384,673	$	226,349

Denominator
Weighted average shares		196,213		156,156
Effect of dilutive securities:
Common stock equivalents		5,813		4,644


Series B Convertible Preferred Stock		—		29,884
Diluted weighted average common shares		202,026		190,684

Basic earnings per common share		$	1.96	$	1.24

Diluted earnings per common share		$	1.90	$	1.19

Property, Plant and Equipment (Tables)

3 Months Ended

Sep. 30, 2026

Property, Plant, and Equipment [Abstract]

Schedule of Property, Plant and Equipment

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




	September 30, 2026		June 30, 2026
Land and improvements	$	59,674	$	58,996
Buildings and improvements	1,048,462		1,030,787
Machinery and equipment	3,364,992		2,916,096
Construction in progress	1,259,141		776,511

	5,732,269		4,782,390
Less accumulated depreciation	(1,862,455)		(1,783,047)
Property, plant and equipment, net	$	3,869,814	$	2,999,343

Income Taxes	3 Months Ended
Income Taxes	Sep. 30, 2026
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The Company’s fiscal year-to-date effective income tax rate was a benefit of 6% at September 30, 2026 compared to a benefit of 4% for the same period in the prior fiscal year. The variance from the U.S. statutory federal income tax rate of 21% was primarily driven by differences between U.S. and foreign tax rates and discrete tax benefits related to return to provision adjustments, excess tax benefits associated with stock-based compensation, and a change to the permanent reinvestment assertion in China. U.S. GAAP prescribes the accounting for uncertainty in income taxes recognized in an enterprise’s financial statements which includes a recognition threshold and measurement attribute for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return. As of September 30, 2026 and June 30, 2026, the Company’s gross unrecognized tax benefit, excluding interest and penalties, was $64 million and $64 million, 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. As of September 30, 2026, $32 million of the gross unrecognized tax benefit would impact the effective tax rate if recognized. The Company recognizes interest and penalties related to uncertain tax positions in the income tax provision in the Condensed Consolidated Statements of Earnings. The amount of accrued interest and penalties included in the gross unrecognized income tax benefit was $6 million and $5 million at September 30, 2026 and June 30, 2026, respectively. 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, 2018 through June 30, 2021; Singapore for the years ended June 30, 2021 through June 30, 2024; United Kingdom for the years ended June 30, 2022 through June 30, 2024; Germany for the years ended September 30, 2012 through June 30, 2024; and Netherlands for the years ended June 30, 2018 through June 30, 2020. The Company believes its income tax reserves for these tax matters are adequate.

- Definition

The entire disclosure for income tax.

+ References

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-Name Accounting Standards Codification
-Section 50
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+ Details

Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2026	Sep. 30, 2025
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance-beginning of period	$ 11,238,200	$ 5,998,022
Net current-period other comprehensive income (loss)	80,395	(32,741)
Balance-end of period	11,661,733	6,182,113
Total Accumulated Other Comprehensive Income
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance-beginning of period	204,112	372,037
Other comprehensive income before reclassifications	81,562
Amounts reclassified from AOCI	(1,167)
Net current-period other comprehensive income (loss)	80,395
Reclass related to noncontrolling interest	(83)
Balance-end of period	284,424	$ 339,737
Foreign Currency Translation Adjustment
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance-beginning of period	223,178
Other comprehensive income before reclassifications	80,461
Amounts reclassified from AOCI	0
Net current-period other comprehensive income (loss)	80,461
Reclass related to noncontrolling interest	(83)
Balance-end of period	303,556
Interest Rate Instruments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance-beginning of period	(7,396)
Other comprehensive income before reclassifications	290
Amounts reclassified from AOCI	(1,167)
Net current-period other comprehensive income (loss)	(877)
Reclass related to noncontrolling interest	0
Balance-end of period	(8,273)
Defined Benefit Pension Plan
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance-beginning of period	(11,670)
Other comprehensive income before reclassifications	811
Amounts reclassified from AOCI	0
Net current-period other comprehensive income (loss)	811
Reclass related to noncontrolling interest	0
Balance-end of period	$ (10,859)

Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2026	Jun. 30, 2026
Statement of Financial Position [Abstract]
Accounts receivable, allowance for doubtful accounts	$ 12,877	$ 13,193
Common stock, shares authorized (in shares)	300,000,000	300,000,000
Common stock, shares issued (in shares)	214,229,027	212,615,894
Treasury stock (in shares)	17,297,839	16,863,102

Share-Based Compensation - Schedule of Share-Based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2026	Sep. 30, 2025
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense	$ 73,170	$ 44,683
Stock Options and Cash-Based Stock Appreciation Rights
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense	(1,207)	549
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	27,744	24,106
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	43,011	17,215
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense	$ 3,622	$ 2,813

- 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

Accumulated Other Comprehensive Income

3 Months Ended

Sep. 30, 2026

Equity [Abstract]

Accumulated Other Comprehensive Income

The changes in Accumulated Other Comprehensive Income (“AOCI”) by component, net of tax, for the three months ended September 30, 2026 were as follows ($000):



	Foreign Currency Translation Adjustment		Interest Rate Instruments		Defined Benefit Pension Plan		Total Accumulated Other Comprehensive Income
AOCI - June 30, 2026	$	223,178	$	(7,396)	$	(11,670)	$	204,112
Other comprehensive income before reclassifications	80,461		290		811		81,562
Amounts reclassified from AOCI	—		(1,167)		—		(1,167)
Net current-period other comprehensive income	80,461		(877)		811		80,395
Reclass related to noncontrolling interest	(83)		—		—		(83)
AOCI - September 30, 2026	$	303,556	$	(8,273)	$	(10,859)	$	284,424

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2026	Sep. 30, 2025
Cash Flows from Operating Activities
Net earnings	$ 381,601	$ 225,196
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation	77,665	52,983
Amortization	69,451	69,446
Share-based compensation expense	74,377	44,134
Non-cash restructuring and impairment charges	1,154	9,872
Amortization of debt issuance costs	2,458	9,786
Loss on disposals of property, plant & equipment	1,006	127
Unrealized gains on foreign currency remeasurements and transactions	(999)	(4,226)
Earnings from equity investments	(211)	(215)
Deferred income taxes	(55,657)	(83,665)
Gain on sale of business	0	(115,211)
Gain on sale of equity investment	0	(6,726)
Loss on debt extinguishment	0	3,056
Increase (decrease) in cash from changes in:
Accounts receivable	(255,278)	(66,628)
Inventories	(737,082)	(219,120)
Accounts payable	429,824	105,357
Contract liabilities	269,276	(8,022)
Income taxes	(32,959)	37,221
Accrued compensation and benefits	(90,196)	(48,206)
Other operating net assets (liabilities)	(227,111)	40,796
Net cash provided by (used in) operating activities	(92,681)	45,955
Cash Flows from Investing Activities
Additions to property, plant & equipment	(775,547)	(103,946)
Proceeds from sale of equity investment	0	9,635
Proceeds from the sale of business, net of fees	0	391,127
Proceeds from sales/maturities of short-term investments	625,000	0
Other investing activities	(50,368)	(18)
Net cash provided by (used in) investing activities	(200,915)	296,798
Cash Flows from Financing Activities
Proceeds from borrowings of revolving credit facilities	11,660	88,908
Proceeds from borrowings of other credit facilities	773,355	0
Payments on existing debt	(779)	(1,650,805)
Payments on borrowings under revolving credit facilities	(9,835)	(77,046)
Debt issuance costs	0	(8,542)
Proceeds from exercises of stock options and purchases of stock under employee stock purchase plan	19,416	21,278
Payments in satisfaction of employees’ minimum tax obligations	(128,633)	(37,443)
Cash dividends paid	0	(11,438)
Other financing activities	(572)	335
Net cash provided by (used in) financing activities	664,612	(421,486)
Effect of exchange rate changes on cash, cash equivalents, and restricted cash	(3,069)	(1,280)
Net increase (decrease) in cash, cash equivalents, and restricted cash	367,947	(80,013)
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period	1,768,396	1,632,913
Cash, Cash Equivalents, and Restricted Cash at End of Period	2,136,343	1,552,900
Supplemental Information
Cash paid for interest	29,398	40,996
Cash paid for income taxes	65,183	49,375
Non-Cash Investing and Financing Activities:
Additions to property, plant & equipment included in accounts payable	527,734	71,647
Reconciliation of Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents
Cash and cash equivalents	1,552,929	852,778
Restricted cash, current	44,576	22,549
Restricted cash, non-current	538,838	677,573
Total cash, cash equivalents, and restricted cash shown in the Condensed Consolidated Statements of Cash Flows	2,136,343	1,552,900
Term A Loan
Cash Flows from Financing Activities
Proceeds from borrowing of credit facility	0	1,250,000
Term B Loan
Cash Flows from Financing Activities
Proceeds from borrowing of credit facility	$ 0	$ 3,267

Property, Plant and Equipment

3 Months Ended

Sep. 30, 2026

Property, Plant, and Equipment [Abstract]

Property, Plant and Equipment

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




	September 30, 2026		June 30, 2026
Land and improvements	$	59,674	$	58,996
Buildings and improvements	1,048,462		1,030,787
Machinery and equipment	3,364,992		2,916,096
Construction in progress	1,259,141		776,511

	5,732,269		4,782,390
Less accumulated depreciation	(1,862,455)		(1,783,047)
Property, plant and equipment, net	$	3,869,814	$	2,999,343

- 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