Coherent (COHR) 10-Q6 Nov 242025 Q1 Quarterly reportFinancial data

Company Profile

Cover

Cover - shares	3 Months Ended
Cover - shares	Sep. 30, 2024	Nov. 04, 2024
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2024
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		154,663,982
Amendment Flag	false
Document Fiscal Year Focus	2025
Document Fiscal Period Focus	Q1
Entity Central Index Key	0000820318
Current Fiscal Year End Date	--06-30

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2024	Jun. 30, 2024
Current Assets
Cash and cash equivalents	$ 1,019,648	$ 926,033
Restricted cash, current	51,417	174,008
Accounts receivable - less allowance for doubtful accounts of $8,625 at September 30, 2024 and $9,511 at June 30, 2024	819,712	848,542
Inventories	1,386,149	1,286,404
Prepaid and refundable income taxes	25,245	26,909
Prepaid and other current assets	328,116	398,203
Total Current Assets	3,630,287	3,660,099
Property, plant & equipment, net	1,875,314	1,817,259
Goodwill	4,595,643	4,464,329
Other intangible assets, net	3,514,687	3,503,247
Deferred income taxes	53,550	40,966
Restricted cash, non-current	711,393	689,645
Other assets	318,426	313,089
Total Assets	14,699,300	14,488,634
Current Liabilities
Current portion of long-term debt	69,928	73,770
Accounts payable	689,672	631,548
Accrued compensation and benefits	196,993	212,458
Operating lease current liabilities	41,890	40,580
Accrued income taxes payable	101,829	90,705
Other accrued liabilities	257,678	294,706
Total Current Liabilities	1,357,990	1,343,767
Long-term debt	3,918,841	4,026,448
Deferred income taxes	751,138	784,374
Operating lease liabilities	176,442	162,355
Other liabilities	226,290	225,411
Total Liabilities	6,430,701	6,542,355
Mezzanine Equity
Series B redeemable convertible preferred stock, no par value, 5% cumulative; issued - 215,000 shares at September 30, 2024 and June 30, 2024; redemption value - $2,458,208 and $2,427,860, respectively	2,396,605	2,364,772
Shareholders' Equity
Common stock, no par value; authorized - 300,000,000 shares; issued - 170,543,560 shares at September 30, 2024; 168,406,323 shares at June 30, 2024	4,913,672	4,857,657
Accumulated other comprehensive income (AOCI)	273,453	2,640
Retained earnings	658,997	664,940
Shareholders' equity excluding treasury stock	5,846,122	5,525,237
Treasury stock, at cost; 16,027,905 shares at September 30, 2024 and 15,626,740 shares at June 30, 2024	(345,045)	(315,122)
Total Coherent Corp. Shareholders’ Equity	5,501,077	5,210,115
Noncontrolling interests (NCI)	370,917	371,392
Total Equity	5,871,994	5,581,507
Total Liabilities, Mezzanine Equity and Equity	$ 14,699,300	$ 14,488,634

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Sep. 30, 2024	Jun. 30, 2024
Statement of Financial Position [Abstract]
Accounts receivable, allowance for doubtful accounts	$ 8,625	$ 9,511
Redeemable convertible preferred stock, par value (in usd per share)	$ 0	$ 0
Redeemable convertible preferred stock, cumulative percentage	5%	5%
Redeemable convertible preferred stock, shares issued (in shares)	215,000	215,000
Redeemable convertible preferred stock redemption value	$ 2,458,208	$ 2,427,860
Common stock, no par value (in usd per share)	$ 0	$ 0
Common stock, shares authorized (in shares)	300,000,000	300,000,000
Common stock, shares issued (in shares)	170,543,560	168,406,323
Treasury stock (in shares)	16,027,905	15,626,740

Condensed Consolidated Statemen

Condensed Consolidated Statements of Earnings (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Income Statement [Abstract]
Revenues	$ 1,348,135	$ 1,053,083
Costs, Expenses, and Other Expense (Income)
Cost of goods sold	888,003	746,188
Research and development	131,602	113,488
Selling, general and administrative	228,968	211,697
Restructuring charges	24,364	3,018
Interest expense	66,644	73,258
Other income, net	(10,749)	(6,269)
Total Costs, Expenses, & Other Expense	1,328,832	1,141,380
Earnings (Loss) Before Income Taxes	19,303	(88,297)
Income Tax Benefit	(5,558)	(20,763)
Net Earnings (Loss)	24,861	(67,534)
Net Loss Attributable to Noncontrolling Interests	(1,026)	0
Net Earnings (Loss) Attributable to Coherent Corp.	25,887	(67,534)
Less: Dividends on Preferred Stock	31,833	30,173
Net Loss Available to the Common Shareholders	$ (5,946)	$ (97,707)
Basic Loss Per Share (in usd per share)	$ (0.04)	$ (0.65)
Diluted Loss Per Share (in usd per share)	$ (0.04)	$ (0.65)

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Net Earnings (Loss)	$ 24,861	$ (67,534)
Other Comprehensive Income (Loss):
Foreign currency translation adjustments	290,274	(107,903)
Pension adjustment, net of taxes	(155)	291
Comprehensive Income (Loss)	296,225	(172,208)
Comprehensive Loss Attributable to Noncontrolling Interests	(1,026)	0
Foreign Currency Translation Adjustments Attributable to Noncontrolling Interests	551	0
Comprehensive Income (Loss) Attributable to Coherent Corp.	296,700	(172,208)
Interest Rate Swap
Other Comprehensive Income (Loss):
Change in fair value of interest rate swap and interest rate cap, net of taxes	3,401	(4,662)
Interest Rate Cap
Other Comprehensive Income (Loss):
Change in fair value of interest rate swap and interest rate cap, net of taxes	$ (22,156)	$ 7,600

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Pension adjustment, taxes	$ 0	$ 0
Interest Rate Swap
Change in fair value of interest rate swap and interest rate cap, taxes	1,671	(1,277)
Interest Rate Cap
Change in fair value of interest rate swap and interest rate cap, taxes	$ (6,068)	$ 2,145

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Cash Flows from Operating Activities
Net earnings (loss)	$ 24,861	$ (67,534)
Adjustments to reconcile net earnings (loss) to net cash provided by operating activities:
Depreciation	65,882	65,698
Amortization	71,862	72,661
Share-based compensation expense	34,960	45,957
Amortization of debt issuance costs	5,484	3,567
Non-cash restructuring charges	18,352	319
Loss on disposal of property, plant and equipment	(22)	(101)
Unrealized losses (gains) on foreign currency remeasurements and transactions	21,491	(14,462)
Loss (earnings) from equity investments	(392)	243
Deferred income taxes	(42,655)	(39,627)
Increase (decrease) in cash from changes in (net of effect of acquisitions):
Accounts receivable	22,583	116,295
Inventories	(54,781)	(16,709)
Accounts payable	44,644	41,985
Contract liabilities	(9,273)	(9,769)
Income taxes	(13,606)	(2,806)
Accrued compensation and benefits	(15,465)	7,482
Other operating net assets (liabilities)	(20,945)	(4,396)
Net cash provided by operating activities	152,980	198,803
Cash Flows from Investing Activities
Additions to property, plant & equipment	(91,984)	(62,197)
Proceeds from the sale of business	27,000	0
Other investing activities	(750)	(1,978)
Net cash used in investing activities	(65,734)	(64,175)
Cash Flows from Financing Activities
Payments on existing debt	(117,859)	(18,683)
Proceeds from exercises of stock options and purchases of stock under employee stock purchase plan	24,405	14,947
Payments in satisfaction of employees' minimum tax obligations	(31,990)	(13,876)
Other financing activities	(219)	(268)
Net cash used in financing activities	(125,663)	(17,880)
Effect of exchange rate changes on cash, cash equivalents, and restricted cash	31,189	(9,458)
Net increase (decrease) in cash, cash equivalents, and restricted cash	(7,228)	107,290
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period	1,789,686	837,566
Cash, Cash Equivalents, and Restricted Cash at End of Period	1,782,458	944,856
Supplemental Information
Cash paid for interest	63,434	67,320
Cash paid for income taxes	33,899	14,810
Additions to property, plant & equipment included in accounts payable	60,050	39,264
Non-Cash Investing and Financing Activities
Conversion of Series A preferred stock to common stock	0	445,319
Reconciliation of Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents
Cash and cash equivalents	1,019,648	935,221
Restricted cash, current	51,417	5,860
Restricted cash, non-current	711,393	3,775
Total cash, cash equivalents, and restricted cash shown in the Condensed Consolidated Statements of Cash Flows	$ 1,782,458	$ 944,856

Condensed Consolidated Statem_5

Condensed Consolidated Statements of Equity and Mezzanine Equity (Unaudited) - USD ($) $ in Thousands	Total	Interest Rate Swap	Interest Rate Cap	Conversion Of Preferred Stock	Common Stock	Common Stock Conversion Of Preferred Stock	Preferred Stock	Preferred Stock Conversion Of Preferred Stock	AOCI	AOCI Interest Rate Swap	AOCI Interest Rate Cap	Retained Earnings	Treasury Stock	NCI
Beginning balance, Common Stock (in shares) at Jun. 30, 2023					154,721,000
Balance-beginning of period at Jun. 30, 2023	$ 4,987,551				$ 3,781,211		$ 445,319		$ 109,726			$ 944,416	$ (293,121)	$ 0
Beginning balance, Preferred Stock (in shares) at Jun. 30, 2023							2,300,000
Beginning balance, Treasury Stock, (in shares) at Jun. 30, 2023													(15,137,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based and deferred compensation (in shares)					1,804,000								366,000
Share-based and deferred compensation	46,816				$ 60,748								$ (13,932)
Conversion of stock and securities (in shares)						10,240,000		(2,300,000)
Conversion of stock and securities				$ 0		$ 445,319		$ (445,319)
Net earnings (loss)	(67,534)											(67,534)
Foreign currency translation adjustments	(107,903)								(107,903)
Change in fair value of interest rate swap and interest rate cap, net of taxes		$ (4,662)	$ 7,600							$ (4,662)	$ 7,600
Pension adjustment, net of taxes	291								291
Dividends	(30,173)											(30,173)
Ending balance, Common Stock (in shares) at Sep. 30, 2023					166,765,000
Balance-end of period at Sep. 30, 2023	$ 4,831,986				$ 4,287,278		$ 0		5,052			846,709	$ (307,053)	0
Ending balance, Preferred Stock (in shares) at Sep. 30, 2023							0
Ending balance, Treasury Stock (in shares) at Sep. 30, 2023													(15,503,000)
Beginning balance (in shares) at Jun. 30, 2023	215,000
Beginning balance at Jun. 30, 2023	$ 2,241,415
Increase (Decrease) in Temporary Equity [Roll Forward]
Dividends	$ 30,173
Ending balance (in shares) at Sep. 30, 2023	215,000
Ending balance at Sep. 30, 2023	$ 2,271,588
Beginning balance, Common Stock (in shares) at Jun. 30, 2024					168,408,000
Balance-beginning of period at Jun. 30, 2024	$ 5,581,507				$ 4,857,657		$ 0		2,640			664,940	$ (315,122)	371,392
Beginning balance, Preferred Stock (in shares) at Jun. 30, 2024							0
Beginning balance, Treasury Stock, (in shares) at Jun. 30, 2024	(15,626,740)												(15,629,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based and deferred compensation (in shares)					2,136,000								399,000
Share-based and deferred compensation	$ 26,095				$ 56,015							3	$ (29,923)
Net earnings (loss)	24,861											25,887		(1,026)
Foreign currency translation adjustments	290,274								289,723					551
Change in fair value of interest rate swap and interest rate cap, net of taxes		$ 3,401	$ (22,156)							$ 3,401	$ (22,156)
Pension adjustment, net of taxes	(155)								(155)
Dividends	(31,833)											(31,833)
Ending balance, Common Stock (in shares) at Sep. 30, 2024					170,544,000
Balance-end of period at Sep. 30, 2024	$ 5,871,994				$ 4,913,672		$ 0		$ 273,453			$ 658,997	$ (345,045)	$ 370,917
Ending balance, Preferred Stock (in shares) at Sep. 30, 2024							0
Ending balance, Treasury Stock (in shares) at Sep. 30, 2024	(16,027,905)												(16,028,000)
Beginning balance (in shares) at Jun. 30, 2024	215,000
Beginning balance at Jun. 30, 2024	$ 2,364,772
Increase (Decrease) in Temporary Equity [Roll Forward]
Dividends	$ 31,833
Ending balance (in shares) at Sep. 30, 2024	215,000
Ending balance at Sep. 30, 2024	$ 2,396,605

Condensed Consolidated Statem_6

Condensed Consolidated Statements of Equity and Mezzanine Equity (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Pension adjustment, taxes	$ 0	$ 0
Interest Rate Swap
Change in fair value of interest rate swap and interest rate cap, taxes	1,671	(1,277)
Interest Rate Cap
Change in fair value of interest rate swap and interest rate cap, taxes	$ (6,068)	$ 2,145

Basis of Presentation

Basis of Presentation	3 Months Ended
Basis of Presentation	Sep. 30, 2024
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, 2024 and 2023 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 dated August 16, 2024. The condensed consolidated results of operations for the three months ended September 30, 2024 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, 2024 was derived from the Company’s audited consolidated financial statements.

Recently Issued Financial Accou

Recently Issued Financial Accounting Standards	3 Months Ended
Recently Issued Financial Accounting Standards	Sep. 30, 2024
Accounting Policies [Abstract]
Recently Issued Financial Accounting Standards	Recently Issued Financial Accounting Standards In November 2023, the FASB issued Accounting Standards Update (“ASU”) 2023-07 - Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures. This ASU improves reportable segment disclosure requirements, primarily through enhanced disclosures about significant segment expenses. This ASU is effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024. Early adoption is permitted. The Company is evaluating the impact this will have on the Company’s consolidated financial statements and disclosures. In December 2023, the FASB issued ASU 2023-09, “Income Taxes (Topic 740): Improvements to Income Tax Disclosures” (“ASU 2023-09”). ASU 2023-09 includes amendments that further enhance income tax disclosures, primarily through standardization and disaggregation of rate reconciliation categories and income taxes paid by jurisdiction. ASU 2023-09 is effective for annual periods beginning after December 15, 2024, on either a prospective or retrospective basis. Early adoption is permitted. The Company is currently evaluating the impact of ASU 2023-09 on its consolidated financial statements and related disclosures. In March 2024, the Securities and Exchange Commission (the “SEC”) issued the final rule under SEC Release No. 33-11275 and 34-99678, “The Enhancement and Standardization of Climate-Related Disclosures for Investors,” requiring public companies to provide certain climate-related information in their registration statements and annual reports. The final rules will require information about a company’s climate-related risks that have materially impacted or are reasonably likely to have a material impact on its business strategy, results of operations, or financial condition, and the actual and potential material impacts of any identified climate-related risks on the company’s strategy, business model and outlook, as well as relating to assessment, management, oversight and mitigation of such material risks, material climate-related targets and goals, and material greenhouse gas emissions. Additionally, certain disclosures related to severe weather events and other natural conditions will be required in the audited financial statements. The first phase of the final rule is effective for fiscal years beginning in 2025. Disclosure for prior periods is only required if it was previously disclosed in an SEC filing. On April 4, 2024, the SEC voluntarily stayed implementation of the final rule to facilitate the orderly judicial resolution of pending legal challenges to the rule. We are currently evaluating the impact on our disclosures of adopting this new pronouncement.

Revenue from Contracts with Cus

Revenue from Contracts with Customers	3 Months Ended
Revenue from Contracts with Customers	Sep. 30, 2024
Revenue from Contract with Customer [Abstract]
Revenue from Contracts with Customers	Revenue from Contracts with Customers We believe that disaggregating revenue by end market provides the most relevant information regarding the nature, amount, timing, and uncertainty of revenues and cash flows. The following tables summarize disaggregated revenue by market ($000): Three Months Ended September 30, 2024 Networking Materials Lasers Total Industrial $ 14,380 $ 119,646 $ 272,914 $ 406,940 Communications 739,156 35,135 — 774,291 Electronics 2,171 74,057 — 76,228 Instrumentation 7,165 8,589 74,922 90,676 Total Revenues $ 762,872 $ 237,427 $ 347,836 $ 1,348,135 Three Months Ended September 30, 2023 Networking Materials Lasers Total Industrial $ 15,965 $ 133,203 $ 255,166 $ 404,334 Communications 446,274 13,252 — 459,526 Electronics 1,724 88,065 — 89,789 Instrumentation 8,886 10,120 80,428 99,434 Total Revenues $ 472,849 $ 244,640 $ 335,594 $ 1,053,083 Contract Liabilities

Inventories

Inventories	3 Months Ended
Inventories	Sep. 30, 2024
Inventory Disclosure [Abstract]
Inventories	Inventories The components of inventories were as follows ($000): September 30, June 30, Raw materials $ 385,422 $ 429,888 Work in progress 736,432 620,575 Finished goods 264,295 235,941 Total inventories $ 1,386,149 $ 1,286,404

Property, Plant and Equipment

Property, Plant and Equipment	3 Months Ended
Property, Plant and Equipment	Sep. 30, 2024
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	Property, Plant and Equipment Property, plant and equipment consists of the following ($000): September 30, June 30, Land and improvements $ 67,572 $ 66,156 Buildings and improvements 793,950 774,991 Machinery and equipment 2,111,407 2,034,310 Construction in progress 440,674 398,884 Finance lease right-of-use asset 25,000 25,000 3,438,603 3,299,341 Less accumulated depreciation and amortization (1,563,289) (1,482,082) Property, plant, and equipment, net $ 1,875,314 $ 1,817,259

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	3 Months Ended
Goodwill and Other Intangible Assets	Sep. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets Changes in the carrying amount of goodwill were as follows ($000): Three Months Ended September 30, 2024 Networking Materials Lasers Total Balance-beginning of period $ 1,036,592 $ 245,983 $ 3,181,754 $ 4,464,329 Foreign currency translation 1,900 2,778 126,636 131,314 Balance-end of period $ 1,038,492 $ 248,761 $ 3,308,390 $ 4,595,643 We test goodwill for impairment annually during the fourth quarter, 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, 2024 June 30, 2024 Gross Accumulated Net Gross Accumulated Net Book Value Technology $ 1,685,122 $ (430,328) $ 1,254,794 $ 1,653,289 $ (394,040) $ 1,259,249 Trade Names 438,470 (8,470) 430,000 438,470 (8,470) 430,000 Customer Lists 2,377,951 (549,878) 1,828,073 2,310,550 (498,252) 1,812,298 Backlog and Other 91,732 (89,912) 1,820 88,792 (87,092) 1,700 Total $ 4,593,275 $ (1,078,588) $ 3,514,687 $ 4,491,101 $ (987,854) $ 3,503,247

Debt

Debt	3 Months Ended
Debt	Sep. 30, 2024
Debt Disclosure [Abstract]
Debt	Debt The components of debt as of the dates indicated were as follows ($000): September 30, June 30, Term A Facility, interest at adjusted SOFR, as defined, plus 1.850% $ 765,000 $ 775,625 Debt issuance costs, Term A Facility and Revolving Credit Facility (12,456) (13,586) Term B Facility, interest at adjusted SOFR, as defined, plus 2.500% 2,274,803 2,384,536 Debt issuance costs, Term B Facility (42,075) (49,835) 1.30% Term loan — 335 Facility construction loan in Germany 19,196 19,082 5.000% Senior Notes 990,000 990,000 Debt issuance costs and discount, Senior Notes (5,699) (5,939) Total debt 3,988,769 4,100,218 Current portion of long-term debt (69,928) (73,770) Long-term debt, less current portion $ 3,918,841 $ 4,026,448 Senior Credit Facilities On July 1, 2022 (the “Closing Date”), Coherent entered into a 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 provides for senior secured financing of $4.0 billion, consisting of a term loan A credit facility (the “Term A Facility”), 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”), with an aggregate principal amount of $2,800 million, and a revolving credit facility (the “Revolving Credit Facility”), in an aggregate available amount of $350 million, including a letter of credit sub-facility of up to $50 million. 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. As amended, the Term A Facility and the Revolving Credit Facility each bear interest at an adjusted SOFR rate subject to a 0.10% floor plus a range of 1.75% to 2.50%, based on the Company’s total net leverage ratio. The Term A Facility and the Revolving Credit Facility borrowings bear interest at adjusted SOFR plus 1.85% as of September 30, 2024. 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. As further amended, the New Term B Loans bear interest at a SOFR rate (subject to a 0.50% floor) plus 2.50% as of September 30, 2024. The maturity of the New Term Loans and revolving credit facility remains unchanged. Debt extinguishment costs related to the replacement of the Existing Term B Loans of $2 million were expensed in Other income, net in the Condensed Consolidated Statement of Earnings (Loss) during the quarter ended June 30, 2024. In relation to the Term Facilities, the Company incurred interest expense, including amortization of debt issuance costs and the benefit of the interest rate cap and swap, of $53 million and $57 million in the three months ended September 30, 2024 and September 30, 2023, respectively, which is included in Interest expense in the Condensed Consolidated Statements of Earnings (Loss). On July 1, 2023, our interest rate cap became effective, which together with our interest rate swap, reduced interest expense by $13 million and $11 million during the three months ended September 30, 2024 and September 30, 2023, respectively. The amortization of debt issuance costs included in interest expense was $5 million and $3 million in the three months ended September 30, 2024 and September 30, 2023, respectively. Debt issuance costs are presented as a reduction to debt within the Long-term debt caption in the Condensed Consolidated Balance Sheets. 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. As of September 30, 2024, the Company was in compliance with all covenants under the Term Facilities. Debt Assumed through Acquisition We assumed the remaining balances of three term loans with the closing of the acquisition of Coherent, Inc. The aggregate principal amount outstanding is $19 million as of September 30, 2024. The term loans assumed consisted of the following: (i) 1.3% Term Loan (repaid prior to September 30, 2024), (ii) 1.0% State of Connecticut Term Loan due 2023 (repaid in fiscal 2023), and (iii) Facility construction loan in Germany. For the Facility construction loan, on December 21, 2020, Coherent LaserSystems GmbH & Co. KG entered into a loan agreement with Commerzbank for borrowings of up to 24 million Euros, which were drawn down by October 29, 2021, to finance a portion of the construction of a new facility in Germany. The term of the loan is 10 years, and borrowings bear 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 . On or after 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 may 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, at any time and from time to time prior to December 15, 2024, the Company may 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. In relation to the Senior Notes, the Company incurred interest expense of $13 million in both the three months ended September 30, 2024 and September 30, 2023, which is included in Interest expense in the Condensed Consolidated Statements of Earnings (Loss). The Indenture contains customary covenants and events of default, including default relating to, among other things, payment default, failure to comply with covenants or agreements contained in the Indenture or the Senior Notes and certain provisions related to bankruptcy events. As of September 30, 2024, the Company was in compliance with all covenants under the Indenture. Aggregate Availability The Company had aggregate availability of $320 million under its Revolving Credit Facility as of September 30, 2024.

Income Taxes

Income Taxes	3 Months Ended
Income Taxes	Sep. 30, 2024
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The Company’s year-to-date effective income tax rate was (29)% at September 30, 2024 compared to 24% for the period ending September 30, 2023. The difference between the Company’s effective tax rate and the U.S. statutory rate of 21% is primarily due to a discrete benefit relating to share-based compensation and tax rate differentials between U.S. and foreign jurisdictions. 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, 2024 and June 30, 2024, the Company’s gross unrecognized tax benefit, excluding interest and penalties, was $115 million and $117 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. Due to the U.S. valuation allowance, a large portion of the gross unrecognized tax benefit will not impact the tax rate if recognized. As of September 30, 2024, $19 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 (Loss). The amount of accrued interest and penalties included in the gross unrecognized income tax benefit was $8 million and $7 million at September 30, 2024 and June 30, 2024, respectively. Fiscal years 2018 and 2020 to 2023 remain open to examination by the Internal Revenue Service, fiscal years 2019 to 2023 remain open to examination by certain state jurisdictions, and fiscal years 2012 to 2023 remain open to examination by certain foreign taxing jurisdictions. The Company is currently under examination for certain subsidiary companies in Vietnam for the years ended June 30, 2017 through September 30, 2021; Singapore for the year ended September 30, 2020; Korea for the year ended September 30, 2021; Spain for the years ended September 30, 2020 through September 30, 2022; and Germany for the years ended June 30, 2012 through September 30, 2020. The Company believes its income tax reserves for these tax matters are adequate.

Leases

Leases	3 Months Ended
Leases	Sep. 30, 2024
Leases [Abstract]
Leases	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 Other liabilities Operating leases are recorded in Other assets and Operating lease liabilities, current and non-current 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 includes it in the initial measurement of our leased assets and corresponding liabilities. Our lease terms and conditions may include options to extend or terminate. An option is recognized when it is reasonably certain that we will exercise that option. Our lease assets also include any lease payments made, and exclude any lease incentives received prior to commencement. Our lease assets are tested for impairment in the same manner as long-lived assets used in operations. The following table presents lease costs, which include leases for arrangements with an initial term of more than 12 months, lease term, and discount rates ($000): Three Months Ended September 30, 2024 Three Months Ended Finance lease cost Amortization of right-of-use assets $ 417 $ 417 Interest on lease liabilities 246 268 Total finance lease cost 663 685 Operating lease cost 14,259 12,937 Total lease cost $ 14,922 $ 13,622 Cash Paid for Amounts Included in the Measurement of Lease Liabilities Operating cash flows from finance leases $ 246 $ 268 Operating cash flows from operating leases 13,695 12,268 Financing cash flows from finance leases 419 379 Weighted-Average Remaining Lease Term (in Years) Finance leases 7.3 8.3 Operating leases 6.8 7.2 Weighted-Average Discount Rate Finance leases 5.6 % 5.6 % Operating leases 7.0 % 5.8 %
Leases	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 Other liabilities Operating leases are recorded in Other assets and Operating lease liabilities, current and non-current 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 includes it in the initial measurement of our leased assets and corresponding liabilities. Our lease terms and conditions may include options to extend or terminate. An option is recognized when it is reasonably certain that we will exercise that option. Our lease assets also include any lease payments made, and exclude any lease incentives received prior to commencement. Our lease assets are tested for impairment in the same manner as long-lived assets used in operations. The following table presents lease costs, which include leases for arrangements with an initial term of more than 12 months, lease term, and discount rates ($000): Three Months Ended September 30, 2024 Three Months Ended Finance lease cost Amortization of right-of-use assets $ 417 $ 417 Interest on lease liabilities 246 268 Total finance lease cost 663 685 Operating lease cost 14,259 12,937 Total lease cost $ 14,922 $ 13,622 Cash Paid for Amounts Included in the Measurement of Lease Liabilities Operating cash flows from finance leases $ 246 $ 268 Operating cash flows from operating leases 13,695 12,268 Financing cash flows from finance leases 419 379 Weighted-Average Remaining Lease Term (in Years) Finance leases 7.3 8.3 Operating leases 6.8 7.2 Weighted-Average Discount Rate Finance leases 5.6 % 5.6 % Operating leases 7.0 % 5.8 %

Equity and Redeemable Preferred

Equity and Redeemable Preferred Stock	3 Months Ended
Equity and Redeemable Preferred Stock	Sep. 30, 2024
Equity [Abstract]
Equity and Redeemable Preferred Stock	Equity and Redeemable Preferred Stock As of September 30, 2024, the Company’s amended and restated articles of incorporation authorize our board of directors, without the approval of our shareholders, to issue 5 million shares of our preferred stock. As of September 30, 2024, 2.3 million shares of mandatory preferred convertible shares have been authorized, none are outstanding; 75,000 shares of Series B-1 convertible preferred stock, no par value, have been issued and are outstanding; and 140,000 shares of Series B-2 convertible preferred stock, no par value, have been issued and are outstanding. Mandatory Convertible Preferred Stock In July 2020, the Company issued 2.3 million shares of Mandatory Convertible Preferred Stock. All outstanding shares of Mandatory Convertible Preferred Stock were converted to 10,240,290 shares of Company Common Stock on July 3, 2023, at a conversion ratio of 4.4523, and no shares of Mandatory Convertible Preferred Stock are currently issued and outstanding. Series B Convertible Preferred Stock In March 2021, the Company issued 75,000 shares of Series B-1 Convertible Preferred Stock, no par value per share (“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 Convertible Preferred Stock, no par value per share (“Series B-2 Preferred Stock” and, together with the Series B-1 Preferred Stock, the “Series B Preferred Stock”), for $10,000 per share and an aggregate purchase price of $1.4 billion. The shares of Series B Preferred Stock are convertible into shares of Coherent Common Stock as follows: • at the election of the holder, at an initial conversion price of $85 per share (as it may be adjusted from time to time, the “Conversion Price”) upon the delivery by Coherent to the holders of the Series B Preferred Stock of an offer to repurchase the Series B-1 Preferred Stock upon the occurrence of a Fundamental Change (as defined in the Statement with Respect to Shares establishing the Series B Preferred Stock as defined below); and • at the election of the Company, any time following March 31, 2024 and July 1, 2025 for the Series B-1 and B-2 Preferred Stock, respectively, at the then-applicable Conversion Price if the volume-weighted average price of Coherent Common Stock exceeds 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 currently have voting rights, voting as one class with the Coherent Common Stock, on an as-converted basis, subject to limited exceptions. On or at any time after March 31, 2031 and July 1, 2032 for the Series B-1 and B-2 Preferred Stock, respectively: • each holder has the right to require the Company to redeem all of their Coherent Series B Preferred Stock, for cash, at a redemption price per share equal to the sum of the Stated Value (as defined in the Statement with Respect to Shares establishing the Series B Preferred Stock) for such shares plus an amount equal to all accrued or declared and unpaid dividends on such shares that had not previously been added to the Stated Value (such price the “Redemption Price,” and such right the “Put Right”); and • the Company has the right to redeem, in whole or in part, on a pro rata basis from all holders based on the aggregate number of shares of Series B Preferred Stock outstanding, for cash, at the Redemption Price. In connection with any Fundamental Change (as defined in the Statement with Respect to Shares establishing the Series B Preferred Stock), and subject to the procedures set forth in the Statement with Respect to Shares establishing the Series B Preferred Stock, the Company must, or will cause the survivor of a Fundamental Change to, make an offer to repurchase, at the option and election of the holder thereof, each share of Series B Preferred Stock then-outstanding at a purchase price per share in cash equal to (i) the Stated Value for such shares plus an amount equal to all accrued or declared and unpaid dividends on such shares that had not previously been added to the Stated Value as of the date of repurchase plus (ii) if prior to March 31, 2026 and July 1, 2027, for the Series B-1 and B-2 Preferred Stock, respectively, the aggregate amount of all dividends that would have been paid (subject to certain exceptions), from the date of repurchase through March 31, 2026 and July 1, 2027, for the Series B-1 and B-2 Preferred Stock, respectively. If the Company defaults on a payment obligation with respect to the Series B Preferred Stock and such default is not cured within 30 days, the dividend rate will increase to 8% per annum and will be increased by an additional 2% per annum each quarter the Company remains in default, not to exceed 14% per annum. The Series B Preferred Stock is redeemable for cash outside of the control of the Company upon the exercise of the Put Right, and upon a Fundamental Change, and is therefore classified as mezzanine equity. The Series B Preferred Stock is initially measured at fair value less issuance costs, accreted to its redemption value over a 10-year period (using the effective interest method) with such accretion accounted for as deemed dividends and reductions to Net Earnings (Loss) Available to Common Shareholders. Preferred stock dividends are presented as a reduction to Retained earnings on the Condensed Consolidated Balance Sheets. The following table presents dividends per share and dividends recognized: Three Months Ended 2024 2023 Dividends per share $ 148 $ 140 Dividends ($000) 30,348 28,874 Deemed dividends ($000) 1,485 1,299

Noncontrolling Interests

Noncontrolling Interests	3 Months Ended
Noncontrolling Interests	Sep. 30, 2024
Noncontrolling Interest [Abstract]
Noncontrolling Interests	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 consequence 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, individually, 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, will be used to fund future capital expansion of Silicon Carbide. The following table presents the activity in noncontrolling interests in Silicon Carbide ($000s): Three Months Ended Balance-beginning of period $ 371,392 Share of foreign currency translation adjustments 551 Net loss (1,026) Balance-end of period $ 370,917

Earnings (Loss) Per Share

Earnings (Loss) Per Share	3 Months Ended
Earnings (Loss) Per Share	Sep. 30, 2024
Earnings Per Share [Abstract]
Earnings (Loss) Per Share	Earnings (Loss) Per Share Basic earnings (loss) per common share is computed by dividing net earnings (loss) available to the common shareholders by the weighted-average number of shares of common stock outstanding during the period. Diluted earnings (loss) per common share is computed by dividing the diluted earnings (loss) available to the common shareholders by the weighted-average number of shares of common stock and potentially dilutive shares of common stock outstanding during the period. For the three months ended September 30, 2024 and September 30, 2023, as the Company was in a net loss position, there were no dilutive shares. Potentially dilutive shares whose effect would have been anti-dilutive are excluded from the computation of diluted earnings (loss) per common share. For the three months ended September 30, 2024 and September 30, 2023, diluted earnings (loss) per share excluded the potentially dilutive effect of the performance and restricted shares, calculated based on the average stock price for each fiscal period, using the treasury stock method, as well as the shares of Coherent Common Stock issuable upon conversion of the Series B Convertible Preferred Stock (under the If-Converted method), as their effects were anti-dilutive. The following is a reconciliation of the numerators and denominators of the basic and diluted earnings (loss) per share computations (000, except per share data): Three Months Ended 2024 2023 Numerator Net earnings (loss) attributable to Coherent Corp. $ 25,887 $ (67,534) Deduct Series B dividends and deemed dividends (31,833) (30,173) Basic loss available to common shareholders $ (5,946) $ (97,707) Diluted loss available to common shareholders $ (5,946) $ (97,707) Diluted weighted average common shares 153,626 150,328 Basic loss per common share $ (0.04) $ (0.65) Diluted loss per common share $ (0.04) $ (0.65) The following table presents potential shares of common stock excluded from the calculation of diluted net loss per share, as their effect would have been anti-dilutive (000): Three Months Ended 2024 2023 Common stock equivalents 4,944 2,337 Series B Convertible Preferred Stock 28,563 27,176 Total anti-dilutive shares 33,507 29,513

Segment Reporting

Segment Reporting	3 Months Ended
Segment Reporting	Sep. 30, 2024
Segment Reporting [Abstract]
Segment Reporting	Segment Reporting The Company reports its business segments using the “management approach” model for segment reporting. This means that we determine our reportable business segments based on the way the chief operating decision-maker (“CODM”) analyzes business segments within the Company for making operating decisions and assessing financial performance. We report our financial results in the following three segments: (i) Networking, (ii) Materials, and (iii) Lasers. Our CODM receives and reviews financial information based on these three segments. During the first quarter of fiscal 2025 as a result of a new CEO joining the Company in the fourth quarter of fiscal 2024, our CODM implemented changes in the measure he uses to allocate resources and assess performance. Our CODM now evaluates each segment’s performance and allocates resources based on segment revenue and segment profit, instead of operating income, as our CODM believes segment profit is a more comprehensive profitability measure for each operating 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, and certain other charges. Additionally, effective the first quarter of fiscal 2025, we no longer 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 market, production requirements and facilities unique to each segment. The accounting policies are consistent across each segment. Effective the first quarter of fiscal 2025, we no longer allocate corporate assets to the segments. Comparative prior period segment information has been recast to conform to the new segment profitability measure. The change in our operating segment measure had no impact on our previously reported consolidated results of operations, financial condition, or cash flows. The following tables summarize selected financial information of our operations by segment and reconciles segment profit to consolidated earnings (loss) before income taxes for the periods presented ($000): Three Months Ended 2024 2023 Segment revenue Networking $ 762,872 $ 472,849 Materials 237,427 244,640 Lasers 347,836 335,594 Total segment revenue 1,348,135 1,053,083 Intersegment revenue Networking 14,427 12,887 Materials 132,168 87,742 Lasers 1,564 639 Unallocated (148,159) (101,268) Total intersegment revenue — — Segment profit Networking 140,276 67,193 Materials 96,647 57,815 Lasers 68,785 52,900 Total segment profit 305,708 177,908 Unallocated Corporate items: Corporate and centralized function costs (1) (73,102) (45,535) Share-based compensation (35,478) (44,524) Restructuring costs (2) (24,364) (3,018) Integration, site consolidated and other costs (3) (25,702) (33,074) Amortization of intangibles (71,862) (72,662) Start-up costs — (403) Interest expense (66,644) (73,258) Other (income) expense, net 10,749 6,269 Earnings (loss) before income taxes $ 19,303 $ (88,297) Expenditures for property, plant, and equipment Networking $ 48,686 $ 17,493 Materials 33,796 40,512 Lasers 9,502 4,192 Total expenditures for property, plant, and equipment $ 91,984 $ 62,197 Segment assets and reconciliation to total assets Networking $ 3,495,881 $ 3,200,796 Materials 2,911,978 2,027,164 Lasers 7,536,963 7,569,884 Corporate and shared services 754,478 723,454 Total assets $ 14,699,300 $ 13,521,298 (1) We do not allocate corporate and centralized function costs that are not directly attributable to our operating segments. (2) See Note 17. Restructuring Plan for further information. (3) Integration and site consolidation costs in the three months ended September 30, 2024 include $12 million consulting costs related to projects to integrate recent acquisitions into common technology systems and simplify legal entity structure, $9 million of manufacturing inefficiencies, employee severance and retention costs and duplicative labor related to sites being shut down as part of our 2023 Restructuring Plan or Synergy and Site Consolidation Plan, $4 million charges for products that are end-of-life and $1 million of severance related to the retirement of executives. Integration and site consolidation costs in the three months ended September 30, 2023 include $17 million of manufacturing inefficiencies, employee severance and retention costs and duplicative labor related to sites being shut down as part of our 2023 Restructuring Plan or Synergy and Site Consolidation Plan, $7 million consulting costs related to projects to integrate recent acquisitions into common technology systems and simplify legal entity structure, $7 million charges for products that are end-of-life, including inventory, production equipment to produce those products and $2 million of severance related to the retirement of executives.

Share-Based Compensation

Share-Based Compensation	3 Months Ended
Share-Based Compensation	Sep. 30, 2024
Share-Based Payment Arrangement [Abstract]
Share-Based Compensation	Share-Based Compensation Stock Award Plans The Company’s Board of Directors amended the Coherent Corp. 2018 Omnibus Incentive Plan, which originally was approved by the Company's shareholders at the Annual Meeting in November 2018, as the Coherent Corp. Omnibus Incentive Plan (as amended and restated, the “Plan”). The Plan was approved at the Annual Meeting in November 2023. The Plan provides for the grant of stock options, stock appreciation rights, restricted shares, restricted share units, deferred shares, performance shares and performance share units to employees, officers and directors of the Company. The maximum number of shares of Coherent Common Stock authorized for issuance under the Plan is limited to 13,450,000 shares of Coherent Common Stock, not including any remaining shares forfeited under the predecessor plans that may be rolled into the Plan. Certain awards under the Plan have certain vesting provisions predicated upon the death, retirement or disability of the grantee. On the Closing Date, the Company assumed the Coherent, Inc. Equity Incentive Plan (“Coherent, Inc. Plan”) and the Coherent, Inc. unvested restricted stock units (“Converted RSUs”) that are generally subject to the same terms and conditions that applied to the Converted RSUs immediately prior to the Closing Date. After the Closing Date, the Company granted restricted stock units under the Coherent, Inc. Plan through August 28, 2023. The Coherent, Inc. Plan was terminated upon adoption of the Plan in November 2023. No additional awards will be granted under the Coherent, Inc. Plan. On June 3, 2024, the Board of Directors granted 147,214 restricted stock units vesting over three years from date of grant and 694,007 performance stock units vesting over the approximate three-year period ending June 30, 2027, to the new CEO. The grants were non-Plan “employment inducement awards” as contemplated by the New York Stock Exchange Listing Rule 303A.08 and therefore were not made pursuant to the Plan. On October 11, 2024, the Board of Directors granted 15,902 and 63,154 restricted stock units vesting over three years and two years, respectively, from date of grant and 118,853 performance stock units vesting over the approximate three-year period ending June 30, 2027, to the new CFO. The grants were non-Plan “employment inducement awards” as contemplated by the New York Stock Exchange Listing Rule 303A.08 and therefore were not made pursuant to the Plan. The Company has an Employee Stock Purchase Plan whereby eligible employees may authorize payroll deductions of up to 10%, or such other percentage up to 15% that the Company determines, of their regular base salary to purchase shares at the lower of 85% of the fair market value of the common stock on the date of commencement of the offering or on the last day of the six-month offering period. Share-based compensation expense for the periods indicated was as follows ($000): Three Months Ended 2024 2023 Stock Options and Cash-Based Stock Appreciation Rights $ 417 $ (1,057) Restricted Share Awards and Cash-Based Restricted Share Unit Awards 23,769 31,065 Performance Share Awards and Cash-Based Performance Share Unit Awards 8,992 10,845 Employee Stock Purchase Plan 2,300 3,671 $ 35,478 $ 44,524

Fair Value of Financial Instrum

Fair Value of Financial Instruments	3 Months Ended
Fair Value of Financial Instruments	Sep. 30, 2024
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	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. We entered into an interest rate swap with a notional amount of $1,075 million to limit the exposure to our variable interest rate debt by effectively converting it to a fixed interest rate. Through February 28, 2023, we received payments based on the one-month LIBOR and made payments based on a fixed rate of 1.52%. We received payments with a floor of 0.00%. The interest rate swap agreement had an effective date of November 24, 2019, with an expiration date of September 24, 2024. The initial notional amount of the interest rate swap decreased to $825 million in June 2022, and remained at that amount through its expiration on September 24, 2024. On March 20, 2023, we amended our $825 million interest rate swap (“Amended Swap”), effective as of February 28, 2023, to replace the current reference rate (LIBOR) with SOFR, to be consistent with Amendment No. 1 to the Credit Agreement. See Note 7. Debt for further information. Under the Amended Swap, we received payments based on the one-month SOFR and made payments based on a fixed rate of 1.42%. We received payments with a floor of 0.10%. We designated this instrument as a cash flow hedge, and deemed the hedge relationship effective at inception of the contract and the amended contract. The interest rate swap expired on September 30, 2024. The fair value of the interest rate swap of $8 million is recognized in the Condensed Consolidated Balance Sheet within Prepaid and other current assets On February 23, 2022, we entered into an interest rate cap (the “Cap”) with an effective date of July 1, 2023. On March 20, 2023, we amended the Cap to replace the current reference rate (LIBOR) with SOFR, to be consistent with Amendment No. 1 to the Credit Agreement. See Note 7. 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. The Cap will carry a notional amount ranging from $500 million to $1,500 million. 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 $22 million and $50 million is recognized in the Condensed Consolidated Balance Sheet within Prepaid and other current assets Other assets 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 Accumulated other comprehensive income (loss). Amounts accumulated in accumulated other comprehensive income (loss) 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, Term A Facility and Term B Facility (“Debt Facilities”) based on quoted market prices as of the last trading day prior to September 30, 2024; 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 7. 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, 2024 June 30, 2024 Fair Value Carrying Value Fair Value Carrying Value Senior Notes $ 969,220 $ 984,301 $ 938,193 $ 984,061 Term A Facility 763,088 757,107 777,564 762,039 Term B Facility 2,269,116 2,232,728 2,390,497 2,334,701 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, 2024, total restricted cash of $763 million includes $757 million of cash in Silicon Carbide LLC that is restricted for use only by that subsidiary and $5 million of cash restricted for other purposes in other entities. At June 30, 2024, total restricted cash of $864 million includes $858 million of cash in Silicon Carbide LLC that is restricted for use only by that subsidiary and $5 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 September 30, 2024, we had foreign currency forward contracts recorded at fair value. The fair values of these instruments were 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, 2024 were $16 million and realized losses related to these contracts for the three months ended September 30, 2023 were $11 million and were included in Other income, net in the Condensed Consolidated Statements of Earnings (Loss).

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	3 Months Ended
Accumulated Other Comprehensive Income (Loss)	Sep. 30, 2024
Equity [Abstract]
Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss) The changes in AOCI by component, net of tax, for the three months ended September 30, 2024 were as follows ($000): Foreign Interest Interest Defined Total AOCI - June 30, 2024 $ (26,092) $ (3,401) $ 39,317 $ (7,184) $ 2,640 Other comprehensive income (loss) before reclassifications 289,723 9,060 (16,713) (155) 281,915 Amounts reclassified from AOCI — (5,659) (5,443) — (11,102) Net current-period other comprehensive income (loss) 289,723 3,401 (22,156) (155) 270,813 AOCI - September 30, 2024 $ 263,631 $ — $ 17,161 $ (7,339) $ 273,453

Restructuring Plan

Restructuring Plan	3 Months Ended
Restructuring Plan	Sep. 30, 2024
Restructuring and Related Activities [Abstract]
Restructuring Plan	Restructuring Plan Restructuring Plan On May 23, 2023, the Board of Directors approved the Company’s May 2023 Restructuring Plan which includes site consolidations, facilities moves and closures, as well as the relocation and requalification of certain manufacturing facilities. These restructuring actions are expected to be accompanied by other cost reductions, and are 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, 2024, these activities resulted in $24 million of charges primarily for impairment losses associated with the sale of our Newton Aycliffe business, accelerated depreciation, and site move costs. In the three months ended September 30, 2023, these activities resulted in $3 million of charges primarily for employee termination costs as well as site move costs, write-off of property and equipment and acceleration of depreciation. We expect the restructuring actions to be substantially completed by the end of fiscal 2025. However, the actual timing and costs associated with these restructuring actions may differ from our current expectations and estimates and such differences may be material. Activity and accrual balances for the Restructuring Plan were as follows for the three months ended September 30, 2024 and September 30, 2023 ($000): Severance Asset Write-Offs Other Total Accrual Balance - June 30, 2024 $ 51,061 $ — $ — $ 51,061 Restructuring charges (recoveries) (455) 15,970 8,850 24,365 Payments (6,796) — — (6,796) Asset write-offs and other — (15,970) (8,850) (24,820) Balance - September 30, 2024 $ 43,810 $ — $ — $ 43,810 Severance Asset Write-Offs Other Total Accrual Balance - June 30, 2023 $ 64,379 $ — $ — $ 64,379 Restructuring charges 2,050 269 699 3,018 Payments (7,930) — — (7,930) Asset write-offs and other — (269) (699) (968) Balance - September 30, 2023 $ 58,499 $ — $ — $ 58,499 At September 30, 2024, $14 million and $30 million of accrued severance related costs were included in other accrued liabilities and other liabilities, respectively, and are expected to result in cash expenditures through fiscal 2028. The current year severance related recoveries are primarily comprised of adjustments to accruals for severance pay for employees being terminated due to the consolidation of certain manufacturing sites, with severance recorded in accordance with ASC 712. The prior year severance related costs are primarily comprised of severance pay for employees being terminated due to the consolidation of certain manufacturing sites, with severance recorded in accordance with ASC 712. By segment, for the three months ended September 30, 2024, $24 million of restructuring costs were incurred in the Materials segment, and an immaterial amount of restructuring costs were incurred in the Lasers and Networking segments. By segment, for the three months ended September 30, 2023, $5 million of restructuring costs were incurred in the Materials segment, partially offset by $2 million of restructuring recoveries in the Networking segment. Restructuring charges and recoveries are recorded in Restructuring Charges in our Condensed Consolidated Statements of Earnings (Loss).

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended
Pay vs Performance Disclosure - USD ($) $ in Thousands	Sep. 30, 2024	Sep. 30, 2023
Pay vs Performance Disclosure
Net Income (Loss)	$ 25,887	$ (67,534)

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
Insider Trading Arrangements	Sep. 30, 2024
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

Basis of Presentation (Policies

Basis of Presentation (Policies)	3 Months Ended
Basis of Presentation (Policies)	Sep. 30, 2024
Accounting Policies [Abstract]
Reclassification	Certain prior year amounts have been reclassified for consistency with the current year presentation.
Recently Issued Financial Accounting Standards	In November 2023, the FASB issued Accounting Standards Update (“ASU”) 2023-07 - Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures. This ASU improves reportable segment disclosure requirements, primarily through enhanced disclosures about significant segment expenses. This ASU is effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024. Early adoption is permitted. The Company is evaluating the impact this will have on the Company’s consolidated financial statements and disclosures. In December 2023, the FASB issued ASU 2023-09, “Income Taxes (Topic 740): Improvements to Income Tax Disclosures” (“ASU 2023-09”). ASU 2023-09 includes amendments that further enhance income tax disclosures, primarily through standardization and disaggregation of rate reconciliation categories and income taxes paid by jurisdiction. ASU 2023-09 is effective for annual periods beginning after December 15, 2024, on either a prospective or retrospective basis. Early adoption is permitted. The Company is currently evaluating the impact of ASU 2023-09 on its consolidated financial statements and related disclosures. In March 2024, the Securities and Exchange Commission (the “SEC”) issued the final rule under SEC Release No. 33-11275 and 34-99678, “The Enhancement and Standardization of Climate-Related Disclosures for Investors,” requiring public companies to provide certain climate-related information in their registration statements and annual reports. The final rules will require information about a company’s climate-related risks that have materially impacted or are reasonably likely to have a material impact on its business strategy, results of operations, or financial condition, and the actual and potential material impacts of any identified climate-related risks on the company’s strategy, business model and outlook, as well as relating to assessment, management, oversight and mitigation of such material risks, material climate-related targets and goals, and material greenhouse gas emissions. Additionally, certain disclosures related to severe weather events and other natural conditions will be required in the audited financial statements. The first phase of the final rule is effective for fiscal years beginning in 2025. Disclosure for prior periods is only required if it was previously disclosed in an SEC filing. On April 4, 2024, the SEC voluntarily stayed implementation of the final rule to facilitate the orderly judicial resolution of pending legal challenges to the rule. We are currently evaluating the impact on our disclosures of adopting this new pronouncement.
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.

Revenue from Contracts with C_2

Revenue from Contracts with Customers (Tables)	3 Months Ended
Revenue from Contracts with Customers (Tables)	Sep. 30, 2024
Revenue from Contract with Customer [Abstract]
Schedule of Disaggregated Revenue	The following tables summarize disaggregated revenue by market ($000): Three Months Ended September 30, 2024 Networking Materials Lasers Total Industrial $ 14,380 $ 119,646 $ 272,914 $ 406,940 Communications 739,156 35,135 — 774,291 Electronics 2,171 74,057 — 76,228 Instrumentation 7,165 8,589 74,922 90,676 Total Revenues $ 762,872 $ 237,427 $ 347,836 $ 1,348,135 Three Months Ended September 30, 2023 Networking Materials Lasers Total Industrial $ 15,965 $ 133,203 $ 255,166 $ 404,334 Communications 446,274 13,252 — 459,526 Electronics 1,724 88,065 — 89,789 Instrumentation 8,886 10,120 80,428 99,434 Total Revenues $ 472,849 $ 244,640 $ 335,594 $ 1,053,083

Inventories (Tables)

Inventories (Tables)	3 Months Ended
Inventories (Tables)	Sep. 30, 2024
Inventory Disclosure [Abstract]
Schedule of Components of Inventories	The components of inventories were as follows ($000): September 30, June 30, Raw materials $ 385,422 $ 429,888 Work in progress 736,432 620,575 Finished goods 264,295 235,941 Total inventories $ 1,386,149 $ 1,286,404

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	3 Months Ended
Property, Plant and Equipment (Tables)	Sep. 30, 2024
Property, Plant and Equipment [Abstract]
Schedule of Property, Plant and Equipment	Property, plant and equipment consists of the following ($000): September 30, June 30, Land and improvements $ 67,572 $ 66,156 Buildings and improvements 793,950 774,991 Machinery and equipment 2,111,407 2,034,310 Construction in progress 440,674 398,884 Finance lease right-of-use asset 25,000 25,000 3,438,603 3,299,341 Less accumulated depreciation and amortization (1,563,289) (1,482,082) Property, plant, and equipment, net $ 1,875,314 $ 1,817,259

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	3 Months Ended
Goodwill and Other Intangible Assets (Tables)	Sep. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Carrying Amount of Goodwill	Changes in the carrying amount of goodwill were as follows ($000): Three Months Ended September 30, 2024 Networking Materials Lasers Total Balance-beginning of period $ 1,036,592 $ 245,983 $ 3,181,754 $ 4,464,329 Foreign currency translation 1,900 2,778 126,636 131,314 Balance-end of period $ 1,038,492 $ 248,761 $ 3,308,390 $ 4,595,643
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, 2024 June 30, 2024 Gross Accumulated Net Gross Accumulated Net Book Value Technology $ 1,685,122 $ (430,328) $ 1,254,794 $ 1,653,289 $ (394,040) $ 1,259,249 Trade Names 438,470 (8,470) 430,000 438,470 (8,470) 430,000 Customer Lists 2,377,951 (549,878) 1,828,073 2,310,550 (498,252) 1,812,298 Backlog and Other 91,732 (89,912) 1,820 88,792 (87,092) 1,700 Total $ 4,593,275 $ (1,078,588) $ 3,514,687 $ 4,491,101 $ (987,854) $ 3,503,247

Debt (Tables)

Debt (Tables)	3 Months Ended
Debt (Tables)	Sep. 30, 2024
Debt Disclosure [Abstract]
Schedule of Components of Debt	The components of debt as of the dates indicated were as follows ($000): September 30, June 30, Term A Facility, interest at adjusted SOFR, as defined, plus 1.850% $ 765,000 $ 775,625 Debt issuance costs, Term A Facility and Revolving Credit Facility (12,456) (13,586) Term B Facility, interest at adjusted SOFR, as defined, plus 2.500% 2,274,803 2,384,536 Debt issuance costs, Term B Facility (42,075) (49,835) 1.30% Term loan — 335 Facility construction loan in Germany 19,196 19,082 5.000% Senior Notes 990,000 990,000 Debt issuance costs and discount, Senior Notes (5,699) (5,939) Total debt 3,988,769 4,100,218 Current portion of long-term debt (69,928) (73,770) Long-term debt, less current portion $ 3,918,841 $ 4,026,448

Leases (Tables)

Leases (Tables)	3 Months Ended
Leases (Tables)	Sep. 30, 2024
Leases [Abstract]
Schedule of Lease Costs	The following table presents lease costs, which include leases for arrangements with an initial term of more than 12 months, lease term, and discount rates ($000): Three Months Ended September 30, 2024 Three Months Ended Finance lease cost Amortization of right-of-use assets $ 417 $ 417 Interest on lease liabilities 246 268 Total finance lease cost 663 685 Operating lease cost 14,259 12,937 Total lease cost $ 14,922 $ 13,622 Cash Paid for Amounts Included in the Measurement of Lease Liabilities Operating cash flows from finance leases $ 246 $ 268 Operating cash flows from operating leases 13,695 12,268 Financing cash flows from finance leases 419 379 Weighted-Average Remaining Lease Term (in Years) Finance leases 7.3 8.3 Operating leases 6.8 7.2 Weighted-Average Discount Rate Finance leases 5.6 % 5.6 % Operating leases 7.0 % 5.8 %

Equity and Redeemable Preferr_2

Equity and Redeemable Preferred Stock (Tables)	3 Months Ended
Equity and Redeemable Preferred Stock (Tables)	Sep. 30, 2024
Equity [Abstract]
Schedule of Dividends	The following table presents dividends per share and dividends recognized: Three Months Ended 2024 2023 Dividends per share $ 148 $ 140 Dividends ($000) 30,348 28,874 Deemed dividends ($000) 1,485 1,299

Noncontrolling Interests (Table

Noncontrolling Interests (Tables)	3 Months Ended
Noncontrolling Interests (Tables)	Sep. 30, 2024
Noncontrolling Interest [Abstract]
Schedule of Noncontrolling Interests	The following table presents the activity in noncontrolling interests in Silicon Carbide ($000s): Three Months Ended Balance-beginning of period $ 371,392 Share of foreign currency translation adjustments 551 Net loss (1,026) Balance-end of period $ 370,917

Earnings (Loss) Per Share (Tabl

Earnings (Loss) Per Share (Tables)	3 Months Ended
Earnings (Loss) Per Share (Tables)	Sep. 30, 2024
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 (loss) per share computations (000, except per share data): Three Months Ended 2024 2023 Numerator Net earnings (loss) attributable to Coherent Corp. $ 25,887 $ (67,534) Deduct Series B dividends and deemed dividends (31,833) (30,173) Basic loss available to common shareholders $ (5,946) $ (97,707) Diluted loss available to common shareholders $ (5,946) $ (97,707) Diluted weighted average common shares 153,626 150,328 Basic loss per common share $ (0.04) $ (0.65) Diluted loss per common share $ (0.04) $ (0.65)
Schedule of Potential Shares Excluded from Calculation of Diluted Net Loss Per Share	The following table presents potential shares of common stock excluded from the calculation of diluted net loss per share, as their effect would have been anti-dilutive (000): Three Months Ended 2024 2023 Common stock equivalents 4,944 2,337 Series B Convertible Preferred Stock 28,563 27,176 Total anti-dilutive shares 33,507 29,513

Segment Reporting (Tables)

Segment Reporting (Tables)	3 Months Ended
Segment Reporting (Tables)	Sep. 30, 2024
Segment Reporting [Abstract]
Schedule of Financial Information by Segment	The following tables summarize selected financial information of our operations by segment and reconciles segment profit to consolidated earnings (loss) before income taxes for the periods presented ($000): Three Months Ended 2024 2023 Segment revenue Networking $ 762,872 $ 472,849 Materials 237,427 244,640 Lasers 347,836 335,594 Total segment revenue 1,348,135 1,053,083 Intersegment revenue Networking 14,427 12,887 Materials 132,168 87,742 Lasers 1,564 639 Unallocated (148,159) (101,268) Total intersegment revenue — — Segment profit Networking 140,276 67,193 Materials 96,647 57,815 Lasers 68,785 52,900 Total segment profit 305,708 177,908 Unallocated Corporate items: Corporate and centralized function costs (1) (73,102) (45,535) Share-based compensation (35,478) (44,524) Restructuring costs (2) (24,364) (3,018) Integration, site consolidated and other costs (3) (25,702) (33,074) Amortization of intangibles (71,862) (72,662) Start-up costs — (403) Interest expense (66,644) (73,258) Other (income) expense, net 10,749 6,269 Earnings (loss) before income taxes $ 19,303 $ (88,297) Expenditures for property, plant, and equipment Networking $ 48,686 $ 17,493 Materials 33,796 40,512 Lasers 9,502 4,192 Total expenditures for property, plant, and equipment $ 91,984 $ 62,197 Segment assets and reconciliation to total assets Networking $ 3,495,881 $ 3,200,796 Materials 2,911,978 2,027,164 Lasers 7,536,963 7,569,884 Corporate and shared services 754,478 723,454 Total assets $ 14,699,300 $ 13,521,298 (1) We do not allocate corporate and centralized function costs that are not directly attributable to our operating segments. (2) See Note 17. Restructuring Plan for further information. (3) Integration and site consolidation costs in the three months ended September 30, 2024 include $12 million consulting costs related to projects to integrate recent acquisitions into common technology systems and simplify legal entity structure, $9 million of manufacturing inefficiencies, employee severance and retention costs and duplicative labor related to sites being shut down as part of our 2023 Restructuring Plan or Synergy and Site Consolidation Plan, $4 million charges for products that are end-of-life and $1 million of severance related to the retirement of executives. Integration and site consolidation costs in the three months ended September 30, 2023 include $17 million of manufacturing inefficiencies, employee severance and retention costs and duplicative labor related to sites being shut down as part of our 2023 Restructuring Plan or Synergy and Site Consolidation Plan, $7 million consulting costs related to projects to integrate recent acquisitions into common technology systems and simplify legal entity structure, $7 million charges for products that are end-of-life, including inventory, production equipment to produce those products and $2 million of severance related to the retirement of executives.

Share-Based Compensation (Table

Share-Based Compensation (Tables)	3 Months Ended
Share-Based Compensation (Tables)	Sep. 30, 2024
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 2024 2023 Stock Options and Cash-Based Stock Appreciation Rights $ 417 $ (1,057) Restricted Share Awards and Cash-Based Restricted Share Unit Awards 23,769 31,065 Performance Share Awards and Cash-Based Performance Share Unit Awards 8,992 10,845 Employee Stock Purchase Plan 2,300 3,671 $ 35,478 $ 44,524

Fair Value of Financial Instr_2

Fair Value of Financial Instruments (Tables)	3 Months Ended
Fair Value of Financial Instruments (Tables)	Sep. 30, 2024
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, 2024 June 30, 2024 Fair Value Carrying Value Fair Value Carrying Value Senior Notes $ 969,220 $ 984,301 $ 938,193 $ 984,061 Term A Facility 763,088 757,107 777,564 762,039 Term B Facility 2,269,116 2,232,728 2,390,497 2,334,701

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Loss) (Tables)	3 Months Ended
Accumulated Other Comprehensive Income (Loss) (Tables)	Sep. 30, 2024
Equity [Abstract]
Schedule of AOCI, Net of Tax	The changes in AOCI by component, net of tax, for the three months ended September 30, 2024 were as follows ($000): Foreign Interest Interest Defined Total AOCI - June 30, 2024 $ (26,092) $ (3,401) $ 39,317 $ (7,184) $ 2,640 Other comprehensive income (loss) before reclassifications 289,723 9,060 (16,713) (155) 281,915 Amounts reclassified from AOCI — (5,659) (5,443) — (11,102) Net current-period other comprehensive income (loss) 289,723 3,401 (22,156) (155) 270,813 AOCI - September 30, 2024 $ 263,631 $ — $ 17,161 $ (7,339) $ 273,453

Restructuring Plan (Tables)

Restructuring Plan (Tables)	3 Months Ended
Restructuring Plan (Tables)	Sep. 30, 2024
Restructuring and Related Activities [Abstract]
Schedule of Components of Restructuring Charges and Payments and Other Deductions	Activity and accrual balances for the Restructuring Plan were as follows for the three months ended September 30, 2024 and September 30, 2023 ($000): Severance Asset Write-Offs Other Total Accrual Balance - June 30, 2024 $ 51,061 $ — $ — $ 51,061 Restructuring charges (recoveries) (455) 15,970 8,850 24,365 Payments (6,796) — — (6,796) Asset write-offs and other — (15,970) (8,850) (24,820) Balance - September 30, 2024 $ 43,810 $ — $ — $ 43,810 Severance Asset Write-Offs Other Total Accrual Balance - June 30, 2023 $ 64,379 $ — $ — $ 64,379 Restructuring charges 2,050 269 699 3,018 Payments (7,930) — — (7,930) Asset write-offs and other — (269) (699) (968) Balance - September 30, 2023 $ 58,499 $ — $ — $ 58,499

Revenue from Contracts with C_3

Revenue from Contracts with Customers - Schedule of Disaggregated Revenue by Market (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Disaggregation of Revenue [Line Items]
Revenues	$ 1,348,135	$ 1,053,083
Industrial
Disaggregation of Revenue [Line Items]
Revenues	406,940	404,334
Communications
Disaggregation of Revenue [Line Items]
Revenues	774,291	459,526
Electronics
Disaggregation of Revenue [Line Items]
Revenues	76,228	89,789
Instrumentation
Disaggregation of Revenue [Line Items]
Revenues	90,676	99,434
Networking
Disaggregation of Revenue [Line Items]
Revenues	762,872	472,849
Networking \| Industrial
Disaggregation of Revenue [Line Items]
Revenues	14,380	15,965
Networking \| Communications
Disaggregation of Revenue [Line Items]
Revenues	739,156	446,274
Networking \| Electronics
Disaggregation of Revenue [Line Items]
Revenues	2,171	1,724
Networking \| Instrumentation
Disaggregation of Revenue [Line Items]
Revenues	7,165	8,886
Materials
Disaggregation of Revenue [Line Items]
Revenues	237,427	244,640
Materials \| Industrial
Disaggregation of Revenue [Line Items]
Revenues	119,646	133,203
Materials \| Communications
Disaggregation of Revenue [Line Items]
Revenues	35,135	13,252
Materials \| Electronics
Disaggregation of Revenue [Line Items]
Revenues	74,057	88,065
Materials \| Instrumentation
Disaggregation of Revenue [Line Items]
Revenues	8,589	10,120
Lasers
Disaggregation of Revenue [Line Items]
Revenues	347,836	335,594
Lasers \| Industrial
Disaggregation of Revenue [Line Items]
Revenues	272,914	255,166
Lasers \| Communications
Disaggregation of Revenue [Line Items]
Revenues	0	0
Lasers \| Electronics
Disaggregation of Revenue [Line Items]
Revenues	0	0
Lasers \| Instrumentation
Disaggregation of Revenue [Line Items]
Revenues	$ 74,922	$ 80,428

Revenue from Contracts with C_4

Revenue from Contracts with Customers - Additional Information (Details) $ in Millions	3 Months Ended
	Sep. 30, 2024 USD ($)
Revenue from Contract with Customer [Abstract]
Revenue recognized related to customer payments	$ 27
Contract liabilities	69
Contract liabilities included in other accrued liabilities	56
Contract liabilities included within other liabilities	$ 13

Inventories (Details)

Inventories (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Jun. 30, 2024
Inventory Disclosure [Abstract]
Raw materials	$ 385,422	$ 429,888
Work in progress	736,432	620,575
Finished goods	264,295	235,941
Total inventories	$ 1,386,149	$ 1,286,404

Property Plant and Equipment (D

Property Plant and Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Jun. 30, 2024
Property, Plant and Equipment [Line Items]
Finance lease right-of-use asset	$ 25,000	$ 25,000
Property, plant, and equipment and finance lease right-of-use asset	3,438,603	3,299,341
Less accumulated depreciation and amortization	(1,563,289)	(1,482,082)
Property, plant, and equipment, net	1,875,314	1,817,259
Land and improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	67,572	66,156
Buildings and improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	793,950	774,991
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	2,111,407	2,034,310
Construction in progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 440,674	$ 398,884

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets - Schedule of Changes in Carrying Amount of Goodwill (Details) $ in Thousands	3 Months Ended
	Sep. 30, 2024 USD ($)
Goodwill [Roll Forward]
Balance-beginning of period	$ 4,464,329
Foreign currency translation	131,314
Balance-end of period	4,595,643
Networking
Goodwill [Roll Forward]
Balance-beginning of period	1,036,592
Foreign currency translation	1,900
Balance-end of period	1,038,492
Materials
Goodwill [Roll Forward]
Balance-beginning of period	245,983
Foreign currency translation	2,778
Balance-end of period	248,761
Lasers
Goodwill [Roll Forward]
Balance-beginning of period	3,181,754
Foreign currency translation	126,636
Balance-end of period	$ 3,308,390

Goodwill and Other Intangible_4

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, 2024	Jun. 30, 2024
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 4,593,275	$ 4,491,101
Accumulated Amortization	(1,078,588)	(987,854)
Net Book Value	3,514,687	3,503,247
Technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,685,122	1,653,289
Accumulated Amortization	(430,328)	(394,040)
Net Book Value	1,254,794	1,259,249
Trade Names
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	438,470	438,470
Accumulated Amortization	(8,470)	(8,470)
Net Book Value	430,000	430,000
Customer Lists
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	2,377,951	2,310,550
Accumulated Amortization	(549,878)	(498,252)
Net Book Value	1,828,073	1,812,298
Backlog and Other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	91,732	88,792
Accumulated Amortization	(89,912)	(87,092)
Net Book Value	$ 1,820	$ 1,700

Debt - Schedule of Components o

Debt - Schedule of Components of Debt (Detail) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Jul. 01, 2022	Dec. 10, 2021	Dec. 21, 2020
Line of Credit Facility [Line Items]
Total debt	$ 3,988,769	$ 4,100,218
Current portion of long-term debt	(69,928)	(73,770)
Long-term debt, less current portion	3,918,841	4,026,448
Line of credit \| Secured Debt
Line of Credit Facility [Line Items]
Debt, gross	$ 19,000
Line of credit \| Credit Agreement
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.85%
Line of credit \| Credit Agreement \| Term A Facility
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.85%
Debt, gross	$ 765,000	775,625
Line of credit \| Credit Agreement \| Debt issuance costs, Term A Facility and Revolving Credit Facility
Line of Credit Facility [Line Items]
Debt issuance costs	$ (12,456)	(13,586)
Line of credit \| Credit Agreement \| Term B Facility
Line of Credit Facility [Line Items]
Basis spread on variable rate	2.50%
Debt, gross	$ 2,274,803	2,384,536
Debt issuance costs	$ (42,075)	(49,835)
Line of credit \| 1.30% Term loan \| Secured Debt
Line of Credit Facility [Line Items]
Interest rate on debt	1.30%		1.30%
Debt, gross	$ 0	335
Line of credit \| Facility construction loan in Germany \| Secured Debt
Line of Credit Facility [Line Items]
Interest rate on debt					1.55%
Debt, gross	$ 19,196	19,082
Senior Notes \| 5.000% Senior Notes
Line of Credit Facility [Line Items]
Interest rate on debt	5%			5%
Debt, gross	$ 990,000	990,000
Debt issuance costs and discount, Senior Notes	$ (5,699)	$ (5,939)

Debt - Senior Credit Facility (

Debt - Senior Credit Facility (Details) - USD ($)			3 Months Ended
Debt - Senior Credit Facility (Details) - USD ($)	Apr. 02, 2024	Mar. 31, 2023	Sep. 30, 2024	Jun. 30, 2024	Sep. 30, 2023	Jul. 01, 2022
Line of Credit Facility [Line Items]
Amortization of debt issuance costs			$ 5,484,000		$ 3,567,000
Revolving Credit Facility \| Credit Agreement \| Minimum
Line of Credit Facility [Line Items]
Basis spread on variable rate		1.75%
Line of credit \| Credit Agreement
Line of Credit Facility [Line Items]
Basis spread on variable rate			1.85%
Line of credit \| Credit Agreement \| Maximum
Line of Credit Facility [Line Items]
Basis spread on variable rate		2.50%
Line of credit \| Secured Debt \| Credit Agreement
Line of Credit Facility [Line Items]
Aggregate amount of credit facility						$ 4,000,000,000
Increase (decrease) in interest expense			$ (13,000,000)		(11,000,000)
Amortization of debt issuance costs			5,000,000		3,000,000
Line of credit \| Secured Debt \| Credit Agreement \| Interest Rate Cap
Line of Credit Facility [Line Items]
Interest expense incurred			$ 53,000,000		$ 57,000,000
Line of credit \| Term A Facility \| Credit Agreement
Line of Credit Facility [Line Items]
Aggregate amount of credit facility						850,000,000
Adjusted variable rate floor		0.10%
Basis spread on variable rate			1.85%
Line of credit \| Term A Facility \| Credit Agreement \| Minimum
Line of Credit Facility [Line Items]
Basis spread on variable rate		1.75%
Line of credit \| Term B Facility \| Credit Agreement
Line of Credit Facility [Line Items]
Aggregate amount of credit facility						2,800,000,000
Adjusted variable rate floor	0.50%
Basis spread on variable rate			2.50%
Debt extinguishment costs				$ 2,000,000
Line of credit \| Revolving Credit Facility
Line of Credit Facility [Line Items]
Basis spread on variable rate			1.85%
Line of credit \| Revolving Credit Facility \| Credit Agreement
Line of Credit Facility [Line Items]
Aggregate amount of credit facility						350,000,000
Adjusted variable rate floor		0.10%
Line of credit \| Revolving Credit Facility \| Credit Agreement \| Maximum
Line of Credit Facility [Line Items]
Basis spread on variable rate		2.50%
Line of credit \| Letter of Credit \| Credit Agreement
Line of Credit Facility [Line Items]
Aggregate amount of credit facility						$ 50,000,000

Debt - Debt Assumed Through Acq

Debt - Debt Assumed Through Acquisition (Details) $ in Thousands	Dec. 21, 2020 EUR (€)	Sep. 30, 2024 USD ($)	Jun. 30, 2024 USD ($)	Jul. 01, 2022 loan
Line of credit \| Secured Debt
Debt Instrument [Line Items]
Aggregate principal outstanding		$ 19,000
Line of credit \| Secured Debt \| 1.30% Term loan
Debt Instrument [Line Items]
Aggregate principal outstanding		$ 0	$ 335
Interest rate on debt		1.30%		1.30%
Line of credit \| Secured Debt \| 1.00% State of Connecticut term loan due 2023
Debt Instrument [Line Items]
Interest rate on debt				1%
Line of credit \| Secured Debt \| Facility construction loan in Germany
Debt Instrument [Line Items]
Aggregate principal outstanding		$ 19,196	$ 19,082
Interest rate on debt	1.55%
Aggregate amount of credit facility \| €	€ 24,000,000
Term of loan	10 years
Coherent Inc.
Debt Instrument [Line Items]
Number of loans assumed \| loan				3

Debt - Senior Notes (Details)

Debt - Senior Notes (Details) - USD ($) $ in Millions		3 Months Ended
Debt - Senior Notes (Details) - USD ($) $ in Millions	Dec. 10, 2021	Sep. 30, 2024	Sep. 30, 2023
Senior Notes \| 5.000% Senior Notes
Debt Instrument [Line Items]
Interest rate on debt	5%	5%
Aggregate principal amount of bridge loan	$ 990
Interest expense incurred		$ 13	$ 13
Senior Notes \| 5.000% Senior Notes \| Senior Notes, Redemption, Period One
Debt Instrument [Line Items]
Redemption price, percentage of principal amount	100%
Senior Notes \| 5.000% Senior Notes \| Senior Notes, Redemption, Period Two
Debt Instrument [Line Items]
Redemption percentage	40%
Senior Notes \| 5.000% Senior Notes \| Senior Notes, Redemption, Period Three
Debt Instrument [Line Items]
Redemption price, percentage of principal amount	105%
Line of credit \| Credit Agreement \| Revolving Credit Facility
Debt Instrument [Line Items]
Available credit under lines of credit		$ 320

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended
Income Taxes (Details) - USD ($) $ in Millions	Sep. 30, 2024	Sep. 30, 2023	Jun. 30, 2024
Income Tax Disclosure [Abstract]
Effective income tax rate, percent	(29.00%)	24%
U.S. statutory rate	21%
Gross unrecognized tax benefit	$ 115		$ 117
Gross unrecognized tax benefits that would impact effective tax rate	19
Interest and penalties accrued	$ 8		$ 7

Leases (Details)

Leases (Details) - USD ($) $ in Thousands	3 Months Ended
Leases (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Sep. 30, 2023
Finance lease cost
Amortization of right-of-use assets	$ 417	$ 417
Interest on lease liabilities	246	268
Total finance lease cost	663	685
Operating lease cost	14,259	12,937
Total lease cost	14,922	13,622
Cash Paid for Amounts Included in the Measurement of Lease Liabilities
Operating cash flows from finance leases	246	268
Operating cash flows from operating leases	13,695	12,268
Financing cash flows from finance leases	$ 419	$ 379
Weighted-Average Remaining Lease Term (in Years)
Finance leases	7 years 3 months 18 days	8 years 3 months 18 days
Operating leases	6 years 9 months 18 days	7 years 2 months 12 days
Weighted-Average Discount Rate
Finance leases	5.60%	5.60%
Operating leases	7%	5.80%
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Other accrued liabilities
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other liabilities

Equity and Redeemable Preferr_3

Equity and Redeemable Preferred Stock - Additional Information (Details) $ / shares in Units, $ in Millions			1 Months Ended
	Jul. 03, 2023 shares	Jul. 01, 2022 USD ($) $ / shares shares	Mar. 31, 2021 USD ($) day $ / shares shares	Sep. 30, 2024 shares	Jun. 30, 2024 shares	Sep. 30, 2023 shares	Jun. 30, 2023 shares	Jul. 31, 2020 shares
Class of Stock [Line Items]
Preferred stock, shares authorized (in shares)				5,000,000
Mandatory preferred convertible shares outstanding (in shares)				215,000	215,000	215,000	215,000
Redeemable convertible preferred stock, shares issued (in shares)				215,000	215,000
Mandatory Convertible Preferred Stock
Class of Stock [Line Items]
Mandatory preferred convertible shares authorized (in shares)				2,300,000
Mandatory preferred convertible shares outstanding (in shares)				0
Redeemable convertible preferred stock, shares issued (in shares)				0				2,300,000
Convertible preferred stock, shares issued upon conversion (in shares)	4.4523
Series B Convertible Preferred Stock
Class of Stock [Line Items]
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%
Debt instrument conversion, trading days \| day			20
Debt instrument conversion, consecutive trading days \| day			30
Default on payment obligation, cure period			30 days
Default on payment obligation, dividend rate, quarterly increase, percentage			2%
Preferred stock, accretion of redemption value, period			10 years
Series B Convertible Preferred Stock \| Minimum
Class of Stock [Line Items]
Preferred stock, default on payment obligation, dividend rate, percentage			8%
Series B Convertible Preferred Stock \| Maximum
Class of Stock [Line Items]
Preferred stock, default on payment obligation, dividend rate, percentage			14%
Series B Convertible Preferred Stock \| Private Placement
Class of Stock [Line Items]
Proceeds from common stock and preferred stock options exercised in full \| $		$ 1,400
Series B-1 Convertible Preferred Stock
Class of Stock [Line Items]
Mandatory preferred convertible shares outstanding (in shares)				75,000
Redeemable convertible preferred stock, shares issued (in shares)				75,000
Equity per share price (in usd per share) \| $ / shares			$ 10,000
Series B-1 Convertible Preferred Stock \| Private Placement
Class of Stock [Line Items]
Shares issued and sold (in shares)			75,000
Proceeds from common stock and preferred stock options exercised in full \| $			$ 750
Series B-2 Convertible Preferred Stock
Class of Stock [Line Items]
Mandatory preferred convertible shares outstanding (in shares)				140,000
Redeemable convertible preferred stock, shares issued (in shares)				140,000
Series B-2 Convertible Preferred Stock \| Private Placement
Class of Stock [Line Items]
Shares issued and sold (in shares)		140,000
Common Stock
Class of Stock [Line Items]
Preferred stock, shares converted (in shares)	10,240,290

Equity and Redeemable Preferr_4

Equity and Redeemable Preferred Stock - Schedule of Dividends Recognized (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Class of Stock [Line Items]
Dividends	$ 31,833	$ 30,173
Series B-1 Convertible Preferred Stock
Class of Stock [Line Items]
Dividends per share (in usd per share)	$ 148	$ 140
Dividends	$ 30,348	$ 28,874
Deemed dividends	$ 1,485	$ 1,299

Noncontrolling Interests - Addi

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%
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%
Denso Corporation \| Silicon Carbide
Noncontrolling Interest [Line Items]
Sale of stock, value of shares issued		$ 500
Denso Corporation \| Silicon Carbide \| Common Class A \| Private Placement
Noncontrolling Interest [Line Items]
Shares issued and sold (in shares)	16,666,667
Mitsubishi Electric Corporation \| Silicon Carbide
Noncontrolling Interest [Line Items]
Sale of stock, value of shares issued		$ 500
Mitsubishi Electric Corporation \| Silicon Carbide \| Common Class A \| Private Placement
Noncontrolling Interest [Line Items]
Shares issued and sold (in shares)	16,666,667

Noncontrolling Interests - Sche

Noncontrolling Interests - Schedule of Noncontrolling Interests Activity (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Equity, Attributable to Noncontrolling Interest [Roll Forward]
Balance-beginning of period	$ 5,581,507	$ 4,987,551
Share of foreign currency translation adjustments	290,274	(107,903)
Net loss	24,861	(67,534)
Balance-end of period	5,871,994	4,831,986
NCI
Equity, Attributable to Noncontrolling Interest [Roll Forward]
Balance-beginning of period	371,392	0
Share of foreign currency translation adjustments	551
Net loss	(1,026)
Balance-end of period	370,917	$ 0
NCI \| Silicon Carbide
Equity, Attributable to Noncontrolling Interest [Roll Forward]
Balance-beginning of period	371,392
Share of foreign currency translation adjustments	551
Net loss	(1,026)
Balance-end of period	$ 370,917

Earnings (Loss) Per Share - Sch

Earnings (Loss) Per Share - Schedule of Reconciliation of Basic and Diluted of Earnings (loss) Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Numerator
Net earnings (loss) attributable to Coherent Corp.	$ 25,887	$ (67,534)
Deduct Series B dividends and deemed dividends	(31,833)	(30,173)
Net Loss Available to the Common Shareholders	(5,946)	(97,707)
Diluted loss available to common shareholders	$ (5,946)	$ (97,707)
Diluted weighted average common shares (in shares)	153,626	150,328
Basic loss per common share (in usd per share)	$ (0.04)	$ (0.65)
Diluted loss per common share (in usd per share)	$ (0.04)	$ (0.65)

Earnings (Loss) Per Share - S_2

Earnings (Loss) Per Share - Schedule of Potential Shares Excluded from Calculation of Diluted Net Loss Per Share (Details) - shares shares in Thousands	3 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total anti-dilutive shares (in shares)	33,507	29,513
Common stock equivalents
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total anti-dilutive shares (in shares)	4,944	2,337
Series B Convertible Preferred Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total anti-dilutive shares (in shares)	28,563	27,176

Segment Reporting - Additional

Segment Reporting - Additional Information (Details)	3 Months Ended
Segment Reporting - Additional Information (Details)	Sep. 30, 2024 segment
Segment Reporting [Abstract]
Number of segments	3

Segment Reporting - Schedule of

Segment Reporting - Schedule of Financial Information by Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Jun. 30, 2024
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	$ 1,348,135	$ 1,053,083
Share-based compensation	(35,478)	(44,524)
Interest expense	(66,644)	(73,258)
Other income, net	(10,749)	(6,269)
Earnings (loss) before income taxes	19,303	(88,297)
Expenditures for property, plant, and equipment	91,984	62,197
Segment assets and reconciliation to total assets	14,699,300	13,521,298	$ 14,488,634
2023 Restructuring Plan
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Restructuring charges	(24,000)	(3,000)
Networking
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	762,872	472,849
Networking \| 2023 Restructuring Plan
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Restructuring charges		2,000
Materials
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	237,427	244,640
Materials \| 2023 Restructuring Plan
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Restructuring charges	(24,000)	(5,000)
Lasers
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	347,836	335,594
Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	1,348,135	1,053,083
Segment profit	305,708	177,908
Operating Segments \| Networking
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	762,872	472,849
Segment profit	140,276	67,193
Expenditures for property, plant, and equipment	48,686	17,493
Segment assets and reconciliation to total assets	3,495,881	3,200,796
Operating Segments \| Materials
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	237,427	244,640
Segment profit	96,647	57,815
Expenditures for property, plant, and equipment	33,796	40,512
Segment assets and reconciliation to total assets	2,911,978	2,027,164
Operating Segments \| Lasers
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	347,836	335,594
Segment profit	68,785	52,900
Expenditures for property, plant, and equipment	9,502	4,192
Segment assets and reconciliation to total assets	7,536,963	7,569,884
Unallocated
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	(148,159)	(101,268)
Intersegment
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	0	0
Intersegment \| Networking
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	14,427	12,887
Intersegment \| Materials
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	132,168	87,742
Intersegment \| Lasers
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	1,564	639
Unallocated Corporate items:
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Corporate and centralized function costs	(73,102)	(45,535)
Share-based compensation	(35,478)	(44,524)
Restructuring charges	(24,364)	(3,018)
Integration, site consolidated and other costs	(25,702)	(33,074)
Amortization of intangibles	(71,862)	(72,662)
Start-up costs	0	(403)
Interest expense	(66,644)	(73,258)
Other income, net	10,749	6,269
Earnings (loss) before income taxes	19,303	(88,297)
Segment assets and reconciliation to total assets	754,478	723,454
Consulting costs related to projects to integrate recent acquisitions	12,000	7,000
Charges for products that are end-of-life	4,000	7,000
Severance related to the retirement of executives	1,000	2,000
Unallocated Corporate items: \| 2023 Restructuring Plan
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Manufacturing inefficiencies, employee severance and retention costs and duplicative labor	$ 9,000	$ 17,000

Share-Based Compensation - Addi

Share-Based Compensation - Additional Information (Details) - shares	Oct. 11, 2024	Jun. 03, 2024	Aug. 28, 2023	Sep. 30, 2024	Nov. 30, 2023
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Market price of common stock			85%
Consecutive offering period			6 months
Employee Stock Purchase Plan \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee stock purchase plan of payroll deductions			10%
Employee Stock Purchase Plan \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee stock purchase plan of payroll deductions			15%
Employee Stock Purchase Plan \| Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock authorized for issuance under the plan (in shares)					13,450,000
Employee Stock Purchase Plan \| Coherent, Inc. Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted (in shares)				0
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Units granted (in shares)		147,214
Award vesting period		3 years
RSUs \| Share-Based Payment Arrangement, Tranche One \| Subsequent Event
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Units granted (in shares)	15,902
Award vesting period	3 years
RSUs \| Share-Based Payment Arrangement, Tranche Two \| Subsequent Event
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Units granted (in shares)	63,154
Award vesting period	2 years
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Units granted (in shares)		694,007
Award vesting period		3 years
Performance Shares \| Subsequent Event
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Units granted (in shares)	118,853
Award vesting period	3 years

Share-Based Compensation - Sche

Share-Based Compensation - Schedule of Expense by Award Type (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense	$ 35,478	$ 44,524
Stock Options and Cash-Based Stock Appreciation Rights
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense	417	(1,057)
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	23,769	31,065
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	8,992	10,845
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense	$ 2,300	$ 3,671

Fair Value of Financial Instr_3

Fair Value of Financial Instruments - Additional Information (Details) - USD ($)	3 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 01, 2024	Aug. 31, 2024	Jun. 30, 2024	Mar. 20, 2023	Feb. 28, 2023	Jun. 30, 2022	Feb. 23, 2022	Nov. 24, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, statement of financial position	Prepaid and other current assets				Prepaid and other current assets
Restricted cash	$ 763,000,000				$ 864,000,000
Realized gains (losses) on derivatives	16,000,000	$ (11,000,000)
Silicon Carbide
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted cash	757,000,000				858,000,000
Other Entities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted cash	5,000,000				5,000,000
Interest Rate Swap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notional amount							$ 825,000,000	$ 825,000,000		$ 1,075,000,000
Fixed interest rate						0.10%				1.52%
Floor interest rate						1.42%				0%
Derivative asset					8,000,000
Interest Rate Cap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notional amount			$ 1,500,000,000	$ 500,000,000
Fixed interest rate									0.853%
Derivative asset	$ 22,000,000				$ 50,000,000
SOFR percentage of derivative									1.92%
Interest Rate Cap \| Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notional amount									$ 500,000,000
Interest Rate Cap \| Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notional amount									$ 1,500,000,000

Fair Value of Financial Instr_4

Fair Value of Financial Instruments - Schedule of Fair Value and Carrying Value of Debt Facilities (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Jun. 30, 2024
Fair Value \| Senior Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt facilities	$ 969,220	$ 938,193
Fair Value \| Term A Facility
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt facilities	763,088	777,564
Fair Value \| Term B Facility
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt facilities	2,269,116	2,390,497
Carrying Value \| Senior Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt facilities	984,301	984,061
Carrying Value \| Term A Facility
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt facilities	757,107	762,039
Carrying Value \| Term B Facility
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt facilities	$ 2,232,728	$ 2,334,701

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Loss) (Details) $ in Thousands	3 Months Ended
	Sep. 30, 2024 USD ($)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance-beginning of period	$ 5,581,507
Balance-end of period	5,871,994
Total Accumulated Other Comprehensive Income (Loss)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance-beginning of period	2,640
Other comprehensive income (loss) before reclassifications	281,915
Amounts reclassified from AOCI	(11,102)
Net current-period other comprehensive income (loss)	270,813
Balance-end of period	273,453
Foreign Currency Translation Adjustment
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance-beginning of period	(26,092)
Other comprehensive income (loss) before reclassifications	289,723
Amounts reclassified from AOCI	0
Net current-period other comprehensive income (loss)	289,723
Balance-end of period	263,631
Interest Rate Swap/Interest Rate Cap \| Interest Rate Swap
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance-beginning of period	(3,401)
Other comprehensive income (loss) before reclassifications	9,060
Amounts reclassified from AOCI	(5,659)
Net current-period other comprehensive income (loss)	3,401
Balance-end of period	0
Interest Rate Swap/Interest Rate Cap \| Interest Rate Cap
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance-beginning of period	39,317
Other comprehensive income (loss) before reclassifications	(16,713)
Amounts reclassified from AOCI	(5,443)
Net current-period other comprehensive income (loss)	(22,156)
Balance-end of period	17,161
Defined Benefit Pension Plan
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance-beginning of period	(7,184)
Other comprehensive income (loss) before reclassifications	(155)
Amounts reclassified from AOCI	0
Net current-period other comprehensive income (loss)	(155)
Balance-end of period	$ (7,339)

Restructuring Plan - Additional

Restructuring Plan - Additional Information (Details) - May 2023 Restructuring Plan - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Restructuring Cost and Reserve [Line Items]
Restructuring costs (recoveries)	$ 24	$ 3
Materials
Restructuring Cost and Reserve [Line Items]
Restructuring costs (recoveries)	24	5
Networking
Restructuring Cost and Reserve [Line Items]
Restructuring costs (recoveries)		$ (2)
Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring accrual, current	14
Restructuring accrual, noncurrent	$ 30

Restructuring Plan - Schedule o

Restructuring Plan - Schedule of Components and Restructuring Charges and Payments (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Restructuring Reserve [Roll Forward]
Restructuring charges (recoveries)	$ 18,352	$ 319
May 2023 Restructuring Plan
Restructuring Reserve [Roll Forward]
Beginning Balance	51,061	64,379
Restructuring charges (recoveries)	24,365	3,018
Payments	(6,796)	(7,930)
Asset write-offs and other	(24,820)	(968)
Ending Balance	43,810	58,499
May 2023 Restructuring Plan \| Severance
Restructuring Reserve [Roll Forward]
Beginning Balance	51,061	64,379
Restructuring charges (recoveries)	(455)	2,050
Payments	(6,796)	(7,930)
Asset write-offs and other	0	0
Ending Balance	43,810	58,499
May 2023 Restructuring Plan \| Asset Write-Offs
Restructuring Reserve [Roll Forward]
Beginning Balance	0	0
Restructuring charges (recoveries)	15,970	269
Payments	0	0
Asset write-offs and other	(15,970)	(269)
Ending Balance	0	0
May 2023 Restructuring Plan \| Other
Restructuring Reserve [Roll Forward]
Beginning Balance	0	0
Restructuring charges (recoveries)	8,850	699
Payments	0	0
Asset write-offs and other	(8,850)	(699)
Ending Balance	$ 0	$ 0