Tax withheld4

COHERENT CORP.

Total Value

$338.7K

Filing Date

Oct 7, 2026

1 transactions

Trade Summary

On Nov 28, 2025, Mocciaro Ilaria, Insider, reported $338.7K of COHERENT CORP. (COHR) across 1 transactions. The filing covers Common Stock and reflects balanced net activity of $0. Reported prices ranged from $154.00 to $258.93. Insider transactions are sourced from SEC Form 4 disclosures and should be reviewed alongside company fundamentals and the insider's broader trading history.

Insider Information

Name: Mocciaro Ilaria
Role: Insider
Location: SAXONBURG, PA

Filing Details

Filing Date: Oct 7, 2026
Transaction Date: Nov 28, 2025
Accession Number: 0000899140-26-001100
Form Type: 4

Non-Derivative Transactions

Date	Security	Shares	Price	Type	Value
—	Common Stock	1,130	$154.00	Tax Withholding	$174.0K
—	Common Stock	636	$258.93	Tax Withholding	$164.7K

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Footnotes

(F1)This transaction was inadvertently reported late due to an administrative error and not through any fault of the reporting person.
(F2)Withheld shares are in connection with the vesting of a restricted stock unit award of 7,647 shares granted to the reporting person on November 28, 2024. The restricted stock units vest in three annual installments beginning November 28, 2025.
(F3)These shares were withheld by the company to discharge withholding tax obligations of the reporting person and do not constitute an actual sale or other open market transaction.
(F4)Reflects holdings as of November 28, 2025 and does not reflect previously reported transactions occurring after such date.
(F5)The amount of securities beneficially owned reported on the reporting person's Form 4 filed on December 3, 2025 did not reflect the disposition of 1,130 shares reported herein on November 28, 2025. The reporting person beneficially owned 22,903 shares following the transaction reported on December 3, 2025. The amount of securities beneficially owned reported on the reporting person's Form 4 filed on September 1, 2026 reflects the dispositions reported herein.
(F6)Withheld shares are in connection with the vesting of a restricted stock unit award of 6,261 shares granted to the reporting person on February 28, 2023. The restricted stock units vest in three annual installments beginning February 28, 2024.
(F7)Reflects holdings as of February 28, 2026 and does not reflect previously reported transactions occurring after such date.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Mocciaro Ilaria

(Last)

(First)

(Middle)

C/O COHERENT CORP.

375 SAXONBURG BOULEVARD

(Street)

SAXONBURG

16056

(City)

(State)

(Zip)

2. Issuer Name and Ticker or Trading Symbol
COHERENT CORP. [ COHR ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	Chief Accounting Officer

3. Date of Earliest Transaction (Month/Day/Year)
11/28/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	11/28/2025⁽¹⁾		F		1,130⁽²⁾⁽³⁾	D	$154	24,280⁽⁴⁾⁽⁵⁾	D
Common Stock	02/28/2026⁽¹⁾		F		636⁽³⁾⁽⁶⁾	D	$258.93	22,267⁽⁷⁾	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. This transaction was inadvertently reported late due to an administrative error and not through any fault of the reporting person.

2. Withheld shares are in connection with the vesting of a restricted stock unit award of 7,647 shares granted to the reporting person on November 28, 2024. The restricted stock units vest in three annual installments beginning November 28, 2025.

3. These shares were withheld by the company to discharge withholding tax obligations of the reporting person and do not constitute an actual sale or other open market transaction.

4. Reflects holdings as of November 28, 2025 and does not reflect previously reported transactions occurring after such date.

5. The amount of securities beneficially owned reported on the reporting person's Form 4 filed on December 3, 2025 did not reflect the disposition of 1,130 shares reported herein on November 28, 2025. The reporting person beneficially owned 22,903 shares following the transaction reported on December 3, 2025. The amount of securities beneficially owned reported on the reporting person's Form 4 filed on September 1, 2026 reflects the dispositions reported herein.

6. Withheld shares are in connection with the vesting of a restricted stock unit award of 6,261 shares granted to the reporting person on February 28, 2023. The restricted stock units vest in three annual installments beginning February 28, 2024.

7. Reflects holdings as of February 28, 2026 and does not reflect previously reported transactions occurring after such date.

	/s/ Christopher M. Forrester, Attorney-in-Fact	10/07/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

Form 4 as rendered by the SEC from accession 0000899140-26-001100.

COHERENT CORP.

Trade Summary

Company Information

Insider Information

Filing Details

Non-Derivative Transactions

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Footnotes

SEC Form 4

SEC Filing

SEC Form 4