Statement of Changes in Beneficial Ownership (Form 4)

FORM 4 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 that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES 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

(Print or Type Responses)

1. Name and Address of Reporting Person * Mocciaro Ilaria 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 (Last) (First) (Middle) C/O COHERENT CORP., 375 SAXONBURG BOULEVARD 3. Date of Earliest Transaction (Month/Day/Year) 11/28/2025 (Street) SAXONBURG, PA 16056 4. If Amendment, Date 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 (City) (State) (Zip) 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) Code V Amount (A) or (D) Price 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

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
	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 control number.		SEC 1474 (9-02)

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 Underlying Securities (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 of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Mocciaro Ilaria C/O COHERENT CORP. 375 SAXONBURG BOULEVARD SAXONBURG, PA 16056			Chief Accounting Officer

Signatures

/s/ Christopher M. Forrester, Attorney-in-Fact		10/07/2026
**Signature of Reporting Person		Date

Explanation of Responses:

*	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).
(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.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure. Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB number.