Coherent CFO granted 8,731 RSUs, shares withheld

Rhea-AI Filing Summary

COHERENT CORP. (COHR) reported equity compensation and related tax withholding for CFO and Treasurer Sherri R. Luther. On August 28, 2026, she received a grant of 8,731 shares of common stock in the form of restricted stock units. One-third of these units will vest on August 28, 2027, with the remaining two-thirds vesting in eight equal quarterly installments beginning November 28, 2027. On the same date, 2,594 shares were withheld by the company at $295.39 per share to satisfy her tax obligations, which the company states does not represent an open-market sale. Footnote disclosure also states that her holdings include 243 shares acquired through Coherent Corp.'s employee stock purchase plan.

Insider Trade Summary

Net Buyer: 6,137 shares

Net Buy 2 txns

Insider Luther Sherri R

Role CFO and Treasurer

Type	Security	Shares	Price	Value
Grant/Award	Common Stock F1, F2	8,731	$0.00	$0.00
Tax Withholding	Common Stock F3	2,594	$295.39	$766K

Holdings After Transaction: Common Stock — 70,855 shares (Direct)

Footnotes (3)

1. F1. These shares represent a restricted stock unit award granted to the reporting person. One-third (1/3) of the restricted stock units will vest on August 28, 2027, and the remaining two-thirds (2/3) of the restricted stock units will vest in eight equal quarterly installments beginning on November 28, 2027.
2. F2. Includes 243 shares acquired in non-reportable transactions through Coherent Corp.'s employee stock purchase plan.
3. F3. These shares were withheld by the company to discharge tax obligations of the reporting person and do not constitute an actual sale or other open market transaction.

Key Figures

Restricted stock units granted: 8,731 shares Tax-withheld shares: 2,594 shares Tax withholding price per share: $295.39 per share +3 more

6 metrics

Restricted stock units granted 8,731 shares RSU award to CFO and Treasurer on August 28, 2026

Tax-withheld shares 2,594 shares Shares withheld to discharge CFO tax obligations on August 28, 2026

Tax withholding price per share $295.39 per share Value applied to 2,594 withheld shares for tax obligations

ESPP shares included in holdings 243 shares Shares acquired through Coherent Corp.'s employee stock purchase plan

RSU vesting schedule initial tranche 1/3 of 8,731 RSUs Vests on August 28, 2027

Remaining RSU vesting 2/3 of 8,731 RSUs Vests in eight equal quarterly installments beginning November 28, 2027

Key Terms

restricted stock unit, employee stock purchase plan, tax obligations

3 terms

restricted stock unit financial

"These shares represent a restricted stock unit award granted to the reporting person."

A restricted stock unit is a promise from a company to give an employee shares of stock after certain conditions are met, like staying with the company for a set amount of time. It’s like earning a bonus that turns into company stock once you’ve proven your commitment, making it a way to motivate and reward employees.

employee stock purchase plan financial

"Includes 243 shares acquired in non-reportable transactions through Coherent Corp.'s employee stock purchase plan."

An employee stock purchase plan is a company program that lets workers buy shares through small payroll deductions, often at a discount to the market price and after a set offering period. Think of it like a workplace savings plan that turns into ownership: it encourages employees to share in the company’s success and can create predictable buying or selling of stock that investors watch because it affects supply, demand and employee incentives.

tax obligations financial

"These shares were withheld by the company to discharge tax obligations of the reporting person"

FAQ

What equity award did COHR grant to CFO Sherri R. Luther on August 28, 2026?

On August 28, 2026, Coherent Corp. granted CFO Sherri R. Luther a restricted stock unit award covering 8,731 shares of common stock. One-third vests on August 28, 2027, and the remaining two-thirds vest in eight equal quarterly installments beginning November 28, 2027.

How will the 8,731 RSUs granted to the COHR CFO vest over time?

The 8,731 restricted stock units granted to the COHR CFO vest as follows: one-third on August 28, 2027, and the remaining two-thirds in eight equal quarterly installments starting November 28, 2027, according to the company’s disclosure.

How many COHR shares were withheld to cover the CFO’s tax obligations?

Coherent Corp. reports that 2,594 shares of common stock were withheld from the CFO on August 28, 2026, to discharge her tax obligations. The shares were valued at $295.39 per share and the company states this did not involve an open-market transaction.

Was the tax-related withholding for the COHR CFO an open-market sale?

No. The company states that the 2,594 shares withheld to satisfy the CFO’s tax obligations on August 28, 2026, “do not constitute an actual sale or other open market transaction”, but were retained by the company for tax payment purposes.

Does the COHR CFO hold shares acquired through an employee stock purchase plan?

Yes. Coherent Corp. discloses that the CFO’s holdings include 243 shares acquired in non-reportable transactions through Coherent Corp.'s employee stock purchase plan, in addition to the reported equity award activity.

What is the role of Sherri R. Luther in COHR related to this Form 4 filing?

Sherri R. Luther is identified as Coherent Corp.’s CFO and Treasurer. The Form 4 reports a restricted stock unit grant of 8,731 shares to her and a related 2,594-share tax-withholding transaction on August 28, 2026.

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Available on EDGAR 09/01/2026 - 09:08 PM Accepted by SEC EDGAR 09/01/2026 - 09:07 PM Learn about SEC filing dates

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^*

Luther Sherri R

(Last) (First) (Middle)

C/O COHERENT CORP.

375 SAXONBURG BOULEVARD

(Street)

SAXONBURG PENNSYLVANIA 16056

(City) (State) (Zip)

UNITED STATES

(Country)

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)
	CFO and Treasurer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/28/2026

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

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

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

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	08/28/2026		A		8,731(1)	A	$0	73,449(2)	D
Common Stock	08/28/2026		F		2,594(3)	D	$295.39	70,855	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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. These shares represent a restricted stock unit award granted to the reporting person. One-third (1/3) of the restricted stock units will vest on August 28, 2027, and the remaining two-thirds (2/3) of the restricted stock units will vest in eight equal quarterly installments beginning on November 28, 2027.

2. Includes 243 shares acquired in non-reportable transactions through Coherent Corp.'s employee stock purchase plan.

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

	/s/ Christopher M. Forrester, Attorney-in-Fact	09/01/2026
	** 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: SEC 1474 (03-26)