Coherent withholds 18,284 CFO shares for taxes

The withheld shares related to a restricted stock unit award granted in 2024 and were used for tax withholding, not a market sale.

Rhea-AI Filing Summary

Coherent Corp. Chief Financial Officer Sherri R. Luther had 18,284 common shares withheld on October 12, 2026, to discharge withholding tax obligations tied to vesting of restricted stock units. The company withheld the shares; they did not constitute an actual sale or open-market transaction. The reported per-share price was $312.62, and her directly held common stock position after the transaction was 52,571 shares.

Insider Trade Summary

Tax Withholding: 18,284 shares

Tax Withholding 1 txn

Insider Luther Sherri R

Role Chief Financial Officer

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock F1, F2	18,284	$312.62	$5.72M

Holdings After Transaction: Common Stock — 52,571 shares (Direct)

Footnotes (2)

1. F1. Withheld shares are in connection with the vesting of a restricted stock unit award of 79,056 shares granted to the reporting person on October 11, 2024, of which 15,902 of the restricted stock units vest in three equal annual installments beginning on October 11, 2025, and 63,154 of the restricted stock units vest in two equal annual installments beginning on October 11, 2025.
2. F2. 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.

Key Figures

Common Shares Withheld: 18,284 shares Reported Per-Share Price: $312.62 Direct Common Stock After Transaction: 52,571 shares +3 more

6 metrics

Common Shares Withheld 18,284 shares October 12, 2026; for withholding tax obligations

Reported Per-Share Price $312.62 For the October 12, 2026 transaction

Direct Common Stock After Transaction 52,571 shares Sherri R. Luther's reported position after the transaction

Restricted Stock Unit Award 79,056 shares Granted October 11, 2024

Restricted Stock Units Vesting in Three Equal Annual Installments 15,902 units Beginning October 11, 2025

Restricted Stock Units Vesting in Two Equal Annual Installments 63,154 units Beginning October 11, 2025

Key Terms

restricted stock unit award, withholding tax obligations, open market transaction

3 terms

restricted stock unit award financial

"vesting of a restricted stock unit award of 79,056 shares"

A restricted stock unit award is a promise by a company to give an employee a specified number of company shares at a future date if certain conditions are met, such as staying with the company or hitting performance goals. For investors, these awards matter because they can increase the total number of shares outstanding when converted, diluting existing holders, and they align employees’ incentives with shareholders’ interests much like giving a rising bonus that becomes real only after conditions are satisfied.

withholding tax obligations financial

"discharge withholding tax obligations of the reporting person"

open market transaction financial

"do not constitute an actual sale or other open market transaction"

An open market transaction is a buy or sell of publicly traded securities executed on an exchange or other public trading venue where many buyers and sellers can participate. It matters to investors because these trades change the visible supply and demand for a stock—like shoppers moving prices in a busy marketplace—affecting share price, liquidity (how easily you can trade), and sometimes the balance of ownership.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

Why did COHR CFO Sherri R. Luther have 18,284 shares withheld?

Coherent Corp. says the 18,284 shares were withheld by the company on October 12, 2026, to discharge Sherri R. Luther's withholding tax obligations in connection with vesting of restricted stock units. They did not constitute an actual sale or other open-market transaction; the reported per-share price was $312.62.

What restricted stock unit award was associated with COHR share withholding?

The shares were withheld in connection with a 79,056-share restricted stock unit award granted to Sherri R. Luther on October 11, 2024. Of the award, 15,902 units vest in three equal annual installments beginning October 11, 2025, and 63,154 units vest in two equal annual installments beginning October 11, 2025.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 10/14/2026 - 04:31 PM EDT Accepted by SEC EDGAR 10/14/2026 - 04:30 PM EDT 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)
	Chief Financial Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
10/12/2026

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	10/12/2026		F		18,284(1)(2)	D	$312.62	52,571	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. Withheld shares are in connection with the vesting of a restricted stock unit award of 79,056 shares granted to the reporting person on October 11, 2024, of which 15,902 of the restricted stock units vest in three equal annual installments beginning on October 11, 2025, and 63,154 of the restricted stock units vest in two equal annual installments beginning on October 11, 2025.

2. 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.

	/s/ Christopher M. Forrester, Attorney-in-Fact	10/14/2026
	** 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)