Coherent CTO sells 13,077 shares after stock awards

Julie Sheridan Eng’s Form 4 shows Rule 10b5-1 sales of 13,077 COHR shares in late Aug/early Sep 2026 after the company withheld 12,862 shares for taxes.

Rhea-AI Filing Summary

COHERENT CORP. (COHR) reported Form 4 transactions by Chief Technology Officer Julie Sheridan Eng involving equity awards and sales of common stock. On August 28, 2026, she acquired 5,373 shares as a restricted stock unit award and 11,960 shares issued upon payout of Performance Stock Units granted in August 2023; 12,862 shares were withheld by the company at $295.39 per share to satisfy tax withholding obligations. On August 31 and September 1, 2026, she sold 7,047 and 6,030 shares, respectively, at weighted-average prices of $276.83 and $270.69, in transactions effected under a Rule 10b5-1 trading plan adopted on November 21, 2025.

Insider Trade Summary 10b5-1

Net Seller: 13,077 shares

Net Sell 5 txns

Insider Eng Julie Sheridan

Role Chief Technology Officer

Sold 13,077 shs ($3.58M)

Type	Security	Shares	Price	Value
Sale	Common Stock F7, F8	6,030	$270.6876	$1.63M
Sale	Common Stock F5, F6	7,047	$276.8319	$1.95M
Grant/Award	Common Stock F1, F2	5,373	$0.00	$0.00
Grant/Award	Common Stock F3	11,960	$0.00	$0.00
Tax Withholding	Common Stock F4	12,862	$295.39	$3.80M

Holdings After Transaction: Common Stock — 41,027 shares (Direct)

Footnotes (8)

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 197 shares acquired in non-reportable transactions through Coherent Corp.'s employee stock purchase plan.
3. F3. Represents shares issued upon payout of Performance Stock Units granted in August 2023.
4. F4. 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.
5. F5. The sale transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 21, 2025.
6. F6. Represents the weighted average of multiple sale transactions ranging in price from $275.20 to $281.69. The reporting person agrees to provide full information regarding the number of shares sold at each separate price upon request by the SEC staff, the Company or a security holder of the Company.
7. F7. The sale transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 21, 2025.
8. F8. Represents the weighted average of multiple sale transactions ranging in price from $265.61 to $275.36. The reporting person agrees to provide full information regarding the number of shares sold at each separate price upon request by the SEC staff, the Company or a security holder of the Company.

Key Figures

RSU award shares: 5,373 shares Performance Stock Units payout shares: 11,960 shares Shares withheld for taxes: 12,862 shares at $295.39 per share +5 more

8 metrics

RSU award shares 5,373 shares Restricted stock unit award granted on August 28, 2026

Performance Stock Units payout shares 11,960 shares Shares issued upon payout of PSUs granted in August 2023

Shares withheld for taxes 12,862 shares at $295.39 per share Withheld on August 28, 2026 to discharge withholding tax obligations

Shares sold August 31, 2026 7,047 shares at $276.8319 per share Open-market or private sale pursuant to Rule 10b5-1 plan

Shares sold September 1, 2026 6,030 shares at $270.6876 per share Open-market or private sale pursuant to Rule 10b5-1 plan

Tax-withholding transaction shares in summary 12,862 shares Exercise price or tax liability category in transaction summary

Net buy/sell shares 13,077 shares net-sell Net buy/sell direction across reported buy/sell transactions

ESPP shares included 197 shares Acquired through Coherent Corp.'s employee stock purchase plan

Key Terms

restricted stock unit, Performance Stock Units, Rule 10b5-1 trading plan, withholding tax obligations, +1 more

5 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.

Performance Stock Units financial

"Represents shares issued upon payout of Performance Stock Units granted in August 2023"

Performance stock units are a type of company award that grants employees shares of stock only if certain performance goals are met. They motivate employees to work toward specific company achievements, aligning their interests with those of shareholders. For investors, they can influence a company's future stock supply and reflect management’s confidence in reaching key targets.

Rule 10b5-1 trading plan regulatory

"The sale transaction was effected pursuant to a Rule 10b5-1 trading plan"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

withholding tax obligations financial

"shares were withheld by the company to discharge withholding tax obligations"

weighted average financial

"Represents the weighted average of multiple sale transactions ranging in price"

A weighted average is a way of calculating an overall number when some items matter more than others by giving each item a different level of importance, or weight. Investors use weighted averages to combine figures like prices, returns or earnings so the result reflects the size or significance of each part — like grading a class where a final exam counts more than a quiz, producing a score that better represents true performance.

FAQ

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

What did COHR Chief Technology Officer Julie Sheridan Eng acquire in this Form 4?

She acquired 5,373 shares as a restricted stock unit award and 11,960 shares issued upon payout of Performance Stock Units granted in August 2023, all on August 28, 2026. These awards were in the form of Coherent Corp. common stock.

How many COHR shares did Julie Sheridan Eng sell and at what prices?

She sold 7,047 shares on August 31, 2026 at a weighted-average price of $276.83 per share, and 6,030 shares on September 1, 2026 at a weighted-average price of $270.69 per share, in open-market or private transactions.

Were the COHR share sales by Julie Sheridan Eng under a Rule 10b5-1 plan?

Yes. Footnotes state that both sale transactions on August 31, 2026 and September 1, 2026 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 21, 2025.

How many COHR shares were withheld for taxes in this filing?

On August 28, 2026, 12,862 shares of Coherent Corp. common stock were withheld by the company at $295.39 per share to discharge the reporting person’s withholding tax obligations, and this did not constitute an open market sale.

How do the newly granted COHR restricted stock units vest?

For the 5,373 restricted stock units granted on August 28, 2026, one-third will vest on August 28, 2027, and the remaining two-thirds will vest in eight equal quarterly installments beginning on November 28, 2027, according to the footnote description.

Does the Form 4 mention COHR employee stock purchase plan shares?

Yes. A footnote states that the reported holdings include 197 shares acquired in non-reportable transactions through Coherent Corp.’s employee stock purchase plan, which are part of the total reported ownership for the restricted stock unit award transaction.

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

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Available on EDGAR 09/01/2026 - 09:06 PM EDT Accepted by SEC EDGAR 09/01/2026 - 09:06 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).

X

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^*

Eng Julie Sheridan

(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 Technology Officer

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		5,373(1)	A	$0	55,006(2)	D
Common Stock	08/28/2026		A		11,960(3)	A	$0	66,966	D
Common Stock	08/28/2026		F		12,862(4)	D	$295.39	54,104	D
Common Stock	08/31/2026		S(5)		7,047	D	$276.8319(6)	47,057	D
Common Stock	09/01/2026		S(7)		6,030	D	$270.6876(8)	41,027	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 197 shares acquired in non-reportable transactions through Coherent Corp.'s employee stock purchase plan.

3. Represents shares issued upon payout of Performance Stock Units granted in August 2023.

4. 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.

5. The sale transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 21, 2025.

6. Represents the weighted average of multiple sale transactions ranging in price from $275.20 to $281.69. The reporting person agrees to provide full information regarding the number of shares sold at each separate price upon request by the SEC staff, the Company or a security holder of the Company.

7. The sale transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 21, 2025.

8. Represents the weighted average of multiple sale transactions ranging in price from $265.61 to $275.36. The reporting person agrees to provide full information regarding the number of shares sold at each separate price upon request by the SEC staff, the Company or a security holder of the Company.

	/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)