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  4. [Form 4] COHERENT CORP. Insider Trading Activity

Coherent CTO sells 13,077 shares after stock awards

Filing Impact
(Very High)
Filing Sentiment
(Very Negative)
Form Type
4

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.

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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.
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
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

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.

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SEC Form 4
FORM 4UNITED 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)
Director10% Owner
XOfficer (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)
XForm 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)
CodeVAmount(A) or (D)Price
Common Stock08/28/2026A5,373(1)A$055,006(2)D
Common Stock08/28/2026A11,960(3)A$066,966D
Common Stock08/28/2026F12,862(4)D$295.3954,104D
Common Stock08/31/2026S(5)7,047D$276.8319(6)47,057D
Common Stock09/01/2026S(7)6,030D$270.6876(8)41,027D
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount 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-Fact09/01/2026
** Signature of Reporting PersonDate
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)

Source: View Original Filing on SEC EDGAR