# EDGAR Filing Document

**Accession Number:** 0001224172
**File Stem:** 0000947871-25-000767
**Filing Date:** 2025-8
**Character Count:** 7826
**Document Hash:** 08691c5dca314c5668a703810b2527d8
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000947871-25-000767.hdr.sgml**: 20250814

**ACCESSION NUMBER**: 0000947871-25-000767

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 2

**CONFORMED PERIOD OF REPORT**: 20250813

**FILED AS OF DATE**: 20250814

**DATE AS OF CHANGE**: 20250814

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** SKAGGS STEPHEN A
- **CENTRAL INDEX KEY:** 0001224172

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-39375
- **FILM NUMBER:** 251219621

**MAIL ADDRESS:**
- **STREET 1:** C/O COHERENT CORP.
- **STREET 2:** 5100 PATRICK HENRY DRIVE
- **CITY:** SANTA CLARA
- **STATE:** CA
- **ZIP:** 95054
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** COHERENT CORP.
- **CENTRAL INDEX KEY:** 0000820318
- **STANDARD INDUSTRIAL CLASSIFICATION:** OPTICAL INSTRUMENTS & LENSES [3827]
- **ORGANIZATION NAME:** 08 Industrial Applications and Services
- **EIN:** 251214948
- **STATE OF INCORPORATION:** PA
- **FISCAL YEAR END:** 0630

**BUSINESS ADDRESS:**
- **STREET 1:** 375 SAXONBURG BLVD
- **CITY:** SAXONBURG
- **STATE:** PA
- **ZIP:** 16056
- **BUSINESS PHONE:** 724-352-4455

**MAIL ADDRESS:**
- **STREET 1:** 375 SAXONBURG BLVD
- **CITY:** SAXONBURG
- **STATE:** PA
- **ZIP:** 16056

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** II-VI INC
- **DATE OF NAME CHANGE:** 19920703

## Ex-24

**SUBSTITUTE POWER OF ATTORNEY**

Under the terms of powers of attorney (each, a "Power of Attorney") previously filed with the U.S. Securities and Exchange Commission, the undersigned, Aaron Wax, was appointed an attorney-in-fact to, among other things, execute for and on behalf of the following individuals any Forms 3, 4 and 5 or any amendments thereto, in accordance with Section 16(a) of the Securities Exchange Act of 1934, as amended, and the rules thereunder:

Stephen Skaggs

Julie S. Eng

Sandeep Vij

David L. Motley

Ilaria Mocciaro

Elizabeth A. Patrick

Michelle Sterling

James R. Anderson

Sherri Renee Luther

Robert P. Beard

In accordance with the authority granted under each Power of Attorney, including the full power of substitution, the undersigned hereby appoints Chris Forrester and Yian Huang as substitute attorneys-in-fact, on behalf of the individuals listed above, with the power to exercise and execute all of the powers granted or conferred in the original Power of Attorney. By their signatures as attorneys-in-fact to this Substitute Power of Attorney, Chris Forrester and Yian Huang accept such appointment and agree to assume from the undersigned any and all duties and responsibilities attendant to their capacity as attorneys-in-fact.

For the avoidance of doubt, the foregoing appointment shall not serve as a revocation of the powers granted to the undersigned himself in each Power of Attorney.

This Substitute Power of Attorney shall remain in full force and effect until the underlying Power of Attorney is revoked or terminated, unless earlier revoked by the undersigned in a signed writing.

IN WITNESS WHEREOF, the undersigned has caused this Substitute Power of Attorney to be executed as of March <u>18</u>, 2025.

Signature: <u>/s/ Aaron Wax</u> <br> Name: Aaron Wax

We accept this appointment and substitution:

Signature: <u>/s/ Chris Forrester</u> <br> Name: Chris Forrester

Signature: <u>/s/ Yian Huang</u> <br> Name: Yian Huang

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

[ ] 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**<sup>*</sup><br>SKAGGS STEPHEN A<br><sub>(Last) (First) (Middle)</sub><br>C/O COHERENT CORP.<br>375 SAXONBURG BOULEVARD<br><sub>(Street)</sub><br>SAXONBURG, PA 16056<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2025-08-13 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[X] Director [ ] 10% Owner<br>[ ] Officer (give title below) [ ] Other (specify below)<br>_ _ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>COHERENT CORP. [ COHR ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| Common Stock | 2025-08-13 |  | S<sup>(1)</sup> |  | 2000 | D | $122.23 | 23836 | D |  |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

---

### Footnotes:

(1) The sale transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 21, 2024.

**Remarks:**
Exhibit 24 - Power of Attorney

**Signature:** /s/ Christopher M. Forrester, Attorney-in-Fact  
**Date:** 2025-08-14

### Remarks:

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.**