# EDGAR Filing Document

**Accession Number:** 0001910890
**File Stem:** 0001193125-25-278372
**Filing Date:** 2025-11
**Character Count:** 7907
**Document Hash:** 4d5fe0ce7186c7bc7c80d53a3940b5db
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-25-278372.hdr.sgml**: 20251112

**ACCESSION NUMBER**: 0001193125-25-278372

**CONFORMED SUBMISSION TYPE**: SCHEDULE 13D/A

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20251112

**DATE AS OF CHANGE**: 20251112

**SUBJECT COMPANY**: 

**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

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13D/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-39319
- **FILM NUMBER:** 251475058

**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
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** BCPE Watson (DE) BML, LP
- **CENTRAL INDEX KEY:** 0001910890

**ORGANIZATION NAME:**
- **EIN:** 863818006
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13D/A

**BUSINESS ADDRESS:**
- **STREET 1:** 200 CLARENDON STREET
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02116
- **BUSINESS PHONE:** 6175162000

**MAIL ADDRESS:**
- **STREET 1:** 200 CLARENDON STREET
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02116

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

## SCHEDULE 13D

### Under the Securities Exchange Act of 1934

**(Amendment No. 2)**

**Coherent Corp.**

*(Name of Issuer)*

**Common Stock, no par value**

*(Title of Class of Securities)*

**19247G107**

*(CUSIP Number)*

**Bain Capital Investors, LLC**<br>200 Claredon Street<br>Boston MA 02116<br>617-516-2000

*(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)*

**11/07/2025**

*(Date of Event Which Requires Filing of this Statement)*

| **CUSIP No.** | **19247G107** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**BCPE Watson (DE) BML, LP** | Name of reporting person<br>**BCPE Watson (DE) BML, LP** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**WC** | Source of funds (See Instructions)<br>**WC** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**DELAWARE** | Citizenship or place of organization<br>**DELAWARE** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**22368245.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**22368245.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**22368245.00** | Aggregate amount beneficially owned by each reporting person<br>**22368245.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**11.9%** | Percent of class represented by amount in Row (11)<br>**11.9%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**PN** | Type of Reporting Person (See Instructions)<br>**PN** | |

---

**Comment for Reporting Person:** Rows 8, 10 and 11: The Reporting Person holds 20,977 shares of Series B-1 Preferred Stock and 140,000 shares of Series B-2 Preferred Stock. Pursuant to the terms of the Statement with Respect to Shares, such shares were convertible into an aggregate of 22,368,245 shares of Common Stock at the sole discretion of the Reporting Person.

Row 13: Based on (i) 157,153,611 shares of Common Stock outstanding, as reported by the Issuer in its Quarterly Report on Form 10-Q for the quarterly period ended September 30, 2025, filed with the Securities and Exchange Commission on November 5, 2025, (ii) 7,754,252 shares of Common Stock issued to the Reporting Person upon the conversion of 54,023 shares of Series B-1 Preferred Stock on November 7, 2025 and (iii) 22,368,245 shares of Common Stock issuable to the Reporting Person upon the conversion of Series B-1 Preferred Stock and Series B-2 Preferred Stock held by the Reporting Person.

**Item 1. Security and Issuer**

**(a) Title of Class of Securities:**
Common Stock, no par value

**(b) Name of Issuer:**
Coherent Corp.

**(c) Address of Issuer's Principal Executive Offices:**
375 Saxonburg Boulevard, Saxonburg, PA, 16056

This Amendment No.2 ("Amendment No. 2") to Schedule 13D amends and supplements the statement on Schedule 13D originally filed on July 11, 2022, as amended by Amendment No. 1 to Schedule 13D filed on March 7, 2024 (together, the "Initial Statement"), with respect to shares of Common Stock, no par value (the "Common Stock"), of Coherent Corp., a Pennsylvania corporation (the "Issuer"). Capitalized terms used but not defined herein shall have the meanings ascribed to them in the Initial Statement.

**Item 4. Purpose of Transaction**

Item 4 of the Initial Statement is hereby amended and supplemented to add the following:

Conversion of Convertible Preferred Stock and sale of Common Stock
On November 7, 2025 the Reporting Persons converted 54,023 shares of Series B-1 Convertible Preferred Stock, no par value per share, held by the Reporting Persons into 7,754,252 shares of Common Stock in accordance with the terms of the Statement with Respect to Shares.
On November 7, 2025, the Reporting Person sold 7,500,000 shares of Common Stock in a block trade pursuant to Rule 144 of the Securities Act of 1933 at a price of $143.37 per share, for an aggregate amount of $1,075,275,000.

On November 10, 2025 the Reporting Person distributed an aggregate of 254,252 shares of Common Stock to one or more members or partners of the Reporting Person in connection with certain charitable gifts to be made by such members or partners or their direct and indirect owners, for no consideration.

**Item 5. Interest in Securities of the Issuer**

**(a)**
The information contained in rows 7, 8, 9, 10, 11 and 13 on the cover page of this Schedule 13D and the information set forth or incorporated in Items 2, 3, 4 and 6 is incorporated by reference in its entirety into this Item 5.

**(b)**
The information contained in rows 7, 8, 9, 10, 11 and 13 on the cover page of this Schedule 13D and the information set forth or incorporated in Items 2, 3, 4 and 6 is incorporated by reference in its entirety into this Item 5.

**(c)**
Except as described in Item 4 herein, the Reporting Person has not effected any transactions in the Common Shares during the past sixty days.

### SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** BCPE Watson (DE) BML, LP

**Signature:** /s/ Joseph Robbins

**Name/Title:** Authorized Signatory of BCPE Watson (DE) BML GP, LLC

**Date:** 11/12/2025