# EDGAR Filing Document

**Accession Number:** 0001263048
**File Stem:** 0001438934-25-000684
**Filing Date:** 2025-8
**Character Count:** 6701
**Document Hash:** f6b8886c19778f55c9da27bba36172b6
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001438934-25-000684.hdr.sgml**: 20250812

**ACCESSION NUMBER**: 0001438934-25-000684

**CONFORMED SUBMISSION TYPE**: N-PX

**PUBLIC DOCUMENT COUNT**: 2

**CONFORMED PERIOD OF REPORT**: 20250630

**FILED AS OF DATE**: 20250812

**EFFECTIVENESS DATE**: 20250812

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** MPM ASSET MANAGEMENT LLC
- **CENTRAL INDEX KEY:** 0001263048

**ORGANIZATION NAME:**
- **EIN:** 043351032
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** N-PX
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 028-13379
- **FILM NUMBER:** 251204829

**BUSINESS ADDRESS:**
- **STREET 1:** 399 BOYLSTON STREET, SUITE 1100
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02116
- **BUSINESS PHONE:** 6174259200

**MAIL ADDRESS:**
- **STREET 1:** 399 BOYLSTON STREET, SUITE 1100
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02116

## FORM N-PX
### ANNUAL REPORT OF PROXY VOTING RECORD

## N-PX: Filer Information

**Filer CIK:** 0001263048

**Date of Report:** 06/30/2025

**Are you a Registered Management Investment Company or an Institutional Manager?:** Institutional Manager

**Is this a LIVE or TEST Filing?:** LIVE

**Is this an electronic copy of an official filing submitted in paper format?:** [ ]

### Submission Contact Information
_Not provided in this filing._

### Notification Information
**Notify via Filing Website only?:** [ ]

## N-PX: Cover Page

**Name of reporting person:** MPM Asset Management LLC

**Address:** 399 Boylston Street, Boston, MA 02116

**Telephone number:** 6174259203

**Name of agent for service:** —

**Agent Address:** —, —, — —

**Reporting Period:** Report for the year ended 06/30/2025

**SEC File Number:** 028-13379

**CRD Number (if any):** —

**Other SEC File Number (if any):** —

**LEI (if any):** —

**Report Type (check only one):**

Institutional Manager.

- [x] Institutional Manager Voting Report

- [ ] Institutional Manager Notice Report

- [ ] Institutional Manager Combination Report

Registered Management Investment Company.

- [ ] Fund Voting Report

- [ ] Fund Notice Report

**Do you wish to provide explanatory information pursuant to Special Instruction B.4?:**

- [ ] No

- [x] Yes

**Additional information:** —

## N-PX: Summary - Included Managers

**Number of Included Institutional Managers:** 1

**Included Institutional Managers:** —

## FORM N-PX PROXY VOTING RECORD

| NAME OF ISSUER               | CUSIP     | MEETING DATE   | VOTE DESCRIPTION                                                                                                                                                                                | VOTE CATEGORY                |   SHARES VOTED |   SHARES ON LOAN | HOW VOTED   | SHARES VOTED FOR OR AGAINST MANAGEMENT   | FOR OR AGAINST MANAGEMENT   | OTHER INFO   |
|:---|:---|:---|:---|:---|---:|---:|:---|:---|:---|:---|
| ADAPTIMMUNE THERAPEUTICS PLC | 00653A107 | 05/29/2025     | To approve, on a non-binding, advisory basis, the compensation of the Company's named executive officers for the year ended December 31, 2024.                                                  | SECTION 14A SAY-ON-PAY VOTES |        4411811 |                0 | FOR         | 4411811                                  | FOR                         |  |
| ADAPTIMMUNE THERAPEUTICS PLC | 00653A107 | 05/29/2025     | To approve, on a non-binding, advisory basis, the preferred frequency of future shareholder advisory votes on the compensation of the Company's named executive officers. (Advisory Resolution) | SECTION 14A SAY-ON-PAY VOTES |        4411811 |                0 | 1 YEAR      | 4411811                                  | FOR                         |  |
| REPARE THERAPEUTICS INC.     | 760273102 | 06/17/2025     | To approve, on an advisory basis, the compensation of our named executive officers, as disclosed in the accompanying proxy statement.                                                           | SECTION 14A SAY-ON-PAY VOTES |         871318 |                0 | FOR         | 871318                                   | FOR                         |  |
| DYNE THERAPEUTICS, INC.      | 26818M108 | 05/30/2025     | To vote, on an advisory basis, to approve the compensation of our named executive officers.                                                                                                     | SECTION 14A SAY-ON-PAY VOTES |         682376 |                0 | FOR         | 682376                                   | FOR                         |  |
| DYNE THERAPEUTICS, INC.      | 26818M108 | 05/30/2025     | To hold an advisory vote on the frequency of future advisory votes on the compensation of our named executive officers.                                                                         | SECTION 14A SAY-ON-PAY VOTES |         682376 |                0 | 1 YEAR      | 682376                                   | FOR                         |  |
| REPARE THERAPEUTICS INC.     | 760273102 | 06/17/2025     | To approve, on an advisory basis, the compensation of our named executive officers, as disclosed in the accompanying proxy statement.                                                           | SECTION 14A SAY-ON-PAY VOTES |              0 |                0 |  |  |  |  |
| ADAPTIMMUNE THERAPEUTICS PLC | 00653A107 | 05/29/2025     | To approve, on a non-binding, advisory basis, the compensation of the Company's named executive officers for the year ended December 31, 2024.                                                  | SECTION 14A SAY-ON-PAY VOTES |         397866 |                0 | FOR         | 397866                                   | FOR                         |  |
| ADAPTIMMUNE THERAPEUTICS PLC | 00653A107 | 05/29/2025     | To approve, on a non-binding, advisory basis, the preferred frequency of future shareholder advisory votes on the compensation of the Company's named executive officers. (Advisory Resolution) | SECTION 14A SAY-ON-PAY VOTES |         397866 |                0 | 1 YEAR      | 397866                                   | FOR                         |  |
| REPARE THERAPEUTICS INC.     | 760273102 | 06/17/2025     | To approve, on an advisory basis, the compensation of our named executive officers, as disclosed in the accompanying proxy statement.                                                           | SECTION 14A SAY-ON-PAY VOTES |              0 |                0 |  |  |  |  |

## N-PX: Signature Block

**Reporting Person:** MPM Asset Management LLC

**By (Signature):** Brendan Furey

**By (Printed Signature):** Brendan Furey

**By (Title):** Chief Compliance Officer

**Date:** 08/05/2025