# EDGAR Filing Document

**Accession Number:** 0001410830
**File Stem:** 0001438934-25-002494
**Filing Date:** 2025-8
**Character Count:** 4642
**Document Hash:** 14441ad9f905c53ef11ab3186854e964
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001438934-25-002494.hdr.sgml**: 20250829

**ACCESSION NUMBER**: 0001438934-25-002494

**CONFORMED SUBMISSION TYPE**: N-PX

**PUBLIC DOCUMENT COUNT**: 2

**CONFORMED PERIOD OF REPORT**: 20250630

**FILED AS OF DATE**: 20250829

**EFFECTIVENESS DATE**: 20250829

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Matrix Capital Management Company, LP
- **CENTRAL INDEX KEY:** 0001410830

**ORGANIZATION NAME:**
- **EIN:** 043475951
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** N-PX
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 028-12595
- **FILM NUMBER:** 251275599

**BUSINESS ADDRESS:**
- **STREET 1:** 3 PLEASANT STREET, SUITE 400
- **STREET 2:** C/O MATRIX CAPITAL MANAGEMENT
- **CITY:** PORTSMOUTH
- **STATE:** NH
- **ZIP:** 03801
- **BUSINESS PHONE:** 781-522-4948

**MAIL ADDRESS:**
- **STREET 1:** 3 PLEASANT STREET, SUITE 400
- **STREET 2:** C/O MATRIX CAPITAL MANAGEMENT
- **CITY:** PORTSMOUTH
- **STATE:** NH
- **ZIP:** 03801

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Matrix Capital Management Company, LLC
- **DATE OF NAME CHANGE:** 20070827

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

## N-PX: Filer Information

**Filer CIK:** 0001410830

**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:** Matrix Capital Management Company, LP

**Address:** 3 Pleasant Street, Portsmouth, NH 03801

**Telephone number:** 6309569145

**Name of agent for service:** —

**Agent Address:** —, —, — —

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

**SEC File Number:** 028-12595

**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?:**

- [x] No

- [ ] Yes

**Additional information:** —

## N-PX: Summary - Included Managers

**Number of Included Institutional Managers:** 0

**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   |
|:---|:---|:---|:---|:---|---:|---:|:---|---:|:---|:---|
| ALTAIR ENGINEERING INC.        | 021369103 | 01/22/2025     | To approve on an advisory (non-binding) basis the compensation that may be paid or become payable to Altair's named executive officers that is based on or otherwise relates to the merger. | SECTION 14A SAY-ON-PAY VOTES |       12427813 |                0 | FOR         |                                 12427813 | FOR                         |  |
| PERIMETER SOLUTIONS INC        | 71385M107 | 05/29/2025     | To approve, on an advisory basis, the compensation of our named executive officers ("Say on Pay").                                                                                          | SECTION 14A SAY-ON-PAY VOTES |         325000 |                0 | FOR         |                                   325000 | FOR                         |  |
| ZENTALIS PHARMACEUTICALS, INC. | 98943L107 | 06/17/2025     | To approve, on an advisory (non-binding) basis, the compensation of our named executive officers.                                                                                           | SECTION 14A SAY-ON-PAY VOTES |       13959973 |                0 | FOR         |                                 13959973 | FOR                         |  |

## N-PX: Signature Block

**Reporting Person:** Matrix Capital Management Company, LP

**By (Signature):** Joseph Downing

**By (Printed Signature):** Joseph Downing

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

**Date:** 08/27/2025