# EDGAR Filing Document

**Accession Number:** 0002073928
**File Stem:** 9999999995-25-002745
**Filing Date:** 2025-8
**Character Count:** 1294
**Document Hash:** b5d2a928f828a3c815955dfb7bc797a5
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**9999999995-25-002745.hdr.sgml**: 20250827

**ACCESSION NUMBER**: 9999999995-25-002745

**CONFORMED SUBMISSION TYPE**: EFFECT

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20250826

**DATE AS OF CHANGE**: 20250827

**EFFECTIVENESS DATE**: 20250826

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** M3-Brigade Acquisition VI Corp.
- **CENTRAL INDEX KEY:** 0002073928
- **STANDARD INDUSTRIAL CLASSIFICATION:** BLANK CHECKS [6770]
- **ORGANIZATION NAME:** 05 Real Estate & Construction
- **EIN:** 000000000
- **STATE OF INCORPORATION:** E9
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** EFFECT
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-289225
- **FILM NUMBER:** 251259525

**BUSINESS ADDRESS:**
- **STREET 1:** 1700 BROADWAY, 19TH FLOOR
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10019
- **BUSINESS PHONE:** 212-202-2200

**MAIL ADDRESS:**
- **STREET 1:** 1700 BROADWAY, 19TH FLOOR
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10019

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

## Notice of Effectiveness

**Date:** August 26, 2025

**Time:** 16:30:00

**Form Type:** S-1

---

**CIK:** 0002073928

**Company Name:** M3-Brigade Acquisition VI Corp.

**File Number:** 333-289225