---
schema_version: "secwatch.filing_event.v1"
accession: "0000950142-25-003127"
form_type: "8-K"
ticker: "MBVI"
cik: "0002073928"
company_name: "M3-Brigade Acquisition VI Corp."
filed_at: "2025-12-05T23:59:59+00:00"
generated_at: "2026-05-16T14:22:41.947759+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.25
calibrated_materiality_score: 0.25
confidence: "high"
source: SEC EDGAR
---

# M3-Brigade Acquisition VI appoints Frank M. Garrison, Jr. as independent director

## Summary
- Appointed as independent director effective December 2, 2025.
- Appointed to Audit and Compensation Committees of the Board.
- Entered into standard letter agreement and indemnity agreement with the Company.
- Mr. Garrison has no pre-existing arrangements or related-party transactions requiring disclosure.

## SEC filing metadata
- accession: 0000950142-25-003127
- form_type: 8-K
- ticker: MBVI
- cik: 0002073928
- company_name: M3-Brigade Acquisition VI Corp.
- filed_at: 2025-12-05T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.25
- calibrated_materiality_score: 0.25
- confidence: high
- sec_items: 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/2073928/000095014225003127/0000950142-25-003127-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/2073928/000095014225003127/eh250713100_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950142-25-003127
- JSON: https://secwatch.observer/filing/0000950142-25-003127.json
- Plain text: https://secwatch.observer/filing/0000950142-25-003127.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.