---
schema_version: "secwatch.filing_event.v1"
accession: "0001213900-25-084538"
form_type: "8-K"
ticker: "MBVI"
cik: "0002073928"
company_name: "M3-Brigade Acquisition VI Corp."
filed_at: "2025-09-04T23:59:59+00:00"
generated_at: "2026-05-17T08:22:58.357703+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.55
calibrated_materiality_score: 0.55
confidence: "high"
source: SEC EDGAR
---

# M3-Brigade Acquisition VI closes $345M IPO and $8M private placement

## Summary
- IPO of 34.5M units at $10.00/unit, gross proceeds $345M, including full over-allotment.
- Private placement of 5,333,333 warrants at $1.50/warrant, gross proceeds $8M.
- Net proceeds of $345M placed in trust account held by Continental Stock Transfer.
- No business combination target selected; company has 24 months to complete deal.
- Audited balance sheet as of Aug 28, 2025 filed as Exhibit 99.1.

## SEC filing metadata
- accession: 0001213900-25-084538
- form_type: 8-K
- ticker: MBVI
- cik: 0002073928
- company_name: M3-Brigade Acquisition VI Corp.
- filed_at: 2025-09-04T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.55
- calibrated_materiality_score: 0.55
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/2073928/000121390025084538/0001213900-25-084538-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/2073928/000121390025084538/ea0255547-8k_m3brigade6.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001213900-25-084538
- JSON: https://secwatch.observer/filing/0001213900-25-084538.json
- Plain text: https://secwatch.observer/filing/0001213900-25-084538.txt

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