---
schema_version: "secwatch.filing_event.v1"
accession: "0001213900-25-055641"
form_type: "8-K"
ticker: "MBAV"
cik: "0002016072"
company_name: "M3-Brigade Acquisition V Corp."
filed_at: "2025-06-18T23:59:59+00:00"
generated_at: "2026-05-19T03:40:54.731875+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# M3-Brigade Acquisition V Corp enters $2.5M promissory note with sponsor, expands board to seven

## Summary
- Up to $2.5M promissory note issued to M17 Sponsor, LLC; $500K drawn on June 18, 2025 for working capital.
- Note bears no interest, due upon consummation of initial business combination; repayment limited to funds outside trust account if no deal.
- Board expanded from 5 to 7 directors; Paul W. Kopsky Jr. (Class III) and Franklin Tsung (Class II) appointed effective June 13, 2025.
- Kopsky appointed to Audit Committee as chair and designated as audit committee financial expert.

## SEC filing metadata
- accession: 0001213900-25-055641
- form_type: 8-K
- ticker: MBAV
- cik: 0002016072
- company_name: M3-Brigade Acquisition V Corp.
- filed_at: 2025-06-18T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 1.01, 2.03, 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/2016072/000121390025055641/0001213900-25-055641-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/2016072/000121390025055641/ea0246167-8k_m3brigade5.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001213900-25-055641
- JSON: https://secwatch.observer/filing/0001213900-25-055641.json
- Plain text: https://secwatch.observer/filing/0001213900-25-055641.txt

## Key facts
- Debt Financings
  M3-Brigade Acquisition V Corp. incurred loan of up to an aggregate principal amount of $2,500,000 with M17 Sponsor, LLC at no interest maturing upon the consummation of the Company's initial business combination.
  - Instrument: loan
  - Principal: up to an aggregate principal amount of $2,500,000
  - Counterparty: M17 Sponsor, LLC
  - Rate: no interest
  - Maturity: upon the consummation of the Company's initial business combination
  - Event: incurrence
  source text: On June 16, 2025, M3-Brigade Acquisition V Corp. (the “ Company ”) issued a promissory note (the “ Note ”) to M17 Sponsor, LLC (the “ Sponsor ”), the Company’s sponsor, pursuant to which the Company can borrow up to an aggregate principal amount of $2,500,000 from the Sponsor. On June 18, 2025, the Company borrowed $500,000 under the Note.
  evidence_url: https://www.sec.gov/Archives/edgar/data/2016072/000121390025055641/0001213900-25-055641-index.htm
- Executive change
  Paul W. Kopsky, Jr. was appointed as Class III member of the Board at M3-Brigade Acquisition V Corp..
  - Action: appointed
  - Role: Class III member of the Board
  source text: the Board appointed (i) Paul W. Kopsky, Jr. as a Class III member of the Board
  evidence_url: https://www.sec.gov/Archives/edgar/data/2016072/000121390025055641/0001213900-25-055641-index.htm

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