---
schema_version: "secwatch.filing_event.v1"
accession: "0001213900-23-078351"
form_type: "8-K"
ticker: null
cik: "0001856589"
company_name: "M3-Brigade Acquisition III Corp."
filed_at: "2023-09-21T23:59:59+00:00"
generated_at: "2026-06-10T11:10:47.310313+00:00"
event_type: "m_and_a"
sentiment: "neutral"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Greenfire Resources completes business combination with MBSC, lists on NYSE under GFR

## Summary
- Deal valued at US$950M; 95.2% of MBSC shareholders voted in favor.
- MBSC public warrants exchanged for $0.50 each; MBSC delisted from NYSE.
- Greenfire issued US$300M senior secured notes due 2028 at 12% coupon, retired old notes.
- New C$50M revolving credit facilities with Bank of Montreal; pro-forma cash ~C$43M.
- Former Greenfire equity holders hold ~87% of combined company; Matthew Perkal joins board.

## SEC filing metadata
- accession: 0001213900-23-078351
- form_type: 8-K
- cik: 0001856589
- company_name: M3-Brigade Acquisition III Corp.
- filed_at: 2023-09-21T23:59:59+00:00
- event_type: m_and_a
- sentiment: neutral
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 1.01, 2.01, 3.01, 5.01, 5.02, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1856589/000121390023078351/0001213900-23-078351-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1856589/000121390023078351/ea185502-8k425_m3briga3.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001213900-23-078351
- JSON: https://secwatch.observer/filing/0001213900-23-078351.json
- Plain text: https://secwatch.observer/filing/0001213900-23-078351.txt

## Key facts
- Executive change
  Charles Garner departed as Executive Vice President and Secretary at M3-Brigade Acquisition III Corp..
  - Action: ceased
  - Role: Executive Vice President and Secretary
  source text: Charles Garner ceased to be Executive Vice President and Secretary
  evidence_url: https://www.sec.gov/Archives/edgar/data/1856589/000121390023078351/0001213900-23-078351-index.htm
- Executive change
  William Gallagher departed as Executive Vice President at M3-Brigade Acquisition III Corp..
  - Action: ceased
  - Role: Executive Vice President
  source text: William Gallagher ceased to be Executive Vice President
  evidence_url: https://www.sec.gov/Archives/edgar/data/1856589/000121390023078351/0001213900-23-078351-index.htm
- Executive change
  Chris Chaice departed as Executive Vice President at M3-Brigade Acquisition III Corp..
  - Action: ceased
  - Role: Executive Vice President
  source text: Chris Chaice ceased to be Executive Vice President
  evidence_url: https://www.sec.gov/Archives/edgar/data/1856589/000121390023078351/0001213900-23-078351-index.htm
- Executive change
  Mohsin Y. Meghji departed as Director at M3-Brigade Acquisition III Corp..
  - Action: ceased
  - Role: Director
  source text: the following individuals also ceased to be directors of MBSC: Frederick Arnold; Alan Carr; Benjamin Fader Rattner; Mohsin Y. Meghji
  evidence_url: https://www.sec.gov/Archives/edgar/data/1856589/000121390023078351/0001213900-23-078351-index.htm
- Executive change
  Steven Vincent departed as Director at M3-Brigade Acquisition III Corp..
  - Action: ceased
  - Role: Director
  source text: the following individuals also ceased to be directors of MBSC: Frederick Arnold; Alan Carr; Benjamin Fader Rattner; Mohsin Y. Meghji; Scott Malpass; William Transier; and Steven Vincent
  evidence_url: https://www.sec.gov/Archives/edgar/data/1856589/000121390023078351/0001213900-23-078351-index.htm
- Executive change
  Frederick Arnold departed as Director at M3-Brigade Acquisition III Corp..
  - Action: ceased
  - Role: Director
  source text: the following individuals also ceased to be directors of MBSC: Frederick Arnold
  evidence_url: https://www.sec.gov/Archives/edgar/data/1856589/000121390023078351/0001213900-23-078351-index.htm
- Executive change
  Christopher Good departed as Chief Financial Officer at M3-Brigade Acquisition III Corp..
  - Action: ceased
  - Role: Chief Financial Officer
  source text: Christopher Good ceased to be Chief Financial Officer
  evidence_url: https://www.sec.gov/Archives/edgar/data/1856589/000121390023078351/0001213900-23-078351-index.htm
- Executive change
  Matthew Perkal departed as Chief Executive Officer at M3-Brigade Acquisition III Corp..
  - Action: ceased
  - Role: Chief Executive Officer
  source text: Matthew Perkal ceased to be Chief Executive Officer
  evidence_url: https://www.sec.gov/Archives/edgar/data/1856589/000121390023078351/0001213900-23-078351-index.htm
- Executive change
  Benjamin Fader Rattner departed as Director at M3-Brigade Acquisition III Corp..
  - Action: ceased
  - Role: Director
  source text: the following individuals also ceased to be directors of MBSC: Frederick Arnold; Alan Carr; Benjamin Fader Rattner
  evidence_url: https://www.sec.gov/Archives/edgar/data/1856589/000121390023078351/0001213900-23-078351-index.htm
- Executive change
  Alan Carr departed as Director at M3-Brigade Acquisition III Corp..
  - Action: ceased
  - Role: Director
  source text: the following individuals also ceased to be directors of MBSC: Frederick Arnold; Alan Carr
  evidence_url: https://www.sec.gov/Archives/edgar/data/1856589/000121390023078351/0001213900-23-078351-index.htm
- Executive change
  William Transier departed as Director at M3-Brigade Acquisition III Corp..
  - Action: ceased
  - Role: Director
  source text: the following individuals also ceased to be directors of MBSC: Frederick Arnold; Alan Carr; Benjamin Fader Rattner; Mohsin Y. Meghji; Scott Malpass; William Transier
  evidence_url: https://www.sec.gov/Archives/edgar/data/1856589/000121390023078351/0001213900-23-078351-index.htm
- Executive change
  Scott Malpass departed as Director at M3-Brigade Acquisition III Corp..
  - Action: ceased
  - Role: Director
  source text: the following individuals also ceased to be directors of MBSC: Frederick Arnold; Alan Carr; Benjamin Fader Rattner; Mohsin Y. Meghji; Scott Malpass
  evidence_url: https://www.sec.gov/Archives/edgar/data/1856589/000121390023078351/0001213900-23-078351-index.htm
- Executive change
  Matthew Perkal was appointed as Director at M3-Brigade Acquisition III Corp..
  - Action: became a director
  - Role: Director
  source text: Matthew Perkal became a director of PubCo immediately following the Business Combination.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1856589/000121390023078351/0001213900-23-078351-index.htm
- M&A Transactions
  M3-Brigade Acquisition III Corp. underwent a change of control involving Greenfire Resources Ltd. (PubCo) (closed 2023-09-20).
  - Action: change of control
  - Counterparty: Greenfire Resources Ltd. (PubCo)
  - Closing: 2023-09-20
  source text: On September 20, 2023, the Business Combination was consummated in accordance with the terms of the Business Combination Agreement. As a result of the Business Combination, MBSC became a wholly-owned subsidiary of PubCo.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1856589/000121390023078351/0001213900-23-078351-index.htm

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