---
schema_version: "secwatch.filing_event.v1"
accession: "0001140361-24-017769"
form_type: "8-K"
ticker: null
cik: "0001838108"
company_name: "RMG Acquisition Corp. III"
filed_at: "2024-04-04T23:59:59+00:00"
generated_at: "2026-06-04T02:27:32.358857+00:00"
event_type: "other_material"
sentiment: "negative"
materiality_score: 0.8
calibrated_materiality_score: 0.8
confidence: "high"
source: SEC EDGAR
---

# RMG Acquisition Corp. III terminates merger agreement with H2B2 Electrolysis after missing March 31 deadline

## Summary
- Company delivered termination notice to H2B2 on April 1, 2024, effective March 31, 2024.
- Merger Agreement terminated because closing did not occur on or before March 31, 2024.
- Related Support Agreements with H2B2 stockholders and RMG Sponsor III LLC also terminated.
- SPAC now must seek new business combination target or face potential liquidation.

## SEC filing metadata
- accession: 0001140361-24-017769
- form_type: 8-K
- cik: 0001838108
- company_name: RMG Acquisition Corp. III
- filed_at: 2024-04-04T23:59:59+00:00
- event_type: other_material
- sentiment: negative
- materiality_score: 0.8
- calibrated_materiality_score: 0.8
- confidence: high
- sec_items: 1.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1838108/000114036124017769/0001140361-24-017769-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1838108/000114036124017769/ef20026030_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001140361-24-017769
- JSON: https://secwatch.observer/filing/0001140361-24-017769.json
- Plain text: https://secwatch.observer/filing/0001140361-24-017769.txt

## Key facts
- Material Agreements
  RMG Acquisition Corp. III terminated Agreement and Plan of Merger with H2B2 Electrolysis, Inc. (effective 2024-03-31).
  - Action: termination
  - Agreement: merger
  - Counterparty: H2B2 Electrolysis, Inc.
  - Effective: 2024-03-31
  source text: On April 1, 2024, the Company delivered a termination notice to H2B2 notifying it that the Company was exercising its right to terminate the Merger Agreement effective March 31, 2024, since the closing of the transactions contemplated by the Merger Agreement had not occurred on or prior to March 31, 2024.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1838108/000114036124017769/0001140361-24-017769-index.htm

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