---
schema_version: "secwatch.filing_event.v1"
accession: "0001829126-23-004162"
form_type: "8-K"
ticker: "MCAG"
cik: "0001859035"
company_name: "Mountain Crest Acquisition Corp. V"
filed_at: "2023-06-14T23:59:59+00:00"
generated_at: "2026-06-14T01:34:55.386817+00:00"
event_type: "other_material"
sentiment: "negative"
materiality_score: 0.85
calibrated_materiality_score: 0.85
confidence: "high"
source: SEC EDGAR
---

# Mountain Crest's merger with AUM Biosciences terminated by AUM on June 8, 2023

## Summary
- AUM Biosciences sent termination notice on June 8, 2023, ending the Business Combination Agreement with Mountain Crest.
- The original agreement was dated October 19, 2022, and amended three times before termination.
- Transaction would have resulted in combined company trading as AUMB on Nasdaq.
- SPAC had filed a registration statement and mailed proxy; termination nullifies those efforts.

## SEC filing metadata
- accession: 0001829126-23-004162
- form_type: 8-K
- ticker: MCAG
- cik: 0001859035
- company_name: Mountain Crest Acquisition Corp. V
- filed_at: 2023-06-14T23:59:59+00:00
- event_type: other_material
- sentiment: negative
- materiality_score: 0.85
- calibrated_materiality_score: 0.85
- confidence: high
- sec_items: 1.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1859035/000182912623004162/0001829126-23-004162-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1859035/000182912623004162/mountaincrest5_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001829126-23-004162
- JSON: https://secwatch.observer/filing/0001829126-23-004162.json
- Plain text: https://secwatch.observer/filing/0001829126-23-004162.txt

## Key facts
- Material Agreements
  Mountain Crest Acquisition Corp. V terminated Business Combination Agreement with AUM Biosciences Pte. Ltd. valued at Termination notice received from AUM; Business Combination Agreement terminated as of June 8, 2023. (effective 2023-06-08).
  - Action: termination
  - Agreement: merger
  - Counterparty: AUM Biosciences Pte. Ltd.
  - Value: Termination notice received from AUM; Business Combination Agreement terminated as of June 8, 2023.
  - Effective: 2023-06-08
  source text: Item 1.02. Termination of a Material Definitive Agreement As previously disclosed, on October 19, 2022, Mountain Crest Acquisition Corp. V (“Mountain Crest” or “SPAC”) and AUM Biosciences Pte. Ltd., a private company limited by shares incorporated in Singapore, with company registration number 201810204D (“AUM” or the “Company”) entered into that certain Business Combination Agreement (as amended, supplemented or otherwise modified from time to time, the “Business Combination Agreement”), which was subsequently amended on February 10, 2023, March 30, 2023 and April 19, 2023. On January 27, 2023, AUM Biosciences Limited, a Cayman Islands exempted company (“Holdco”), AUM Biosciences Subsidiary Pte. Ltd., a private company limited by shares incorporated in Singapore, with company registration number 202238778Z and a direct, wholly-owned subsidiary of Holdco, and AUM Biosciences Delaware Merger Sub, Inc., a Delaware corporation and a direct, wholly-owned subsidiary of Holdco, executed a jo
  evidence_url: https://www.sec.gov/Archives/edgar/data/1859035/000182912623004162/0001829126-23-004162-index.htm

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