---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-25-021973"
form_type: "8-K"
ticker: null
cik: "0001651407"
company_name: "Checkpoint Therapeutics, Inc."
filed_at: "2025-03-10T23:59:59+00:00"
generated_at: "2026-05-25T01:35:44.603005+00:00"
event_type: "m_and_a"
sentiment: "positive"
materiality_score: 0.85
calibrated_materiality_score: 0.85
confidence: "high"
source: SEC EDGAR
---

# Checkpoint Therapeutics to be acquired by Sun Pharma for $4.10/share plus CVR

## Summary
- Total transaction value up to ~$416M; $4.10 per share cash plus CVR up to $0.70.
- CVR pays up to $0.70 based on EMA approval of cosibelimab in EU or key countries within 36 months of filing.
- Fortress Biotech (11.2% of shares, majority voting power) agrees to vote in favor and waive appraisal.
- Merger subject to stockholder vote, HSR clearance, and other conditions; termination fee of $12.5M.
- Company adopted exclusive forum bylaw for derivative and Securities Act claims.

## SEC filing metadata
- accession: 0001104659-25-021973
- form_type: 8-K
- cik: 0001651407
- company_name: Checkpoint Therapeutics, Inc.
- filed_at: 2025-03-10T23:59:59+00:00
- event_type: m_and_a
- sentiment: positive
- materiality_score: 0.85
- calibrated_materiality_score: 0.85
- confidence: high
- sec_items: 1.01, 5.03, 8.01, 9.01, 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1651407/000110465925021973/0001104659-25-021973-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1651407/000110465925021973/tm258581d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-25-021973
- JSON: https://secwatch.observer/filing/0001104659-25-021973.json
- Plain text: https://secwatch.observer/filing/0001104659-25-021973.txt

## Key facts
- Governance Changes
  Checkpoint Therapeutics, Inc.: The board adopted an amendment to the bylaws establishing exclusive forum provisions for certain internal and securities claims, effective upon execution of the Merger Agreement (effective 2025-03-09).
  - Change: bylaw amendment
  - Effective: 2025-03-09
  source text: the Company Board adopted an amendment (the “ Bylaws Amendment ”) to the bylaws of the Company (the “ Bylaws ”), which became effective concurrently with the execution of the Merger Agreement.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1651407/000110465925021973/0001104659-25-021973-index.htm

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