---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-23-020879"
form_type: "8-K"
ticker: "CARM"
cik: "0001485003"
company_name: "Carisma Therapeutics Inc."
filed_at: "2023-02-14T23:59:59+00:00"
generated_at: "2026-06-19T13:37:47.011112+00:00"
event_type: "m_and_a"
sentiment: "positive"
materiality_score: 0.85
calibrated_materiality_score: 0.85
confidence: "high"
source: SEC EDGAR
---

# Sesen Bio raises special dividend to $75M, extends CVR through 2027; activist investors back merger

## Summary
- Special cash dividend increased to $75M ($0.36/share) from prior ~$70M; up from original $25M.
- CVR period for Vicineum proceeds extended from Dec 31, 2023 to March 31, 2027.
- Bradley Radoff and Michael Torok (8.7% stake) vote for merger; Torok to join Carisma board.
- Special meeting to approve merger set for March 2, 2023; closing expected Q1 2023.

## SEC filing metadata
- accession: 0001104659-23-020879
- form_type: 8-K
- ticker: CARM
- cik: 0001485003
- company_name: Carisma Therapeutics Inc.
- filed_at: 2023-02-14T23:59:59+00:00
- event_type: m_and_a
- sentiment: positive
- materiality_score: 0.85
- calibrated_materiality_score: 0.85
- confidence: high
- sec_items: 1.01, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1485003/000110465923020879/0001104659-23-020879-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1485003/000110465923020879/tm236507d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-23-020879
- JSON: https://secwatch.observer/filing/0001104659-23-020879.json
- Plain text: https://secwatch.observer/filing/0001104659-23-020879.txt

## Key facts
- Material Agreements
  Carisma Therapeutics Inc. amended Second Amendment to the Merger Agreement with Sesen Bio, Inc., Seahawk Merger Sub, Inc., and CARISMA Therapeutics Inc. (effective 2023-02-13).
  - Action: amendment
  - Agreement: merger
  - Counterparty: Sesen Bio, Inc., Seahawk Merger Sub, Inc., and CARISMA Therapeutics Inc.
  - Effective: 2023-02-13
  source text: On February 13, 2023, Sesen Bio, Merger Sub and Carisma entered into the Second Amendment to the Merger Agreement (the “Second Amendment”).
  evidence_url: https://www.sec.gov/Archives/edgar/data/1485003/000110465923020879/0001104659-23-020879-index.htm

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