---
schema_version: "secwatch.filing_event.v1"
accession: "0001628280-23-039562"
form_type: "8-K"
ticker: "CCCC"
cik: "0001662579"
company_name: "C4 Therapeutics, Inc."
filed_at: "2023-11-20T23:59:59+00:00"
generated_at: "2026-06-07T23:24:35.555471+00:00"
event_type: "leadership"
sentiment: "positive"
materiality_score: 0.45
calibrated_materiality_score: 0.45
confidence: "high"
source: SEC EDGAR
---

# C4 Therapeutics appoints Owen Hughes to board of directors

## Summary
- Owen Hughes appointed as Class I director, term until 2024 annual meeting.
- Hughes co-founded Cullinan Oncology, raised over $400M in IPO, served as CEO.
- Received options for 52,000 shares vesting over three years under 2020 plan.
- Indemnification agreement entered in same form as other directors.
- Hughes also chairs XOMA, Ikena Oncology; previously on boards of Radius, Translate Bio.

## SEC filing metadata
- accession: 0001628280-23-039562
- form_type: 8-K
- ticker: CCCC
- cik: 0001662579
- company_name: C4 Therapeutics, Inc.
- filed_at: 2023-11-20T23:59:59+00:00
- event_type: leadership
- sentiment: positive
- materiality_score: 0.45
- calibrated_materiality_score: 0.45
- confidence: high
- sec_items: 5.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1662579/000162828023039562/0001628280-23-039562-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1662579/000162828023039562/cccc-20231120.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001628280-23-039562
- JSON: https://secwatch.observer/filing/0001628280-23-039562.json
- Plain text: https://secwatch.observer/filing/0001628280-23-039562.txt

## Key facts
- Executive change
  Owen P. Hughes, Jr. was appointed as Director at C4 Therapeutics, Inc..
  - Action: appointed
  - Role: Director
  source text: On November 16, 2023, the Board of Directors (the “ Board ”) of C4 Therapeutics, Inc. (the “ Company ”), upon the recommendation of the Nominating and Corporate Governance Committee of the Board, appointed Owen P. Hughes, Jr. as a director of the Company.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1662579/000162828023039562/0001628280-23-039562-index.htm

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