Bain Capital Life Sciences Fund II, L.P. - 17 Oct 2025 SCHEDULE 13G Report for C4 Therapeutics, Inc. Common Stock, par value $0.0001 per share (CCCC)

Filing Manager
Bain Capital Life Sciences Fund II, L.P.
Reporting Manager
BCLS II Equity Opportunities, LP
Security
C4 Therapeutics, Inc. Common Stock, par value $0.0001 per share
Symbol
CCCC
Shares outstanding
96,960,000 shares
Disclosed Ownership
6,060,000 shares
Ownership
6.2%
Form type
SCHEDULE 13G
Filing time
24 Oct 2025, 16:30:06 UTC
Date of event
17 Oct 2025
SEC
View on sec.gov

Reporting Managers (3)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
Bain Capital Life Sciences Fund II, L.P. 1.1% 991,188 0 991,188 /s/ Andrew Hack Andrew Hack, Partner of Bain Capital Life Sciences Investors, LLC
BCIP Life Sciences Associates, LP 0.13% 120,722 0 120,722 /s/ Andrew Hack Andrew Hack, Authorized Signatory of Boylston Coinvestors, LLC
BCLS II Equity Opportunities, LP 6.2% 6,060,000 0 6,060,000 /s/ Andrew Hack Andrew Hack, Partner of Bain Capital Life Sciences Investors, LLC