Employer with a benefit plan ยท SEC filer
C4 THERAPEUTICS, INC.
490 ARSENAL WAY, WATERTOWN, MA 02472
EIN
47-5617627
SEC CIK
0001662579
SEC · 2026-08-14
Industry (SIC)
Biological Products, (No Diagnostic Substances) (2836)
SEC · 2026-08-14
State of incorporation
DE
SEC · 2026-08-14
Ticker
CCCC
SEC · 2026-08-14
Latest SEC filing
144 2026-08-14
SEC · 2026-08-14
Benefit plan 1, 2024 filing
C4 THERAPEUTICS, INC. 401(K) PLAN
DOL · 2025-09-11
Participants (start of year)
199
DOL · 2025-09-11
Plan features
code 2E2F2G2J2K2S2T3D
DOL · 2025-09-11
Plan type
Single-employer plan
DOL · 2025-09-11
Business code (NAICS)
541700
DOL · 2025-09-11
Benefit plan 501, 2024 filing
C4 THERAPEUTICS, INC. HEALTH AND WELFARE PLAN
DOL · 2025-07-21
Participants (start of year)
148
DOL · 2025-07-21
Plan features
code 4A4B4D4E4F4H4L
DOL · 2025-07-21
Plan type
Single-employer plan
DOL · 2025-07-21