Form 5500 · Employee benefit plan · WATERTOWN, MA
C4 THERAPEUTICS, INC.
C4 THERAPEUTICS, INC. of WATERTOWN, MA files a Form 5500 with the U.S. Department of Labor disclosing its employee benefit plan. Its broker of record is MERCER HEALTH AND BENEFITS, LLC. Coverage is written through BLUE CROSS BLUE SHIELD OF MASSACHUSETTS, INC. and 4 other carriers. The plan's most recent policy period ended in December.
Sourced from U.S. DOL EFAST2 Form 5500 · EIN 47-5617627 · plan 501 · as of Jul 2026
Schedule A insurance contracts
| Carrier | Benefits | Covered | Renews | Commission |
|---|---|---|---|---|
| BLUE CROSS BLUE SHIELD OF MASSACHUSETTS, INC. | Health | 269 | December | $36,340 |
| SUN LIFE ASSURANCE COMPANY OF CANADA | Life, Disability | 104 | December | $6,611 |
| DENTAL SERVICE OF MASSACHUSETTS, INC. | Dental | 275 | December | $5,663 |
| FIDELITY SECURITY LIFE INSURANCE COMPANY | Vision | 266 | December | $1,508 |
| FEDERAL INSURANCE COMPANY | — | 104 | December | $0 |
Questions
Who is C4 THERAPEUTICS, INC.'s benefits broker?
Per its most recent Form 5500 Schedule A, C4 THERAPEUTICS, INC.'s broker of record is MERCER HEALTH AND BENEFITS, LLC.
What insurance carrier does C4 THERAPEUTICS, INC. use?
C4 THERAPEUTICS, INC.'s benefit plan is written through BLUE CROSS BLUE SHIELD OF MASSACHUSETTS, INC., among 5 disclosed carriers.
When does C4 THERAPEUTICS, INC.'s group plan renew?
The most recent Schedule A policy period for C4 THERAPEUTICS, INC. ended in December. Group plans typically renew on the same annual cycle.
Where does this data come from?
All figures are drawn from C4 THERAPEUTICS, INC.'s public Form 5500 filing with the U.S. Department of Labor (EFAST2). Form 5500 is a public record.