Mossler Mark
SEC insider (Form 3/4/5 filer). CIK 0001992219. Chief Accounting Officer at C4 Therapeutics, Inc. (CCCC). 4 reported Form 4/5 transactions since Sep 2024; latest on Feb 14, 2026. Located in WATERTOWN, MA.
Companies Mossler Mark has filed insider reports for
- C4 Therapeutics, Inc. (CCCC): Officer, Chief Accounting Officer
Mossler Mark
CIK: 0001992219
Transaction Breakdown
Open Market Buys (P)0 (0.0%)
High conviction signal
Open Market Sales (S)0 (0.0%)
Position reduction
Option Exercises (M)1 (25.0%)
Derivative conversions
Awards (A)1 (25.0%)
Compensation grants
Other (G, F, J, C, D, …)2 (50.0%)
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Companies & Roles (1)
CCCC
C4 Therapeutics, Inc.
Officer
Discretionary Trading P&L
Holdings
Transaction History (4 total)
- Feb 14, 2026CCCC
C4 Therapeutics, Inc.
ExerciseDirect9.4K shares- - Feb 14, 2026CCCC
C4 Therapeutics, Inc.
Tax PaymentDirect3.3K shares at avg. $1.89$6K - Feb 13, 2026CCCC
C4 Therapeutics, Inc.
AwardDirect57K shares- - Feb 14, 2025CCCC
C4 Therapeutics, Inc.
Tax PaymentDirect1.6K shares at avg. $3.18$5K
1-4 of 4 transactions