10 insiders reported 70 Form 4 transactions for C4 Therapeutics, Inc. (CCCC) over the past 18 months (most recent 2026-07-02). Recent activity: GROGAN DONNA ROY (Director) Buy 3,341 shares, Anderson Kenneth Carl (Director) Buy 2,650 shares, GROGAN DONNA ROY (Director) Buy 5,370 shares, Anderson Kenneth Carl (Director) Buy 4,259 shares, Mossler Mark (Chief Accounting Officer) Buy 56,980 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-07-02 | GROGAN DONNA ROY | Director | Buy | 3,341 | $14,500 |
| 2026-07-02 | Anderson Kenneth Carl | Director | Buy | 2,650 | $11,501 |
| 2026-04-03 | GROGAN DONNA ROY | Director | Buy | 5,370 | $14,499 |
| 2026-04-03 | Anderson Kenneth Carl | Director | Buy | 4,259 | $11,499 |
| 2026-02-18 | Mossler Mark | Chief Accounting Officer | Buy | 56,980 | $0 |
| 2026-02-18 | Boyle Scott N | Chief Business Officer | Buy | 5,000 | $0 |
| 2026-02-18 | Boyle Scott N | Chief Business Officer | Sell | 1,735 | $3,279 |
| 2026-02-18 | Boyle Scott N | Chief Business Officer | Buy | 20,950 | $0 |
| 2026-02-18 | Boyle Scott N | Chief Business Officer | Sell | 7,269 | $13,738 |
| 2026-02-18 | Mahaney Paige | Chief Scientific Officer | Buy | 240,000 | $0 |
| 2026-02-18 | Mahaney Paige | Chief Scientific Officer | Buy | 7,050 | $0 |
| 2026-02-18 | Mahaney Paige | Chief Scientific Officer | Sell | 2,446 | $4,623 |
| 2026-02-18 | Boyle Scott N | Chief Business Officer | Buy | 200,000 | $0 |
| 2026-02-18 | Mossler Mark | Chief Accounting Officer | Buy | 9,420 | $0 |
| 2026-02-18 | Mossler Mark | Chief Accounting Officer | Sell | 3,268 | $6,177 |
| 2026-02-18 | REYNO LEONARD | Chief Medical Officer | Buy | 240,000 | $0 |
| 2026-02-18 | REYNO LEONARD | Chief Medical Officer | Buy | 30,950 | $0 |
| 2026-02-18 | REYNO LEONARD | Chief Medical Officer | Sell | 16,579 | $31,334 |
| 2026-02-18 | Adams Kendra | Chief Financial Officer | Buy | 240,000 | $0 |
| 2026-02-18 | Adams Kendra | Chief Financial Officer | Buy | 3,750 | $0 |
| 2026-02-18 | Adams Kendra | Chief Financial Officer | Sell | 1,863 | $3,521 |
| 2026-02-18 | Adams Kendra | Chief Financial Officer | Buy | 30,950 | $0 |
| 2026-02-18 | Adams Kendra | Chief Financial Officer | Sell | 15,381 | $29,070 |
| 2026-02-18 | Schick Kelly | Chief People Officer | Buy | 200,000 | $0 |
| 2026-02-18 | Schick Kelly | Chief People Officer | Buy | 5,000 | $0 |
Source: SEC Form 4 filings · as of 2026-07-02