CIK 0001662579 · Non-accelerated filer<br>Smaller reporting company
C4 Therapeutics, Inc.
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- CCCC
- Exchange
- Nasdaq
- Industry
- Biological Products, (No Diagnostic Substances)
- FY end
- Dec 31
- Incorporated
- DE
- Entity type
- operating
- EIN
- 475617627
- Phone
- (617) 231-0700
- Business address
- 490 ARSENAL WAY, SUITE 120, WATERTOWN, MA, 02472
- Open-market buys, last 90 days
- $0
- in 0 filings
- Open-market sales, last 90 days
- $0
- in 0 filings
Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.
| Date | Insider | Transaction | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|
| 2026-02-15 | Hirsch Andrew President & CEO | Option exercise | +20,400 | 1,083,991 | ||
| 2026-02-15 | Hirsch Andrew President & CEO | Shares withheld for taxes | −9,057 | $1.89 | $17K | 1,074,934 |
| 2026-02-14 | Boyle Scott N Chief Business Officer | Option exercise | +20,950 | 306,070 | ||
| 2026-02-14 | Boyle Scott N Chief Business Officer | Shares withheld for taxes | −7,269 | $1.89 | $14K | 298,801 |
| 2026-02-14 | Mahaney Paige Chief Scientific Officer | Option exercise | +7,050 | 339,356 | ||
| 2026-02-14 | Mahaney Paige Chief Scientific Officer | Shares withheld for taxes | −2,446 | $1.89 | $5K | 336,910 |
| 2026-02-14 | Schick Kelly Chief People Officer | Option exercise | +20,950 | 307,150 | ||
| 2026-02-14 | Schick Kelly Chief People Officer | Shares withheld for taxes | −7,269 | $1.89 | $14K | 299,881 |
| 2026-02-14 | Hirsch Andrew President & CEO | Option exercise | +81,725 | 1,123,145 | ||
| 2026-02-14 | Hirsch Andrew President & CEO | Shares withheld for taxes | −39,154 | $1.89 | $74K | 1,083,991 |
| 2026-02-14 | REYNO LEONARD Chief Medical Officer | Option exercise | +30,950 | 396,382 | ||
| 2026-02-14 | REYNO LEONARD Chief Medical Officer | Shares withheld for taxes | −16,579 | $1.89 | $31K | 379,803 |
| 2026-02-14 | Adams Kendra Chief Financial Officer | Option exercise | +30,950 | 400,479 | ||
| 2026-02-14 | Adams Kendra Chief Financial Officer | Shares withheld for taxes | −15,381 | $1.89 | $29K | 385,098 |
| 2026-02-14 | Mossler Mark Chief Accounting Officer | Option exercise | +9,420 | 75,184 | ||
| 2026-02-14 | Mossler Mark Chief Accounting Officer | Shares withheld for taxes | −3,268 | $1.89 | $6K | 71,916 |
| 2026-02-13 | Boyle Scott N Chief Business Officer | Grant or award | +200,000 | 307,805 | ||
| 2026-02-13 | Boyle Scott N Chief Business Officer | Option exercise | +5,000 | 307,805 | ||
| 2026-02-13 | Boyle Scott N Chief Business Officer | Shares withheld for taxes | −1,735 | $1.89 | $3K | 306,070 |
| 2026-02-13 | Mahaney Paige Chief Scientific Officer | Grant or award | +240,000 | 339,356 |
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