C4 Therapeutics, Inc.
CCCC- Exchange
- Nasdaq
- Industry
- Biological Products, (No Diagnostic Substances)
- SEC CIK
- 0001662579
No open-market purchases or sales by C4 Therapeutics, Inc. insiders were filed in the last 90 days; 147 institutions reported holding it in 13F filings for Q2 2026, worth $547.6M in total; no superinvestor holds it.
Open-market trades, last 90 days
Open-market purchases (P) and sales (S) by C4 Therapeutics, Inc. insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.
- Open-market buys
- 0 filings
- Open-market sells
- 0 filings
- Insiders trading
- 0
- Net value
- $0
- Purchases minus sales
Insider roster
Directors, officers and 10% owners who have filed a Form 4 for C4 Therapeutics, Inc., current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.
| Name | Title | Last reported holding | Last filing | Filings, past year |
|---|---|---|---|---|
| Adams Kendra | Chief Financial Officer | 382,323 | Sep 21, 2026 | 2 |
| Reyno Leonard | Chief Medical Officer | 372,406 | Jul 13, 2026 | 3 |
| Anderson Kenneth Carl | Director | 71,950 | Jul 2, 2026 | 6 |
| Grogan Donna Roy | Director | 74,853 | Jul 2, 2026 | 5 |
| Hoerter Steven L. | Director | – | Jun 26, 2026 | 1 |
| Hughes Owen | Director | – | Jun 26, 2026 | 1 |
| Cooper Ronald Harold Wilfred | Director | – | Jun 26, 2026 | 1 |
| Koppikar Utpal | Director | 5,667 | Jun 26, 2026 | 1 |
| Bessen Laura | Director | – | Jun 26, 2026 | 1 |
| Fawell Stephen | Director | – | Jun 26, 2026 | 1 |
| Hirsch Andrew | President & CEO | 1,074,934 | Feb 18, 2026 | 1 |
| Schick Kelly | Chief People Officer | 299,881 | Feb 18, 2026 | 1 |
| Boyle Scott N | Chief Business Officer | 298,801 | Feb 18, 2026 | 1 |
| Mossler Mark | Chief Accounting Officer | 71,916 | Feb 18, 2026 | 1 |
| Mahaney Paige | Chief Scientific Officer | 336,910 | Feb 18, 2026 | 2 |
| Siegel Jolie | Chief Legal Officer | 107,939 | Feb 18, 2025 | 0 |
| Fisher Stewart | Chief Scientific Officer | 130,710 | Sep 17, 2024 | 0 |
| Downey Bruce | Director | – | Jun 21, 2024 | 0 |
| Salter Malcolm | Director | 11,380 | Jun 21, 2024 | 0 |
| Dubin Glenn | Director | 22,075 | Apr 2, 2024 | 0 |
| White Lauren | Chief Financial Officer | 32,686 | Aug 31, 2023 | 0 |
| Crystal Adam | Chief Medical Officer | 20,097 | Feb 1, 2023 | 0 |
| Cohen Marc A | Director | 1,118 | Jun 23, 2022 | 0 |
| Cohen Alain J | Director | 928 | Apr 5, 2022 | 0 |
| Prokupets Elena | Director | 503,126Indirect | Sep 29, 2021 | 0 |
Insider trades
Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Jan 16, 2026 (view filing) | Jan 16 | Same day | Reyno LeonardChief Medical Officer | SSale | −10.0K | $2.22 | −$22.2K | −6.0%156.4K after | |
| Feb 18, 2025 (view filing) | Feb 14-18 | 4 days | Boyle Scott NChief Business Officer | SSale | −1.16K | $3.15 | −$3.65K | −1.1%107.8K after | 2 lots10b5-1 |
| Feb 10, 2023 (view filing) | Feb 8 | 2 days | Koppikar UtpalDirector | PPurchase | +5.67K | $5.60 | +$31.7K | New position5.67K after | |
| Apr 12, 2022 (view filing) | Apr 12 | Same day | Hirsch AndrewPresident & CEO | PPurchase | +10.0K | $8.40 | +$84.0K | New position10.0K after | |
| Jan 5, 2022 (view filing) | Jan 4 | 1 day | Crystal AdamChief Medical Officer | SSale | −15.0K | $31.67 | −$475.0K | −50.0%15.0K after | 2 lots |
| Dec 17, 2021 (view filing) | Dec 17 | Same day | Salter MalcolmDirector | SSale | −755 | $30.25 | −$22.8K | −6.4%11.0K after | |
| Nov 19, 2021 (view filing) | Nov 19 | Same day | Salter MalcolmDirector | SSale | −755 | $40.11 | −$30.3K | −6.1%11.7K after | |
| Oct 15, 2021 (view filing) | Oct 15 | Same day | Salter MalcolmDirector | SSale | −755 | $44.94 | −$33.9K | −5.7%12.5K after | |
| Oct 5, 2021 (view filing) | Oct 1 | 4 days | Crystal AdamChief Medical Officer | SSale | −15.0K | $45.43 | −$681.4K | −100.0%0 after | 3 lots |
| Sep 29, 2021 (view filing) | Sep 27 | 2 days | Prokupets ElenaDirector | SSale | −1.85K | $50.04 | −$92.6K | −0.4%503.1K after | 2 lots |
| Sep 24, 2021 (view filing) | Sep 22-24 | 2 days | Prokupets ElenaDirector | SSale | −32.7K | $50.28 | −$1.65M | −6.1%504.4K after | 8 lots |
| Sep 21, 2021 (view filing) | Sep 17-21 | 4 days | Prokupets ElenaDirector | SSale | −21.2K | $50.09 | −$1.06M | −3.9%526.4K after | 4 lots |
| Sep 21, 2021 (view filing) | Sep 17 | 4 days | Salter MalcolmDirector | SSale | −755 | $49.89 | −$37.7K | −5.5%12.9K after | |
| Sep 16, 2021 (view filing) | Sep 14-16 | 2 days | Prokupets ElenaDirector | SSale | −81.7K | $48.79 | −$3.98M | −13.8%510.4K after | 7 lots |
| Sep 14, 2021 (view filing) | Sep 10-13 | 4 days | Prokupets ElenaDirector | SSale | −9.21K | $50.05 | −$461.0K | −1.5%588.2K after | 4 lots |
| Sep 14, 2021 (view filing) | Sep 10 | 4 days | Siegel JolieChief Legal Officer | SSale | −12.5K | $50.00 | −$625.0K | −100.0%0 after | |
| Aug 24, 2021 (view filing) | Aug 20 | 4 days | Salter MalcolmDirector | SSale | −755 | $40.73 | −$30.8K | −5.2%13.7K after | |
| Aug 5, 2021 (view filing) | Aug 3 | 2 days | Prokupets ElenaDirector | SSale | −14.4K | $45.16 | −$650.6K | −14.0%88.6K after | |
| Aug 5, 2021 (view filing) | Aug 3 | 2 days | Fisher StewartChief Scientific Officer | SSale | −17.1K | $45.01 | −$767.7K | −42.9%22.7K after | |
| Aug 2, 2021 (view filing) | Jul 29 | 4 days | Siegel JolieChief Legal Officer | SSale | −12.5K | $45.00 | −$562.5K | −100.0%0 after | |
| Aug 2, 2021 (view filing) | Jul 29-Aug 2 | 4 days | Prokupets ElenaDirector | SSale | −15.6K | $45.00 | −$701.7K | −13.2%103.0K after | 2 lots |
| Aug 2, 2021 (view filing) | Jul 29-Aug 2 | 4 days | Fisher StewartChief Scientific Officer | SSale | −68.3K | $45.00 | −$3.07M | −63.2%39.8K after | 2 lots |
| Aug 2, 2021 (view filing) | Jul 29 | 4 days | Crystal AdamChief Medical Officer | SSale | −15.0K | $45.00 | −$675.0K | −100.0%0 after | |
| Jul 19, 2021 (view filing) | Jul 16 | 3 days | Salter MalcolmDirector | SSale | −755 | $37.37 | −$28.2K | −5.0%14.4K after | |
| Jul 6, 2021 (view filing) | Jul 1 | 5 days | Crystal AdamChief Medical Officer | SSale | −15.0K | $37.98 | −$569.7K | −100.0%0 after | 2 lots |