C4 Therapeutics
CCCC · NASDAQ
$3.16+$0.27 (+9.34%)TodayMarket closed ·
Prev close $2.89
Who owns CCCC
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 58.5% of CCCC’s shares.
- Sirenia Capital Management LP8.4%
- Morgan Stanley & Co. LLC8.0%
- RA Capital Management, LP7.2%
- Lynx1 Capital Advisors LLC6.6%
- Next 6 largest institutions28.2%
- All other shareholders41.5%
| Holder | Shares | % of shares |
|---|---|---|
| Sirenia Capital Management LP | 9.34M | 8.44% |
| Morgan Stanley & Co. LLC | 8.85M | 8.01% |
| RA Capital Management, LP | 8.00M | 7.24% |
| Lynx1 Capital Advisors LLC | 7.33M | 6.63% |
| Squadron Capital Management LLC | 7.20M | 6.51% |
| BlackRock Institutional Trust Company, N.A. | 7.18M | 6.50% |
| J.P. Morgan Securities LLC | 4.70M | 4.25% |
| Vanguard Capital Management, LLC | 4.42M | 4.00% |
| Citadel Advisors LLC | 4.19M | 3.79% |
| Wasatch Global Investors Inc | 3.52M | 3.19% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| Vanguard Total Stock Market Index Fund | 3.26M | 2.95% |
| Candriam Equities L Oncology | 2.76M | 2.50% |
| iShares Russell 2000 ETF | 2.58M | 2.34% |
| Wasatch Ultra Growth Fund | 2.50M | 2.26% |
| Biotech Growth Trust PLC | 1.10M | 1.00% |
Insider trades
Form 4 filings by officers, directors and large holders
Insiders made no open-market buys or sales of CCCC in the last 6 months.
| Insider | Type | Shares | Value |
|---|---|---|---|
| Anderson Kenneth Carl | Award | 3.66K | $11.50K |
| GROGAN DONNA ROY | Award | 4.62K | $14.50K |
| Adams Kendra | Tax withholding | 2.77K | $9.41K |
| Adams Kendra | Option exercise | 6.25K | — |
| REYNO LEONARD | Tax withholding | 7.40K | $30.03K |
| REYNO LEONARD | Option exercise | 15.32K | — |
| GROGAN DONNA ROY | Award | 3.34K | $14.50K |
| Anderson Kenneth Carl | Award | 2.65K | $11.50K |
| Koppikar Utpal | Award | 62.00K | — |
| Anderson Kenneth Carl | Award | 62.00K | — |
Short interest
Settled Sep 30, 2026
- Shares short
- 40.40M
- Days to cover
- 17.65
- % of shares outstanding
- 36.53%
- Average daily volume
- 2.29M
- Change since last report
- +0.5%
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