CCCC · Insider trading · 13F holders · Congress trades
C4 Therapeutics, Inc. (CCCC)
Who is buying and selling CCCC: company insiders on SEC Form 4, hedge funds and superinvestors on Form 13F, and members of Congress under the STOCK Act. Every figure links to the filing or page it comes from.
- 13F filers holding
- 15
- Insider buys, 90 days
- $0
- Insider sales, 90 days
- $0
- Congress trades, 12 months
- 0
CCCC at a glance
- No open-market insider purchases or sales of CCCC were filed in the last 90 days.
- 15 13F filers hold CCCC among their 50 largest positions, worth $199.0M combined, including Peter Kolchinsky. The biggest bets by portfolio weight are Squadron Capital Management LLC (11.5%), Lynx1 Capital Management LP (4.0%) and Bain Capital Life Sciences Investors, LLC (2.0%). In their latest 13Fs, 3 managers opened a new position and 3 added to one.
- No member of Congress has disclosed a trade in CCCC.
CCCC insider trading
No open-market insider purchases or sales of CCCC were filed in the last 90 days.
Who owns CCCC? Hedge funds and superinvestors
15 13F filers hold CCCC among their 50 largest positions, worth $199.0M combined, including Peter Kolchinsky. The biggest bets by portfolio weight are Squadron Capital Management LLC (11.5%), Lynx1 Capital Management LP (4.0%) and Bain Capital Life Sciences Investors, LLC (2.0%). In their latest 13Fs, 3 managers opened a new position and 3 added to one.
Superinvestors holding CCCC: Peter Kolchinsky 0.3%
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Peter KolchinskyHedge fund | 0.3% | $37.4M | 8,000,000 | — | Q2 2026 |
| Lynx1 Capital Management LPHedge fund | 4.0% | $34.2M | 7,326,691 | +4.7% shares | Q2 2026 |
| Squadron Capital Management LLCHedge fund | 11.5% | $33.6M | 7,200,000 | +220.0% shares | Q2 2026 |
| Bain Capital Life Sciences Investors, LLCAsset manager | 2.0% | $33.5M | 7,171,910 | +0.0% shares | Q2 2026 |
| Soleus Capital Management, L.P.Hedge fund | 0.5% | $15.8M | 3,377,981 | -11.2% shares | Q2 2026 |
| Silverarc Capital Management, LLCHedge fund | 1.6% | $14.2M | 3,032,060 | +58.6% shares | Q2 2026 |
| Ikarian Capital, LLCHedge fund | 1.9% | $11.4M | 2,433,000 | — | Q2 2026 |
| Patient Square Capital LPHedge fund | 1.2% | $7.5M | 1,608,815 | New | Q2 2026 |
| HighVista Strategies LLCHedge fund | 1.4% | $6.3M | 1,348,136 | — | Q2 2026 |
| Velan Capital Investment Management LPHedge fund | 1.6% | $2.7M | 570,000 | New | Q2 2026 |
| Seven Fleet Capital Management LPHedge fund | 0.3% | $1.8M | 381,169 | — | Q2 2026 |
| Vienna Powszechne Towarzystwo Emerytalne S.A. Vienna Insurance GroupInsurance company | 0.1% | $397K | 85,000 | +0.0% shares | Q2 2026 |
| Intrepid Family Office LLCFamily office | 0.3% | $304K | 65,000 | +8.3% shares | Q2 2026 |
| Bronte Capital Management Pty Ltd.Hedge fund | 0.0% | $48K | 10,349 | +3.1% shares | Q2 2026 |
| CDC Financial, Inc.Investment manager | 0.0% | $5K | 1,000 | New | Q2 2026 |
Each manager counts with its latest 13F (Q2 2026: 15). Screen CCCC in the grand portfolio →
CCCC stock trades by members of Congress
No member of Congress has disclosed a trade in CCCC.
CCCC questions and answers
Are insiders buying CCCC stock?
No open-market insider purchases or sales of CCCC were filed in the last 90 days.
Which hedge funds own CCCC?
15 13F filers hold CCCC among their 50 largest positions, worth $199.0M combined, including Peter Kolchinsky. The biggest bets by portfolio weight are Squadron Capital Management LLC (11.5%), Lynx1 Capital Management LP (4.0%) and Bain Capital Life Sciences Investors, LLC (2.0%). In their latest 13Fs, 3 managers opened a new position and 3 added to one.
Has Congress traded CCCC?
No member of Congress has disclosed a trade in CCCC.
Who is the largest holder of CCCC?
Among 13F filers, Peter Kolchinsky reports the largest CCCC position, $37.4M (8,000,000 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is Squadron Capital Management LLC's: 11.5% of its portfolio.
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