Siren, L.L.C.
- SEC CIK
- 0002005245
- Latest filing
- Aug 13, 2026
COGT holding history
Cogent Biosciences, Inc. in every 13F filed by Siren, L.L.C., including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.
COGT overviewAll 13F holders of COGTFull Q2 2026 holdings
- Shares (Q2 2026)
- 1,859,279
- Value
- $72.0M
- % of portfolio
- 1.5%
- Quarters held
- 5
- Since Q2 2025
| Quarter | Shares | Value | % of portfolio | Share change | Action | All holders |
|---|---|---|---|---|---|---|
| Q2 2026 | 1,859,279 | $72.0M | 1.5% | +150,000+8.8% | Added | Holders |
| Q1 2026 | 1,709,279 | $65.8M | 1.8% | +80,000+4.9% | Added | Holders |
| Q4 2025 | 1,629,279 | $57.9M | 1.7% | −95,000−5.5% | Reduced | Holders |
| Q3 2025 | 1,724,279 | $24.8M | 1.0% | +869,900+101.8% | Added | Holders |
| Q2 2025 | 854,379 | $6.13M | 0.3% | +854,379 | New | Holders |