Kalaris Therapeutics Inc (KLRS) ownership: Top institutional holder: SAMSARA BIOCAPITAL, LLC ($74.71M). Insider activity: Net Seller (0 buys, 5 sells). SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| SAMSARA BIOCAPITAL, LLC | 12948081.00 | $74.71M | 2026-03-31 |
| RTW INVESTMENTS, LP | 1300000.00 | $7.50M | 2026-03-31 |
| Paradigm Biocapital Advisors LP | 700000.00 | $4.04M | 2026-03-31 |
| Alyeska Investment Group, L.P. | 572687.00 | $3.27M | 2026-03-31 |
| Siren, L.L.C. | 435798.00 | $2.51M | 2026-03-31 |
| VANGUARD GROUP INC | 292790.00 | $2.47M | 2025-12-31 |
| Ikarian Capital, LLC | 360000.00 | $2.08M | 2026-03-31 |
| Propel Bio Management, LLC | 295771.00 | $1.72M | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-03-20 | |
| Sell | null | 2026-03-19 | |
| Sell | null | 2026-03-19 | |
| Sell | null | 2026-03-19 | |
| Sell | null | 2026-03-19 |
Back to KLRS overview · KLRS earnings · All congressional trades
Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.