Kalaris Therapeutics, Inc. · NASDAQ:KLRS
Kalaris Therapeutics, Inc. shareholders
As of Jun 30, 2026, 55 institutions reported holding Kalaris Therapeutics, Inc., 75.8% of its shares. Largest: Samsara Biocapital, LLC, Rtw Investments, LP and Alyeska Investment Group, L.P. New holders, exits, insiders and big stakes, each with its filing.
| Holder | Shares | % of Kalaris Therapeutics, Inc. | Change | Filed |
|---|---|---|---|---|
| Samsara Biocapital, LLC | 12.9M | 54.1% | −66,906 | Aug 14, 2026 |
| Rtw Investments, LP | 1.3M | 5.5% | no change | Aug 14, 2026 |
| Alyeska Investment Group, L.P. | 573K | 2.4% | no change | Aug 14, 2026 |
| Vanguard | 466K | 2.0% | +173K | Aug 13, 2026 |
| Siren, L.L.C. | 436K | 1.8% | no change | Aug 13, 2026 |
| Ikarian Capital, LLC | 360K | 1.5% | no change | Aug 14, 2026 |
| UBS | 262K | 1.1% | +256K | Aug 13, 2026 |
| Renaissance Technologies | 149K | 0.63% | +83,200 | Aug 13, 2026 |
| Marshall Wace, LLP | 139K | 0.58% | +71,322 | Aug 13, 2026 |
| Geode Capital | 114K | 0.48% | +26,492 | Aug 12, 2026 |