Kalaris Therapeutics, Inc. Common Stock (KLRS) Ownership & Trading Activity
Institutional holders, insider transactions, and congressional trades for KLRS. 13F holdings as of 2026-06-30.
In 13F filings for the quarter ended June 30, 2026, 55 institutions reported holding KLRS, with 18.0 million shares worth $73.4 million in aggregate.
Top Institutional Holders
| Institution | Shares | Value | Change |
|---|---|---|---|
| Samsara Biocapital | 12,881,175 | $52M | DECREASED |
| Rtw Investments | 1,300,000 | $5M | UNCHANGED |
| Alyeska Investment Group | 572,687 | $2M | UNCHANGED |
| Vanguard | 465,616 | $2M | INCREASED |
| Siren | 435,798 | $2M | UNCHANGED |
Full institutional holdings, insider history, and congressional trades for Kalaris Therapeutics, Inc. Common Stock on SentiSense.