| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| Samsara BioCapital, L.P. | 56% | -7.7% | $65,674,656 | +$7,632,885 | 12,953,581 | +13% | Srinivas Akkaraju | 22 Dec 2025 |
| GILEAD SCIENCES, INC. | 3.9% | $5,807,882 | 723,273 | GILEAD SCIENCES, INC. | 18 Mar 2025 | |||
| Invus Global Management, LLC | 1.5% | $955,141 | 282,586 | Invus Public Equities, L.P. | 30 Jun 2025 | |||
| EcoR1 Capital, LLC | 1.1% | $1,619,796 | 201,718 | EcoR1 Capital, LLC | 31 Mar 2025 |
As of 30 Sep 2025, 31 institutional investors reported holding 13,222,873 shares of Kalaris Therapeutics, Inc. - Common Stock, $0.0001 par value per share (KLRS). This represents 58% of the company’s total 22,926,692 outstanding shares.
The largest institutional shareholders of Kalaris Therapeutics, Inc. - Common Stock, $0.0001 par value per share (KLRS) together control 58% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| SAMSARA BIOCAPITAL, LLC | 50% | 11,448,081 | 0% | 8.6% | $66,169,908 |
| TANG CAPITAL MANAGEMENT LLC | 1.8% | 418,241 | +16% | 0.09% | $2,417,433 |
| Siren, L.L.C. | 1.4% | 318,264 | +13% | 0.07% | $1,839,566 |
| Woodline Partners LP | 1.1% | 241,102 | 0.01% | $1,393,570 | |
| VANGUARD GROUP INC | 0.89% | 203,051 | +56% | 0% | $1,173,635 |
| RENAISSANCE TECHNOLOGIES LLC | 0.49% | 112,751 | +17% | 0% | $651,701 |
| Redmile Group, LLC | 0.36% | 82,955 | 0% | 0.05% | $479,480 |
| GEODE CAPITAL MANAGEMENT, LLC | 0.28% | 64,551 | +153% | 0% | $373,147 |
| BlackRock, Inc. | 0.18% | 40,379 | +5.8% | 0% | $233,391 |
| Squarepoint Ops LLC | 0.18% | 40,173 | -32% | 0% | $232,200 |
| Belpointe Asset Management LLC | 0.17% | 40,000 | 0.01% | $231,200 | |
| Fortis Capital Advisors, LLC | 0.17% | 40,000 | 0.04% | $231,200 | |
| MILLENNIUM MANAGEMENT LLC | 0.11% | 24,923 | -54% | 0% | $144,055 |
| MORGAN STANLEY | 0.11% | 24,918 | +1169% | 0% | $144,026 |
| STATE STREET CORP | 0.1% | 22,610 | +111% | 0% | $130,686 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 0.1% | 22,500 | 0% | $130,050 | |
| GOLDMAN SACHS GROUP INC | 0.1% | 22,465 | 0% | $129,848 | |
| RBF Capital, LLC | 0.08% | 17,391 | 0% | 0% | $100,520 |
| MARSHALL WACE, LLP | 0.06% | 14,115 | 0% | 0% | $81,585 |
| Johnson Financial Group, Inc. | 0.04% | 10,000 | 0% | $57,800 | |
| FMR LLC | 0.03% | 7,806 | 0% | 0% | $45,119 |
| UBS Group AG | 0.02% | 5,252 | +28% | 0% | $30,357 |
| FEDERATED HERMES, INC. | 0% | 578 | -8.8% | 0% | $3,341 |
| Strengthening Families & Communities, LLC | 0% | 268 | 0% | $1,549 | |
| BANK OF AMERICA CORP /DE/ | 0% | 217 | -21% | 0% | $1,254 |