| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| Foresite Capital Fund VI LP | 14% | -11% | $158,014,106 | +$9,680,555 | 16,189,804 | +6.5% | James B. Tananbaum | 08 Jan 2026 |
| AyurMaya Capital Management Company, LP | 16% | -29% | $65,554,931 | +$19,457,899 | 15,139,707 | +42% | AyurMaya Capital Management Company, LP | 21 May 2025 |
| Samsara BioCapital, L.P. | 5.4% | +2% | $61,929,972 | +$11,811,946 | 6,345,219 | +24% | Srinivas Akkaraju | 09 Jan 2026 |
| venBio Global Strategic Fund IV, L.P. | 4.8% | $21,297,292 | 4,619,803 | venBio Global Strategic Fund IV, L.P. | 30 Jun 2025 |
As of 31 Dec 2025, 131 institutional investors reported holding 78,898,300 shares of ALUMIS INC. - Common Stock, $0.0001 par value per share (ALMS). This represents 67% of the company’s total 117,504,056 outstanding shares.
The largest institutional shareholders of ALUMIS INC. - Common Stock, $0.0001 par value per share (ALMS) together control 61% 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 |
|---|---|---|---|---|---|
| AyurMaya Capital Management Company, LP | 13% | 15,139,706 | 0% | 100% | $147,763,531 |
| Foresite Capital Management V, LLC | 4.9% | 5,779,348 | 0% | 34% | $56,406,436 |
| SAMSARA BIOCAPITAL, LLC | 4.9% | 5,756,984 | +20% | 5.8% | $56,188,164 |
| venBio Partners LLC | 3.9% | 4,619,803 | 0% | 21% | $45,089,277 |
| BlackRock, Inc. | 3.9% | 4,566,502 | +8.9% | 0% | $44,569,059 |
| Foresite Capital Management VI LLC | 3.6% | 4,247,670 | 0% | 13% | $41,457,259 |
| VANGUARD GROUP INC | 3.5% | 4,103,290 | +1.8% | 0% | $40,048,110 |
| Cormorant Asset Management, LP | 3.1% | 3,635,596 | +69% | 2% | $35,483,417 |
| Saturn V Capital Management LP | 2.7% | 3,135,953 | 5.6% | $30,606,901 | |
| Nextech Invest, Ltd. | 2.5% | 2,915,998 | 0% | 2.8% | $28,460,140 |
| Octagon Capital Advisors LP | 2.2% | 2,530,700 | 3.1% | $24,699,632 | |
| MPM BIOIMPACT LLC | 2% | 2,401,992 | 2.7% | $23,443,442 | |
| SR One Capital Management, LP | 1.7% | 1,959,896 | 0% | 2.7% | $19,128,585 |
| BAKER BROS. ADVISORS LP | 1.3% | 1,562,500 | 0% | 0.09% | $15,250,000 |
| GEODE CAPITAL MANAGEMENT, LLC | 1.3% | 1,487,626 | +6.8% | 0% | $14,522,800 |
| STATE STREET CORP | 1.1% | 1,259,446 | +14% | 0% | $12,292,193 |
| MILLENNIUM MANAGEMENT LLC | 0.98% | 1,151,118 | +263% | 0.01% | $11,234,912 |
| ORBIMED ADVISORS LLC | 0.94% | 1,102,730 | -43% | 0.23% | $10,762,645 |
| Trium Capital LLP | 0.76% | 893,107 | -71% | 6.8% | $8,716,724 |
| Yu Fan | 0.67% | 789,618 | 0% | 8.4% | $7,706,672 |
| Omega Fund Management, LLC | 0.56% | 653,223 | 0% | 2.2% | $6,375,456 |
| Opaleye Management Inc. | 0.46% | 535,000 | -20% | 0.69% | $5,221,600 |
| MORGAN STANLEY | 0.43% | 506,529 | +52% | 0% | $4,943,723 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 0.43% | 504,075 | +2.7% | 0% | $4,919,772 |
| Siren, L.L.C. | 0.43% | 500,000 | 0.15% | $4,880,000 |
| Period | Reported Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2025 Q4 | 78,898,300 | $770,051,253 | +$72,305,373 | $9.76 | 131 |
| 2025 Q3 | 77,994,182 | $311,197,950 | -$66,383 | $3.99 | 129 |
| 2025 Q2 | 78,328,492 | $234,986,451 | +$114,158,793 | $3.00 | 112 |
| 2025 Q1 | 40,203,252 | $246,848,226 | -$2,907,402 | $6.14 | 72 |
| 2024 Q4 | 40,261,542 | $316,456,858 | +$6,196,390 | $7.86 | 64 |
| 2024 Q3 | 35,212,710 | $376,073,647 | +$60,319,979 | $10.68 | 52 |
| 2024 Q2 | 28,575,030 | $380,047,605 | +$380,047,605 | $13.30 | 29 |