[Form 4] ALUMIS INC. Insider Trading Activity
Filing Impact
Filing Sentiment
Form Type
4
Rhea-AI Filing Summary
Alumis Inc. (ALMS) reported an insider purchase by a director-affiliated entity. On 11/21/2025, a reporting person bought 72,212 shares of common stock at $7.38 per share, recorded as an indirect holding.
After this transaction, the reporting person reports indirect beneficial ownership of multiple large Alumis positions through affiliated Foresite investment vehicles. These include 2,614,215 shares held by Foresite Capital Opportunity Fund V, L.P., 4,247,670 shares held by Foresite Capital Fund VI, L.P., 5,584,889 shares held by Foresite Capital Fund V, L.P., and additional blocks of 194,459, 1,960,337, and 1,176,470 shares held by other Foresite-related entities.
The filing notes that the various Foresite funds and management entities, including James B. Tananbaum, may be deemed to share voting and dispositive power over these shares but each disclaims being part of a "group" and disclaims beneficial ownership beyond their pecuniary interests.
Positive
- None.
Negative
- None.
Insider Trade Summary
Net Buyer: 72,212 shares ($532,925)
Net Buy
6 txns
Insider
Foresite Labs, LLC, Foresite Labs Affiliates 2021, LLC
Role
10% Owner | 10% Owner
Bought
72,212 shs ($533K)
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Purchase | Common Stock | 72,212 | $7.38 | $533K |
| holding | Common Stock | -- | -- | -- |
| holding | Common Stock | -- | -- | -- |
| holding | Common Stock | -- | -- | -- |
| holding | Common Stock | -- | -- | -- |
| holding | Common Stock | -- | -- | -- |
Holdings After Transaction:
Common Stock — 2,614,215 shares (Indirect, See Footnote)
Footnotes (1)
- The shares are held of record by Foresite Capital Opportunity Fund V, L.P. ("Opportunity Fund V"). Foresite Capital Opportunity Management V, LLC ("FCOM V") is the general partner of Opportunity Fund V and may be deemed to have sole voting and dispositive power over such shares. James B. Tananbaum ("Tananbaum"), the managing member of FCOM V, may be deemed to have sole voting and dispositive power over such shares. Each of the Reporting Persons disclaims the existence of a "group", as defined in Rule 13d-5 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), and, other than Opportunity Fund V, disclaims beneficial ownership of the shares held by Opportunity Fund V, except to the extent of such person's pecuniary interest in such securities. The shares are held of record by Foresite Capital Fund VI, L.P. ("Fund VI"). Foresite Capital Management VI, LLC ("FCM VI") is the general partner of Fund VI and may be deemed to have sole voting and dispositive power over such shares. Tananbaum, the managing member of FCM VI, may be deemed to have sole voting and dispositive power over such shares. Each of the Reporting Persons disclaims the existence of a "group", as defined in Rule 13d-5 of the Exchange Act, and, other than Fund VI, disclaims beneficial ownership of the shares held by Fund VI, except to the extent of such person's pecuniary interest in such securities. The shares are held of record by Foresite Capital Fund V, L.P. ("Fund V"). Foresite Capital Management V, LLC ("FCM V") is the general partner of Fund V and may be deemed to have sole voting and dispositive power over such shares. Tananbaum, the managing member of FCM V, may be deemed to have sole voting and dispositive power over such shares. Each of the Reporting Persons disclaims the existence of a "group", as defined in Rule 13d-5 of the Exchange Act, and, other than Fund V, disclaims beneficial ownership of the shares held by Fund V, except to the extent of such person's pecuniary interest in such securities. The shares are held of record by Labs Co-Invest V, LLC ("Labs Co-Invest"). FCM V is the managing member of Labs Co-Invest and may be deemed to have sole voting and dispositive power over such shares. Tananbaum, the managing member of FCM V, may be deemed to have sole voting and dispositive power over such shares. Each of the Reporting Persons disclaims the existence of a "group", as defined in Rule 13d-5 of the Exchange Act, and, other than Labs Co-Invest, disclaims beneficial ownership of the shares held by Labs Co-Invest, except to the extent of such person's pecuniary interest in such securities. The shares are held of record by Foresite Labs Fund I, L.P. ("Labs Fund I"). Foresite Labs Management I, LLC ("FLM I") is the general partner of Labs Fund I and may be deemed to have sole voting and dispositive power over such shares. Tananbaum, the managing member of FLM I, may be deemed to have sole voting and dispositive power over such shares. Each of the Reporting Persons disclaims the existence of a "group", as defined in Rule 13d-5 of the Exchange Act, and, other than Labs Fund I, disclaims beneficial ownership of the shares held by Labs Fund I, except to the extent of such person's pecuniary interest in such securities. The shares are held of record by Foresite Labs Affiliates 2021, LLC ("Labs Affiliates"). Foresite Labs, LLC ("Labs") is the managing member of Labs Affiliates and may be deemed to have sole voting and dispositive power over such shares. Tananbaum, a manager of Labs, may be deemed to share voting and dispositive power over such shares. Each of the Reporting Persons disclaims the existence of a "group", as defined in Rule 13d-5 of the Exchange Act, and, other than Lab Affiliates, disclaims beneficial ownership of the shares held by Labs Affiliates, except to the extent of such person's pecuniary interest in such securities.
