Foresite Labs, LLC 4
4 · ALUMIS INC. · Filed Apr 3, 2026
Research Summary
AI-generated summary of this filing
ALUMIS (ALMS) — Foresite Labs (10% Owner) Transfers Shares In‑Kind
What Happened
- Foresite Labs, LLC — a reported 10% owner of Alumis, Inc. (ALMS) — reported multiple "other" transactions (code J) on April 1, 2026 that moved shares among affiliated entities. The filings show two dispositions and two acquisitions at $0.00 per share (in‑kind transfers), not open‑market trades or purchases.
- Reported line items: disposed 1,176,470 shares and 1,123,337 shares; acquired 1,123,337 shares and 680,486 shares. All transactions carried a price of $0 and $0 in proceeds; the net effect shown in these entries is a net disposition of 495,984 shares (2,299,807 disposed vs. 1,803,823 acquired). Footnotes describe these as pro rata, in‑kind distributions and reallocations among Labs Affiliates and related funds.
Key Details
- Transaction date: 2026-04-01; Filing date: 2026-04-03 (Form 4 accession 0001104659-26-039611).
- Transaction type/code: Other acquisition/disposition (J) — recorded as $0.00 per share, $0 total.
- Reported movements: Disposed 1,176,470 and 1,123,337 shares; Acquired 1,123,337 and 680,486 shares.
- Shares owned after transaction: Not specified in the provided excerpt.
- Notable footnotes: Transactions described as pro rata, in‑kind distributions under Rules 16a‑13/16a‑9 (not purchases or sales). Several footnotes identify record holders (e.g., Foresite Capital Fund VI, Labs Co‑Invest V, Foresite Labs Fund I) and state that various management entities may have voting/dispositive power; reporting persons disclaim a "group" and certain beneficial ownership except to the extent of pecuniary interest.
- Filing timeliness: No late‑filing flag provided in the excerpt.
Context
- These entries reflect internal reallocations and pro rata distributions among affiliated funds/entities rather than market buys or sales. Because they are in‑kind transfers at $0, they do not generate cash proceeds and do not necessarily indicate a change in overall economic exposure by the Foresite organization.
- As a 10% institutional owner (not an individual executive), these moves are typical fund/account structuring activity. Retail investors should treat them differently than open‑market insider purchases or sales when assessing insider sentiment.
Insider Transaction Report
Form 4
ALUMIS INC.ALMS
Foresite Labs, LLC
10% Owner
Transactions
- Other
Common Stock
[F1][F2]2026-04-01−1,176,470→ 0 total(indirect: See Footnote) - Other
Common Stock
[F3][F4]2026-04-01+1,123,337→ 1,123,337 total(indirect: See Footnote) - Other
Common Stock
[F5][F4]2026-04-01−1,123,337→ 0 total(indirect: See Footnote) - Other
Common Stock
[F6][F7]2026-04-01+680,486→ 680,486 total(indirect: See Footnote)
Holdings
- 5,702,536(indirect: See Footnote)
Common Stock
[F8] - 2,908,332(indirect: See Footnote)
Common Stock
[F9] - 4,247,670(indirect: See Footnote)
Common Stock
[F10] - 194,459(indirect: See Footnote)
Common Stock
[F11] - 1,960,337(indirect: See Footnote)
Common Stock
[F12]
Footnotes (12)
- [F1]Represents a pro rata, in-kind distribution, and not a purchase or sale, without additional consideration by Foresite Labs Affiliates 2021, LLC ("Labs Affiliates") to its members in accordance with the exemptions afforded by Rules 16a-13 and/or 16a-9 of the Securities Exchange Act of 1934, as amended (the "Exchange Act").
- [F10]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 disclaims beneficial ownership of the shares held by Fund VI, except to the extent of such person's pecuniary interest in such securities.
- [F11]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 disclaims beneficial ownership of the shares held by Labs Co-Invest, except to the extent of such person's pecuniary interest in such securities.
- [F12]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 disclaims beneficial ownership of the shares held by Labs Fund I, except to the extent of such person's pecuniary interest in such securities.
- [F2]The shares are held of record by 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. James B. Tananbaum ("Tananbaum"), a manager of Labs, may be deemed to share voting and dispositive power over such shares.
- [F3]Represents shares received by Labs pursuant to pro rata distributions by Labs Affiliates, for no consideration, to its members in accordance with the exemptions afforded by Rules 16a-13 and/or 16a-9 of the Exchange Act.
- [F4]The shares are held of record by Labs. Tananbaum, a manager of Labs, may be deemed to share voting and dispositive power over such shares.
- [F5]Represents a pro rata, in-kind distribution, and not a purchase or sale, without additional consideration by Labs to its members in accordance with the exemptions afforded by Rules 16a-13 and/or 16a-9 of the Exchange Act.
- [F6]Represents shares received by TFL Investment Holdings, LLC ("TFL"). pursuant to pro rata distributions by Labs, for no consideration, to its members in accordance with the exemptions afforded by Rules 16a-13 and/or 16a-9 of the Exchange Act.
- [F7]The shares are held of record by TFL. Tananbaum is the manager of TFL, and James B. Tananbaum and Dana Shonfeld Tananbaum Family Trust, of which Tananbaum is a trustee, is the sole member of TFL. Each of the Reporting Persons disclaims the existence of a "group", as defined in Rule 13d-5 of the Exchange Act, and disclaims beneficial ownership of these securities, and this report shall not be deemed an admission that any such person is the beneficial owner of such securities, except to the extent of such person's pecuniary interest therein, if any.
- [F8]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 disclaims beneficial ownership of the shares held by Fund V, except to the extent of such person's pecuniary interest in such securities.
- [F9]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. 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 Exchange Act, and disclaims beneficial ownership of the shares held by Opportunity Fund V, except to the extent of such person's pecuniary interest in such securities.