Foresite Labs, LLC 4

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.