Foresite Capital Fund V, L.P. 4

What Happened
Foresite Capital Management VI LLC (a reported 10% owner) disclosed a series of pro rata, in‑kind transfers of ALUMIS, INC. (ALMS) common stock on April 1, 2026. The filing shows total dispositions of 2,299,807 shares (1,176,470 and 1,123,337) and total acquisitions of 1,803,823 shares (1,123,337 and 680,486). All transfers were recorded at $0.00 per share (no cash exchanged), resulting in a net decrease of 495,984 shares held by the reporting entity. The transactions are coded as “Other acquisition or disposition (J)” and described in footnotes as pro rata in‑kind distributions under Rules 16a‑13 and/or 16a‑9.

Key Details

• Transaction date: 2026-04-01; Form 4 filed: 2026-04-03 (appears timely).
• Individual transactions reported:
  • Disposed 1,176,470 shares @ $0.00 (J)
  • Acquired 1,123,337 shares @ $0.00 (J)
  • Disposed 1,123,337 shares @ $0.00 (J)
  • Acquired 680,486 shares @ $0.00 (J)
• Net change: −495,984 shares. Total consideration shown: $0.
• Shares owned after transaction: not specified in the provided summary of this filing.
• Footnotes: transactions described as pro rata, in‑kind distributions (not purchases/sales) under Rules 16a‑13/16a‑9; some shares are held of record by related funds (e.g., Fund VI, Labs entities) where Foresite entities or managers may have voting/dispositive power.
• This Form 4 is one of three filed the same date covering related reporting persons (Tananbaum, Labs Affiliates, and Labs).

Context

• “J” other acquisition/disposition entries and $0 consideration indicate internal reallocations or in‑kind distributions among affiliated funds/members, not open‑market buying or selling. Such transfers are common for fund structuring and do not necessarily reflect a manager’s view of the company’s prospects.
• As a 10% institutional owner, this activity is best read as an institutional reallocation/administrative transfer rather than executive insider trading.