Form 4: Alumis Inc. Director James B. Tananbaum Reports Beneficial Ownership Changes

James B. Tananbaum, a director and 10% owner of Alumis Inc., reported the acquisition of common stock through indirect holdings.

Summary

• On May 2, 2025, James B. Tananbaum indirectly acquired 25,000 shares of Alumis Inc. common stock at a price of $4.62 per share.
• On May 6, 2025, Tananbaum indirectly acquired an additional 20,000 shares at $4.34 per share.
• These acquisitions increased Tananbaum's indirect beneficial ownership to 4,247,670 shares held through Foresite Capital Fund VI, L.P.
• Tananbaum also has indirect beneficial ownership through other entities including Foresite Capital Fund V, L.P., Labs Co-Invest V, LLC, Foresite Capital Opportunity Fund V, L.P., Foresite Labs Fund I, L.P., and Foresite Labs Affiliates 2021, LLC, totaling 11,952,295 shares.
• Tananbaum disclaims beneficial ownership of these shares except to the extent of his pecuniary interest.

Sentiment

Score: 6

Explanation: The sentiment is neutral. The filing simply reports stock purchases by a director, which could be interpreted as a positive signal, but it's a routine disclosure.

Positives

• The purchases indicate confidence by a director and significant shareholder in Alumis Inc.

Industry Context

Form 4 filings are standard disclosures required by the SEC to provide transparency regarding the transactions of company insiders. These filings are closely watched by investors to gauge sentiment and potential future performance.

Stakeholder Impact

• The stock purchases by a director could positively influence shareholder sentiment.

Key Dates

Keywords

beneficial ownership, Form 4, ALMS, Alumis Inc., Tananbaum, Foresite Capital, stock acquisition, director