James B. Tananbaum bought $7.0M of Alumis (ALMS)
Executed Jan 8, disclosed Jan 13, 4 days later.
Over the 21 trading sessions from the disclosed entry session (Jan 12), the stock returned +36.0% (delay-adjusted); from the execution session (Jan 8), +43.5%. Derived: entry at the session's open, exit at the close 20 sessions later.
James B. Tananbaum (Director) filed 4 Form 4 reports in the trailing twelve months (4 purchases, 0 sales), most often in Alumis Inc. (ALMS). Across 4 priced purchase filings, the average 21-session return was +61.1% from execution and +48.9% from disclosure (delay-adjusted; derived). The largest single filing was $7.0M of ALMS (411,764 sh across 2 lots, as filed), executed Jan 8.
Healthcare · Alumis Inc., a clinical stage biopharmaceutical company, focuses on the development and commercialization of medicines for autoimmune disor…
More Healthcare filings→ Insider filings, newest first→ View the original filing at www.sec.gov→72,212 sh × $7.38
Exec Nov 21 2025
Filed Nov 25 2025 · 4:02 PM ET ALMSPURCHASE Alumis Inc. $3.1M
507,874 sh across 4 lots
Exec Nov 17 2025
Filed Nov 19 2025 · 8:51 PM ET ALMSPURCHASE Alumis Inc. $116K
25,000 sh × $4.62
Exec May 2 2025
Filed May 6 2025 · 5:30 PM ET