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Insider filing · ALMS

James B. Tananbaum bought $7.0M of Alumis (ALMS)

Executed Jan 8, disclosed Jan 13, 4 days later.

Value, as filed
$7.0M
411,764 sh across 2 lots
Executed
Jan 8
the trade date, as filed
Disclosed
Jan 13
4 days after the trade
Return, 21 sessionsiFrom the disclosed entry session; derived
+36.0%
+43.5% from execution

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.

The filer
JT James B. Tananbaum Director profile →

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.

The name
ALMS Alumis Inc. ALMS · Healthcare · 24 filings in 24 months ticker →

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
Other filings by James B. Tananbaum in ALMS
ALMSPURCHASE Alumis Inc. $533K
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