JT
Insider
James B. Tananbaum
DirectorJames 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.
Add to watchlistReturn, ttmiAverage return per filing, trailing twelve months
+61.1%
avg across 4 priced filings
Delay-adjustediThe same average, entered at disclosure dates
+48.9%
same 4 filings, from disclosure
Filings, ttm
4
4 buys · 0 sells
Median delay
3d
execution → disclosure
Volume, ttmiDollar value disclosed in the trailing twelve months
$13.1M
shares × price, as filed
Last traded
Aug 10
Filed Aug 10
Median ADV $31.6M across their filed names
Impact on $10,000 · 12M
$31,761 (+217.6%)
S&P 500 $11,725 (+17.2%) · 200.4 pts ahead
James B. Tananbaum
S&P 500
Compounded across filings from disclosure dates · past 12 months
Open performance→Volume by month
Buys $13.3M
Sells $0
Shares × price, as filed · by filing month · past 24 months
Sectors filed on
Healthcare
4 filings
Sector per market data · by filing · past 12 months
Most traded names
ALMSRecent filings
LTGOPURCHASE
Latigo Biotherapeutics, Inc.
View filing →
$2.5M140,000 sh × $18.00
Exec Aug 10
Filed Aug 10 · 8:00 PM ET ALMSPURCHASE Alumis Inc. View filing → $7.0M
411,764 sh across 2 lots
Exec Jan 8
Filed Jan 12 · 9:58 PM ET ALMSPURCHASE Alumis Inc. View filing → $533K
72,212 sh × $7.38
Exec Nov 21 2025
Filed Nov 25 2025 · 4:02 PM ET ALMSPURCHASE Alumis Inc. View filing → $3.1M
507,874 sh across 4 lots
Exec Nov 17 2025
Filed Nov 19 2025 · 8:51 PM ET ALMSPURCHASE Alumis Inc. View filing → $116K
25,000 sh × $4.62
Exec May 2 2025
Filed May 6 2025 · 5:30 PM ET