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Tananbaum James B.

InsiderCIK 0001581754

Largest Purchase

$7.0M

ALUMIS INC. (ALMS)

Jan 12

Profile

Filings
5
Buy transactions
7
Sell transactions
0
Companies
2
Active
2025–2026

Across 5 filings between 2025–2026, Tananbaum James B. has disclosed $12.6M in transactions — spread across 2 companies. Their disclosed trades are heavily weighted toward buying$12.6M in buys and $0 in sells. The largest single open-market purchase on record is $7.0M in ALUMIS INC.. Data is sourced from official SEC Form 3, 4, and 5 filings.

Trading History

5 loaded
Aug 10LTGO
Latigo Biotherapeutics, Inc.
Tananbaum James B.InsiderBuy$2.5M
Aug 6LTGO
Latigo Biotherapeutics, Inc.
Tananbaum James B.InsiderOther$0
Apr 3ALMS
ALUMIS INC.
Tananbaum James B.Director, 10% OwnerOther$0
Jan 12ALMS
ALUMIS INC.
Tananbaum James B.Director, 10% OwnerBuy$7.0M
Nov 19ALMS
ALUMIS INC.
Tananbaum James B.Director, 10% OwnerBuy$3.1M

5 filings