Updated: May 19, 2026

James B. Tananbaum

ALMSALUMIS INC.SEC CIK: 0001581754
Estimated Net Worth
$281 Million
Last Updated: May 19, 2026 11:40 PM EST

Transaction Summary

Total Transactions75
Buy-Sell Ratio3.08
Buy Transactions40
Sell Transactions13

Transaction Volume

Total Volume$363.68M
Net Volume-$8.95M
Buy Volume$177.36M
Sell Volume$186.32M

Trade Analysis

AVG Trade Size$4.85M
Largest Trade$116.19M
Most Active MonthAug
Most Active Year2020

Trading Sentiment

OverallBearish
Recent TradeSelling
Last 90 Days0 Trades
ConvictionNone

Net Worth & Trading Activity Over Time

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Monthly Trading Pattern

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Past Insider Trading and Trends

James B. Tananbaum has an estimated net worth of $281 Million. This is based on reported shares across multiple companies, which include 10x Genomics, Inc., AMBIT BIOSCIENCES CORP, PARDES BIOSCIENCES, INC., Intellia Therapeutics, Inc., Aclaris Therapeutics, Inc., Quantum-Si Inc, AERIE PHARMACEUTICALS INC, Kinnate Biopharma Inc., Gemini Therapeutics, Inc. /DE, Aimmune Therapeutics, Inc., Theseus Pharmaceuticals, Inc., and ALUMIS INC..



2019 was James B. Tananbaum's most active year for acquiring shares with 25 total transactions. James B. Tananbaum's most active month to acquire stocks was the month of July. 2020 was James B. Tananbaum's most active year for disposing of shares, totalling 32 transactions. James B. Tananbaum's most active month to dispose stocks was the month of March. 2024 saw James B. Tananbaum paying a total of $40,000,000.00 for 13,976,484 shares, this is the most they've acquired in one year. In 2020 James B. Tananbaum cashed out on 27,280,883 shares for a total of $177,508,500.00, their largest year based on trade value.

Holdings & Transactions

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