Tananbaum James B.: insider buys
Every open-market stock purchase reported by Tananbaum James B. to the SEC on Form 4.
Total bought$13.15M
Purchases4
Companies2
Last purchase filedAug 10, 2026
Return on these buys-34%
Tananbaum James B. has made 4 open-market purchases worth $13.15M in 2 companies since Nov 19, 2025, according to SEC Form 4 filings. The most recent was filed on Aug 10, 2026: 140,000 shares of LTGO at $18.00 (Director, 10% Owner), worth $2.52M. The largest was $7M of ALMS on Jan 8, 2026. Taken together, these purchases are down 34% at the latest closing prices (split-adjusted, weighted by amount).
Companies Tananbaum James B. bought
| Ticker | Company | Role | Buys | Total | Since buy | Last filed |
|---|---|---|---|---|---|---|
| ALMS | Alumis Inc. | Director, 10% Owner | 3 | $10.63M | -37% | Jan 12 |
| LTGO | Latigo Biotherapeutics, Inc. | Director, 10% Owner | 1 | $2.52M | -23% | Aug 10 |
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| Filed | Stock | Insider | Value | Shares | Price | Since buy | Stake | Trade | |
|---|---|---|---|---|---|---|---|---|---|
| Aug 10 | LTGOLatigo Biotherapeutics, Inc. | Tananbaum James B.Director, 10% Owner | $2.52M | 140,000 | $18.00 | -23% | +8% | Aug 10 | SEC |
| Jan 12 | ALMSAlumis Inc. | Tananbaum James B.Director, 10% Owner | $7M | 411,764 | $17.00 | -60% | +8% | Jan 8 | SEC |
| Nov 25 | ALMSAlumis Inc. | Tananbaum James B.Director, 10% Owner | $532.92K | 72,212 | $7.38 | -8.8% | +3% | Nov 21 | SEC |
| Nov 19 | ALMSAlumis Inc. | Tananbaum James B.Director, 10% Owner | $3.09M | 507,874 | $6.09 | +10% | +32% | Nov 17 | SEC |