Tananbaum James B. Insider Trading Activity
Tananbaum James B. has been net-buying over the last 12 months with 7 purchases and 0 sales across 1 company.
ALMS is the most-traded position with 7 trades. The largest single transaction was a purchase of ALMS for $5.0M on Jan 8, 2026.
Performance Scorecard
Forward stock performance after each transaction by Tananbaum James B.. Buy returns measure price movement after open-market purchases; sell-avoided measures the loss avoided after open-market sales. Success rate counts trades where the insider's direction was right.
| PERIOD | AVG BUY RETURN | AVG SELL AVOIDED | SUCCESS RATE | TRADES |
|---|---|---|---|---|
| 30 days | +69.7% | — | 100% | 7 |
| 90 days | +249.7% | — | 100% | 7 |
| 120 days | +232.8% | — | 100% | 7 |
Performance based on stock price movement after each transaction date. Past results do not predict future returns. Not financial advice.
Price & Trades
Pro: Trade MarkersALMS · ALUMIS INC.
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| DATE | TICKER | TYPE | SHARES | PRICE | VALUE | ROLE |
|---|---|---|---|---|---|---|
| Jan 8, 2026 | ALMS | Buy | 117,647 | $17.00 | $2.0M | Director |
| Jan 8, 2026 | ALMS | Buy | 294,117 | $17.00 | $5.0M | Director |
| Nov 21, 2025 | ALMS | Buy | 72,212 | $7.38 | $533K | Director |
| Nov 19, 2025 | ALMS | Buy | 190,500 | $6.56 | $1.2M | Director |
| Nov 18, 2025 | ALMS | Buy | 117,374 | $6.19 | $727K | Director |
| Nov 17, 2025 | ALMS | Buy | 50,000 | $5.60 | $280K | Director |
| Nov 17, 2025 | ALMS | Buy | 150,000 | $5.59 | $839K | Director |
Top Companies Traded
| TICKER | COMPANY | TRADES | TOTAL VOLUME |
|---|---|---|---|
| ALMS | ALUMIS INC. | 7 | $10.6M |
Other insiders at ALUMIS INC.
3 other tracked filers at ALMS.