James B. Tananbaum bought $533k of ALMS
director, owner at ALUMIS INC.. 72,212 shares at an average of $7.38, traded Nov 21, 2025, filed Nov 25, 2025.
Score components
- +15RoleDirector
- +18Trade size$533k at market
- 0Relative to holdingsHoldings up 2.8%
- +4Price context28% below the 52-week high
- +15Cluster4 insiders buying within 14 days
- +5Repeat buying2 buys in 90 days
- 0Track recordToo few past buys to judge (0 with prices)
What happened after comparable buys
Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.
Price around the trade, and since
From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™
Rows in this filing
Every transaction in Form 4 0001104659-25-115950, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Nov 21, 2025 | POpen-market purchase Common Stockindirect: See Footnote | +72,212 | $7.38 | $533k | 2,614,215 | Nov 25, 2025 |
Related signals
Other insiders at ALUMIS INC. and this insider’s other filings.
| Score | Company | Insider | Value | Holdings | Filed |
|---|---|---|---|---|---|
| 46Moderate | ALMSbuy ALUMIS INC. | Srinivas Akkaraju director | $11M 986,721 shares | +22% | |
| 40Moderate | ALMSsell ALUMIS INC. | Srinivas Akkaraju director | $1.0M 96,131 shares | -2% | |
| 63Notable | ALUMIS INC. | Srinivas Akkaraju director | $1.8M 186,377 shares | +17% | |
| 70Notable | ALUMIS INC. | Srinivas Akkaraju director | $2.0M 262,027 shares | +32% | |
| 70Notable | ALUMIS INC. | Srinivas Akkaraju director | $1.3M 173,589 shares | +27% | |
| 49Moderate | ALUMIS INC. | Foresite Labs, LLC owner | $533k 72,212 shares | +3% | |
| 49Moderate | ALUMIS INC. | Foresite Capital Management VI LLC owner | $533k 72,212 shares | +3% | |
| 73Notable | ALUMIS INC. | Srinivas Akkaraju director | $905k 125,743 shares | +24% | |
| 78Notable | ALUMIS INC. | Srinivas Akkaraju director | $1.5M 241,338 shares | +87% | |
| 69Notable | ALUMIS INC. | James B. Tananbaum director, owner | $3.1M 507,874 shares | +25% |
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.