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buyNotable cluster of 4

James B. Tananbaum bought $3.1M of ALMS

director, owner at ALUMIS INC.. 507,874 shares at an average of $6.09, traded Nov 17, 2025, filed Nov 19, 2025.

Conviction score
69
Value
$3.1M
507,874 shares
Holdings after
2,542,003
+25% from before
From 52-week low
+99%
low $2.80, close $5.57
From 52-week high
-46%
high $10.35, as of Nov 17, 2025

Score components

  • Role
    Director
    +15
  • Trade size
    $3.1M at market
    +25
  • Relative to holdings
    Holdings up 25%
    +6
  • Price context
    46% below the 52-week high
    +8
  • Cluster
    4 insiders buying within 14 days
    +15
  • Repeat buying
    First buy in 90 days
    0
  • Track record
    Too few past buys to judge (0 with prices)
    0

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.

This signal so far: 1m +71.8%, 3m +318.7%, 6m +235.5%.

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.

ALMSOct 12, 2026 · close 7.06
Since filing Nov 19, 2025: +7.5%SPY +18.7% · excess -11.2%

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 0001104659-25-114266, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Nov 17, 2025POpen-market purchase
Common Stockindirect: See Footnote
+50,000$5.60$280k2,084,129Nov 19, 2025
Nov 17, 2025POpen-market purchase
Common Stockindirect: See Footnote
+150,000$5.59$839k2,234,129Nov 19, 2025
Nov 18, 2025POpen-market purchase
Common Stockindirect: See Footnote
+117,374$6.19$727k2,351,503Nov 19, 2025
Nov 19, 2025POpen-market purchase
Common Stockindirect: See Footnote
+190,500$6.56$1.2M2,542,003Nov 19, 2025

Related signals

Other insiders at ALUMIS INC. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
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%
38Weak
ALMSsell 6
ALUMIS INC.
Roy C. Hardiman
Chief Business & Strategy Ofcr
$71k
2,692 shares
-1%
51Moderate
ALMSsell 6
ALUMIS INC.
John R. Schroer
Chief Financial Officer
$87k
3,282 shares
-12%
38Weak
ALMSsell 6
ALUMIS INC.
David M Goldstein
Chief Scientific Officer
$68k
2,596 shares
-8%
38Weak
ALMSsell 6
ALUMIS INC.
Jorn Drappa
Chief Medical Officer
$65k
2,447 shares
-4%
38Weak
ALMSsell 6
ALUMIS INC.
Mark Christopher Bradley
Chief Development Officer
$68k
2,572 shares
-5%
41Moderate
ALMSsell 6
ALUMIS INC.
Sanam Pangali
Chief Legal Officer
$36k
1,364 shares
-12%
21Weak
ALMSsell
ALUMIS INC.
Sanam Pangali
Chief Legal Officer
$140k
5,000 shares
-31%
66Notable
ALMSbuy 4
ALUMIS INC.
Srinivas Akkaraju
director
$10.0M
588,235 shares
+46%

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.

James B. Tananbaum bought $3.1M of ALMS | InsiderTell