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sellModerate cluster of 4

Nadim Ahmed sold $99k of CGEM

President and CEO at Cullinan Oncology, Inc.. 9,922 shares at an average of $10.01, traded Dec 23, 2025, filed Dec 29, 2025.

Warning score
50
Value
$99k
9,922 shares
Holdings after
420,699
-2% from before
From 52-week low
+74%
low $5.75, close $10.00
From 52-week high
-23%
high $12.93, as of Dec 23, 2025

Score components

  • Role
    CEO
    +25
  • Trade size
    $99k at market
    +10
  • Share of holdings sold
    Sold 2.3% of holdings
    0
  • Cluster
    4 insiders selling within 14 days
    +15

What happened after comparable sells

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 +16.9%, 3m +32.3%, 6m +81.7%.

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.

CGEMOct 9, 2026 · close 15.53
Since filing Dec 29, 2025: +53.2%SPY +14.0% · excess +39.2%

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 0001193125-25-335482, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Dec 23, 2025SOpen-market sale
Common Stock
-9,922$10.01$99k420,699Dec 29, 2025

Related signals

Other insiders at Cullinan Oncology, Inc. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
0Weak
CGEMsell10b5-1
Cullinan Oncology, Inc.
Jennifer Michaelson
Chief Scientific Officer
$173k
8,000 shares
-5%
5Weak
CGEMsell10b5-1
Cullinan Oncology, Inc.
Jennifer Michaelson
Chief Scientific Officer
$608k
30,000 shares
-16%
0Weak
CGEMsell10b5-1
Cullinan Oncology, Inc.
Jennifer Michaelson
Chief Scientific Officer
$143k
8,000 shares
-5%
0Weak
CGEMsell10b5-1
Cullinan Oncology, Inc.
Jennifer Michaelson
Chief Scientific Officer
$117k
8,000 shares
-5%
6Weak
CGEMsell 510b5-1
Cullinan Oncology, Inc.
Jennifer Michaelson
Chief Scientific Officer
$125k
8,000 shares
-4%
15Weak
CGEMsell 510b5-1
Cullinan Oncology, Inc.
Jennifer Michaelson
Chief Scientific Officer
$25k
1,780 shares
-1%
52Moderate
CGEMsell 5
Cullinan Oncology, Inc.
Nadim Ahmed
President and CEO
$196k
13,515 shares
-3%
37Weak
CGEMsell 5
Cullinan Oncology, Inc.
Jacquelyn L Sumer
Chief Legal Officer
$52k
3,601 shares
-3%
38Weak
CGEMsell 5
Cullinan Oncology, Inc.
Jeffrey Alan Jones
Chief Medical Officer
$66k
4,582 shares
-3%
18Weak
CGEMsell 510b5-1
Cullinan Oncology, Inc.
Jennifer Michaelson
Chief Scientific Officer
$77k
5,353 shares
-3%

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.

Nadim Ahmed sold $99k of CGEM | InsiderTell