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sellWeak10b5-1 plan

Jennifer Michaelson sold $117k of CGEM

Chief Scientific Officer at Cullinan Therapeutics, Inc.. 8,000 shares at an average of $14.62, traded May 5, 2026, filed May 6, 2026.

Warning score
0
Value
$117k
8,000 shares
Holdings after
166,844
-5% from before
From 52-week low
+160%
low $5.75, close $14.94
From 52-week high
-8%
high $16.30, as of May 5, 2026

Score components

  • Role
    Officer
    +15
  • Trade size
    $117k at market
    +10
  • Share of holdings sold
    Sold 4.6% of holdings
    0
  • Cluster
    No other insider selling within 14 days
    0
  • Exercise and sell
    Shares came from an option exercise in the same filing
    -15
  • 10b5-1 plan
    Pre-scheduled under a 10b5-1 plan
    -20

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 -9.9%, 3m +17.5%, 6m -.

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 May 6, 2026: +3.6%SPY +6.6% · excess -3.0%

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 0001193125-26-209307, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
May 5, 2026MOption exercise
Common Stock10b5-1
+4,000$4.30$17k174,844May 6, 2026
May 5, 2026SOpen-market sale
Common Stock10b5-1
-7,800$14.60$114k167,044May 6, 2026
May 5, 2026SOpen-market sale
Common Stock10b5-1
-200$15.58$3,116166,844May 6, 2026
May 5, 2026MOption exercise
Stock Option (Right to Buy)derivative10b5-1
-4,000$0.00$0116,987May 6, 2026

Related signals

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

ScoreCompanyInsiderValueHoldingsFiled
0Weak
CGEMsell10b5-1
Cullinan Therapeutics, Inc.
Jennifer Michaelson
Chief Scientific Officer
$173k
8,000 shares
-5%
5Weak
CGEMsell10b5-1
Cullinan Therapeutics, Inc.
Jennifer Michaelson
Chief Scientific Officer
$608k
30,000 shares
-16%
0Weak
CGEMsell10b5-1
Cullinan Therapeutics, Inc.
Jennifer Michaelson
Chief Scientific Officer
$143k
8,000 shares
-5%
6Weak
CGEMsell 510b5-1
Cullinan Therapeutics, Inc.
Jennifer Michaelson
Chief Scientific Officer
$125k
8,000 shares
-4%
15Weak
CGEMsell 510b5-1
Cullinan Therapeutics, Inc.
Jennifer Michaelson
Chief Scientific Officer
$25k
1,780 shares
-1%
52Moderate
CGEMsell 5
Cullinan Therapeutics, Inc.
Nadim Ahmed
President and CEO
$196k
13,515 shares
-3%
37Weak
CGEMsell 5
Cullinan Therapeutics, Inc.
Jacquelyn L Sumer
Chief Legal Officer
$52k
3,601 shares
-3%
38Weak
CGEMsell 5
Cullinan Therapeutics, Inc.
Jeffrey Alan Jones
Chief Medical Officer
$66k
4,582 shares
-3%
18Weak
CGEMsell 510b5-1
Cullinan Therapeutics, Inc.
Jennifer Michaelson
Chief Scientific Officer
$77k
5,353 shares
-3%
52Moderate
CGEMsell 5
Cullinan Therapeutics, Inc.
Nadim Ahmed
President and CEO
$223k
16,381 shares
-4%

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.

Jennifer Michaelson sold $117k of CGEM | InsiderTell