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buyModerate

Lynx1 Capital Management LP bought $9.8M of CGEM

owner at Cullinan Therapeutics, Inc.. 1,459,641 shares at an average of $6.73, traded Oct 8, 2025, filed Oct 10, 2025.

Conviction score
46
Value
$9.8M
1,459,641 shares
Holdings after
8,549,084
+21% from before
From 52-week low
+12%
low $5.75, close $6.45
From 52-week high
-63%
high $17.61, as of Oct 8, 2025

Score components

  • Role
    10% owner
    +12
  • Trade size
    $9.8M at market
    +25
  • Relative to holdings
    Holdings up 21%
    +6
  • Price context
    63% below the 52-week high
    +8
  • Cluster
    No other insider buying within 14 days
    0
  • Repeat buying
    First buy in 90 days
    0
  • Track record
    Too few past buys to judge (1 with prices)
    0
  • Outside holder
    A 10% owner who is not an officer or director
    -5

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 -2.8%, 3m +47.3%, 6m +96.5%.

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.

CGEMOct 9, 2026 · close 15.53
Since filing Oct 10, 2025: +109.9%SPY +20.4% · excess +89.4%

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 0000902664-25-004379, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Oct 8, 2025POpen-market purchase
Common stock, $0.0001 par value per share ("Common Stock")indirect: See footnote
+556,300$6.46$3.6M7,645,743Oct 10, 2025
Oct 9, 2025POpen-market purchase
Common Stockindirect: See footnote
+626,043$6.70$4.2M8,271,786Oct 10, 2025
Oct 10, 2025POpen-market purchase
Common Stockindirect: See footnote
+277,298$7.36$2.0M8,549,084Oct 10, 2025

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%
0Weak
CGEMsell10b5-1
Cullinan Therapeutics, Inc.
Jennifer Michaelson
Chief Scientific Officer
$117k
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%

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.

Lynx1 Capital Management LP bought $9.8M of CGEM | InsiderTell