Jacquelyn L Sumer sold $34k of CGEM
Chief Legal Officer at Cullinan Therapeutics, Inc.. 3,480 shares at an average of $9.67, traded Dec 18, 2025, filed Dec 19, 2025.
Score components
- +15RoleOfficer
- +6Trade size$34k at market
- 0Share of holdings soldSold 2.5% of holdings
- +15Cluster4 insiders selling within 14 days
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.
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 0001193125-25-327033, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Dec 18, 2025 | SOpen-market sale Common Stock | -3,480 | $9.67 | $34k | 135,432 | Dec 19, 2025 |
Related signals
Other insiders at Cullinan Therapeutics, Inc. and this insider’s other filings.
| Score | Company | Insider | Value | Holdings | Filed |
|---|---|---|---|---|---|
| 0Weak | Cullinan Therapeutics, Inc. | Jennifer Michaelson Chief Scientific Officer | $173k 8,000 shares | -5% | |
| 6Weak | Cullinan Therapeutics, Inc. | Jennifer Michaelson Chief Scientific Officer | $125k 8,000 shares | -4% | |
| 15Weak | Cullinan Therapeutics, Inc. | Jennifer Michaelson Chief Scientific Officer | $25k 1,780 shares | -1% | |
| 52Moderate | Cullinan Therapeutics, Inc. | Nadim Ahmed President and CEO | $196k 13,515 shares | -3% | |
| 37Weak | Cullinan Therapeutics, Inc. | Jacquelyn L Sumer Chief Legal Officer | $52k 3,601 shares | -3% | |
| 38Weak | Cullinan Therapeutics, Inc. | Jeffrey Alan Jones Chief Medical Officer | $66k 4,582 shares | -3% | |
| 18Weak | Cullinan Therapeutics, Inc. | Jennifer Michaelson Chief Scientific Officer | $77k 5,353 shares | -3% | |
| 52Moderate | Cullinan Therapeutics, Inc. | Nadim Ahmed President and CEO | $223k 16,381 shares | -4% | |
| 37Weak | Cullinan Therapeutics, Inc. | Jacquelyn L Sumer Chief Legal Officer | $51k 3,742 shares | -3% | |
| 6Weak | Cullinan Therapeutics, Inc. | Jennifer Michaelson Chief Scientific Officer | $165k 11,742 shares | -6% |
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.