Jennifer Michaelson sold $173k of CGEM
Chief Scientific Officer at Cullinan Therapeutics, Inc.. 8,000 shares at an average of $21.57, traded Sep 8, 2026, filed Sep 10, 2026.
Score components
- +15RoleOfficer
- +11Trade size$173k at market
- 0Share of holdings soldSold 4.8% of holdings
- 0ClusterNo other insider selling within 14 days
- -15Exercise and sellShares came from an option exercise in the same filing
- -2010b5-1 planPre-scheduled under a 10b5-1 plan
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 0001193125-26-387381, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Sep 8, 2026 | MOption exercise Common Stock10b5-1 | +4,000 | $4.30 | $17k | 166,844 | 32 d ago |
| Sep 8, 2026 | SOpen-market sale Common Stock10b5-1 | -8,000 | $21.57 | $173k | 158,844 | 32 d ago |
| Sep 8, 2026 | MOption exercise Stock Option (Right to Buy)derivative10b5-1 | -4,000 | $0.00 | $0 | 78,987 | 32 d ago |
Related signals
Other insiders at Cullinan Therapeutics, Inc. and this insider’s other filings.
| Score | Company | Insider | Value | Holdings | Filed |
|---|---|---|---|---|---|
| 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% | |
| 38Weak | Cullinan Therapeutics, Inc. | Jeffrey Alan Jones Chief Medical Officer | $68k 4,982 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.