Jacquelyn L Sumer insider trades: Cullinan Therapeutics (CGEM) stock sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Jacquelyn reports to the SEC
Open-market buys and sales
12 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Feb 24, 2026 | CGEM | ↓ Sell | 3,601 | $14.47 | $52K | Direct | Feb 25, 2026 (1d) |
| Feb 20, 2026 | CGEM | ↓ Sell | 3,742 | $13.62 | $51K | Direct | Feb 23, 2026 (3d) |
| Dec 18, 2025 | CGEM | ↓ Sell | 3,480 | $9.67 | $34K | Direct | Dec 19, 2025 (1d) |
| Feb 25, 2025 | CGEM | ↓ Sell | 3,756 | $8.53 | $32K | Direct | Feb 27, 2025 (2d) |
| Dec 18, 2024 | CGEM | ↓ Sell | 3,482 | $11.41 | $40K | Direct | Dec 20, 2024 (2d) |
| Dec 21, 2023 | CGEM | ↓ Sell | 1,400 | $8.50 | $12K | Direct | Dec 22, 2023 (1d) |
| Dec 18, 2023 | CGEM | ↓ Sell | 290 | $8.22 | $2K | Direct | Dec 20, 2023 (2d) |
| Jun 20, 2023 | CGEM | ↓ Sell | 291 | $12.94 | $4K | Direct | Jun 21, 2023 (1d) |
| May 18, 2023 | CGEM | ↓ Sell | 291 | $8.76 | $3K | Direct | May 19, 2023 (1d) |
| Apr 18, 2023 | CGEM | ↓ Sell | 290 | $10.71 | $3K | Direct | Apr 20, 2023 (2d) |
| Mar 20, 2023 | CGEM | ↓ Sell | 305 | $11.32 | $3K | Direct | Mar 27, 2023 (7d) |
| Jun 1, 2022 | GNCA | ↓ Sell | 2,500 | $0.06 | $150 | Direct | Jun 2, 2022 (1d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other CGEM insiders
Open-market trades in the last 12 months
About Jacquelyn L Sumer's insider trades
Jacquelyn L Sumer is Chief Legal Officer at Cullinan Therapeutics (CGEM). Since Jun 1, 2022, Jacquelyn has reported no open-market purchases and 12 sales worth $236K on SEC Form 4. In the last 12 months: 3 sales ($137K).
Their filings also include grants and awards (9 filings). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every CGEM insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.