CGEM insider buying – Cullinan Therapeutics, Inc.
11 insider purchases since 2016 worth $45.3M by 10 different insiders. Last 12 months: 0 purchases, $0. Most recent filing: 2025-10-30.
Mid company Public float $442M (latest 10-K, SEC).
Same time range as the chart above - each mark sits under the week of the trade. Circles = purchases (height = price paid, size = amount), red triangles = open-market sales of $50k+. Prices as reported, not adjusted for later stock splits. 4 older purchases (before the 5-year window) are listed in the table below.
Purchases are open-market buys (SEC Form 4, code "P") - insiders paying with their own money. Sales are open-market sales (code "S") of $50,000 or more; many sales are pre-planned (Rule 10b5-1) or made for taxes and diversification. Each row links to the original filing.
Bought, sold, still holding?
| Insider | Bought | First / last buy | Sold since 2016 | Holds now* | Status |
|---|---|---|---|---|---|
| Lynx1 Capital Management LP 10% Owner | $11.9M 2× · 1,708,390 sh | 2025-10-08 2025-10-14 | – | 17,361,949 shares as of 2025-10-21 | Holds - never sold |
| BVF INC/IL 10% Owner | $10.1M 1× · 1,109,900 sh | 2022-05-12 2022-05-12 | – | 3,599,615 shares as of 2022-05-16 | Holds - never sold |
| BIOTECHNOLOGY VALUE FUND L P 10% Owner | $8.3M 1× · 751,396 sh | 2022-06-01 2022-06-01 | – | 4,058,854 shares as of 2022-06-03 | Holds - never sold |
| GADICKE ANSBERT Director | $6.3M 1× · 300,000 sh | 2021-01-12 2021-01-12 | 8× · $8.9M last 2021-09-16 | 7,892,819 shares as of 2021-09-20 | Sold part |
| F2 MG Ltd Director | $4.2M 1× · 200,000 sh | 2021-01-12 2021-01-12 | – | 734,682 shares as of 2021-01-14 | Holds - never sold |
| BVF II GP LLC 10% Owner | $3.0M 1× · 276,000 sh | 2022-04-01 2022-04-01 | – | 558,854 shares as of 2023-01-19 | Holds - never sold |
| Nichols Weston 10% Owner | $1.4M 1× · 165,667 sh | 2025-10-28 2025-10-28 | – | 8,963,500 shares as of 2025-10-30 | Holds - never sold |
| AHMED NADIM CEO | $100,316 1× · 8,090 sh | 2022-06-06 2022-06-06 | 5× · $724,570 last 2026-02-24 | 390,803 shares as of 2026-02-25 | Sold part |
| Hughes Owen CEO | $52,500 1× · 2,500 sh | 2021-01-12 2021-01-12 | – | 506,226 shares as of 2021-01-14 | Holds - never sold |
| Trigilio Jeffrey CFO | $47,250 1× · 2,250 sh | 2021-01-12 2021-01-12 | 2× · $627,153 last 2021-10-15 | 133,919 shares as of 2024-02-23 | Sold part |
* Shares held after the insider's most recent SEC filing for this company (all share classes, direct and indirect). If an insider stops filing, later changes are not known.
Insider buying and selling by year
| Year | Purchases | Bought | Buyers | Sales | Sold |
|---|---|---|---|---|---|
| 2026 | 0 | – | – | 14 | $2.1M |
| 2025 | 3 | $13.3M | 2 | 3 | $256,231 |
| 2024 | 0 | – | – | 10 | $4.1M |
| 2023 | 0 | – | – | 1 | $147,729 |
| 2022 | 4 | $21.4M | 4 | 7 | $7.1M |
| 2021 | 4 | $10.6M | 4 | 28 | $21.2M |
Insider purchases
| Filed | Insider | Role | Shares | Avg price | Value | Holdings | Filing |
|---|---|---|---|---|---|---|---|
| 2025-10-30 | Nichols Weston | 10% Owner | 165,667 | $8.40 | $1.4M | +1.9% | SEC |
| 2025-10-21 | Lynx1 Capital Management LP | 10% Owner | 248,749 | $8.46 | $2.1M | +2.9% | SEC |
| 2025-10-10 | Lynx1 Capital Management LP | 10% Owner | 1,459,641 | $6.73 | $9.8M | +20.6% | SEC |
| 2022-06-07 | AHMED NADIM | CEO | 8,090 | $12.40 | $100,316 | SEC | |
| 2022-06-03 | BIOTECHNOLOGY VALUE FUND L P | 10% Owner | 751,396 | $11.00 | $8.3M | +22.7% | SEC |
| 2022-05-16 | BVF INC/IL | 10% Owner | 1,109,900 | $9.07 | $10.1M | +43.6% | SEC |
| 2022-04-05 | BVF II GP LLC | 10% Owner | 276,000 | $10.75 | $3.0M | +9.9% | SEC |
| 2021-01-14 | Trigilio Jeffrey | CFO | 2,250 | $21.00 | $47,250 | SEC | |
| 2021-01-14 | Hughes Owen | CEO | 2,500 | $21.00 | $52,500 | +0.5% | SEC |
| 2021-01-14 | GADICKE ANSBERT | Director | 300,000 | $21.00 | $6.3M | +3.9% | SEC |
| 2021-01-14 | F2 MG Ltd | Director | 200,000 | $21.00 | $4.2M | +47.4% | SEC |
Insider sales
| Filed | Insider | Role | Shares | Avg price | Value | Type | Filing |
|---|---|---|---|---|---|---|---|
| 2026-09-10 | Michaelson Jennifer | Officer | 8,000 | $21.57 | $172,560 | Sale | SEC |
| 2026-08-14 | Michaelson Jennifer | Officer | 30,000 | $20.26 | $607,800 | Sale | SEC |
| 2026-07-07 | Michaelson Jennifer | Officer | 8,000 | $17.82 | $142,560 | Sale | SEC |
| 2026-05-06 | Michaelson Jennifer | Officer | 8,000 | $14.62 | $116,996 | Sale | SEC |
| 2026-03-09 | Michaelson Jennifer | Officer | 8,000 | $15.68 | $125,440 | Sale | SEC |
| 2026-02-25 | SUMER JACQUELYN L | Officer | 3,601 | $14.47 | $52,106 | Sale | SEC |
| 2026-02-25 | Jones Jeffrey Alan | Officer | 4,582 | $14.47 | $66,302 | Sale | SEC |
| 2026-02-25 | AHMED NADIM | CEO | 13,515 | $14.47 | $195,562 | Sale | SEC |
| 2026-02-25 | Michaelson Jennifer | Officer | 5,353 | $14.31 | $76,617 | Sale | SEC |
| 2026-02-23 | SUMER JACQUELYN L | Officer | 3,742 | $13.62 | $50,966 | Sale | SEC |
| 2026-02-23 | Michaelson Jennifer | Officer | 11,742 | $14.08 | $165,366 | Sale | SEC |
| 2026-02-23 | Jones Jeffrey Alan | Officer | 4,982 | $13.62 | $67,855 | Sale | SEC |
| 2026-02-23 | Fenton Mary Kay | CFO | 4,398 | $13.62 | $59,901 | Sale | SEC |
| 2026-02-23 | AHMED NADIM | CEO | 16,381 | $13.62 | $223,109 | Sale | SEC |
| 2025-12-29 | AHMED NADIM | CEO | 9,922 | $10.01 | $99,319 | Sale | SEC |
Showing the latest 15 of 63 sales of $50,000+ since 2016.
Compiled automatically from public SEC filings. Not investment advice. Get every new insider purchase in the daily report.
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