Cullinan Therapeutics, Inc. (CGEM) has 20 known insider and institutional holders on record. The largest holder is Lynx1 Capital Management LP with 8,963,500 shares. Other notable holders include GADICKE ANSBERT and UBS Oncology Impact Fund L.P..
Over the last 12 months, insiders have made 47 transactions in CGEM stock — 22 buys (valued at $36.66M) and 20 sells (valued at $1.18M). Insider buying has outpaced selling during this period, which may signal confidence in the company's prospects.
CGEM Insider Ownership
Top Holder
Lynx1 Capital Management LP
8,963,500 shares
Buys (12 mo)
22
$36.66M value
Sells (12 mo)
20
$1.18M value
12-Month Transaction Activity
Top Insider Holders
| # |
Name |
Role |
Shares Owned |
Last Filed |
Relative Size |
| 1 |
Lynx1 Capital Management Lp |
10 Percent Owner |
8,963,500 |
2025-10-30 |
|
| 2 |
Gadicke Ansbert |
10 Percent Owner |
7,648,268 |
2023-02-10 |
|
| 3 |
Ubs Oncology Impact Fund L.p. |
10 Percent Owner |
7,648,268 |
2021-09-20 |
|
| 4 |
Lampert Mark N |
Director |
4,058,854 |
2022-06-03 |
|
| 5 |
F2 Vision Scs |
10 Percent Owner |
1,301,081 |
2022-08-04 |
|
| 6 |
Jovan-embiricos Morana |
Director |
1,281,952 |
2022-08-04 |
|
| 7 |
F2 Bioscience I 2017 Ltd |
10 Percent Owner |
616,976 |
2022-06-23 |
|
| 8 |
Hughes Owen |
President and CEO |
506,226 |
2021-01-14 |
|
| 9 |
Ahmed Nadim |
President and CEO |
390,803 |
2026-02-25 |
|
| 10 |
Savill Corrine |
Chief Business Officer |
175,000 |
2026-02-19 |
|
| 11 |
Jones Jeffrey Alan |
Chief Medical Officer |
159,968 |
2026-02-25 |
|
| 12 |
Sumer Jacquelyn L |
Chief Legal Officer |
128,089 |
2026-02-25 |
|
| 13 |
Fenton Mary Kay |
Chief Financial Officer |
126,380 |
2026-02-23 |
|
| 14 |
Michaelson Jennifer |
Chief Scientific Officer |
120,987 |
2026-03-09 |
|
| 15 |
Wigginton Jon Marc |
Chief Medical Officer |
116,666 |
2021-01-11 |
|
| 16 |
Trigilio Jeffrey |
Chief Financial Officer |
100,000 |
2024-02-23 |
|
| 17 |
Doyle Mittie |
Director |
79,456 |
2025-08-08 |
|
| 18 |
Allen Andrew R |
Director |
79,456 |
2025-08-08 |
|
| 19 |
Baeuerle Patrick |
Chief Scientific Officer |
76,000 |
2023-02-21 |
|
| 20 |
Zawel Leigh |
See Remarks |
65,000 |
2022-02-15 |
|
Recent Transactions (last 12 months)
| Date |
Name |
Role |
Type |
Shares |
Price |
Value |
| 2026-03-05 |
Michaelson Jennifer |
Chief Scientific Officer |
Option Exercise (Sell) |
4,000 |
$4.30 |
$17.2K |
| 2026-02-25 |
Michaelson Jennifer |
Chief Scientific Officer |
Informative Sell |
1,780 |
$14.14 |
$25.17K |
| 2026-02-24 |
Jones Jeffrey Alan |
Chief Medical Officer |
Informative Sell |
4,582 |
$14.47 |
$66.3K |
| 2026-02-24 |
Sumer Jacquelyn L |
Chief Legal Officer |
Informative Sell |
3,601 |
$14.47 |
$52.11K |
| 2026-02-24 |
Michaelson Jennifer |
Chief Scientific Officer |
Informative Sell |
3,601 |
$14.47 |
$52.11K |
| 2026-02-23 |
Michaelson Jennifer |
Chief Scientific Officer |
Informative Sell |
1,752 |
$13.99 |
$24.51K |
| 2026-02-24 |
Ahmed Nadim |
President and CEO |
Informative Sell |
13,515 |
$14.47 |
$195.56K |
| 2026-02-20 |
Jones Jeffrey Alan |
Chief Medical Officer |
Informative Sell |
4,982 |
$13.62 |
$67.85K |
| 2026-02-20 |
Sumer Jacquelyn L |
Chief Legal Officer |
Informative Sell |
3,742 |
$13.62 |
$50.97K |
| 2026-02-20 |
Michaelson Jennifer |
Chief Scientific Officer |
Option Exercise (Sell) |
8,000 |
$4.30 |
$34.4K |
| 2026-02-20 |
Ahmed Nadim |
President and CEO |
Informative Sell |
16,381 |
$13.62 |
$223.11K |
| 2026-02-20 |
Fenton Mary Kay |
Chief Financial Officer |
Informative Sell |
4,398 |
$13.62 |
$59.9K |
| 2026-02-18 |
Jones Jeffrey Alan |
Chief Medical Officer |
RSU Award |
300,000 |
$12.44 |
$3.73M |
| 2026-02-18 |
Sumer Jacquelyn L |
Chief Legal Officer |
RSU Award |
230,000 |
$12.44 |
$2.86M |
| 2026-02-18 |
Michaelson Jennifer |
Chief Scientific Officer |
RSU Award |
115,000 |
$12.44 |
$1.43M |
| 2026-02-18 |
Savill Corrine |
Chief Business Officer |
RSU Award |
175,000 |
$12.44 |
$2.18M |
| 2026-02-18 |
Ahmed Nadim |
President and CEO |
RSU Award |
828,000 |
$12.44 |
$10.3M |
| 2026-02-18 |
Fenton Mary Kay |
Chief Financial Officer |
RSU Award |
68,750 |
- |
- |
| 2026-02-12 |
Michaelson Jennifer |
Chief Scientific Officer |
Informative Sell |
416 |
$12.03 |
$5K |
| 2026-01-22 |
Michaelson Jennifer |
Chief Scientific Officer |
Informative Sell |
4,000 |
$12.30 |
$49.2K |
| 2025-12-31 |
Fenton Mary Kay |
Chief Financial Officer |
RSU Award |
27 |
$6.49 |
$175.23 |
| 2025-12-23 |
Ahmed Nadim |
President and CEO |
Informative Sell |
9,922 |
$10.01 |
$99.32K |
| 2025-12-19 |
Michaelson Jennifer |
Chief Scientific Officer |
Informative Sell |
1,345 |
$10.01 |
$13.46K |
| 2025-12-18 |
Jones Jeffrey Alan |
Chief Medical Officer |
Informative Sell |
4,632 |
$9.67 |
$44.79K |
| 2025-12-18 |
Sumer Jacquelyn L |
Chief Legal Officer |
Informative Sell |
3,480 |
$9.67 |
$33.65K |
