There have been 50 recent insider transactions recorded for Cullinan Therapeutics, Inc. (CGEM), including 22 buys and 25 sells. Total insider buying was valued at $36.66M and total insider selling at $1.4M.
Notable insiders with recent activity include Michaelson Jennifer, Ahmed Nadim, Sumer Jacquelyn L. Insider transactions can provide insights into how company leadership views the stock's valuation and future prospects.
Insider Transactions — CGEM
| Date |
Name |
Role |
Transaction |
Shares |
Avg. Price |
Value |
Shares Owned |
| 2026-03-05 |
Michaelson Jennifer |
Chief Scientific Officer |
Option Exercise (Sell) |
4,000 |
$4.30 |
$17.2K |
120,987 |
| 2026-02-25 |
Michaelson Jennifer |
Chief Scientific Officer |
Informative Sell |
1,780 |
$14.14 |
$25.17K |
174,844 |
| 2026-02-24 |
Ahmed Nadim |
President and CEO |
Informative Sell |
13,515 |
$14.47 |
$195.56K |
390,803 |
| 2026-02-24 |
Michaelson Jennifer |
Chief Scientific Officer |
Informative Sell |
3,601 |
$14.47 |
$52.11K |
176,624 |
| 2026-02-24 |
Sumer Jacquelyn L |
Chief Legal Officer |
Informative Sell |
3,601 |
$14.47 |
$52.11K |
128,089 |
| 2026-02-24 |
Jones Jeffrey Alan |
Chief Medical Officer |
Informative Sell |
4,582 |
$14.47 |
$66.3K |
159,968 |
| 2026-02-23 |
Michaelson Jennifer |
Chief Scientific Officer |
Informative Sell |
1,752 |
$13.99 |
$24.51K |
180,225 |
| 2026-02-20 |
Fenton Mary Kay |
Chief Financial Officer |
Informative Sell |
4,398 |
$13.62 |
$59.9K |
126,380 |
| 2026-02-20 |
Ahmed Nadim |
President and CEO |
Informative Sell |
16,381 |
$13.62 |
$223.11K |
404,318 |
| 2026-02-20 |
Michaelson Jennifer |
Chief Scientific Officer |
Option Exercise (Sell) |
8,000 |
$4.30 |
$34.4K |
124,987 |
| 2026-02-20 |
Sumer Jacquelyn L |
Chief Legal Officer |
Informative Sell |
3,742 |
$13.62 |
$50.97K |
131,690 |
| 2026-02-20 |
Jones Jeffrey Alan |
Chief Medical Officer |
Informative Sell |
4,982 |
$13.62 |
$67.85K |
164,550 |
| 2026-02-18 |
Fenton Mary Kay |
Chief Financial Officer |
RSU Award |
68,750 |
- |
- |
130,778 |
| 2026-02-18 |
Ahmed Nadim |
President and CEO |
RSU Award |
828,000 |
$12.44 |
$10.3M |
828,000 |
| 2026-02-18 |
Savill Corrine |
Chief Business Officer |
RSU Award |
175,000 |
$12.44 |
$2.18M |
175,000 |
| 2026-02-18 |
Michaelson Jennifer |
Chief Scientific Officer |
RSU Award |
115,000 |
$12.44 |
$1.43M |
115,000 |
| 2026-02-18 |
Sumer Jacquelyn L |
Chief Legal Officer |
RSU Award |
230,000 |
$12.44 |
$2.86M |
230,000 |
| 2026-02-18 |
Jones Jeffrey Alan |
Chief Medical Officer |
RSU Award |
300,000 |
$12.44 |
$3.73M |
300,000 |
| 2026-02-12 |
Michaelson Jennifer |
Chief Scientific Officer |
Informative Sell |
416 |
$12.03 |
$5K |
128,219 |
| 2026-01-22 |
Michaelson Jennifer |
Chief Scientific Officer |
Informative Sell |
4,000 |
$12.30 |
$49.2K |
128,635 |
| 2025-12-31 |
Fenton Mary Kay |
Chief Financial Officer |
RSU Award |
27 |
$6.49 |
$175.23 |
62,028 |
| 2025-12-23 |
Ahmed Nadim |
President and CEO |
Informative Sell |
9,922 |
$10.01 |
$99.32K |
420,699 |
| 2025-12-19 |
Michaelson Jennifer |
Chief Scientific Officer |
Informative Sell |
1,345 |
$10.01 |
$13.46K |
132,635 |
| 2025-12-18 |
Michaelson Jennifer |
Chief Scientific Officer |
Informative Sell |
2,898 |
$9.67 |
$28.02K |
133,980 |
| 2025-12-18 |
Sumer Jacquelyn L |
Chief Legal Officer |
Informative Sell |
3,480 |
$9.67 |
$33.65K |
135,432 |
| 2025-12-18 |
Jones Jeffrey Alan |
Chief Medical Officer |
Informative Sell |
4,632 |
$9.67 |
$44.79K |
169,532 |
| 2025-12-15 |
Michaelson Jennifer |
Chief Scientific Officer |
Informative Sell |
995 |
$11.90 |
$11.84K |
136,878 |
| 2025-12-12 |
Michaelson Jennifer |
Chief Scientific Officer |
Informative Sell |
2,148 |
$12.38 |
$26.59K |
137,873 |
| 2025-11-24 |
Michaelson Jennifer |
Chief Scientific Officer |
Informative Sell |
4,000 |
$12.30 |
$49.2K |
138,004 |
| 2025-10-28 |
Lynx1 Capital Management Lp |
10 Percent Owner |
Informative Buy |
165,667 |
$8.40 |
$1.39M |
8,963,500 |
| 2025-10-17 |
Lynx1 Capital Management Lp |
10 Percent Owner |
Informative Buy |
32,217 |
$7.84 |
$252.57K |
8,797,833 |
| 2025-10-16 |
Lynx1 Capital Management Lp |
10 Percent Owner |
Informative Buy |
150,000 |
$8.86 |
$1.33M |
8,765,616 |
| 2025-10-15 |
Lynx1 Capital Management Lp |
10 Percent Owner |
Informative Buy |
51,500 |
$7.94 |
$409.05K |
8,615,616 |
| 2025-10-14 |
Lynx1 Capital Management Lp |
10 Percent Owner |
Informative Buy |
15,032 |
$7.59 |
$114.05K |
8,564,116 |
| 2025-10-10 |
Lynx1 Capital Management Lp |
10 Percent Owner |
Informative Buy |
277,298 |
$7.36 |
$2.04M |
8,549,084 |
| 2025-10-09 |
Lynx1 Capital Management Lp |
10 Percent Owner |
Informative Buy |
626,043 |
$6.70 |
$4.19M |
8,271,786 |
| 2025-10-08 |
Lynx1 Capital Management Lp |
10 Percent Owner |
Unknown |
- |
- |
- |
7,089,443 |
| 2025-10-08 |
Lynx1 Capital Management Lp |
10 Percent Owner |
Informative Buy |
556,300 |
$6.46 |
$3.59M |
7,645,743 |
| 2025-08-07 |
Allen Andrew R |
Officer |
Unknown |
- |
- |
- |
- |
| 2025-08-07 |
Allen Andrew R |
Director |
RSU Award |
79,456 |
$7.03 |
$558.58K |
79,456 |
| 2025-08-07 |
Doyle Mittie |
Officer |
Unknown |
- |
- |
- |
- |
| 2025-08-07 |
Doyle Mittie |
Director |
RSU Award |
79,456 |
$7.03 |
$558.58K |
79,456 |
| 2025-06-12 |
Webster Stephen W |
Director |
RSU Award |
38,513 |
$8.95 |
$344.69K |
38,513 |
| 2025-06-12 |
Rosenberg Anthony |
Director |
RSU Award |
38,513 |
$8.95 |
$344.69K |
38,513 |
| 2025-06-12 |
Meek David D. |
Director |
RSU Award |
38,513 |
$8.95 |
$344.69K |
38,513 |
| 2025-06-12 |
Martin Anne-marie |
Director |
RSU Award |
38,513 |
$8.95 |
$344.69K |
38,513 |
| 2025-06-12 |
Ryan David P. |
Director |
RSU Award |
38,513 |
$8.95 |
$344.69K |
38,513 |
| 2025-02-25 |
Ahmed Nadim |
President and CEO |
Informative Sell |
12,529 |
$8.53 |
$106.87K |
430,621 |
| 2025-02-25 |
Michaelson Jennifer |
Chief Scientific Officer |
Informative Sell |
3,756 |
$8.53 |
$32.04K |
142,004 |
| 2025-02-25 |
Sumer Jacquelyn L |
Chief Legal Officer |
Informative Sell |
3,756 |
$8.53 |
$32.04K |
136,895 |
■ Informative Buy/Sell — open market transaction (most significant)
■ Uninformative Buy — award, option exercise, conversion
■ Uninformative Sell — tax withholding, award vest sale
■ Neutral — gift, trust, expiry
