SUMER JACQUELYN L - Insider Non-Derivative Transactions at Cullinan Oncology, Inc. (CGEM) - (SEC)

Updated on January 3, 2026.

According to recent SEC insider information filed on Dec 18, 2025, SUMER JACQUELYN L's relationship to Cullinan Oncology, Inc. (CGEM) is Officer (Chief Legal Officer), and currently has 135,432 shares of Common Stock.

The chart below shows the number of shares owned, and the table shows the recent insider transactions.

You can see similar information for other CGEM insiders.

Related Topics: SEC Topic List.

Data Source: SEC.

SUMER JACQUELYN L - Insider Non-Derivative Transactions of CGEM Common Stock

SUMER JACQUELYN L - Insider Non-Derivative Transactions at CGEM

Items per page:

0 of 0

Date	Transaction	No. of Shares	Price Per Share	Shares Owned After Transactions
Dec 19, 2025	Sell -- (Common Stock)	3480	9.67	135432
Feb 26, 2025	Sell -- (Common Stock)	3756	8.53	136895
Feb 20, 2025	Acquisition -- (Common Stock)	50000	0	140651
Dec 19, 2024	Sell -- (Common Stock)	3482	11.41	90651
Feb 23, 2024	Acquisition -- (Common Stock)	50000	0	94133
Dec 22, 2023	Sell -- (Common Stock)	1400	8.5	44133
Dec 19, 2023	Sell -- (Common Stock)	290	8.22	45533
Jun 21, 2023	Sell -- (Common Stock)	291	12.94	45823
May 19, 2023	Sell -- (Common Stock)	291	8.76	46114
Apr 19, 2023	Sell -- (Common Stock)	290	10.71	46405
Mar 21, 2023	Sell -- (Common Stock)	305	11.32	46695
Feb 18, 2023	Acquisition -- (Common Stock)	47000	0	47000