Jennifer Michaelson - 22 Jan 2026 Form 4 Insider Report for Cullinan Therapeutics, Inc. (CGEM)

Signature
/s/ Jacquelyn Sumer, Attorney-in-Fact
Issuer symbol
CGEM
Transactions as of
22 Jan 2026
Net transactions value
-$49,200
Form type
4
Filing time
23 Jan 2026, 17:00:03 UTC
Previous filing
22 Dec 2025
Next filing
13 Feb 2026

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Michaelson Jennifer Chief Scientific Officer C/O CULLINAN THERAPEUTICS, INC., ONE MAIN STREET, SUITE 1350, CAMBRIDGE /s/ Jacquelyn Sumer, Attorney-in-Fact 23 Jan 2026 0001838061

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction CGEM Common Stock Sale $49,200 -4,000 -3% $12.30 128,635 22 Jan 2026 Direct F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).

Explanation of Responses:

Id Content
F1 Transaction effected pursuant to a plan established pursuant to Rule 10b5-1 on August 7, 2025.