SUMER JACQUELYN L 4

What Happened
Jacquelyn L. Sumer, Chief Legal Officer of Cullinan Therapeutics (CGEM), sold 3,742 shares on 2026-02-20 at $13.62 per share for a total of $50,966. The filing reports the transaction as a sale (open market or private sale) and a footnote indicates the sale was to cover personal income tax obligations upon vesting of restricted stock units.

Key Details

• Transaction date: 2026-02-20; Price: $13.62; Shares sold: 3,742; Proceeds: $50,966.
• Transaction type/code: Sale (S).
• Footnote: Sale made to satisfy tax withholding on vested RSUs.
• Filing date: 2026-02-23 (appears timely; within required reporting window).
• Shares owned after transaction: not specified in the provided summary.

Context
Sales to cover tax withholding on vested restricted stock units are routine and common for executives and typically reflect tax obligations rather than a directional view on the company. The transaction value here is relatively modest.