X0609 4 2026-10-01 0001098146 PATRIOT NATIONAL BANCORP INC PNBK 0001504590 Sugarman Steven false C/O PATRIOT NATIONAL BANCORP, INC. 900 BEDFORD STREET STAMFORD CT 06901 1 1 President and CEO 0 Voting Common Stock 2026-10-01 4 M 0 1147031 0 A 3485140 D Voting Common Stock 2026-10-01 4 F 0 583609 1 D 2901531 D Voting Common Stock 9019978 I By Steven and Ainslie Sugarman Living Trust Restricted Stock Units 0 2026-10-01 4 M 0 1147031 0 D 2026-10-01 2026-10-01 Voting Common Stock 1147031 133884 D On October 1, 2026, upon the expiration of the restricted period on 1,147,031 restricted stock units ("RSUs") granted to the reporting person pursuant to an award agreement effective October 1, 2025 (previously disclosed in a Form 4 filed on October 23, 2025), 1,147,031 RSUs settled and the Issuer delivered shares of Common Stock in settlement thereof. No consideration was paid by the Reporting Person in connection with the settlement. Represents 583,609 shares of Common Stock withheld by the Issuer upon settlement of the RSUs to satisfy the Reporting Person's applicable tax withholding obligations. The shares were withheld at a price of $1.00 per share, representing the closing price of the Issuer's Common Stock on September 25, 2026. The withheld shares were not delivered to the Reporting Person. The Trust is a revocable living trust for the benefit of the Reporting Person and his spouse. The Reporting Person and his spouse are the trustees of the Trust. /s/ Steven Sugarman 2026-10-02