X0609 4 2026-03-25 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 2026-03-25 4 M 0 2089043 A 2089043 D Voting Common Stock 9019978 I By Steven and Ainslie Sugarman Living Trust Restricted Stock Units 2026-03-25 4 M 0 4049593 0 A 2026-03-25 2026-03-25 Voting Common Stock 4049593 1699958 D On March 25, 2026, upon the expiration of the restricted period on 4,049,593 restricted stock units ("RSUs") granted to the reporting person on March 20, 2025 (previously disclosed in a Form 4 filed on April 1, 2025), 2,089,043 shares of the issuer's common stock were delivered to the reporting person, with 1,960,550 shares withheld to cover the reporting person's tax obligations in connection with the vesting of the RSUs in accordance with the issuer's tax withholding policy and applicable tax withholding requirements. 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 2026-03-31