X0508 4 2025-12-03 0000737468 WASHINGTON TRUST BANCORP INC WASH 0001915239 Gencarella Joseph P. 11 BLUEBILL AVE. APT. 604 NAPLES FL 34108 true false Common Stock 2025-12-03 5 W false E 39 0 A 452.0767 I By MidwayFour, LLC Common Stock 4505.228 D Reflects securities acquired through inheritance from a family member and held by MidwayFour, LLC, of which Mr. Gencarella is a member. Mr. Gencarella disclaims beneficial ownership of the shares held by MidwayFour, LLC except to the extent of his pecuniary interest therein. The acquisition through inheritance is exempt from Section 16(b) pursuant to Rule 16b-5. The reporting person is voluntarily reporting this transaction on Form 4 earlier than required under Rule 16a-3(a). Balance reflects acquisitions pursuant to dividend reinvestments exempt from Form 4 reporting under Rule 16a-11. Held by MidwayFour, LLC of which Mr. Gencarella is a member. Mr. Gencarella disclaims beneficial ownership of the shares held by MidwayFour, LLC except to the extent of his pecuniary interest therein. Balance reflects acquisitions pursuant to dividend reinvestments exempt from Form 4 reporting under Rule 16a-11 /s/Kristen L. DiSanto, Attorney-in-Fact 2025-12-08