Media Contact: Kathleen Hart VP, Public Relations Manager Telephone: (401) 348-1495 E-mail: kahart@washtrust.com Date: April 20, 2026 FOR IMMEDIATE RELEASE Exhibit 99.1 NASDAQ: WASH Washington Trust Reports First Quarter 2026 Results WESTERLY, R.I., April 20, 2026 (PR NEWSWIRE)…Washington Trust Bancorp, Inc. (Nasdaq: WASH; "Washington Trust" or the "Corporation"), today reported first quarter 2026 net income of $12.6 million, or $0.66 per diluted share, compared to $16.0 million, or $0.83 per diluted share, ...