Exhibit 99(a) News Release 5 Sarnowski Drive, Glenville, New York, 12302 (518) 377-3311 Fax: (518) 381-3668 Subsidiary: Trustco Bank Nasdaq -- TRST Contact: Robert Leonard Executive Vice President (518) 381-3693 FOR IMMEDIATE RELEASE: TRUSTCO DELIVERS ONCE AGAIN WITH SECOND QUARTER RESULTS NET INTEREST MARGIN UP 3.7% ON LOAN GROWTH OF 3.8% Executive Snapshot: • Continued solid financial results: o Consolidated equity to assets increased 4.9% to 10.73% as of June 30, 2024 from 10.23% as of June 30, 2023 Page ...