X0206 3 2025-12-16 0 0000357301 TRUSTCO BANK CORP N Y TRST 0002102221 McCormick Lauren Ann C/O TRUSTCO BANK CORP NY 5 SARNOWSKI DRIVE GLENVILLE NY 12302 true VP,Treasurer, Asst. Corp. Sec. COMMON STOCK 515 D COMMON STOCK 42923 I BY SPOUSE RESTRICTED STOCK UNIT 0 COMMON STOCK 383 D RESTRICTED STOCK UNIT 0 COMMON STOCK 92 D RESTRICTED STOCK UNIT 0 COMMON STOCK 62 D Each restricted stock unit represents a contingent right to receive a payment in cash equal to the fair market value of issued common stock, as determined on the date of vesting of the restricted stock unit. The restricted stock units vest in three equal annual installments beginning on November 18, 2026. Settlement of the restricted stock units will be settled in cash. The restricted stock units vest in three equal annual installments beginning on November 19, 2025. Settlement of the restricted stock units will be settled in cash. The restricted stock units vest in three equal annual installments beginning on November 21, 2024. Settlement of the restricted stock units will be settled in cash. ADDITIONAL SHARES ACQUIRED BY REPORTING PERSON'S PARTICIPATION IN DIVIDENT REINVESTMENT AND/OR EMPLOYEE BENEFIT PLAN WITH DIVIDEND REINVESTMENT. /S/ MICHAEL M OZIMEK, BY POWER OF ATTORNEY 2025-12-22