X0609 4 2026-09-22 0 0001013237 FACTSET RESEARCH SYSTEMS INC FDS 0001670088 Viswanathan Sanoke false 45 GLOVER AVENUE NORWALK CT 06850 1 1 0 0 Chief Executive Officer 0 Common Stock 2026-09-22 4 F 0 8065 276.42 D 50267 D Represents the number of shares withheld to cover the cost of taxes upon vesting of restricted stock units granted on September 22, 2025, which was previously reported. The restricted stock units vest 25% annually on the anniversary date of the grant and are fully vested after four years. /s/ WINNIFRED LEWIS, Attorney in Fact for Sanoke Viswanathan 2026-09-24