X0508 4 2024-02-01 0 0001013237 FACTSET RESEARCH SYSTEMS INC FDS 0001782865 Moskoff Gregory T C/O FACTSET RESEARCH SYSTEMS INC. 45 GLOVER AVENUE NORWALK CT 06850 0 1 0 0 MD,Controller and CAO 0 Common Stock 2024-02-01 4 A 0 11 0 A 180.7766 D Common Stock 2025-02-01 4 F 0 2 474.41 D 178.7766 D Common Stock 2025-02-03 4 A 0 11 0 A 189.7766 D Common Stock 2026-02-01 4 F 0 4 254.36 D 185.7766 D Common Stock 2026-02-03 4 F 0 3 222.62 D 182.7766 D Restricted stock units that vested 50% annually on the anniversary date of the grant and were fully vested after two years. Represents the number of shares withheld to cover the cost of taxes upon vesting of RSUs granted February 1, 2024. Represents the number of shares withheld to cover the cost of taxes upon vesting of RSUs granted February 3, 2025. /s/ WINNIFRED LEWIS, Attorney in Fact for Gregory T. Moskoff 2026-02-17