X0609 4 2026-09-23 0 0001013237 FACTSET RESEARCH SYSTEMS INC FDS 0001782865 Moskoff Gregory T false C/O FACTSET RESEARCH SYSTEMS INC. 45 GLOVER AVENUE NORWALK CT 06850 0 1 0 0 MD,Controller and CAO 0 Performance Share Unit 2026-09-23 4 A 0 97 0 A Common Stock 97 97 D PSUs correspond 1-for-1 with Common Stock. Represents Performance Share Units (PSUs) earned by Reporting Person upon achievement of performance goals, as certified by the Compensation and Talent Committee on September 23, 2026. The PSUs are scheduled to vest on November 1, 2026, provided the Reporting Person remains continuously employed by the Issuer on that date. /s/ WINNIFRED LEWIS, Attorney in Fact for Gregory T. Moskoff 2026-09-25