144 0001752592 XXXXXXXX LIVE 0001013237 FACTSET RESEARCH SYSTEMS INC 001-11869 45 GLOVER AVENUE NORWALK CT 06850 2038101000 Robie Robert J. Officer EVP, Head of Trading & Analytics Common Stock Georgeson Securities Corp

144 Fernwood Avenue Edison NJ 08837

3000 1304460.00 38146230 09/27/2023 NYSE Common Stock 09/27/2023 Stock Option Exercise Factset Research Systems Inc. N 3000 09/27/2023 Cash Y Under securities to be sold, the date of acquisition and date of payment are various dates. 09/27/2023 Conformed Signature on File