X0306 4 2023-02-28 0 0001408198 MSCI Inc. MSCI 0001205054 Kinney Catherine R MSCI INC. 7 WORLD TRADE CENTER, 250 GREENWICH ST. NEW YORK NY 10007 1 0 0 0 Common Stock 2023-02-28 4 A 0 54 0.00 A 12722 D Common Stock 6592 I By Catherine R. Kinney 2021 GRAT No. 2 Common Stock 3966 I By Catherine R. Kinney 2022 GRAT Common Stock 572 I By Daughter Common Stock 572 I By Son Shares acquired by the Reporting Person in connection with MSCI Inc.'s payment of a dividend. Pursuant to the MSCI Inc. Non-Employee Directors Deferral Plan, the Reporting Person has elected to defer receipt of the shares until the 60th day after such Reporting Person's "separation from service" as a director. /s/ Cecilia Aza, attorney-in-fact 2023-03-02