X0306 4 2022-02-07 0 0001408198 MSCI Inc. MSCI 0001797266 Gutowski Robert J. MSCI INC. 7 WORLD TRADE CENTER, 250 GREENWICH ST. NEW YORK NY 10007 0 1 0 0 General Counsel Common Stock 2022-02-07 4 F 0 174 550.45 D 14865 D Common Stock 2022-02-07 4 A 0 3021 0.00 A 17886 D Common Stock 2022-02-07 4 F 0 1543 550.45 D 16343 D Represents shares reacquired by MSCI Inc. to satisfy tax withholding obligations in connection with the vesting and conversion to shares of the third tranche of 339 restricted stock units granted on February 7, 2019. Represents the number of shares of common stock issued following the vesting and conversion of performance stock units ("PSUs") granted to the reporting person on February 7, 2019, upon certification by the Compensation, Talent & Culture Committee on February 7, 2022 of the achievement of the performance metric for the performance period from February 6, 2019 to February 5, 2022. Represents shares reacquired by MSCI Inc. to satisfy tax withholding obligations in connection with the vesting and conversion to shares of 3,021 PSUs granted on February 7, 2019 (includes the performance adjustment as described above). /s/ Cecilia Aza, attorney-in-fact 2022-02-09