X0306 4 2018-01-27 0 0001408198 MSCI Inc. MSCI 0001560708 Zangari Peter J. MSCI INC. 7 WORLD TRADE CENTER, 250 GREENWICH ST. NEW YORK NY 10007 0 1 0 0 Global Head of Research Common Stock 2018-01-27 4 F 0 366 140.57 D 67717 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 992 restricted stock units granted on January 27, 2015. /s/ Cecilia Aza, attorney-in-fact 2018-01-30