X0306 4 2017-02-10 0 0001408198 MSCI Inc. MSCI 0001626744 Seyer Laurent MSCI INC. 7 WORLD TRADE CENTER, 250 GREENWICH ST. NEW YORK NY 10007 0 1 0 0 Chief Client Officer Common Stock 2017-02-10 4 F 0 638 91.22 D 9064 D Represents shares reacquired by MSCI Inc. to satisfy tax withholding obligations in connection with the vesting and conversion to shares of 1,357 restricted stock units granted to the Reporting Person on February 10, 2016. /s/ Cecilia Aza, attorney-in-fact 2017-02-14