X0306 4 2019-02-07 0 0001408198 MSCI Inc. MSCI 0001416752 Pettit CD Baer MSCI INC. 7 WORLD TRADE CENTER, 250 GREENWICH ST NEW YORK NY 10007 0 1 0 0 President Common Stock 2019-02-07 4 A 0 3489 0.00 A 178321 D Common Stock 2019-02-07 4 F 0 674 172.45 D 177647 D Restricted stock units ("RSUs") ratably vesting and converting to shares on the first, second and third anniversaries of the grant date. Each RSU represents a contingent right to receive one share of MSCI common stock. Represents shares reacquired by MSCI Inc. to satisfy tax withholding obligations in connection with the vesting and conversion to shares of the second tranche of 1,432 RSUs granted on February 7, 2017. /s/ Cecilia Aza, attorney-in-fact 2019-02-11