X0306 4 2017-01-27 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 Chief Operating Officer Common Stock 2017-01-27 4 F 0 3039 82.76 D 191217 D Common Stock 2017-01-28 4 F 0 1703 82.76 D 189514 D Represents shares reacquired by MSCI Inc. to satisfy tax withholding obligations in connection with the vesting and conversion to shares of 6,465 restricted stock units granted to the Reporting Person on January 27, 2015. Represents shares reacquired by MSCI Inc. to satisfy tax withholding obligations in connection with the vesting and conversion to shares of 3,623 restricted stock units granted to the Reporting Person on January 28, 2014. /s/ Cecilia Aza, attorney-in-fact 2017-01-31