X0306 4 2012-12-15 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 Head Portfolio Mgmt Analytics Common Stock 2012-12-15 4 F 0 1659 30.16 D 21021 D Represents shares reacquired by MSCI to satisfy tax withholding obligations in connection with the vesting and conversion to shares of 4,599 restricted stock units granted to the Reporting Person on August 22, 2011. /s/ Cecilia Aza, attorney-in-fact 2012-12-18