X0306 4 2015-01-27 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 Head of Port Mgmt Analytics Common Stock 2015-01-27 4 A 0 5980 0 A 38700 D Common Stock 2015-01-27 4 A 0 24746 0 A 63446 D Restricted stock units (RSUs) vesting and converting to shares at a rate of 16.7%, 66.7% and 16.6% on the first, second and third anniversaries of the grant date, respectively. Each RSU represents a contingent right to receive one share of MSCI common stock. Performance stock units (PSUs) representing the minimum payout related to the grant of 27,497 PSUs subject to time- and performance-vesting. The PSUs vest in three equal tranches within a range of 90% to 110% on the last day of each of the performance periods based on the achievement of certain cumulative performance metrics for the three-year period comprised of fiscal years 2015, 2016 and 2017 (first tranche), the four-year period comprised of fiscal years 2015, 2016, 2017 and 2018 (second tranche) and the five-year period comprised of fiscal years 2015, 2016, 2017, 2018 and 2019 (third tranche). The first tranche of PSUs generally converts to shares no earlier than January 1 and no later than March 15, 2018, the second tranche of PSUs generally converts to shares no earlier than January 1 and no later than March 15, 2019 and the third tranche of PSUs generally converts to shares no earlier than January 1 and no later than March 15, 2020. Each PSU represents a contingent right to receive one share of MSCI common stock. /s/ Cecilia Aza, attorney-in-fact 2015-01-29