X0303 4 2010-08-02 0001408198 MSCI Inc. MSCI 0001120741 OBSTLER DAVID M 88 PINE STREET NEW YORK NY 10005 0 1 0 0 Chief Financial Officer Class A Common Stock 2010-08-02 4 M 0 25000 6.62 A 39520 D Class A Common Stock 2010-08-02 4 S 0 25000 33.19 D 14520 D Option to purchase Class A Common Stock 6.62 2010-08-02 4 M 0 25000 0 D 2009-01-28 2015-01-28 Class A Common Stock 25000 207563 D Includes 14,520 shares of restricted stock vesting over a four-year period, with 25% vesting on 12/31/210 and 25% vesting on each of the following three anniversaries thereof. This transaction was executed in multiple trades at prices ranging from $33.08 to $33.26. The price reported reflects the weighted average purchase price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or security holder of the issuer full information regarding the number of shares and prices at which each transaction was effected. /s/ Cecilia Aza, Attorney-in-Fact 2010-08-04