X0303 4 2008-09-26 0000888165 INTERACTIVE DATA CORP/MA/ IDC 0001239373 CLARK STUART J C/O INTERACTIVE DATA CORPORATION 32 CROSBY DRIVE BEDFORD MA 01730 1 1 0 0 President and CEO Common Stock 2008-09-26 4 A 0 306 0 A 211911 D Represents Restricted Stock Unit awards which will be settled solely in shares of common stock and therefore the reporting person is reporting these units as shares of common stock on Table I. These RSUs were granted in connection with the issuer's payment of a $0.15 cash dividend on September 26, 2008 pursuant to the Dividend Equivalent Rights provisions of the RSUs previously granted to the reporting person. Includes an aggregate of 52,254 Restricted Stock Units all of which will be settled solely in shares of common stock. Includes 245 shares acquired under the Company's Employee Stock Purchase Plan on August 15, 2008. Stuart J. Clark 2008-09-30