X0304 4 2012-01-31 0 0001364742 BlackRock Inc. BLK 0001059234 HALLAC CHARLES BLACKROCK, INC. 55 EAST 52ND STREET NEW YORK NY 10055 0 1 0 0 Chief Operating Officer Shares of Common Stock (par value $0.01 per share) 2012-01-31 4 F 0 8048 183.22 D 559265.3828 D Shares of Common Stock (par value $0.01 per share) 36847.3924 I By family trust Shares of Common Stock (par value $0.01 per share) 682.1424 I By family trust Shares of Common Stock (par value $0.01 per share) 58704.392 I By family trust Represents the withholding by BlackRock of Common Stock to satisfy tax obligation on the vesting of the reporting person's Restricted Stock Units and shares of Restricted Stock granted under the Amended and Restated BlackRock, Inc. 1999 Stock Award and Incentive Plan. Includes (i) 3,848 shares of Restricted Stock vesting on 1/31/13, (ii) 11,061 shares of Restricted Stock vesting in installments on 1/31/13 and 1/31/14, (iii) 11,227 shares of Restricted Stock vesting on 1/31/14, (iv) 13,744 Restricted Stock Units vesting in installments on 1/31/13, 1/31/14 and 1/31/15 and (v) 19,660 Restricted Stock Units awarded on 1/20/12 that will vest in whole or in part only on the satisfaction of one or more previously-disclosed Common Stock price targets, but which may not vest before 1/31/16 and will expire on 1/31/18 to the extent not then vested. Each Restricted Stock Unit is payable solely by delivery of an equal number of shares of Common Stock. /s/ Daniel R. Waltcher as Attorney-in-Fact for Charles Hallac 2012-02-02