X0304 4 2012-01-31 0 0001364742 BlackRock Inc. BLK 0001059242 GOLUB BENNETT BLACKROCK, INC. 55 EAST 52ND STREET NEW YORK NY 10055 0 1 0 0 Chief Risk Officer Shares of Common Stock (par value $0.01 per share) 2012-01-31 4 F 0 3427 183.22 D 235447.3784 D Shares of Common Stock (par value $0.01 per share) 56223.1977 I Trust for benefit of family 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 586.5889 shares of Common Stock acquired by the reporting person under the BlackRock, Inc. Employee Stock Purchase Plan. Also includes 1,307.7895 shares of Common Stock held in the BlackRock, Inc. Retirement Savings Plan. Includes (i) 1,416 shares of Restricted Stock vesting on 1/31/13, (ii) 3,950 shares of Restricted Stock vesting in equal installments on 1/31/13 and 1/31/14, (iii) 5,613 shares of Restricted Stock vesting on 1/31/14, (iv) 4,762 Restricted Stock Units vesting in installments on 1/31/13, 1/31/14 and 1/31/15 and (v) 9,830 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 Bennett Golub 2012-02-02