X0206 3 2016-03-01 0 0001364742 BlackRock Inc. BLK 0001668100 Comerchero Marc D. 55 EAST 52ND STREET NEW YORK NY 10055 1 Principal Accounting Officer Common Stock 3786 D Includes (i) 729 restricted stock units awarded on 1/17/14 and vesting on 1/31/17, (ii) 639 restricted stock units awarded on 1/16/15 and vesting on 1/31/18, (iii) 190 restricted stock units awarded on 1/16/15 and vesting in equal installments on 1/31/17 and 1/31/18, (iv) 337 restricted stock units awarded on 1/19/16 and vesting in equal installments on 1/31/17, 1/31/18 and 1/31/19 and (v) 844 restricted stock units awarded on 1/19/16 and vesting on 1/31/19. /s/ Daniel R. Waltcher as Attorney-in-Fact for Marc Comerchero 2016-03-09