X0306 4 2021-05-06 0001364742 BlackRock Inc. BLK 0001059245 FINK LAURENCE BLACKROCK, INC. 55 EAST 52ND STREET NEW YORK NY 10055 1 1 Chairman and CEO Shares Of Common Stock (par Value $0.01 Per Share) 2021-05-07 4 S 0 2970 869.8161 D 761769 D Shares Of Common Stock (par Value $0.01 Per Share) 2021-05-06 4 S 0 6450 865.2521 D 755319 D Shares Of Common Stock (par Value $0.01 Per Share) 2021-05-06 4 S 0 23799 866.0031 D 731520 D Shares Of Common Stock (par Value $0.01 Per Share) 2021-05-06 4 S 0 1419 867.0035 D 730101 D Shares Of Common Stock (par Value $0.01 Per Share) 2021-05-06 5 G 0 E 2309 0 D 727792 D Shares Of Common Stock (par Value $0.01 Per Share) 2021-05-06 5 G 0 E 5772 0 D 722020 D This transaction was executed in multiple trades at prices ranging from $869.74 to $869.94. The price reported represents the weighted average sale price of these trades. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer, full information regarding the shares sold at each separate price. Includes Common Stock as well as Restricted Stock Units that vest over a period of 1 to 3 years. Each Restricted Stock Unit is payable solely by delivery of an equal number of shares of Common Stock. This transaction was executed in multiple trades at prices ranging from $864.66 to $865.655. The price reported represents the weighted average sale price of these trades. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer, full information regarding the shares sold at each separate price. This transaction was executed in multiple trades at prices ranging from $865.66 to $866.48. The price reported represents the weighted average sale price of these trades. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer, full information regarding the shares sold at each separate price. This transaction was executed in multiple trades at prices ranging from $866.76 to $867.15. The price reported represents the weighted average sale price of these trades. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer, full information regarding the shares sold at each separate price. /s/ R. Andrew Dickson III as Attorney-in-Fact for Laurence Fink 2021-05-07