X0508 4 2024-08-29 0001364742 BlackRock Inc. BLK 0001059240 Kushel J. Richard BLACKROCK, INC. 50 HUDSON YARDS NEW YORK NY 10001 1 Senior Managing Director 0 Shares Of Common Stock (par Value $0.01 Per Share) 2024-08-29 4 M 0 14000 513.50 A 81107.34 D Shares Of Common Stock (par Value $0.01 Per Share) 2024-08-29 4 S 0 96 885.385 D 81011.34 D Shares Of Common Stock (par Value $0.01 Per Share) 2024-08-29 4 S 0 258 886.6348 D 80753.34 D Shares Of Common Stock (par Value $0.01 Per Share) 2024-08-29 4 S 0 390 888.0413 D 80363.34 D Shares Of Common Stock (par Value $0.01 Per Share) 2024-08-29 4 S 0 12226 888.8866 D 68137.34 D Shares Of Common Stock (par Value $0.01 Per Share) 2024-08-29 4 S 0 443 890.2167 D 67694.34 D Shares Of Common Stock (par Value $0.01 Per Share) 2024-08-29 4 S 0 587 890.8619 D 67107.34 D Shares Of Common Stock (par Value $0.01 Per Share) 26153 I By Family Trust Shares Of Common Stock (par Value $0.01 Per Share) 1000 I By Family Trust Shares Of Common Stock (par Value $0.01 Per Share) 1000 I By Family Trust Shares Of Common Stock (par Value $0.01 Per Share) 45000 I By The Kushel Family 2011 Dynasty Trust Shares Of Common Stock (par Value $0.01 Per Share) 4150 I By The Kushel Family 2018 Trust Employee Stock Option (Right to Buy) 513.50 2024-08-29 4 M 0 14000 0 D 2026-12-04 Common Stock 14000 67142 D Includes Common Stock as well as Restricted Stock Units that will 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 $885.15 to $885.63. 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 $886.32 to $886.96. 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 $887.63 to $888.60. 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 $888.66 to $889.30. 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 $889.67 to $890.66. 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 $890.69 to $891.32. 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. These options shall vest in equal installments on December 4, 2022, December 4, 2023 and December 4, 2024. /s/ R. Andrew Dickson III as Attorney-in-Fact for J. Richard Kushel 2024-08-30