X0508 4 2025-02-24 0000861884 RELIANCE, INC. RS 0001256541 Lewis Karla R C/O RELIANCE, INC. 16100 N. 71ST STREET, SUITE 400 SCOTTSDALE AZ 85254 1 1 0 0 President, CEO 0 Common Stock 2025-02-24 4 A 0 31136 0 A 116253 D Common Stock 2025-02-24 4 A 0 5113 0 A 121366 D Common Stock 2025-02-24 4 S 0 12114 299.26 D 109252 D Common Stock 2025-02-24 4 S 0 11317 300 D 97935 D Common Stock 2025-02-24 4 S 0 1135 301.44 D 96800 D Common Stock 2025-02-24 4 S 0 810 302.32 D 95990 D Common Stock 2025-02-24 4 S 0 4790 303.65 D 91200 D Common Stock 2025-02-24 4 S 0 970 304.40 D 90230 D Common Stock 7304 I Held by Trustee of Reliance Steel & Aluminum Co. Employee Stock Ownership Plan Common Stock 210 I Held by Trustee of Reliance Steel & Aluminum Co. 401(k) Plan The price reported represents the weighted average sale price of the shares disposed of. The actual sale prices ranged from $298.74 to $299.74. The Reporting Person has provided to the Issuer, and hereby undertakes to provide upon request by the U.S. Securities and Exchange Commission staff or a security holder of the Issuer, full information regarding the number of shares sold at each separate price. The price reported represents the weighted average sale price of the shares disposed of. The actual sale prices ranged from $299.75 to $300.71. The Reporting Person has provided to the Issuer, and hereby undertakes to provide upon request by the U.S. Securities and Exchange Commission staff or a security holder of the Issuer, full information regarding the number of shares sold at each separate price. The price reported represents the weighted average sale price of the shares disposed of. The actual sale prices ranged from $300.96 to $301.77. The Reporting Person has provided to the Issuer, and hereby undertakes to provide upon request by the U.S. Securities and Exchange Commission staff or a security holder of the Issuer, full information regarding the number of shares sold at each separate price. The price reported represents the weighted average sale price of the shares disposed of. The actual sale prices ranged from $302.16 to $303.05. The Reporting Person has provided to the Issuer, and hereby undertakes to provide upon request by the U.S. Securities and Exchange Commission staff or a security holder of the Issuer, full information regarding the number of shares sold at each separate price. The price reported represents the weighted average sale price of the shares disposed of. The actual sale prices ranged from $303.16 to $304.15. The Reporting Person has provided to the Issuer, and hereby undertakes to provide upon request by the U.S. Securities and Exchange Commission staff or a security holder of the Issuer, full information regarding the number of shares sold at each separate price. The price reported represents the weighted average sale price of the shares disposed of. The actual sale prices ranged from $304.23 to $304.72. The Reporting Person has provided to the Issuer, and hereby undertakes to provide upon request by the U.S. Securities and Exchange Commission staff or a security holder of the Issuer, full information regarding the number of shares sold at each separate price. /s/ Karla R. Lewis by William A. Smith II as her Attorney-in-Fact 2025-02-25