X0306 4 2015-08-11 0000861884 RELIANCE STEEL & ALUMINUM CO RS 0001447652 HOFFMAN JAMES DONALD 350 SOUTH GRAND AVENUE SUITE 5100 LOS ANGELES CA 90071 0 1 0 0 EVP, Operations Common Stock 2015-08-11 4 S 0 328 61.18 D 22764 D Common Stock 731 I Held by Trustee of Reliance Steel & Aluminum Co. Employee Stock Ownership Plan Common Stock 3263 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 $61.14 to $61.18. 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. Includes 1,000 restricted shares subject to vesting over time and 7,600 unvested restricted stock units subject to service criteria. /s/ James D. Hoffman by William A. Smith II as his Attorney-in-Fact 2015-08-12