EXHIBIT 10.15

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FIRST AMENDMENT

TO

THE RELIANCE STEEL & ALUMINUM CO.
DEFERRED COMPENSATION PLAN

 (Amended and Restated Effective January 1, 2013)

THIS FIRST AMENDMENT (the “Amendment”) to the Reliance Steel & Aluminum Co. Deferred Compensation Plan, as amended from time to time (the “Plan”) is made as of December 22, 2020.

WHEREAS, Reliance Steel & Aluminum Co. (the “Company”) maintains the Plan to provide a select group of management or highly compensated employees the opportunity to defer receipt of compensation;

WHEREAS, for purposes of this Amendment, capitalized terms used herein that are not defined shall have the meanings given to them in the Plan;

WHEREAS, pursuant to Section 11.2 of the Plan, the Committee or the Company is authorized to amend or modify the Plan from time to time; and

WHEREAS, the Committee desires to amend the Plan as set forth herein;

NOW, THEREFORE, the Plan is hereby amended as follows:

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IN WITNESS WHEREOF, the Company has caused this Amendment to be executed by its duly authorized officer as of the date first set forth above.

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Reliance Steel & Aluminum Co.

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By: /s/ Karla R. Lewis
Name:Karla R. Lewis
Title:Senior Executive Vice President & Chief Financial

Officer