RELIANCE, INC. 10-Q

Item 5. Other Information ​ During the second quarter ended June 30, 2023, none of the Company’s directors or officers (as defined in Rule 16a-1(f) of the Securities Exchange Act of 1934) adopted , terminated or modified a Rule 10b5-1 trading arrangement or non-Rule 10b5-1 trading arrangement (as such terms are defined in Item 408(a) of Regulation S-K). ​ Item 6. Exhibits ​ ​ Exhibit Number ​ Description 31.1* ​ Certification of Chief Executive Officer pursuant to Rule 13a-14(a) and Rule 15d-14(a) of the Securities Exchange Act of 1934, as amended. 31.2* ​ Certification of Chief Financial Officer pursuant to Rule 13a-14(a) and Rule 15d-14(a) of the Securities Exchange Act of 1934, as amended. 32** ​ Certification Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. 101* ​ The following unaudited financial information from Reliance Steel & Aluminum Co.’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2023 formatted in iXBRL (Inline eXtensible Business Reporting Language) includes: (i) the Consolidated Balance Sheets, (ii) the Consolidated Statements of Income and Comprehensive Income, (iii) the Consolidated Statements of Equity, (iv) the Consolidated Statements of Cash Flows, and (v) related notes to these consolidated financial statements. 104* ​ Cover Page Interactive Data File (formatting as Inline XBRL and contained in Exhibit 101). ​ ​ ​ * Filed herewith. ** Furnished herewith. ​ 23 Table of Contents ​ SIGNATURE ​ Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized. ​ ​ ​ ​ ​ ​ RELIANCE STEEL & ALUMINUM CO. ​ (Registrant) ​ ​ ​ ​ ​ ​ Date: August 3, 2023 By: /s/ Arthur Ajemyan ​ ​ ​ Arthur Ajemyan ​ ​ Senior Vice President and Chief Financial Officer ​ ​ (Duly Authorized Officer, Principal Financial Officer and Principal Accounting Officer) ​ ​ ​ ​ ​ ​ 24