ORLY: Financial results

Item 2.02 – Results of Operations and Financial Condition ​ On October 28, 2026, O’Reilly Automotive Inc. (the “Company”) issued a press release announcing its third quarter 2026 earnings. The text of the press release is attached hereto as Exhibit 99.1. ​ Section 9 – Financial Statements and Exhibits ​ Item 9.01 – Financial Statements and Exhibits ​ Exhibit Number ​ ​ Description 99.1 ​ Press release dated October 28, 2026 104 ​ Cover Page Interactive Data File – the cover page XBRL tags are embedded within the Inline XBRL document ​ The information in this Current Report on Form 8-K shall not be deemed “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended. ​ ​ ​ SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. ​ ​ ​ ​ Date: October 28, 2026 O’REILLY AUTOMOTIVE, INC. ​ ​ ​ ​ By: /s/ Jeremy A. Fletcher ​ ​ Jeremy A. Fletcher ​ ​ Executive Vice President and Chief Financial Officer ​ ​ (principal financial and accounting officer) ​