ORLY: Other company developments

Item 8.01 – Other Events ​ On June 1, 2026, the Board of Directors (the “Board”) of O’Reilly Automotive, Inc. (the “Company”) approved a resolution to increase the authorization amount under its share repurchase program by an additional $2.0 billion, raising the aggregate authorization under the program to $31.75 billion. The additional $2.0 billion authorization is effective for a three-year period, beginning on June 1, 2026. Stock repurchases under the program may be made from time to time, as the Company deems appropriate, solely through open market repurchases effected through a broker dealer at prevailing market prices, based on a variety of factors such as price, corporate requirements, and overall market conditions. There can be no assurance as to the number of shares the Company will purchase, if any. The share repurchase program may be increased or otherwise modified, renewed, suspended, or terminated by the Company at any time, without prior notice. ​ ​ ​ ​ ​ ​ 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: June 1, 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) ​ ​ ​ ​ ​ ​ ​