Item 8.01 Other Events. On November 12, 2025, Sterling Infrastructure, Inc. (the "Company") issued a press release announcing that the Board of Directors (the "Board") of the Company authorized a stock repurchase program, effective today, to purchase $400 million of the Company’s outstanding common stock over the next 24 months. This stock repurchase program replaces the Company’s current stock repurchase program adopted by the Board in December 2023, which was set to expire on December 5, 2025. The press releas...

Item 9.01 Financial Statements and Exhibits. (d) Exhibits Exhibit Number Description 99.1 Press release, dated November 12, 2025 104 Cover Page Interactive Data File (embedded within the Inline XBRL document) SIGNATURES 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 hereunto duly authorized. STERLING INFRASTRUCTURE, INC. Date: November 12, 2025 By: /s/ Nicholas Grindstaff Nicholas Grindstaff Chief Financial Officer