Item 7.01 Regulation FD Disclosure. On June 17, 2025, Sterling Infrastructure, Inc. (the “ Company”) issued a press release announcing the execution on June 16, 2025 of an Asset Purchase Agreement (the “ Purchase Agreement”) by the Company and CEC Facilities, LLC, a Delaware limited liability company and wholly-owned subsidiary of the Company (“ Purchaser”), CEC Facilities Group, LLC, a Texas limited liability company (the “ Seller”), MCEC, LLC, a Texas limited liability company and wholly-owned subsidiary of the Seller (“ MCEC” and together with the Seller, the “ Sellers” or the “ Seller Parties”), CEC Electrical, Inc., a Texas corporation, in its capacity as a member of Seller (“ CEC Electrical”), Brad Smith, an individual resident of the state of Texas, and Daniel Williams, an individual resident of the state of Texas, each in his capacity as a member of Seller (collectively and together with CEC Electrical, the “ Members”), and Ray Waddell, an individual resident of the state of Texas (the “ Beneficial Owner” and together with the Seller Parties and the Members, the “ Seller Group Members”). Subject to the terms and conditions of the Purchase Agreement, Purchaser will acquire substantially all of the assets and will assume certain liabilities of the Seller Parties (the “ Acquisition”). Additionally, the Company is also furnishing presentation materials regarding the Acquisition that will be used, in whole or in part, at a presentation to investors on June 17, 2025. The information required by Item 1.01, including a copy of the Purchase Agreement, will be filed in a separate Current Report on Form8-Kby no later than close of business on June 23, 2025. Copies of the press release and investor presentation are being furnished with this Report as Exhibits 99.1 and 99.2, respectively, and are incorporated herein by reference. The information furnished in this Item 7.01 shall not be deemed to be “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “ Exchange Act”), or otherwise subject to the liabilities of that section, unless the Company specifically states that the information is to be considered “filed” under the Exchange Act, nor shall it be incorporated by reference in any filing made by the Company pursuant to the Exchange Act or the Securities Act other than to the extent that such filing incorporates by reference any or all of such information by express reference thereto.

Item 9.01 Financial Statements and Exhibits.