Current Report · Items 5.02 · 8-K

Sterling Infrastructure, Inc.

STRLNASDAQEQUITYCurrent

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements

Filed Jul 10, 2026Accepted Jul 10, 2026, 4:02 PM EDTCIK 874238Accession 0000874238-26-000095

Company context

Sterling operates through a variety of subsidiaries within three segments specializing in E-Infrastructure, Transportation and Building Solutions in the United States, primarily across the Southern, Northeastern, Mid-Atlantic and Rocky Mountain regions and the Pacific Islands. E-Infrastructure Solutions provides advanced, large-scale site development services for manufacturing, data centers, distribution centers, warehousing, power generation and more. Transportation Solutions includes infrastructure and rehabilitation projects for highways, roads, bridges, airports, ports, rail and storm drainage systems. Building Solutions includes residential and commercial concrete foundations for single-family and multi-family homes, parking structures, elevated slabs, other concrete work, plumbing services, and surveys for new single-family residential builds. From strategy to operations, we are committed to sustainability by operating responsibly to safeguard and improve society’s quality of life. Caring for our people and our communities, our customers and our investors - that is The Sterling Way.

Current securities

STRLNASDAQ · EQUITY · Current

Recent company filings

Disclosure sections

Items 5.02

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Item 5.02Item 5.02 - Departure/Election of Directors

Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers. On July 6, 2026, Mark D. Wolf, General Counsel, Chief Compliance Officer and Corporate Secretary of Sterling Infrastructure, Inc. (the “Company”), notified the Company of his intention to retire later this year. Mr. Wolf is expected to continue in his current role and assist in the transition. 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: July 10, 2026 By: /s/ Nicholas Grindstaff Nicholas Grindstaff Chief Financial Officer

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