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STERLING INFRASTRUCTURE, INC.

For the period ended Dec 31, 2025. Filed Feb 26, 2026.

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A company's yearly report to the SEC, with audited financial statements. It is the fullest account a company gives of its business, its finances and the risks it sees.

FY2025 · Filed Feb 26, 2026

STRL$290.67+15.0%Stored close · as of Nov 9, 2026

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Item 9B. Other Information

On November 6, 2025, Dana C. O'Brien, adirector of the Company, entered into a “Rule 10b5-1 trading arrangement”, as defined in Item 408(a) of Regulation S-K, for the sale offour thousand shares of common stock. The trading arrangement begins February 5, 2026 and terminates upon the sale of all shares or November 6, 2026, whichever occurs first.

On November 21, 2025, Dwayne A. Wilson, adirector of the Company, entered into a “Rule 10b5-1 trading arrangement”, as defined in Item 408(a) of Regulation S-K, for the sale oftwo thousand nine hundred fifty-five shares of common stock. The trading arrangement begins March 5, 2026 and terminates upon the sale of all shares or December 31, 2026, whichever occurs first.

On December 2, 2025, Julie A. Dill, adirector of the Company, entered into a “Rule 10b5-1 trading arrangement”, as defined in Item 408(a) of Regulation S-K, for the sale offour thousand five hundred shares of common stock. The trading arrangement begins March 9, 2026 and terminates upon the sale of all shares or December 31, 2026, whichever occurs first.

On December 8, 2025, Joseph A. Cutillo, the Company’s Chief Executive Officer and a director, entered into a “Rule 10b5-1 trading arrangement as defined in Item 408(a) of Regulation S-K, for the sale oftwo hundred thousand shares of common stock. The trading arrangement begins March 9, 2026 and terminates upon the sale of all shares or October 1, 2026, whichever occurs first.

During the quarter ended December 31, 2025, no other director or officer (as defined in Rule 16a-1(f) of the Securities Exchange Act of 1934) of the Company adopted or terminated a “Rule 10b5-1 trading arrangement” or “non-Rule 10b5-1 trading arrangement,” as each term is defined in Item 408(a) of Regulation S-K.

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