GRANITE CONSTRUCTION INC

Trading Arrangements

On September 14, 2026, Ms. Woolsey, the Company's Executive Vice President and Chief Financial Officer, adopted a Rule 10b5-1 trading arrangement, as such term is defined in Item 408 of Regulation S-K (“Item 408”). The aggregate number of shares that may be sold under the plan is equal to 50% of the net shares Ms. Woolsey will receive upon vesting of her performance-based LTIP award in March 2027 and 50% of the net shares Ms. Woolsey will receive upon vesting of her time-based restricted stock unit awards that will vest on November 5, 2026, March 13, 2027 and March 14, 2027, including accumulated dividend equivalents. The plan will terminate upon the earlier of May 28, 2027 or the completion of all the sales under the plan.

During the three months ended September 30, 2026, other than Ms. Woolsey, none of the Company’s directors or “officers,” as defined in Rule 16a-1(f) of the Exchange Act, adopted, modified, orterminated a “Rule 10b5-1 trading arrangement” or a “non-Rule 10b5-1 trading arrangement,” as each term is defined in Item 408.