GRANITE CONSTRUCTION INC

Trading Arrangements

During the three months ended December 31, 2025, the following 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 of Regulation S-K (“Item 408”).

On December 3, 2025, Mr. Larkin, the Company’s President and Chief Executive Officer, adopted a Rule 10b5-1 trading arrangement, as such term is defined in Item 408. The aggregate number of shares which may be sold under the plan is equal to 100% of the net shares Mr. Larkin will receive upon vesting of his performance-based LTIP award that will be paid out in March 2026 and 100% of the net shares Mr. Larkin will receive upon vesting of his time-based restricted stock unit awards that will vest on March 14, 2026, including dividend equivalents. The plan will terminate upon the earlier of July 31, 2026 or the completion of all the sales under the plan.

On December 4, 2025, Mr. Dowd, the Company’s Senior Vice President, Construction, adopted a Rule 10b5-1 trading arrangement, as such term is defined in Item 408. The aggregate number of shares which may be sold under the plan is 6,075. The plan will terminate upon the earlier of December 31, 2026 or the completion of all the sales under the plan.

On December 10, 2025, 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. The aggregate number of shares which 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, 50% of the net shares Ms. Woolsey will receive upon vesting of her time-based restricted stock unit awards that will vest on March 14, 2026, including dividend equivalents and 2,394 shares. The plan will terminate upon the earlier of May 1, 2026 or the completion of all the sales under the plan.