TUTOR PERINI CORP

Section 1503 of the Dodd-Frank Wall Street Reform and Consumer Protection Act requires domestic mine operators to disclose violations and orders issued under the Federal Mine Safety and Health Act of 1977 (the “Mine Act”) by the federal Mine Safety and Health Administration. We do not own or operate any mines; however, we may be considered a mine operator as defined under the Mine Act because we provide construction services to customers in the mining industry. For the quarter ended June 30, 2026, we do not have any mine safety violations or other regulatory matters to disclose pursuant to Section 1503(a) of the Dodd-Frank Act and Item 104 of Regulation S-K.