144 0000906134 XXXXXXXX LIVE 0000077543 Tutor Perini Corporation 001-06314 Tutor Perini Corporation 15901 Olden Street Sylmar CA 91342 818-362-8391 Ronald N. Tutor Executive Chairman Common Stock J.P. Morgan Securities LLC

390 Madison Avenue, 6th Floor New York NY 10017

300000 17529000 52743248 08/25/2025 NYSE Common Stock 03/23/2015 Transfer Ronald N. Tutor Separate Property Trust, who acquired the shares on 09/08/2008 N 300000 03/23/2015 Transfer N Tutor Marital Property Trust

C/o Tutor Perini Corporation 15901 Olden Street Sylmar CA 91342

Common Stock 06/11/2025 130478 5341260.46 Tutor Marital Property Trust

C/o Tutor Perini Corporation 15901 Olden Street Sylmar CA 91342

Common Stock 06/10/2025 29522 1196047.4 Tutor Marital Property Trust

C/o Tutor Perini Corporation 15901 Olden Street Sylmar CA 91342

Common Stock 06/03/2025 100000 3862100 Ronald N. Tutor Separate Property Trust

C/o Tutor Perini Corporation 15901 Olden Street Sylmar CA 91342

Common Stock 08/25/2025 20000 1183576 Ronald N. Tutor Separate Property Trust

C/o Tutor Perini Corporation 15901 Olden Street Sylmar CA 91342

Common Stock 08/22/2025 80000 4692336 Ronald N. Tutor Separate Property Trust

C/o Tutor Perini Corporation 15901 Olden Street Sylmar CA 91342

Common Stock 06/02/2025 50000 1872665 The shares filed today will be sold by the Tutor Marital Property Trust, Ronald N. Tutor as trustee. 08/25/2025 /s/ J.P. Morgan Securities LLC as agent and attorney-in-fact for Ronald N. Tutor