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

390 Madison Avenue 6th Floor New York NY 10017

200000 12776000 52743248 09/17/2025 NYSE Common 03/23/2015 Transfer Ronald N. Tutor Separate Property Trust, who acquired the shares on 9/2/2008 N 200000 03/23/2015 Transfer N Tutor Marital Property Trust

Care of Tutor Perini Corporation 15901 Olden Street Sylmar CA 91342

Common 09/03/2025 44312 2620195.15 Tutor Marital Property Trust

Care of Tutor Perini Corporation 15901 Olden Street Sylmar CA 91342

Common 08/28/2025 80660 4835760.58 Tutor Marital Property Trust

Care of Tutor Perini Corporation 15901 Olden Street Sylmar CA 91342

Common 08/26/2025 106832 6309700.9 Tutor Marital Property Trust

Care of Tutor Perini Corporation 15901 Olden Street Sylmar CA 91342

Common 08/25/2025 20000 1183576 Tutor Marital Property Trust

Care of Tutor Perini Corporation 15901 Olden Street Sylmar CA 91342

Common 08/25/2025 68196 4036316.65 Tutor Marital Property Trust

Care of Tutor Perini Corporation 15901 Olden Street Sylmar CA 91342

Common 08/22/2025 80000 4692336 The shares represented on this filing are to be sold by the Tutor Marital Property Trust , Ronald Tutor as trustee 09/17/2025 /s/ J.P. Morgan Securities LLC as agent and attorney-in-fact for Ronald Tutor