X0508 4 2026-03-08 0 0000077543 TUTOR PERINI CORP TPC 0000906134 TUTOR RONALD N C/O TUTOR PERINI CORPORATION 15901 OLDEN STREET SYLMAR CA 91342 1 0 1 1 Executive Chairman 0 Common Stock 2026-03-08 4 M 0 176730 A 176730 D Common Stock 2026-03-08 4 F 0 74560 72.82 D 102170 D Common Stock 2026-03-08 4 D 0 30188 72.82 D 71982 D Common Stock 2026-03-08 4 G 0 71982 0 D 0 D Common Stock 2026-03-08 4 G 0 71982 0 A 4134967 I By Tutor Marital Property Trust Common Stock 711477 I By Ronald N. Tutor Separate Property Trust Common Stock 1533255 I By Ronald N. Tutor 2018 Dynasty Trust Restricted Stock Units 2026-03-08 4 M 0 176730 0 D Common Stock 176730 0 D On March 8, 2023, the reporting person was granted 530,188 RSUs, of which 176,729 vested on each of March 8, 2024 and 2025, and 176,730 vested on March 8, 2026. Of the 176,730 RSUs which vested on March 8, 2026, 30,188 RSUs were settled in cash. The reporting person did not purchase or sell any shares of common stock in the settlement of the cash portion of this award, however, the transaction is required to be reported as an acquisition and disposition back to the Issuer under SEC reporting principles. The restricted stock units (RSUs) convert into common stock of Tutor Perini Corporation (Issuer) on a 1-for-1 basis. /s/ Ifigenia Protopappas, Attorney-in-Fact 2026-03-10