X0508 4 2025-04-30 0001981599 Centuri Holdings, Inc. CTRI 0001446274 Haller Karen S 19820 NORTH 7TH AVENUE SUITE 120 PHOENIX AZ 85027 1 0 0 0 0 Common Stock 2025-04-30 4 M 0 6904 A 18904 D Restricted Stock Units 2025-04-30 4 M 0 6904 0 D Common Stock 6904 7338 D Each restricted stock unit ("RSU") is the economic equivalent of one share of the Issuer's common stock. Pursuant to the applicable RSU award agreement by and between the Issuer and the Reporting Person, shares of the Issuer's common stock were delivered on a one-for-one basis upon the settlement of the RSUs. On April 30, 2024, the Reporting Person was granted 6,904 RSUs which vested in full on April 30, 2025. /s/ Jason S. Wilcock, as attorney-in-fact for Karen S. Haller 2025-05-02