X0609 4 2026-05-19 0 0001981599 Centuri Holdings, Inc. CTRI 0001240707 NIELSEN STEVEN E false 19820 NORTH 7TH AVENUE SUITE 120 PHOENIX AZ 85027 1 0 0 0 0 Common Stock 2026-05-19 4 A 0 5290 0 A 5290 D Represents the grant of restricted stock units ("RSUs") pursuant to the Omnibus Incentive Plan of Centuri Holdings, Inc. (the "Issuer") on May 19, 2026 (the "2026 RSU Grant"). Each RSU subject to the 2026 RSU Grant is the economic equivalent of one share of the Issuer's common stock and will be settled by delivery of one share of the Issuer's common stock. /s/ Jason S. Wilcock, as attorney-in-fact for Steven Nielsen 2026-05-20