X0609 4 2026-08-12 0 0001981599 Centuri Holdings, Inc. CTRI 0001673745 Youngblood Kelly false 19820 NORTH 7TH AVENUE SUITE 120 PHOENIX AZ 85027 0 1 0 0 See Remarks 0 Common Stock 2026-08-12 4 A 0 72864 0 A 72864 D Represents the grant of restricted stock units ("RSUs") pursuant to the Omnibus Incentive Plan of Centuri Holdings, Inc. (the "Issuer") on August 12, 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 may be settled by delivery of one share of the Issuer's common stock. The reporting person's full title is Executive Vice President, Chief Financial Officer. /s/ Kendra Chilton, as attorney-in-fact for Kelly Youngblood 2026-08-12