X0508 4 2025-02-17 0001981599 Centuri Holdings, Inc. CTRI 0002045397 Chilton Kendra 19820 NORTH 7TH AVENUE SUITE 120 PHOENIX AZ 85027 0 1 0 0 SVP, Chief Accounting Officer 0 Restricted Stock Units 2025-02-17 4 A 0 7242 0 A Common Stock 7242 12292 D Represents a grant of restricted stock units ("RSUs") pursuant to the Issuer's Omnibus Incentive Plan. Each RSU is the economic equivalent of one share of the Issuer's common stock and may be settled by delivery of an equal number of shares of the Issuer's common stock or, in certain circumstances, may be settled in cash. The RSUs will vest on the second anniversary of the date of grant. /s/ Jason S. Wilcock, attorney-in-fact for Kendra Chilton 2025-02-19