X0508 4 2024-05-12 0001981599 Centuri Holdings, Inc. CTRI 0002016642 Wilcock Jason S. 19820 NORTH 7TH AVENUE SUITE 120 PHOENIX AZ 85027 0 1 0 0 See Remarks 0 Restricted Stock Units 2024-05-12 4 A 0 30303.03 0 A Common Stock 30303.03 30303.03 D Represents the 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 cases as set forth in the applicable RSU award agreement by and between the Issuer and the Reporting Person, may be settled in cash. The RSUs will vest on the first anniversary of the date of grant. The Reporting Person's full title is "Chief Legal and Administrative Officer" /s/ Jason S. Wilcock 2024-05-13