Centuri Holdings, Inc. on March 21, 2024, Julie A. Dill, Andrew W. Evans, Christopher A. Krummel, Anne L. Mariucci and Charles R. Patton were appointed as directors of the Company?s board of directors, effective as of 4:00 p.m. New York City time on April 17, 2024, the effective date of the Registration Statement. William J. Fehrman, the Company?s President and Chief Executive Officer, and Karen S. Haller, President and Chief Executive Officer of Southwest Gas, had previously served as directors of the Company while it was a wholly owned subsidiary of Southwest Gas and will continue to serve as directors of the Company. The Board has established the following committees of the Board: the Audit Committee, the Compensation Committee and the Nominating and Corporate Governance Committee.

The members of the Audit Committee as of the date of the closing of the IPO are Ms. Dill and Messrs. Patton, Krummel and Evans, and Ms. Dill serves as Chair of the Audit Committee. The members of the Compensation Committee as of the date of the closing of the IPO are Mses.

Haller and Mariucci and Messrs. Evans and Patton, and Mr. Evans serves as Chair of the Compensation Committee. The members of the Nominating and Corporate Governance Committee as of the date of the closing of the IPO are Mses.

Dill and Mariucci and Mr. Krummel, and Ms. Mariucci serves as Chair of the Nominating and Corporate Governance Committee.