Exhibit 99.1

Schedule of Transactions in Shares

The following table sets forth all transactions effected in the last sixty days by the Reporting Persons (on behalf of the Corvex Funds) in respect of the Shares, inclusive of any transactions effected through 4:00 p.m., New York City time, on May 8, 2026. All such transactions were sales of securities effected in the open market, and the table excludes commissions paid in per share prices.

NATURE OF TRANSACTION	DATE OF TRANSACTION	AMOUNT OF SECURITIES		PRICE PER SHARE $¹
Sale of Common Stock	03/09/2026		38,600		87.38
Sale of Common Stock	03/10/2026		16,173		87.84
Sale of Common Stock	03/11/2026		32,600		87.49
Sale of Common Stock	03/12/2026		17,727		87.48
Sale of Common Stock	03/13/2026		5,402		88.00
Sale of Common Stock	03/16/2026		7,623		88.27
Sale of Common Stock	05/06/2026		700,000		90.34

(1) Other than the sale on May 6, 2026, the prices in each of the following rows are weighted average prices. Other than the sale on May 6, 2026, the Shares were sold in multiple transactions. The Reporting Persons undertake to provide the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Shares sold at each separate price.

Southwest Gas Holdings, Inc. SCHEDULE 13D/A