(b) On April 23, 2019, LeRoy C. Hanneman, Jr. tendered his resignation from the Board of Directors (the “Board”) of Southwest Gas Holdings, Inc. (the “Company”), and all related Board committees, to be effective immediately prior to the Company’s 2019 Annual Meeting of Shareholders taking place on May 2, 2019. Mr. Hanneman has attained retirement age as specified in the Company’s Corporate Governance Guidelines. In connection with Mr. Hanneman’s resignation, the Board has determined to fix the number of authorized directors at 11, effective immediately prior to the Company’s 2019 Annual Meeting of Shareholders. The Company is grateful for Mr. Hanneman’s service as a member of the Board and thanks him for his sound counsel in contributing to the Company’s success. Mr. Hanneman’s decision to resign did not involve any disagreement on any matter relating to the Company’s operations, policies or practices.

About SOUTHWEST GAS HOLDINGS, INC. (NYSE:SWX)

Southwest Gas Holdings, Inc., formerly Southwest Gas Corporation, is engaged in the business of purchasing, distributing and transporting natural gas. The Company operates through two segments: natural gas operations and construction services, which includes the operations of the Company’s subsidiary, Centuri Construction Group, Inc. (Centuri). The Company operates two pipeline transmission systems, such as a system, which includes a liquefied natural gas (LNG) storage facility owned by Paiute extending from the Idaho-Nevada border to the Reno, Sparks, and Carson City areas and communities in the Lake Tahoe area in both California and Nevada and other communities in northern and western Nevada, and a system extending from the Colorado River at the southern tip of Nevada to the Las Vegas distribution area.