On May 8, 2017, Southwest Gas Holdings, Inc. released summary financial information to the general public, including the investment community, regarding operating performance for the quarter and twelve months ended March 31, 2017. A copy of the associated press release and summary financial information is attached hereto as Exhibit 99.

This Form 8-K and the attached exhibit are provided under Item 2.02 of Form 8-K and are furnished to, but not filed with, the Securities and Exchange Commission.

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.

SOUTHWEST GAS HOLDINGS, INC. (NYSE:SWX) Recent Trading Information

SOUTHWEST GAS HOLDINGS, INC. (NYSE:SWX) closed its last trading session down -0.89 at 83.22 with 186,379 shares trading hands.