Earnings Conference Call Full Year 2023 Results February 28, 2024 Safe Harbor Statement Forward-LookingStatements Unless context otherwise requires, in this presentation, references to “we”, “us” and “our” are to Southwest Gas Holdings, Inc. (NYSE: SWX) (“Southwest Gas” or the “Company” or “SWX”) together with its current and former consolidated subsidiaries, which include, among others, Southwest Gas Corporation ("Southwest", “SWG”, “Utility” or “Natural Gas Distribution” segment), MountainWest Pipelines H ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal period ended December 31, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission Exact name of registrant as specified in its charter and State of I.R.S. File Number principal office address and telephone number Incorporation Employer Identification No. 001-37976 Southwest ...

For Immediate Release February 28, 2024 Southwest Gas Holdings, Inc. Reports Fourth Quarter and Full-Year 2023 Financial Results Improved Utility ROE, Strong Centuri Revenue, Net Income, and Adjusted EBITDA Previously Announced Plan to Separate Centuri Remains On Track Initiated 2024 Utility Earnings and Capital Expenditures Guidance and 2024-2026 Utility Adjusted Net Income CAGR and Rate Base CAGR Guidance LAS VEGAS – February 28, 2024 – Southwest Gas Holdings, Inc. (NYSE: SWX) (“Southwest Gas” or “Company ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission Exact name of registrant as specified in its charter and State of I.R.S. File Number principal office address and telephone number Incorporat ion Employer Identif ication No. 001-37976 ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission Exact name of registrant as specified in its charter and State of I.R.S. File Number principal office address and telephone number Incorporat ion Employer Identif ication No. 001-37976 South ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission Exact name of registrant as specified in its charter and State of I.R.S. File Number principal office address and telephone number Incorporat ion Employer Identif ication No. 001-37976 Sout ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal period ended December 31, 2022 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission Exact name of registrant as specified in its charter and State of I.R.S. File Number principal office address and telephone number Incorporation Employer Identification No. 001-37976 Southwest ...