Southwest Gas S-3ASR Automatic shelf registration

As filed with the Securities and Exchange Commission on November 28, 2023

Registration No. 333-                

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM S-3

REGISTRATION STATEMENT

UNDER

THE SECURITIES ACT OF 1933

Southwest Gas Holdings, Inc.

(Exact Name of Registrant as Specified in Its Charter)

Delaware	81-3881866
(State or Other Jurisdiction of Incorporation or Organization)	(I.R.S. Employer Identification No.)

Southwest Gas Corporation

(Exact Name of Registrant as Specified in Its Charter)

California	88-0085720
(State or Other Jurisdiction of Incorporation or Organization)	(I.R.S. Employer Identification No.)

8360 S. Durango Drive

P.O. Box 98510

Las Vegas, Nevada 89193-8510

(702) 876-7237

(Address, including zip code, and telephone number, including area code, of registrant’s principal executive offices)

Robert J. Stefani

Senior Vice President, Chief Financial Officer

Southwest Gas Holdings, Inc.

8360 S. Durango Drive

P.O. Box 98510

Las Vegas, Nevada 89193-8510

(702) 876-7237

(Name, address, including zip code, and telephone number, including area code, of agent for service)

Copies to:

Brandon C. Parris, Esq.

R. John Hensley, Esq.

Morrison & Foerster LLP

425 Market Street

San Francisco, California 94105

(415) 268-7500

Approximate date of commencement of proposed sale to the public: From time to time after the effective date of this registration statement.

If the only securities being registered on this form are being offered pursuant to dividend or interest reinvestment plans, please check the following box.  ☐

If any of the securities being registered on this form are to be offered on a delayed or continuous basis pursuant to Rule 415 under the Securities Act of 1933, other than securities offered only in connection with dividend or interest reinvestment plans, check the following box.  ☒

If this form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act, please check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering.  ☐

If this form is a post-effective amendment filed pursuant to Rule 462(c) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering.  ☐

If this form is a registration statement pursuant to General Instruction I.D. or a post-effective amendment thereto that shall become effective upon filing with the Commission pursuant to Rule 462(e) under the Securities Act, check the following box.  ☒

If this form is a post-effective amendment to a registration statement filed pursuant to General Instruction I.D. filed to register additional securities or additional classes of securities pursuant to Rule 413(b) under the Securities Act, check the following box.  ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and “emerging growth company” in Rule 12b-2 of the Exchange Act:

Southwest Gas Holdings, Inc.:

Large accelerated filer	☒	Accelerated filer	☐
Non-accelerated filer	☐	Smaller reporting company	☐
		Emerging growth company	☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 7(a)(2)(B) of the Securities Act.  ☐

Southwest Gas Corporation:

Large accelerated filer	☐	Accelerated filer	☐
Non-accelerated filer	☒	Smaller reporting company	☐
		Emerging growth company	☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 7(a)(2)(B) of the Securities Act.  ☐

PROSPECTUS

Southwest Gas Holdings, Inc.

Southwest Gas Corporation

Common Stock

Preferred Stock

Debt Securities

Guarantees of Debt Securities

Depositary Shares

Warrants

Units

Rights

Southwest Gas Holdings, Inc. may offer and sell any combination of the following securities from time to time in amounts, at prices and on terms that will be determined at the time of any such offering:

• common stock;

• preferred stock;

• debt securities, which may or may not be guaranteed by one or more of its directly or indirectly wholly owned subsidiaries if indicated in the relevant prospectus supplement;

• guarantees of debt securities issued by Southwest Gas Corporation;

• depositary shares;

• warrants to purchase common stock, preferred stock or depositary shares issued by Southwest Gas Holdings, Inc. or debt securities issued by Southwest Gas Holdings, Inc. or Southwest Gas Corporation;

• units; and

• rights.

Southwest Gas Corporation may offer and sell any combination of the following securities from time to time in amounts, at prices and on terms that will be determined at the time of any such offering:

• debt securities, which may or may not be guaranteed by Southwest Gas Holdings, Inc. and may or may not be guaranteed by one or more of its directly or indirectly wholly owned subsidiaries if indicated in the relevant prospectus supplement; and

• guarantees of debt securities issued by Southwest Gas Holdings, Inc. or by one or more of its directly or indirectly wholly owned subsidiaries if indicated in the relevant prospectus supplement.

This prospectus describes some of the general terms that may apply to these securities. We will provide the specific terms of these securities, including their offering prices, in prospectus supplements to this prospectus. Any prospectus supplements may also add, update or change information contained in this prospectus. You should carefully read both this prospectus and any prospectus supplement before you invest.

Southwest Gas Holdings, Inc.’s common stock is listed on the New York Stock Exchange under the symbol “SWX.” On November 27, 2023, the reported last sale price on the New York Stock Exchange for our common stock was $60.04 per share.

These securities may be offered and sold to or through one or more underwriters, dealers and agents or directly to purchasers or through a combination of these methods, on a continuous or delayed basis. You can find additional information about our plan of distribution for the securities under the heading “Plan of Distribution” beginning on page 25 of this prospectus. We will also describe the plan of distribution for any particular offering of these securities in the prospectus supplement. This prospectus may not be used to sell our securities unless it is accompanied by a prospectus supplement.

Investing in our securities involves risks. You should consider the risk factors described in any accompanying prospectus supplement or any documents we incorporate by reference.

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined if this prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

The date of this prospectus is November 28, 2023

TABLE OF CONTENTS

Caption	Page
ABOUT THIS PROSPECTUS		1
CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING INFORMATION		2
OUR COMPANY		4
RISK FACTORS		5
USE OF PROCEEDS		5
DESCRIPTION OF CAPITAL STOCK		6
DESCRIPTION OF DEBT SECURITIES		11
DESCRIPTION OF GUARANTEES		18
DESCRIPTION OF DEPOSITARY SHARES		20
DESCRIPTION OF WARRANTS		21
DESCRIPTION OF UNITS		23
DESCRIPTION OF RIGHTS		24
PLAN OF DISTRIBUTION		25
WHERE YOU CAN FIND MORE INFORMATION		26
INCORPORATION BY REFERENCE		27
EXPERTS		28
LEGAL MATTERS		28

You should rely only on the information contained or incorporated by reference in this prospectus, in any accompanying prospectus supplement or in any free writing prospectus filed by us with the Securities and Exchange Commission (the “SEC”). We have not authorized any other person to provide you with different information. If anyone provides you with different or inconsistent information, you should not rely on it. You should assume that the information appearing in this prospectus and any prospectus supplement or in any such free writing prospectus is accurate as of the dates on their covers. Our business, financial condition, results of operations and prospects may have changed since those dates. Any information contained on or accessible through our website is not incorporated herein and does not constitute part of this prospectus.

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ABOUT THIS PROSPECTUS

This prospectus is part of a registration statement that we filed with the SEC under the Securities Act of 1933, as amended (the “Securities Act”), utilizing a “shelf” registration process. Under this shelf registration process, we may, from time to time, sell in one or more offerings any of our securities described in this prospectus.

This prospectus provides you with a general description of the securities that we may offer. Each time we sell securities, we will provide a prospectus supplement that will contain specific information about the terms of that offering, including the specific amounts, prices and terms of the securities offered. The prospectus supplement may also add, update or change information contained in this prospectus. If there is any inconsistency between the information in this prospectus and a prospectus supplement, you should rely on the information in that prospectus supplement.

You should carefully read both this prospectus and any prospectus supplement, together with additional information described under the heading “Where You Can Find More Information” and “Incorporation by Reference.”

In this prospectus, unless the context indicates otherwise, the words and terms “Southwest Gas Holdings,” “the Company,” “we,” “our,” “ours” and “us” refer to Southwest Gas Holdings, Inc., together with our subsidiaries. The term “Southwest Gas Holdings, Inc.” refers to Southwest Gas Holdings, Inc. without its consolidated subsidiaries. The term “Southwest” refers to our subsidiary, Southwest Gas Corporation, either on a standalone basis or together with its consolidated subsidiaries, as the context requires. The term “Centuri” refers to Centuri Group, Inc., a wholly owned subsidiary of Southwest Gas Holdings, Inc. that represents its utility infrastructure services segment.

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CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING INFORMATION

This prospectus and the documents we incorporate by reference herein and therein contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, Section 27A of the Securities Act or Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). All statements other than statements of historical fact included or incorporated by reference in this prospectus are forward-looking statements, including, without limitation, statements regarding the Company’s and Southwest’s plans, objectives, goals, intentions, projections, strategies, future events or performance, negotiations, and underlying assumptions. The words “may,” “if,” “will,” “should,” “could,” “expect,” “plan,” “anticipate,” “believe,” “estimate,” “predict,” “project,” “continue,” “forecast,” “intend,” “endeavor,” “promote,” “seek,” “pursue,” and similar words and expressions are generally used and intended to identify forward-looking statements. For example, statements regarding plans to refinance near-term maturities, plans to separate from Centuri by means of one or more disposition transactions, including by way of a pro rata distribution to our stockholders, one or more distributions in exchange for our common stock or other securities, a sell-down of shares of our common stock or any combination thereof, or an initial public offering by Centuri followed by one or more disposition transactions, the intended tax treatment of any separation of Centuri, those regarding operating margin patterns, customer growth, the composition of our customer base, price volatility, seasonal patterns, the ability to pay debt, Southwest’s company-owned life insurance (“COLI”) strategy, the magnitude of future acquisition or divestiture purchase price true-ups or post-closing payments and related impairments or losses related thereto, replacement market and new construction market, impacts from pandemics, including on our employees, customers, business, financial position, earnings, bad debt expense, work deployment and related uncertainties, expected impacts of valuation adjustments associated with any redeemable noncontrolling interests, the profitability of storm work, mix of work, or absorption of fixed costs by larger infrastructure services customers (including Southwest), the impacts of U.S. tax reform, including disposition in any regulatory proceeding and bonus depreciation tax deductions, the impact of recent Pipeline and Hazardous Materials Safety Administration rulemaking, the amounts and timing for completion of estimated future construction expenditures, plans to pursue infrastructure programs or programs under SB 151 legislation, forecasted operating cash flows and results of operations, net earnings impacts or recovery of costs from gas infrastructure replacement and Vintage Steel Pipe programs and surcharges, funding sources of cash requirements, amounts generally expected to be reflected in future period revenues from regulatory rate proceedings including amounts requested or settled from recent and ongoing general rate cases or other regulatory proceedings, rates and surcharges, Purchased Gas Account (“PGA”) administration, recovery and timing, and other rate adjustments, sufficiency of working capital and current credit facilities or the ability to cure negative working capital balances, bank lending practices, the Company’s views regarding its liquidity position, ability to raise funds and receive external financing capacity and the intent and ability to issue various financing instruments and stock under an at-the-market equity program or otherwise, future dividends or increases and the board of directors’ current payout strategy, pension and postretirement benefits, certain impacts of tax acts, the effect of any other rate changes or regulatory proceedings, contract or construction change order negotiations, impacts of accounting standard updates, statements regarding future gas prices, gas purchase contracts and pipeline imbalance charges or claims related thereto, recoverability of regulatory assets, the impact of certain legal proceedings or claims, and the timing and results of future rate hearings, including any ongoing or future general rate cases and other proceedings, statements regarding any strategic review, optimization opportunity identification, benchmarking, and assessment, including the timing and costs of any such processes, and statements regarding pending approvals are forward-looking statements.

A number of important factors affecting the business and financial results of the Company and Southwest could cause actual results to differ materially from those stated in the forward-looking statements. These factors include, but are not limited to, customer growth rates, conditions in the housing market, inflation, interest rates and related government actions, sufficiency of labor markets and ability to timely hire qualified employees or similar resources, acquisition and divestiture decisions including prices paid or received, adjustments, indemnifications, or commitments related thereto, and their impacts to impairments, write-downs, or losses or expenses generally, the impacts of pandemics including that which may result from a restriction by government

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officials or otherwise, including impacts on employment in our territories, the health impacts to our customers and employees, the ability to collect on customer accounts due to the suspension or lifted moratorium on late fees or service disconnection or otherwise in any or all jurisdictions, the ability to obtain regulatory recovery of related costs, the ability of the infrastructure services business to conduct work and the impact of a delay or termination of work, and decisions of Centuri customers (including Southwest) as to whether to pursue capital projects due to economic impacts resulting from a pandemic or otherwise, the ability to recover and timing thereof related to costs associated with the PGA mechanisms or other regulatory assets or programs, the effects of regulation/deregulation, governmental or regulatory policy regarding pipeline safety, greenhouse gas emissions, natural gas, including potential prohibitions on the use of natural gas by customers or potential customers, including related to electric generation or natural gas appliances, or regarding alternative energy, the regulatory support for ongoing infrastructure programs or expansions, the timing and amount of rate relief, the impact of other regulatory proceedings, the timing and methods determined by regulators to refund amounts to customers resulting from U.S. tax reform, changes in rate design, impacts of other tax regulations, variability in volume of gas or transportation service sold to customers, changes in gas procurement practices, changes in capital requirements and funding, the impact of credit rating actions and conditions in the capital markets on financing costs, changes in construction expenditures and financing, levels of or changes in operations and maintenance expenses, or other costs, including fuel costs and other costs impacted by inflation or otherwise, geopolitical influences on the business or its costs, effects of pension or other postretirement benefit expense forecasts or plan modifications, accounting changes and regulatory treatment related thereto, currently unresolved and future liability claims and disputes, changes in pipeline capacity for the transportation of gas and related costs, results of Centuri bid work, the impact of weather on Centuri’s operations, projections about acquired business’ earnings, or those that may be planned, future acquisition-related costs, differences between the actual experience and projections in costs to integrate or stand-up portions of newly acquired business operations, impacts of changes in the value of any redeemable noncontrolling interests if at other than fair value, Centuri utility infrastructure expenses, differences between actual and originally expected outcomes of Centuri bid or other fixed-price construction agreements, outcomes from contract and change order negotiations, ability to successfully procure new work and impacts from work awarded or failing to be awarded from significant customers (collectively, including from Southwest) or related to significant projects, the mix of work awarded, the amount of work awarded to Centuri following the lifting of work stoppages or reduction, the result of productivity inefficiencies from regulatory requirements, customer supply chain challenges, or otherwise, delays or challenges in commissioning individual projects, acquisitions and management’s plans related thereto, the ability of management to successfully finance, close, and assimilate any acquired businesses, the timing and ability of management to successfully consummate the separation of Centuri, the nature and timing of the separation and impacts on our consolidated earnings or stock price as a result, the impact on our stock price or our credit ratings due to undertaking or failing to undertake acquisition or divestiture activities or other strategic endeavors, the impact on our stock price, costs, actions or disruptions or continuation thereof related to significant stockholders and their activism, competition, our ability to raise capital in external financings, our ability to continue to remain within the ratios and other limits subject to our debt covenants, and ongoing evaluations in regard to goodwill or other intangible assets, and optimization initiatives, including costs related thereto. In addition, the Company can provide no assurance that its discussions regarding certain trends or plans relating to its financing and operating expenses will continue, proceed as planned, or cease to continue, or fail to be alleviated, in future periods. Additional factors that could cause actual results to differ and that you should consider prior to investing in our securities are discussed under the heading “Risk Factors” and in other sections of this prospectus and our current and periodic reports, and other filings, filed from time to time with the SEC that are incorporated by reference into this prospectus. See “Incorporation by Reference” and “Where You Can Find More Information” below for information about how to obtain copies of those documents. All forward-looking statements in this prospectus and the documents incorporated by reference herein are made only as of the date of the document in which they are contained, based on information available to us as of the date of that document, and we caution you not to place undue reliance on forward-looking statements in light of the risks and uncertainties associated with them. We assume no obligation to update any forward-looking statements, whether as a result of new information, future events or otherwise.

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OUR COMPANY

Southwest Gas Holdings, Inc., a Delaware corporation, is a holding company headquartered in Las Vegas, Nevada. Through its wholly owned subsidiaries, Southwest and Centuri, the Company operates in two business segments: natural gas distribution and utility infrastructure services.

Southwest, incorporated in March 1931 under the laws of the state of California, provides regulated natural gas distribution services to customers in portions of Arizona, Nevada, and California. Public utility rates, practices, facilities, and service territories of Southwest are subject to regulatory oversight. The timing and amount of rate relief can materially impact results of operations. Natural gas purchases and the timing of related recoveries can materially impact liquidity. Results for the natural gas distribution segment are higher during winter periods due to the seasonality incorporated in its regulatory rate structures.

Southwest is subject to regulation by the Arizona Corporation Commission, the Public Utilities Commission of Nevada, and the California Public Utilities Commission (the “CPUC”). The CPUC regulates the issuance of all securities by Southwest, with the exception of short-term borrowings. Certain of the Company’s and Southwest’s accounting practices, transmission facilities and rates are subject to regulation by the Federal Energy Regulatory Commission (the “FERC”). Centuri is not regulated by the state utilities commissions or by the FERC in any of its operating areas.

Centuri is a strategic utility infrastructure services company dedicated to partnering with North America’s electric and gas providers to build and maintain the energy network that powers millions of homes across the United States and Canada. Centuri’s skilled workforce delivers a comprehensive and integrated array of solutions through its primary operating companies: NPL Construction Co., NPL Canada Ltd., New England Utility Constructors, Inc., Linetec Services, LLC, and Riggs Distler & Company, Inc. Centuri has strategically expanded its geographic reach and service offerings through organic and inorganic growth to better meet diverse customer needs across both electric and gas infrastructure, including growing customer attention to achieving environmental objectives. On December 15, 2022, we announced that our board of directors (the “Board”) had determined to separate Centuri from Southwest Gas Holdings into a standalone, independent public company. On September 22, 2023, we announced that Centuri Holdings, Inc. (“Centuri Holdings”) had confidentially submitted a draft registration statement with respect to an initial public offering of its shares of common stock (the “Centuri IPO”). We remain committed to separating Centuri and continue to assess the value of a potential tax-free spin-off of Centuri, either following, or in lieu of, a potential initial public offering by Centuri. Following a Centuri IPO, if one occurs, we intend to maintain the flexibility to dispose of our remaining Centuri interests in a number of ways, including through a spin-off transaction, open market sales of Centuri Holdings common stock or an exchange offer of our common stock for Centuri Holdings common stock.

Our corporate headquarters is located at 8360 S. Durango Drive, P.O. Box 98510, Las Vegas, Nevada 89150-8510, telephone number (702) 876-7237.

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RISK FACTORS

Our business is subject to certain risks and uncertainties. You should carefully consider and evaluate all of the information included and incorporated by reference in this prospectus and any applicable prospectus supplement, including the risk factors incorporated by reference to our Annual Report on Form 10-K for the year ended December 31, 2022, as well as any risk factors we may describe in any subsequent periodic reports or information we file with the SEC. It is possible that our business, financial condition, liquidity or results of operations could be materially adversely affected by any of these risks.

USE OF PROCEEDS

Unless otherwise indicated in the applicable prospectus supplement or other offering material, we intend to use the net proceeds from the sale of securities for general corporate purposes, which may include the following: refunding, repurchasing, retiring upon maturity or redeeming existing debt; funding for working capital; capital expenditures; repurchases of our capital stock; and strategic investments and acquisitions.

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DESCRIPTION OF CAPITAL STOCK

General

The authorized capital stock of Southwest Gas Holdings, Inc. consists of (1) 120,000,000 shares of Southwest Gas Holdings, Inc. common stock, with a $1.00 par value, (2) 5,000,000 shares of preferred stock, without par value, and (3) 2,000,000 shares of preference stock, with a $20.00 par value. As of November 17, 2023, there were issued and outstanding 71,521,131 shares of Southwest Gas Holdings, Inc. common stock and no shares of Southwest Gas Holdings, Inc. preferred stock or preference stock. No other classes of capital stock are authorized under our certificate of incorporation.

The following description of Southwest Gas Holdings, Inc.’s capital stock is only a summary and is qualified in its entirety by reference to our certificate of incorporation, bylaws and the Tax-Free Spin Protection Plan, dated as of November 5, 2023 (as the same may be amended from time to time, the “Plan”), between the Company and Equiniti Trust Company, LLC, as rights agent. Therefore, you should read carefully the more detailed provisions of our certificate of incorporation, bylaws and the Plan, copies of which are incorporated by reference as exhibits to the registration statement of which this prospectus is a part.

Common Stock

We have one class of common stock. All holders of our common stock are entitled to the same rights and privileges, as described below.

Voting Rights. Except as otherwise provided by law, each holder of common stock is entitled to one vote per share on each matter submitted to a vote at a meeting of stockholders, including the election of directors.

Dividends. The holders of Southwest Gas Holdings, Inc. common stock are entitled to receive such dividends as the Board may from time to time declare, subject to any rights of holders of outstanding shares of Southwest Gas Holdings, Inc. preferred stock.

Liquidation. In the event of any liquidation, dissolution or winding up of Southwest Gas Holdings, Inc., whether voluntary or involuntary, the holders of shares of Southwest Gas Holdings, Inc. common stock, subject to any rights of the holders of outstanding shares of Southwest Gas Holdings, Inc. preferred stock, are entitled to receive any remaining assets of Southwest Gas Holdings, Inc. after the discharge of its liabilities.

Rights and Preferences. Holders of Southwest Gas Holdings, Inc. common stock are not entitled to preemptive rights to subscribe for, or purchase any part of, any new or additional issue of stock or securities convertible into stock. Southwest Gas Holdings, Inc. common stock does not contain any redemption provisions or conversion rights and is not liable to assessment or further call.

Preferred Stock Purchase Rights

On November 3, 2023, the Board authorized a dividend of one preferred stock purchase right (a “Right”) for each outstanding share of Southwest Gas Holdings, Inc. common stock, which was paid to holders of record of Southwest Gas Holdings, Inc. common stock as of 5:00 P.M., New York City time, on November 17, 2023 (the “Record Date”). The description and terms of the Rights are set forth in the Plan. Each Right entitles the registered holder to purchase from the Company one ten-thousandth (a “Unit”) of a share of Series A Junior Participating Preferred Stock, no par value per share, of the Company (the “Series A Preferred”), at a purchase price of $300.00 per one ten-thousandth of a share of Series A Preferred (the “Purchase Price”), subject to adjustment.

The Plan is intended to preserve the Company’s ability to effectuate a separation of Centuri Holdings (the “Spin-Off Transaction”) that would be tax-free to the Company (the “Tax-Free Status”), which status could

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be lost if certain stock purchases (including by existing or new holders in the open market) are treated as part of a plan pursuant to which one or more persons directly or indirectly acquire a 50% or greater interest in the Company (a “355 Ownership Change”) within applicable time periods for purposes of Section 355(e) of the Internal Revenue Code of 1986, as amended (the “Code”).

Distribution Date. Initially, the Rights will be attached to all shares of Southwest Gas Holdings, Inc. common stock, and no separate certificates evidencing the Rights will be issued. Subject to certain exceptions, until the Distribution Date (as defined below), the Company will issue one Right with each new share of Southwest Gas Holdings, Inc. common stock issued after the Record Date so that all shares of Southwest Gas Holdings, Inc. common stock will have Rights attached, the Rights will be transferred with and only with Southwest Gas Holdings, Inc. common stock, and any transfer of Southwest Gas Holdings, Inc. common stock will constitute a transfer of the associated Rights. After the Distribution Date, the Rights will separate from the Southwest Gas Holdings, Inc. common stock and, as soon as practicable after the Distribution Date, separate certificates evidencing the Rights (“Rights Certificates”) will be mailed to holders of record of Southwest Gas Holdings, Inc. common stock as of the close of business on the Distribution Date and such separate Rights Certificates alone will evidence the Rights.

The “Distribution Date” means the earlier of:

• ten business days after the public announcement that a person or group of affiliated or associated persons has become an Acquiring Person (as defined below) or such earlier date, as a majority of the Board becomes aware of the existence of an Acquiring Person; and

• such date (prior to such time as any person or group of affiliated or associated persons becomes an Acquiring Person), if any, as may be determined by the Board following the commencement of, or the first public announcement of an intention to commence, a tender offer or exchange offer the consummation of which would result in any person or group of affiliated or associated persons becoming an Acquiring Person.

Exercisability. The Rights will not be exercisable until the Distribution Date. After the Distribution Date, each Right will be exercisable to purchase from the Company one ten-thousandth of a share of Series A Preferred for the Purchase Price. Prior to exercising their Rights, holders of Rights in that capacity have no rights as a stockholder of the Company, including the right to vote or receive dividends.

Consequences of a Person or Group Becoming an Acquiring Person.

• Flip-In Trigger. If any person or group becomes an Acquiring Person, each holder of a Right (other than Rights beneficially owned by an Acquiring Person, affiliates and associates of an Acquiring Person and certain transferees thereof, which Rights will thereupon become null and void) will thereafter have the right to receive upon exercise of a Right that number of shares of Southwest Gas Holdings, Inc. common stock having a market value of two times the Purchase Price.

• Flip-Over Trigger. If, after any person or group has become an Acquiring Person, the Company is acquired in a merger, consolidation or combination or 50% or more of its consolidated assets, cash flow or earning power are transferred, proper provisions will be made so that each holder of a Right (other than Rights beneficially owned by an Acquiring Person, affiliates and associates of an Acquiring Person and certain transferees thereof, which Rights will have become null and void) will thereafter have the right to receive upon the exercise of a Right that number of shares of common stock of the person (or its parent) with whom the Company has engaged in the foregoing transaction having a market value of two times the Purchase Price.

• Exchange Feature. At any time after any person or group becomes an Acquiring Person and prior to the earlier of one of the events described in the previous paragraph or the acquisition by an Acquiring Person of 50% or more of the outstanding shares of Southwest Gas Holdings, Inc. common stock, the

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Board may exchange the Rights (other than Rights owned by an Acquiring Person, affiliates and associates of an Acquiring Person and certain transferees thereof, which Rights will have become null and void), in whole or in part, for shares of Southwest Gas Holdings, Inc. common stock or fractions of Series A Preferred (such a share of Southwest Gas Holdings, Inc. common stock or a fraction of Series A Preferred, as applicable, an “Exchange Security”), at an exchange ratio of one Exchange Security per Right.

Expiration. The Rights will expire on the earliest of (a) the close of business on the date that is two years after the date on which the Spin-Off Transaction is consummated (consistent with a presumption period for testing for a 355 Ownership Change), (b) the close of business on the date on which the Board determines to no longer pursue the Spin-Off Transaction or that the Spin-Off Transaction will not be consummated with Tax-Free Status, (c) the time at which the Rights are redeemed or exchanged pursuant to the Plan, (d) the close of business on the business day following the certification of the voting results of the Company’s 2024 annual stockholders meeting, if at such meeting the approval of the Plan has not been obtained, (e) the close of business on the day that is 270 days after the date of the Plan, if the approval of the Company’s stockholders has not been obtained by such date and only if as of such date the Amended and Restated Cooperation Agreement, dated as of October 24, 2022, by and among the Icahn Group (as defined in the Plan) and the Company (as it may be amended, modified, supplemented and/or amended and restated in accordance with the terms thereof from time to time) remains in effect and the Icahn Ownership Event (as defined in the Plan) has not occurred or (f) the time at which the Board determines that there is no longer a risk of a 355 Ownership Change occurring or that a 355 Ownership Change would not in any material respect adversely impact or otherwise impair the Tax-Free Status.

Process to Seek Exemption. The Plan includes procedures by which the Board will consider requests, prior to the date of public announcement that a person has become an Acquiring Person, from any person who desires to effect any acquisition of Southwest Gas Holdings, Inc. common stock that would, if consummated, result in such person beneficially owning 4.9% (9.9% in the case of a passive investor or, in the case of the Icahn Group or any member of the Icahn Group, the applicable amounts set forth in the Plan) or more of the then outstanding shares of Southwest Gas Holdings, Inc. common stock. The Board will only grant an exemption in response to an exemption request if the Board determines that the acquisition of shares of Southwest Gas Holdings, Inc. common stock by the requesting person (A) will not in any material respect adversely impact or otherwise impair the Tax-Free Status or (B) is in the best interests of the Company despite the fact that it may adversely impact in a material respect or otherwise impair the Tax-Free Status.

Redemption of the Rights. At any time before the Distribution Date, the Board may redeem the Rights in whole, but not in part, for $0.0001 per Right (the “Redemption Price”). The Redemption Price is payable, at the option of the Company, in cash, Southwest Gas Holdings, Inc. common stock or such other form of consideration as the Board shall determine. Immediately upon any redemption of the Rights, the right to exercise the Rights will terminate and the only right of the holders of Rights will be to receive the Redemption Price. The Redemption Price will be subject to adjustment.

Amendment. For so long as the Rights are then redeemable, the Company may amend the Plan in any manner. After the Rights are no longer redeemable, the Company may amend the Plan in any manner that does not adversely affect the interests of holders of the Rights (other than an Acquiring Person, affiliates and associates of an Acquiring Person and certain transferees thereof).

Anti-Dilution Provisions. The Board may adjust the Purchase Price, the number of shares of Series A Preferred issuable and the number of outstanding Rights to prevent dilution that may occur from a stock dividend, a stock split, a reclassification of the Series A Preferred or Southwest Gas Holdings, Inc. common stock or certain other specified transactions. No adjustments to the Purchase Price of less than 1% are required to be made.

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Preferred Stock. Each one ten-thousandth of a share of Series A Preferred, if issued:

• Will not be redeemable.

• Will entitle holders to quarterly dividend payments of $.001 per one ten-thousandth of a share of Series A Preferred, or an amount equal to the dividend paid on one share of Southwest Gas Holdings, Inc. common stock, whichever is greater.

• Will entitle holders upon liquidation either to receive $.001 per one ten-thousandth of a share of Series A Preferred, or an amount equal to the payment made on one share of Southwest Gas Holdings, Inc. common stock, whichever is greater.

• Will have the same voting power as one share of Southwest Gas Holdings, Inc. common stock.

• If shares of Southwest Gas Holdings, Inc. common stock are exchanged as a result of a merger, consolidation, or a similar transaction, will entitle holders to a per share payment equal to the payment made on one share of Southwest Gas Holdings, Inc. common stock.

The value of one ten-thousandth of a share of Series A Preferred should approximate the value of one share of Southwest Gas Holdings, Inc. common stock.

Preferred Stock

Our certificate of incorporation authorizes the Board, without further action by the stockholders, to issue up to 5,000,000 shares of preferred stock, without par value, in one or more series and to fix the rights, preferences, privileges and restrictions granted to, or imposed upon, any such wholly unissued series.

Certain Anti-Takeover Matters

Our certificate of incorporation, bylaws and the Plan contain provisions that may have the effect of discouraging persons from acquiring large blocks of Southwest Gas Holdings, Inc. stock or delaying or preventing a change in control of Southwest Gas Holdings, Inc. The material provisions which may have such an effect are:

• provisions requiring a super-majority vote by holders of common stock in order to approve certain types of business combinations;

• a provision permitting the Board to make, amend or repeal the bylaws;

• authorization for the Board to issue preferred stock in series and to fix rights and preferences of the series (including, among other things, whether, and to what extent, the shares of any series will have voting rights and the extent of the preferences of the shares of any series with respect to dividends and other matters);

• advance notice procedures with respect to proposals other than those adopted or recommended by the Board;

• provisions permitting amendment of certain of these provisions only by an affirmative vote of the holders of at least 65 percent of the outstanding shares of Southwest Gas Holdings, Inc. common stock entitled to vote; and

• provisions requiring director nominees nominated by a stockholder (each such person, a “Stockholder Nominee”) for election to the Board to provide us with certain information with respect to information and agreements between the Stockholder Nominee and any Stockholder Associated Person (as defined in our amended and restated bylaws).

In addition, the Rights may have certain anti-takeover effects. In general terms and subject to certain exceptions, the Plan works by imposing a significant penalty upon any person or group of affiliated or associated

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persons that acquires 4.9% (9.9% in the case of a passive investor or, in the case of the Icahn Group or any member of the Icahn Group, the applicable amounts set forth in the Plan) or more of the outstanding Southwest Gas Holdings, Inc. common stock, except in certain situations specified in the Plan (such person, an “Acquiring Person”). The Rights, however, should not interfere with any merger or other business combination approved by the Board.

Transfer Agent and Registrar

Equiniti Trust Company, LLC is the registrar and transfer agent for our common stock.

Listing

Our common stock is listed on the New York Stock Exchange under the symbol “SWX.”

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DESCRIPTION OF DEBT SECURITIES

The following text describes the general terms and provisions of debt securities that Southwest Gas Holdings, Inc. and/or Southwest Gas Corporation may offer from time to time. For purposes of this “Description of Debt Securities,” “we,” “us” and “our” refer to the relevant issuer of debt securities, Southwest Gas Holdings, Inc. or Southwest Gas Corporation, as the case may be, and not to their respective subsidiaries.

When we offer to sell a particular series of debt securities, we will describe the specific terms of the series in a prospectus supplement. We will also indicate in any applicable prospectus supplement whether the general terms and provisions described in this prospectus apply to a particular series of debt securities. Unless otherwise specified in any applicable prospectus supplement, the senior debt securities will be our direct, unsecured obligations and will rank equally with all of our other unsecured and unsubordinated indebtedness. To the extent we issue secured or subordinated debt securities, the terms will be described in the applicable prospectus supplement.

The debt securities of Southwest Gas Holdings, Inc. will be issued under an indenture between Southwest Gas Holdings, Inc. and The Bank of New York Mellon Trust Company, N.A., as Trustee (the “Holdings Indenture”) in the form included as an exhibit to the registration statement of which this prospectus forms a part. Unless otherwise specified in any applicable prospectus supplement, the debt securities of Southwest Gas Corporation will be issued under the indenture, dated as of June 4, 2020, by and between Southwest Gas Corporation and The Bank of New York Mellon Trust Company, N.A., as Trustee (the “Corporation Indenture” and, together with the Holdings Indenture, the “Indentures”). Each Indenture describes the terms of the debt securities and does not limit the amount of debt securities or other unsecured, senior debt we may issue. We have summarized the general terms and provisions of the debt securities to be governed by each Indenture. The summary is not complete and is subject to, and qualified in its entirety by reference to, all provisions of the Indenture and the Trust Indenture Act of 1939, as amended (the “Trust Indenture Act”). We encourage you to read the Indentures. Capitalized terms used in this description of our debt securities have the meanings ascribed to them in the applicable Indenture.

General

The terms of each series of debt securities will be established by the Board or a committee thereof and set forth or determined in the manner provided in an Officers’ Certificate or by a supplemental indenture to the relevant Indenture. The particular terms of each series of debt securities will be described in a prospectus supplement relating to such series.

We may issue debt securities in one or more series with the same or various maturities, at par, at a premium or at a discount. We need not issue all debt securities of one series at the same time and, unless otherwise provided, we may without the consent of the holders of the debt securities of that series reopen a series and issue additional debt securities of that series. We will set forth in a prospectus supplement the aggregate principal amount of any series of debt securities being offered and their specific terms, including, to the extent applicable, the following terms:

• the title of the debt securities;

• any limit on the aggregate principal amount of the debt securities;

• the date or dates on which we will pay the principal on the debt securities;

• the rate or rates (which may be fixed or variable) per annum or the method used to determine the rate or rates (including any commodity, commodity index, stock exchange index or financial index) at which the debt securities will bear interest, the date or dates from which interest will accrue, the date or dates on which interest will commence and be payable and any regular record date for the interest payable on any interest payment date;

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• the place or places where principal of, and premium, if any, and interest on, the debt securities will be payable;

• the terms and conditions upon which we may redeem or prepay the debt securities;

• any obligation or right we have to redeem, repay or purchase the debt securities pursuant to any sinking fund or analogous provision or at the option of a holder of debt securities;

• the dates on which and the price or prices at which we will repurchase debt securities at the option of the holders of debt securities and other detailed terms and provisions of these repurchase obligations;

• the denominations in which the debt securities will be issued, if other than minimum denominations of $2,000 and any integral multiples of $1,000 in excess thereof;

• whether the debt securities will be issued in certificated or “book-entry only” form;

• the portion of principal amount of the debt securities payable upon declaration of acceleration of the maturity date, if other than the entire principal amount;

• the currency of denomination of the debt securities;

• whether or not the debt securities will be secured or unsecured, and the terms of any secured debt;

• the terms of the subordination of any series of subordinated debt;

• the designation of the currency, currencies or currency units in which payment of principal of, and premium and interest on, the debt securities will be made;

• if payments of principal of, or premium or interest on, the debt securities will be made in one or more currencies or currency units other than that or those in which the debt securities are denominated, the manner in which the exchange rate with respect to these payments will be determined;

• the manner in which the amounts of payment of principal of, or premium or interest on, the debt securities will be determined, if these amounts may be determined by reference to an index based on a currency or currencies other than that in which the debt securities are denominated or designated to be payable or by reference to a commodity, commodity index, stock exchange index or financial index;

• any provisions relating to any collateral securing or guarantees of payments of principal of, or premium or interest on, the debt securities;

• any addition to or change in the Events of Default described in this prospectus or in the relevant Indenture with respect to the debt securities and any change in the acceleration provisions described in this prospectus or in the relevant Indenture with respect to the debt securities;

• any addition to or change in the covenants described in this prospectus or in the relevant Indenture with respect to the debt securities;

• any conversion provisions, including the conversion rate, the conversion period, provisions as to whether conversion will be mandatory, at the option of the holder or at our option, the events requiring an adjustment of the conversion rate and provisions affecting conversion if such series of debt securities is redeemed;

• any depositories, interest rate calculation agents, exchange rate calculation agents or other agents with respect to the debt securities; and

• any other terms of the debt securities, which may modify, delete, supplement or add to any provision of the relevant Indenture as it applies to that series.

We will provide you with information on the federal income tax considerations and other special considerations applicable to any of these debt securities in the applicable prospectus supplement.

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If we denominate the purchase price of any of the debt securities in a foreign currency or currencies or a foreign currency unit or units, or if the principal of, and premium and interest on, any series of debt securities is payable in a foreign currency or currencies or a foreign currency unit or units, we will provide you with information on the restrictions, elections, general tax considerations, specific terms and other information with respect to that issue of debt securities and such foreign currency or currencies or foreign currency unit or units in the applicable prospectus supplement.

Transfer and Exchange

Each debt security will be represented by either one or more global securities registered in the name of The Depository Trust Company, as depositary, or a nominee (which we refer to, in the case of any debt security represented by a global debt security, as a “book-entry debt security”), or a certificate issued in definitive registered form (which we refer to, in the case of any debt security represented by a certificated security, as a “certificated debt security”) as set forth in the applicable prospectus supplement. Except as set forth in the applicable prospectus supplement, book-entry debt securities will not be issuable in certificated form.

You may transfer or exchange certificated debt securities at any office we maintain for this purpose in accordance with the terms of the Indenture. No service charge will be made for any registration of transfer or exchange of certificated debt securities, but we may require payment of a sum sufficient to cover all taxes, assessments or other governmental charges that may be imposed in connection with a transfer or exchange.

You may effect the transfer of certificated debt securities and the right to receive the principal of, and any premium and interest on, certificated debt securities only by surrendering the certificate representing those certificated debt securities and either execution by us, and authentication and delivery by the Trustee, of the certificate to the new holder or execution by us, and authentication and delivery by the Trustee, of a new certificate to the new holder.

Covenants

We will set forth in the applicable prospectus supplement any financial or restrictive covenants applicable to any issue of debt securities.

No Protection in the Event of a Change of Control

Unless we state otherwise in the applicable prospectus supplement, the debt securities will not contain any provisions which may afford holders of the debt securities protection in the event we have a change in control or in the event of a highly leveraged transaction (whether or not such transaction results in a change in control) which could adversely affect holders of debt securities.

Consolidation, Merger and Sale of Assets

We or any guarantor of the debt securities shall not consolidate with or sell, lease or convey all or substantially all of our properties or assets to, or merge with or into, in one transaction or a series of related transactions, any Person unless:

• we or such guarantor, as the case may be, is the continuing Person or, alternatively, the successor Person is organized under the laws of the United States of America, any State thereof or the District of Columbia, and such Person (if not us or such guarantor, as the case may be) expressly assumes, by a supplemental indenture, executed and delivered to the Trustee, in form reasonably satisfactory to the Trustee, all of our obligations under the debt securities and under the relevant Indenture or all of such guarantor’s obligations under its guarantee of the debt securities, as the case may be;

• immediately after giving effect to such transaction, no default or Event of Default has occurred or is continuing; and

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• we have delivered to the Trustee an Officers’ Certificate and an Opinion of Counsel, each stating that such consolidation, merger, conveyance, or transfer and such supplemental indenture complies with this provision and that such supplemental indenture constitutes the legal, valid and binding obligation of the successor Person subject to customary exceptions.

Events of Default

“Event of Default” means with respect to any series of debt securities, any of the following:

• a default in the payment of interest upon any debt security of that series when it becomes due and payable, and continuance of such default for a period of 30 days;

• a default in the payment of principal of or premium, if any, on any debt security of that series at its maturity, or otherwise;

• failure by us or any guarantor of the debt securities of that series to comply with any of its agreements in that series of debt securities, the relevant Indenture, or its guarantee of that series of debt securities (collectively, a “Covenant Default”), for a period of 90 days after written notice specified below;

• any guarantee with respect to the debt securities of that series ceases for any reason to be, or is asserted by us or the guarantor not to be, in full force and effect and enforceable in accordance with its terms except to the extent contemplated in the relevant Indenture or the guarantee of that series of debt securities;

• certain voluntary or involuntary events of bankruptcy, insolvency or reorganization of us or any guarantor of the debt securities of that series; and

• any other Event of Default provided with respect to the debt securities of that series that is described in the applicable prospectus supplement.

A default constituting a Covenant Default with respect to a particular series of debt securities (except as to certain events of bankruptcy, insolvency or reorganization) is not an Event of Default until the Trustee (by written notice to us) or the holders of at least 25% in aggregate principal amount of the outstanding debt securities of that series (by written notice to us and the Trustee) gives notice of the default and we do not cure such default within 90 days after receipt of such notice.

No Event of Default with respect to a particular series of debt securities (except as to certain events of bankruptcy, insolvency or reorganization) necessarily constitutes an Event of Default with respect to any other series of debt securities. The occurrence of certain Events of Default or an acceleration under the relevant Indenture may constitute an event of default under certain indebtedness of ours or our Subsidiaries outstanding from time to time.

In the case of an Event of Default resulting from certain events of bankruptcy, insolvency or reorganization, the principal of and accrued and unpaid interest, if any, on all outstanding debt securities will become and be immediately due and payable without any declaration or other act on the part of the Trustee or any holder of outstanding debt securities. If any other Event of Default with respect to debt securities of any series at the time outstanding occurs and is continuing, then the Trustee or the holders of not less than 25% in principal amount of the outstanding debt securities of that series may, by a notice in writing to us (and to the Trustee if given by the holders), declare to be due and payable immediately the principal of and accrued and unpaid interest, if any, on all debt securities of that series. At any time after a declaration of acceleration with respect to debt securities of any series has been made, the holders of a majority in principal amount of the outstanding debt securities of that series may rescind the acceleration and its consequences if all Events of Default, other than the nonpayment of accelerated principal and interest, if any, with respect to debt securities of that series, have been cured or waived as provided in the relevant Indenture. We refer you to the applicable prospectus supplement relating to any series of debt securities that are discount securities for the particular provisions relating to acceleration of a portion of the principal amount of such discount securities upon the occurrence of an Event of Default.

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The Indentures provide that the Trustee may refuse to perform any duty or exercise any of its rights or powers under the relevant Indenture unless the Trustee receives indemnity and/or security reasonably satisfactory to it against any loss, liability or expense which might be incurred by it in performing such duty or exercising such right or power. Subject to certain rights of the Trustee, the holders of a majority in principal amount of the outstanding debt securities of any series will have the right to direct the time, method and place of conducting any proceeding for any remedy available to the Trustee or exercising any trust or power conferred on the Trustee with respect to the debt securities of that series.

No holder of any debt security of any series will have any right to pursue any remedy under the relevant Indenture or that series of debt securities, unless:

• an Event of Default has occurred and is continuing, and that holder has previously given to the Trustee written notice of a continuing Event of Default with respect to debt securities of that series; and

• the holders of not less than 25% in principal amount of the outstanding debt securities of that series have made a written request to the Trustee, and offered indemnity and/or security reasonably satisfactory to the Trustee, to pursue the remedy as Trustee, and the Trustee has not received from the holders of not less than a majority in principal amount of the outstanding debt securities of that series a direction inconsistent with that request within the 60-day period after the request is delivered, and the Trustee has failed to institute the proceeding within 60 days after receipt of the request and the offer or security and/or indemnity.

Notwithstanding any other provision in the relevant Indenture, the holder of any series of debt security will have an absolute and unconditional right to receive payment of the principal, premium and any interest on that debt security on or after the due dates expressed in that series of debt security and to institute suit for the enforcement of payment.

Each Indenture requires us, within 120 days after the end of each fiscal year, to deliver to the Trustee a certificate as to compliance with such Indenture.

Modification and Waiver

We and the Trustee may modify, amend or supplement the relevant Indenture or the debt securities of any series without notice to or the consent of any holder of any debt security:

• to cure any ambiguity, omission, defect or inconsistency;

• to evidence the succession of another Person to us (or any guarantor) and the assumption by any such successor of our obligations (or those of any guarantor) in accordance with “Consolidation, Merger and Sale of Assets”;

• to add any additional Events of Default;

• to add covenants for the benefit of the holders of all of the debt securities of any series or to surrender any right or power conferred upon us by the relevant Indenture;

• to add one or more guarantees for the benefit of the holders of the debt securities of that series or to release one or more guarantees in accordance with the relevant Indenture or any supplemental indenture thereto;

• to add collateral security with respect to the debt securities of that series;

• to add or appoint a successor or separate Trustee or other agent;

• to provide for the issuance of any debt securities or additional debt securities of that series;

• to comply with any requirements in connection with qualifying the relevant Indenture under the Trust Indenture Act;

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• to comply with the rules of any applicable securities depository;

• to provide for uncertificated debt securities in addition to or in place of certificated debt securities; provided, however, that the uncertificated debt securities are issued in registered form for purposes of Section 163(f) of the Code;

• to conform the provisions of the relevant Indenture to the “Description of Notes,” “Description of the Notes and Guarantees,” “Description of Debt Securities” and any similar sections of any offering memorandum or prospectus prepared in connection with the issuance of the debt securities of that series;

• to make changes to the relevant Indenture applicable only to other series of debt securities issuable thereunder; and

• to change any other provision if the change does not adversely affect the interests of any holder of debt securities of that series.

We may also modify and amend the relevant Indenture with the written consent of the holders of at least a majority in principal amount of the outstanding debt securities of each series affected by the modifications or amendments. We may not make any modification or amendment without the consent of each affected holder of a series of debt securities then outstanding if that amendment will:

• change the stated maturity of the principal of, or installment of interest on, any debt security of such series;

• reduce the principal amount of, or the rate of interest on, any debt security of such series;

• reduce any premium payable on the redemption or required repurchase of any debt security of such series or change the date on which any debt security of such series may or must be redeemed, repaid or required to be repurchased;

• change the coin or currency in which the principal of, premium, if any, or interest on any debt security of such series is payable;

• impair the right of any holder of such series to institute suit for the enforcement of any payment on or after the stated maturity of any debt security of such series;

• reduce the percentage in principal amount of the outstanding debt security of such series, the consent of whose holders is required in order to take certain actions;

• reduce the requirements for quorum or voting by holders in the relevant Indenture or the debt securities of such series;

• modify any of the provisions of the relevant Indenture regarding the waiver of past defaults and the waiver of certain covenants by holders except to increase any percentage vote required or to provide that certain other provisions of the relevant Indenture cannot be modified or waived without the consent of the holder of each debt security affected thereby; or

• modify any of the above provisions.

Except for certain specified provisions, the holders of at least a majority in principal amount of the outstanding debt securities of any series may on behalf of the holders of all debt securities of that series waive our compliance with provisions of the relevant Indenture. The holders of a majority in principal amount of the outstanding debt securities of any series may on behalf of the holders of all the debt securities of such series waive any past default under the relevant Indenture with respect to that series and its consequences, except a default in the payment of the principal, premium or any interest on any debt security of that series; provided, however, that the holders of a majority in principal amount of the outstanding debt securities of any series may rescind an acceleration and its consequences, including any related payment default that resulted from the acceleration.

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Discharge of Debt Securities

When all outstanding debt securities of any series will become due and payable at their stated maturity within one year and we have deposited (or caused to be deposited) with the Trustee cash sufficient to pay and discharge all outstanding debt securities of such series on the date of their stated maturity, then we may satisfy and discharge our obligations under the relevant Indenture with respect to such debt securities while they remain outstanding.

No Personal Liability of Directors, Officers, Employees or Stockholders

None of our past, present or future directors, officers, employees or stockholders, as such, will have any liability for any of our obligations under the debt securities or the relevant Indenture or for any claim based on, or in respect or by reason of, such obligations or their creation. By accepting a debt security, each holder waives and releases all such liability. This waiver and release is part of the consideration for the issue of the debt securities. However, this waiver and release may not be effective to waive liabilities under U.S. federal securities laws, and it is the view of the SEC that such a waiver is against public policy.

Governing Law

The Indentures and the debt securities will be governed by, and construed in accordance with, the internal laws of the State of New York.

Concerning the Trustee

The Indentures and provisions of the Trust Indenture Act, which are incorporated by reference therein, contain limitations on the rights of the Trustee, should it become one of our creditors, to obtain payment of claims in certain cases, or to realize on property received in respect of any such claim, as security or otherwise. The Trustee and its affiliates may engage in, and will be permitted to continue to engage in, other transactions with us and our affiliates; provided, however, that if it acquires any conflicting interest (as defined in the Trust Indenture Act), it must eliminate the conflict or resign. The Trust Indenture Act and the relevant Indenture provide that in case an Event of Default shall occur (and be continuing), the Trustee will be required, in the exercise of its rights and powers, to use the same degree of care and skill of a prudent person in the conduct of such person’s own affairs. Subject to such provision, the Trustee will be under no obligation to exercise any of its rights or powers under the relevant Indenture at the request of any of the holders of the debt securities issued thereunder, unless they have offered to the Trustee security or indemnity satisfactory to it.

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DESCRIPTION OF GUARANTEES

The debt securities of any series of the applicable issuer may have the benefit of guarantees (each, a “Guarantee”), by one or more of its subsidiaries (each, a “Guarantor”). In the case of Southwest Gas Corporation, the debt securities may or may not be guaranteed by Southwest Gas Holdings, Inc., its direct parent. The Guarantees, if any, will be the unsubordinated and, unless otherwise expressly stated in the applicable prospectus supplement, unsecured obligations of the respective Guarantors. The Guarantors of any series of guaranteed debt securities of each issuer may differ from the Guarantors of any other series of guaranteed debt securities of each issuer. In the event Southwest Gas Holdings, Inc. or Southwest Gas Corporation, as applicable, issues a series of guaranteed debt securities, the specific Guarantors of the debt securities of that series will be identified in the applicable prospectus supplement.

If Southwest Gas Holdings, Inc. or Southwest Gas Corporation, as applicable, issues a series of guaranteed debt securities, a description of some of the terms of Guarantees of those debt securities will be set forth in the applicable prospectus supplement. Unless otherwise provided in the prospectus supplement relating to a series of guaranteed debt securities, each Guarantor of the debt securities of such series will unconditionally guarantee the due and punctual payment of the principal of, and premium, if any, and interest, if any, on and any other amounts payable with respect to, each debt security of such series and the due and punctual performance of all of the applicable issuer’s other obligations under the applicable Indenture with respect to the debt securities of such series, all in accordance with the terms of such debt securities and the applicable Indenture.

Notwithstanding the foregoing, unless otherwise provided in the prospectus supplement relating to a series of guaranteed debt securities, the applicable Indenture will contain provisions to the effect that the obligations of each Guarantor under its Guarantees and such Indenture shall be limited to the maximum amount as will, after giving effect to all other contingent and fixed liabilities of such Guarantor, result in the obligations of such Guarantor under such Guarantees and such Indenture not constituting a fraudulent conveyance or fraudulent transfer under applicable law. However, there can be no assurance that, notwithstanding such limitation, a court would not determine that a Guarantee constituted a fraudulent conveyance or fraudulent transfer under applicable law. If that were to occur, the court could void the applicable Guarantor’s obligations under that Guarantee, subordinate that Guarantee to other debt and other liabilities of that Guarantor or take other action detrimental to holders of the debt securities of the applicable series, including directing the holders to return any payments received from the applicable Guarantor.

The applicable prospectus supplement relating to any series of guaranteed debt securities will specify other terms of the applicable Guarantees, which may include provisions that allow a Guarantor to be released from its obligations under its Guarantee under specified circumstances or that provide for one or more Guarantees to be secured by specified collateral.

Unless otherwise expressly stated in the applicable prospectus supplement, each Guarantee will be the unsubordinated and unsecured obligation of the applicable Guarantor and will rank on a parity in right of payment with all other unsecured and unsubordinated indebtedness and guarantees of such Guarantor. Each Guarantee (other than a secured Guarantee) will be effectively subordinated to all existing and future secured indebtedness and secured guarantees of the applicable Guarantor to the extent of the value of the collateral securing that indebtedness and those guarantees. Consequently, in the event of a bankruptcy, liquidation, dissolution, reorganization or similar proceeding with respect to any Guarantor that has provided an unsecured Guarantee of any debt securities, the holders of that Guarantor’s secured indebtedness and secured guarantees will be entitled to proceed directly against the collateral that secures that secured indebtedness or those secured guarantees, as the case may be, and such collateral will not be available for satisfaction of any amount owed by such Guarantor under its unsecured indebtedness and unsecured guarantees, including its unsecured Guarantees of any debt securities, until that secured debt and those secured guarantees are satisfied in full. Unless otherwise provided in the applicable prospectus supplement, the Indentures will not limit the ability of any Guarantor to incur secured indebtedness or issue secured guarantees.

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Unless otherwise expressly stated in the applicable prospectus supplement, each secured Guarantee will be an unsubordinated obligation of the applicable Guarantor and will rank on a parity in right of payment with all other unsecured and unsubordinated indebtedness and guarantees of such Guarantor, except that such secured Guarantee will effectively rank senior to such Guarantor’s unsecured and unsubordinated indebtedness and guarantees in respect of claims against the collateral securing that secured Guarantee.

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DESCRIPTION OF DEPOSITARY SHARES

The following description of depositary shares is only a summary and is qualified by any prospectus supplement and deposit agreement and depositary receipt used in connection with the issuance of each series of preferred stock issued through the use of depositary shares. Therefore, you should read carefully the more detailed description that would be contained in any prospectus supplement and form of deposit agreement and depositary receipt, copies of which are incorporated by reference as exhibits to the registration statement of which this prospectus is a part.

We may offer fractional shares of preferred stock by issuing receipts for depositary shares. The shares of any series of preferred stock represented by depositary shares will be deposited with a bank or trust company and the holders will be issued a depositary receipt entitling them, in proportion to the fraction of a share the receipt represents, to all the rights and preferences of the preferred stock, as more fully described above under the heading “Description of Capital Stock—Preferred Stock.”

The bank or trust company that will be the depositary will function as the intermediary between Southwest Gas Holdings, Inc. and the holders of the depositary receipts. Dividends and other distributions will be provided to the depositary for ultimate distribution to the holders. Redemption of the depositary shares and voting the underlying preferred stock will also be coordinated through the depositary. Holders will have the right to surrender their depositary receipts to the depositary and be entitled to receive whole shares of preferred stock that are represented by such receipts. Though the preferred stock will continue to have all of the rights and preferences, there may be no market opportunity to trade such stock and once withdrawn from the depositary, it may not be redeposited.

We will pay all transfer and other taxes and governmental charges arising solely from the existence of the depositary arrangement. Southwest Gas Holdings, Inc. will also pay charges of the depositary in connection with the initial deposit of the preferred stock and the initial issuance of the depositary receipts, any redemption of the preferred stock and any withdrawal of preferred stock by the holder of the depositary shares. Holders will pay other transfer and other taxes and governmental charges and such other charges specifically provided in the deposit agreement for their individual accounts.

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DESCRIPTION OF WARRANTS

General

We may issue warrants to purchase debt securities, common stock, preferred stock, depositary shares or any combination of these securities. We may issue the warrants independently or together with any underlying securities, and the warrants may be attached or separate from the underlying securities. We may also issue a series of warrants under a separate warrant agreement to be entered into between us and a warrant agent. The warrant agent will act solely as our agent in connection with the warrants of such series and will not assume any obligation or relationship of agency for or with holders or beneficial owners of warrants.

The following description is a summary of selected provisions relating to the warrants that we may issue. The summary is not complete. When warrants are offered in the future, a prospectus supplement, or other offering material as applicable, will explain the particular terms of those securities and the extent to which these general provisions may apply. The specific terms of the warrants as described in a prospectus supplement will supplement and, if applicable, may modify or replace the general terms described in this section.

This summary and any description of warrants in the applicable prospectus supplement or other offering material is subject to and is qualified in its entirety by reference to all the provisions of any specific warrant document or agreement, which we will file with the SEC for incorporation by reference into this prospectus. See “Where You Can Find More Information” and “Incorporation by Reference” for information on how to obtain a copy of a warrant document when it is filed.

When we refer to a series of warrants, we mean all warrants issued as part of the same series under the applicable warrant agreement.

Terms

The prospectus supplement relating to any warrants that we may offer will contain the specific terms of the warrants. These terms may include the following:

• the title of the warrants;

• the total number of warrants;

• the price or prices at which the warrants will be issued;

• the currency or currencies that investors may use to pay for the warrants;

• the date on which the right to exercise the warrants will commence and the date on which the right will expire;

• whether the warrants will be issued in registered form or bearer form;

• information with respect to book-entry procedures, if any;

• if applicable, the minimum or maximum amount of warrants that may be exercised at any one time;

• if applicable, the designation and terms of the underlying securities with which the warrants are issued and the number of warrants issued with each underlying security;

• if applicable, the date on and after which the warrants and the related underlying securities will be separately transferable;

• if applicable, a discussion of material United States federal income tax considerations;

• if applicable, the terms of redemption of the warrants;

• the identity of the warrant agent, if any;

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• the procedures and conditions relating to the exercise of the warrants; and

• any other terms of the warrants, including terms, procedures, and limitations relating to the exchange and exercise of the warrants.

Warrant Agreements

We may issue the warrants in one or more series under one or more warrant agreements, each to be entered into between us and a bank, trust company, or other financial institution as warrant agent. We may add, replace, or terminate warrant agents from time to time. We may also choose to act as our own warrant agent or may choose one of our subsidiaries to do so.

The warrant agent under a warrant agreement will act solely as our agent in connection with the warrants issued under that agreement. The warrant agent will not assume any obligation or relationship of agency or trust for or with any holders of those warrants. Any holder of warrants may, without the consent of any other person, enforce by appropriate legal action, on its own behalf, its right to exercise those warrants in accordance with their terms. Until the warrant is properly exercised, no holder of any warrant will be entitled to any rights of a holder of the warrant property purchasable upon exercise of the warrant.

Form, Exchange, and Transfer

We may issue the warrants in registered form or bearer form. Warrants issued in registered form, i.e., book-entry form, will be represented by a global security registered in the name of a depository, which will be the holder of all the warrants represented by the global security. Those investors who own beneficial interests in a global warrant will do so through participants in the depository’s system, and the rights of these indirect owners will be governed solely by the applicable procedures of the depository and its participants. In addition, we may issue warrants in non-global form, i.e., bearer form. If any warrants are issued in non-global form, warrant certificates may be exchanged for new warrant certificates of different denominations, and holders may exchange, transfer, or exercise their warrants at the warrant agent’s office or any other office indicated in the applicable prospectus supplement or other offering material.

Prior to the exercise of their warrants, holders of warrants exercisable for debt securities will not have any of the rights of holders of the debt securities purchasable upon such exercise and will not be entitled to payments of principal (or premium, if any) or interest, if any, on the debt securities purchasable upon such exercise. Prior to the exercise of their warrants, holders of warrants exercisable for shares of preferred stock or common stock will not have any rights of holders of the preferred stock or common stock purchasable upon such exercise and will not be entitled to dividend payments, if any, or voting rights of the preferred stock or common stock purchasable upon such exercise.

Exercise of Warrants

A warrant will entitle the holder to purchase for cash an amount of securities at an exercise price that will be stated in, or that will be determinable as described in, the applicable prospectus supplement or other offering material. Warrants may be exercised at any time up to the close of business on the expiration date set forth in the applicable prospectus supplement or other offering material. After the close of business on the expiration date, unexercised warrants will become void.

Warrants may be exercised as set forth in the applicable prospectus supplement or other offering material. Upon receipt of payment and the warrant certificate properly completed and duly executed at the corporate trust office of the warrant agent or any other office indicated in the prospectus supplement or other offering material, we will forward, as soon as practicable, the securities purchasable upon such exercise. If less than all of the warrants represented by such warrant certificate are exercised, a new warrant certificate will be issued for the remaining warrants.

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DESCRIPTION OF UNITS

General

We may issue units composed of any combination of our debt securities, common stock, preferred stock, and warrants. We will issue each unit so that the holder of the unit is also the holder of each security included in the unit. As a result, the holder of a unit will have the rights and obligations of a holder of each included security. The unit agreement under which a unit is issued may provide that the securities included in the unit may not be held or transferred separately, at any time or at any time before a specified date.

The following description is a summary of selected provisions relating to units that we may offer. The summary is not complete. When units are offered in the future, a prospectus supplement, or other offering material as applicable, will explain the particular terms of those securities and the extent to which these general provisions may apply. The specific terms of the units as described in a prospectus supplement will supplement and, if applicable, may modify or replace the general terms described in this section.

This summary and any description of units in the applicable prospectus supplement or other offering material is subject to and is qualified in its entirety by reference to the unit agreement and, if applicable, collateral arrangements and depositary arrangements relating to such units. We will file these documents with the SEC for incorporation by reference into this prospectus. See “Where You Can Find More Information” and “Incorporation by Reference” for information on how to obtain a copy of a document when it is filed.

The applicable prospectus supplement or other offering material may describe:

• the designation and terms of the units and of the securities comprising the units, including whether and under what circumstances those securities may be held or transferred separately;

• any provisions for the issuance, payment, settlement, transfer, or exchange of the units or of the securities composing the units;

• whether the units will be issued in fully registered or global form; and

• any other terms of the units.

The applicable provisions described in this section, as well as those described under “Description of Debt Securities,” “Description of Guarantees,” “Description of Capital Stock” and “Description of Warrants,” will apply to each unit and to each security included in each unit, respectively.

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DESCRIPTION OF RIGHTS

We may from time to time, issue rights to purchase our debt securities, common stock, preferred stock or other securities. The rights may or may not be transferable by the persons purchasing or receiving the rights. In connection with any rights offering, we may enter into a standby underwriting or other arrangement with one or more underwriters or other persons pursuant to which such underwriters or other persons would purchase any offered securities remaining unsubscribed after such rights offering.

Each series of rights will be issued under a separate rights agreement to be entered into, from time to time, between us and a bank or trust company, as rights agent, all as set forth in a prospectus supplement relating to the particular issue of rights. The rights agent will act solely as an agent of ours in connection with the certificates relating to the rights and will not assume any obligation or relationship of agency or trust for or with any holders of rights certificates or beneficial owners of rights.

The following description is a summary of selected provisions relating to rights that we may offer. The summary is not complete. When rights are offered in the future, a prospectus supplement, or other offering material as applicable, will explain the particular terms of those securities and the extent to which these general provisions may apply. The specific terms of the rights as described in a prospectus supplement will supplement and, if applicable, may modify or replace the general terms described in this section.

This summary and any description of units in the applicable prospectus supplement or other offering material is subject to and is qualified in its entirety by reference to the rights agreement and, if applicable, underwriting or other arrangements relating to such rights. We will file these documents with the SEC for incorporation by reference into this prospectus. See “Where You Can Find More Information” and “Incorporation by Reference” for information on how to obtain a copy of a document when it is filed.

The applicable prospectus supplement will describe the terms of the rights to be issued, including the following where applicable:

• the date for determining the security holders entitled to the rights distribution;

• the aggregate number of rights and the aggregate of amount of debt securities, common shares, preferred shares or other securities purchasable upon exercise of the rights;

• the exercise price and any adjustments to such exercise price;

• the aggregate number of rights being issued;

• the date, if any, on and after which the rights may be transferable separately;

• the date on which the right to exercise the rights shall commence and the date on which the right shall expire;

• any material U.S. federal income tax consequences; and

• any other terms of the rights, including terms, procedures and limitations relating to the distribution, exchange and exercise of the rights.

If less than all of the rights issued in any rights offering are exercised, we may offer any unsubscribed securities directly to persons other than our security holders, to or through agents, underwriters or dealer or through a combination of such methods, including pursuant to standby arrangements, as described in the applicable prospectus supplement.

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PLAN OF DISTRIBUTION

We may sell the securities described in this prospectus from time to time in one or more transactions:

• to purchasers directly;

• to underwriters for public offering and sale by them;

• through agents;

• through dealers; or

• through a combination of any of the foregoing methods of sale.

We may sell the securities directly to institutional investors or others who may be deemed to be underwriters within the meaning of the Securities Act, with respect to any resale of the securities. A prospectus supplement will describe the terms of any sale of securities we are offering hereunder. Direct sales may be arranged by a securities broker-dealer or other financial intermediary.

The applicable prospectus supplement will name any underwriter involved in a sale of securities. Underwriters may offer and sell securities at a fixed price or prices, which may be changed, or from time to time at market prices or at negotiated prices. Underwriters may be deemed to have received compensation from us from sales of securities in the form of underwriting discounts or commissions and may also receive commissions from purchasers of securities for whom they may act as agent. Underwriters may be involved in any “at the market” offering of securities by or on our behalf.

Underwriters may sell securities to or through dealers, and such dealers may receive compensation in the form of discounts, concessions or commissions from the underwriters and/or commissions (which may be changed from time to time) from the purchasers for whom they may act as agent.

Unless we state otherwise in the applicable prospectus supplement, the obligations of any underwriters to purchase securities will be subject to certain conditions precedent, and the underwriters will be obligated to purchase all the securities if any are purchased.

The applicable prospectus supplement will set forth whether or not underwriters may over-allot or effect transactions that stabilize, maintain or otherwise affect the market price of the securities at levels above those that might otherwise prevail in the open market, including, for example, by entering stabilizing bids, effecting syndicate covering transactions or imposing penalty bids.

We will name any agent involved in a sale of securities, as well as any commissions payable to such agent, in a prospectus supplement.

Unless we state otherwise in the applicable prospectus supplement, any such agent will be acting on a reasonable efforts basis for the period of its appointment.

If a dealer is utilized in the sale of the securities being offered pursuant to this prospectus, we and/or one or more selling stockholders will sell the securities to the dealer, as principal. The dealer may then resell the securities to the public at varying prices to be determined by the dealer at the time of resale.

Underwriters, dealers and agents participating in a sale of the securities may be deemed to be underwriters as defined in the Securities Act, and any discounts and commissions received by them and any profit realized by them on resale of the securities may be deemed to be underwriting discounts and commissions, under the Securities Act. We may have agreements with underwriters, dealers and agents to indemnify them against certain civil liabilities, including liabilities under the Securities Act, and to reimburse them for certain expenses.

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WHERE YOU CAN FIND MORE INFORMATION

We file annual, quarterly and current reports, proxy statements and other information with the SEC. The SEC maintains a website (www.sec.gov) that contains reports, proxy and information statements, and other information regarding issuers, including us, that file electronically with the SEC. The public can obtain any documents that we file electronically with the SEC. You may also obtain our filings through the New York Stock Exchange, 20 Broad Street, New York, New York 10005, on which our common stock is listed.

We also make available, free of charge, on or through our website (https://www.swgasholdings.com) our Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K, Proxy Statements on Schedule 14A and, if applicable, amendments to those reports filed or furnished pursuant to Section 13(a) of the Exchange Act, as soon as reasonably practicable after we electronically file such material with, or furnish it to, the SEC. Please note, however, that we have not incorporated any other information by reference from our website, other than the documents listed under the heading “Incorporation by Reference.”

We have filed with the SEC a registration statement on Form S-3 relating to the securities covered by this prospectus. This prospectus is a part of the registration statement and does not contain all the information in the registration statement. Whenever a reference is made in this prospectus to a contract or other document of ours, the reference is only a summary and you should refer to the exhibits that are a part of the registration statement for a copy of the contract or other document. You may review a copy of the registration statement and the documents incorporated by reference herein through the SEC’s website referenced above.

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INCORPORATION BY REFERENCE

The SEC allows us to “incorporate by reference” into this prospectus the information in other documents that we file with it, which means that we can disclose important information to you by referring you to those documents. The information that we incorporate by reference is considered to be a part of this prospectus.

Any reports that we file with the SEC on or after the date of this prospectus and before the date that the offering of the securities is terminated will automatically update and, where applicable, supersede any information contained in this prospectus or incorporated by reference into this prospectus.

This means that you must look at all of the SEC filings that we incorporate by reference to determine if any of the statements in this prospectus or in any documents previously incorporated by reference into this prospectus have been modified or superseded. We specifically incorporate by reference into this prospectus the following documents filed with the SEC (other than, in each case, documents or information deemed furnished and not filed in accordance with SEC rules, including pursuant to Item 2.02 or Item 7.01 of Form 8-K, and no such information shall be deemed specifically incorporated by reference hereby):

• Annual Report of Southwest Gas Holdings, Inc. on Form 10-K for the year ended December 31, 2022;

• Annual Report of Southwest Gas Corporation on Form 10-K for the year ended December 31, 2022;

• Quarterly Reports of Southwest Gas Holdings, Inc. on Form 10-Q for the quarters ended March 31, 2023, June  30, 2023, and September 30, 2023;

• Quarterly Reports of Southwest Gas Corporation on Form 10-Q for the quarters ended March 31, 2023, June  30, 2023, and September 30, 2023;

• The portions of the Definitive Proxy Statement of Southwest Gas Holdings, Inc. on Schedule 14A (filed on March  21, 2023) that were specifically incorporated by reference into its Annual Report on Form 10-K for the fiscal year ended December 31, 2022;

• Current Reports of Southwest Gas Holdings, Inc. on Form 8-K/A filed on February 21, 2023 and Current Reports of Southwest Gas Holdings, Inc. on Form 8-K filed on January  13, 2023, January 20, 2023, February  14, 2023 (Item 2.01 only), March  7, 2023, March 10, 2023, March 23, 2023, April 4, 2023, April  17, 2023, April  28, 2023, May  9, 2023 (Item 5.07 only), July  19, 2023, October 25, 2023, November  6, 2023 (Items 1.01, 3.03 and 5.03 only), November  15, 2023, November 27, 2023 and November 27, 2023 (Item 5.02 only);

• Current Reports of Southwest Gas Corporation on Form 8-K filed on January 20, 2023, March 23, 2023, April 4, 2023, April 17, 2023, April  28, 2023 and July 19, 2023; and

• Any future filings that we make with the SEC under Sections 13(a), 13(c), 14 or 15(d) of the Exchange Act on or after the date of this prospectus until the termination of the offering of the securities.

You may obtain a copy of any or all of the documents referred to above which have been or may be incorporated by reference into this prospectus (excluding certain exhibits unless they are specifically incorporated by reference in any such documents) at no cost to you by writing or telephoning us at the following:

Southwest Gas Holdings, Inc.

8360 S. Durango Drive

P.O. Box 98510

Las Vegas, Nevada 89193-8510

Attention: Corporate Secretary

Telephone: (702) 876-7237

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EXPERTS

The financial statements and management’s assessment of the effectiveness of internal control over financial reporting (which is included in Management’s Report on Internal Control over Financial Reporting) incorporated in this Prospectus by reference to Southwest Gas Holdings, Inc.’s Annual Report on Form 10-K for the year ended December 31, 2022 have been so incorporated in reliance on the report of PricewaterhouseCoopers LLP, an independent registered public accounting firm, given on the authority of said firm as experts in auditing and accounting.

The financial statements incorporated in this Prospectus by reference to Southwest Gas Corporation’s Annual Report on Form 10-K for the year ended December 31, 2022 have been so incorporated in reliance on the report of PricewaterhouseCoopers LLP, an independent registered public accounting firm, given on the authority of said firm as experts in auditing and accounting.

LEGAL MATTERS

The validity of the securities to be sold hereunder will be passed upon for us by Morrison & Foerster LLP.

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PART II

Information Not Required in Prospectus

Item 14. Other Expenses of Issuance and Distribution

The following is a statement of the estimated expenses (other than underwriting discounts and commissions) to be incurred by the Registrant in connection with the issuance and distribution of the securities registered under this registration statement.

SEC registration fee	$		*
Legal fees and expenses		*	*
Blue Sky fees and expenses		*	*
Accounting fees and expenses		*	*
Printing fees		*	*
Trustee’s fees and expenses		*	*
Rating Agency Fees		*	*
Miscellaneous		*	*
Total	$		*

* The Registrant is registering an indeterminate amount of securities under this Registration Statement and in accordance with Rules 456(b) and 457(r), the Registrant is deferring payment of all of the registration fee.

** The applicable prospectus supplement will set forth the estimated aggregate amount of expenses payable in respect of any offering of securities.

Item 15. Indemnification of Directors and Officers

The articles of incorporation of Southwest Gas Corporation contain a provision which eliminates the liability of directors for monetary damages to the fullest extent permissible under California law. The General Corporation Law of California (the “Law”) (i) authorizes the elimination of liability of directors for monetary damages in an action brought by a stockholder in the right of the corporation or by the corporation for breach of a director’s duties to the corporation and its stockholders and (ii) authorizes the corporation to indemnify directors and officers for monetary damages for all acts or omissions committed by them in their respective capacities; provided, however, that liability is not limited nor may indemnification be provided (a) for acts or omissions that involve intentional misconduct or knowing and culpable violation of law, (b) for acts or omissions that a director or officer believes to be contrary to the best interests of the corporation or its stockholders or that involve the absence of good faith on the part of a director or officer seeking indemnification, (c) for any transaction from which a director or officer derives an improper personal benefit, (d) for acts or omissions that show a reckless disregard for the director’s or officer’s duty to the corporation or its stockholders in circumstances in which such person was aware, or should have been aware, in the ordinary course of performing his or her duties, of a risk of serious injury to the corporation or its stockholders, (e) for acts or omissions that constitute an unexcused pattern of inattention that amounts to an abdication of the director’s or officer’s duty to the corporation or its stockholders, and (f) for liabilities arising under Section 310 (contracts in which a director has a material financial interest) and Section 316 (certain unlawful dividends, distributions, loans and guarantees) of the Law. In addition, a corporation may not indemnify directors and officers in circumstances in which indemnification is expressly prohibited by Section 317 of the Law. The bylaws of Southwest provide that Southwest has the power to indemnify directors and officers to the fullest extent permitted under California law and its articles of incorporation.

The certificate of incorporation of Southwest Gas Holdings, Inc. contains a provision which eliminates the liability of directors for monetary damages to the fullest extent permissible under Delaware law. Section 102 of the General Corporation Law of the State of Delaware (“DGCL”) permits a corporation to eliminate the personal liability of directors of a corporation to the corporation or its stockholders for monetary damages for a breach of

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fiduciary duty as a director, except where the director breached their duty of loyalty, failed to act in good faith, engaged in intentional misconduct or knowingly violated a law, authorized the payment of a dividend or approved a stock repurchase in violation of Delaware corporate law or obtained an improper personal benefit.

The Southwest Gas Holdings, Inc. certificate of incorporation provides that, except to the extent prohibited by the DGCL, the Company’s directors shall not be liable to the Company or its stockholders for monetary damages for any breach of fiduciary duty as directors of the Company. Under the DGCL, the directors have a fiduciary duty to the Company, which is not eliminated by these provisions of the certificate of incorporation and, in appropriate circumstances, equitable remedies such as injunctive or other forms of nonmonetary relief will remain available. This provision does not affect the directors’ responsibilities under any other laws, such as the federal securities laws or state or federal environmental laws.

Section 145 of the DGCL empowers a corporation to indemnify its directors and officers and to purchase insurance with respect to liability arising out of their capacity or status as directors and officers. The DGCL provides further that the indemnification permitted thereunder shall not be deemed exclusive of any other rights to which the directors and officers may be entitled under the corporation’s bylaws, any agreement, a vote of stockholders or otherwise. The bylaws of Southwest Gas Holdings, Inc. provide that it shall indemnify, to the fullest extent permitted by the DGCL and applicable law, as may be amended, any person who was or is a party or is threatened to be made a party to or is otherwise involved in any threatened, pending or completed action, suit or proceeding, whether civil, criminal, administrative or investigative (a “proceeding”) by reason of the fact that he or she, or a person for whom he or she is the legal representative, is or was one of the Company’s directors, officers, employees or agents or is or was serving at the Company’s request as a director, officer, employee or agent of another corporation or of a partnership, joint venture, trust or other enterprise, including service with respect to employee benefit plans, against all expenses, liability and loss (including attorneys’ fees, judgments, fines, Employee Retirement Income Security Act of 1974 excise taxes or penalties, and amounts paid or to be paid in settlement, and any interest, assessments, or other charges imposed thereon, and any federal, state, local, or foreign taxes imposed as a result of the actual or deemed receipt of any indemnification payments made to such person by the Company) reasonably incurred or suffered by such person.

Each of the Registrants has entered into indemnification agreements with its directors and officers which require that such Registrant indemnify its directors and officers in all cases to the fullest extent permitted by applicable provisions of the laws of their respective states of incorporation. Each of the Registrants also maintains a directors’ and officers’ liability insurance policy insuring directors and officers of such Registrant for covered losses as defined in the policy.

Item 16. Exhibits

Exhibit No.	Description
1.1 **	Form of Debt Underwriting Agreement
1.2 **	Form of Equity Underwriting Agreement
1.3 **	Form of Warrant Underwriting Agreement
1.4 **	Form of Unit Underwriting Agreement
1.5 **	Form of Rights Underwriting Agreement
3.1	Certificate of Incorporation of Southwest Gas Holdings, Inc., a Delaware corporation. Incorporated herein by reference to Exhibit 3.1 to Form 8-K12B dated September 20, 2019, File No. 001-37976.
3.2	Amended and Restated Bylaws of Southwest Gas Holdings, Inc., effective October  18, 2021. Incorporated herein by reference to Exhibit 3.1 to Form 8-K dated October 18, 2021, File No. 001-37976.

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Exhibit No.	Description
3.3	Amendment to Amended and Restated Bylaws of Southwest Gas Holdings, Inc., effective October  20, 2023. Incorporated herein by reference to Exhibit 3.1 to Form 8-K dated October 25, 2023, File No. 001-37976.
4.1	Form of Southwest Gas Holdings, Inc. Common Stock Certificate. Incorporated herein by reference to Exhibit 4.1 to Form 8-K12B dated September 20, 2019, File No. 001-37976.
4.2 **	Form of Deposit Agreement (including the form of Depository Receipt)
4.3 **	Form Certificate of Designations of Preferred Stock
4.4	Form of Indenture between Southwest Gas Holdings, Inc. and The Bank of New York Mellon Trust Company, N.A., as Trustee (including form of Debt Security). Incorporated by reference to Exhibit 4.4 to the Registrant’s Registration Statement on Form S-3 filed on December 2, 2020 (Form No. 333-251074).
4.5 **	Form of Warrant Agreement (including form of Warrant Certificate)
4.6 **	Form of Unit Agreement (including form of Unit Certificate)
4.7 **	Form of Rights Agreement (including form of Rights Certificate)
4.8	Indenture of Trust between Clark County, Nevada and Harris Trust and Savings Bank, as Trustee, dated December  1, 1993, relating to Clark County, Nevada Industrial Development Revenue Bonds 1993 Series A. Incorporated by reference to Exhibit 4.10 to Southwest Gas Corporation’s Annual Report on Form 10-K dated March 30, 1994.
4.9	Indenture of Trust between City of Big Bear Lake and Harris Trust and Savings Bank, as Trustee, dated December  1, 1993, relating to City of Big Bear Lake Industrial Development Revenue Bonds 1993 Series A. Incorporated by reference to Exhibit 4.11 to Southwest Gas Corporation’s Annual Report on Form 10-K dated March 30, 1994.
4.10	Amended and Restated Declaration of Trust of Southwest Gas Capital I, dated October  26, 1995. Incorporated by reference to Exhibit4.06 to Southwest Gas Corporation’s Current Report on Form 8-K dated October 31, 1995.
4.11	Subordinated Debt Securities Indenture between Southwest Gas Corporation and Harris Trust and Savings Bank, dated as of October  31, 1995. Incorporated by reference to Exhibit 4.07 to Southwest Gas Corporation’s Quarterly Report on Form 10-Q dated November 9, 1995.
4.12	First Supplemental Indenture between the Company and Harris Trust and Savings Bank, dated as of October  31, 1995. Incorporated by reference to Exhibit 4.07 to Southwest Gas Corporation’s Quarterly Report on Form 10-Q dated November 9, 1995.
4.13	Indenture between Southwest Gas Corporation and Harris Trust and Savings Bank, dated as of July  15, 1996. Incorporated by reference to Exhibit 4.04 to Southwest Gas Corporation’s Current Report on Form 8-K dated July 26, 1996.
4.14	First Supplemental Indenture between Southwest Gas Corporation and Harris Trust and Savings Bank, dated as of August  1, 1996. Incorporated by reference to Exhibit 4.11 to Southwest Gas Corporation’s Current Report on Form 8-K dated August 5, 1996.
4.15	Second Supplemental Indenture between Southwest Gas Corporation and Harris Trust and Savings Bank, dated as of December  30, 1996. Incorporated by reference to Exhibit 4.04 to Southwest Gas Corporation’s Current Report on Form 8-K dated December 30,1996.
4.16	Indenture of Trust between Clark County, Nevada, and Harris Trust and Savings Bank, as Trustee, dated December  1, 1993, relating to Clark County, Nevada, Industrial Development Revenue Bonds Series 1999A. Incorporated by reference to Exhibit 4.20 to Southwest Gas Corporation’s Annual Report on Form 10-K dated March 24, 2000.

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Exhibit No.	Description
4.17	Third Supplemental Indenture between Southwest Gas Corporation and The Bank of New York, dated as of February  13, 2001. Incorporated by reference to Exhibit 4.01 to Southwest Gas Corporation’s Current Report on Form 8-K dated February 13, 2001.
4.18	Fourth Supplemental Indenture between Southwest Gas Corporation and The Bank of New York, dated as of May  6, 2002. Incorporated by reference to Exhibit 4.01 to Southwest Gas Corporation’s Current Report on Form 8-K dated May 6, 2002.
4.19	Form of Amended and Restated Trust Agreement dated as of August  25, 2003 of the Trust. Incorporated by reference to Exhibit 4.09 to Southwest Gas Corporation’s Current Report on Form 8-K dated August 22, 2003.
4.20	Form of Guarantee Agreement dated as of August  25, 2003 with respect to the Preferred Trust Securities. Incorporated by reference to Exhibit 4.13 to Southwest Gas Corporation’s Current Report on Form 8-K dated August 22, 2003.
4.21	Form of Indenture dated as of August  25, 2003 with respect to the 7.70% Junior Subordinated Debentures of the Company. Incorporated by reference to Exhibit 4.14 to Southwest Gas Corporation’s Current Report on Form 8-K dated August  22, 2003.
4.22	Indenture of Trust between Clark County, Nevada and The Bank of New York Mellon Trust Company, N.A., as Trustee, dated as of July  1, 2004, relating to Clark County, Nevada Industrial Development Revenue Bonds Series 2004A. Incorporated by reference to Exhibit 4 to Southwest Gas Corporation’s Quarterly Report on Form 10-Q dated November 8, 2004.
4.23	Indenture of Trust between Clark County, Nevada and The Bank of New York Mellon Trust Company, N.A., as Trustee, dated as of October  1, 2004, relating to Clark County, Nevada Industrial Development Revenue Bonds Series 2004B. Incorporated by reference to Exhibit 4 to Southwest Gas Corporation’s Annual Report on Form 10-K dated March 15, 2005.
4.24	Indenture of Trust between Clark County, Nevada and The Bank of New York Mellon Trust Company, N.A., as Trustee, dated as of October  1, 2005, relating to Clark County, Nevada Industrial Development Revenue Bonds Series 2005A. Incorporated by reference to Exhibit 4 to Southwest Gas Corporation’s Quarterly Report on Form 10-Q dated November 8, 2005.
4.25	Indenture of Trust between Clark County, Nevada and The Bank of New York Mellon Trust Company, N.A., as Trustee, dated as of September  1, 2006, relating to Clark County, Nevada Industrial Development Revenue Bonds Series 2006A. Incorporated by reference to Exhibit 4 to Southwest Gas Corporation’s Quarterly Report on Form 10-Q dated November 6, 2006.
4.26	Indenture of Trust between Clark County, Nevada and The Bank of New York Mellon Trust Company, N.A., as Trustee, dated as of December  1, 2009, relating to Clark County, Nevada Industrial Development Revenue Bonds Series 2009A. Incorporated by reference to Exhibit 4.27 to Southwest Gas Corporation’s Annual Report on Form 10-K dated February 26, 2010.
4.27	Indenture, dated as of March  23, 2012, by and between Southwest Gas Corporation and The Bank of New York Mellon Trust Company, N.A., as Trustee. Incorporated by reference to Exhibit 4.1 to Southwest Gas Corporation’s Current Report on Form 8-K dated March 23, 2012.
4.28	Indenture, dated as of October  4, 2013, by and between Southwest Gas Corporation and The Bank of New York Mellon Trust Company, N.A., as Trustee. Incorporated by reference to Exhibit 4.1 to Southwest Gas Corporation’s Current Report on Form 8-K dated October 4, 2013.
4.29	Indenture, dated as of September  29, 2016, by and between Southwest Gas Corporation and The Bank of New York Mellon Trust Company, N.A., as Trustee. Incorporated by reference to Exhibit 4.1 to Southwest Gas Corporation’s Current Report on Form 8-K dated September 29, 2016.

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Exhibit No.	Description
4.30	Indenture, dated as of March  15, 2018, by and between Southwest Gas Corporation and The Bank of New York Mellon Trust Company, N.A., as Trustee. Incorporated by reference to Exhibit 4.1 to Southwest Gas Corporation’s Current Report on Form 8-K dated March 15, 2018.
4.31	Indenture, dated as of March  15, 2018, by and between Southwest Gas Corporation and The Bank of New York Mellon Trust Company, N.A., as Trustee. Incorporated by reference to Exhibit 4.1 to Southwest Gas Corporation’s Current Report on Form 8-K dated March 15, 2018.
4.32	First Supplemental Indenture, dated as of March  15, 2018, by and between Southwest Gas Corporation and The Bank of New York Mellon Trust Company, N.A., as Trustee. Incorporated by reference to Exhibit 4.2 to Southwest Gas Corporation’s Current Report on Form 8-K dated March 15, 2018.
4.33	Indenture, dated as of May  31, 2019, by and between Southwest Gas Corporation and The Bank of New York Mellon Trust Company, N.A., as Trustee. Incorporated by reference to Exhibit 4.1 to Southwest Gas Corporation’s Current Report on Form 8-K dated May 31, 2019.
4.34	First Supplemental Indenture, dated as of May  31, 2019, by and between Southwest Gas Corporation and The Bank of New York Mellon Trust Company, N.A., as Trustee. Incorporated by reference to Exhibit 4.2 to Southwest Gas Corporation’s Current Report on Form 8-K dated May 31, 2019.
4.35	Indenture, dated as of June  4, 2020, by and between Southwest Gas Corporation and The Bank of New York Mellon Trust Company, N.A., as Trustee. Incorporated by reference to Exhibit 4.1 to Southwest Gas Corporation’s Current Report on Form 8-K dated June 4, 2020.
4.36	First Supplemental Indenture, dated as of June  4, 2020, by and between Southwest Gas Corporation and The Bank of New York Mellon Trust Company, N.A., as Trustee. Incorporated by reference to Exhibit 4.2 to Southwest Gas Corporation’s Current Report on Form 8-K dated June 4, 2020.
4.37	Second Supplemental Indenture, dated as of August  20, 2021, by and between Southwest Gas Corporation and The Bank of New York Mellon Trust Company, N.A., as Trustee. Incorporated by reference to Exhibit 4.1 to Southwest Gas Corporation’s Current Report on Form 8-K dated August 18, 2021.
4.38	Third Supplemental Indenture, dated as of March  22, 2022, by and between Southwest Gas Corporation and The Bank of New York Mellon Trust Company, N.A., as Trustee. Incorporated by reference to Exhibit 4.1 to Southwest Gas Corporation’s Current Report on Form 8-K dated March 17, 2022.
4.39	Fourth Supplemental Indenture, dated as of December  1, 2022, by and between Southwest Gas Corporation and The Bank of New York Mellon Trust Company, N.A., as Trustee. Incorporated by reference to Exhibit 4.1 to Southwest Gas Corporation’s Current Report on Form 8-K dated November 29, 2022.
4.40	Fifth Supplemental Indenture, dated as of March  23, 2023, by and between Southwest Gas Corporation and The Bank of New York Mellon Trust Company, N.A., as Trustee. Incorporated by reference to exhibit 4.1 to Southwest Gas Corporation’s Current Report on Form 8-K dated March 23, 2023.
4.41	Tax-Free Spin Protection Plan, dated November  5, 2023, between Southwest Gas Holdings, Inc. and Equiniti Trust Company, LLC, as Rights Agent. Incorporated by reference to Exhibit 4.1 to the Registrant’s Current Report on Form 8-K dated November  6, 2023.
4.42	Certificate of Designations of the Series A Junior Participating Preferred Stock. Incorporated by reference to Exhibit 3.1 to the Registrant’s Current Report on Form 8-K dated November 6, 2023.
5.1 *	Opinion of Morrison & Foerster LLP
23.1 *	Consent of Morrison & Foerster LLP (included in Exhibit 5.1)

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Exhibit No.	Description
23.2 *	Consent of PricewaterhouseCoopers LLP for Southwest Gas Holdings, Inc.
23.3 *	Consent of PricewaterhouseCoopers LLP for Southwest Gas Corporation
24.1 *	Powers of Attorney for Southwest Gas Holdings, Inc.
24.2 *	Powers of Attorney for Southwest Gas Corporation
25.1 *	Statement of Eligibility under the Trust Indenture Act of 1939, as amended on Form T-1 of The Bank of New York Mellon Trust Company, N.A. for the form of Indenture of Southwest Gas Holdings, Inc.
25.2 *	Statement of Eligibility under the Trust Indenture Act of 1939, as amended on Form T-1 of The Bank of New York Mellon Trust Company, N.A. for the Indenture of Southwest Gas Corporation dated June 4, 2020.
107    *	Filing Fee Table

* Filed herewith.

** To be filed as an exhibit to a Current Report on Form 8-K or other document incorporated by reference herein or to a post-effective amendment hereto, if applicable.

Item 17. Undertakings

Each undersigned Registrant hereby undertakes:

(1) To file, during any period in which offers or sales are being made, a post-effective amendment to this registration statement:

(i) To include any prospectus required by Section 10(a)(3) of the Securities Act;

(ii) To reflect in the prospectus any facts or events arising after the effective date of the registration statement (or the most recent post-effective amendment thereof) which, individually or in the aggregate, represent a fundamental change in the information set forth in the registration statement. Notwithstanding the foregoing, any increase or decrease in volume of securities offered (if the total dollar value of securities offered would not exceed that which was registered) and any deviation from the low or high end of the estimated maximum offering range may be reflected in the form of prospectus filed with the SEC pursuant to Rule 424(b) if, in the aggregate, the changes in volume and price represent no more than a 20 percent change in the maximum aggregate offering price set forth in the “Calculation of Registration Fee” table in the effective registration statement;

(iii) To include any material information with respect to the plan of distribution not previously disclosed in the registration statement or any material change to such information in the registration statement; provided, however, that paragraphs (1)(i), (1)(ii) and (1)(iii) above do not apply if the information required to be included in a post-effective amendment by those paragraphs is contained in reports filed with or furnished to the SEC by the Registrant pursuant to Section 13 or Section 15(d) of the Exchange Act that are incorporated by reference in the registration statement, or is contained in a form of prospectus filed pursuant to Rule 424(b) that is part of the registration statement.

(2) That, for the purpose of determining any liability under the Securities Act, each such post-effective amendment shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof.

(3) To remove from registration by means of a post-effective amendment any of the securities being registered which remain unsold at the termination of the offering.

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(4) That, for the purpose of determining liability under the Securities Act to any purchaser:

(i) Each prospectus filed by the Registrant pursuant to Rule 424(b)(3) shall be deemed to be part of the registration statement as of the date the filed prospectus was deemed part of and included in the registration statement; and

(ii) Each prospectus required to be filed pursuant to Rule 424(b)(2), (b)(5) or (b)(7) as part of a registration statement in reliance on Rule 430B relating to an offering made pursuant to Rule 415(a)(1)(i), (vii) or (x) for the purpose of providing the information required by Section 10(a) of the Securities Act shall be deemed to be part of and included in the registration statement as of the earlier of the date such form of prospectus is first used after effectiveness or the date of the first contract of sale of securities in the offering described in the prospectus. As provided in Rule 430B, for liability purposes of the issuer and any person that is at that date an underwriter, such date shall be deemed to be a new effective date of the registration statement relating to the securities in the registration statement to which the prospectus relates, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof. Provided, however, that no statement made in a registration statement or prospectus that is part of the registration statement or made in a document incorporated or deemed incorporated by reference into the registration statement or prospectus that is part of the registration statement will, as to a purchaser with a time of contract of sale prior to such effective date, supersede or modify any statement that was made in the registration statement or prospectus that was part of the registration statement or made in any such document immediately prior to such effective date.

(5) That, for the purpose of determining liability of the Registrant under the Securities Act to any purchaser in the initial distribution of the securities, the undersigned Registrant undertakes that in a primary offering of securities of the undersigned Registrant pursuant to this registration statement, regardless of the underwriting method used to sell the securities to the purchaser, if the securities are offered or sold to such purchaser by means of any of the following communications, the undersigned Registrant will be a seller to the purchaser and will be considered to offer or sell such securities to such purchaser:

(i) Any preliminary prospectus or prospectus of the undersigned Registrant relating to the offering required to be filed pursuant to Rule 424;

(ii) Any free writing prospectus relating to the offering prepared by or on behalf of the undersigned Registrant or used or referred to by the undersigned Registrant;

(iii) The portion of any other free writing prospectus relating to the offering containing material information about the undersigned Registrant or its securities provided by or on behalf of the undersigned Registrant; and

(iv) Any other communication that is an offer in the offering made by the undersigned Registrant to the purchaser.

(6) That, for purposes of determining any liability under the Securities Act, each filing of the Registrant’s annual report pursuant to Section 13(a) or 15(d) of the Exchange Act (and, where applicable, each filing of an employee benefit plan’s annual report pursuant to Section 15(d) of the Exchange Act) that is incorporated by reference in the registration statement shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof.

(7) That, insofar as indemnification for liabilities arising under the Securities Act may be permitted to directors, officers and controlling persons of the Registrant pursuant to the foregoing provisions, or otherwise, the Registrant has been advised that in the opinion of the SEC such indemnification is against public policy as expressed in the Securities Act and is, therefore, unenforceable. In the event that a claim for indemnification against such liabilities (other than the payment by the Registrant of expenses incurred or paid by a director,

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officer or controlling person of the Registrant in the successful defense of any action, suit or proceeding) is asserted by such director, officer or controlling person in connection with the securities being registered, the Registrant will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the question whether such indemnification by it is against public policy as expressed in the Securities Act and will be governed by the final adjudication of such issue.

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SIGNATURES

Pursuant to the requirements of the Securities Act, the Registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-3 and has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Las Vegas, State of Nevada, on November 28, 2023.

SOUTHWEST GAS HOLDINGS, INC.
By:	/s/ Karen S. Haller
Name:	Karen S. Haller
Title:	President and Chief Executive Officer

Pursuant to the requirements of the Securities Act, this Registration Statement has been signed below by the following persons in the capacities and on the date indicated.

Signature	Title	Date
/s/ Karen S. Haller Karen S. Haller	Director, President and Chief Executive Officer (Principal Executive Officer)	November 28, 2023
/s/ Robert J. Stefani Robert J. Stefani	Senior Vice President/ Chief Financial Officer (Principal Financial Officer)	November 28, 2023
/s/ Lori L. Colvin Lori L. Colvin	Vice President/Controller/Chief Accounting Officer (Principal Accounting Officer)	November 28, 2023
/s/ E. Renae Conley* E. Renae Conley	Director	November 28, 2023
/s/ Andrew W. Evans* Andrew W. Evans	Director	November 28, 2023
/s/ Jane Lewis-Raymond* Jane Lewis-Raymond	Director	November 28, 2023
/s/ Henry P. Linginfelter* Henry P. Linginfelter	Director	November 28, 2023
/s/ Anne L. Mariucci* Anne L. Mariucci	Director	November 28, 2023
/s/ Carlos A. Ruisanchez* Carlos A. Ruisanchez	Director	November 28, 2023
/s/ Ruby Sharma* Ruby Sharma	Director	November 28, 2023
/s/ Andrew J. Teno* Andrew J. Teno	Director	November 28, 2023
/s/ A. Randall Thoman* A. Randall Thoman	Director	November 28, 2023
/s/ Leslie T. Thornton* Leslie T. Thornton	Director	November 28, 2023

By:	*By: /s/ Robert J. Stefani
	Robert J. Stefani
	Attorney-in-Fact

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SIGNATURES

Pursuant to the requirements of the Securities Act, the Registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-3 and has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Las Vegas, State of Nevada, on November 28, 2023.

SOUTHWEST GAS CORPORATION
By:	/s/ Karen S. Haller
Name:	Karen S. Haller
Title:	Chief Executive Officer

Pursuant to the requirements of the Securities Act, this Registration Statement has been signed below by the following persons in the capacities and on the date indicated.

Signature	Title	Date
/s/ Karen S. Haller Karen S. Haller	Director, Chief Executive Officer (Principal Executive Officer)	November 28, 2023
/s/ Robert J. Stefani Robert J. Stefani	Director, Senior Vice President/ Chief Financial Officer (Principal Financial Officer)	November 28, 2023
/s/ Lori L. Colvin Lori L. Colvin	Vice President/Controller/Chief Accounting Officer (Principal Accounting Officer)	November 28, 2023
/s/ E. Renae Conley* E. Renae Conley	Director	November 28, 2023

By:	*By: /s/ Robert J. Stefani
	Robert J. Stefani
	Attorney-in-Fact

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