UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
Form 10-Q
QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the quarterly period ended March 31, 20212022
OR
TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
    Commission    
    File Number    
  Exact name of registrant as specified in its charter and
principal office address and telephone number
State of
Incorporation
I.R.S.
Employer Identification No.
001-37976 Southwest Gas Holdings, Inc.Delaware81-3881866
8360 S. Durango Drive
Post Office Box 98510
Las Vegas,Nevada89193-8510
(702)876-7237
1-7850Southwest Gas CorporationCalifornia88-0085720
8360 S. Durango Drive
Post Office Box 98510
Las Vegas,Nevada89193-8510
(702)876-7237
Securities registered pursuant to Section 12(b) of the Act:
Title of each classTrading SymbolName of each exchange on which registered
Southwest Gas Holdings, Inc. Common Stock, $1 Par ValueSWXNew York Stock Exchange
Preferred Stock Purchase RightsN/ANew York Stock Exchange
Indicate by check mark whether each registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that each registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes      No  
Indicate by check mark whether each registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that each registrant was required to submit such files).    Yes      No  
Indicate by check mark whether each 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,” “non-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 13(a) of the Exchange 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 13(a) of the Exchange Act.  
Indicate by check mark whether each registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    Yes      No  
Indicate the number of shares outstanding of each of the issuer’s classes of common stock as of the latest practicable date.
Southwest Gas Holdings, Inc. Common Stock, $1 Par Value, 58,001,39666,852,050 shares as of April 30, 2021.29, 2022.
All of the outstanding shares of common stock ($1 par value) of Southwest Gas Corporation were held by Southwest Gas Holdings, Inc. as of April 30, 2021.29, 2022.
SOUTHWEST GAS CORPORATION MEETS THE CONDITIONS SET FORTH IN GENERAL INSTRUCTION (H)(1)(a) and (b) OF FORM 10-Q AND IS THEREFORE FILING THIS REPORT WITH THE REDUCED DISCLOSURE FORMAT AS PERMITTED BY GENERAL INSTRUCTION H(2).


SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  March 31, 20212022

FILING FORMAT
This quarterly report on Form 10-Q is a combined report being filed by two separate registrants: Southwest Gas Holdings, Inc. and Southwest Gas Corporation. Except where the content clearly indicates otherwise, any reference in the report to “we,” “us” or “our” is to the holding company or the consolidated entity of Southwest Gas Holdings, Inc. and all of its subsidiaries, including Southwest Gas Corporation, which is a distinct registrant that is a wholly owned subsidiary of Southwest Gas Holdings, Inc. Information contained herein relating to any individual company is filed by such company on its own behalf. Each company makes representations only as to itself and makes no other representation whatsoever as to any other company.
Part I—Financial information in this Quarterly Report on Form 10-Q includes separate financial statements (i.e., balance sheets, statements of income, statements of comprehensive income, statements of cash flows, and statements of equity) for Southwest Gas Holdings, Inc. and Southwest Gas Corporation, in that order. The Notes to the Condensed Consolidated Financial Statements are presented on a combined basis for both entities. All Items other than Part I – Item 1 are combined for the reporting companies.

2

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  March 31, 20212022

PART I - FINANCIAL INFORMATION
ITEM 1. FINANCIAL STATEMENTS
SOUTHWEST GAS HOLDINGS, INC. AND SUBSIDIARIES
CONDENSED CONSOLIDATED BALANCE SHEETS
(Thousands of dollars, except par value)
(Unaudited)
March 31, 2021December 31, 2020March 31, 2022December 31, 2021
ASSETSASSETSASSETS
Utility plant:
Regulated operations plant:Regulated operations plant:
Gas plantGas plant$8,479,295 $8,384,000 Gas plant$10,891,910 $10,789,690 
Less: accumulated depreciationLess: accumulated depreciation(2,453,924)(2,419,348)Less: accumulated depreciation(3,443,053)(3,397,736)
Construction work in progressConstruction work in progress215,395 211,429 Construction work in progress216,262 202,068 
Net utility plant6,240,766 6,176,081 
Other property and investments842,672 834,245 
Net regulated operations plantNet regulated operations plant7,665,119 7,594,022 
Other property and investments, netOther property and investments, net1,313,291 1,316,479 
Current assets:Current assets:Current assets:
Cash and cash equivalentsCash and cash equivalents92,345 83,352 Cash and cash equivalents624,666 222,697 
Accounts receivable, net of allowancesAccounts receivable, net of allowances479,184 522,172 Accounts receivable, net of allowances755,947 707,127 
Accrued utility revenueAccrued utility revenue50,500 82,400 Accrued utility revenue52,000 84,900 
Income taxes receivable, netIncome taxes receivable, net6,523 10,884 Income taxes receivable, net16,937 16,816 
Deferred purchased gas costsDeferred purchased gas costs238,886 2,053 Deferred purchased gas costs367,954 291,145 
Prepaid and other current assetsPrepaid and other current assets133,466 170,152 Prepaid and other current assets229,072 292,082 
Total current assetsTotal current assets1,000,904 871,013 Total current assets2,046,576 1,614,767 
Noncurrent assets:Noncurrent assets:Noncurrent assets:
GoodwillGoodwill346,553 345,184 Goodwill1,773,671 1,781,332 
Deferred income taxesDeferred income taxes563 455 Deferred income taxes44 121 
Deferred charges and other assetsDeferred charges and other assets497,187 508,875 Deferred charges and other assets450,786 458,536 
Total noncurrent assetsTotal noncurrent assets844,303 854,514 Total noncurrent assets2,224,501 2,239,989 
Total assetsTotal assets$8,928,645 $8,735,853 Total assets$13,249,487 $12,765,257 
CAPITALIZATION AND LIABILITIESCAPITALIZATION AND LIABILITIESCAPITALIZATION AND LIABILITIES
Capitalization:Capitalization:Capitalization:
Common stock, $1 par (authorized - 120,000,000 shares; issued and outstanding - 57,995,563 and 57,192,925 shares)$59,625 $58,823 
Common stock, $1 par (authorized - 120,000,000 shares; issued and outstanding - 66,849,225 and 60,422,081 shares)Common stock, $1 par (authorized - 120,000,000 shares; issued and outstanding - 66,849,225 and 60,422,081 shares)$68,479 $62,052 
Additional paid-in capital Additional paid-in capital1,660,108 1,609,155  Additional paid-in capital2,273,837 1,824,216 
Accumulated other comprehensive loss, netAccumulated other comprehensive loss, net(58,388)(61,003)Accumulated other comprehensive loss, net(43,972)(46,761)
Retained earningsRetained earnings1,112,377 1,067,978 Retained earnings1,190,738 1,114,313 
Total equityTotal equity2,773,722 2,674,953 Total equity3,489,082 2,953,820 
Redeemable noncontrolling interest205,286 165,716 
Redeemable noncontrolling interestsRedeemable noncontrolling interests135,984 196,717 
Long-term debt, less current maturitiesLong-term debt, less current maturities2,696,570 2,732,200 Long-term debt, less current maturities4,559,758 4,115,684 
Total capitalizationTotal capitalization5,675,578 5,572,869 Total capitalization8,184,824 7,266,221 
Current liabilities:Current liabilities:Current liabilities:
Current maturities of long-term debt Current maturities of long-term debt67,334 40,433  Current maturities of long-term debt291,069 297,324 
Short-term debtShort-term debt310,000 107,000 Short-term debt1,474,000 1,909,000 
Accounts payableAccounts payable182,805 231,301 Accounts payable256,606 353,365 
Customer depositsCustomer deposits67,121 67,920 Customer deposits57,620 59,327 
Income taxes payable, netIncome taxes payable, net19,356 12,556 Income taxes payable, net10,416 6,734 
Accrued general taxesAccrued general taxes72,103 48,640 Accrued general taxes83,897 53,473 
Accrued interestAccrued interest34,571 20,536 Accrued interest42,421 30,964 
Deferred purchased gas costsDeferred purchased gas costs54,636 Deferred purchased gas costs297 5,736 
Other current liabilitiesOther current liabilities282,745 328,945 Other current liabilities413,872 396,126 
Total current liabilitiesTotal current liabilities1,036,035 911,967 Total current liabilities2,630,198 3,112,049 
Deferred income taxes and other credits:Deferred income taxes and other credits:Deferred income taxes and other credits:
Deferred income taxes and investment tax credits, netDeferred income taxes and investment tax credits, net671,574 647,453 Deferred income taxes and investment tax credits, net803,771 768,868 
Accumulated removal costsAccumulated removal costs407,000 404,000 Accumulated removal costs488,908 480,583 
Other deferred credits and other long-term liabilitiesOther deferred credits and other long-term liabilities1,138,458 1,199,564 Other deferred credits and other long-term liabilities1,141,786 1,137,536 
Total deferred income taxes and other creditsTotal deferred income taxes and other credits2,217,032 2,251,017 Total deferred income taxes and other credits2,434,465 2,386,987 
Total capitalization and liabilitiesTotal capitalization and liabilities$8,928,645 $8,735,853 Total capitalization and liabilities$13,249,487 $12,765,257 
The accompanying notes are an integral part of these statements.
3

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  March 31, 20212022

SOUTHWEST GAS HOLDINGS, INC. AND SUBSIDIARIES
CONDENSED CONSOLIDATED STATEMENTS OF INCOME
(In thousands, except per share amounts)
(Unaudited)
Three Months Ended
March 31,
Twelve Months Ended
March 31,
Three Months Ended
March 31,
Twelve Months Ended
March 31,
2021202020212020 2022202120222021
Operating revenues:Operating revenues:Operating revenues:
Gas operating revenues$521,932 $502,827 $1,369,690 $1,351,089 
Regulated operations revenuesRegulated operations revenues$743,532 $521,932 $1,743,390 $1,369,690 
Utility infrastructure services revenuesUtility infrastructure services revenues363,975 333,493 1,978,770 1,771,609 Utility infrastructure services revenues523,877 363,975 2,318,563 1,978,770 
Total operating revenuesTotal operating revenues885,907 836,320 3,348,460 3,122,698 Total operating revenues1,267,409 885,907 4,061,953 3,348,460 
Operating expenses:Operating expenses:Operating expenses:
Net cost of gas soldNet cost of gas sold156,021 160,821 338,037 353,381 Net cost of gas sold298,918 156,021 573,804 338,037 
Operations and maintenanceOperations and maintenance106,690 103,781 411,025 421,686 Operations and maintenance149,303 106,690 515,759 411,025 
Depreciation and amortizationDepreciation and amortization93,442 87,653 337,816 313,351 Depreciation and amortization122,646 93,442 400,245 337,816 
Taxes other than income taxesTaxes other than income taxes20,687 16,378 67,769 62,500 Taxes other than income taxes24,816 20,687 84,472 67,769 
Utility infrastructure services expensesUtility infrastructure services expenses335,614 319,314 1,745,729 1,592,076 Utility infrastructure services expenses503,232 335,614 2,123,085 1,745,729 
Total operating expensesTotal operating expenses712,454 687,947 2,900,376 2,742,994 Total operating expenses1,098,915 712,454 3,697,365 2,900,376 
Operating incomeOperating income173,453 148,373 448,084 379,704 Operating income168,494 173,453 364,588 448,084 
Other income and (expenses):Other income and (expenses):Other income and (expenses):
Net interest deductionsNet interest deductions(23,964)(28,380)(107,061)(111,209)Net interest deductions(48,363)(23,964)(143,597)(107,061)
Other income (deductions)Other income (deductions)448 (20,770)14,429 (17,524)Other income (deductions)1,244 448 (2,703)14,429 
Total other income and (expenses)Total other income and (expenses)(23,516)(49,150)(92,632)(128,733)Total other income and (expenses)(47,119)(23,516)(146,300)(92,632)
Income before income taxesIncome before income taxes149,937 99,223 355,452 250,971 Income before income taxes121,375 149,937 218,288 355,452 
Income tax expenseIncome tax expense31,092 26,218 70,627 56,703 Income tax expense24,125 31,092 32,681 70,627 
Net incomeNet income118,845 73,005 284,825 194,268 Net income97,250 118,845 185,607 284,825 
Net income attributable to noncontrolling interest1,552 463 7,750 2,599 
Net income attributable to noncontrolling interestsNet income attributable to noncontrolling interests1,072 1,552 5,943 7,750 
Net income attributable to Southwest Gas Holdings, Inc.Net income attributable to Southwest Gas Holdings, Inc.$117,293 $72,542 $277,075 $191,669 Net income attributable to Southwest Gas Holdings, Inc.$96,178 $117,293 $179,664 $277,075 
Earnings per share:Earnings per share:Earnings per share:
BasicBasic$2.04 $1.31 $4.90 $3.50 Basic$1.58 $2.04 $3.00 $4.90 
DilutedDiluted$2.03 $1.31 $4.89 $3.50 Diluted$1.58 $2.03 $2.99 $4.89 
Weighted average shares:Weighted average shares:Weighted average shares:
BasicBasic57,600 55,310 56,564 54,726 Basic60,737 57,600 59,919 56,564 
DilutedDiluted57,679 55,363 56,649 54,792 Diluted60,854 57,679 60,044 56,649 
The accompanying notes are an integral part of these statements.

4

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  March 31, 20212022

SOUTHWEST GAS HOLDINGS, INC. AND SUBSIDIARIES
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
(Thousands of dollars)
(Unaudited)
Three Months Ended
March 31,
Twelve Months Ended
March 31,
Three Months Ended
March 31,
Twelve Months Ended
March 31,
2021202020212020 2022202120222021
Net incomeNet income$118,845 $73,005 $284,825 $194,268 Net income$97,250 $118,845 $185,607 $284,825 
Other comprehensive income (loss), net of taxOther comprehensive income (loss), net of taxOther comprehensive income (loss), net of tax
Defined benefit pension plans:Defined benefit pension plans:Defined benefit pension plans:
Net actuarial loss(43,730)(54,026)
Net actuarial gain (loss)Net actuarial gain (loss)— — 44,974 (43,730)
Amortization of prior service costAmortization of prior service cost182 220 840 945 Amortization of prior service cost33 182 580 840 
Amortization of net actuarial lossAmortization of net actuarial loss8,474 7,188 30,037 20,513 Amortization of net actuarial loss6,616 8,474 32,036 30,037 
Prior service cost(1,426)
Regulatory adjustmentRegulatory adjustment(7,277)(6,380)4,753 25,760 Regulatory adjustment(5,523)(7,277)(65,273)4,753 
Net defined benefit pension plansNet defined benefit pension plans1,379 1,028 (8,100)(8,234)Net defined benefit pension plans1,126 1,379 12,317 (8,100)
Forward-starting interest rate swaps (“FSIRS”):Forward-starting interest rate swaps (“FSIRS”):Forward-starting interest rate swaps (“FSIRS”):
Amounts reclassified into net incomeAmounts reclassified into net income413 636 2,244 2,542 Amounts reclassified into net income416 413 1,655 2,244 
Net forward-starting interest rate swapsNet forward-starting interest rate swaps413 636 2,244 2,542 Net forward-starting interest rate swaps416 413 1,655 2,244 
Foreign currency translation adjustmentsForeign currency translation adjustments823 (4,005)6,541 (2,758)Foreign currency translation adjustments1,247 823 444 6,541 
Total other comprehensive income (loss), net of tax2,615 (2,341)685 (8,450)
Total other comprehensive income, net of taxTotal other comprehensive income, net of tax2,789 2,615 14,416 685 
Comprehensive incomeComprehensive income121,460 70,664 285,510 185,818 Comprehensive income100,039 121,460 200,023 285,510 
Comprehensive income attributable to noncontrolling interest1,552 463 7,750 2,599 
Comprehensive income attributable to noncontrolling interestsComprehensive income attributable to noncontrolling interests1,072 1,552 5,943 7,750 
Comprehensive income attributable to Southwest Gas Holdings, Inc.Comprehensive income attributable to Southwest Gas Holdings, Inc.$119,908 $70,201 $277,760 $183,219 Comprehensive income attributable to Southwest Gas Holdings, Inc.$98,967 $119,908 $194,080 $277,760 
The accompanying notes are an integral part of these statements.

5

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  March 31, 20212022

SOUTHWEST GAS HOLDINGS, INC. AND SUBSIDIARIES
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
(Thousands of dollars)
(Unaudited)
Three Months Ended
March 31,
Twelve Months Ended
March 31,
Three Months Ended
March 31,
Twelve Months Ended
March 31,
2021202020212020 2022202120222021
CASH FLOW FROM OPERATING ACTIVITIES:CASH FLOW FROM OPERATING ACTIVITIES:CASH FLOW FROM OPERATING ACTIVITIES:
Net incomeNet income$118,845 $73,005 $284,825 $194,268 Net income$97,250 $118,845 $185,607 $284,825 
Adjustments to reconcile net income to net cash provided by (used in) operating activities:Adjustments to reconcile net income to net cash provided by (used in) operating activities:Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortizationDepreciation and amortization93,442 87,653 337,816 313,351 Depreciation and amortization122,646 93,442 400,245 337,816 
Deferred income taxesDeferred income taxes23,326 25,309 48,734 54,548 Deferred income taxes32,346 23,326 70,232 48,734 
Changes in current assets and liabilities:Changes in current assets and liabilities:Changes in current assets and liabilities:
Accounts receivable, net of allowancesAccounts receivable, net of allowances42,892 45,837 (51,717)7,154 Accounts receivable, net of allowances(44,971)42,892 (139,417)(51,717)
Accrued utility revenueAccrued utility revenue31,900 31,000 (2,400)(1,100)Accrued utility revenue32,900 31,900 (1,500)(2,400)
Deferred purchased gas costsDeferred purchased gas costs(291,469)10,155 (265,385)19,527 Deferred purchased gas costs(82,248)(291,469)(134,507)(265,385)
Accounts payableAccounts payable(41,147)(60,723)11,882 (49,945)Accounts payable(82,952)(41,147)8,621 11,882 
Accrued taxesAccrued taxes34,636 30,377 19,430 10,220 Accrued taxes33,964 34,636 (7,397)19,430 
Other current assets and liabilitiesOther current assets and liabilities(5,255)76,453 25,719 102,742 Other current assets and liabilities79,680 (5,255)(4,274)25,719 
Gains on sale of equipment(1,509)(28)(3,329)(5,268)
Gains on sale of property and equipmentGains on sale of property and equipment(1,916)(1,509)(7,313)(3,329)
Changes in undistributed stock compensationChanges in undistributed stock compensation3,658 2,816 7,956 6,524 Changes in undistributed stock compensation4,180 3,658 9,816 7,956 
Equity AFUDCEquity AFUDC(981)(1,061)(4,644)(4,262)Equity AFUDC(258)(981)723 (4,644)
Changes in deferred charges and other assetsChanges in deferred charges and other assets(10,379)6,495 (49,465)1,772 Changes in deferred charges and other assets(297)(10,379)(3,459)(49,465)
Changes in other liabilities and deferred creditsChanges in other liabilities and deferred credits(50,416)(55,722)(57,365)(65,704)Changes in other liabilities and deferred credits(3,704)(50,416)(26,917)(57,365)
Net cash provided by (used in) operating activitiesNet cash provided by (used in) operating activities(52,457)271,566 302,057 583,827 Net cash provided by (used in) operating activities186,620 (52,457)350,460 302,057 
CASH FLOW FROM INVESTING ACTIVITIES:CASH FLOW FROM INVESTING ACTIVITIES:CASH FLOW FROM INVESTING ACTIVITIES:
Construction expenditures and property additionsConstruction expenditures and property additions(152,709)(210,655)(767,159)(938,141)Construction expenditures and property additions(162,796)(152,709)(725,713)(767,159)
Acquisition of businesses, net of cash acquiredAcquisition of businesses, net of cash acquired(47,638)Acquisition of businesses, net of cash acquired— — (2,354,260)— 
Changes in customer advancesChanges in customer advances4,286 5,434 12,885 21,357 Changes in customer advances7,693 4,286 19,381 12,885 
OtherOther3,563 4,430 8,136 19,321 Other893 3,563 15,586 8,136 
Net cash used in investing activitiesNet cash used in investing activities(144,860)(200,791)(746,138)(945,101)Net cash used in investing activities(154,210)(144,860)(3,045,006)(746,138)
CASH FLOW FROM FINANCING ACTIVITIES:CASH FLOW FROM FINANCING ACTIVITIES:CASH FLOW FROM FINANCING ACTIVITIES:
Issuance of common stock, netIssuance of common stock, net48,990 3,148 185,087 135,215 Issuance of common stock, net453,495 48,990 618,146 185,087 
Centuri distribution to redeemable noncontrolling interestCenturi distribution to redeemable noncontrolling interest(39,649)— (39,649)— 
Dividends paidDividends paid(32,619)(30,006)(128,117)(118,531)Dividends paid(35,970)(32,619)(141,573)(128,117)
Issuance of long-term debt, netIssuance of long-term debt, net10,659 99,978 573,058 601,908 Issuance of long-term debt, net709,927 10,659 2,359,964 573,058 
Retirement of long-term debtRetirement of long-term debt(21,228)(75,168)(302,466)(257,797)Retirement of long-term debt(143,453)(21,228)(574,889)(302,466)
Change in credit facility and commercial paperChange in credit facility and commercial paper(130,000)— (150,000)— 
Change in short-term debtChange in short-term debt203,000 (54,000)153,000 (31,000)Change in short-term debt(435,000)203,000 (686,000)153,000 
Issuance of short-term debtIssuance of short-term debt— — 1,850,000 — 
Withholding remittance - share-based compensationWithholding remittance - share-based compensation(1,242)(2,736)(1,242)(2,756)Withholding remittance - share-based compensation(1,978)(1,242)(2,000)(1,242)
OtherOther(1,353)(250)(4,505)(1,615)Other(7,898)(1,353)(7,274)(4,505)
Net cash provided by (used in) financing activities206,207 (59,034)474,815 325,424 
Net cash provided by financing activitiesNet cash provided by financing activities369,474 206,207 3,226,725 474,815 
Effects of currency translation on cash and cash equivalentsEffects of currency translation on cash and cash equivalents103 (315)646 (222)Effects of currency translation on cash and cash equivalents85 103 142 646 
Change in cash and cash equivalentsChange in cash and cash equivalents8,993 11,426 31,380 (36,072)Change in cash and cash equivalents401,969 8,993 532,321 31,380 
Cash and cash equivalents at beginning of periodCash and cash equivalents at beginning of period83,352 49,539 60,965 97,037 Cash and cash equivalents at beginning of period222,697 83,352 92,345 60,965 
Cash and cash equivalents at end of periodCash and cash equivalents at end of period$92,345 $60,965 $92,345 $60,965 Cash and cash equivalents at end of period$624,666 $92,345 $624,666 $92,345 
SUPPLEMENTAL INFORMATION:SUPPLEMENTAL INFORMATION:SUPPLEMENTAL INFORMATION:
Interest paid, net of amounts capitalizedInterest paid, net of amounts capitalized$8,303 $13,073 $100,412 $99,481 Interest paid, net of amounts capitalized$35,262 $8,303 $131,311 $100,412 
Income taxes paid (received), netIncome taxes paid (received), net$1,651 $(20,064)$10,764 $(17,766)Income taxes paid (received), net$1,408 $1,651 $3,965 $10,764 
The accompanying notes are an integral part of these statements.
6

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  March 31, 20212022

SOUTHWEST GAS HOLDINGS, INC. AND SUBSIDIARIES
CONDENSED CONSOLIDATED STATEMENTS OF EQUITY
(In thousands, except per share amounts)
(Unaudited)
Three Months Ended
March 31,
Three Months Ended
March 31,
2021202020222021
Common stock sharesCommon stock sharesCommon stock shares
Beginning balances57,193 55,007 Beginning balances60,422 57,193 
Common stock issuances802 119 Common stock issuances6,427 802 
Ending balances57,995 55,126 Ending balances66,849 57,995 
Common stock amountCommon stock amountCommon stock amount
Beginning balances$58,823 $56,637 Beginning balances$62,052 $58,823 
Common stock issuances802 119 Common stock issuances6,427 802 
Ending balances59,625 56,756 Ending balances68,479 59,625 
Additional paid-in capitalAdditional paid-in capitalAdditional paid-in capital
Beginning balances1,609,155 1,466,937 Beginning balances1,824,216 1,609,155 
Common stock issuances50,953 3,474 Common stock issuances449,621 50,953 
Ending balances1,660,108 1,470,411 Ending balances2,273,837 1,660,108 
Accumulated other comprehensive lossAccumulated other comprehensive lossAccumulated other comprehensive loss
Beginning balances(61,003)(56,732)Beginning balances(46,761)(61,003)
Foreign currency exchange translation adjustment823 (4,005)Foreign currency exchange translation adjustment1,247 823 
Net actuarial gain arising during period, less amortization of unamortized benefit plan cost, net of tax1,379 1,028 Net actuarial gain arising during period, less amortization of unamortized benefit plan cost, net of tax1,126 1,379 
FSIRS amounts reclassified to net income, net of tax413 636 FSIRS amounts reclassified to net income, net of tax416 413 
Ending balances(43,972)(58,388)
Ending balances(58,388)(59,073)
Retained earningsRetained earningsRetained earnings
Beginning balances1,067,978 1,039,072 Beginning balances1,114,313 1,067,978 
Net income117,293 72,542 Net income96,178 117,293 
Dividends declared(34,876)(31,813)Dividends declared(41,909)(34,876)
Redemption value adjustments(38,018)Redemption value adjustments22,156 (38,018)
Ending balances1,112,377 1,079,801 Ending balances1,190,738 1,112,377 
Total equity ending balancesTotal equity ending balances$2,773,722 $2,547,895 Total equity ending balances$3,489,082 $2,773,722 
Dividends declared per common shareDividends declared per common share$0.595 $0.57 Dividends declared per common share$0.62 $0.595 
The accompanying notes are an integral part of these statements.
7

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  March 31, 20212022

SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
CONDENSED CONSOLIDATED BALANCE SHEETS
(Thousands of dollars)
(Unaudited)
March 31, 2021December 31, 2020March 31, 2022December 31, 2021
ASSETSASSETSASSETS
Utility plant:
Regulated operations plant:Regulated operations plant:
Gas plantGas plant$8,479,295 $8,384,000 Gas plant$8,997,234 $8,901,575 
Less: accumulated depreciationLess: accumulated depreciation(2,453,924)(2,419,348)Less: accumulated depreciation(2,572,184)(2,538,508)
Construction work in progressConstruction work in progress215,395 211,429 Construction work in progress196,574 183,485 
Net utility plant6,240,766 6,176,081 
Other property and investments146,338 143,611 
Net regulated operations plantNet regulated operations plant6,621,624 6,546,552 
Other property and investments, netOther property and investments, net151,168 153,093 
Current assets:Current assets:Current assets:
Cash and cash equivalentsCash and cash equivalents49,795 41,070 Cash and cash equivalents475,876 38,691 
Accounts receivable, net of allowanceAccounts receivable, net of allowance174,492 146,861 Accounts receivable, net of allowance224,885 169,666 
Accrued utility revenueAccrued utility revenue50,500 82,400 Accrued utility revenue52,000 84,900 
Income taxes receivable, netIncome taxes receivable, net11,155 Income taxes receivable, net5,351 7,826 
Deferred purchased gas costsDeferred purchased gas costs238,886 2,053 Deferred purchased gas costs367,954 291,145 
Receivable from parentReceivable from parent271 1,031 
Prepaid and other current assetsPrepaid and other current assets118,397 152,748 Prepaid and other current assets180,640 242,243 
Total current assetsTotal current assets632,070 436,287 Total current assets1,306,977 835,502 
Noncurrent assets:Noncurrent assets:Noncurrent assets:
GoodwillGoodwill10,095 10,095 Goodwill10,095 10,095 
Deferred charges and other assetsDeferred charges and other assets481,184 490,562 Deferred charges and other assets394,454 405,021 
Total noncurrent assetsTotal noncurrent assets491,279 500,657 Total noncurrent assets404,549 415,116 
Total assetsTotal assets$7,510,453 $7,256,636 Total assets$8,484,318 $7,950,263 
CAPITALIZATION AND LIABILITIESCAPITALIZATION AND LIABILITIESCAPITALIZATION AND LIABILITIES
Capitalization:Capitalization:Capitalization:
Common stockCommon stock$49,112 $49,112 Common stock$49,112 $49,112 
Additional paid-in capital Additional paid-in capital1,458,344 1,410,345  Additional paid-in capital1,620,616 1,618,911 
Accumulated other comprehensive loss, netAccumulated other comprehensive loss, net(59,343)(61,135)Accumulated other comprehensive loss, net(45,371)(46,913)
Retained earningsRetained earnings926,011 835,146 Retained earnings987,177 906,827 
Total equityTotal equity2,374,124 2,233,468 Total equity2,611,534 2,527,937 
Long-term debt, less current maturitiesLong-term debt, less current maturities2,413,588 2,438,206 Long-term debt, less current maturities2,903,556 2,440,603 
Total capitalizationTotal capitalization4,787,712 4,671,674 Total capitalization5,515,090 4,968,540 
Current liabilities:Current liabilities:Current liabilities:
Current maturities of long-term debtCurrent maturities of long-term debt25,000 Current maturities of long-term debt250,000 275,000 
Short-term debtShort-term debt267,000 57,000 Short-term debt250,000 250,000 
Accounts payableAccounts payable117,471 161,646 Accounts payable148,486 234,070 
Customer depositsCustomer deposits67,121 67,920 Customer deposits53,094 56,127 
Income taxes payable7,232 
Accrued general taxesAccrued general taxes72,103 48,640 Accrued general taxes81,423 53,064 
Accrued interestAccrued interest34,532 20,495 Accrued interest34,676 22,926 
Deferred purchased gas costs54,636 
Payable to parent90 142 
Other current liabilitiesOther current liabilities141,167 146,046 Other current liabilities169,781 146,422 
Total current liabilitiesTotal current liabilities731,716 556,525 Total current liabilities987,460 1,037,609 
Deferred income taxes and other credits:Deferred income taxes and other credits:Deferred income taxes and other credits:
Deferred income taxes and investment tax credits, netDeferred income taxes and investment tax credits, net596,617 581,100 Deferred income taxes and investment tax credits, net673,874 638,828 
Accumulated removal costsAccumulated removal costs407,000 404,000 Accumulated removal costs432,000 424,000 
Other deferred credits and other long-term liabilitiesOther deferred credits and other long-term liabilities987,408 1,043,337 Other deferred credits and other long-term liabilities875,894 881,286 
Total deferred income taxes and other creditsTotal deferred income taxes and other credits1,991,025 2,028,437 Total deferred income taxes and other credits1,981,768 1,944,114 
Total capitalization and liabilitiesTotal capitalization and liabilities$7,510,453 $7,256,636 Total capitalization and liabilities$8,484,318 $7,950,263 
The accompanying notes are an integral part of these statements.
8

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  March 31, 20212022

SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
CONDENSED CONSOLIDATED STATEMENTS OF INCOME
(Thousands of dollars)
(Unaudited)
Three Months Ended
March 31,
Twelve Months Ended
March 31,
Three Months Ended
March 31,
Twelve Months Ended
March 31,
2021202020212020 2022202120222021
Gas operating revenues$521,932 $502,827 $1,369,690 $1,351,089 
Regulated operations revenuesRegulated operations revenues$676,539 $521,932 $1,676,397 $1,369,690 
Operating expenses:Operating expenses:Operating expenses:
Net cost of gas soldNet cost of gas sold156,021 160,821 338,037 353,381 Net cost of gas sold297,121 156,021 572,007 338,037 
Operations and maintenanceOperations and maintenance106,135 103,088 409,429 419,720 Operations and maintenance119,636 106,135 452,051 409,429 
Depreciation and amortizationDepreciation and amortization68,698 64,725 239,268 222,733 Depreciation and amortization72,114 68,698 256,814 239,268 
Taxes other than income taxesTaxes other than income taxes20,687 16,378 67,769 62,500 Taxes other than income taxes21,652 20,687 81,308 67,769 
Total operating expensesTotal operating expenses351,541 345,012 1,054,503 1,058,334 Total operating expenses510,523 351,541 1,362,180 1,054,503 
Operating incomeOperating income170,391 157,815 315,187 292,755 Operating income166,016 170,391 314,217 315,187 
Other income and (expenses):Other income and (expenses):Other income and (expenses):
Net interest deductionsNet interest deductions(22,166)(25,058)(98,256)(96,985)Net interest deductions(26,610)(22,166)(102,004)(98,256)
Other income (deductions)Other income (deductions)550 (20,536)14,496 (16,965)Other income (deductions)1,315 550 (3,794)14,496 
Total other income and (expenses)Total other income and (expenses)(21,616)(45,594)(83,760)(113,950)Total other income and (expenses)(25,295)(21,616)(105,798)(83,760)
Income before income taxesIncome before income taxes148,775 112,221 231,427 178,805 Income before income taxes140,721 148,775 208,419 231,427 
Income tax expenseIncome tax expense30,060 28,622 37,193 35,424 Income tax expense28,926 30,060 28,204 37,193 
Net incomeNet income$118,715 $83,599 $194,234 $143,381 Net income$111,795 $118,715 $180,215 $194,234 
The accompanying notes are an integral part of these statements.

9

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  March 31, 20212022

SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
(Thousands of dollars)
(Unaudited)
Three Months Ended
March 31,
Twelve Months Ended
March 31,
Three Months Ended
March 31,
Twelve Months Ended
March 31,
2021202020212020 2022202120222021
Net incomeNet income$118,715 $83,599 $194,234 $143,381 Net income$111,795 $118,715 $180,215 $194,234 
Other comprehensive income (loss), net of taxOther comprehensive income (loss), net of taxOther comprehensive income (loss), net of tax
Defined benefit pension plans:Defined benefit pension plans:Defined benefit pension plans:
Net actuarial loss(43,730)(54,026)
Net actuarial gain (loss)Net actuarial gain (loss)— — 44,974 (43,730)
Amortization of prior service costAmortization of prior service cost182 220 840 945 Amortization of prior service cost33 182 580 840 
Prior service cost(1,426)
Amortization of net actuarial lossAmortization of net actuarial loss8,474 7,188 30,037 20,513 Amortization of net actuarial loss6,616 8,474 32,036 30,037 
Regulatory adjustmentRegulatory adjustment(7,277)(6,380)4,753 25,760 Regulatory adjustment(5,523)(7,277)(65,273)4,753 
Net defined benefit pension plansNet defined benefit pension plans1,379 1,028 (8,100)(8,234)Net defined benefit pension plans1,126 1,379 12,317 (8,100)
Forward-starting interest rate swaps (“FSIRS”):Forward-starting interest rate swaps (“FSIRS”):Forward-starting interest rate swaps (“FSIRS”):
Amounts reclassified into net incomeAmounts reclassified into net income413 636 2,244 2,542 Amounts reclassified into net income416 413 1,655 2,244 
Net forward-starting interest rate swapsNet forward-starting interest rate swaps413 636 2,244 2,542 Net forward-starting interest rate swaps416 413 1,655 2,244 
Total other comprehensive income (loss), net of taxTotal other comprehensive income (loss), net of tax1,792 1,664 (5,856)(5,692)Total other comprehensive income (loss), net of tax1,542 1,792 13,972 (5,856)
Comprehensive incomeComprehensive income$120,507 $85,263 $188,378 $137,689 Comprehensive income$113,337 $120,507 $194,187 $188,378 
The accompanying notes are an integral part of these statements.

10

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  March 31, 20212022

SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
(Thousands of dollars)
(Unaudited)
Three Months Ended
March 31,
Twelve Months Ended
March 31,
Three Months Ended
March 31,
Twelve Months Ended
March 31,
2021202020212020 2022202120222021
CASH FLOW FROM OPERATING ACTIVITIES:CASH FLOW FROM OPERATING ACTIVITIES:CASH FLOW FROM OPERATING ACTIVITIES:
Net incomeNet income$118,715 $83,599 $194,234 $143,381 Net income$111,795 $118,715 $180,215 $194,234 
Adjustments to reconcile net income to net cash provided by (used in) operating activities:Adjustments to reconcile net income to net cash provided by (used in) operating activities:Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortizationDepreciation and amortization68,698 64,725 239,268 222,733 Depreciation and amortization72,114 68,698 256,814 239,268 
Deferred income taxesDeferred income taxes14,952 7,707 52,242 15,118 Deferred income taxes34,560 14,952 72,845 52,242 
Changes in current assets and liabilities:Changes in current assets and liabilities:Changes in current assets and liabilities:
Accounts receivable, net of allowanceAccounts receivable, net of allowance(27,631)1,975 (25,673)21,652 Accounts receivable, net of allowance(55,219)(27,631)(50,394)(25,673)
Accrued utility revenueAccrued utility revenue31,900 31,000 (2,400)(1,100)Accrued utility revenue32,900 31,900 (1,500)(2,400)
Deferred purchased gas costsDeferred purchased gas costs(291,469)10,155 (265,385)19,527 Deferred purchased gas costs(76,809)(291,469)(129,068)(265,385)
Accounts payableAccounts payable(33,076)(41,899)18,441 (29,798)Accounts payable(67,584)(33,076)23,256 18,441 
Accrued taxesAccrued taxes41,851 53,335 (13,011)33,526 Accrued taxes30,835 41,851 (3,263)(13,011)
Other current assets and liabilitiesOther current assets and liabilities41,018 99,257 (9,694)106,803 Other current assets and liabilities90,558 41,018 (20,731)(9,694)
Gain on sale of propertyGain on sale of property(1,503)— (1,503)— 
Changes in undistributed stock compensationChanges in undistributed stock compensation2,908 2,496 5,706 5,045 Changes in undistributed stock compensation3,239 2,908 6,723 5,706 
Equity AFUDCEquity AFUDC(981)(1,061)(4,644)(4,262)Equity AFUDC(76)(981)905 (4,644)
Changes in deferred charges and other assetsChanges in deferred charges and other assets(13,535)3,658 (61,484)(9,871)Changes in deferred charges and other assets(6,439)(13,535)(21,647)(61,484)
Changes in other liabilities and deferred creditsChanges in other liabilities and deferred credits(48,782)(55,910)(58,008)(66,294)Changes in other liabilities and deferred credits(4,033)(48,782)(27,637)(58,008)
Net cash provided by (used in) operating activitiesNet cash provided by (used in) operating activities(95,432)259,037 69,592 456,460 Net cash provided by (used in) operating activities164,338 (95,432)285,015 69,592 
CASH FLOW FROM INVESTING ACTIVITIES:CASH FLOW FROM INVESTING ACTIVITIES:CASH FLOW FROM INVESTING ACTIVITIES:
Construction expenditures and property additionsConstruction expenditures and property additions(128,544)(173,353)(647,407)(788,465)Construction expenditures and property additions(141,123)(128,544)(614,562)(647,407)
Changes in customer advancesChanges in customer advances4,285 5,433 12,885 21,356 Changes in customer advances7,693 4,285 19,381 12,885 
OtherOther(121)(31)681 (48)Other(918)(121)(829)681 
Net cash used in investing activitiesNet cash used in investing activities(124,380)(167,951)(633,841)(767,157)Net cash used in investing activities(134,348)(124,380)(596,010)(633,841)
CASH FLOW FROM FINANCING ACTIVITIES:CASH FLOW FROM FINANCING ACTIVITIES:CASH FLOW FROM FINANCING ACTIVITIES:
Contributions from parentContributions from parent45,984 50,000 173,906 187,094 Contributions from parent— 45,984 156,599 173,906 
Dividends paidDividends paid(26,000)(25,200)(105,300)(97,600)Dividends paid(29,200)(26,000)(114,600)(105,300)
Issuance of long-term debt, netIssuance of long-term debt, net446,508 297,222 Issuance of long-term debt, net593,862 — 891,180 446,508 
Retirement of long-term debtRetirement of long-term debt(125,000)Retirement of long-term debt(25,000)— (25,000)(125,000)
Change in credit facility and commercial paperChange in credit facility and commercial paper(130,000)— (150,000)— 
Change in short-term debtChange in short-term debt210,000 (97,000)170,000 (91,000)Change in short-term debt— 210,000 (17,000)170,000 
Withholding remittance - share-based compensationWithholding remittance - share-based compensation(1,242)(2,736)(1,242)(2,756)Withholding remittance - share-based compensation(1,978)(1,242)(1,999)(1,242)
OtherOther(205)(115)(1,352)(887)Other(489)(205)(2,104)(1,352)
Net cash provided by (used in) financing activities228,537 (75,051)557,520 292,073 
Net cash provided by financing activitiesNet cash provided by financing activities407,195 228,537 737,076 557,520 
Change in cash and cash equivalentsChange in cash and cash equivalents8,725 16,035 (6,729)(18,624)Change in cash and cash equivalents437,185 8,725 426,081 (6,729)
Cash and cash equivalents at beginning of periodCash and cash equivalents at beginning of period41,070 40,489 56,524 75,148 Cash and cash equivalents at beginning of period38,691 41,070 49,795 56,524 
Cash and cash equivalents at end of periodCash and cash equivalents at end of period$49,795 $56,524 $49,795 $56,524 Cash and cash equivalents at end of period$475,876 $49,795 $475,876 $49,795 
SUPPLEMENTAL INFORMATION:SUPPLEMENTAL INFORMATION:SUPPLEMENTAL INFORMATION:
Interest paid, net of amounts capitalizedInterest paid, net of amounts capitalized$6,952 $10,204 $93,474 $87,277 Interest paid, net of amounts capitalized$15,757 $6,952 $99,045 $93,474 
Income taxes paid (received), netIncome taxes paid (received), net$$(22,962)$3,359 $700 Income taxes paid (received), net$— $— $(13,529)$3,359 
The accompanying notes are an integral part of these statements.

11

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  March 31, 20212022

SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
CONDENSED CONSOLIDATED STATEMENTS OF EQUITY
(In thousands)
(Unaudited)
Three Months Ended
March 31,
Three Months Ended
March 31,
2021202020222021
Common stock sharesCommon stock sharesCommon stock shares
Beginning and ending balances47,482 47,482 Beginning and ending balances47,482 47,482 
Common stock amountCommon stock amountCommon stock amount
Beginning and ending balances$49,112 $49,112 Beginning and ending balances$49,112 $49,112 
Additional paid-in capitalAdditional paid-in capitalAdditional paid-in capital
Beginning balances1,410,345 1,229,083 Beginning balances1,618,911 1,410,345 
Share-based compensation2,015 125 Share-based compensation1,705 2,015 
Contributions from Southwest Gas Holdings, Inc.45,984 50,000 Contributions from Southwest Gas Holdings, Inc.— 45,984 
Ending balances1,458,344 1,279,208 Ending balances1,620,616 1,458,344 
Accumulated other comprehensive lossAccumulated other comprehensive lossAccumulated other comprehensive loss
Beginning balances(61,135)(55,151)Beginning balances(46,913)(61,135)
Net actuarial gain arising during period, less amortization of unamortized benefit plan cost, net of tax1,379 1,028 Net actuarial gain arising during period, less amortization of unamortized benefit plan cost, net of tax1,126 1,379 
FSIRS amounts reclassified to net income, net of tax413 636 FSIRS amounts reclassified to net income, net of tax416 413 
Ending balances(59,343)(53,487)Ending balances(45,371)(59,343)
Retained earningsRetained earningsRetained earnings
Beginning balances835,146 782,108 Beginning balances906,827 835,146 
Net income118,715 83,599 Net income111,795 118,715 
Share-based compensation(350)(364)Share-based compensation(445)(350)
Dividends declared to Southwest Gas Holdings, Inc.(27,500)(25,900)Dividends declared to Southwest Gas Holdings, Inc.(31,000)(27,500)
Ending balances926,011 839,443 Ending balances987,177 926,011 
Total Southwest Gas Corporation equity ending balancesTotal Southwest Gas Corporation equity ending balances$2,374,124 $2,114,276 Total Southwest Gas Corporation equity ending balances$2,611,534 $2,374,124 
The accompanying notes are an integral part of these statements.
12

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  March 31, 20212022

Note 1 – Background, Organization, and Summary of Significant Accounting Policies
Nature of Operations. Southwest Gas Holdings, Inc. (together with its subsidiaries, the “Company”) is a holding company, owning all of the shares of common stock of Southwest Gas Corporation (“Southwest” or the “natural gas operations”distribution” segment) and, all of the shares of common stock of Centuri Group, Inc. (“Centuri,” or the “utility infrastructure services” segment), and all of the shares of common stock of MountainWest Pipelines Holding Company (“MountainWest,” or the “pipeline and storage” segment).
The Company completed the acquisition of Dominion Energy Questar Pipeline, LLC and related entities (“Questar Pipelines”) in December 2021. Following the completion of the acquisition, the Company formed MountainWest which owns all of the membership interests in Questar Pipelines. In April 2022, the Company completed a general rebranding of the Questar Pipelines entities under the MountainWest name. The acquired operations further diversify the Company’s business in the midstream sector, with an expansion of interstate natural gas pipelines and underground storage services, primarily composed of regulated operations under the jurisdiction of the Federal Energy Regulatory Commission (the “FERC”), thereby expanding natural gas transportation services into Utah, Wyoming, and Colorado. See Note 8 - Business Acquisitions for more information.
Southwest is engaged in the business of purchasing, distributing, and transporting natural gas for 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 operationsdistribution segment are higher during winter periods due to the seasonality incorporated in its regulatory rate structures.
Centuri is a comprehensivestrategic utility infrastructure services enterprisecompany dedicated to delivering a diverse array of solutions topartnering with North America’s gas and electric providers.providers to build and maintain the energy network that powers millions of homes across the United States (“U.S.”) and Canada. Centuri derives revenue primarily from installation, replacement, repair, and maintenance of energy distribution systems.networks. Centuri operations are generally conducted underoperates in the business names ofU.S., primarily as NPL, Construction Co. (“NPL”),Neuco, Linetec, and Riggs Distler, and in Canada, primarily as NPL Canada Ltd. (“NPL Canada”), New England Utility Constructors, Inc. (“Neuco”), and Linetec Services, LLC (“Linetec”).Canada. Utility infrastructure services activity is seasonal in mostmany of Centuri’s operating areas. Peak periods are the summer and fall months in colder climate areas, such as the northeastern and midwestern United States (“U.S.”) and in Canada. In warmer climate areas, such as the southwestern and southeastern U.S., utility infrastructure services activity continues year round.
Centuri completed the acquisition of Drum Parent LLC (“Drum”), including Drum’s most significant operating subsidiary, Riggs Distler, in August 2021, thereby expanding Centuri’s electric infrastructure services footprint in the northeast and mid-Atlantic regions of the U.S. See Note 8 - Business Acquisitions for more information.
In March 2022, the Company announced that its Board of Directors (the “Board”) had determined to separate Centuri from the Company and authorized management to complete the separation within nine to twelve months. Management evaluated various alternatives to determine the optimal structure to maximize stockholder value and announced the separation structure was expected to be a tax-free spin-off in which stockholders of the Company would receive a prorated dividend of Centuri shares in association with the completion. Then, in April 2022, as a result of interest in the Company well in excess of a tender offer by an activist stockholder (Carl Icahn) to other stockholders, the Board authorized the review of a full range of strategic alternatives to maximize stockholder value. As part of this process, a strategic transactions committee of the Board (the “Strategic Transactions Committee”), consisting entirely of independent directors, will evaluate a sale of the Company, as well as a range of alternatives, including, but not limited to, a separate sale of its business units and/or pursuing the spin-off of Centuri.
Basis of Presentation. The condensed consolidated financial statements of Southwest Gas Holdings, Inc. and subsidiaries (the “Company”) and Southwest included herein have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”). The year-end condensed balance sheet data was derived from audited financial statements. Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) have been condensed or omitted pursuant to such rules and regulations. No substantive change has occurred with regard to the Company’s business segments on the whole.
The preparation of the condensed consolidated financial statements requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities atas of the date of the financial statements, and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. In the opinion of management, all adjustments, consisting of normal recurring items and estimates necessary for a fair depiction of results for the interim periods, have been made. In association with the novel Coronavirus (“COVID-19”) pandemic environment, utility operations, and to a large extent, utility infrastructure services, have been deemed “essential services.” Management has considered the impact of the pandemic and adjusted certain estimates, where relevant, used in the preparation of the condensed consolidated financial statements.
These condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto included in the 20202021 Annual Report to Stockholders, which is incorporated by reference into the 20202021 Form 10-K.
Fair Value Measurements. Certain assets and liabilities are reported at fair value, which is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date.
U.S. GAAP states that a fair value measurement should be based on the assumptions that market participants would use in pricing the asset or liability and establishes a fair value hierarchy that ranks the inputs used to measure fair value by their reliability. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to fair values derived from unobservable inputs (Level 3 measurements). Financial assets and liabilities are categorized in their entirety based on the lowest level of input that is significant to the fair value measurement. The three levels of the fair value hierarchy are as follows:
Level 1 – quoted prices (unadjusted) in active markets for identical assets or liabilities that a company has the ability to access at the measurement date.
Level 2 – inputs other than quoted prices included within Level 1 that are observable for similar assets or liabilities, either directly or indirectly.
Level 3 – unobservable inputs for the asset or liability. Unobservable inputs are used to measure fair value to the extent that observable inputs are not available, thereby allowing for situations in which there is little, if any, market activity for the asset or liability at the measurement date.
13

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  March 31, 20212022

The Company primarily used quoted market prices and other observable market pricing information in valuing cash and cash equivalents, long-term debt outstanding, and assets of the qualified pension plan and postretirement benefit plans required to be recorded and/or disclosed at fair value.
Other0Other Property and Investments. Other property and investments on Southwest’s and the Company’s Condensed Consolidated Balance Sheets includes:
(Thousands of dollars)(Thousands of dollars)March 31, 2021December 31, 2020(Thousands of dollars)March 31, 2022December 31, 2021
Southwest Gas Corporation:
Net cash surrender value of COLI policiesNet cash surrender value of COLI policies$143,618 $140,874 Net cash surrender value of COLI policies$147,987 $149,947 
Other propertyOther property2,720 2,737 Other property3,181 3,146 
Total Southwest Gas CorporationTotal Southwest Gas Corporation146,338 143,611 Total Southwest Gas Corporation151,168 153,093 
Centuri property, equipment, and intangibles1,106,855 1,089,414 
Centuri accumulated provision for depreciation and amortization(439,126)(422,741)
Non-regulated property, equipment, and intangiblesNon-regulated property, equipment, and intangibles1,645,159 1,616,392 
Non-regulated accumulated provision for depreciation and amortizationNon-regulated accumulated provision for depreciation and amortization(540,206)(512,343)
Other property and investmentsOther property and investments28,605 23,961 Other property and investments57,170 59,337 
Total Southwest Gas Holdings, Inc.Total Southwest Gas Holdings, Inc.$842,672 $834,245 Total Southwest Gas Holdings, Inc.$1,313,291 $1,316,479 
Included in the table above are the net cash surrender values of company-owned life insurance (“COLI”) policies. These life insurance policies on members of management and other key employees are used by Southwest to indemnify itself against the loss of talent, expertise, and knowledge, as well as to provide indirect funding for certain nonqualified benefit plans. Balances reflect impactsThe term non-regulated in regard to assets and related balances in the table above is in reference to the non-rate regulated operations of equityCenturi, and fixed-income securities underlying the cash surrender values at each reporting date; however, ultimately, only the insurance proceeds are ever actually received, due to management’s intent to hold the policies to maturity.a more limited extent, certain assets of MountainWest.
Cash and Cash Equivalents.  For purposes of reporting consolidated cash flows, cash and cash equivalents include cash on hand and financial instruments with original maturities of three months or less. Such investments are carried at cost, which approximates market value. Cash and cash equivalents of Southwest and the Company include money market fund investments totaling approximately $40,000$169 million and $231 million, for each entitySouthwest and the Company, respectively, at March 31, 20212022, and $20 million for the Company as of December 31, 2020, respectively, which2021. The balance for Southwest as of December 31, 2021 was insignificant. These investments fall within Level 2 of the fair value hierarchy, due to the asset valuation methods used by money market funds. The Company had $7 million in restricted cash included in Cash and cash equivalents at March 31, 2022, related to residual proceeds received from its March 2022 common stock offering to be applied against its 364-day Term Loan Facility, which occurred in April 2022. The restricted cash balance is included in Cash and cash equivalents within the Company’s Condensed Consolidated Statement of Cash Flows as of March 31, 2022.
Typical non-cashNon-cash investing activities for the Company and Southwest include customer advances applied as contributions toward utility construction activity, and capital expenditures that were not yet paid as of period-end reporting dates, but rather included in accounts payable. Typical activities that represent aspects of both non-cash investingtotaling approximately $26.1 million at March 31, 2022, and non-cash financing activities relate to right-of-use assets obtained in exchange for lease liabilities (including,$19.4 million at times, lease terminations and modifications). Amounts related to these collective activities were immaterial for the periods presented herein.
Intercompany Transactions. Centuri recognizes revenues generated from contracts with Southwest (see Note 7 – Segment Information). The accounts receivable balance, revenues, and associated profits are included in the condensed consolidated financial statements of the Company and Southwest and were not eliminated during consolidation in accordance with accounting treatment for rate-regulated entities.December 31, 2021.
Accounts Receivable, net of allowances. Business activity with respect to natural gas utility operations is conducted with customers located withinSouthwest lifted the 3-state region of Arizona, Nevada, and California. Southwest’s accounts receivable are short-term in nature with no billing due dates customarily extending beyond one month, with customers’ credit worthiness assessed upon account creation by evaluation of other utility service and related payment history. Due to the ongoing COVID-19 pandemic, Southwest continued the moratorium initiated in March 2020 on disconnection of natural gas service for non-payment butin Arizona and Nevada in September 2021, which was initiated (at the same time as a moratorium on late fees) in March 2020 in response to the COVID-19 pandemic. The moratorium on disconnection in California ended in November 2021. Southwest recommenced assessing late fees on past-due balances in NevadaArizona and ArizonaNevada in April 2021, with late feesand in California expected to recommence in the latter half ofAugust 2021. Southwest iscontinues to actively workingwork with customers experiencing financial hardship by means of flexible payment options. Management continues to monitor expected credit lossesoptions, partnering with assistance agencies and participating in light of the evolving impact of COVID-19. The allowance as of state-funded arrearage payment assistance programs.March 31, 2021 reflects the expected impact from the pandemic on balances as of that date, including consideration of customers’ ability to pay currently and once the moratorium on disconnections is lifted.
Utility infrastructure services contracts receivable are recorded at face amounts less an allowance for doubtful accounts. Centuri’s customers are generally investment-grade gas and electric utility companies for which Centuri has historically recognized an insignificant amount of write-offs. Centuri has not been significantly impacted, nor does it anticipate it will experience significant difficulty in collecting amounts due, as a result of the current environment surrounding COVID-19 given the nature of its customers.
Activity between periods in the allowance for uncollectibles and the balances as of the periods presented within the Company’s and Southwest’s financial statements were not material to the condensed consolidated financial statements overall.
14

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONMarch 31, 2021

Deferred Purchased Gas CostsCosts. . The various regulatory commissions have established procedures to enable Southwestthe rate-regulated companies to adjust its billing rates for changes in the cost of natural gas purchased. The difference between the current cost of gas purchased and the cost of gas recovered in billed rates is deferred. Generally, these deferred amounts are recovered or refunded within one year.
In mid-February 2021, the central U.S. (from south Texas to North Dakota and the eastern Rocky Mountains) experienced extreme cold temperatures, which increased natural gas demand and caused supply issues due to wellhead freeze-offs, power outages, or other adverse operating conditions upstream of Southwest’s distribution systems. These conditions caused daily natural gas prices to reach unprecedented levels. During this time, Southwest secured natural gas supplies, albeit at substantially higher prices, maintaining service to its customers. The incremental cost for these supplies was approximately $250 million, funded using a 364-day364-day $250 million Bank Term Loanterm loan executed in March 2021. The incremental gas costs were included, for collection from customers, as part of the purchased gas adjustment (“PGA”) mechanisms. The term loan was amended in March 2022 to extend the maturity date to March 2023 due to gas prices that, while not at levels incurred during the 2021 freeze, continue to be elevated (see Note 5 – Debt). The incremental gas costs are expected to be collected from customers through the purchased gas adjustment (“PGA”) mechanisms.
Following the extreme weather event, an interstate transmission pipeline company billed Southwest, in addition to customary transmission costs, $65 million for pipeline imbalance charges, allegedly incurred during the period of the pipeline’s critical operation condition. However, Southwest has formally disputed these imbalance charges and believes that no amounts are due to the pipeline. Consequently, Southwest has not recognized this charge. Pipeline transmission costs, including periodic imbalance charges, are components of the cost of gas recovered from customers through the PGA and similar mechanisms.
Prepaid and other current assets. Prepaid and other current assets includes gas pipefor Southwest include, among other things, materials and operating supplies of $47$60 million at March 31, 20212022 and $5062.9 million at December 31, 20202021 (carried at weighted average cost). For the Company, there were materials and operating supplies of $64.6 million and $67.4 million at March 31, 2022 and December 31, 2021, which included amounts for MountainWest. Also included in the balance for both Southwest and the Company was $52 million as of December 31, 2021 in accrued purchased gas cost, with no corresponding asset balance as of March 31, 2022 for either entity.
14

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONMarch 31, 2022

Goodwill. Goodwill is assessed as of October 1st each year for impairment, or more frequently, if circumstances indicate an impairment to the carrying value of goodwill may have occurred. Management of the Company and Southwest considered its reporting units and segments, and determineddetermining that its segments and reporting units remainthey remained consistent between periods presented below, and that no change was necessary with regard to the level at which goodwill is assessed for impairment. The acquisition of MountainWest resulted in a new reportable segment which is assessed for impairment beginning in 2022. Since December 31, 2020,2021, management also qualitatively assessed whether events during the first three months of 20212022 may have resulted in conditions whereby the carrying value of goodwill was higher than its fair value, which if the case, could be an indication of a permanent impairment. Through this assessment, no such condition was believed to have existed and therefore, 0no impairment was deemed to have occurred. Goodwill onin Southwest’s and the Company’s Condensed Consolidated Balance Sheets includes:is as follows:
(Thousands of dollars)(Thousands of dollars)Natural Gas
Operations
Utility Infrastructure
Services
Total Company(Thousands of dollars)Natural Gas
Distribution
Utility Infrastructure
Services
Pipeline and StorageTotal Company
December 31, 2020$10,095 $335,089 $345,184 
December 31, 2021December 31, 2021$10,095 $785,058 $986,179 $1,781,332 
Measurement-period adjustments from Riggs Distler acquisition (a)Measurement-period adjustments from Riggs Distler acquisition (a)— (574)— (574)
Measurement-period adjustments from MountainWest acquisition (a)Measurement-period adjustments from MountainWest acquisition (a)— — (8,690)(8,690)
Foreign currency translation adjustmentForeign currency translation adjustment1,369 1,369 Foreign currency translation adjustment— 1,603 — 1,603 
March 31, 2021$10,095 $336,458 $346,553 
March 31, 2022March 31, 2022$10,095 $786,087 $977,489 $1,773,671 

(a) See
Note 8 - Business Acquisitions for details regarding measurement-period adjustments.
Other Current Liabilities. Management recognizes in its balance sheets various liabilities that are expected to be settled through future cash payment within the next twelve months, including amounts payable under regulatory mechanisms, customary accrued expenses for employee compensation and benefits, declared but unpaid dividends, and miscellaneous other accrued liabilities. Other current liabilities for the Company includes $34.5include $41.4 million and $32.6$36 million of dividends declared as well as $37 million and $25.2 million of accrued property taxes, as of March 31, 20212022 and December 31, 2020,2021, respectively.
15

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONMarch 31, 2021

Other Income (Deductions). The following table provides the composition of significant items included in Other income (deductions) in Southwest’s and the Company’s Condensed Consolidated Statements of Income:
Three Months Ended March 31,Twelve Months Ended
March 31,
Three Months Ended March 31,Twelve Months Ended
March 31,
(Thousands of dollars)(Thousands of dollars)2021202020212020(Thousands of dollars)2022202120222021
Southwest Gas Corporation - natural gas operations segment:
Southwest Gas Corporation:Southwest Gas Corporation:
Change in COLI policiesChange in COLI policies$2,700 $(15,500)$27,400 $(5,700)Change in COLI policies$(2,000)$2,700 $4,100 $27,400 
Interest incomeInterest income716 1,388 3,343 6,147 Interest income2,801 716 7,198 3,343 
Equity AFUDCEquity AFUDC981 1,061 4,644 4,262 Equity AFUDC76 981 (905)4,644 
Other components of net periodic benefit costOther components of net periodic benefit cost(3,505)(5,005)(18,522)(16,299)Other components of net periodic benefit cost(188)(3,505)(10,704)(18,522)
Miscellaneous income and (expense)Miscellaneous income and (expense)(342)(2,480)(2,369)(5,375)Miscellaneous income and (expense)626 (342)(3,483)(2,369)
Southwest Gas Corporation - total other income (deductions)Southwest Gas Corporation - total other income (deductions)550 (20,536)14,496 (16,965)Southwest Gas Corporation - total other income (deductions)1,315 550 (3,794)14,496 
Utility infrastructure services segment:
Centuri, MountainWest, and Southwest Gas Holdings, Inc.:Centuri, MountainWest, and Southwest Gas Holdings, Inc.:
Foreign transaction gain (loss)Foreign transaction gain (loss)(3)(10)(9)Foreign transaction gain (loss)(3)(16)(9)
Equity AFUDCEquity AFUDC182 — 182 — 
Equity in earnings of unconsolidated investmentsEquity in earnings of unconsolidated investments515 (8)749 121 
Miscellaneous income and (expense)Miscellaneous income and (expense)(99)(232)(58)(656)Miscellaneous income and (expense)(771)(91)176 (179)
Centuri - total other income (deductions)(102)(242)(67)(651)
Corporate and administrative92 
Consolidated Southwest Gas Holdings, Inc. - total other income (deductions)$448 $(20,770)$14,429 $(17,524)
Southwest Gas Holdings, Inc. - total other income (deductions)Southwest Gas Holdings, Inc. - total other income (deductions)$1,244 $448 $(2,703)$14,429 
Included in the table above is the change in cash surrender values of COLI policies (including net death benefits recognized). Current tax regulations provide for tax-free treatment of life insurance (death benefit) proceeds. Therefore, changes in the cash surrender values of COLI policies, as they progress towards the ultimate death benefits, are also recorded without tax consequences. Refer also to the discussion of Other Property and Investments above and also to Note 2 – Components of Net Periodic Benefit Cost.
Redeemable Noncontrolling Interest.Interests. In connection with the acquisition of Linetec in November 2018, the previous owner retained a 20% equity interest in Linetec,that entity, the reduction of which isbeing subject to certain rights based on the passage of time or upon the occurrence of certain triggering events. Effective January 2022, the Company, through Centuri, had the right, but
15

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONMarch 31, 2022

not the obligation, to purchase at fair value (subject to a floor) a portion of the interest held by the previous owner, and in incremental amounts each year thereafter. In March 2022, the parties agreed to a partial redemption based on these provisions, and as a result, Centuri paid $39.6 million to the previous owner of Linetec for a 5.0% equity interest in Linetec, thereby reducing the balance continuing to be redeemable to 15% under the terms of the original agreement. In order to fund the redemption, Southwest Gas Holdings, Inc. contributed capital to Centuri.
Certain members of Riggs Distler management have a 1.42% interest in Drum, which is redeemable, subject to certain rights based on the passage of time or upon the occurrence of certain triggering events.
Significant changes in the value of the redeemable noncontrolling interest,interests, above a floor establisheddetermined at the acquisitionestablishment date, are recognized as they occur, and the carrying value is adjusted as necessary at each reporting date. The fair value is estimated using a market approach that utilizes certain financial metrics from guideline public companies of similar industry and operating characteristics. Based on the fair value model employed, the estimated redemption value of the Linetec redeemable noncontrolling interest increaseddecreased by approximately $38$22 million during the first quarter of 2021.three months ended March 31, 2022. Adjustment to the redemption value also impacts retained earnings, as reflected in the Company’s Condensed Consolidated Statement of Equity, but does not impact net income. The following depicts the changechanges to the balancebalances of the redeemable noncontrolling interest:interests:
(Thousands of dollars):Redeemable Noncontrolling Interest
Balance, December 31, 2020$165,716 
Net income attributable to redeemable noncontrolling interest1,552 
 Redemption value adjustment38,018 
Balance, March 31, 2021$205,286 

16

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONMarch 31, 2021

(Thousands of dollars):LinetecDrumTotal
Balance, December 31, 2021$184,148 $12,569 $196,717 
Net income attributable to redeemable noncontrolling interests1,103 (31)1,072 
 Redemption value adjustments(22,156)— (22,156)
 Redemption of equity interest from noncontrolling party(39,649)— (39,649)
Balance, March 31, 2022$123,446 $12,538 $135,984 
Earnings Per Share. Basic earnings per share (“EPS”) in each period of this report were calculated by dividing net income attributable to Southwest Gas Holdings, Inc. by the weighted-average number of shares during those periods. Diluted EPS includes additional weighted-average common stock equivalents (performance shares and restricted stock units). Unless otherwise noted, the term “Earnings Per Share” refers to Basic EPS. A reconciliation of the denominator used in Basic and Diluted EPS calculations is shown in the following table:
Three Months Ended
March 31,
Twelve Months Ended
March 31,
Three Months Ended
March 31,
Twelve Months Ended
March 31,
(In thousands)(In thousands)2021202020212020(In thousands)2022202120222021
Weighted average basic sharesWeighted average basic shares57,600 55,310 56,564 54,726 Weighted average basic shares60,737 57,600 59,919 56,564 
Effect of dilutive securities:Effect of dilutive securities:Effect of dilutive securities:
Management Incentive Plan shares
Restricted stock units (1)Restricted stock units (1)79 53 85 57 Restricted stock units (1)117 79 125 85 
Weighted average diluted sharesWeighted average diluted shares57,679 55,363 56,649 54,792 Weighted average diluted shares60,854 57,679 60,044 56,649 
(1) The number of securities included 75,000112,000 and 50,00075,000 performance shares during the three months ending March 31, 2022 and 2021, and 2020,114,000 and 76,000 and 48,000 performance shares during the twelve months ending March 31, 20212022 and 2020,2021, respectively, the total of which was derived by assuming that target performance will be achieved during the relevant performance period.
Contingencies. Southwest maintains liability insurance for various risks associated with the operation of its natural gas pipelines and facilities. In connection with these liability insurance policies, Southwest is responsible for an initial deductible or self-insured retention amount per incident, after which the insurance carriers would be responsible for amounts up to the policy limits. For the policy year August 2021 to July 2022, these liability insurance policies require Southwest to be responsible for the first $1 million (self-insured retention) of each incident plus the first $4 million in aggregate claims above its self-insured retention in the policy year. In August 2021, a natural gas pipe operated by Southwest was involved in an explosion that injured four individuals and damaged property. The explosion was caused by a leak in the pipe, and is under investigation. Individuals that were injured have each brought legal claims against Southwest and other parties. If Southwest is deemed fully or partially responsible, Southwest estimates its net exposure could be equal to the self-insured retention of $5 million (the maximum noted above). In 2021, pursuant to Accounting Standards Codification 450, Contingencies, Southwest recorded a $5 million liability related to this incident reflecting the maximum noted above; an estimate of actual loss greater than this exposure (to be covered by insurance) cannot be estimated as of the date these financial statements are issued.
On November 29, 2021, Icahn Partners LP and Icahn Master Fund LP (collectively, “Icahn”) commenced an action in the Court of Chancery for the State of Delaware. The action is captioned Icahn Partners LP, et al. v. John P. Hester, et al., C.A. No.
16

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONMarch 31, 2022

2021-1031-KSJM (Del. Ch.). The complaint names the Company and the individual members of the Board as defendants. The complaint seeks to allege breach of fiduciary duty claims and, among other things, seeks declaratory and injunctive relief to (1) limit the scope and manner of certain equity issuances by the Company; (2) allow Icahn to proceed with a Special Meeting proposal at the Company’s 2022 Annual Meeting; and (3) require the Board to approve Icahn’s slate of nominees as “continuing directors” under certain of the Company’s debt instruments. After filing the complaint, Icahn sought a temporary restraining order to prohibit defendants from making certain equity issuances. On December 21, 2021, the Court denied Icahn’s request. On January 19, 2022, the defendants filed a motion to dismiss the claims that were subject to Icahn’s motion for a temporary restraining order. The same day, the defendants filed an answer, denying the remaining claims in Icahn’s complaint. On February 11, 2022, defendants filed a motion for summary judgement on Icahn’s claims regarding a proposal for a special meeting. On April 5, 2022, following a hearing, the court granted defendants’ motion for summary judgment, finding that the Company properly rejected Icahn’s special meeting proposal. On April 27, 2022, the court entered an order dismissing Icahn’s special meeting proposal claims with prejudice and Icahn’s “continuing directors” claims without prejudice. In accordance with the Cooperation Agreement described in Note 9 - Subsequent Events, Icahn filed a stipulation of dismissal of the case with prejudice, which was entered by the court on May 9, 2022.
On November 18, 2021, the City Pension Fund for Firefighters and Police Officers in the City of Miami Beach (“City Pension Fund”) commenced a putative class action lawsuit in the Court of Chancery for the State of Delaware on behalf of a putative class of persons who purchased the Company’s stock. The action is captioned City Pension Fund for Firefighters and Police Officers in the City of Miami Beach v. Robert L. Boughner, et al., C.A. No. 2021-0990-KSJM (Del. Ch.). The complaint was later amended on November 30, 2021. The amended complaint names the Company and the individual members of the Board as defendants. The complaint seeks to assert breach of fiduciary duty claims, alleging that the Board’s recommendation that stockholders reject Icahn’s tender offer to purchase shares of the Company’s common stock omitted material information about the Company’s financial analysis; and seeks to have the Board approve Icahn’s slate of nominees as “continuing directors” under certain of the Company’s debt instruments. On March 9, 2022, City Pension Fund filed a motion for summary judgment on its claim that the Board omitted material information in its recommendation concerning Icahn’s tender offer. On April 19, 2022, City Pension Fund filed a notice of withdrawal of its motion for summary judgment. The Company believes that the claims lack merit and intends to vigorously defend against them.
Recent Accounting Standards Updates.
Accounting pronouncements effective or adopted in 2021:
In December 2019, the Financial Accounting Standards Board (the “FASB”) issued ASU 2019-12 “Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes.” The update simplifies the accounting for income taxes by removing certain exceptions to the general principles, as well as improving consistent application in Topic 740 by clarifying and amending existing guidance. The Company and Southwest adopted the update in the first quarter of 2021, the impact of which was not material to the condensed consolidated financial statements of the Company or Southwest.
Recently issued accounting pronouncements that will be effective after 2021:2022:
In March 2020, the FASB issued ASU 2020-04 “Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting.” The update provides optional guidance for a limited time to ease the potential burden in accounting for, or recognizing the effects of, reference rate reform on financial reporting, including when modifying a contract (during the eligibility period covered by the update to Topic 848) to replace a reference rate affected by such reform. The update applies only to contracts and hedging relationships that reference the London Interbank Offered Rate (“LIBOR”) or another rate expected to be discontinued due to reference rate reform. The guidance was eligible to be applied upon issuance on March 12, 2020, and can generally be applied through December 31, 2022, but to date, no further updates have occurred that would extend the optional guidance to the full tenor of LIBOR expiration dates occurring after 2022. Management will monitor the impacts this update might have on the Company’s and Southwest’s consolidated financial statements and disclosures, and will reflect such appropriately, in the event that the optional guidance is elected. Management will also monitor further FASB action, if any, in regard to the full tenor of LIBOR expiration dates. See also LIBOR discussion in Note 5 – Debt.
In August 2020, the FASB issued ASU 2020-06 “Debt—Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging— Contracts in Entity’s Own Equity (Subtopic 815-40): Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity.” The update, amongst other amendments, improves the guidance related to the disclosures and earnings-per-share for convertible instruments and contracts in an entity’s own equity. The update is effective for fiscal years beginning after December 15, 2021, including interim periods within those fiscal years; early adoption is permitted. Management is evaluating what impacts, if any, this update might have onstarting in the Company’s consolidated financial statements and disclosures.first quarter of 2022 in regard to relevant contracts.

17

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  March 31, 20212022

Note 2 – Components of Net Periodic Benefit Cost
Southwest has a noncontributory qualified retirement plan with defined benefits covering substantially all employees and a separate unfunded supplemental retirement plan (“SERP”) which is limited to officers. Southwest also provides postretirement benefits other than pensions (“PBOP”) to its qualified retirees for health care, dental, and life insurance. The defined benefit qualified retirement plan, SERP and PBOP are not available to Southwest employees hired on or after January 1, 2022. Employees hired in 2022 or later periods are eligible for enhanced defined contributions as part of the Southwest 401(k) plan rather than participating in the defined benefit retirement plan.
The service cost component of net periodic benefit costs included in the table below is a component of an overhead loading process associated with the cost of labor. The overhead process ultimately results in allocation of service cost to the same accounts to which productive labor is charged. As a result, service costs become components of various accounts, primarily operations and maintenance expense, net utilityregulated operations plant, and deferred charges and other assets for both the Company and Southwest. The other components of net periodic benefit cost are reflected in Other income (deductions) on the Condensed Consolidated Statements of Income of each entity.
Qualified Retirement Plan Qualified Retirement Plan
March 31, March 31,
Three MonthsTwelve Months Three MonthsTwelve Months
2021202020212020 2022202120222021
(Thousands of dollars)(Thousands of dollars)    (Thousands of dollars)    
Service costService cost$10,290 $8,574 $36,015 $27,972 Service cost$11,028 $10,290 $41,897 $36,015 
Interest costInterest cost10,108 11,388 44,275 48,142 Interest cost11,251 10,108 41,575 44,275 
Expected return on plan assetsExpected return on plan assets(18,088)(16,324)(67,060)(61,507)Expected return on plan assets(19,978)(18,088)(74,242)(67,060)
Amortization of net actuarial lossAmortization of net actuarial loss10,489 9,007 37,507 25,774 Amortization of net actuarial loss8,117 10,489 39,583 37,507 
Net periodic benefit costNet periodic benefit cost$12,799 $12,645 $50,737 $40,381 Net periodic benefit cost$10,418 $12,799 $48,813 $50,737 
SERP SERP
March 31, March 31,
Three MonthsTwelve Months Three MonthsTwelve Months
2021202020212020 2022202120222021
(Thousands of dollars)(Thousands of dollars)    (Thousands of dollars)    
Service costService cost$131 $98 $422 $298 Service cost$106 $131 $501 $422 
Interest costInterest cost358 401 1,561 1,721 Interest cost360 358 1,433 1,561 
Amortization of net actuarial lossAmortization of net actuarial loss660 451 2,014 1,216 Amortization of net actuarial loss588 660 2,570 2,014 
Net periodic benefit costNet periodic benefit cost$1,149 $950 $3,997 $3,235 Net periodic benefit cost$1,054 $1,149 $4,504 $3,997 
PBOP PBOP
March 31, March 31,
Three MonthsTwelve Months Three MonthsTwelve Months
2021202020212020 2022202120222021
(Thousands of dollars)(Thousands of dollars)    (Thousands of dollars)    
Service costService cost$423 $396 $1,608 $1,353 Service cost$485 $423 $1,753 $1,608 
Interest costInterest cost548 645 2,485 2,929 Interest cost613 548 2,258 2,485 
Expected return on plan assetsExpected return on plan assets(810)(852)(3,366)(3,219)Expected return on plan assets(807)(810)(3,236)(3,366)
Amortization of prior service costsAmortization of prior service costs240 289 1,106 1,243 Amortization of prior service costs44 240 763 1,106 
Net periodic benefit costNet periodic benefit cost$401 $478 $1,833 $2,306 Net periodic benefit cost$335 $401 $1,538 $1,833 

18

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  March 31, 20212022

Note 3 – Revenue
The following information about the Company’s revenues is presented by segment. Southwest encompasses the natural gas operationsdistribution segment, and Centuri encompasses the utility infrastructure services segment, and MountainWest encompasses the pipeline and storage segment. Certain disclosures, where materially consistent with those provided most recently in Southwest’s and the Company’s 2021 Annual Report on Form 10-K, are not repeated below.
Natural Gas OperationsDistribution Segment:
GasSouthwest’s operating revenues included on the Condensed Consolidated Statements of Income of both the Company and Southwest include revenue from contracts with customers, which is shown below, disaggregated by customer type, and variousin addition to other categories of revenue:
Three Months Ended
March 31,
Twelve Months Ended March 31, Three Months Ended
March 31,
Twelve Months Ended March 31,
(Thousands of dollars)(Thousands of dollars)2021202020212020(Thousands of dollars)2022202120222021
ResidentialResidential$403,143 $378,555 $983,108 $934,115 Residential$514,586 $403,143 $1,147,055 $983,108 
Small commercialSmall commercial81,398 82,463 220,476 241,970 Small commercial123,984 81,398 312,800 220,476 
Large commercialLarge commercial12,673 12,667 44,639 47,640 Large commercial20,161 12,673 64,859 44,639 
Industrial/otherIndustrial/other13,770 6,702 33,310 22,298 Industrial/other9,972 13,770 38,515 33,310 
TransportationTransportation24,536 24,406 88,345 91,884 Transportation26,632 24,536 94,336 88,345 
Revenue from contracts with customersRevenue from contracts with customers535,520 504,793 1,369,878 1,337,907 Revenue from contracts with customers695,335 535,520 1,657,565 1,369,878 
Alternative revenue program revenues (deferrals)Alternative revenue program revenues (deferrals)(16,373)(3,765)(468)5,668 Alternative revenue program revenues (deferrals)(23,499)(16,373)6,055 (468)
Other revenues (1)Other revenues (1)2,785 1,799 280 7,514 Other revenues (1)4,703 2,785 12,777 280 
Total Gas operating revenues$521,932 $502,827 $1,369,690 $1,351,089 
Total Regulated operations revenuesTotal Regulated operations revenues$676,539 $521,932 $1,676,397 $1,369,690 
(1) Amounts include late fees and other miscellaneous revenues, and may also include the impact of certain regulatory mechanisms, such as cost-of-service components in customer rates expected to be returned to customers in future periods. Late fees and certain other fees were reduced, forAlso includes the three- and twelve-month periods ended March 31, 2021, due toimpacts of a temporary moratorium on late fees and disconnection for nonpayment during the COVID-19 pandemic.
Utility Infrastructure Services Segment:
The following tables display Centuri’s revenue, reflected as Utility infrastructure services revenues on the Condensed Consolidated Statements of Income of the Company, representing revenue from contracts with customers disaggregated by service and contract types:
 Three Months Ended
March 31,
Twelve Months Ended March 31,
(Thousands of dollars)2021202020212020
Service Types:
Gas infrastructure services$221,837 $217,709 $1,265,288 $1,258,790 
Electric power infrastructure services93,961 72,320 433,467 267,736 
Other48,177 43,464 280,015 245,083 
Total Utility infrastructure services revenues$363,975 $333,493 $1,978,770 $1,771,609 
 Three Months Ended
March 31,
Twelve Months Ended March 31,
(Thousands of dollars)2021202020212020
Contract Types:
Master services agreement$293,680 $263,545 $1,520,144 $1,411,267 
Bid contract70,295 69,948 458,626 360,342 
Total Utility infrastructure services revenues$363,975 $333,493 $1,978,770 $1,771,609 
Unit price contracts$234,449 $243,136 $1,347,953 $1,387,706 
Fixed price contracts34,594 27,545 164,750 101,931 
Time and materials contracts94,932 62,812 466,067 281,972 
Total Utility infrastructure services revenues$363,975 $333,493 $1,978,770 $1,771,609 
 Three Months Ended
March 31,
Twelve Months Ended March 31,
(Thousands of dollars)2022202120222021
Service Types:
Gas infrastructure services$260,682 $221,837 $1,341,185 $1,265,288 
Electric power infrastructure services181,968 93,961 613,209 433,467 
Other81,227 48,177 364,169 280,015 
Total Utility infrastructure services revenues$523,877 $363,975 $2,318,563 $1,978,770 
19

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  March 31, 20212022

 Three Months Ended
March 31,
Twelve Months Ended March 31,
(Thousands of dollars)2022202120222021
Contract Types:
Master services agreement$356,543 $293,680 $1,715,841 $1,520,144 
Bid contract167,334 70,295 602,722 458,626 
Total Utility infrastructure services revenues$523,877 $363,975 $2,318,563 $1,978,770 
Unit price contracts$302,523 $234,449 $1,437,156 $1,347,953 
Fixed price contracts86,537 34,594 319,685 164,750 
Time and materials contracts134,817 94,932 561,722 466,067 
Total Utility infrastructure services revenues$523,877 $363,975 $2,318,563 $1,978,770 
The following table provides information about contracts receivable and revenue earned on contracts in progress in excess of billings (contract asset)assets), which are both included within Accounts receivable, net of allowances, as well as amounts billed in excess of revenue earned on contracts (contract liability)liabilities), which are included in Other current liabilities as of March 31, 20212022 and December 31, 20202021 on the Company’s Condensed Consolidated Balance Sheets:
(Thousands of dollars)(Thousands of dollars)March 31, 2021December 31, 2020(Thousands of dollars)March 31, 2022December 31, 2021
Contracts receivable, netContracts receivable, net$197,357 $278,316 Contracts receivable, net$309,876 $296,005 
Revenue earned on contracts in progress in excess of billingsRevenue earned on contracts in progress in excess of billings107,336 96,996 Revenue earned on contracts in progress in excess of billings197,620 214,774 
Amounts billed in excess of revenue earned on contractsAmounts billed in excess of revenue earned on contracts5,985 4,507 Amounts billed in excess of revenue earned on contracts26,875 11,860 
The revenue earned on contracts in progress in excess of billings (contract asset) primarily relates to Centuri’s rights to consideration for work completed but not billed and/or approved for billing at the reporting date. These contract assets are transferred to contracts receivable when the rights become unconditional. The amounts billed in excess of revenue earned (contract liability) primarily relate to the advance consideration received from customers for which work has not yet been completed. The change in this contract liability balance from December 31, 20202021 to March 31, 20212022 is due to increases in cash received, net of revenue recognized, from contracts that commenced during the period, offset by revenue recognized of $4.5 approximately $11.9 million thatthat was included in this itembalance as of January 1, 2021,2022, after which time it became earned and the balance was reduced, and to increases due to cash received, net of revenue recognized during the period related to contracts that commenced during the period.reduced.
For contracts that have an original duration of one year or less, Centuri uses the practical expedient applicable to such contracts and does not consider/compute an interest component based on the time value of money. Further,Furthermore, because of the short duration of these contracts, Centuri has not disclosed the transaction price for the remaining performance obligations as of the end of each reporting period or when the Company expects to recognize the revenue.
As of March 31, 2021,2022, Centuri had 18 contracts29 contracts with an original duration of more than one year. The aggregate amount of the transaction price allocated to the unsatisfied performance obligations of these contracts as of March 31, 20212022 was $48.7 million.$205.6 million. Centuri expects to recognize the remaining performance obligationsobligations over approximately the next twothree years; however,however, the timing of that recognition is largely within the control of the customer, including when the necessary equipment and materials required to complete the work are provided by the customer.
Utility infrastructure services contracts receivable consists of the following:
(Thousands of dollars)(Thousands of dollars)March 31, 2021December 31, 2020(Thousands of dollars)March 31, 2022December 31, 2021
Billed on completed contracts and contracts in progressBilled on completed contracts and contracts in progress$193,042 $273,778 Billed on completed contracts and contracts in progress$308,798 $292,770 
Other receivablesOther receivables5,789 6,692 Other receivables1,430 3,492 
Contracts receivable, grossContracts receivable, gross198,831 280,470 Contracts receivable, gross310,228 296,262 
Allowance for doubtful accountsAllowance for doubtful accounts(1,474)(2,154)Allowance for doubtful accounts(352)(257)
Contracts receivable, netContracts receivable, net$197,357 $278,316 Contracts receivable, net$309,876 $296,005 

Pipeline and Storage Segment:
MountainWest derives revenue on the basis of services rendered, commodities delivered, or contracts settled and includes amounts yet to be billed to customers. MountainWest generates revenue and earnings from annual reservation payments under firm peaking storage and firm transportation contracts. Straight-fixed-variable rate designs are used to allow for recovery of
20

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  March 31, 2022

substantially all fixed costs in demand or reservation charges, thereby reducing the earnings impact of volume changes on gas transportation and storage operations.
MountainWest receives upfront payment for certain storage services it provides to customers, which are considered to be contract liabilities. These payments are amortized to revenue over the term of the contract.
The primary types of sales and service activities reported as revenue from contracts with customers are FERC-regulated gas transportation and storage service, and to a lesser extent, natural gas liquid (“NGL”) revenues consisting primarily of NGL processing services, and other revenue (consisting of natural gas sales, as well as services related to gathering and processing activities and miscellaneous service revenue).
Transportation and storage contracts are primarily stand-ready service contracts that include fixed reservation and variable usage fees. Fixed fees are recognized ratably over the life of the contract as the stand-ready performance obligations are satisfied, while variable usage fees are recognized when MountainWest has a right to consideration from a customer in an amount that corresponds directly with the value to the customer of the performance obligation completed to date. Substantially all of MountainWest’s revenues are derived from performance obligations satisfied over time, rather than recognized at a single point in time. Payment for most sales and services varies by contract type, but is typically due within a month of billing.
MountainWest typically receives or retains NGLs and natural gas from customers when providing natural gas processing, transportation, or storage services. MountainWest records the fair value of NGLs received as service revenue recognized over time and recognizes revenue from the subsequent sale of the NGLs to customers upon delivery. MountainWest typically retains some natural gas under certain transportation service arrangements, intended to facilitate performance of the service and allow for natural losses that occur. As the intent of the retention amount is to enable fulfillment of the contract rather than to provide compensation for services, the fuel allowance is not included in revenue.
MountainWest Regulated operations revenues on the Condensed Consolidated Statements of Income of the Company include revenue from contracts with customers, which is shown below, disaggregated by categories of sales and service activities.
Three Months Ended
March 31,
(Thousands of dollars)2022
Regulated gas transportation and storage revenues$61,977 
NGL revenues1,493 
Other revenues3,479 
Revenue from contracts with customers66,949 
Other revenues44 
Total Regulated operations revenues$66,993 
MountainWest has certain multi-year contracts with fixed-price performance obligations that were unsatisfied (or partially unsatisfied) at the end of the reporting period, whereby revenue will be earned over time as MountainWest stands ready to provide service. These amounts are not material to the financial statements overall. MountainWest also has certain contract liabilities related to consideration received from customers with an obligation to transfer goods or services subsequent to the balance sheet date, amounts for which are generally consistent between December 31, 2021 and March 31, 2022 and are not material.

21

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONMarch 31, 2022

Note 4 – Common Stock
Only sharesShares of the Company’s common stock are publicly traded on the New York Stock Exchange, under the ticker symbol “SWX.” Share-based compensation related to Southwest and Centuri is based on stock awards to be issued in shares of Southwest Gas Holdings, Inc.
On MayApril 8, 2019,2021, the Company filed withentered into a Sales Agency Agreement between the SECCompany and BNY Mellon Capital Markets, LLC and J.P. Morgan Securities LLC (the “Equity Shelf Program”) for the offer and sale of up to $500 million of common stock from time to time in an at-the-market offering program. The shares are issued pursuant to the Company’s automatic shelf registration statement on Form S-3 (File No. 333-231297)333-251074), which became effective upon filing, foror “the Universal Shelf.” There was no activity in the offer and sale of up to $300 million of common stock from time to time in at-the-market offerings underEquity Shelf Program during the prospectus included therein and in accordance with the Sales Agency Agreement, dated May 8, 2019, between the Company and BNY Mellon Capital Markets, LLC (the “Equity Shelf Program”).quarter ended March 31, 2022. The following table provides the life-to-date activity under the Equity Shelf Programthat program for the three-month and life-to-date periodsperiod ended March 31, 2021:2022:
Three Months EndedLife-To-Date Ended
March 31, 2021
Gross proceeds$46,448,484 $299,999,974 
Less: agent commissions(464,485)(3,000,000)
Net proceeds$45,983,999 $296,999,974 
Number of shares sold705,957 4,102,414 
Weighted average price per share$65.80 $73.13 
Gross proceeds$158,180,343 
Less: agent commissions(1,581,803)
Net proceeds$156,598,540 
Number of shares sold2,302,407 
Weighted average price per share$68.70 
During the quarter endedAs of March 31, 2021,2022, the Company sold essentially all of the remaininghad approximately $341.8 million in common stock available for sale under the program. Net proceeds from the sale of shares of common stock under the Equity Shelf Program are intended for general corporate purposes, including the acquisition of property for the construction, completion, extension, or improvement of pipeline systems and facilities located in and around the communities served by Southwest.
On April 8, 2021, the Company entered into a Sales Agency Agreement between the Company and BNY Mellon Capital Markets, LLC and J.P. Morgan Securities LLCSouthwest, as well as for the offer and salerepayment or repurchase of up to $500 million of common stockindebtedness (including amounts outstanding from time to time under the credit facilities, senior notes, term loan, or future credit facilities), and to provide for working capital.
In March 2022, the Company issued, through a separate prospectus supplement under the Universal Shelf, an aggregate of 6,325,000 shares of common stock, in a new at-the-marketan underwritten public offering program. The shares will be issued pursuantprice of $74.00 per share, resulting in proceeds to the Company’s automatic shelf registration statement on Form S-3 (File No. 333-251074), which became effective upon filing withCompany of $452,253,312, net of an underwriters’ discount of $15,796,688. The Company used the SEC on December 2, 2020.net proceeds to repay a portion of the outstanding borrowings under the 364-day term loan credit agreement that was used to initially fund the MountainWest acquisition.
During the three months ended March 31, 2021,2022, the Company issued approximately 47,00065,000 shares of common stock through the Restricted Stock/Unit Plan and Omnibus Incentive Plan.
Additionally, during the three months ended March 31, 2021,2022, the Company issued 49,50037,000 shares of common stock through the Dividend Reinvestment and Stock Purchase Plan, raising approximately $3.1 million.$2.5 million.
2122

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  March 31, 20212022

Note 5 – Debt
Long-Term Debt
Long-term debt is recognized in the Company’s and Southwest’s Condensed Consolidated Balance Sheets generally at the carrying value of the obligations outstanding. Details surrounding the fair value as described in Note 1 – Background, Organization, and Summary of Significant Accounting Policies, and individual carrying values of instruments are provided in the table that follows.
March 31, 2021December 31, 2020 March 31, 2022December 31, 2021
Carrying
Amount
Fair
Value
Carrying
Amount
Fair
Value
Carrying
Amount
Fair
Value
Carrying
Amount
Fair
Value
(Thousands of dollars)(Thousands of dollars)(Thousands of dollars)
Southwest Gas Corporation:Southwest Gas Corporation:Southwest Gas Corporation:
Debentures:Debentures:Debentures:
Notes, 6.1%, due 2041Notes, 6.1%, due 2041$125,000 $160,651 $125,000 $174,858 Notes, 6.1%, due 2041$125,000 $146,293 $125,000 $166,380 
Notes, 4.05%, due 2032Notes, 4.05%, due 2032600,000 598,242 — — 
Notes, 3.875%, due 2022Notes, 3.875%, due 2022250,000 256,693 250,000 258,825 Notes, 3.875%, due 2022250,000 249,993 250,000 250,603 
Notes, 4.875%, due 2043Notes, 4.875%, due 2043250,000 288,500 250,000 317,190 Notes, 4.875%, due 2043250,000 272,933 250,000 307,538 
Notes, 3.8%, due 2046Notes, 3.8%, due 2046300,000 306,261 300,000 347,046 Notes, 3.8%, due 2046300,000 276,144 300,000 329,055 
Notes, 3.7%, due 2028Notes, 3.7%, due 2028300,000 324,069 300,000 344,553 Notes, 3.7%, due 2028300,000 303,660 300,000 325,191 
Notes, 4.15%, due 2049Notes, 4.15%, due 2049300,000 324,183 300,000 370,278 Notes, 4.15%, due 2049300,000 296,361 300,000 342,030 
Notes, 2.2%, due 2030Notes, 2.2%, due 2030450,000 438,912 450,000 474,552 Notes, 2.2%, due 2030450,000 398,066 450,000 440,838 
Notes, 3.18%, due 2051Notes, 3.18%, due 2051300,000 246,813 300,000 292,116 
8% Series, due 20268% Series, due 202675,000 95,894 75,000 99,723 8% Series, due 202675,000 86,880 75,000 92,623 
Medium-term notes, 7.78% series, due 2022Medium-term notes, 7.78% series, due 202225,000 26,201 25,000 26,663 Medium-term notes, 7.78% series, due 2022— — 25,000 25,122 
Medium-term notes, 7.92% series, due 2027Medium-term notes, 7.92% series, due 202725,000 32,138 25,000 33,802 Medium-term notes, 7.92% series, due 202725,000 28,987 25,000 31,555 
Medium-term notes, 6.76% series, due 2027Medium-term notes, 6.76% series, due 20277,500 9,127 7,500 9,613 Medium-term notes, 6.76% series, due 20277,500 8,230 7,500 8,949 
Unamortized discount and debt issuance costsUnamortized discount and debt issuance costs(17,501)(17,822)Unamortized discount and debt issuance costs(27,091)(19,959)
2,089,999 2,089,678 2,955,409 2,387,541 
Revolving credit facility and commercial paperRevolving credit facility and commercial paper150,000 150,000 150,000 150,000 Revolving credit facility and commercial paper— — 130,000 130,000 
Industrial development revenue bonds:Industrial development revenue bonds:Industrial development revenue bonds:
Variable-rate bonds:
Tax-exempt Series A, due 2028Tax-exempt Series A, due 202850,000 50,000 50,000 50,000 Tax-exempt Series A, due 202850,000 50,000 50,000 50,000 
2003 Series A, due 20382003 Series A, due 203850,000 50,000 50,000 50,000 2003 Series A, due 203850,000 50,000 50,000 50,000 
2008 Series A, due 20382008 Series A, due 203850,000 50,000 50,000 50,000 2008 Series A, due 203850,000 50,000 50,000 50,000 
2009 Series A, due 20392009 Series A, due 203950,000 50,000 50,000 50,000 2009 Series A, due 203950,000 50,000 50,000 50,000 
Unamortized discount and debt issuance costsUnamortized discount and debt issuance costs(1,411)(1,472)Unamortized discount and debt issuance costs(1,853)(1,938)
198,589 198,528 198,147 198,062 
Less: current maturitiesLess: current maturities(25,000)Less: current maturities(250,000)(275,000)
Long-term debt, less current maturities - Southwest Gas Corporation$2,413,588 $2,438,206 
Centuri:
Centuri term loan facility$222,668 $225,269 $226,648 $230,824 
Unamortized debt issuance costs(750)(820)
221,918 225,828 
Southwest Gas Corporation total long-term debt, less current maturitiesSouthwest Gas Corporation total long-term debt, less current maturities$2,903,556 $2,440,603 
Southwest Gas Holdings, Inc.:Southwest Gas Holdings, Inc.:
Centuri secured term loan facilityCenturi secured term loan facility$1,014,275 $1,000,329 $1,117,138 $1,117,841 
Centuri secured revolving credit facilityCenturi secured revolving credit facility26,163 26,180 26,626 26,645 Centuri secured revolving credit facility108,035 108,060 103,329 103,749 
Centuri other debt obligations77,235 78,378 81,973 84,246 
MountainWest unsecured senior notes, 3.53%, due in 2028MountainWest unsecured senior notes, 3.53%, due in 2028102,001 95,819 102,078 102,078 
MountainWest unsecured senior notes, 4.875%, due in 2041MountainWest unsecured senior notes, 4.875%, due in 2041199,765 176,488 199,926 199,926 
MountainWest unsecured senior notes, 3.91%, due in 2038MountainWest unsecured senior notes, 3.91%, due in 2038147,760 131,379 147,735 147,735 
Other debt obligationsOther debt obligations148,981 142,712 51,665 50,003 
Unamortized discount and debt issuance costsUnamortized discount and debt issuance costs(23,546)(24,466)
Less: current maturitiesLess: current maturities(42,334)(40,433)Less: current maturities(41,069)(22,324)
Long-term debt, less current maturities - Centuri$282,982 $293,994 
Consolidated Southwest Gas Holdings, Inc.:
Southwest Gas Corporation long-term debt$2,438,588 $2,438,206 
Centuri long-term debt325,316 334,427 
Less: current maturities(67,334)(40,433)
Long-term debt, less current maturities - Southwest Gas Holdings, Inc.$2,696,570 $2,732,200 
Southwest Gas Holdings, Inc. total long-term debt, less current maturitiesSouthwest Gas Holdings, Inc. total long-term debt, less current maturities$4,559,758 $4,115,684 
2223

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  March 31, 20212022

The fair values of Southwest's revolving credit facility and IDRBs are categorized as Level 1 based on the FASB’s fair value hierarchy, due to Southwest’s ability to access similar debt arrangements at measurement dates with comparable terms, including variable/market rates. The fair values of Southwest’s debentures (which include senior and medium-term notes) were determined utilizing a market-based valuation approach, where fair values are determined based on evaluated pricing data, and as such are categorized as Level 2 in the hierarchy. Centuri's secured revolving credit and term loan facility and other debt obligations (not actively traded) are categorized as Level 3; fair values were based on a conventional discounted cash flow methodology utilizing current market pricing yield curves.
Southwest has a $400 million credit facility that is scheduled to expire in April 2025. Southwest designates $150 million of associated capacity as long-term debt and the remaining $250 million for working capital purposes. Interest rates for the credit facility are calculated at either LIBORthe Secured Overnight Financing Rate (“SOFR”) or an “alternate base rate,” plus in each case an applicable margin that is determined based on Southwest’s senior unsecured debt rating. At March 31, 2021,2022, the applicable margin is 1%1.125% for loans bearing interest with reference to LIBORSOFR and 0%0.125% for loans bearing interest with reference to the alternative base rate. At March 31, 2021, 2022,$150 million wasno borrowings were outstanding on the long-term portion (including $50 million(including under the commercial paper program, discussed below) of the facility and $17 million of borrowings were outstandingor on the short-term portion of this credit facility discussed below.
Southwest has a $50 million commercial paper program. Issuances under the commercial paper program are supported by Southwest’s revolving credit facility and, therefore, do not represent additional borrowing capacity under the credit facility. Borrowings under the commercial paper program are designated as long-term debt. Interest rates for the program are calculated at the then current commercial paper rate. At March 31, 2021,2022, as noted above, $50 millionno of borrowings were outstanding under the commercial paper program.
In March 2022, Southwest issued $600 million aggregate principal amount of 4.05% Senior Notes at a discount of 0.65%. The notes will mature in March 2032. Southwest used the net proceeds to redeem the $250 million 3.875% notes due in April 2022 and to repay outstanding amounts under its credit facility, with the remaining net proceeds used for general corporate purposes.
Centuri has a $590 million senior$1.545 billion secured revolving credit and term loan multi-currency facility. Amounts can be borrowed in either Canadian or U.S. dollars. The revolving credit facility scheduled to expirematures on August 27, 2026 and the term loan facility matures on August 27, 2028. Interest rates for the revolving credit facility and term loan facility are based on either a “base rate” or LIBOR, plus an applicable margin in November 2023.either case. The capacity of the line of credit portion of the facility is $325$400 million; related amounts borrowed and repaid are available to be re-borrowed. The term loan portion of the facility has a limit of approximately $265 million. $1.145 billion. The $590 million facility isobligations under the credit agreement are secured by present and future ownership interests in substantially all direct and indirect subsidiaries of Centuri, substantially all of Centuri’s assets except those explicitly excluded under the termstangible and intangible personal property of each borrower, certain of their direct and indirect subsidiaries, and all products, profits, and proceeds of the agreement (including owned real estate and certain certificated vehicles).foregoing. Centuri’s assets securing the facility at March 31, 20212022 totaled $1.32.4 billion. At March 31, 20212022, , $249 million$1.122 billion in borrowingsborrowings were outstanding under Centuri’s combined secured revolving credit and term loan facility. During March 2022, Centuri utilized proceeds of approximately $100 million in fixed-rate term loans secured by owned vehicles and equipment to repay a corresponding amount outstanding under the term loan facility.
MountainWest has 2 private placement unsecured senior notes and a public unsecured senior note, with a combined carrying value of $449.5 million and aggregate principal amount of $430 million. The carrying value is higher than the principal balance as amounts outstanding were recorded at their fair values as of the December 31, 2021 acquisition date of the MountainWest entities.
Short-Term Debt
Southwest Gas Holdings, Inc. has a $100$200 million credit facility that is scheduled to expire in April 2025December 2026 and is primarily used for short-term financing needs. Interest rates for the credit facility are calculated at either SOFR or the “alternate base rate” plus in each case an applicable margin. There was $43$69 million outstanding under this credit facility as of March 31, 2021.2022.
UnderAs indicated above, under Southwest’s $400 million credit facility, Southwest had $17 million inno short-term borrowings were outstanding at March 31, 2021.2022.
In March 2021,2022, Southwest issued aamended its $250 million Term Loan, that maturesextending the maturity date to March 22, 2022.21, 2023 and replacing LIBOR interest rate benchmarks with SOFR interest rate benchmarks. The proceeds were originally used to fund the increased cost of natural gas supply during the month of February 2021, caused by extreme weather conditions in the central U.S. (see Deferred Purchased Gas CostsManagement extended the maturity date to fund recent increases in Note 1 – Background, Organization, and Summary of Significant Accounting Policies).gas purchase costs, as reflected in the PGA. Interest rates for the amended term loan are calculated at either LIBORSOFR or an “alternate base rate,” plus in each case an applicable margin that is determined based on Southwest’s senior unsecured long-term debt rating. The applicable margin ranges from 0.550% to 1.000% for loans bearing interest with reference to LIBORSOFR and 0.000% for loans bearing interest with reference to an alternate base rate. The effective interest rate was 0.77% at March 31, 2021. Theamended agreement contains a financial covenant requiring Southwest to maintain a ratio of funded debt to total capitalization not to exceed 0.70 to 1.00 as of the end of any quarter of any fiscal year.
In November 2021, Southwest Gas Holdings, Inc. entered into a 364-day term loan credit agreement (the “Credit Agreement”). The Credit Agreement provided for a $1.6 billion delayed-draw term loan (the “Term Loan Facility”) to fund and to pay fees, commissions, and expenses related to the Term Loan Facility and the acquisition of the equity interests in MountainWest (refer to Note 8 - Business Acquisitions). The Term Loan Facility was funded on December 31, 2021, and matures on December 30, 2022. Interest rates for the Term Loan Facility are based on either the “base rate” or LIBOR, plus an applicable margin. There was $1.16 billion outstanding under the Term Loan Facility as of March 31, 2022.
24

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONMarch 31, 2022

The borrowings under the term loan facility to temporarily finance the acquisition of MountainWest created a negative working capital condition for the Company, which as of March 31, 2022 is approximately $584 million. As of May 10, 2022, the Company does not have sufficient liquidity or capital resources to repay the term loan facility without issuing new debt or equity. Management intends to issue long-term debt to permanently refinance the remaining portion of the term loan facility.
Management believes that its refinancing plan is probable based on the Company’s ability to generate consistent cash flows, its current credit ratings, its relationships with its lenders and its prior history of successfully raising debt and equity necessary to fund its acquisitions and operations. As such, management has concluded that the Company can satisfy its obligations for at least the next twelve months from the issuance date of these financial statements.
The Company’s ability to access capital markets or to otherwise obtain sufficient financing may be affected by future conditions. If the Company is unable to execute its plan to refinance debt obligations, the Company’s credit facility could be terminated, and amounts due under its revolver and other borrowing arrangements could be declared immediately due and payable.
LIBOR
Certain rates established at LIBOR isare scheduled to be discontinued as a benchmark or reference rate after 2021.2021, while other LIBOR-based rates are scheduled to be discontinued after June 2023. As of March 31, 2022, the Company had $2.17 billion in aggregate outstanding borrowings under Centuri’s combined facility and Southwest Gas Holdings, Inc.’s Term Loan Facility. Southwest had no outstanding borrowings or variable rate debt agreements with reference to LIBOR as of March 31, 2022. In order to mitigate the impact of a discontinuance on the Company’s and Southwest’s financial condition and results of operations of the Company, management will monitor developments and work with lenders to determine the appropriate replacement/alternative reference rate for variable rate debt. At this time the Company and Southwest can provide no assurances as to the impact a LIBOR discontinuance will have on their financial condition or results of operations. Any alternative rate may be less predictable or less attractive than LIBOR.
2325

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  March 31, 20212022

Note 6 – Other Comprehensive Income and Accumulated Other Comprehensive Income
The following information presents the Company’s Other comprehensive income (loss), both before and after-tax impacts, within the Condensed Consolidated Statements of Comprehensive Income, which also impact Accumulated other comprehensive income (“AOCI”) in the Condensed Consolidated Balance Sheets and the Condensed Consolidated Statements of Equity.
Related Tax Effects Allocated to Each Component of Other Comprehensive Income (Loss)
Three Months Ended
March 31, 2021
Three Months Ended
March 31, 2020
Three Months Ended
March 31, 2022
Three Months Ended
March 31, 2021
(Thousands of dollars)(Thousands of dollars)Before-
Tax
Amount
Tax
(Expense)
or Benefit (1)
Net-of-
Tax
Amount
Before-
Tax
Amount
Tax
(Expense)
or Benefit (1)
Net-of-
Tax
Amount
(Thousands of dollars)Before-
Tax
Amount
Tax
(Expense)
or Benefit (1)
Net-of-
Tax
Amount
Before-
Tax
Amount
Tax
(Expense)
or Benefit (1)
Net-of-
Tax
Amount
Defined benefit pension plans:Defined benefit pension plans:Defined benefit pension plans:
Amortization of prior service costAmortization of prior service cost$240 $(58)$182 $289 $(69)$220 Amortization of prior service cost$44 $(11)$33 $240 $(58)$182 
Amortization of net actuarial (gain)/lossAmortization of net actuarial (gain)/loss11,149 (2,675)8,474 9,458 (2,270)7,188 Amortization of net actuarial (gain)/loss8,705 (2,089)6,616 11,149 (2,675)8,474 
Regulatory adjustmentRegulatory adjustment(9,575)2,298 (7,277)(8,395)2,015 (6,380)Regulatory adjustment(7,268)1,745 (5,523)(9,575)2,298 (7,277)
Pension plans other comprehensive income (loss)Pension plans other comprehensive income (loss)1,814 (435)1,379 1,352 (324)1,028 Pension plans other comprehensive income (loss)1,481 (355)1,126 1,814 (435)1,379 
FSIRS (designated hedging activities):FSIRS (designated hedging activities):FSIRS (designated hedging activities):
Amounts reclassified into net incomeAmounts reclassified into net income544 (131)413 837 (201)636 Amounts reclassified into net income545 (129)416 544 (131)413 
FSIRS other comprehensive income (loss)FSIRS other comprehensive income (loss)544 (131)413 837 (201)636 FSIRS other comprehensive income (loss)545 (129)416 544 (131)413 
Total other comprehensive income (loss) - Southwest Gas CorporationTotal other comprehensive income (loss) - Southwest Gas Corporation2,358 (566)1,792 2,189 (525)1,664 Total other comprehensive income (loss) - Southwest Gas Corporation2,026 (484)1,542 2,358 (566)1,792 
Foreign currency translation adjustments:Foreign currency translation adjustments:Foreign currency translation adjustments:
Translation adjustmentsTranslation adjustments823 823 (4,005)(4,005)Translation adjustments1,247 — 1,247 823 — 823 
Foreign currency other comprehensive income (loss)Foreign currency other comprehensive income (loss)823 823 (4,005)(4,005)Foreign currency other comprehensive income (loss)1,247 — 1,247 823 — 823 
Total other comprehensive income (loss) - Southwest Gas Holdings, Inc.Total other comprehensive income (loss) - Southwest Gas Holdings, Inc.$3,181 $(566)$2,615 $(1,816)$(525)$(2,341)Total other comprehensive income (loss) - Southwest Gas Holdings, Inc.$3,273 $(484)$2,789 $3,181 $(566)$2,615 
Twelve Months Ended
March 31, 2021
Twelve Months Ended
March 31, 2020
Twelve Months Ended
March 31, 2022
Twelve Months Ended
March 31, 2021
(Thousands of dollars)(Thousands of dollars)Before-
Tax
Amount
Tax
(Expense)
or Benefit (1)
Net-of-
Tax
Amount
Before-
Tax
Amount
Tax
(Expense)
or Benefit (1)
Net-of-
Tax
Amount
(Thousands of dollars)Before-
Tax
Amount
Tax
(Expense)
or Benefit (1)
Net-of-
Tax
Amount
Before-
Tax
Amount
Tax
(Expense)
or Benefit (1)
Net-of-
Tax
Amount
Defined benefit pension plans:Defined benefit pension plans:Defined benefit pension plans:
Net actuarial gain/(loss)Net actuarial gain/(loss)$(57,539)$13,809 $(43,730)$(71,087)$17,061 $(54,026)Net actuarial gain/(loss)$59,176 $(14,202)$44,974 $(57,539)$13,809 $(43,730)
Amortization of prior service costAmortization of prior service cost1,106 (266)840 1,243 (298)945 Amortization of prior service cost763 (183)580 1,106 (266)840 
Amortization of net actuarial (gain)/lossAmortization of net actuarial (gain)/loss39,521 (9,484)30,037 26,990 (6,477)20,513 Amortization of net actuarial (gain)/loss42,153 (10,117)32,036 39,521 (9,484)30,037 
Prior service cost(1,878)452 (1,426)
Regulatory adjustmentRegulatory adjustment6,255 (1,502)4,753 33,896 (8,136)25,760 Regulatory adjustment(85,887)20,614 (65,273)6,255 (1,502)4,753 
Pension plans other comprehensive income (loss)Pension plans other comprehensive income (loss)(10,657)2,557 (8,100)(10,836)2,602 (8,234)Pension plans other comprehensive income (loss)16,205 (3,888)12,317 (10,657)2,557 (8,100)
FSIRS (designated hedging activities):FSIRS (designated hedging activities):FSIRS (designated hedging activities):
Amounts reclassified into net incomeAmounts reclassified into net income2,954 (710)2,244 3,345 (803)2,542 Amounts reclassified into net income2,175 (520)1,655 2,954 (710)2,244 
FSIRS other comprehensive income (loss)FSIRS other comprehensive income (loss)2,954 (710)2,244 3,345 (803)2,542 FSIRS other comprehensive income (loss)2,175 (520)1,655 2,954 (710)2,244 
Total other comprehensive income (loss) - Southwest Gas CorporationTotal other comprehensive income (loss) - Southwest Gas Corporation(7,703)1,847 (5,856)(7,491)1,799 (5,692)Total other comprehensive income (loss) - Southwest Gas Corporation18,380 (4,408)13,972 (7,703)1,847 (5,856)
Foreign currency translation adjustments:Foreign currency translation adjustments:Foreign currency translation adjustments:
Translation adjustmentsTranslation adjustments6,541 6,541 (2,758)(2,758)Translation adjustments444 — 444 6,541 — 6,541 
Foreign currency other comprehensive income (loss)Foreign currency other comprehensive income (loss)6,541 6,541 (2,758)(2,758)Foreign currency other comprehensive income (loss)444 — 444 6,541 — 6,541 
Total other comprehensive income (loss) - Southwest Gas Holdings, Inc.Total other comprehensive income (loss) - Southwest Gas Holdings, Inc.$(1,162)$1,847 $685 $(10,249)$1,799 $(8,450)Total other comprehensive income (loss) - Southwest Gas Holdings, Inc.$18,824 $(4,408)$14,416 $(1,162)$1,847 $685 
(1)Tax amounts are calculated using a 24% rate. The Company has elected to indefinitely reinvest, in Canada, the earnings of Centuri’s Canadian subsidiaries, in Canada, thus precluding deferred taxes on such earnings. As a result of this assertion, and no repatriation of earnings anticipated, the Company is not recognizing a tax effect or presenting a tax expense or benefit for currency translation adjustments reported in Other comprehensive income (loss).
Approximately $1.7 millionThe remaining balance of realized losses (net of tax) related to the remaining balance of Southwest’s previously settled forward-starting interest rate swap (“FSIRS”), included in AOCI at March 31, 2021, will be2022, was reclassified into interest expense withinduring the next 12three months as the related interest payments on long-term debt occur.ended March 31, 2022.

2426

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  March 31, 20212022

The following table represents a rollforward of AOCI, presented on the Company’s Condensed Consolidated Balance Sheets and its Condensed Consolidated Statements of Equity:
Defined Benefit PlansFSIRSForeign Currency Items  Defined Benefit PlansFSIRSForeign Currency Items 
(Thousands of dollars)(Thousands of dollars)Before-TaxTax
(Expense)
Benefit (4)
After-TaxBefore-TaxTax
(Expense)
Benefit (4)
After-TaxBefore-TaxTax
(Expense)
Benefit
After-TaxAOCI(Thousands of dollars)Before-TaxTax
(Expense)
Benefit (4)
After-TaxBefore-TaxTax
(Expense)
Benefit (4)
After-TaxBefore-TaxTax
(Expense)
Benefit
After-TaxAOCI
Beginning Balance AOCI December 31, 2020$(77,720)$18,653 $(59,067)$(2,719)$651 $(2,068)$132 $— $132 $(61,003)
Beginning Balance AOCI December 31, 2021Beginning Balance AOCI December 31, 2021$(61,182)$14,685 $(46,497)$(545)$129 $(416)$152 $— $152 $(46,761)
Translation adjustmentsTranslation adjustments— — — — — — 823 — 823 823 Translation adjustments— — — — — — 1,247 — 1,247 1,247 
Other comprehensive income (loss) before reclassificationsOther comprehensive income (loss) before reclassifications— — — — — — 823 — 823 823 Other comprehensive income (loss) before reclassifications— — — — — — 1,247 — 1,247 1,247 
FSIRS amount reclassified from AOCI (1)FSIRS amount reclassified from AOCI (1)— — — 544 (131)413 — — — 413 FSIRS amount reclassified from AOCI (1)— — — 545 (129)416 — — — 416 
Amortization of prior service cost (2)Amortization of prior service cost (2)240 (58)182 — — — — — — 182 Amortization of prior service cost (2)44 (11)33 — — — — — — 33 
Amortization of net actuarial loss (2)Amortization of net actuarial loss (2)11,149 (2,675)8,474 — — — — — — 8,474 Amortization of net actuarial loss (2)8,705 (2,089)6,616 — — — — — — 6,616 
Regulatory adjustment (3)Regulatory adjustment (3)(9,575)2,298 (7,277)— — — — — — (7,277)Regulatory adjustment (3)(7,268)1,745 (5,523)— — — — — — (5,523)
Net current period other comprehensive income (loss) attributable to Southwest Gas Holdings, Inc.Net current period other comprehensive income (loss) attributable to Southwest Gas Holdings, Inc.1,814 (435)1,379 544 (131)413 823 — 823 2,615 Net current period other comprehensive income (loss) attributable to Southwest Gas Holdings, Inc.1,481 (355)1,126 545 (129)416 1,247 — 1,247 2,789 
Ending Balance AOCI March 31, 2021$(75,906)$18,218 $(57,688)$(2,175)$520 $(1,655)$955 $— $955 $(58,388)
Ending Balance AOCI March 31, 2022Ending Balance AOCI March 31, 2022$(59,701)$14,330 $(45,371)$— $— $— $1,399 $— $1,399 $(43,972)
(1)The FSIRS reclassification amount is included in Net interest deductions on the Company’s Condensed Consolidated Statements of Income.
(2)These AOCI components are included in the computation of net periodic benefit cost (see Note 2 – Components of Net Periodic Benefit Cost for additional details).
(3)The regulatory adjustment represents the portion of the activity above that is expected to be recovered through rates in the future (the related regulatory asset is included in Deferred charges and other assets on the Company’s Condensed Consolidated Balance Sheets).
(4)Tax amounts are calculated using a 24% rate.

The following table represents a rollforward of AOCI, presented on Southwest’s Condensed Consolidated Balance Sheets:
Defined Benefit PlansFSIRS  Defined Benefit PlansFSIRS 
(Thousands of dollars)(Thousands of dollars)Before-TaxTax
(Expense)
Benefit (8)
After-TaxBefore-TaxTax
(Expense)
Benefit (8)
After-TaxAOCI(Thousands of dollars)Before-TaxTax
(Expense)
Benefit (8)
After-TaxBefore-TaxTax
(Expense)
Benefit (8)
After-TaxAOCI
Beginning Balance AOCI December 31, 2020$(77,720)$18,653 $(59,067)$(2,719)$651 $(2,068)$(61,135)
Beginning Balance AOCI December 31, 2021Beginning Balance AOCI December 31, 2021$(61,182)$14,685 $(46,497)$(545)$129 $(416)$(46,913)
FSIRS amount reclassified from AOCI (5)FSIRS amount reclassified from AOCI (5)— — — 544 (131)413 413 FSIRS amount reclassified from AOCI (5)— — — 545 (129)416 416 
Amortization of prior service cost (6)Amortization of prior service cost (6)240 (58)182 — — — 182 Amortization of prior service cost (6)44 (11)33 — — — 33 
Amortization of net actuarial loss (6)Amortization of net actuarial loss (6)11,149 (2,675)8,474 — — — 8,474 Amortization of net actuarial loss (6)8,705 (2,089)6,616 — — — 6,616 
Regulatory adjustment (7)Regulatory adjustment (7)(9,575)2,298 (7,277)— — — (7,277)Regulatory adjustment (7)(7,268)1,745 (5,523)— — — (5,523)
Net current period other comprehensive income attributable to Southwest Gas CorporationNet current period other comprehensive income attributable to Southwest Gas Corporation1,814 (435)1,379 544 (131)413 1,792 Net current period other comprehensive income attributable to Southwest Gas Corporation1,481 (355)1,126 545 (129)416 1,542 
Ending Balance AOCI March 31, 2021$(75,906)$18,218 $(57,688)$(2,175)$520 $(1,655)$(59,343)
Ending Balance AOCI March 31, 2022Ending Balance AOCI March 31, 2022$(59,701)$14,330 $(45,371)$— $— $— $(45,371)
(5)    The FSIRS reclassification amount is included in Net interest deductions on Southwest’s Condensed Consolidated Statements of Income.
(6)These AOCI components are included in the computation of net periodic benefit cost (see Note 2 – Components of Net Periodic Benefit Cost for additional details).
(7)The regulatory adjustment represents the portion of the activity above that is expected to be recovered through rates in the future (the related regulatory asset is included in Deferred charges and other assets on Southwest’s Condensed Consolidated Balance Sheets).
(8)Tax amounts are calculated using a 24% rate.
The following table represents amounts (before income tax impacts) included in AOCI (in the tables above), that have not yet been recognized in net periodic benefit cost:
(Thousands of dollars)March 31, 2021December 31, 2020
Net actuarial loss$(491,634)$(502,783)
Prior service cost(2,247)(2,487)
Less: amount recognized in regulatory assets417,975 427,550 
Recognized in AOCI$(75,906)$(77,720)

2527

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  March 31, 20212022

The following table represents amounts (before income tax impacts) included in AOCI (in the tables above), that have not yet been recognized in net periodic benefit cost:
(Thousands of dollars)March 31, 2022December 31, 2021
Net actuarial loss$(390,305)$(399,010)
Prior service cost(1,484)(1,528)
Less: amount recognized in regulatory assets332,088 339,356 
Recognized in AOCI$(59,701)$(61,182)
Note 7 – Segment Information
As a result of the MountainWest acquisition on December 31, 2021, management updated its segment reporting from the historical presentation of 2 reportable segments to 3 reportable segments, with MountainWest presented as the pipeline and storage segment. Southwest comprises the natural gas distribution segment and Centuri comprises the utility infrastructure services segment.
Centuri accounts for the services provided to Southwest at contractual prices at contract inception. Accounts receivable for these services, which are not eliminated during consolidation, are presented in the table below:
(Thousands of dollars)(Thousands of dollars)March 31, 2021December 31, 2020(Thousands of dollars)March 31, 2022December 31, 2021
Centuri accounts receivable for services provided to SouthwestCenturi accounts receivable for services provided to Southwest$11,344 $13,956 Centuri accounts receivable for services provided to Southwest$15,522 $15,166 

The Company has 2 reportable segments: natural gas operations and utility infrastructure services. Southwest has a single reportable segment that is referred to herein as the natural gas operations segment of the Company. In order to reconcile (below) to net income as disclosed in the Condensed Consolidated Statements of Income, an Other column is included associated with impacts of corporate and administrative activities related to Southwest Gas Holdings, Inc. The financial information pertaining to the natural gas operations anddistribution, utility infrastructure services, and pipeline and storage segments isare as follows:
(Thousands of dollars)Natural Gas
Operations
Utility Infrastructure
Services
OtherTotal
Three Months Ended March 31, 2021
Revenues from external customers$521,932 $339,772 $— $861,704 
Intersegment revenues24,203 — 24,203 
Total$521,932 $363,975 $— $885,907 
Segment net income (loss)$118,715 $(859)$(563)$117,293 
Three Months Ended March 31, 2020
Revenues from external customers$502,827 $300,291 $— $803,118 
Intersegment revenues33,202 — 33,202 
Total$502,827 $333,493 $— $836,320 
Segment net income (loss)$83,599 $(10,204)$(853)$72,542 
(Thousands of dollars)Natural Gas
Operations
Utility Infrastructure
Services
OtherTotal
Twelve Months Ended March 31, 2021
Revenues from external customers$1,369,690 $1,852,910 $— $3,222,600 
Intersegment revenues125,860 — 125,860 
Total$1,369,690 $1,978,770 $— $3,348,460 
Segment net income (loss)$194,234 $84,207 $(1,366)$277,075 
Twelve Months Ended March 31, 2020
Revenues from external customers$1,351,089 $1,618,354 $— $2,969,443 
Intersegment revenues153,255 — 153,255 
Total$1,351,089 $1,771,609 $— $3,122,698 
Segment net income (loss)$143,381 $50,231 $(1,943)$191,669 

(Thousands of dollars)Natural Gas
Distribution
Utility Infrastructure
Services
Pipeline and StorageOtherTotal
Three Months Ended March 31, 2022
Revenues from external customers$676,539 $495,544 $66,993 $— $1,239,076 
Intersegment revenues— 28,333 — — 28,333 
Total$676,539 $523,877 $66,993 $— $1,267,409 
Segment net income (loss)$111,795 $(23,486)$16,930 $(9,061)$96,178 
Three Months Ended March 31, 2021
Revenues from external customers$521,932 $339,772 $— $— $861,704 
Intersegment revenues— 24,203 — — 24,203 
Total$521,932 $363,975 $— $— $885,907 
Segment net income (loss)$118,715 $(859)$— $(563)$117,293 
2628

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  March 31, 20212022

(Thousands of dollars)Natural Gas
Distribution
Utility Infrastructure
Services
Pipeline and StorageOtherTotal
Twelve Months Ended March 31, 2022
Revenues from external customers$1,676,397 $2,212,087 $66,993 $— $3,955,477 
Intersegment revenues— 106,476 — — 106,476 
Total$1,676,397 $2,318,563 $66,993 $— $4,061,953 
Segment net income (loss)$180,215 $17,793 $16,930 $(35,274)$179,664 
Twelve Months Ended March 31, 2021
Revenues from external customers$1,369,690 $1,852,910 $— $— $3,222,600 
Intersegment revenues— 125,860 — — 125,860 
Total$1,369,690 $1,978,770 $— $— $3,348,460 
Segment net income (loss)$194,234 $84,207 $— $(1,366)$277,075 
The corporate and administrative activities for Southwest Gas Holdings, Inc. in the three- and twelve-month periods ended March 31, 2022 include expenses incurred related to shareholder activism, in addition to expenses and financing costs for the MountainWest acquisition, as well as expenses for services performed following December 31, 2021, but related to the acquisition.
Note 8 - Business Acquisitions
In August 2021, the Company, through its subsidiaries, led principally by Centuri, completed the acquisition of Drum, including its primary subsidiary, Riggs Distler. In November 2021, certain members of Riggs Distler management acquired a 1.42% interest in Drum. See the Company’s 2021 Form 10-K for additional information about this acquisition.
Assets acquired and liabilities assumed in the transaction were recorded at their acquisition date fair values. Transaction costs associated with the acquisition were expensed as incurred. The Company’s allocation of the purchase price was based on an evaluation of the appropriate fair values and represented management’s best estimate based on available data (including market data, data regarding customers of the acquired businesses, terms of acquisition-related agreements, analysis of historical and projected results, and other types of data). The analysis included consideration of types of intangibles that were acquired, including customer relationships, trade name, and backlog. Certain payments were estimated as of the acquisition date and were adjusted when amounts were finalized. Further adjustments may still occur. Due to the estimations made, the final purchase accounting has not yet been completed and further refinements may occur, including potential changes to income taxes.
29

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONMarch 31, 2022

The preliminary estimated fair values of assets acquired and liabilities assumed as of August 27, 2021, and as updated through March 31, 2022, are as follows:
(Millions of dollars)Acquisition DateMeasurement Period AdjustmentsRevised Acquisition Date
Cash and cash equivalents$1.9 $— $1.9 
Accounts receivable69.1 (8.6)60.5 
Contract assets40.1 7.4 47.5 
Income taxes receivable, net0.7 — 0.7 
Right of use assets under operating leases1.5 — 1.5 
Prepaid expenses5.2 — 5.2 
Property and equipment118.1 1.2 119.3 
Intangible assets335.0 (31.5)303.5 
Goodwill446.8 2.1 448.9 
Total assets acquired1,018.4 $(29.4)$989.0 
Trade and other payables46.2 — 46.2 
Finance lease obligations27.5 1.2 28.7 
Contract liabilities12.7 — 12.7 
Operating lease obligations1.5 — 1.5 
Other liabilities5.3 (0.9)4.4 
Deferred tax liabilities94.8 (23.4)71.4 
Total liabilities assumed and noncontrolling interest188.0 (23.1)164.9 
Net assets acquired$830.4 $(6.3)$824.1 
The Company incurred and expensed acquisition costs of $14 million, included in Utility infrastructure services expenses in the Company’s Condensed Consolidated Statement of Income for the twelve months ended March 31, 2022. No acquisition-related costs were incurred during the three months ended March 31, 2022, and no significant impacts to earnings resulted from the measurement-period adjustments reflected above.
In December 2021 Southwest Gas Holdings, Inc. completed the acquisition of Dominion Energy Questar Pipeline, LLC and related entities (subsequently rebranded as “MountainWest”), which resulted in MountainWest becoming a wholly owned subsidiary of the Company. See the Company’s 2021 Form 10-K for additional information about this acquisition.
Assets acquired and liabilities assumed in the transaction were recorded at their acquisition date fair values. Transaction costs associated with the acquisition were expensed as incurred. The majority of the operations acquired are subject to FERC rate-regulation and therefore are accounted for pursuant to ASC 980, Regulated Operations. The fair values of MountainWest’s assets and liabilities, subject to rate making and cost recovery provisions, provide revenues derived from costs of service, including a return on investment of assets and liabilities included in rate base. Accordingly, the carrying values of such assets and liabilities were deemed to approximate their fair values. The fair value of the MountainWest assets and liabilities assumed that are not subject to the rate-regulation provisions discussed above include a 50% equity method investment, non-regulated property, plant and equipment, and long-term debt assumed; related fair values were determined using a market approach, income approach, or cost approach, as appropriate. Amounts related to post-closing payments were estimated as of the acquisition date and adjusted when determined during the period ended March 31, 2022. No other measurement period adjustments occurred during the period. However, the final purchase accounting has not yet been completed and further refinements may occur, including finalization of income tax-related amounts.
30

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONMarch 31, 2022

The preliminary estimated fair values of assets acquired and liabilities assumed as of December 31, 2021, and as updated through March 31, 2022, are as follows:
(Millions of dollars)Acquisition DateMeasurement Period AdjustmentsRevised Acquisition Date
Gas plant, net$1,047.4 $— $1,047.4 
Other property and investments51.3 — 51.3 
Cash and cash equivalents17.6 — 17.6 
Accounts receivable, net of allowances26.6 2.9 29.5 
Prepaid and other current assets27.4 — 27.4 
Deferred charges and other assets31.1 — 31.1 
Goodwill986.2 (8.7)977.5 
Deferred income taxes15.4 (1.3)14.1 
Total assets acquired2,203.0 (7.1)2,195.9 
Long-term debt449.7 — 449.7 
Accounts payable7.0 — 7.0 
Deferred purchased gas costs5.7 — 5.7 
Customer deposits3.2 — 3.2 
Accrued general taxes0.4 — 0.4 
Accrued interest4.7 — 4.7 
Other current liabilities14.5 — 14.5 
Accumulated removal costs56.6 — 56.6 
Other deferred credits85.6 — 85.6 
Total liabilities assumed627.4 — 627.4 
Net assets acquired$1,575.6 $(7.1)$1,568.5 
The Company incurred and expensed acquisition costs of $18.5 million for the twelve months ended March 31, 2022, which are included in Operations and maintenance expense on the Company’s Condensed Consolidated Statement of Income. No acquisition-related costs were incurred during the three months ended March 31, 2022 and no impacts to earnings resulted from the measurement-period adjustments reflected above. The Company has a transition services agreement with the sellers for a period of up to twelve months from the acquisition date of December 31, 2021, to continue certain corporate and administrative functions for the entities acquired while MountainWest is established as an independent enterprise.
Note 9 - Subsequent Events
On May 6, 2022, the Company entered into a Cooperation Agreement (the “Cooperation Agreement”) with Carl Icahn and the persons and entities listed therein (collectively, the “Icahn Group”). In accordance with the Cooperation Agreement, John P. Hester, the President and Chief Executive Officer of the Company and Southwest and a member of the Board and the Southwest Board (the “SWG Board” and, together with the Board, the “Southwest Boards”), retired as President and Chief Executive Officer of the Company and resigned from the Southwest Boards, effective as of May 6, 2022. Karen S. Haller, the Company’s former Executive Vice President / Chief Legal & Administrative Officer, was appointed as President and Chief Executive Officer of Southwest, effective as of May 6, 2022, and as a member of the Board, effective immediately following the completion of the Company’s 2022 annual meeting of stockholders (the “2022 Annual Meeting”).
In addition, pursuant to the Cooperation Agreement, the Company has agreed to appoint 3 new directors, Andrew W. Evans, H. Russell Frisby, Jr. and Henry P. Linginfelter (collectively, the “Icahn Designees”), to the Board, effective immediately following the 2022 Annual Meeting, and, unless within 90 days of the date of the Cooperation Agreement, the Board has determined to pursue a spin-off of Centuri to the exclusion of other strategic alternatives, the Icahn Group has the ability to designate a fourth director, Andrew J. Teno, unless Mr. Teno has previously replaced one of the other Icahn Designees, in which case the fourth director will be such Icahn Designee. The Icahn Group’s ability to designate directors to the Board is subject to certain ownership thresholds following the closing of the previously announced tender offer by the Icahn Group to purchase any and all shares of common stock of the Company (the “Offer”).
31

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONMarch 31, 2022

The Cooperation Agreement requires the Board to expand the Strategic Transactions Committee from 3 directors to 6 directors, comprised of the current members of the Strategic Transactions Committee and the 3 Icahn Designees. For so long as the Icahn Group has the ability to designate at least three members of the Board, three of such designees shall be included on the Strategic Transactions Committee. If the Icahn Group may only designate two members of the Board, then both of such designees shall serve on the Strategic Transactions Committee.
In addition, the Cooperation Agreement provides that the Icahn Group will amend the Offer, to (i) provide that the number of shares of common stock to be purchased in the Offer shall not exceed that number of shares of common stock which, together with the shares of Common Stock beneficially owned by the Icahn Group, would exceed 24.9% of the then outstanding shares of Common Stock, (ii) extend the expiration date of the Offer (the “Expiration Date”) to May 19, 2022 and that the Expiration Date shall not be further extended, and (iii) to waive any conditions to the Offer that have not been satisfied and consummate the Offer and pay for the tendered shares of Common Stock as promptly as practicable after the Expiration Date.
Pursuant to the Cooperation Agreement, the Icahn Group caused the parties to the action filed by Icahn Partners LP and Icahn Partners Master Fund LP in the Court of Chancery of the State of Delaware on November 29, 2021 (Civil Action No. 2021-1031-KSJM), naming as defendants the Company and certain directors and officers of the Company, to file a stipulation of dismissal with prejudice, which was entered by the court on May 9, 2022
In connection with the entry into the Cooperation Agreement, the Company entered into Amendment No. 1 to Rights Agreement (the “Rights Agreement Amendment”) by and between the Company and Equiniti Trust Company. The Rights Agreement Amendment amends the Rights Agreement, dated October 10, 2021, to increase the beneficial ownership percentage included in the definition of “Acquiring Person” from 10% to 24.9% and to delete the concept of a “Passive Institutional Investor.”


32

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONMarch 31, 2022

ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS
Southwest Gas Holdings, Inc. is a holding company that owns all of the shares of common stock of Southwest Gas Corporation (“Southwest” or the “natural gas operations”distribution” segment) and, all of the shares of common stock of Centuri Group, Inc. (“Centuri,” or the “utility infrastructure services” segment), as well as all of the membership interests in the newly formed MountainWest Pipelines Holding Company (“MountainWest,” or the “pipeline and storage” segment). Southwest Gas Holdings, Inc. and its subsidiaries are collectively referred to as the “Company.”
The Company completed the acquisition of Dominion Energy Questar Pipeline, LLC (“Questar Pipelines”) and related entities in December 2021. Following the acquisition, the Company formed MountainWest which owns all of the membership interests of Questar Pipelines. In April 2022, the Company completed a general rebranding of the Questar Pipelines entities under the MountainWest name. The acquired operations further diversify the Company’s business including an essential Rocky Mountain energy hub with over 2,000 miles of highly contracted, FERC-regulated interstate natural gas pipelines providing transportation and underground storage services in Utah, Wyoming, and Colorado.
In October 2021, our Board of Directors (the “Board”) authorized and declared a dividend of one preferred stock purchase right for each share of common stock outstanding to stockholders of record at the close of business on October 21, 2021.
In March 2022, the Company announced that the Board had determined to separate Centuri from the Company and authorized management to complete the separation within nine to twelve months from the date of such announcement. Management evaluated various alternatives to determine the optimal structure to maximize stockholder value and subsequently announced the separation structure is expected to be a tax-free spin-off in which stockholders of the Company would receive a prorated dividend of Centuri shares in association with the completion. Then, in April 2022, as a result of interest in the Company well in excess of a tender offer by an activist stockholder (Carl Icahn) to other stockholders, the Board authorized the review of a full range of strategic alternatives intended to maximize stockholder value. As part of this process, a strategic review committee of the Board, consisting entirely of independent directors, will evaluate a sale of the Company, as well as a range of alternatives, including, but not limited to, a separate sale of its business units and/or pursuing the spin-off of Centuri. There can be no assurances that the Company will be able to successfully separate Centuri on the anticipated timeline or at all, nor assurances that other strategic alternatives considered will be executed or maximize value as intended. See “Item 1A - Risk Factors” included elsewhere in this Quarterly Report on Form 10-Q.
As described in Note 9 - Subsequent Events, on May 6, 2022, the Company entered into a Cooperation Agreement with Carl C. Icahn and the persons and entities named therein (the “Icahn Group”). In accordance with the Cooperation Agreement, among other things, (i) Karen S. Haller has replaced John C. Hester as the Company’s President and Chief Executive Officer, (ii) the Icahn Group has certain board designation rights, (iii) the Icahn Group has agreed to terminate its previously announced tender offer, and (iv) the Icahn Group caused its affiliates to file a stipulation of dismissal with prejudice dismissing the action filed by them on November 29, 2021, which was entered by the Delaware Court of Chancery on May 9, 2022. See Note 9 - Subsequent Events for more information.
Southwest is engaged in the business of purchasing, distributing, and transporting natural gas for customers in portions of Arizona, Nevada, and California. Southwest is the largest distributor of natural gas in Arizona, selling and transporting natural gas in most of central and southern Arizona, including the Phoenix and Tucson metropolitan areas. In January 2022, Southwest completed the purchase of the Graham County Utilities, Inc. (“GCU”) gas distribution system, located in Graham County, Arizona. Southwest is also the largest distributor of natural gas in Nevada, serving the majority of southern Nevada, including the Las Vegas metropolitan area, and portions of northern Nevada. In addition, Southwest distributes and transports natural gas for customers in portions of California, including the Lake Tahoe area and the high desert and mountain areas in San Bernardino County. Through its subsidiaries, Southwest operates two federally regulated interstate pipelines serving portions of the foregoing northern territories of Nevada and California.
As of March 31, 2021,2022, Southwest had 2,133,0002,171,000 residential, commercial, industrial, and other natural gas customers, of which 1,138,0001,161,000 customers were located in Arizona, 793,000806,000 in Nevada, and 202,000204,000 in California. In January 2022, approximately 5,300 customers became part of Southwest’s gas distribution operations that were formerly served by GCU. Over the past twelve months, first-time meter sets were approximately 37,000, 38,000, compared to 36,00037,000 for the twelve months ended March 2020. The remaining increase in active customer accounts compared to the March 31, 2020 total of 2,091,000 was primarily due to a management-initiated moratorium on disconnections as a result of the COVID-19 pandemic. As utility service is an essential service to the residents in the states in which Southwest operates, it implemented the moratorium in March 2020 and also ceased charging late fees. Southwest recommenced assessing late fees in Nevada and Arizona in April 2021, with late fees in California expected to recommence in the latter half of 2021. The duration of our moratorium on disconnections for non-payment is currently uncertain. ResidentialResidential and small commercial customers represented over 99% of the total customer base. During the twelve months ended March 31, 2021, 53%2022, 54% of operating margin (gas operating(Regulated operations revenues less the net cost of gas sold) was earned in Arizona, 36%34% in Nevada, and 11%12% in California. During this same period, Southwest earnedearned 85% of its operating margin from residential and small commercial customers, 3%4% from other sales customers, and 12% from11% from transportation customers. While these generalThese patterns are expected to remain materially consistent for the foreseeable future, the continuing COVID-19 pandemic, as discussed further below, could impact these statistics and associated patterns in the short term.future.
33

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONMarch 31, 2022

Southwest recognizes operating revenues from the distribution and transportation of natural gas (and related services) to customers. Operating margin is a financial measure defined by management as gas operatingRegulated operations revenues less the net cost of gas sold. However, operating margin is not specifically defined in accounting principles generally accepted in the United States (“U.S. GAAP”). Thus, operating margin is considered a non-GAAP measure. Management uses this financial measure because natural gas operatingRegulated operations revenues include the net cost of gas sold, which is a tracked cost that is passed through to customers without markup under purchased gas adjustment (“PGA”) mechanisms. Fluctuations in the net cost of gas sold impact revenues on a dollar-for-dollar basis, but do not impact operating margin or operating income. Therefore, management believes operating margin provides investors and other interested parties with useful and relevant information to analyze Southwest’s financial performance in a rate-regulated environment. The principal factors affecting changes in operating margin are general rate relief (including impacts of infrastructure trackers) and customer growth. Commission decisions on the amount and timing of such relief may impact our earnings. Refer to the Summary Operating Results table below for a reconciliation of revenuesgross margin to operating margin, and refer to Rates and Regulatory Proceedings in this Management’s Discussion and Analysis, for details of various rate proceedings.
The demand for natural gas is seasonal, with greater demand in the colder winter months and decreased demand in the warmer summer months. All of Southwest’s service territories have decoupled rate structures (alternative revenue programs), which are designed to eliminate the direct link between volumetric sales and revenue, thereby mitigating the impacts of unusual weather variability and conservation on operating margin, allowing Southwest to pursue energy efficiency initiatives.
Centuri is a comprehensive utilitystrategic infrastructure services enterprise dedicatedcompany that partners with regulated utilities to delivering a diverse arraybuild and maintain the energy network that powers millions of solutionshomes and businesses across the United States (“U.S.”) and Canada. With an unwavering commitment to North America’sserve as long-term partners to customers and communities, Centuri’s employees enable regulated utilities to safely and reliably deliver natural gas and electric providers. Centuri derives revenue primarily from installation, replacement, repair, and maintenance of energy distribution systems.electricity, as well as achieve their goals for environmental sustainability. Centuri operates in 5570 primary locations across 4044 states and provinces in the United States (“U.S.”) and Canada. Centuri operates in the U.S., primarily as NPL, Neuco, Linetec, and Linetec,Riggs Distler, and in Canada, primarily as NPL Canada.
27

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONMarch 31, 2021

Utility infrastructure services activity can be impacted by changes in infrastructure replacement programs of utilities, weather, and local and federal regulation (including tax rates and incentives). Utilities continue to implement or modify system integrity management programs to enhance safety pursuant to federal and state mandates. These programs have resulted in multi-year utility system replacement projects throughout the U.S. Generally, Centuri revenues are lowest during the first quarter of the year due to less favorable winter weather conditions. Revenues typically improve as more favorable weather conditions occur during the summer and fall months. In cases of severe weather, such as following a regional storm, Centuri may be engaged to perform restoration activities related to above-ground utility infrastructure.infrastructure, and related results impacts are not solely within the control of management. In addition, in certain circumstances, such as with large bid contracts (especially those of a longer duration), or unit-price contracts with revenue caps, results may be impacted by differences between costs incurred and those anticipated when the work was originally bid. Work awarded, or failing to be awarded, by individual large customers can significantly impact operating results.
COVID-19 PandemicMountainWest is an interstate natural gas transmission pipeline company that provides transportation and underground storage services to customers in Utah, Wyoming, and Colorado. A substantial portion of its revenue results from reservation charges, but variable rates are also included as part of its primarily rate-regulated rate structures.
While the novel coronavirus (“COVID-19”) pandemic has been ongoing since the first quarter of 2020, management has remained focused on the impacts to local and U.S. economies, including the breadth of vaccine deployment and level of commerce re-opening. Our utility operations, as essential services, have been ongoing during this time and Southwest has continued to provide services to meet the demand of its customers. Consistent with federal and state guidelines and protocols, Southwest has continued to operate across its territories. Similarly, Centuri has continued nearly all operations from the outset of the pandemic in the U.S., and demand has not significantly diminished. For the duration of the pandemic, the ability to work may nonetheless be impacted by individuals contracting or being exposed to COVID-19, governmental requirements to postpone the full resumption of certain non-essential services in some of the Company’s jurisdictions, or by management imposed restrictions for safety precautions; to date, these factors have not had a significant impact on the Company’s ability to maintain operations. Employees at many offices (including corporate headquarters) continue to work from home on a temporary basis and travel restrictions largely continue. Both segments continueCompany continues to facilitate administration, communication, and all critical functions, supported by deployed technology.functions. To date, there has not been a significant disruption in the Company’s supply chains, transportation network, or ability to serve customers.
As noted earlier, management continues to have in place a moratorium on natural gas disconnections for non-payment and continues to work with customers experiencing financial hardship through flexible payment arrangements. Management also continues to coordinate with certain governmental and nonprofit entities for customer payment assistance. Management has increased the allowance for uncollectibles; however, neither this nor other measures associated with the moratorium have had a material impact on our financial position overall. See Accounts receivable, net of allowances in Note 1 – Background, Organization, and Summary of Significant Accounting Policies. In the utility infrastructure services segment, a limited number of Centuri customers at the outset of the pandemic delayed some projects, and crews were temporarily reduced; however, most work continued, while following appropriate government protocols. Some crew reductions are ongoing in specific areas; however, the associated revenue impacts have not been significant. Management continues to monitor these circumstances, the future impacts of which are not currently known, such as the impact from business curtailments, weak market conditions, or any restrictions that may limit the fulfillment by Centuri of its contractual obligations.
The extent to which COVID-19 may adversely impact the Company’s business depends on future developments, including the timing of full resumption of commerce across our service territories, the deployment of vaccines and population immunity, the state of local and North American economies, and impacts of these collective conditions on our customers, in addition to other unmitigated effects related to the virus. Managementdevelopments; however, management does not currently expect the impact of these conditionsimpacts to be material to the Company’s liquidity or financial position; however, continued uncertainty of economic and operational impacts means management cannot predict whether the related financial impact in future periods will be different from impacts reflected for the three and twelve months ended March 31, 2021. In anticipation of a redeployment of employees to their normal work locations, management created a multi-phase reintegration plan to safeguard the well-being of our teams. Management will continue to monitor developments by government officials, and those affecting employees, customers, and operations, and will take additional steps as necessary to address impacts from the pandemic. Events and circumstances arising after March 31, 2021, including those resulting from COVID-19, will be reflected in management’s estimates for future periods.position overall.
This Management’s Discussion and Analysis (“MD&A”) of Financial Condition and Results of Operations should be read in conjunction with the unaudited condensed consolidated financial statements and notes thereto included in this Quarterly Report on Form 10-Q and the audited financial statements and notes thereto, as well as MD&A, included in the 20202021 Annual Report to Stockholders, which is incorporated by reference into the 20202021 Form 10-K.

2834

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  March 31, 20212022


Executive Summary
The items discussed in this Executive Summary are intended to provide an overview of the results of the Company’s and Southwest’s operations. As needed, certain itemsoperations and are covered in greater detail in later sections of MD&A. As reflected in the table below, the natural gas operations segment accounted for an average of 72% of twelve-month-to-date consolidated net income over the past two years. Natural gas sales are seasonal, peaking during the winter months; therefore, results of operations for interim periods are not necessarily indicative of results for a full year.
Summary Operating Results
Period Ended March 31, Period Ended March 31,
Three MonthsTwelve Months Three MonthsTwelve Months
(In thousands, except per share amounts)(In thousands, except per share amounts)2021202020212020(In thousands, except per share amounts)2022202120222021
Contribution to net incomeContribution to net incomeContribution to net income
Natural gas operations$118,715 $83,599 $194,234 $143,381 
Natural gas distributionNatural gas distribution$111,795 $118,715 $180,215 $194,234 
Utility infrastructure servicesUtility infrastructure services(859)(10,204)84,207 50,231 Utility infrastructure services(23,486)(859)17,793 84,207 
Pipeline and storagePipeline and storage16,930 — 16,930 — 
Corporate and administrativeCorporate and administrative(563)(853)(1,366)(1,943)Corporate and administrative(9,061)(563)(35,274)(1,366)
Net incomeNet income$117,293 $72,542 $277,075 $191,669 Net income$96,178 $117,293 $179,664 $277,075 
Weighted average common sharesWeighted average common shares57,600 55,310 56,564 54,726 Weighted average common shares60,737 57,600 59,919 56,564 
Basic earnings per shareBasic earnings per shareBasic earnings per share
ConsolidatedConsolidated$2.04 $1.31 $4.90 $3.50 Consolidated$1.58 $2.04 $3.00 $4.90 
Natural Gas Operations
Reconciliation of Revenue to Operating Margin (Non-GAAP measure)
Gas operating revenues$521,932 $502,827 $1,369,690 $1,351,089 
Less: Net cost of gas sold156,021 160,821 338,037 353,381 
Natural Gas DistributionNatural Gas Distribution
Reconciliation of Gross Margin to Operating Margin (Non-GAAP measure)Reconciliation of Gross Margin to Operating Margin (Non-GAAP measure)
Utility Gross MarginUtility Gross Margin$233,882 $233,156 $571,051 $546,171 
Plus:Plus:
Operations and maintenance (excluding Admin. & General) expenseOperations and maintenance (excluding Admin. & General) expense73,422 64,057 276,525 246,214 
Depreciation and amortization expenseDepreciation and amortization expense72,114 68,698 256,814 239,268 
Operating marginOperating margin$365,911 $342,006 $1,031,653 $997,708 Operating margin$379,418 $365,911 $1,104,390 $1,031,653 

1st Quarter 20212022 Overview
Natural gas operationsSouthwest Gas Holdings highlights include the following:

Announced the Board’s evaluation of strategic alternatives, including a potential sale of the Company, sale of business segments, and/or spin-off of Centuri
37,000 firstIssued 6,325,000 shares of common stock, raising $452 million in net proceeds
-timeCorporate and administrative expenses include impact of interest on $1.6 billion term loan and activism costs
Natural gas distribution highlights include the following:
38,000 first-time meters sets (1.8% growth rate)sets occurred over the past 12 months
Operating margin increased $24$14 million
Company-Owned Life Insurance (“COLI”) income was $2.7Issued $600 million in the current quarter versus a loss of $15.5 million in the prior-year quarter4.05% 10-year Notes
Issued $250 million term loan due March 2022 to fund incremental gas costs
CaliforniaNevada general rate case finalized

with rate relief effective April 2022
Utility infrastructure services highlights include the following:
Utility infrastructure servicesRecord revenues increased $30of $524 million in the first quarter of 2022, an increase of $160 million, or 9.1%44%, compared to the first quarter of 2021
Supported customersResults impacted by inflationary pressures and incremental interest and amortization associated with restoration services following winter freeze event ($9 million of incremental revenue)Riggs Distler
Utility infrastructure services expenses increased $16 million, or 5.1%
Realized $1.5 million in gains on sale of equipment

Southwest Gas HoldingsPipeline and storage highlights include the following:
Increased the quarterly dividend from $0.570 to $0.595 per share effective with the June 2021 paymentRecognized revenue of $67 million
ReceivedContributed $17 million to consolidated net proceedsincome, which is net of $46 $8.7 million through equity shelf program issuances


of one-time stand-up and integration costs
2935

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  March 31, 20212022

Results of Natural Gas OperationsDistribution
Quarterly Analysis
Three Months Ended
March 31,
Three Months Ended
March 31,
(Thousands of dollars)(Thousands of dollars)20212020(Thousands of dollars)20222021
Gas operating revenues$521,932 $502,827 
Regulated operations revenuesRegulated operations revenues$676,539 $521,932 
Net cost of gas soldNet cost of gas sold156,021 160,821 Net cost of gas sold297,121 156,021 
Operating marginOperating margin365,911 342,006 Operating margin379,418 365,911 
Operations and maintenance expenseOperations and maintenance expense106,135 103,088 Operations and maintenance expense119,636 106,135 
Depreciation and amortizationDepreciation and amortization68,698 64,725 Depreciation and amortization72,114 68,698 
Taxes other than income taxesTaxes other than income taxes20,687 16,378 Taxes other than income taxes21,652 20,687 
Operating incomeOperating income170,391 157,815 Operating income166,016 170,391 
Other income (deductions)Other income (deductions)550 (20,536)Other income (deductions)1,315 550 
Net interest deductionsNet interest deductions22,166 25,058 Net interest deductions26,610 22,166 
Income before income taxesIncome before income taxes148,775 112,221 Income before income taxes140,721 148,775 
Income tax expenseIncome tax expense30,060 28,622 Income tax expense28,926 30,060 
Contribution to consolidated net incomeContribution to consolidated net income$118,715 $83,599 Contribution to consolidated net income$111,795 $118,715 
ImprovementsContribution from natural gas operations to consolidated net incodistribution operatiome of $35ns decreased $6.9 million occurred between the first quarters of 20212022 and 2020.2021. The improvementdecline was primarily due to increasesan increase in Operations and maintenance expense, higher Depreciation and amortization, and an increase in Net interest deductions, partially offset by an increase in Operating Margin and Other income.margin.
Operating margin increased $24 million.$14 million quarter over quarter. Approximately $6$7 million of incremental margin was attributable to customer growth from 37,000including 38,000 first-time meter sets during the last twelve months, while ratemonths. Rate relief in California added $18$1 million of margin. Offsetting these increasesAlso contributing to the increase were impacts from the temporary moratorium oncustomer late fees initiated by Southwestthat were $2.8 million greater in the current quarter due to the lifting of the moratorium in 2021 on such fees in Arizona, Nevada, and California. The moratorium was previously in place beginning in March 2020 ($2.6 million), in addition to lower connection/re-connection charges, as a result ofprovide temporary relief to customers during the COVID-19 pandemic. Amounts collected from and returned to and collected from customers associated with regulatory account balances as well asand programs, including $6.2 million in incremental (previously unrecovered) revenue associated with Vintage Steel Pipe (“VSP”) and Customer-Owned Yard Line (“COYL”) programs in Arizona, also contributed to the improvement. Refer to Rates and Regulatory Proceedings below. Other differences in miscellaneous revenue and margin from customers outside the decoupling mechanisms also impactedcontributed to the remaining net variance between periods.quarters.
Operations and maintenance expenseexpense increased $3$13.5 million or 3%, between quarters primarily duebetween quarters. In addition to an increasegeneral inflationary impacts, other increases occurred in the service-related component of employee pension costs (see $775,000 increase reflected in service cost for the three plans in Note 2 - Components of Net Periodic Benefit Cost) and other benefits, increased expenditures for pipeline damage prevention programs,$3.5 million specifically related to customer service, system support, and billing. Other increases included employee and benefit-related costs ($1.2 million) and increased legal claim-related costs, offset by lowergeneral business insurance ($800,000). The prior year period expense levels included more modest expense levels overall due to COVID-environment reduced training, travel and travel costs as a result of the current COVID-19 environment.related amounts.
Depreciation and amortization expenseexpense increased $4$3.4 million, or 6%5%, betweenbetween quarters, primarily due to a $546$564 million, or 7%, increase in average gas plant in service compared to the corresponding quarter a year ago. Amortization ofOffsetting the increase, amortization related to regulatory program balances impacted expenseaccount recoveries decreased approximately $700,000 between quarters, which is also reflected in both periods. TheOperating margin above. The increase in gas plant was attributable to pipeline capacity reinforcement work,work, franchise requirements, scheduled pipe replacement activities, and new infrastructure.
Taxes other than income taxesOther income increased $4.3 million between quarters primarily due to an increase in Arizona property taxes.
Other incom$765,000e improved $21.1 million between quarters primarily due to an increase in income from COLI policies.. The current quarter reflects a $2.7$2 million increasedecline in COLI policy cash surrender values, while the prior-year quarter reflected a $15.5$2.7 million decline in COLI policy cash surrender values. increase. These fluctuations primarily result from changes in the valuesportion of equity securities associated with the cash surrender values; changes in both quarters werevalues that are associated with equity securities, and are directionally consistent with the broader securities markets. Additionally, theThis decrease was offset by non-service-related components of employee pension and other postretirement benefit costs, which decreased $3.3 million between quarters. Interest income increased $2.1 million between quarters due to the increased receivable position of the Purchased Gas Adjustment. A gain of $1.5 million between periods.was recognized on the sale of non-regulated property in the first quarter of 2022.
Net interest deductions decreased $2.9increased $4.4 million in thein the first quarter of 2021,2022, as compared to the prior-year quarter, primarily duerelated to lower interest in the prior-year quarter, as a carrying costs on PGA balances and amortization ofamount related to an interest-related regulatory balance in Arizona, as well as lower interest rates associated with variable-rate debt.
Income tax expense in both periods reflects that COLI results are recognized without tax consequences, and also reflects the amortization ofannual excess accumulated deferred income tax (“EADIT”) balances.
30

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONMarch 31, 2021

Results of Natural Gas Operations
Twelve-Month Analysis
Twelve Months Ended March 31,
(Thousands of dollars)20212020
Gas operating revenues$1,369,690 $1,351,089 
Net cost of gas sold338,037 353,381 
Operating margin1,031,653 997,708 
Operations and maintenance expense409,429 419,720 
Depreciation and amortization239,268 222,733 
Taxes other than income taxes67,769 62,500 
Operating income315,187 292,755 
Other income (deductions)14,496 (16,965)
Net interest deductions98,256 96,985 
Income before income taxes231,427 178,805 
Income tax expense37,193 35,424 
Contribution to consolidated net income$194,234 $143,381 
Contribution to consolidated net income from natural gas operations increased $51 million between the twelve-month periods ended March 2021 and 2020. The increase was primarily due to an increase in Operating margin and Other income.
Operating margin increased $34 million between periods. Customer growth provided $15 million, and combined rate relief provided $24 million of incremental operating margin. The pandemic-period moratorium on late fees ($7.3 million) and lower connection/re-connection charges offset the improvements. Regulatory account balance return and recoveries impacted both periods, in addition to margin from customers outside the decoupling mechanisms.
Operations and maintenance expense decreased $10.3 million, or 2%, between periods primarily due to lower travel and in-person training costs in the current COVID-19 environment and due to other cost saving initiatives by management. These were partially offset by incremental expenditures for pipeline damage prevention programs associated with a growing infrastructure and customer base, and by increases in information technology costs.
Depreciation and amortization expense increased $16.5 million, or 7%, between periods primarily due to a $634 million, or 8%, increase in average gas plant in service since the corresponding period in the prior year, offset by a modest decrease in regulatory amortization.
Taxes other than income taxes increased $5.3 million between periods primarily due to an increase in property taxes in Arizona, and to a lesser extent, in Southwest’s California and Nevada jurisdictions.
Other income increased $31.5 million between the twelve-month periods of 2021 and 2020, primarily due to a current-period $27.4 million increase in COLI policy cash surrender values and recognized death benefits, while the twelve months ended March 31, 2020 reflected a $5.7 million decline. Offsetting these amounts were lower interest earned on regulatory balances and an increase in non-service related components of post-retirement benefit cost.
Net interest deductions increased $1.3 million between periods primarily due to interest associated with the issuance of $450 million of Senior Notes in June 2020, offset by amortization of an interest-related regulatory balance in Arizona and a reduction in interest rates on variable-rate debt.
Income tax expense in both periods reflects that COLI results are recognized without tax consequences, and also reflects the amortization of EADIT balances.
31

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONMarch 31, 2021

Results of Utility Infrastructure Services
Quarterly Analysis
Three Months Ended
March 31,
(Thousands of dollars)20212020
Utility infrastructure services revenues$363,975 $333,493 
Operating expenses:
Utility infrastructure services expenses335,614 319,314 
Depreciation and amortization24,744 22,928 
Operating income (loss)3,617 (8,749)
Other income (deductions)(102)(242)
Net interest deductions1,622 2,899 
Income (loss) before income taxes1,893 (11,890)
Income tax expense (benefit)1,200 (2,149)
Net income (loss)693 (9,741)
Net income attributable to noncontrolling interest1,552 463 
Contribution to consolidated net income attributable to Centuri$(859)$(10,204)
Utility infrastructure services revenues increased $30.5 million in the first quarter of 2021 when compared to the prior-year quarter, primarily due to incremental electric infrastructure revenues of $21.6 million from expansion of work with existing customers and securing work with new customers. Included in the incremental electric infrastructure revenues during the first quarter of 2021 was $9 million from emergency restoration services performed by Linetec following tornados and ice storms primarily in Texas. The remaining increase in revenue was attributable to favorable weather in several areas and customer scheduling, which allowed bid projects to be completed during an otherwise seasonally slow period.
Utility infrastructure services expenses increased $16.3 million in the first quarter of 2021 when compared to the prior-year quarter, primarily due to costs to complete additional electric and gas infrastructure work. Operating efficiencies improved due to favorable weather conditions and reduced COVID-19 restrictions from the prior year. Additionally, changes in mix of work resulted in lower subcontractor expenses as a percentage of revenues, which contributed to increased operating income. Storm restoration work typically generates a higher profit margin than core infrastructure services, due to improved operating efficiencies related to equipment utilization and absorption of fixed costs. Included in total Utility infrastructure services expenses were general and administrative costs, which increased $3.3 million in 2021 compared to 2020, associated primarily with growth of the business. Gains on sale of equipment in the first quarter of 2021 (reflected as an offset to Utility infrastructure services expenses) were $1.5 million.
Depreciation and amortization expense increased $1.8 million between quarters, attributable to equipment purchased to support the growing business, primarily at Linetec. Depreciation expense, relative to the revenues recorded, was generally consistent between periods.
Net interest deductions decreased $1.3 million between quarters primarily due to lower incremental borrowing rates associated with decreased outstanding borrowings under Centuri’s $590 million secured revolving credit and term loan facility.








32

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONMarch 31, 2021

Results of Utility Infrastructure Services
Twelve-Month Analysis
Twelve Months Ended March 31,
(Thousands of dollars)20212020
Utility infrastructure services revenues$1,978,770 $1,771,609 
Operating expenses:
Utility infrastructure services expenses1,745,729 1,592,076 
Depreciation and amortization98,548 90,618 
Operating income134,493 88,915 
Other income (deductions)(67)(651)
Net interest deductions7,99213,716 
Income before income taxes126,434 74,548 
Income tax expense34,47721,718 
Net income91,957 52,830 
Net income attributable to noncontrolling interest7,7502,599 
Contribution to consolidated net income attributable to Centuri$84,207 $50,231 
Utility infrastructure services revenues increased $207.2 million, or 12%, in the current twelve-month period compared to the corresponding period of 2020, primarily due to incremental electric infrastructure revenues of $165.7 million from expansion of work with existing customers and securing work with new customers. Included in the incremental electric infrastructure revenues during the twelve-month period of 2021 was $90.5 million from emergency restoration services performed by Linetec, following hurricane, tornado, and other storm damage to customers’ above-ground utility infrastructure in and around the Gulf Coast and eastern regions of the U.S., as compared to $13.2 million in similar services during the twelve-month period in 2020. Centuri’s revenues derived from storm-related services vary from period to period due to the unpredictable nature of weather-related events. The remaining increase in revenue was attributable to continued growth with existing gas infrastructure customers under master service and bid agreements.
Utility infrastructure services expenses increased $153.7 million between periods, largely due to incremental expenses related to electric infrastructure work of $91.4 million, including costs associated with storm restoration work, as well as costs to complete additional gas and electric infrastructure work. These costs were mitigated by increased productivity and efficiencies in completing electrical infrastructure projects and by lower fuel costs as a percentage of revenues. Included in Utility infrastructure services expenses were general and administrative costs, which increased $26.1 million in the twelve-month period ended March 2021 when compared to the corresponding period ended March 2020, due to higher payroll and operating costs associated with continued growth of the business and higher profit-based incentive compensation costs. Offsetting these increases were lower insurance costs from favorable claims experience under Centuri’s self-insurance programs. Gains on sale of equipment (reflected as an offset to Utility infrastructure services expenses) were $3.3 million and $5.3 million for the twelve-month periods of 2021 and 2020, respectively.
Depreciation and amortization expense increased $7.9 million between the current and prior-year period. The increase was primarily attributable to incremental costs of $6.3 million to support the electric infrastructure work being performed, and to additional property and equipment purchased to support the growing business overall.
Net interest deductions decreased $5.7 million between periods primarily due to lower incremental borrowing rates associated with decreased outstanding borrowings under Centuri’s $590 million secured revolving credit and term loan facility.
The income tax expense increase between periods reflects the increased level of pre-tax earnings.

3336

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  March 31, 20212022

(“EADIT”) balance in Arizona was required to be returned to customers, thereby reducing interest when the carrying charge regulatory liability balance was amortized for the return ($1.5 million), and due to higher interest in the current period due to $300 million of Senior Notes issued in August 2021, and to a lesser extent, $600 million of Senior Notes issued in March 2022.
Results of Natural Gas Distribution
Twelve-Month Analysis
Twelve Months Ended March 31,
(Thousands of dollars)20222021
Regulated operations revenues$1,676,397 $1,369,690 
Net cost of gas sold572,007 338,037 
Operating margin1,104,390 1,031,653 
Operations and maintenance expense452,051 409,429 
Depreciation and amortization256,814 239,268 
Taxes other than income taxes81,308 67,769 
Operating income314,217 315,187 
Other income (deductions)(3,794)14,496 
Net interest deductions102,004 98,256 
Income before income taxes208,419 231,427 
Income tax expense28,204 37,193 
Contribution to consolidated net income$180,215 $194,234 
Contribution to consolidated net income from natural gas distribution operations decreased $14 million between the twelve-month periods ended March 2022 and 2021. The decline was due primarily to increases in Operations and maintenance expense, Depreciation and amortization, and Taxes other than income taxes, and a decrease in Other income (deductions), offset by an increase in Operating margin.
Operating margin increased $73 million between periods. Customer growth provided $14 million, and combined rate relief provided $44 million of incremental operating margin. Also contributing to the increase were customer late fees that were $8 million greater in the current period due to lifting the moratorium on such fees in all jurisdictions, which was initially instituted in March 2020 to provide temporary relief to customers during the pandemic. Additionally, regulatory account balance returns and recoveries increased approximately $2.1 million between periods. Incremental (previously unrecovered) VSP and COYL revenue in Arizona ($5.2 million combined, between twelve-month periods) also contributed to the variance between periods.
Operations and maintenance expense increased $43 million, or 10%, between periods. In addition to general inflationary impacts, Southwest also experienced $7 million of higher legal-claim related costs (including a $5 million legal reserve as described in Note 1 – Background, Organization, and Summary of Significant Accounting Policies), higher levels of service-related pension costs ($6.1 million), customer service, system support, and billing costs ($7.9 million), increased expenditures for pipeline damage prevention programs ($4 million) and general business insurance ($2.7 million), as well as increased medical and other employee benefit costs. Prior year expense levels were uncharacteristically low due to COVID-period reduced training/travel and other cost savings.
Depreciation and amortization expense increased $17.5 million, or 7%, between periods primarily due to a $562 million, or 7%, increase in average gas plant in service since the corresponding period in the prior year. The increase in gas plant was attributable to pipeline capacity reinforcement work, franchise requirements, scheduled pipe replacement activities, and new infrastructure, as well as the implementation of a new customer information system placed into production in the second quarter of 2021. Amortization of regulatory account balances impacted expense in both periods, which is offset in Operating margin above.
Taxes other than income taxes increased $13.5 million between periods primarily due to an increase in property taxes in Arizona, and to a lesser extent, in California and Nevada jurisdictions.
Other income decreased $18.3 million between the twelve-month periods of 2022 and 2021, primarily due to current-period income of $4.1 million related to COLI policy cash surrender values and net death benefits recognized, compared to the twelve months ended March 31, 2021 which reflected an exceptionally large increase in values of $27.4 million (including $3.7 million of net death benefits). Additionally, equity AFUDC was lower by $5.6 million, due to the impact short-term borrowings have
37

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONMarch 31, 2022

on AFUDC rates. Offsetting these impacts were non-service cost components of employee pension and other postretirement benefit costs which were $7.8 million lower between periods, and interest income which increased $3.9 million between periods. A gain on sale of non-regulated property in the most recent twelve-month period also impacted the variance between periods.
Net interest deductions increased $3.7 million between periods primarily due to increased interest associated with $300 million of Senior Notes issued in August 2021, and to a lesser extent, $600 million of Senior Notes issued in March 2022.
Income tax expense decreased $9 million between the twelve-month period ended March 31, 2022 and 2021, primarily due to a reduction in pre-tax book income, additional amortization of EADIT ($5 million), and to a lesser extent, changes in Arizona and California state apportionment percentages of $2.8 million. Income tax expense in both periods reflects that COLI results are recognized without tax consequences.
Results of Utility Infrastructure Services
Quarterly Analysis
Three Months Ended
March 31,
(Thousands of dollars)20222021
Utility infrastructure services revenues$523,877 $363,975 
Operating expenses:
Utility infrastructure services expenses503,232 335,614 
Depreciation and amortization37,612 24,744 
Operating income (loss)(16,967)3,617 
Other income (deductions)(486)(102)
Net interest deductions11,131 1,622 
Income (loss) before income taxes(28,584)1,893 
Income tax expense (benefit)(6,170)1,200 
Net income (loss)(22,414)693 
Net income attributable to noncontrolling interests1,072 1,552 
Contribution to consolidated results attributable to Centuri$(23,486)$(859)
Utility infrastructure services revenues increased $159.9 million, or 44%, in the first quarter of 2022 when compared to the prior-year quarter, including $113.8 million from Riggs Distler. Revenues from electric infrastructure services increased $88 million in the first quarter of 2022 when compared to the prior-year quarter, of which $67.5 million was recorded by Riggs Distler. Included in electric infrastructure services revenues overall was $14 million from emergency restoration services performed by Linetec and Riggs Distler following tornado and other storm damage to customers’ above-ground utility infrastructure in and around the Gulf Coast and eastern regions of the U.S., compared to $9 million in the prior-year quarter. Centuri’s revenues derived from storm-related services vary from period to period due to the unpredictable nature of weather-related events, and when this type of work is performed, it typically generates a higher profit margin than core infrastructure services, due to improved operating efficiencies related to equipment utilization and absorption of fixed costs. The current quarter increase also included approximately $38.8 million in gas infrastructure services revenues, including $13.6 million recorded by Riggs Distler, primarily from increased volumes under master service agreements.
Utility infrastructure services expenses increased $167.6 million in the first quarter of 2022 when compared to the prior-year quarter. The overall increase includes $104.1 million incurred by Riggs Distler, and incremental costs related to the higher volume of infrastructure services provided. Changes in mix of work and inflationary pressures led to higher input costs including fuel and subcontractor expenses, while higher rental and tooling costs were incurred in support of growth in our electric infrastructure business. The incremental impact of fuel costs in the current environment is estimated at $5 million. These impacts are in contrast to the first quarter of 2021, when favorable weather and mix of work provided improved efficiencies and relative favorable results were uncustomary compared to first quarters that typically bring higher losses, given the seasonal nature of the business and winter-weather hampering effects on construction efforts. Also included in total Utility infrastructure services expenses were general and administrative costs, which increased approximately $7.1 million between quarters, including $4 million of general and administrative costs incurred by Riggs Distler. Other administrative costs increased due to the continued growth in the business. Gains on sale of equipment in the first quarter of 2022 and 2021 (reflected as an offset to Utility infrastructure services expenses) were approximately $413,000 and $1.5 million, respectively.
38

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONMarch 31, 2022

Depreciation and amortization expense increased $12.9 million between quarters, of which $12.3 million was recorded by Riggs Distler. The remaining increase was attributable to equipment and computer systems purchased to support the growing volume of infrastructure work.
The increase in Net interest deductions of $9.5 million was primarily due to incremental interest related to outstanding borrowings under Centuri’s $1.545 billion amended and restated secured revolving credit and term loan facility in conjunction with the acquisition of Riggs Distler.
Results of Utility Infrastructure Services
Twelve-Month Analysis
Twelve Months Ended March 31,
(Thousands of dollars)20222021
Utility infrastructure services revenues$2,318,563 $1,978,770 
Operating expenses:
Utility infrastructure services expenses2,123,085 1,745,729 
Depreciation and amortization130,511 98,548 
Operating income64,967 134,493 
Other income (deductions)683 (67)
Net interest deductions30,5087,992 
Income before income taxes35,142 126,434 
Income tax expense11,40634,477 
Net income23,736 91,957 
Net income attributable to noncontrolling interests5,9437,750 
Contribution to consolidated net income attributable to Centuri$17,793 $84,207 
Utility infrastructure services revenues increased $339.8 million, or 17%, in the current twelve-month period compared to the corresponding period of 2021, including $277.7 million recorded by Riggs Distler subsequent to its acquisition on August 27, 2021. Revenues from electric infrastructure services increased $179.7 million in 2022 when compared to the prior year, of which $175.5 million was recorded by Riggs Distler. Included in the incremental electric infrastructure revenues during the twelve-month period of 2022 was $70.5 million from emergency restoration services performed by Linetec and Riggs Distler, following hurricane, tornado, and other storm damage to customers’ above-ground utility infrastructure in and around the Gulf Coast and eastern regions of the U.S., as compared to $90.5 million in similar services during the twelve-month period in 2021. The remaining increase in revenue was attributable to continued growth with existing gas infrastructure customers under master service and bid agreements, partially offset by reduced work with two significant customers during the 2022 twelve-month period (totaling $60.6 million), due to the mix of projects under each customer’s multi-year capital spending programs.
Utility infrastructure services expenses increased $377.4 million, or 22%, between periods (including $14 million of professional fees related to the acquisition of Riggs Distler). The increase overall includes $249 million incurred by Riggs Distler subsequent to the acquisition, as well as incremental costs related to electric infrastructure services work and costs necessary for the completion of additional gas infrastructure work. Higher fuel costs, equipment rental expense, and subcontractor expenses were also incurred in support of growth in our electric infrastructure business. Expenses in relation to revenues, and therefore, profit margins, can be impacted by the mix of work and inefficiencies from equipment and facility utilization and under-absorption of other fixed costs, which occurred due to the reduced work from the two large customers and lower revenues from emergency restoration services as noted above. Also included in total Utility infrastructure services expenses were general and administrative costs, which increased approximately $26.5 million between comparative periods, including the noted $14 million of acquisition-related professional fees and an additional $13.3 million of general and administrative costs incurred by Riggs Distler subsequent to the acquisition. Other administrative costs increased due to the growth in the business. Gains on sale of equipment (reflected as an offset to Utility infrastructure services expenses) were approximately $5.8 million and $3.3 million for the twelve-month periods of 2022 and 2021, respectively.
Depreciation and amortization expense increased $32 million between the current and prior-year twelve-month periods, of which $29.1 million was recorded by Riggs Distler subsequent to the acquisition. The remaining increase was attributable to equipment and computer systems purchased to support the growing volume of infrastructure work.
39

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONMarch 31, 2022

Net interest deductions increased $22.5 millionbetween periods due to incremental interest related to outstanding borrowings under Centuri’s $1.545 billion amended and restated secured revolving credit and term loan facility in conjunction with the acquisition of Riggs Distler.
Results of Pipeline and Storage
Quarterly Analysis
The first quarter of 2022 was the first reporting period of post-acquisition operating results for the pipeline and storage segment.
Three Months Ended
March 31,
(Thousands of dollars)2022
Regulated operations revenues$66,993 
Operating expenses:
Net cost of gas sold1,797 
Operations and maintenance expense24,312 
Depreciation and amortization12,920 
Taxes other than income taxes3,164 
Operating income24,800 
Other income (deductions)543 
Net interest deductions4,382 
Income before income taxes20,961 
Income tax expense4,031 
Contribution to consolidated results attributable to MountainWest$16,930 
Current period operating results include rate-regulated transmission and subscription storage revenues of $61.1 million. Operating expenses include $8.7 million of costs associated with integrating MountainWest, including employee retention payments. Additional integration costs will be incurred in future periods until integration efforts are completed.
Rates and Regulatory Proceedings
Southwest is subject to the regulation of the Arizona Corporation Commission (the “ACC”), the Public Utilities Commission of Nevada (the “PUCN”), the California Public Utilities Commission (the “CPUC”), and the Federal Energy Regulatory Commission (the “FERC”). Due to the size of Southwest’s regulated operations and the frequency of rate cases and other procedural activities with its commissions, the following discussion focuses primarily on the proceedings within its natural gas distribution operations.
General Rate Relief and Rate Design
Rates charged to customers vary according to customer class and rate jurisdiction and are set by the individual state and federal regulatory commissions that govern Southwest’s service territories. Southwest makes periodic filings for rate adjustments as the cost of providing service changes (including the cost of natural gas purchased) changes,, and as additional investments in new or replacement pipeline and related facilities are made. Rates are intended to provide for recovery of all commission-approved costs and a reasonable return on investment. The mix of fixed and variable components in rates assigned to various customer classes (rate design) can significantly impact the operating margin actually realized by Southwest. Management has worked with its regulatory commissions in designing rate structures that strive to provide affordable and reliable service to its customers while mitigating volatility in prices to customers and stabilizing returns to investors. Such rate structures were in place in all of Southwest’s operating areas during all periods for which results of natural gas distribution operations are disclosed above.
Arizona Jurisdiction
Arizona General Rate Case. In May 2019,December 2021, Southwest filed a general rate case application requestingproposing a revenue increase of approximately $90.7 million. Although updated rates related to increase revenue by approximately $57 million to update the cost of service to reflect recent U.S. tax reform changes, incorporating the return of excess deferred income taxes to customers, and to reflect capital investments, including certain post-test year additions and the southern Arizona liquefied natural gas (“LNG”) facility. The application included a proposed 10.3% return on equity (“ROE”) relative to a capital structure of 51.1% equity. Southwest updated its request to reflect the actual amortization of excess accumulated deferred income taxes (“EADIT”) resulting from U.S. tax reform, and to include additional post-test year plant associated with its customer-owned yard line (“COYL”) and vintage steel pipe (“VSP”) programs, discussed further below. The amendment increased the deficiency by $36 million, to $93 million, which was further updated to $90.6 million based on certain aspects of cost of service, including a revised proposed ROE of 10.15%. The request and amendments included the retention of a fully decoupledprevious rate design, other previously approved regulatory mechanisms, and a new infrastructure tracking mechanism for specific plastic pipe, in addition to a proposal for a renewable natural gas (“RNG”) program as part of its PGA mechanism. Southwest entered into a stipulation for certain aspects of the case agreeing to continue the COYL program; to establish a Tax Expense Adjustor Mechanism to track annual changes in the amortization of EADIT, as well as any future changes in the federal tax rate; to include a 10-year amortization of EADIT associated with deemed “unprotected” plant; and to incorporate various tariff proposals. EADIT associated with “protected” plant relates to timing differences from using accelerated depreciation for tax purposes and another method for book purposes, and unprotected amounts relate to all other timing differences. Following the hearing and legal briefing process, this requested amount was further updated to $80.7 million to reflect agreements by the parties on the treatment of EADIT and certain other ratemaking adjustments.
A final decision was issued in December 2020, with new rates becomingbecame effective in January 2021, resultingthe most significant driver for the new request is the necessity to reflect in an overall annual revenue increase of $36.8 million, andrates the continuation of both full revenue decoupling andsubstantial capital investments that have been made since the COYL program. An ROE of 9.1% was approved with a capital structure comprised of 48.9% long-term debt and 51.1% common equity. The overall increase reflects the final ROE and the inclusion of a six-month period covering certain post-test year plant additions, as well as the post-test year plant additionend of the LNG facility. See additional discussiontest year in the previous case, including the customer information system implemented in May 2021. The current filing is based on a test year ended August 31, 2021 and proposes a return on common equity of 9.90% relative to a target equity ratio of 51%. Recovery (over three years) of the approximately $12 million related to these programs below. The continuation of the property tax tracker was supportedoutstanding deferral
40

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONMarch 31, 2022

balance associated with the LNG facility (see below) is included in the finalrequest, along with the approximately $2.5 million (also over three years) in late payment charges that were suppressed from customer accounts during the COVID-19 pandemic. A request to continue the Delivery Charge Adjustment (“DCA”), Southwest’s full-revenue decoupling mechanism, is also included, while no changes to Southwest’s existing rate design are proposed. A decision as wasis anticipated by the Tax Expense Adjustor Mechanism (noted above). Whileend of 2022, with new rates expected to be effective in the RNG proposal was not approved as partfirst quarter of the decision, the ACC agreed to conduct a workshop to further explore the role of RNG in Arizona.2023.
Delivery Charge Adjustment. The Delivery Charge Adjustment (“DCA”)DCA is filed each April, which along with other reporting requirements, contemplates a rate to recover the over- or under-collected margin tracker (decoupling mechanism) amounts based on the balance at the end of the preceding calendar year. reporting period. An April 2022 filing proposes a rate to return $10.5 million, the over-collected balance existing at the end of the first quarter 2022.
Tax Reform.In April 2020,the most recently concluded Arizona general rate proceeding, a Tax Expense Adjustor Mechanism (“TEAM”) was approved to timely recognize any future tax rate changes resulting from federal or state tax legislation. In addition, the TEAM tracks and returns/recovers the revenue requirement impact of changes in EADIT amortization compared to the amount authorized in the most recently concluded rate case. In December 2021, Southwest filed to adjustits inaugural TEAM rate application for the existing rate to consider the 14-month period of January 1, 2019 through February 29, 2020, proposing a rate of $0.00655 per therm based on an ending balancerecovery of approximately $3.5 million. Although Commission Staff concurred$4.3 million associated with Southwest’s proposed rate, the mechanism. The commission staff is expected to issue its report on the filing in the secondquarter of 2022 for ACC ultimately elected to reduce the rate to zero in an effort to provide some measure of customer relief in light of current issues related to the COVID-19 pandemic, andconsideration at the time of both the April filing and the ACC decision, the balance was a liability (in an over-recovered status). Activity through the remainder of 2020 resulted in a modest under-collected balance at December 31, 2020, and an over-collected balance of $9.5 million exists as of March 31, 2021.subsequent open meeting.
LNGLiquefied Natural Gas (“LNG”) Facility. In 2014, Southwest sought ACC preapproval to construct, operate, and maintain a 233,000 dekatherm LNG facility in southern Arizona. This facility is intended to enhance service reliability and flexibility related to natural gas deliveries in the southern Arizona area by providing a local storage option, and to be connectedconnecting directly to Southwest’s
34

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONMarch 31, 2021

distribution system. Southwest was ultimately granted approval for construction and deferral of costs. The facility was placed in service in December 2019. The capital costs and the operating expenses associated with plant operation were consideredapproved and approvedconsidered as part of Southwest’s recently approvedprevious general rate case. Due to the timing of the approximateApproximately $12 million in operating costs, incurred following the in-service date a proposal to recoverof the associated regulatory asset balance will be included infacility and after the next Arizonaperiod considered as part of the previous general rate case, were deferred in the previously authorized regulatory asset account and are included for consideration in the current general rate case application.
COYL Program.Customer-Owned Yard Line (“COYL”) Program. Southwest originally received approval, in connection with its 2010 Arizona general rate case, to implement a program to conduct leak surveys, and if leaks were present, to replace and relocate service lines and meters for Arizona customers whose meters were set off from the customer’s home, representing a non-traditional configuration. A filing in May 2021 proposed the recovery of previously unrecovered surcharge revenue from 2019 and 2020 (collectively, $13.7 million) over a one-year period. In 2014,November 2021, the ACC approved a “Phase II” offull recovery within the COYL program,proposed timeline, the rate for which includedwas implemented the replacement of non-leaking COYLs. Annual surcharges were designed to collect the revenue requirement associated with the program.same month. In a February 20192022 filing, Southwest requested to increase its surcharge revenue by $3.4 million to recover a revenue requirement of $6.7 million (an increase of $3.2 million) associated with $26.6 million in capital projects completed in 2018. The ACC ultimately issued an Order in October 2019 authorizing Southwest to retain the existing annual surcharge in place, while it reviewed the program as part of the general rate case. Southwest also included an estimated $21.1 million related to the 2019 COYL capital projects as part of the rate case. Parties to the rate case stipulated to continue the COYL program and recommended recovery of the plant as part of Southwest’s filed post-test year plant adjustment, with inclusion of related amounts in base rates. Further consideration in the rate case decision limited post-test year plant to six months (inclusive of COYL plant), and limited future COYL activity to the replacement of leaking COYLs, or in cases when other replacement activity is taking place in the vicinity. A filing in the second quarter of 2021 will propose the recovery of the revenue requirement associated with the 2019previous investments made since August 2020 and 2020 COYL activity and plant placed in service following the six-month post-testthrough calendar year inclusion period2021, with a proposed rate implementation of the recently concluded rate case.June 2022.
VSPVintage Steel Pipe (“VSP”) Program. Southwest received approval, in connection with its 2016 Arizona general rate case, to implement a VSP replacement program, due to having a substantial amount of pre-1970s vintage steel pipe in Arizona. As part of the program, Southwest proposed to begin replacing the pipe on an accelerated basis and recover the costs through an annual surcharge filing. Once implemented, surcharges to collect the annual revenue requirement associated with the capital expenditures were designed to be revised annually under the program. In February 2019, Southwest requested to increase its surcharge revenue by $9.5 million (to $11.9 million) associated with the replacement of approximately $100 million in 2018 VSP capital projects. The ACC issued an Order in October 2019 authorizing Southwest to retain the existing annual surcharge, and indicated it would review the programHowever, as part of the generalSouthwest’s most recent rate case. Southwest also proposed to have the ACC review an estimated $103.4 million of 2019 VSP capital projects as part of the rate case. As noted above, thecase decision in the general rate case provided for a post-test year plant adjustment period of six months (inclusive of VSP). However,2020, the ACC ultimately decided to discontinue the accelerated VSP program at this time.program. A filing in the second quarter ofMay 2021 will proposeproposed the recovery of thepreviously unrecovered surcharge revenue requirement associated with therelating to investments during 2019 and 2020, VSP activity and plant placedwith approximately $60 million to be recovered over a three-year period. In November 2021, the ACC approved full recovery over the proposed three-year timeline, updated rates for which were implemented in service following the six month post-test year inclusion period of the recently concluded rate case.March 2022.
Customer Data Modernization Initiative.Graham County Utilities. In April 2021, Southwest embarked on an initiative to replace its customer service system and gas transaction systems, each to be utilized to support all Southwest service territories. Combined, these undertakings are referred to as the Customer Data Modernization Initiative (the “CDMI”Graham County Utilities, Inc. (“GCU”). In March 2019, Southwest filed ana joint application with the ACC seeking an accounting orderfor approval to tracktransfer assets of GCU to Southwest and defer all costsextend Southwest’s Certificate of Public Convenience and Necessity to serve the more than 5,000 associated customers, for a purchase price of $3.5 million. Approval of the application by the ACC was received in December 2021 with final transfer in mid-January 2022. Former GCU customers continue to be served under existing GCU rates until such time as they are rolled into Southwest’s rates, which is proposed to take place in conjunction with the CDMI to mitigate adverse financial implications associated with this multi-year initiative. The commission issued a decision in this matter in early April 2021 denying Southwest’s request for a regulatory asset, indicating thateffective date of rates resulting from the requested recovery mechanism was not warranted. Therefore, the costs will be considered as part of a futurecurrently pending Arizona general rate proceeding. The total cost for the CDMI was estimated at approximately $174 million, $96 million of which would be allocable to the Arizona rate jurisdiction. The customer service system was placed in service in May 2021 and the gas transaction system will follow later in 2021.case.
California Jurisdiction
California General Rate Case. In August 2019, Southwest filed a general rate case based on a 2021 test year, seeking authority to increase rates in its California rate jurisdictions, after being granted earlier permission to extend the rate case cycle by two years and continue its 2.75% previously approved Post-Test Year (“PTY”) attrition adjustments for 2019 and 2020. The proposed
Southwest reached an agreement in principle with the Public Advocate’s Office, which was unanimously approved by the CPUC on March 25, 2021, including a $6.4 million total combined revenue increase of $12.8 million was net ofwith a $10.9 million revenue reduction associated with changes from U.S. tax reform, which included the amortization of $9.8 million (approximately $2 million annually over five years) associated with the difference in authorized income tax expense and actual incurred income tax expense for years 2019 and 2020, which when returned would impact cash flows, but not expected to have an impact10% return on earnings. Southwest tracked those amounts, as directed, and reserved them for return to customers. The overall revenue request also included $1.6 million of EADIT proposed to be returned to customers each year until the amount is reset as part of a future rate case. Southwest’s proposal included an ROE of 10.5%,common equity, relative to a 53%52% equity ratio; continuationratio. Approximately $4 million of annual post-test year margin adjustments of 2.75%; implementation of various safety-related programs, includingthe original proposed increase was associated with a targeted pipe replacement program and a meterNorth Lake
3541

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  March 31, 20212022

protection program (with a combination of measures, such as snow sheds, excess flow valves, upgraded meter set piping and upgraded Encoder Receiver Transmitter protocol); as well as an expansion of the school COYL replacement program.
Southwest reached an agreement in principle with the Public Advocate’s Office for settlement of the general rate case, which was unanimously approved by the Commission on March 25, 2021, including a $6.4 million total combined revenue increase with a 10% ROE, relative to a 52% equity ratio. Approximately $4 million of the original proposed increase of $12.8 million was associated with a North Lake Tahoe project that would not ultimately be completed by the beginning of 2021; consequently, the parties agreed to remove it from the base rate increase and instead provide for recovery of the cost of service impacts of the project through a future surcharge. The rate case decision also maintains Southwest’s existing 2.75% annual attrition adjustments and the continuation of the pension balancing account, and a proposed increase in the residential basic service charge from the existing $5.00 to $5.75 per month.account. It also includes a cumulative total ofexpenditures totaling $119 million over the five-year rate cycle to implement risk-informed proposals, consisting of thea school COYL replacement, meter protection, and pipe replacement programs. Although new rates were originally anticipated to be in place by January 1, 2021, in light of an administrative delay, Southwest was granted authority to establish a general rate case memorandum account to track the margin/revenue impacts related to the delay in the implementation of new rates. Suchrates for purposes of later recovery. New rates were ultimately implemented April 1, 2021.
Attrition Filing. Since Southwest’sFollowing the 2021 implementation of rates approved as part of the general rate case, test yearSouthwest is 2021, there is no separate attrition increase for 2021; however, thealso authorized to implement annual PTY attrition increases of 2.75% will continue, the first annual adjustment of which began in 2022, as approved in the most recent rate case decision.
Greenhouse Gas (“GHG”) Compliance. California Assembly Bill Number 32 and regulations promulgated by the California Air Resources Board, require Southwest, as a covered entity, to comply with applicable requirements associated with California GHG emissions reporting and the California Cap and Trade Program. The CPUC issued a decision in 2018 adopting an allocation methodology to distribute the net revenues or costs. Southwest began amortizing its then existing net cost balance over a 12-month period with recovery rates effective July 2018 for all applicable rate schedules. In addition, for years 2019-2020, the decision adopted an allocation methodology to distribute the revenue proceeds through a California Climate Credit to active residential customers in April of each year, following initial required credits in October 2018. Amounts distributed in April 2019 and 2020 were comparable. GHG compliance costs recovered through rates have no impact on earnings.
Renewable Natural Gas. In February 2019, Southwest filed an application that, among other things, sought to formally allow renewable natural gas (or biomethane) as an includible component of Southwest’s gas supply portfolio through the Biomethane Gas Program (“BGP”). This proposal was designed to further the goals of the California Global Warming Solutions Act of 2006, the California Low Carbon Fuel Standard, Senate Bills 1383 and 1440, as well as current or future legislative or regulatory efforts to reduce greenhouse gas emissions. Implementation of the BGP addresses cost recovery as part of Southwest’s existing Gas Cost Incentive Mechanism related to the purchase or sale of biomethane. The CPUC issued a final decision approving the proposal in March 2020.January 2022.
Customer Data Modernization Initiative.Initiative (“CDMI”). In April 2019, Southwest filed an application with the CPUC seeking authority to establish a two-way, interest bearinginterest-bearing balancing account to record costs associated with the CDMI to mitigate adverse financial implications associated with this multi-year project. Approximately $19 million of the estimated $174 million total for the CDMI would be allocable to the California rate jurisdiction. Southwest filedproject (including a separate request to establish a memorandum account while the CPUC considered its application request to establish the two-way balancing account.new customer information system, ultimately implemented in May 2021). Effective October 2019, the CPUC granted Southwest’sa memorandum account, request, which would allowallowed Southwest to track costs, including operations and maintenance costs and capital-related costs, such as depreciation, taxes, and return associated with California’s portion of the CDMI.CDMI (initially estimated at $19 million). The balance tracked in the memorandum account would bewas transferred to the two-way balancing account if approved. In January 2020, Southwest and the Public Advocates Office reached a settlement agreement to adopt Southwest’s Application and the CPUC issued a final decision approving the settlement agreement as filed in July 2020. A rate to begin recovering the balance accumulated through June 30, 2020 was established and made effective September 1, 2020, furtherand updated in January 2021, August 2021, and willJanuary 2022. This rate is expected to be updated annually thereafter each January.at least annually.
Emergency Relief Program Related to COVID-19. Carbon Offset Program.In March 2020,2022, Southwest filed an application to seek approval to offer a voluntary program to California customers to purchase carbon offsets in light of the COVID-19 pandemic, Southwest requestedan effort to provide customers additional options to reduce their respective GHG emissions. A request to establish a memorandumtwo-way balancing account to track program-related costs and revenues was included as part of the application. Southwest anticipates a decision in 2023.
Nevada Jurisdiction
Nevada General Rate Case. On August 31, 2021, Southwest filed its most recent general rate case, which was further updated by a certification filing on December 17, 2021. The request proposed a combined revenue increase of approximately $28.7 million (as of certification); the most significant driver for the new request is the necessity to reflect in rates the substantial capital investments that have been made since the end of the test year in the previous case, including the customer protections under Emergency Relief regulationsinformation system that was implemented in CaliforniaMay 2021. The filing included a proposed return on common equity of 9.90% with a target equity ratio of 51%; recovery over two years of approximately $6.6 million in 2019 (inpreviously deferred late payment charges related to a regulatory asset associated with COVID-19; and continuation of full revenue decoupling under the eventGeneral Revenues Adjustment (“GRA”) mechanism. The filing utilized a test year ended May 31, 2021 with certification-period adjustments through November 30, 2021. On February 7, 2022, the parties filed a stipulation with the PUCN, providing for a statewide revenue increase of $14.05 million, a return on common equity of 9.40% relative to a 50% target equity ratio, and continuation of Southwest’s full revenue decoupling mechanism. The stipulation was approved by the commission, and new rates became effective April 1, 2022. The commission’s order did not include recovery of the approximate $6.6 million in previously deferred late payment charges related to a regulatory asset associated with COVID 19 (as noted below).
General Revenues Adjustment. As noted above, the continuation of the GRA was affirmed as part of Southwest’s most recent general rate case with an expansion to include a large customer class (with average monthly throughput requirements greater than 15,000 therms), effective April 2022. Southwest makes Annual Rate Adjustment (“ARA”) filings to update rates to recover or return amounts associated with various regulatory mechanisms, including the GRA. Southwest made its most recent ARA filing in November 2021 related to balances as of September 30, 2021. New rates related to that filing will be effective July 1, 2022. While there is no impact to net income overall from adjustments to recovery rates associated with the related regulatory balances, operating cash flows are impacted by such changes.
COYL Program. In August 2021, Southwest filed a joint petition with the Regulatory Operations Staff of the PUCN proposing a Nevada COYL replacement program to include residential COYLs, public school COYLs, and any other COYLs that are identified to be a safety concern. The petition was approved in January 2022 and provides for capital investments up to $5 million per year for five years and the establishment of a state or federal declared emergency or disaster). The CPUC passed an emergency resolution on April 16, 2020 authorizing and directing utilities to implement customer protections and to establish memorandum accountsregulatory asset to track the financial impactscapital-related costs. After five years, the program will be reassessed to determine if it should be continued.
Infrastructure Replacement Mechanism. In 2014, the PUCN approved final rules for the Gas Infrastructure Replacement (“GIR”) mechanism, which provided for the deferral and recovery of complyingcertain costs associated with accelerated replacement of qualifying infrastructure that would not otherwise provide incremental revenues between general rate cases. Associated with the resolution. On May 1, 2020, Southwest requested to establish a COVID-19 Pandemic Protections Memorandum Account (“CPPMA”) to record all incremental costsreplacement of various types of pipe infrastructure under the mechanism (Early Vintage Plastic Pipe, COYL, and lost revenues incurred by Southwest associated with its implementation ofVSP), the COVID-19 customer protections as outlined in the CPUC resolution. The customer protections were retroactively applied to March 4, 2020, the date Governor Gavin Newsom declared a state of emergency related to COVID-19. The CPPMA was originally effective March 4, 2020 through April 16, 2021, but was extended through June 30, 2021. These customer protections focus on flexible payment plan options, additional
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SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  March 31, 20212022

protections for income-qualified customers, as well as the suspension of disconnections for non-payment and the waiver of deposit and late fee requirements. Tracked amounts will be considered by the CPUC for future recovery.
Nevada Jurisdiction
Nevada General Rate Case.Southwest filed a general rate case application with the PUCN in February 2020, which requested a statewide overall general rate increase of approximately $38.3 million. The request sought an ROE of 10% relative to a proposed capital structure of 50% equity and continuation of the General Revenues Adjustment (“GRA”) mechanism (full revenue decoupling). The request also proposed the recovery of previously excluded costs attributable to several software applications. In June 2020, Southwest submitted its certification filing to update certain balances through May 31, 2020, which increased its overall proposed rate increase to $38.5 million. The commission issued its final order in September 2020, which provided for an authorized combined revenue increase of approximately $23 million for northern and southern Nevada and continuation of the currently authorized 9.25% ROE, with a capital structure of 49.26% equity and 50.74% debt. Southwest’s existing GRA was authorized to continue without modification. Full cost recovery of the unamortized balance of excluded software projects from the previous general rate case was authorized in this case, along with the inclusion of all proposed Gas Infrastructure Replacement (“GIR”) and Mesquite Expansion projects in rate base, and full recovery of test year and certification operations and maintenance expenses associated with the CDMI project. Rates became effective in October 2020.
In association with the previous Nevada rate case decision in December 2018, management requested reconsideration of several issues in the case; however, the PUCN ultimately granted no further rate relief. Management decided to seek judicial review of the PUCN’s rate order, which was considered in January 2020. The District Court Judge deferred to the PUCN’s original findings. In March 2020, Southwest filed an appeal with the Nevada Supreme Court, which remains active; the resolution will likely take 12-24 months from the date of the appeal. 
General Revenues Adjustment. The continuation of the GRA was affirmed as part of Southwest’s recently concluded general rate case, effective October 2020. Southwest makes Annual Rate Adjustment (“ARA”) filings to update rates to recover or return amounts associated with various regulatory mechanisms, including the GRA. In June 2019, Southwest made its annual filing, which provided for a decrease of approximately $8 million for an over-collected balance in southern Nevada and an increase of approximately $2 million in northern Nevada. The proposed changes were approved, with rates effective January 2020. In May 2020, Southwest made its most recent ARA filing, which proposed an annualized margin decrease of $5.3 million in southern Nevada and an increase of $1.6 million in northern Nevada. The ARA filing was resolved through a settlement of the parties, in which the proposed changes associated with the GRA were approved, effective January 2021. While there is no impact to net income overall from adjustments to recovery rates associated with the related regulatory balances, operating cash flows are impacted by such changes.
Infrastructure Replacement Mechanism. In 2014, the PUCN approved final rules for the GIR mechanism, which defers and provides for recovery of certain costs associated with accelerated replacement of qualifying infrastructure that would not otherwise currently provide incremental revenues. Associated with the replacement of various types of pipe infrastructure under the mechanism (Early Vintage Plastic Pipe, COYL, and VSP), the related regulations provide Southwest with the opportunity to file a GIR “Advance Application” annually generally in May, to seek preapproval of qualifying replacement projects.
Furthermore,In cases where preapproval of projects is requested and granted, a GIR rate application is generallyseparately filed each October to reset the GIR recovery surcharge rate related to previously approved and completed projects, with new rates typically becoming effective each January. On October 1, 2019, Southwest filed a rate application to reset the recovery surcharge to include cumulative deferrals through August 31, 2019. This surcharge rate became effective February 2020, designed to result in a reduction in annual revenue of approximately $5.3 million in southern Nevada and no incremental revenue in northern Nevada.projects. On September 30, 2020,2021, Southwest filed its latest rate application to reset the recovery surcharge to include cumulative deferrals through August 31, 2020.2021. The updated surcharge rate is expected to result in a reduction inan annual revenue decrease of approximately $11.8$1.4 million in southern Nevada and an annual revenue increase of $66,000 in northern Nevada. The parties reached a stipulation that was approved by the commission and new rates became effective January 2021.1, 2022.
Conservation and Energy Efficiency. The PUCN allows deferral (and later recovery) of approved conservation and energy efficiency costs, recovery rates for which are adjusted in association with ARA filings. In its June 2019 ARA filing, Southwest proposed annualized margin increases of $3.2 million and $880,000 in southern and northern Nevada, respectively. However, Southwest entered into a stipulation and agreement to modify these amounts to $6.2 million and $1.1 million in southern and northern Nevada, respectively, which reflected the recovery of a related but separate program balance to be rolled into customer rates with the same effective date. The modification was approved, and rates became effective January 2020. In its May 2020November 2021 ARA filing, Southwest proposed annualized margin decreases of $313,000$574,000 and $55,000$434,700 for southern and northern Nevada, respectively, which were approvedrequested to become effective in July 2022. In May 2021, Southwest filed its Conservation and became effective January 2021.Energy Efficiency plan for the years 2022 – 2024, with a proposed annual budget amount of approximately $3 million. A PUCN decision received in the fourth quarter 2021 authorized the continuation of Southwest’s currently authorized programs and an annual budget of approximately $1.3 million.
Expansion and Economic Development Legislation.Legislation. In January 2016, final regulations were approved by the PUCN associated with legislation (“SB 151”) previously introduced and signed into law in Nevada. The legislation authorized natural gas utilities to expand their infrastructure to provide service to unserved and underserved areas in Nevada.
In November 2017, Southwest filed for preapproval of a project to extend service to Mesquite, Nevada, in accordance with the SB 151 regulations. Ultimately, the PUCN issued an order approving Southwest’s proposal for the expansion, and Southwest provides periodic updates and adjusts the rates to recover the revenue requirement associated with the investments to serve customers as part of the ARA filings and rate case proceedings. As of March 2022, approximately 40 miles of natural gas infrastructure has been installed throughout the Mesquite expansion area.
In June 2019, Southwest filed for preapproval to construct the infrastructure necessary to expand natural gas service to Spring Creek, near Elko, Nevada, and to implement a cost recovery methodology to recover the associated revenue requirement consistent with the SB 151 regulations. The expansion facilities consist of a high-pressure approach main and associated regulator stations, an interior backbone, and an extension of the distribution system from the interior backbone. The total capital investment was estimated to be $61.9 million. A stipulation was reached with the parties and approved by the PUCN in December 2019, including in regard to the rate recovery allocation amongst northern Nevada, Elko, and Spring Creek expansion customers. Construction began in the third quarter of 2020, and service commenced to the first Spring Creek customers in December 2020. As of March 31, 2022, approximately 28 miles of natural gas infrastructure has been installed throughout the Spring Creek expansion area, and is anticipated to be completed in 2026.
Regulatory Asset Related to COVID-19. The PUCN issued an order directing utilities within the state to establish regulatory asset accounts, effective March 12, 2020, the date the Governor declared a state of emergency related to COVID-19, to track the financial impacts associated with maintaining service for customers affected by COVID-19, including those whose service would have been otherwise terminated/disconnected. These amounts, totaling approximately $6.6 million, were included in Southwest’s recently concluded general rate case request. The commission ultimately decided that the deferred late payment charges that made up the $6.6 million did not qualify as costs of maintaining service and denied recovery. However, this amount was previously fully reserved by management pending the outcome of the ultimate proceeding.
Carbon Offset Program. In June 2021, Southwest filed an application to seek approval to offer a voluntary program to northern and southern Nevada customers to purchase carbon offsets in an effort to provide customers additional options to reduce their respective GHG emissions. A request to establish a regulatory asset to track program-related costs and revenues was included as part of the application. The parties reached a stipulation that was approved by the commission in December 2021 approving Southwest’s proposal. Implementation of the program is expected in the second quarter of 2022.
FERC Jurisdiction
General Rate Case. In 2020, Great Basin Gas Transmission Company (“Great Basin”), a wholly owned subsidiary of Southwest, reached an agreement in principle with the FERC Staff providing that its three largest transportation customers and all storage customers would be required to have primary service agreement terms of at least five years, that term-differentiated rates would continue generally, and included a 9.90% pre-tax rate of return. Interim rates were made effective February 2020. As part of the settlement, Great Basin will not file a rate case later than May 31, 2025.
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SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  March 31, 2021

to expand their infrastructure to provide service to unserved and underserved areas in Nevada.
In November 2017, Southwest filed for preapproval of a project to extend service to Mesquite, Nevada, in accordance with the SB 151 regulations. Ultimately, the PUCN issued an order approving Southwest’s proposal for the expansion. The order approved a capital investment of approximately $28 million and the construction of approximately 37 miles of distribution pipeline (including the approach main). The annual revenue requirement associated with the project is $2.8 million. A volumetric rate, applicable to all southern Nevada customers (including new customers in Mesquite), was implemented in October 2019 to recover the cost. Southwest’s May 2020 ARA filing, which proposed an annualized margin increase of $185,000, reflects the cumulative deferred revenue requirement associated with the Mesquite facilities that were placed in service through April 30, 2020. During 2020, Southwest continued serving certain customers in Mesquite from an approved “virtual” pipeline network, providing temporary natural gas supply using portions of the approved distribution system and compressed natural gas. Construction of the tap site, approach main, as well as distribution mains was completed and facilities were placed in service in December 2020.
In June 2019, Southwest filed for preapproval to construct the infrastructure necessary to expand natural gas service to Spring Creek, Nevada, and to implement a cost recovery methodology to timely recover the associated revenue requirement consistent with the SB 151 regulations. Expansion to the Spring Creek area near Elko, Nevada consists of a high-pressure approach main and associated regulator stations, an interior backbone, and the extension of the distribution system from the interior backbone system. The total capital investment was estimated to be $61.9 million. A stipulation in this matter was reached with the parties and approved by the PUCN in December 2019, which largely accepted Southwest’s proposal with modifications reflected in the rate recovery allocations split amongst northern Nevada, Elko, and Spring Creek expansion customers. Construction of the initial phase of the expansion began in the third quarter of 2020, and service commenced to the first Spring Creek customers in December 2020.
Customer Data Modernization Initiative.In March 2019, Southwest filed a request seeking authority to establish a regulatory asset to defer the revenue requirement related to the CDMI to mitigate the financial attrition associated with the multi-year project. Approximately $59 million of the estimated $174 million cost of the CDMI would be allocable to the Nevada rate jurisdictions. A hearing on this matter was held in August 2019 and the PUCN issued its decision in September 2019, denying Southwest’s request for regulatory asset treatment, finding a general rate case to be the most appropriate avenue to address such costs. In response to the PUCN’s decision, Southwest filed a Petition for Reconsideration in October 2019, which was denied. As part of Southwest’s recently approved general rate case filing, Southwest was authorized to include CDMI operations and maintenance costs since the beginning of the test year as part of its revenue requirement in the case. The customer service system portion of the project was placed in service in May 2021, and the gas transaction system portion is expected to follow later in 2021.
Regulatory Asset Related to COVID-19. The PUCN issued an order directing utilities within the state to establish regulatory asset accounts, effective March 12, 2020, the date that Governor Steve Sisolak declared a state of emergency related to COVID-19, to track the financial impacts associated with maintaining service for customers affected by COVID-19, including those whose service would have been otherwise terminated/disconnected. These costs will be considered by the PUCN for future recovery.
FERC Jurisdiction
General Rate Case. Paiute Pipeline Company (“Paiute”), a wholly owned subsidiary of Southwest, filed a general rate case with the FERC in May 2019. The filing fulfilled an obligation from the settlement agreement reached in the 2014 Paiute general rate case. In January 2020, Paiute reached an agreement in principle with the FERC Staff and intervenors to settle its most recent general rate case. In addition to continuing the term-differentiated rate structures with its shippers, the agreement requires Paiute’s three largest transportation customers and all of its storage customers to extend their service agreements to have primary terms of at least five years. The settlement resulted in a revenue reduction of approximately $700,000 and is based on a 9.90% pre-tax rate of return. Also as part of this agreement, Paiute agreed not to file a rate case prior to January 1, 2022 but no later than May 31, 2025.
In January 2020, Paiute requested, and was granted, the authority to place the settlement rates into effect on an interim basis, effective February 2020. On March 30, 2020, Paiute filed the proposed settlement agreement with the FERC for review and approval. On July 6, 2020, the FERC issued a letter order approving the settlement, and the order became final on August 5, 2020.
38

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONMarch 31, 2021

PGA Filings
The rate schedules in all of Southwest’s service territories contain provisions that permit adjustment to rates as the cost of purchased gas changes. These deferred energy provisions and purchased gas adjustment clauses are collectively referred to as “PGA” clauses. Differences between gas costs recovered from customers and amounts paid for gas by Southwest result in over- or under-collections. Balances are recovered from or refunded to customers on an ongoing basis with interest. As of March 31, 2021,2022, under-collections in each of Southwest’s service territories resulted in an asset of $238.9$368 million on the Company’s and Southwest’s Condensed Consolidated Balance Sheets. The significant changeincrease in the PGA balance was due to incremental natural gasduring the first quarter of 2022 includes nearly $400 million in commodity and transmission costs associated with an extreme weather event in the central U.S. in mid-February 2021.incurred during this period. See also Deferred Purchased Gas Costs in Note 1 – Background, Organization, and Summary of Significant Accounting Policies in this quarterly report on Form 10-Q.
Filings to change rates in accordance with PGA clauses are subject to audit by state regulatory commission staffs. PGA changes impact cash flows but have no direct impact on profitoperating margin. However, gas cost deferrals and recoveries can impact comparisons between periods of individual consolidated income statement components. These include Gas operatingRegulated operations revenues, Net cost of gas sold, Net interest deductions, and Other income (deductions).
The following table presents Southwest’s outstanding PGA balances receivable/(payable):
(Thousands of dollars)(Thousands of dollars)March 31, 2021December 31, 2020March 31, 2020(Thousands of dollars)March 31, 2022December 31, 2021March 31, 2021
ArizonaArizona$194,446 $(3,901)$(17,538)Arizona$255,472 $214,387 $194,446 
Northern NevadaNorthern Nevada3,036 (8,601)(3,154)Northern Nevada13,700 12,632 3,036 
Southern NevadaSouthern Nevada31,849 (42,134)(2,585)Southern Nevada93,153 55,967 31,849 
CaliforniaCalifornia9,555 2,053 (3,221)California5,629 8,159 9,555 
$238,886 $(52,583)$(26,498)$367,954 $291,145 $238,886 
Not included in the PGA balances table above are $297,000 at March 31, 2022 and $5.7 million at December 31, 2021 in deferred purchased gas cost liabilities for MountainWest.
Capital Resources and Liquidity
Historically, cash on hand and cash flows from operations have provided a substantial portion of cash used in investing activities (primarily for construction expenditures and property additions). In recent years, Southwest has undertaken significant pipe replacement activities to fortify system integrity and reliability, including on an accelerated basis in association with certain gas infrastructure replacement programs. This accelerated activity has necessitated the issuance of both debt and equity securities to supplement cash flows from operations. The Company, endeavorsin executing on its plans to fund the MountainWest acquisition, initially funded the transaction through short-term borrowings, which would be refinanced through a multi-pronged permanent financing plan by the second quarter of 2022, some of which was executed during the first quarter of 2022 as the Company used $452 million in net proceeds from its underwritten offering of common stock to repay a portion of such short-term borrowings. In the interim, its working capital resources are necessarily low compared to its short-term obligations, which will be alleviated once management completes its execution on the remainder of its plan. The Company’s capitalization strategy is to maintain an appropriate balance of equity and debt to preserve investment-grade credit ratings, which shouldhelp minimize interest costs. Investment-grade credit ratings have been maintained following the acquisition.
The Company’s Cash and cash equivalents as of March 31, 2022 and December 31, 2021 were $625 million and $223 million, respectively. The increase in Cash and cash equivalents between periods is largely attributable to Southwest’s net proceeds received from the $600 million 4.05% Senior Notes issuance in March 2022, which were partially used in March 2022 to pay down amounts then outstanding on the credit facility, and in April 2022, to redeem the $250 million 3.875% Senior Notes then maturing, in addition to funding interest payments on various debt ($23 million), with the remaining cash available for general corporate purposes. Additionally, the Company received a $34 million dividend from MountainWest in March 2022, which was partially used in April 2022 to pay a post-closing payment adjustment to the sellers in connection with the MountainWest acquisition (see Note 8 - Business Acquisitions).
Cash Flows
Southwest Gas Holdings, Inc.:
Operating Cash Flows. Cash flows from consolidated operating activities decreased $324increased $239 million in the first three months of 20212022 as compared to the same period of 2020.2021. The declineimprovement in cash flows primarily resulted from amounts underthe change in purchased gas adjustment mechanisms,costs, including amounts resulting from the temporary escalationincurred and deferred, as well as when amounts are incorporated in gas commodity prices during the first quarter of 2021 associated with the extreme cold temperatures in the central U.S. (see Note 1 – Background, Organization, and Summary of Significant Accounting Policies), and also from a decrease ($25 million) in recoveries relatedcustomer bills to the Arizona decoupling mechanism balance between three-month periods.
Investing Cash Flows. Cash used in consolidated investing activities decreased $56 million in the first three months of 2021 as compared to the samerecover or return deferred balances. The prior period of 2020. The change was primarily due to a decrease in capital expenditures in both reportable segments.
Financing Cash Flows. Net cash provided by consolidated financing activities increased $265 million in the first three months of 2021 as compared to the same period of 2020. The change was primarily due to Southwest’s $250 million Term Loan issued in the first quarter of 2021 to fund the increased cost of natural gas supply noted above during the extreme cold weather event. Additionally, the Company issued $46 million in common stock under its equity shelf program in the first three months of 2021. Other changes relate to borrowing and repayment activity related to the credit facilities between comparative periods in both segments, and proceeds fromincluded a $50 million equipment loan inincremental contribution to the prior-year quarter.
During the three months ended March 31, 2021, the Company also issued 49,500 shares of common stock through the Dividend Reinvestment and Stock Purchase Plan, raising approximately $3.1 million.
The capital requirements and resources of the Company generally are determined independently for the natural gas operations and utility infrastructure services segments. Each business activity is generally responsible for securing its own external debtnoncontributory qualified
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SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  March 31, 20212022

retirement plan (reflected as a change in other liabilities and deferred credits). Other impacts include benefits from depreciation and changes in components of working capital overall, including collections of accounts receivable balances in the utility infrastructure services segment.
The corporate and administrative expenses/outflows for Southwest Gas Holdings, Inc. in the three- and twelve-month periods ended March 31, 2022 include expenses incurred related to shareholder activism, in addition to expenses and financing costs for the MountainWest acquisition, as well as expenses for services performed following December 31, 2021, but related to the acquisition.
Investing Cash Flows. Cash used in consolidated investing activities increased $9 million in the first three months of 2022 as compared to the same period of 2021. The change was primarily due to an increase in capital expenditures in the natural gas distribution segment.
Financing Cash Flows. Net cash provided by consolidated financing activities increased $163 million in the first three months of 2022 as compared to the same period of 2021. The change was primarily due to Southwest’s issuance of $600 million in notes, in addition to the Company’s $452 million in net proceeds from the issuance of common stock in an underwritten public offering in the current period. Part of the proceeds of Southwest’s notes issuance was used to pay down the amounts then outstanding under the long-term portion of its credit facility. The Company used the net proceeds from the common stock issuance to repay a portion of its 364-day Term Loan Facility that was funded in December 2021. In February 2022, Southwest also redeemed $25 million 7.78% series Medium-term notes then maturing. By comparison, the prior period included $203 million net proceeds from the short-term portion of Southwest’s credit facility and the Company’s credit facility, all of which is considered short-term.
The capital requirements and resources of the Company generally are determined independently for the individual business segments. Each business segment is generally responsible for securing its own financing sources. However, the holding company may raise funds through stock issuances or other external financing sources. See Note 4 – Common Stock.sources in support of each business segment.
Southwest Gas Corporation:
Operating Cash Flows. Cash flows fromprovided by operating activities decreased $354increased $260 million in the first three months of 20212022 as compared to the same period of 2020.2021. The declineimprovement in operating cash flows was primarily attributable to the impacts related to deferred purchased gas costs, and the Arizona decoupling mechanism noted above.as well as to other working capital changes.
Investing Cash Flows. Cash used in investing activities decreased $44increased $10 million in the first three months of 20212022 as compared to the same period of 2020.2021. The change was primarily due to a decreaseincreases in capital expenditures in 2021.2022 as compared to the same period in the prior year. See also Gas Segment Construction Expenditures and Financing below.
Financing Cash Flows. Net cash provided by financing activitiesactivities increased $$179 million in th304 million in thee first three months of 20212022 as compared to the same period of 2020. 2021. The increase was primarily due to Southwest’s issuance of $600 million in notes in the first quarter of 2022 that was not used until April 2022 to redeem $250 million Term Loan issuedin maturing notes, but was used to repay the then outstanding amounts on its credit facility. Offsetting this increase was the redemption of $25 million 7.78% series Medium-term notes that matured in February 2022, parent contributions received in the first quarter of 2021 that did not recur in 2022, and proceeds in the prior year from a $250 million Term Loan issued to fund increased gas purchased costs during the increased cost of natural gas supply noted above related to the extreme cold weather event. Additionally, in the prior-year period, Southwest had more repayment activity for the portion of its revolving credit facility that is designated for working capital purposes.2021 freeze. See Note 5 – Debt.
Gas Segment Construction Expenditures, Debt Maturities, and Financing
During the twelve-month period ended March 31, 2021,2022, construction expenditures for the natural gas operationsdistribution segment were $647$615 million (not including amounts incurred for capital expenditures but not yet paid). The majority of these expenditures represented costs associated with scheduled and acceleratedthe replacement of existing transmission, distribution, and general plant.plant to fortify system integrity and reliability.
Management estimates natural gas segment construction expenditures during the three-yearfive-year period ending December 31, 20232026 will be approximately $2.12.5 to $3.5 billion. Of this amount, approximately $700$650 million to $700 million is scheduled to be incurred in 2021.2022. Southwest plans to continue to request regulatory support to undertake projects, or to accelerate projects as necessary, for the improvement of system flexibility and reliability, or to expand, where relevant, to unserved or underserved areas. Southwest may expand existing, or initiate new, programs. Significant replacement activities are expected to continue well beyond the next few years. See also Rates and Regulatory Proceedings. During the three-year period, cash flows from operating activities of Southwest are expected to provide approximately 50%69% of the funding for gas operations of Southwest and total construction expenditures and dividend requirements. As of March 31, 2022, Southwest had $250 million, 3.875% notes maturing (repaid in April 2022), and a $250 million Term Loan due in March 2023. Any additional cash requirements, including construction-related, and paydownpay down or refinancing of debt, are expected to be provided by existing credit facilities,
45

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONMarch 31, 2022

equity contributions from the Company, and/or other external financing sources. The timing, types, and amounts of additional external financings will be dependent on a number of factors, including the cost of gas purchases, conditions in the capital markets, timing and amounts of rate relief, timing and amounts of surcharge collections from, or amounts returned to, customers related to other regulatory mechanisms and programs, as well as growth levels in Southwest’s service areas and earnings. External financings may include the issuance of debt securities, bank and other short-term borrowings, and other forms of financing.
In May 2019, the Company filed with the Securities and Exchange Commission (the “SEC”) an automatic shelf registration statement for the offer and sale of up to $300 million of common stock from time to time in at-the-market offerings under the prospectus included therein in accordance with the Sales Agency Agreement, dated May 8, 2019, between the Company and BNY Mellon Capital Markets, LLC. The Company issued the remaining capacity ($46 million) under this equity program during the quarter ended March 31, 2021. During the twelve months ended March 31, 2021, 2,623,469 shares were issued in at-the-market offerings at an average price of $66.96 per share with gross proceeds of $175.7 million, agent commissions of $1.8 million, and net proceeds of $173.9 million under this equity shelf program.
In April 2021, the Company entered into a Sales Agency Agreement between the Company and BNY Mellon Capital Markets, LLC and J.P. Morgan Securities LLC for the offer and sale of up to $500 million of common stock from time to time in at-the-market offerings under the related prospectus supplement filed with the SEC the same month. Net proceeds from the sales of common stock under this equity shelf program are intended for general corporate purposes, including the acquisition of property for the construction, completion, extension, or improvement of pipeline systems and facilities located in and around the communities served by Southwest, as well as for the repayment or repurchase of indebtedness (including amounts outstanding from time to time under the credit facilities, senior notes, Term Loan or future credit facilities), and to provide for working capital.
Bonus Depreciation
In 2017, with the enactment of U.S. tax reform, the bonus depreciation deduction percentage changed from 50% to 100% for “qualified property” placed in service after September 27, 2017 and before 2023. The bonus depreciation tax deduction phases out starting in 2023, by 20% for each of the five following years. Qualified property excludes most public utilityregulated operations property. The
40

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONMarch 31, 2021

Company estimates bonus depreciation will defer the payment of approximately $20$27 million (which relates to utility infrastructure services operations) of federal income taxes for 2021, none of which relates to natural gas operations.2022.
Dividend Policy
Dividends are payable on the Company’s common stock at the discretion of the Board of Directors (the “Board”).Board. In setting the dividend rate, the Board currently targets a payout ratio of 55% to 65% of consolidated earnings per share and considers, among other factors, current and expected future earnings levels, our ongoing capital expenditure plans, and expected external funding needs, in addition toand our ability to maintain strong investment-grade credit ratings and liquidity. The Company has paid dividends on its common stock since 1956 and has increased that dividend each year since 2007. In February 2021,2022, the Board elected to increase the quarterly dividend from $0.57$0.595 to $0.595$0.62 per share, representing a 4.4% 4.2% increase, effective with the June 20212022 payment.
Liquidity
Liquidity refers to the ability of an enterprise to generate sufficient amounts of cash through its operating activities and external financing to meet its cash requirements. Several factors (some of which are out of the control of the Company) that could significantly affect liquidity in the future include: variability of natural gas prices, changes in ratemaking policies of regulatory commissions, regulatory lag, customer growth in the natural gas distribution segment, the ability to access and obtain capital from external sources, interest rates, changes in income tax laws, pension funding requirements, inflation, and the level of earnings. Natural gas prices and related gas cost recovery rates, as well as plant investment, have historically had the most significant impact on liquidity.
On an interim basis, Southwest defers over- or under-collections of gas costs to PGA balancing accounts. In addition, Southwest uses this mechanism to either refund amounts over-collected or recoup amounts under-collected as compared to the price paid for natural gas during the period since the last PGA rate change went into effect. At March 31, 2021,2022, the combined balance in the PGA accounts totaled an under-collection of $239$368 million. See PGA Filings for more information.
In March 2021,2022, Southwest issued aamended its $250 million Term Loan, that will mature inextending the maturity date to March 2022, or 364 days after issuance.21, 2023. The proceeds were originally used to fund the increased cost of natural gas supply during the month of February 2021 caused by extreme weather conditions in the central U.S. The Term Loan was extended as a result of the current gas cost environment and management’s funding plans for purchases.
In March 2022, Southwest Gas Holdings, Inc. hasissued $600 million aggregate principal amount of 4.05% Senior Notes at a discount of 0.65%. The notes will mature in March 2032. Southwest used the net proceeds to redeem $250 million 3.875% notes due in April 2022 and to repay outstanding amounts under its credit facility, with a borrowing capacity of $100 million that expires in April 2025. This facility is intendedthe remaining net proceeds used for short-term financing needs. At March 31, 2021, $43 million was outstanding under this facility.general corporate purposes.
Southwest has a credit facility, with a borrowing capacity of $400 million, which expires in April 2025. Southwest designates $150 million of the facility for long-term borrowing needs and the remaining $250 million for working capital purposes. The maximum amount outstanding on the long-term portion of the credit facility (including a commercial paper program, as noted below)program) during the first three months of 20212022 was $150$150 million the same amount which was outstanding as of March 31, 2021.. The maximum amount outstanding on the short-term portion of the credit facility during the first quarterthree months of 20212022 was $125$85 million. As of March 31, 2021, $17 million was2022, no borrowings were outstanding on the short-term portionor long-term portions of this credit facility. The credit facility can be used as necessary to meet liquidityliquidity requirements, including temporarily financing under-collected PGA balances, or meeting the refund needs of over-collected balances. The credit facility has been adequate for Southwest’s working capital needs outside of funds raised through operations and other types of external financing. As indicated, any additional cash requirements would include the existing credit facility, equity contributions from the Company, and/or other external financing sources.
46

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONMarch 31, 2022

Southwest has a $50 million commercial paper program. Any issuance under the commercial paper program is supported by Southwest’s current revolving credit facility and, therefore, does not represent additional borrowing capacity. Any borrowing under the commercial paper program during 20212022 will be designated as long-term debt. Interest rates for the commercial paper program are calculated at the current commercial paper rate during the borrowing term. At March 31, 2021,2022, there was $50 millionwere no borrowings outstanding under this program.
Centuri has a senior secured revolving credit and term loan facility with borrowing capacity of $590 million (refer tofacility. The Note 5 – Debt). The line of credit portion comprises $325$400 million; associated amounts borrowed and repaid are available to be re-borrowed. The term loan facility portion has a limit ofprovided approximately $265 million.$1.145 billion. The $590 million credit and term loanloan facility expires on August 27, 2028 and the revolving credit facility expires on August 27, 2026. This multi-currency facility allows the borrower to request loan advances in November 2023. It iseither Canadian dollars or U.S. dollars. The obligations under the credit agreement are secured by present and future ownership interests in substantially all direct and indirect subsidiaries of Centuri, substantially all of Centuri’s assets except those explicitly excluded under the termstangible and intangible personal property of each borrower, certain of their direct and indirect subsidiaries, and all products, profits, and proceeds of the agreement (including owned real estate and certain certificated vehicles).foregoing. Centuri assets securing the facility at March 31, 2021 totaled $1.32022 totaled $2.4 billion. TheThe maximum amount outstanding on the combined facility during the first three months of 20212022 was $249 million, at which point $223 million was outstanding on the term portion.$1.2 billion. As of March 31, 2021, $262022, $108 million was outstanding on the revolving credit facility, in addition to the $223 million$1.01 billion that remainedwas outstanding on the term loan portion of the facility. Also at March 31, 2021,2022, there was approximately $267$239 million, net of letters of credit, available for borrowing under the line of credit.
Southwest Gas Holdings, Inc. has a credit facility with a borrowing capacity of $200 million that expires in December 2026. This facility is intended for short-term financing needs. At March 31, 2022, $69 million was outstanding under this facility.
In November 2021, the Company entered into a $1.6 billion delayed-draw Term Loan Facility that was funded on December 31, 2021 in connection with the acquisition of MountainWest. This term loan matures on December 30, 2022. There was $1.16 billion outstanding under this Term Loan Facility as of March 31, 2022, included in the total of $1.474 billion of total short-term debt and current maturities of $291 million. This contributed to a negative working capital position of $584 million as of March 31, 2022, and the Company does currently not have sufficient liquidity or capital resources to repay this debt at maturity without issuing new debt or equity. In April 2022, the Company used a portion of proceeds from the issuance of $600 million Senior Notes issued in March 2022 to redeem $250 million in Senior Notes then maturing and included in current maturities as of March 31, 2022. In March 2022, the Company used net proceeds from the issuance of a common stock offering (see below) to repay a portion of borrowings under the Term Loan Facility. Management intends to satisfy the remainder of this obligation through the issuance of long-term debt. However, management maintains the discretion to seek alternative sources, and can provide no assurances as to its ability to refinance this obligation with the intended method or on attractive terms.
In March 2022, the Company sold, through a prospectus supplement under its Universal Shelf program, an aggregate of 6,325,000 shares of common stock, with an underwritten public offering price of $74.00 per share, resulting in proceeds to the Company of $452.2 million, net of the underwriters’ discount of $15.8 million. The Company used the net proceeds to repay a portion of the outstanding borrowings under the 364-day term loan credit agreement that was used to initially fund the MountainWest acquisition.
In April 2021, the Company entered into a Sales Agency Agreement between the Company and BNY Mellon Capital Markets, LLC and J.P. Morgan Securities LLC (the “Equity Shelf Program”) for the offer and sale of up to $500 million of common stock from time to time in at-the-market offerings under the related prospectus supplement filed with the Securities and Exchange Commission (the “SEC”) the same month. There was no activity under this multi-year program during the first quarter of 2022. Net proceeds from the sales of shares of common stock under the Equity Shelf Program are intended for general corporate purposes, including the acquisition of property for the construction, completion, extension, or improvement of pipeline systems and facilities located in and around the communities served by Southwest, as well as for repayment or repurchase of indebtedness (including amounts outstanding from time to time under the credit facilities, senior notes, Term Loan or future credit facilities), and to provide for working capital. The Company had approximately $341.8 million available under the program as of March 31, 2022.
During the twelve months ended March 31, 2022, 2,302,407 shares were issued in at-the-market offerings under the foregoing program at an average price of $68.70 per share with gross proceeds of $158.2 million, agent commissions of $1.6 million, and net proceeds of $156.6 million under the equity shelf program noted above. See Note 4 – Common Stock for more information.
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SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  March 31, 20212022

Interest rates for the credit facilities of the holding company, Southwest, and Centuri, and for Southwest’sCompany’s Term Loan Facility and Centuri’s credit facility contain LIBOR-based rates. Upon the occurrence of certain events providing for a transition away from LIBOR, or if LIBOR is no longer a widely recognized benchmark rate, the holding company and Southwest may amend their respective credit facility as set forth in the credit facility agreement, and also in the case of Southwest’s Term Loan, to accommodate a replacement benchmark as set forth in the agreements. LIBOR isCertain LIBOR-based rates are scheduled to be discontinued as a benchmark or reference rate after 2021.2021, while other LIBOR-based rates are scheduled to be discontinued after June 2023. As of March 31, 2022, the Company had $2.17 billion billion in aggregate outstanding borrowings under Centuri’s credit facility and the Company’s Term Loan Facility. In order to mitigate the impact of a LIBOR discontinuance on the Company’s and Southwest’s financial condition and results of operations, management will monitor developments and work with lenders, where relevant, to determine the appropriate replacement/alternative reference rate for variable rate debt. At this time the Company and Southwest can provide no assurances as to the impact a LIBOR discontinuance will have on theirits financial condition or results of operations. Any alternative rate may be less predictable or less attractive than LIBOR.
The Company has a Sales Agency Agreement with BNY Mellon Capital Markets, LLC and J.P. Morgan Securities LLC for the offer and sale of up to $500 million of common stock from time to time in at-the-market offerings, which is an additional source of liquidity.
Forward-Looking Statements
This quarterly report contains statements which constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995 (“Reform Act”). All statements other than statements of historical fact included or incorporated by reference in this quarterly report are forward-looking statements, including, without limitation, statements regarding the Company’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,” and similar words and expressions are generally used and intended to identify forward-looking statements. For example, statements regarding plans to review a full range of strategic alternatives to maximize stockholder value, refinance near-term maturities, to separate Centuri from the Company, those regarding operating margin patterns, customer growth, the composition of our customer base, price volatility, seasonal patterns, payment of debt, the Company’s COLI strategy, replacement market and new construction market, our intent and ability to complete planned acquisitions and at amounts originally set out, impacts from the COVID-19 pandemic, including on our employees, customers, or otherwise, our financial position, revenue, earnings, cash flows, debt covenants, operations, regulatory recovery, work deployment or resumption and related uncertainties stemming from this pandemic or otherwise, expected impacts of valuation adjustments associated with any redeemable noncontrolling interest, 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 PHMSAPipeline 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 SB151SB 151 legislation, forecasted operating cash flows and results of operations, net earnings impacts or recovery of costs from gas infrastructure replacement and COYL 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, the outcome of judicial review of the previous Nevada rate case, rates and surcharges, PGA administration and recovery, and other rate adjustments, sufficiency of working capital and current credit facilities, 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 the existing at-the-market equity program or otherwise, future dividend increases and the Board’s current target dividend payout ratio, 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, and the final resolution for recovery of the CDMICDMI-related amounts and balances in all jurisdictions,any jurisdiction, and statements regarding pending approvals are forward-looking statements. All forward-looking statements are intended to be subject to the safe harbor protection provided by the Reform Act.
A number of important factors affecting the business and financial results of the Company 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, the impacts of COVID-19 including that which may result from a continued or sustained restriction on commerce by government officials or otherwise, including impacts on employment in our territories, the health impacts to our customers and employees due to the persistence of the virus or virus variants or efficacy of vaccines, the ability to collect on customer accounts due to the currentsuspension or an extendedlifted moratorium on late fees or service disconnection in any or all jurisdictions, the ability to obtain regulatory recovery of all costs and financial impacts resulting from this pandemic, the ability of the infrastructure services business to resume or continue work with all customers and the impact of a delay or termination of work as a result thereof, the impacts of future restrictions placed on our business by government regulation or otherwise (such as self-imposed restrictions for the safety of employees and customers), including related to personal distancing, investment in personal protective equipment and other protocols, the impact of a resurgence of the virus following the ongoing resumption of commerce in our territories,or its variants, and decisions of Centuri customers (including Southwest) as to whether to pursue capital projects due to economic impacts resulting from the pandemic or otherwise, the ability to recover and timing thereof related to costs associated with the PGA mechanisms or other
4248

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  March 31, 20212022

otherwise, the ability to recover and timing thereof related to costs associated with the PGA mechanismsregulatory assets or other regulatory assets,programs, the effects of regulation/deregulation, governmental or regulatory policy regarding pipeline safety, greenhouse gas emissions, natural gas or alternative energy, the regulatory support for ongoing infrastructure programs or expansions, the timing and amount of rate relief, the timing and methods determined by regulators to refund amounts to customers resulting from U.S. tax reform, changes in rate design, 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, the impact of variable rate indebtedness associated with or without a discontinuance of LIBOR including in relation to amounts of indebtedness then outstanding, 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 planned (including accretion within the first twelve months or other periods) and future acquisition-related costs, the timing and magnitude of costs necessary to integrate and stand up newly acquired operations, administration, and systems, and the ability to complete stand-up for MountainWest prior to the expiration of the transition services agreement, the ability to attract, hire, and maintain necessary staff and management for our collective operations, impacts of changes in value of any redeemable noncontrolling interest 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), 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 or otherwise, delays in commissioning individual projects, acquisitions and management’s plans related thereto, the ability of management to successfully finance, close, and assimilate acquired businesses, the impact on our stock price or our credit ratings due to undertaking or failing to undertake acquisition activity or other strategic endeavors, the impact on our stock price, costs, or businesses from the stock rights program, actions or disruptions of significant shareholders and costs related thereto, 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 and other intangible assets. 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 in future periods. For additional information on the risks associated with the Company’s business, see Item 1A. Risk Factors and Item 7A. Quantitative and Qualitative Disclosures About Market Risk in the Annual Report on Form 10-K for the year ended December 31, 2020.2021.
All forward-looking statements in this quarterly report are made as of the date hereof, based on information available to the Company and Southwest as of the date hereof, and the Company and Southwest assume no obligation to update or revise any of its forward-looking statements, even if experience or future changes show that the indicated results or events will not be realized. We caution you not to unduly rely on any forward-looking statement(s).
ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK
See Item 7A. Quantitative and Qualitative Disclosures about Market Risk in the 20202021 Annual Report on Form 10-K filed with the SEC. No material changes have occurred related to the disclosures about market risk.
ITEM 4. CONTROLS AND PROCEDURES
Management of Southwest Gas Holdings, Inc. and Southwest Gas Corporation has established disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended (the “Exchange Act”)) that are designed to provide reasonable assurance that information required to be disclosed in their respective reports filed or submitted under the Exchange Act is recorded, processed, summarized, and reported within the time periods specified in the SEC’s rules and forms and to provide reasonable assurance that such information is accumulated and communicated to management of each company, including each respective Chief Executive Officer and Chief Financial Officer, as appropriate, to allow timely decisions regarding required disclosures. A control system, no matter how well conceived and operated, can provide only reasonable, not absolute, assurance that the objectives of the control system are met. Further, the design of a control system must reflect the fact that there are resource constraints, and benefits of controls must be considered relative to their costs. Additionally, controls can be circumvented by the individual acts of some persons, by collusion of two or more people, or management override of the control. Because of the inherent limitations in a cost-effective control system, misstatements due to error or fraud may occur and may not be detected.
Based on the most recent evaluation, as of March 31, 2021,2022, management of Southwest Gas Holdings, Inc., and Southwest Gas Corporation, including the Chief Executive Officer and Chief Financial Officer, believes the Company’s disclosure controls and procedures are effective at attaining the level of reasonable assurance noted above.
There have been no changes in the Company’s internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) of the Exchange Act) during the first quarter of 2021 that have materially affected, or are likely to materially affect, the Company’s internal control over financial reporting.
Based on the most recent evaluation, as of March 31, 2021, management of Southwest Gas Corporation, including the Chief Executive Officer and Chief Financial Officer, believes Southwest’s disclosure controls and procedures are effective at attaining the level of reasonable assurance noted above.
4349

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  March 31, 20212022

There have been no changes in the Company’s or Southwest’s internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) of the Exchange Act) during the first quarter of 20212022 that have materially affected, or are likely to materially affect Southwest’sthe Company’s internal control over financial reporting.
In May 2021, the Company implemented a new customer service system, which involved replacing the legacy functionality for customer invoicing, customer service administration, and ancillary activities. The customer service system is being deployed for transactions starting in May 2021, and was not utilized in preparing the first quarter 2021 financial information. Management monitored developments related to the customer service system replacement, including working with the project team to ensure control impacts were identified and documented, in order to assist management in evaluating impacts to internal control. System integration and user acceptance testing were conducted to aid management in its evaluations. Post-implementation reviews of the system and impacted business processes are being conducted to enable management to evaluate the design and effectiveness of internal controls.
PART II - OTHER INFORMATION
ITEM 1. LEGAL PROCEEDINGS
The Company isand Southwest are named as a defendant in various legal proceedings. The ultimate dispositions of these proceedings are not presently determinable; however, it is the opinion of management that none of this litigation individually or in the aggregate will have a material adverse impact on the Company’s or Southwest’s financial position or results of operations. See Contingency withinNote 1 – Background, Organization, and Summary of Significant Accounting Policies for ongoing litigation, including litigation filed by certain stockholders and by funds managed by Carl Icahn.
ITEM 1A. Described below is a risk factor that we have identified that may have a negative impact on our future financial performance or affect whether we achieve the goals or expectations expressed or implied in any forward-looking statements contained herein. This risk factor supplements, and does not replace, the Risk Factors and other disclosures made in our Annual Report on Form 10-K filed March 1, 2022.
General Risks
Our ongoing review of strategic alternatives could materially impact our strategic direction, business, and results of operations. We can provide no assurances as to the structure or timing of any strategic transaction or that one will be completed at all.
On April 18, 2022, we announced that our Board authorized a thorough review of a full range of strategic alternatives to maximize stockholder value. As part of this process, the Company will evaluate a sale of the Company, as well as a range of alternatives, including, but not limited to, a separate sale of its business units and/or pursuing the previously disclosed spin-off of Centuri. A committee of the Board, comprised entirely of independent directors, is overseeing the process. The timing, benefits, and outcome of the strategic review process or the structure, terms and specific risks and uncertainties associated with any particular strategic transaction are uncertain. Pursuit of any such strategic alternative could result in material disruptions in our business and otherwise have an adverse effect on the trading price of our common stock or our results of operations. We can provide no assurances as to the structure or timing of any potential strategic transaction or that one will be completed at all.
ITEMS 1A2 through 3. None.
ITEM 4. MINE SAFETY DISCLOSURES Not applicable.
ITEM 5. OTHER INFORMATION None.
50

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONMarch 31, 2022

ITEM 6. EXHIBITS
The following documents are filed, or furnished, as applicable, as part of this report on Form 10-Q:
Exhibit 10.014.01-
Exhibit 4.02-
Exhibit 4.03-
Exhibit 10.1-
Exhibit 31.0131.01*-
Exhibit 31.0231.02*-
Exhibit 32.0132.01*-
Exhibit 32.0232.02*-
Exhibit 101.INS101*-The following materials from the Quarterly Report on Form 10-Q of Southwest Gas Holdings, Inc. and Southwest Gas Corporation for the quarter ended March 31, 2022, were formatted in Inline XBRL Instance Document - the(Extensible Business Reporting Language): (1) Southwest Gas Holdings, Inc. and Subsidiaries Condensed Consolidated Balance Sheets, (ii) Southwest Gas Holdings, Inc. and Subsidiaries Condensed Consolidated Statements of Income, (iii) Southwest Gas Holdings, Inc. and Subsidiaries Condensed Consolidated Statements of Comprehensive Income, (iv) Southwest Gas Holdings, Inc. and Subsidiaries Condensed Consolidated Statements of Cash Flows, (v) Southwest Gas Holdings, Inc. and Subsidiaries Condensed Consolidated Statements of Equity, (vi) Southwest Gas Corporation and Subsidiaries Condensed Consolidated Balance Sheets, (vii) Southwest Gas Corporation and Subsidiaries Condensed Consolidated Statements of Income, (viii) Southwest Gas Corporation and Subsidiaries Condensed Consolidated Statements of Comprehensive Income, (ix) Southwest Gas Corporation and Subsidiaries Condensed Consolidated Statements of Cash Flows, (x) Southwest Gas Corporation and Subsidiaries Condensed Consolidated Statements of Equity. The instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document.
Exhibit 101SCH104*-XBRL Schema Document
Exhibit 101.CAL-XBRL Calculation Linkbase Document
Exhibit 101.DEF-XBRL Definition Linkbase Document
Exhibit 101.LAB-XBRL Label Linkbase Document
Exhibit 101.PRE-XBRL Presentation Linkbase Document
Exhibit 104-Cover Page Interactive Data File (embedded within the Inline XBRL document).
*Filed herewith.

4451

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  March 31, 20212022

SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.
Southwest Gas Holdings, Inc.
(Registrant)
Dated: May 6, 202110, 2022
/s/ LORI L. COLVIN
Lori L. Colvin
Vice President/Controller and Chief Accounting Officer
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.
Southwest Gas Corporation
(Registrant)
Dated: May 6, 202110, 2022
/s/ LORI L. COLVIN
Lori L. Colvin
Vice President/Controller and Chief Accounting Officer

4552