UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
Form 10-Q
QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the quarterly period ended September 30, 2021March 31, 2022
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, 60,385,08466,852,050 shares as of OctoberApril 29, 2021.2022.
All of the outstanding shares of common stock ($1 par value) of Southwest Gas Corporation were held by Southwest Gas Holdings, Inc. as of OctoberApril 29, 2021.2022.
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  September 30, 2021March 31, 2022

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  September 30, 2021March 31, 2022

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)
September 30, 2021December 31, 2020March 31, 2022December 31, 2021
ASSETSASSETSASSETS
Utility plant:
Regulated operations plant:Regulated operations plant:
Gas plantGas plant$8,742,806 $8,384,000 Gas plant$10,891,910 $10,789,690 
Less: accumulated depreciationLess: accumulated depreciation(2,499,488)(2,419,348)Less: accumulated depreciation(3,443,053)(3,397,736)
Construction work in progressConstruction work in progress153,100 211,429 Construction work in progress216,262 202,068 
Net utility plant6,396,418 6,176,081 
Other property and investments1,305,334 834,245 
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 equivalents186,690 83,352 Cash and cash equivalents624,666 222,697 
Accounts receivable, net of allowancesAccounts receivable, net of allowances692,135 522,172 Accounts receivable, net of allowances755,947 707,127 
Accrued utility revenueAccrued utility revenue39,700 82,400 Accrued utility revenue52,000 84,900 
Income taxes receivable, netIncome taxes receivable, net32,554 10,884 Income taxes receivable, net16,937 16,816 
Deferred purchased gas costsDeferred purchased gas costs240,827 2,053 Deferred purchased gas costs367,954 291,145 
Prepaid and other current assetsPrepaid and other current assets200,700 170,152 Prepaid and other current assets229,072 292,082 
Total current assetsTotal current assets1,392,606 871,013 Total current assets2,046,576 1,614,767 
Noncurrent assets:Noncurrent assets:Noncurrent assets:
GoodwillGoodwill791,902 345,184 Goodwill1,773,671 1,781,332 
Deferred income taxesDeferred income taxes268 455 Deferred income taxes44 121 
Deferred charges and other assetsDeferred charges and other assets483,107 508,875 Deferred charges and other assets450,786 458,536 
Total noncurrent assetsTotal noncurrent assets1,275,277 854,514 Total noncurrent assets2,224,501 2,239,989 
Total assetsTotal assets$10,369,635 $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 - 60,378,684 and 57,192,925 shares)$62,009 $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 capital1,823,889 1,609,155  Additional paid-in capital2,273,837 1,824,216 
Accumulated other comprehensive loss, netAccumulated other comprehensive loss, net(55,951)(61,003)Accumulated other comprehensive loss, net(43,972)(46,761)
Retained earningsRetained earnings1,079,869 1,067,978 Retained earnings1,190,738 1,114,313 
Total equityTotal equity2,909,816 2,674,953 Total equity3,489,082 2,953,820 
Redeemable noncontrolling interest183,547 165,716 
Redeemable noncontrolling interestsRedeemable noncontrolling interests135,984 196,717 
Long-term debt, less current maturitiesLong-term debt, less current maturities3,573,783 2,732,200 Long-term debt, less current maturities4,559,758 4,115,684 
Total capitalizationTotal capitalization6,667,146 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 debt297,271 40,433  Current maturities of long-term debt291,069 297,324 
Short-term debtShort-term debt272,000 107,000 Short-term debt1,474,000 1,909,000 
Accounts payableAccounts payable222,959 231,301 Accounts payable256,606 353,365 
Customer depositsCustomer deposits51,816 67,920 Customer deposits57,620 59,327 
Income taxes payable, netIncome taxes payable, net27,490 12,556 Income taxes payable, net10,416 6,734 
Accrued general taxesAccrued general taxes60,656 48,640 Accrued general taxes83,897 53,473 
Accrued interestAccrued interest38,600 20,536 Accrued interest42,421 30,964 
Deferred purchased gas costsDeferred purchased gas costs— 54,636 Deferred purchased gas costs297 5,736 
Other current liabilitiesOther current liabilities384,442 328,945 Other current liabilities413,872 396,126 
Total current liabilitiesTotal current liabilities1,355,234 911,967 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, net789,141 647,453 Deferred income taxes and investment tax credits, net803,771 768,868 
Accumulated removal costsAccumulated removal costs419,000 404,000 Accumulated removal costs488,908 480,583 
Other deferred credits and other long-term liabilitiesOther deferred credits and other long-term liabilities1,139,114 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 credits2,347,255 2,251,017 Total deferred income taxes and other credits2,434,465 2,386,987 
Total capitalization and liabilitiesTotal capitalization and liabilities$10,369,635 $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  September 30, 2021March 31, 2022

SOUTHWEST GAS HOLDINGS, INC. AND SUBSIDIARIES
CONDENSED CONSOLIDATED STATEMENTS OF INCOME
(In thousands, except per share amounts)
(Unaudited)
Three Months Ended
September 30,
Nine Months Ended
September 30,
Twelve Months Ended
September 30,
Three Months Ended
March 31,
Twelve Months Ended
March 31,
202120202021202020212020 2022202120222021
Operating revenues:Operating revenues:Operating revenues:
Gas operating revenues$255,848 $210,834 $1,070,576 $976,095 $1,445,066 $1,355,666 
Regulated operations revenuesRegulated operations revenues$743,532 $521,932 $1,743,390 $1,369,690 
Utility infrastructure services revenuesUtility infrastructure services revenues632,848 580,392 1,525,448 1,408,698 2,065,038 1,877,264 Utility infrastructure services revenues523,877 363,975 2,318,563 1,978,770 
Total operating revenuesTotal operating revenues888,696 791,226 2,596,024 2,384,793 3,510,104 3,232,930 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 sold63,710 36,321 296,227 264,615 374,449 356,925 Net cost of gas sold298,918 156,021 573,804 338,037 
Operations and maintenanceOperations and maintenance122,927 101,764 334,450 304,964 437,602 407,924 Operations and maintenance149,303 106,690 515,759 411,025 
Depreciation and amortizationDepreciation and amortization91,380 80,139 267,670 245,009 354,688 324,995 Depreciation and amortization122,646 93,442 400,245 337,816 
Taxes other than income taxesTaxes other than income taxes20,109 15,787 60,134 47,507 76,087 63,195 Taxes other than income taxes24,816 20,687 84,472 67,769 
Utility infrastructure services expensesUtility infrastructure services expenses567,270 502,951 1,381,524 1,252,489 1,858,464 1,671,478 Utility infrastructure services expenses503,232 335,614 2,123,085 1,745,729 
Total operating expensesTotal operating expenses865,396 736,962 2,340,005 2,114,584 3,101,290 2,824,517 Total operating expenses1,098,915 712,454 3,697,365 2,900,376 
Operating incomeOperating income23,300 54,264 256,019 270,209 408,814 408,413 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(31,298)(28,311)(81,201)(83,141)(109,537)(111,705)Net interest deductions(48,363)(23,964)(143,597)(107,061)
Other income (deductions)Other income (deductions)(3,112)1,799 (3,975)(11,046)282 (7,788)Other income (deductions)1,244 448 (2,703)14,429 
Total other income and (expenses)Total other income and (expenses)(34,410)(26,512)(85,176)(94,187)(109,255)(119,493)Total other income and (expenses)(47,119)(23,516)(146,300)(92,632)
Income (loss) before income taxes(11,110)27,752 170,843 176,022 299,559 288,920 
Income tax expense (benefit)(1,816)6,689 34,818 42,073 58,498 63,065 
Net income (loss)(9,294)21,063 136,025 133,949 241,061 225,855 
Net income attributable to noncontrolling interest2,282 2,790 5,189 5,169 6,681 5,357 
Net income (loss) attributable to Southwest Gas Holdings, Inc.$(11,576)$18,273 $130,836 $128,780 $234,380 $220,498 
Earnings (loss) per share:
Income before income taxesIncome before income taxes121,375 149,937 218,288 355,452 
Income tax expenseIncome tax expense24,125 31,092 32,681 70,627 
Net incomeNet income97,250 118,845 185,607 284,825 
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.$96,178 $117,293 $179,664 $277,075 
Earnings per share:Earnings per share:
BasicBasic$(0.19)$0.32 $2.23 $2.31 $4.03 $3.97 Basic$1.58 $2.04 $3.00 $4.90 
DilutedDiluted$(0.19)$0.32 $2.23 $2.31 $4.02 $3.97 Diluted$1.58 $2.03 $2.99 $4.89 
Weighted average shares:Weighted average shares:Weighted average shares:
BasicBasic59,688 56,271 58,639 55,683 58,209 55,508 Basic60,737 57,600 59,919 56,564 
DilutedDiluted59,816 56,357 58,742 55,753 58,312 55,577 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  September 30, 2021March 31, 2022

SOUTHWEST GAS HOLDINGS, INC. AND SUBSIDIARIES
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
(Thousands of dollars)
(Unaudited)
Three Months Ended
September 30,
Nine Months Ended
September 30,
Twelve Months Ended
September 30,
Three Months Ended
March 31,
Twelve Months Ended
March 31,
202120202021202020212020 2022202120222021
Net income (loss)$(9,294)$21,063 $136,025 $133,949 $241,061 $225,855 
Net incomeNet income$97,250 $118,845 $185,607 $284,825 
Other comprehensive income (loss), net of taxOther comprehensive income (loss), net of taxOther comprehensive income (loss), net of tax
Defined benefit pension plans:Defined benefit pension plans:Defined benefit pension plans:
Net actuarial loss— — — — (43,730)(54,026)
Net actuarial gain (loss)Net actuarial gain (loss)— — 44,974 (43,730)
Amortization of prior service costAmortization of prior service cost183 220 547 659 766 901 Amortization of prior service cost33 182 580 840 
Amortization of net actuarial lossAmortization of net actuarial loss8,474 7,187 25,420 21,563 32,608 26,004 Amortization of net actuarial loss6,616 8,474 32,036 30,037 
Prior service cost— — — — — (1,426)
Regulatory adjustmentRegulatory adjustment(7,277)(6,380)(21,831)(19,140)2,959 21,130 Regulatory adjustment(5,523)(7,277)(65,273)4,753 
Net defined benefit pension plansNet defined benefit pension plans1,380 1,027 4,136 3,082 (7,397)(7,417)Net defined benefit pension plans1,126 1,379 12,317 (8,100)
Forward-starting interest rate swaps (“FSIRS”):Forward-starting interest rate swaps (“FSIRS”):Forward-starting interest rate swaps (“FSIRS”):
Amounts reclassified into net income (loss)413 783 1,240 2,054 1,653 2,689 
Amounts reclassified into net incomeAmounts reclassified into net income416 413 1,655 2,244 
Net forward-starting interest rate swapsNet forward-starting interest rate swaps413 783 1,240 2,054 1,653 2,689 Net forward-starting interest rate swaps416 413 1,655 2,244 
Foreign currency translation adjustmentsForeign currency translation adjustments(2,056)1,024 (324)(1,187)2,576 (280)Foreign currency translation adjustments1,247 823 444 6,541 
Total other comprehensive income (loss), net of tax(263)2,834 5,052 3,949 (3,168)(5,008)
Comprehensive income (loss)(9,557)23,897 141,077 137,898 237,893 220,847 
Comprehensive income attributable to noncontrolling interest2,282 2,790 5,189 5,169 6,681 5,357 
Comprehensive income (loss) attributable to Southwest Gas Holdings, Inc.$(11,839)$21,107 $135,888 $132,729 $231,212 $215,490 
Total other comprehensive income, net of taxTotal other comprehensive income, net of tax2,789 2,615 14,416 685 
Comprehensive incomeComprehensive income100,039 121,460 200,023 285,510 
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.$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  September 30, 2021March 31, 2022

SOUTHWEST GAS HOLDINGS, INC. AND SUBSIDIARIES
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
(Thousands of dollars)
(Unaudited)
Nine Months Ended
September 30,
Twelve Months Ended
September 30,
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$136,025 $133,949 $241,061 $225,855 Net income$97,250 $118,845 $185,607 $284,825 
Adjustments to reconcile net income to net cash provided by 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 amortization267,670 245,009 354,688 324,995 Depreciation and amortization122,646 93,442 400,245 337,816 
Deferred income taxesDeferred income taxes45,374 37,752 58,339 45,815 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 allowances(62,081)(42,139)(68,714)(76,769)Accounts receivable, net of allowances(44,971)42,892 (139,417)(51,717)
Accrued utility revenueAccrued utility revenue42,700 42,600 (3,200)(700)Accrued utility revenue32,900 31,900 (1,500)(2,400)
Deferred purchased gas costsDeferred purchased gas costs(293,410)59,899 (317,070)38,016 Deferred purchased gas costs(82,248)(291,469)(134,507)(265,385)
Accounts payableAccounts payable(51,086)(59,031)251 (14,817)Accounts payable(82,952)(41,147)8,621 11,882 
Accrued taxesAccrued taxes5,954 17,991 3,134 26,075 Accrued taxes33,964 34,636 (7,397)19,430 
Other current assets and liabilitiesOther current assets and liabilities23,289 121,185 9,531 121,274 Other current assets and liabilities79,680 (5,255)(4,274)25,719 
Gains on sale of equipment(5,365)(581)(6,632)(2,897)
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 compensation7,676 5,789 9,001 6,618 Changes in undistributed stock compensation4,180 3,658 9,816 7,956 
Equity AFUDCEquity AFUDC— (3,413)(1,311)(4,395)Equity AFUDC(258)(981)723 (4,644)
Changes in deferred charges and other assetsChanges in deferred charges and other assets(7,956)(19,174)(21,373)(24,370)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(57,269)(52,018)(67,922)(54,996)Changes in other liabilities and deferred credits(3,704)(50,416)(26,917)(57,365)
Net cash provided by operating activities51,521 487,818 189,783 609,704 
Net cash provided by (used in) operating activitiesNet 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(506,737)(632,474)(699,368)(851,236)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(830,395)(250)(830,145)(28,355)Acquisition of businesses, net of cash acquired— — (2,354,260)— 
Changes in customer advancesChanges in customer advances7,940 7,691 14,282 11,643 Changes in customer advances7,693 4,286 19,381 12,885 
OtherOther14,755 6,520 17,238 8,811 Other893 3,563 15,586 8,136 
Net cash used in investing activitiesNet cash used in investing activities(1,314,437)(618,513)(1,497,993)(859,137)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, net210,812 90,635 259,422 119,240 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(102,292)(93,317)(134,479)(123,099)Dividends paid(35,970)(32,619)(141,573)(128,117)
Issuance of long-term debt, netIssuance of long-term debt, net1,654,960 650,619 1,666,718 699,601 Issuance of long-term debt, net709,927 10,659 2,359,964 573,058 
Retirement of long-term debtRetirement of long-term debt(406,815)(289,295)(473,926)(375,909)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(150,000)(92,000)(58,000)(92,000)Change in credit facility and commercial paper(130,000)— (150,000)— 
Change in short-term debtChange in short-term debt165,000 (157,000)218,000 24,000 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(1,254)(2,736)(1,254)(2,736)Withholding remittance - share-based compensation(1,978)(1,242)(2,000)(1,242)
OtherOther(4,355)(1,596)(6,161)(4,090)Other(7,898)(1,353)(7,274)(4,505)
Net cash provided by financing activitiesNet cash provided by financing activities1,366,056 105,310 1,470,320 245,007 Net 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 equivalents198 (209)635 (109)Effects of currency translation on cash and cash equivalents85 103 142 646 
Change in cash and cash equivalentsChange in cash and cash equivalents103,338 (25,594)162,745 (4,535)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 23,945 28,480 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$186,690 $23,945 $186,690 $23,945 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$57,128 $63,743 $98,567 $103,836 Interest paid, net of amounts capitalized$35,262 $8,303 $131,311 $100,412 
Income taxes paid (received), netIncome taxes paid (received), net$7,665 $(16,006)$12,720 $(13,625)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  September 30, 2021March 31, 2022

SOUTHWEST GAS HOLDINGS, INC. AND SUBSIDIARIES
CONDENSED CONSOLIDATED STATEMENTS OF EQUITY
(In thousands, except per share amounts)
(Unaudited)
Three Months Ended
September 30,
Nine Months Ended
September 30,
Three Months Ended
March 31,
202120202021202020222021
Common stock sharesCommon stock sharesCommon stock shares
Beginning balances59,088 55,910 57,193 55,007 Beginning balances60,422 57,193 
Common stock issuances1,291 549 3,186 1,452 Common stock issuances6,427 802 
Ending balances60,379 56,459 60,379 56,459 Ending balances66,849 57,995 
Common stock amountCommon stock amountCommon stock amount
Beginning balances$60,718 $57,540 $58,823 $56,637 Beginning balances$62,052 $58,823 
Common stock issuances1,291 549 3,186 1,452 Common stock issuances6,427 802 
Ending balances62,009 58,089 62,009 58,089 Ending balances68,479 59,625 
Additional paid-in capitalAdditional paid-in capitalAdditional paid-in capital
Beginning balances1,733,572 1,523,630 1,609,155 1,466,937 Beginning balances1,824,216 1,609,155 
Common stock issuances90,317 36,184 214,734 92,877 Common stock issuances449,621 50,953 
Ending balances1,823,889 1,559,814 1,823,889 1,559,814 Ending balances2,273,837 1,660,108 
Accumulated other comprehensive lossAccumulated other comprehensive lossAccumulated other comprehensive loss
Beginning balances(55,688)(55,617)(61,003)(56,732)Beginning balances(46,761)(61,003)
Foreign currency exchange translation adjustment(2,056)1,024 (324)(1,187)Foreign currency exchange translation adjustment1,247 823 
Net actuarial gain arising during period, less amortization of unamortized benefit plan cost, net of tax1,380 1,027 4,136 3,082 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 783 1,240 2,054 FSIRS amounts reclassified to net income, net of tax416 413 
Ending balances(55,951)(52,783)(55,951)(52,783)Ending balances(43,972)(58,388)
Retained earningsRetained earningsRetained earnings
Beginning balances1,108,279 1,085,742 1,067,978 1,039,072 Beginning balances1,114,313 1,067,978 
Net income (loss)(11,576)18,273 130,836 128,780 Net income96,178 117,293 
Dividends declared(36,098)(32,324)(106,303)(96,161)Dividends declared(41,909)(34,876)
Redemption value adjustments19,264 (17,573)(12,642)(17,573)Redemption value adjustments22,156 (38,018)
Ending balances1,079,869 1,054,118 1,079,869 1,054,118 Ending balances1,190,738 1,112,377 
Total equity ending balancesTotal equity ending balances$2,909,816 $2,619,238 $2,909,816 $2,619,238 Total equity ending balances$3,489,082 $2,773,722 
Dividends declared per common shareDividends declared per common share$0.595 $0.57 $1.785 $1.71 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  September 30, 2021March 31, 2022

SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
CONDENSED CONSOLIDATED BALANCE SHEETS
(Thousands of dollars)
(Unaudited)
September 30, 2021December 31, 2020March 31, 2022December 31, 2021
ASSETSASSETSASSETS
Utility plant:
Regulated operations plant:Regulated operations plant:
Gas plantGas plant$8,742,806 $8,384,000 Gas plant$8,997,234 $8,901,575 
Less: accumulated depreciationLess: accumulated depreciation(2,499,488)(2,419,348)Less: accumulated depreciation(2,572,184)(2,538,508)
Construction work in progressConstruction work in progress153,100 211,429 Construction work in progress196,574 183,485 
Net utility plant6,396,418 6,176,081 
Other property and investments149,926 143,611 
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 equivalents122,758 41,070 Cash and cash equivalents475,876 38,691 
Accounts receivable, net of allowanceAccounts receivable, net of allowance103,430 146,861 Accounts receivable, net of allowance224,885 169,666 
Accrued utility revenueAccrued utility revenue39,700 82,400 Accrued utility revenue52,000 84,900 
Income taxes receivable, netIncome taxes receivable, net17,775 11,155 Income taxes receivable, net5,351 7,826 
Deferred purchased gas costsDeferred purchased gas costs240,827 2,053 Deferred purchased gas costs367,954 291,145 
Receivable from parentReceivable from parent271 1,031 
Prepaid and other current assetsPrepaid and other current assets170,470 152,748 Prepaid and other current assets180,640 242,243 
Total current assetsTotal current assets694,960 436,287 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 assets461,212 490,562 Deferred charges and other assets394,454 405,021 
Total noncurrent assetsTotal noncurrent assets471,307 500,657 Total noncurrent assets404,549 415,116 
Total assetsTotal assets$7,712,611 $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 capital1,617,796 1,410,345  Additional paid-in capital1,620,616 1,618,911 
Accumulated other comprehensive loss, netAccumulated other comprehensive loss, net(55,759)(61,135)Accumulated other comprehensive loss, net(45,371)(46,913)
Retained earningsRetained earnings851,645 835,146 Retained earnings987,177 906,827 
Total equityTotal equity2,462,794 2,233,468 Total equity2,611,534 2,527,937 
Long-term debt, less current maturitiesLong-term debt, less current maturities2,309,857 2,438,206 Long-term debt, less current maturities2,903,556 2,440,603 
Total capitalizationTotal capitalization4,772,651 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 debt275,000 — Current maturities of long-term debt250,000 275,000 
Short-term debtShort-term debt250,000 57,000 Short-term debt250,000 250,000 
Accounts payableAccounts payable113,810 161,646 Accounts payable148,486 234,070 
Customer depositsCustomer deposits51,816 67,920 Customer deposits53,094 56,127 
Accrued general taxesAccrued general taxes60,656 48,640 Accrued general taxes81,423 53,064 
Accrued interestAccrued interest34,938 20,495 Accrued interest34,676 22,926 
Deferred purchased gas costs— 54,636 
Payable to parent207 142 
Other current liabilitiesOther current liabilities155,490 146,046 Other current liabilities169,781 146,422 
Total current liabilitiesTotal current liabilities941,917 556,525 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, net618,597 581,100 Deferred income taxes and investment tax credits, net673,874 638,828 
Accumulated removal costsAccumulated removal costs419,000 404,000 Accumulated removal costs432,000 424,000 
Other deferred credits and other long-term liabilitiesOther deferred credits and other long-term liabilities960,446 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 credits1,998,043 2,028,437 Total deferred income taxes and other credits1,981,768 1,944,114 
Total capitalization and liabilitiesTotal capitalization and liabilities$7,712,611 $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  September 30, 2021March 31, 2022

SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
CONDENSED CONSOLIDATED STATEMENTS OF INCOME
(Thousands of dollars)
(Unaudited)
Three Months Ended
September 30,
Nine Months Ended
September 30,
Twelve Months Ended
September 30,
Three Months Ended
March 31,
Twelve Months Ended
March 31,
202120202021202020212020 2022202120222021
Gas operating revenues$255,848 $210,834 $1,070,576 $976,095 $1,445,066 $1,355,666 
Regulated operations revenuesRegulated operations revenues$676,539 $521,932 $1,676,397 $1,369,690 
Operating expenses:Operating expenses:Operating expenses:
Net cost of gas soldNet cost of gas sold63,710 36,321 296,227 264,615 374,449 356,925 Net cost of gas sold297,121 156,021 572,007 338,037 
Operations and maintenanceOperations and maintenance119,708 101,159 328,980 303,567 431,795 406,169 Operations and maintenance119,636 106,135 452,051 409,429 
Depreciation and amortizationDepreciation and amortization61,359 55,942 187,688 173,865 249,118 230,158 Depreciation and amortization72,114 68,698 256,814 239,268 
Taxes other than income taxesTaxes other than income taxes20,109 15,787 60,134 47,507 76,087 63,195 Taxes other than income taxes21,652 20,687 81,308 67,769 
Total operating expensesTotal operating expenses264,886 209,209 873,029 789,554 1,131,449 1,056,447 Total operating expenses510,523 351,541 1,362,180 1,054,503 
Operating income (loss)(9,038)1,625 197,547 186,541 313,617 299,219 
Operating incomeOperating income166,016 170,391 314,217 315,187 
Other income and (expenses):Other income and (expenses):Other income and (expenses):
Net interest deductionsNet interest deductions(24,922)(26,103)(71,263)(75,152)(97,259)(100,115)Net interest deductions(26,610)(22,166)(102,004)(98,256)
Other income (deductions)Other income (deductions)(4,287)1,751 (4,902)(10,947)(545)(7,615)Other income (deductions)1,315 550 (3,794)14,496 
Total other income and (expenses)Total other income and (expenses)(29,209)(24,352)(76,165)(86,099)(97,804)(107,730)Total other income and (expenses)(25,295)(21,616)(105,798)(83,760)
Income (loss) before income taxes(38,247)(22,727)121,382 100,442 215,813 191,489 
Income tax expense (benefit)(10,703)(6,754)18,798 20,874 33,679 35,496 
Net income (loss)$(27,544)$(15,973)$102,584 $79,568 $182,134 $155,993 
Income before income taxesIncome before income taxes140,721 148,775 208,419 231,427 
Income tax expenseIncome tax expense28,926 30,060 28,204 37,193 
Net incomeNet 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  September 30, 2021March 31, 2022

SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
(Thousands of dollars)
(Unaudited)
Three Months Ended
September 30,
Nine Months Ended
September 30,
Twelve Months Ended
September 30,
Three Months Ended
March 31,
Twelve Months Ended
March 31,
202120202021202020212020 2022202120222021
Net income (loss)$(27,544)$(15,973)$102,584 $79,568 $182,134 $155,993 
Net incomeNet income$111,795 $118,715 $180,215 $194,234 
Other comprehensive income (loss), net of taxOther comprehensive income (loss), net of taxOther comprehensive income (loss), net of tax
Defined benefit pension plans:Defined benefit pension plans:Defined benefit pension plans:
Net actuarial loss— — — — (43,730)(54,026)
Net actuarial gain (loss)Net actuarial gain (loss)— — 44,974 (43,730)
Amortization of prior service costAmortization of prior service cost183 220 547 659 766 901 Amortization of prior service cost33 182 580 840 
Prior service cost— — — — — (1,426)
Amortization of net actuarial lossAmortization of net actuarial loss8,474 7,187 25,420 21,563 32,608 26,004 Amortization of net actuarial loss6,616 8,474 32,036 30,037 
Regulatory adjustmentRegulatory adjustment(7,277)(6,380)(21,831)(19,140)2,959 21,130 Regulatory adjustment(5,523)(7,277)(65,273)4,753 
Net defined benefit pension plansNet defined benefit pension plans1,380 1,027 4,136 3,082 (7,397)(7,417)Net defined benefit pension plans1,126 1,379 12,317 (8,100)
Forward-starting interest rate swaps (“FSIRS”):Forward-starting interest rate swaps (“FSIRS”):Forward-starting interest rate swaps (“FSIRS”):
Amounts reclassified into net income (loss)413 783 1,240 2,054 1,653 2,689 
Amounts reclassified into net incomeAmounts reclassified into net income416 413 1,655 2,244 
Net forward-starting interest rate swapsNet forward-starting interest rate swaps413 783 1,240 2,054 1,653 2,689 Net forward-starting interest rate swaps416 413 1,655 2,244 
Total other comprehensive income (loss), net of taxTotal other comprehensive income (loss), net of tax1,793 1,810 5,376 5,136 (5,744)(4,728)Total other comprehensive income (loss), net of tax1,542 1,792 13,972 (5,856)
Comprehensive income (loss)$(25,751)$(14,163)$107,960 $84,704 $176,390 $151,265 
Comprehensive incomeComprehensive 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  September 30, 2021March 31, 2022

SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
(Thousands of dollars)
(Unaudited)
Nine Months Ended
September 30,
Twelve Months Ended
September 30,
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$102,584 $79,568 $182,134 $155,993 Net income$111,795 $118,715 $180,215 $194,234 
Adjustments to reconcile net income to net cash provided by 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 amortization187,688 173,865 249,118 230,158 Depreciation and amortization72,114 68,698 256,814 239,268 
Deferred income taxesDeferred income taxes35,800 25,633 55,164 23,415 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 allowance43,430 70,129 (22,766)(7,135)Accounts receivable, net of allowance(55,219)(27,631)(50,394)(25,673)
Accrued utility revenueAccrued utility revenue42,700 42,600 (3,200)(700)Accrued utility revenue32,900 31,900 (1,500)(2,400)
Deferred purchased gas costsDeferred purchased gas costs(293,410)59,899 (317,070)38,016 Deferred purchased gas costs(76,809)(291,469)(129,068)(265,385)
Accounts payableAccounts payable(42,536)(50,314)17,396 (476)Accounts payable(67,584)(33,076)23,256 18,441 
Accrued taxesAccrued taxes5,396 15,914 (12,045)29,228 Accrued taxes30,835 41,851 (3,263)(13,011)
Other current assets and liabilitiesOther current assets and liabilities18,608 74,892 (7,739)76,194 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 compensation5,437 4,492 6,239 4,928 Changes in undistributed stock compensation3,239 2,908 6,723 5,706 
Equity AFUDCEquity AFUDC— (3,413)(1,311)(4,395)Equity AFUDC(76)(981)905 (4,644)
Changes in deferred charges and other assetsChanges in deferred charges and other assets(18,726)(27,688)(35,329)(38,357)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(55,905)(52,532)(68,509)(55,536)Changes in other liabilities and deferred credits(4,033)(48,782)(27,637)(58,008)
Net cash provided by operating activities31,066 413,045 42,082 451,333 
Net cash provided by (used in) operating activitiesNet 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(415,398)(525,221)(582,393)(716,564)Construction expenditures and property additions(141,123)(128,544)(614,562)(647,407)
Changes in customer advancesChanges in customer advances7,940 7,691 14,282 11,643 Changes in customer advances7,693 4,285 19,381 12,885 
OtherOther65 183 653 139 Other(918)(121)(829)681 
Net cash used in investing activitiesNet cash used in investing activities(407,393)(517,347)(567,458)(704,782)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 parent202,583 131,961 248,544 165,711 Contributions from parent— 45,984 156,599 173,906 
Dividends paidDividends paid(82,000)(77,500)(109,000)(102,400)Dividends paid(29,200)(26,000)(114,600)(105,300)
Issuance of long-term debt, netIssuance of long-term debt, net297,318 446,508 297,318 446,508 Issuance of long-term debt, net593,862 — 891,180 446,508 
Retirement of long-term debtRetirement of long-term debt— (125,000)— (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(150,000)(92,000)(58,000)(92,000)Change in credit facility and commercial paper(130,000)— (150,000)— 
Change in short-term debtChange in short-term debt193,000 (194,000)250,000 (30,000)Change in short-term debt— 210,000 (17,000)170,000 
Withholding remittance - share-based compensationWithholding remittance - share-based compensation(1,254)(2,736)(1,254)(2,737)Withholding remittance - share-based compensation(1,978)(1,242)(1,999)(1,242)
OtherOther(1,632)(1,186)(1,708)(1,210)Other(489)(205)(2,104)(1,352)
Net cash provided by financing activitiesNet cash provided by financing activities458,015 86,047 625,900 258,872 Net cash provided by financing activities407,195 228,537 737,076 557,520 
Change in cash and cash equivalentsChange in cash and cash equivalents81,688 (18,255)100,524 5,423 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 22,234 16,811 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$122,758 $22,234 $122,758 $22,234 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$53,220 $57,168 $92,778 $94,106 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 $(22,262)Income taxes paid (received), net$— $— $(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  September 30, 2021March 31, 2022

SOUTHWEST GAS CORPORATION AND SUBSIDIARIES
CONDENSED CONSOLIDATED STATEMENTS OF EQUITY
(In thousands)
(Unaudited)
Three Months Ended
September 30,
Nine Months Ended
September 30,
Three Months Ended
March 31,
202120202021202020222021
Common stock sharesCommon stock sharesCommon stock shares
Beginning and ending balances47,482 47,482 47,482 47,482 Beginning and ending balances47,482 47,482 
Common stock amountCommon stock amountCommon stock amount
Beginning and ending balances$49,112 $49,112 $49,112 $49,112 Beginning and ending balances$49,112 $49,112 
Additional paid-in capitalAdditional paid-in capitalAdditional paid-in capital
Beginning balances1,529,419 1,329,843 1,410,345 1,229,083 Beginning balances1,618,911 1,410,345 
Share-based compensation1,435 1,137 4,868 2,397 Share-based compensation1,705 2,015 
Contributions from Southwest Gas Holdings, Inc.86,942 32,461 202,583 131,961 Contributions from Southwest Gas Holdings, Inc.— 45,984 
Ending balances1,617,796 1,363,441 1,617,796 1,363,441 Ending balances1,620,616 1,458,344 
Accumulated other comprehensive lossAccumulated other comprehensive lossAccumulated other comprehensive loss
Beginning balances(57,552)(51,825)(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 tax1,380 1,027 4,136 3,082 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 783 1,240 2,054 FSIRS amounts reclassified to net income, net of tax416 413 
Ending balances(55,759)(50,015)(55,759)(50,015)Ending balances(45,371)(59,343)
Retained earningsRetained earningsRetained earnings
Beginning balances908,757 824,847 835,146 782,108 Beginning balances906,827 835,146 
Net income (loss)(27,544)(15,973)102,584 79,568 Net income111,795 118,715 
Share-based compensation(168)(139)(685)(641)Share-based compensation(445)(350)
Dividends declared to Southwest Gas Holdings, Inc.(29,400)(27,000)(85,400)(79,300)Dividends declared to Southwest Gas Holdings, Inc.(31,000)(27,500)
Ending balances851,645 781,735 851,645 781,735 Ending balances987,177 926,011 
Total Southwest Gas Corporation equity ending balancesTotal Southwest Gas Corporation equity ending balances$2,462,794 $2,144,273 $2,462,794 $2,144,273 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  September 30, 2021March 31, 2022

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).
In October 2021, Southwest Gas Holdings, Inc. (the “Company”) entered into an agreement with Dominion Energy Questar Corporation, a wholly owned subsidiaryThe Company completed the acquisition of Dominion Energy, Inc., to acquire all equity interests in Dominion Energy Questar Pipeline, LLC and related entities (“Questar Pipelines”). Upon closing, 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 will operate as part of a standalone subsidiary of the Company, and will undergo new branding at or subsequent to close. The agreement provides for consideration of $1.545 billion in cash (subject to certain adjustments) and assumption of approximately $430 million of existing long-term debt. The agreement contains certain termination rights, including a mutual termination right exercisable at any time and a unilateral termination right exercisable by either party if certain conditions have not been met by December 31, 2021 (the initial termination date), subject to an extension unilaterally exercisable by either party if certain conditions have not been met, subsequently extending the initial termination date through June 30, 2022. The completion of this transaction is subject to closing conditions, including the expiration or termination of any waiting periodentities under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended, and approval of certain aspects of the transaction by the Federal Communications Commission.MountainWest name. The operations to be acquired wouldoperations further diversify the Company’s business in the midstream sector, with an expansion of regulated interstate natural gas pipelines and underground storage services, as partprimarily 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. The Company plans to initially fund this acquisition with a new 364-day term loan, followed by permanent financing. See Note 5 – Debt8 - 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”), NPL Canada Ltd. (“NPL Canada”), New England Utility Constructors, Inc. (“Neuco”),Neuco, Linetec, Services, LLC (“Linetec”), and Riggs Distler, & Company, Inc. (“Riggs Distler”).and in Canada, primarily as NPL 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 Inc.LLC (“Drum”), including Drum’s most significant operating subsidiary, Riggs Distler, in August 2021, thereby expanding Centuri’s electric infrastructure services footprint in the Northeastnortheast and Mid-Atlanticmid-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 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 as 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, were deemed “essential services.” Management has considered the impact of the pandemic and adjusted certain estimates, where relevant, 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.
13

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  September 30, 2021March 31, 2022

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.
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)September 30, 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$147,187 $140,874 Net cash surrender value of COLI policies$147,987 $149,947 
Other propertyOther property2,739 2,737 Other property3,181 3,146 
Total Southwest Gas CorporationTotal Southwest Gas Corporation149,926 143,611 Total Southwest Gas Corporation151,168 153,093 
Centuri property, equipment, and intangibles1,592,461 1,089,414 
Centuri accumulated provision for depreciation and amortization(468,206)(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 investments31,153 23,961 Other property and investments57,170 59,337 
Total Southwest Gas Holdings, Inc.Total Southwest Gas Holdings, Inc.$1,305,334 $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, cashCash 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 the Company include $55 million of money market fund investments totaling approximately $169 million and $231 million, for Southwest and the Company, respectively, at September 30, 2021,March 31, 2022, and an insignificant amount at$20 million for the Company as of December 31, 2020.2021. The money market fund investmentsbalance for Southwest were insignificant at both balance sheet dates.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 were 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. See also Prepaid and other current assets below.
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.
14

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONSeptember 30, 2021

December 31, 2021.
Accounts Receivable, net of allowances. Business activity with respect to natural gas utility operations is conducted with customers located within 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. Southwest lifted the moratorium on disconnection of natural gas service for non-payment in 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 continues to be in place for California and is expected to be liftedended in the fourth quarter ofNovember 2021. Southwest recommenced assessing late fees on past-due balances in Arizona and Nevada in April 2021, and expects to recommence late fees in California in the fourth quarter 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 impact of COVID-19. The allowance for uncollectible accounts receivable balances as of state-funded arrearage payment assistance programs.September 30, 2021 reflects the expected impact from the pandemic on balances as of that date, including consideration of customers’ ability to pay those amounts that are due.
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 uncollectible accounts 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.
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 term 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 continue 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 (later reduced to approximately $55 million) for pipeline imbalance charges, allegedly incurred during the period of the pipeline’s critical operation condition. However, Southwest formally disputed the imbalance charges, in addition to interest on that amount, believing that no amounts were due to the pipeline. In June 2021, the interstate transmission pipeline company requested approval from the Federal Energy Regulatory Commission (the “FERC”) to waive these imbalance charges and interest, affirming that they had the authority to elect the option to waive the underlying charges based on their tariff, but were seeking approval by the FERC for purposes of transparency and regulatory certainty. In August 2021, FERC approval was received. Consequently, no amounts were recognized by Southwest related to the original charge from the pipeline.
Prepaid and other current assets. Prepaid and other current assets includes gas pipefor Southwest include, among other things, materials and operating supplies of $5560 million at September 30, 2021March 31, 2022 and $5062.9 million at December 31, 20202021 (carried at weighted average cost).
In the third quarter of 2021, 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 classified certain assets associated with its previous corporate headquarters as held for sale. As a result,and the Company and Southwest reclassified approximately $was $52 million as of December 31, million from Net utility plant to Prepaid and other current assets on their respective Condensed Consolidated Balance Sheets during the third quarter2021 in accrued purchased gas cost, with no corresponding asset balance as of 2021; this was a non-cash item and therefore did not impact the Company’s or Southwest’s respective Condensed Consolidated Statements of Cash Flows.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 they 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 ninethree 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
15

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONSeptember 30, 2021

impairment. Through this assessment, no such condition was believed to have existed and therefore, no impairment was deemed to have occurred. The Riggs Distler acquisitionGoodwill in August 2021 (see further discussion in Note 8 - Business Acquisitions) was deemed a stock purchase for tax purposes, and as a result, only pre-acquisition goodwill that was historically tax-deductible by Riggs Distler will continue to be deductible for tax purposes by the Company. Goodwill on Southwest’s and the Company’s Condensed Consolidated Balance Sheets includes:is as follows:
(Thousands of dollars)Natural Gas
Operations
Utility Infrastructure
Services
Total Company
December 31, 2020$10,095 $335,089 $345,184 
Additional goodwill from Riggs Distler acquisition— 446,794 446,794 
Foreign currency translation adjustment— (76)(76)
September 30, 2021$10,095 $781,807 $791,902 
(Thousands of dollars)Natural Gas
Distribution
Utility Infrastructure
Services
Pipeline and StorageTotal Company
December 31, 2021$10,095 $785,058 $986,179 $1,781,332 
Measurement-period adjustments from Riggs Distler acquisition (a)— (574)— (574)
Measurement-period adjustments from MountainWest acquisition (a)— — (8,690)(8,690)
Foreign currency translation adjustment— 1,603 — 1,603 
March 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 includesinclude $35.941.4 million and $32.6$36 million of dividends declared as of September 30, 2021March 31, 2022 and December 31, 2020, respectively, as well as liabilities included as part of the Riggs Distler acquisition.2021, respectively.
Other Income (Deductions). The following table provides the composition of significant items included in Other income (deductions) in Southwest’s and the Company’s Condensed Consolidated Statements of Income:
Three Months Ended September 30,Nine Months Ended
September 30,
Twelve Months Ended
September 30,
Three Months Ended March 31,Twelve Months Ended
March 31,
(Thousands of dollars)(Thousands of dollars)202120202021202020212020(Thousands of dollars)2022202120222021
Southwest Gas Corporation - natural gas operations segment:
Southwest Gas Corporation:Southwest Gas Corporation:
Change in COLI policiesChange in COLI policies$— $4,500 $5,800 $1,000 $14,000 $7,200 Change in COLI policies$(2,000)$2,700 $4,100 $27,400 
Interest incomeInterest income1,365 1,412 3,312 3,214 4,113 4,630 Interest income2,801 716 7,198 3,343 
Equity AFUDCEquity AFUDC— 1,232 — 3,413 1,311 4,395 Equity AFUDC76 981 (905)4,644 
Other components of net periodic benefit costOther components of net periodic benefit cost(3,506)(5,005)(10,516)(15,016)(15,522)(18,780)Other components of net periodic benefit cost(188)(3,505)(10,704)(18,522)
Miscellaneous income and (expense)Miscellaneous income and (expense)(2,146)(388)(3,498)(3,558)(4,447)(5,060)Miscellaneous income and (expense)626 (342)(3,483)(2,369)
Southwest Gas Corporation - total other income (deductions)Southwest Gas Corporation - total other income (deductions)(4,287)1,751 (4,902)(10,947)(545)(7,615)Southwest Gas Corporation - total other income (deductions)1,315 550 (3,794)14,496 
Utility infrastructure services segment:
Centuri, MountainWest, and Southwest Gas Holdings, Inc.:Centuri, MountainWest, and Southwest Gas Holdings, Inc.:
Foreign transaction gain (loss)Foreign transaction gain (loss)(7)— (19)(16)(19)(16)Foreign transaction gain (loss)(3)(16)(9)
Equity AFUDCEquity AFUDC182 — 182 — 
Equity in earnings of unconsolidated investmentsEquity in earnings of unconsolidated investments515 (8)749 121 
Miscellaneous income and (expense)Miscellaneous income and (expense)1,182 48 946 (91)846 (194)Miscellaneous income and (expense)(771)(91)176 (179)
Centuri - total other income (deductions)1,175 48 927 (107)827 (210)
Corporate and administrative— — — — 37 
Consolidated Southwest Gas Holdings, Inc. - total other income (deductions)$(3,112)$1,799 $(3,975)$(11,046)$282 $(7,788)
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 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
1615

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  September 30, 2021March 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 decreased by approximately $22 million during the 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 interest5,189 
 Redemption value adjustment12,642 
Balance, September 30, 2021$183,547 
(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
September 30,
Nine Months Ended
September 30,
Twelve Months Ended
September 30,
Three Months Ended
March 31,
Twelve Months Ended
March 31,
(In thousands)(In thousands)202120202021202020212020(In thousands)2022202120222021
Weighted average basic sharesWeighted average basic shares59,688 56,271 58,639 55,683 58,209 55,508 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)128 86 103 70 103 66 Restricted stock units (1)117 79 125 85 
Weighted average diluted sharesWeighted average diluted shares59,816 56,357 58,742 55,753 58,312 55,577 Weighted average diluted shares60,854 57,679 60,044 56,649 
(1) The number of securities included 115,000112,000 and 76,00075,000 performance shares during the three months ending September 30,March 31, 2022 and 2021, and 2020, 95,000114,000 and 63,000 performance shares during the nine months ending September 30, 2021 and 2020, and 93,000 and 57,00076,000 performance shares during the twelve months ending September 30,March 31, 2022 and 2021, and 2020, respectively, the total of which was derived by assuming that target performance will be achieved during the relevant performance period.
Contingency.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. Claims are expected to be filedIndividuals that were injured have each brought legal claims against Southwest.Southwest and other parties. If Southwest is deemed fully or partially responsible, Southwest estimates its net exposure could be as much asequal to the self-insured retention of $5 million (the maximum noted above). As of September 30,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.
Recent Accounting Standards Updates.
Accounting pronouncements adopted in 2021:
In December 2019, the Financial Accounting Standards Board (the “FASB”On November 29, 2021, Icahn Partners LP and Icahn Master Fund LP (collectively, “Icahn”) 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 updatecommenced an action in the first quarterCourt of 2021,Chancery for the impactState of which was not material to the condensed consolidated financial statements of the Company or Southwest.

Delaware. The action is captioned Icahn Partners LP, et al. v. John P. Hester, et al., C.A. No.
1716

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  September 30, 2021March 31, 2022

Recently issued accounting2021-1031-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 that will be effective after 2021:or adopted in 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. ItManagement 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.

1817

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  September 30, 2021March 31, 2022

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
 September 30,
 Three MonthsNine MonthsTwelve Months
 202120202021202020212020
(Thousands of dollars)      
Service cost$10,289 $8,576 $30,869 $25,725 $39,443 $32,191 
Interest cost10,108 11,388 30,324 34,165 41,714 46,416 
Expected return on plan assets(18,088)(16,324)(54,264)(48,972)(70,588)(64,033)
Amortization of net actuarial loss10,489 9,006 31,467 27,019 40,473 32,608 
Net periodic benefit cost$12,798 $12,646 $38,396 $37,937 $51,042 $47,182 
 SERP
 September 30,
 Three MonthsNine MonthsTwelve Months
 202120202021202020212020
(Thousands of dollars)      
Service cost$131 $97 $394 $292 $491 $359 
Interest cost358 401 1,074 1,204 1,474 1,644 
Amortization of net actuarial loss661 451 1,981 1,353 2,433 1,608 
Net periodic benefit cost$1,150 $949 $3,449 $2,849 $4,398 $3,611 
 PBOP
 September 30,
 Three MonthsNine MonthsTwelve Months
 202120202021202020212020
(Thousands of dollars)      
Service cost$423 $395 $1,269 $1,186 $1,664 $1,505 
Interest cost549 646 1,645 1,936 2,291 2,697 
Expected return on plan assets(810)(852)(2,430)(2,556)(3,282)(3,345)
Amortization of prior service costs239 289 719 867 1,007 1,185 
Net periodic benefit cost$401 $478 $1,203 $1,433 $1,680 $2,042 
For new employees hired on or after January 1, 2022, the defined benefit retirement plan will be replaced with enhanced contributions to the 401(k) plan. The change is not applicable to existing employees, nor to employees hired during the remainder of 2021. Current employees will continue to be eligible to receive employer 401(k) matching contributions on one-half of amounts deferred by them, up to a maximum matching contribution of 3.5% of their eligible annual compensation. Employees hired after 2021 will be eligible for enhanced employer 401(k) contributions of 3% plus a matching contribution (dollar-for-dollar) up to 7% of eligible compensation.
 Qualified Retirement Plan
 March 31,
 Three MonthsTwelve Months
 2022202120222021
(Thousands of dollars)    
Service cost$11,028 $10,290 $41,897 $36,015 
Interest cost11,251 10,108 41,575 44,275 
Expected return on plan assets(19,978)(18,088)(74,242)(67,060)
Amortization of net actuarial loss8,117 10,489 39,583 37,507 
Net periodic benefit cost$10,418 $12,799 $48,813 $50,737 
 SERP
 March 31,
 Three MonthsTwelve Months
 2022202120222021
(Thousands of dollars)    
Service cost$106 $131 $501 $422 
Interest cost360 358 1,433 1,561 
Amortization of net actuarial loss588 660 2,570 2,014 
Net periodic benefit cost$1,054 $1,149 $4,504 $3,997 
 PBOP
 March 31,
 Three MonthsTwelve Months
 2022202120222021
(Thousands of dollars)    
Service cost$485 $423 $1,753 $1,608 
Interest cost613 548 2,258 2,485 
Expected return on plan assets(807)(810)(3,236)(3,366)
Amortization of prior service costs44 240 763 1,106 
Net periodic benefit cost$335 $401 $1,538 $1,833 
Note 3 – Revenue
The following information about the Company’s revenues is presented by segment. Southwest encompasses the natural gas operations segment and Centuri encompasses the utility infrastructure services segment.
1918

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  September 30, 2021March 31, 2022

Note 3 – Revenue
The following information about the Company’s revenues is presented by segment. Southwest encompasses the natural gas distribution segment, 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
September 30,
Nine Months Ended
September 30,
Twelve Months Ended September 30, Three Months Ended
March 31,
Twelve Months Ended March 31,
(Thousands of dollars)(Thousands of dollars)202120202021202020212020(Thousands of dollars)2022202120222021
ResidentialResidential$147,326 $131,008 $743,791 $690,861 $1,011,450 $957,379 Residential$514,586 $403,143 $1,147,055 $983,108 
Small commercialSmall commercial48,283 35,204 185,774 159,122 248,193 228,720 Small commercial123,984 81,398 312,800 220,476 
Large commercialLarge commercial14,199 9,942 40,030 32,588 52,075 45,493 Large commercial20,161 12,673 64,859 44,639 
Industrial/otherIndustrial/other9,608 5,888 30,352 19,089 37,505 25,435 Industrial/other9,972 13,770 38,515 33,310 
TransportationTransportation21,884 21,040 68,217 65,281 91,151 89,364 Transportation26,632 24,536 94,336 88,345 
Revenue from contracts with customersRevenue from contracts with customers241,300 203,082 1,068,164 966,941 1,440,374 1,346,391 Revenue from contracts with customers695,335 535,520 1,657,565 1,369,878 
Alternative revenue program revenues (deferrals)Alternative revenue program revenues (deferrals)12,569 9,199 (5,335)9,545 (2,740)7,629 Alternative revenue program revenues (deferrals)(23,499)(16,373)6,055 (468)
Other revenues (1)Other revenues (1)1,979 (1,447)7,747 (391)7,432 1,646 Other revenues (1)4,703 2,785 12,777 280 
Total Gas operating revenues$255,848 $210,834 $1,070,576 $976,095 $1,445,066 $1,355,666 
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. Also includes the impacts 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
September 30,
Nine Months Ended
September 30,
Twelve Months Ended September 30,
(Thousands of dollars)202120202021202020212020
Service Types:
Gas infrastructure services$393,122 $387,578 $961,836 $935,444 $1,287,552 $1,288,468 
Electric power infrastructure services155,456 115,386 347,061 282,992 475,895 346,432 
Other84,270 77,428 216,551 190,262 301,591 242,364 
Total Utility infrastructure services revenues$632,848 $580,392 $1,525,448 $1,408,698 $2,065,038 $1,877,264 
 Three Months Ended
September 30,
Nine Months Ended
September 30,
Twelve Months Ended September 30,
(Thousands of dollars)202120202021202020212020
Contract Types:
Master services agreement$467,869 $437,914 $1,160,199 $1,076,961 $1,573,247 $1,438,540 
Bid contract164,979 142,478 365,249 331,737 491,791 438,724 
Total Utility infrastructure services revenues$632,848 $580,392 $1,525,448 $1,408,698 $2,065,038 $1,877,264 
Unit price contracts$406,404 $377,284 $1,002,779 $985,673 $1,373,746 $1,359,352 
Fixed price contracts64,632 46,379 149,681 109,935 197,447 142,356 
Time and materials contracts161,812 156,729 372,988 313,090 493,845 375,556 
Total Utility infrastructure services revenues$632,848 $580,392 $1,525,448 $1,408,698 $2,065,038 $1,877,264 

 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 
2019

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  September 30, 2021March 31, 2022

 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 assets), which are both included within Accounts receivable, net of allowances; the table also includesallowances, as well as amounts billed in excess of revenue earned on contracts (contract liabilities), which are included in Other current liabilities as of September 30, 2021March 31, 2022 and December 31, 20202021 on the Company’s Condensed Consolidated Balance Sheets:
(Thousands of dollars)(Thousands of dollars)September 30, 2021December 31, 2020(Thousands of dollars)March 31, 2022December 31, 2021
Contracts receivable, netContracts receivable, net$381,387 $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 billings207,318 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 contracts19,954 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 September 30, 2021March 31, 2022 is due to increases in cash received, net of revenue recognized, from contracts that commenced during the period, offset by revenue recognized of approximately $4.5$11.9 million that was included in this itembalance as of January 1, 2021,2022, after which time it became earned and the balance was reduced; the change also includes 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. 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 September 30, 2021,March 31, 2022, Centuri had 1829 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 September 30, 2021March 31, 2022 was $53.8$205.6 million. Centuri expects to recognize the remaining performance obligations over approximately the next twothree years; 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)September 30, 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$380,484 $273,778 Billed on completed contracts and contracts in progress$308,798 $292,770 
Other receivablesOther receivables2,844 6,692 Other receivables1,430 3,492 
Contracts receivable, grossContracts receivable, gross383,328 280,470 Contracts receivable, gross310,228 296,262 
Allowance for doubtful accountsAllowance for doubtful accounts(1,941)(2,154)Allowance for doubtful accounts(352)(257)
Contracts receivable, netContracts receivable, net$381,387 $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
2120

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  September 30,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
Shares 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 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 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. 333-251074)., or “the Universal Shelf.” There was no activity in the Equity Shelf Program during the 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 September 30, 2021:March 31, 2022:
Three Months EndedLife-To-Date Ended
September 30, 2021
Gross proceeds$87,819,931 $158,180,343 
Less: agent commissions(878,199)(1,581,803)
Net proceeds$86,941,732 $156,598,540 
Number of shares sold1,251,810 2,302,407 
Weighted average price per share$70.15 $68.70 
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 
As of September 30, 2021,March 31, 2022, the Company had up to $341,819,657approximately $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, 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.
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 an underwritten public offering price of $74.00 per share, resulting in proceeds to the Company of $452,253,312, net of an underwriters’ discount of $15,796,688. 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.
During the quarterthree months ended March 31, 2021, the Company sold essentially all of the remaining common stock available for sale under a previously effective equity shelf program.
During the nine months ended September 30, 2021,2022, the Company issued approximately 47,50065,000 shares of common stock through the Restricted Stock/Unit Plan and Omnibus Incentive Plan.
Additionally, during the ninethree months ended September 30, 2021,March 31, 2022, the Company issued 130,00037,000 shares of common stock through the Dividend Reinvestment and Stock Purchase Plan, raising approximately $8.5 million.
On October 10, 2021, the Company’s Board of Directors (the “Board”) authorized and declared a dividend of 1 preferred stock purchase right (a “Right”) for each share of common stock outstanding, $1 par value per share, of the Company to stockholders of record at the close of business on October 21, 2021. Each right entitles the registered holder to purchase from the Company one ten-thousandth (a “unit”) of a share of Series A Junior Participating Preferred Stock, no par value per share, of the Company at a purchase price of $321.70 per unit, subject to adjustment. Generally, the Rights become exercisable in the event any person or group of affiliated or associated persons acquires beneficial ownership of 10% (20% in the case of a passive institutional investor) or more of the Company’s common stock without the approval of the Board, and until such time, are inseparable from and trade with the Company’s common stock. The Rights were issued pursuant to the Rights Agreement dated October 10, 2021 (the “Rights Agreement”), between the Company and Equiniti Trust Company, as rights agent. The Rights expire at the close of business on October 9, 2022 or upon an earlier merger or other acquisition transaction involving the Company, redemption, or exchange as provided in the Rights Agreement.$2.5 million.
22

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  September 30, 2021March 31, 2022

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.
September 30, 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 $167,755 $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 2022250,000 252,208 250,000 258,825 Notes, 3.875%, due 2022250,000 249,993 250,000 250,603 
Notes, 4.875%, due 2043Notes, 4.875%, due 2043250,000 307,385 250,000 317,190 Notes, 4.875%, due 2043250,000 272,933 250,000 307,538 
Notes, 3.8%, due 2046Notes, 3.8%, due 2046300,000 326,058 300,000 347,046 Notes, 3.8%, due 2046300,000 276,144 300,000 329,055 
Notes, 3.7%, due 2028Notes, 3.7%, due 2028300,000 331,536 300,000 344,553 Notes, 3.7%, due 2028300,000 303,660 300,000 325,191 
Notes, 4.15%, due 2049Notes, 4.15%, due 2049300,000 343,950 300,000 370,278 Notes, 4.15%, due 2049300,000 296,361 300,000 342,030 
Notes, 2.2%, due 2030Notes, 2.2%, due 2030450,000 447,287 450,000 474,552 Notes, 2.2%, due 2030450,000 398,066 450,000 440,838 
Notes, 3.18%, due 2051Notes, 3.18%, due 2051300,000 291,351 — — Notes, 3.18%, due 2051300,000 246,813 300,000 292,116 
8% Series, due 20268% Series, due 202675,000 94,752 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 25,513 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 31,936 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 9,116 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(20,727)(17,822)Unamortized discount and debt issuance costs(27,091)(19,959)
2,386,773 2,089,678 2,955,409 2,387,541 
Revolving credit facility and commercial paperRevolving credit facility and commercial paper— — 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(1,916)(1,472)Unamortized discount and debt issuance costs(1,853)(1,938)
198,084 198,528 198,147 198,062 
Less: current maturitiesLess: current maturities(275,000)— Less: current maturities(250,000)(275,000)
Long-term debt, less current maturities - Southwest Gas Corporation$2,309,857 $2,438,206 
Centuri:
Centuri term loan facility$1,145,000 $1,146,431 $226,648 $230,824 
Unamortized debt issuance costs(25,385)(820)
1,119,615 225,828 
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 facility112,236 112,348 26,626 26,645 Centuri secured revolving credit facility108,035 108,060 103,329 103,749 
Centuri other debt obligations54,346 52,682 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(22,271)(40,433)Less: current maturities(41,069)(22,324)
Long-term debt, less current maturities - Centuri$1,263,926 $293,994 
Consolidated Southwest Gas Holdings, Inc.:
Southwest Gas Corporation long-term debt$2,584,857 $2,438,206 
Centuri long-term debt1,286,197 334,427 
Less: current maturities(297,271)(40,433)
Long-term debt, less current maturities - Southwest Gas Holdings, Inc.$3,573,783 $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 
23

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  September 30, 2021March 31, 2022

The fair values of Southwest's and Centuri’s revolving credit facilities and Southwest’s IDRBs are categorized as Level 1 based on the FASB’s fair value hierarchy, due to the 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) and Centuri's term loan facility as of September 30, 2021 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. Prior to amending its secured revolving credit and term loan facility in the third quarter 2021 (see below), the Centuri credit facility was categorized as Level 3, as 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 September 30, 2021,March 31, 2022, the applicable margin is 1.125% for loans bearing interest with reference to LIBORSOFR and 0.125% for loans bearing interest with reference to the alternative base rate. At September 30, 2021,March 31, 2022, no borrowings were outstanding on the long-term portion (including under the commercial paper program, discussed below) of the facility or 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 September 30, 2021,March 31, 2022, as noted above, no borrowings were outstanding under the commercial paper program.
In August 2021,March 2022, Southwest issued $300$600 million aggregate principal amount of 3.18%4.05% Senior Notes at a discount of 0.019%0.65%. The notes will mature in August 2051.March 2032. Southwest used the net proceeds fromto redeem the offering$250 million 3.875% notes due in April 2022 and to repay the outstanding balanceamounts under its credit facility, with the remaining net proceeds used for general corporate purposes.
As referred to above,Centuri has a $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 matures on August 27, 2021, Centuri, in association with2026 and the acquisition of Riggs Distler (see Note 8 - Business Acquisitions), entered into an amended and restated credit agreement. The agreement provided for a $1.145 billion secured term loan facility at a discount of 1.00%, and a $400 million securedmatures on August 27, 2028. Interest rates for the revolving credit facility which in addition to funding the Riggs Distler acquisition, refinanced the previous $590 millionand term loan facility. This multi-currency facility allows the borrower to request loan advancesare based on either a “base rate” or LIBOR, plus an applicable margin in either Canadian dollars or U.S. dollars. Amounts borrowed and repaid undercase. The capacity of the revolving line of credit portion of the facility is $400 million; related amounts borrowed and repaid are available to be re-borrowed. The term loan portion of the facility has a limit of $1.145 billion. 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 the tangible and intangible personal property of each borrower, certain of their direct and indirect subsidiaries, and all products, profits, and proceeds of the foregoing. The term loan facility matures on August 27, 2028 and the revolving credit facility matures on August 27, 2026.
Interest rates for the term loan facility and the revolving credit facility are based on either a “base rate” or LIBOR, plus an applicable margin in either case. The term loan facility is also subject to a LIBOR floor of 0.50%. Furthermore, Centuri Canada Division Inc. may borrow under the revolving credit facility with interest rates based on either a “base rate” or the Canadian Dealer Offered Rate (“CDOR”) plus the applicable margin, at the borrower’s option. The margin for the term loan facility will be 1.50% for base rate loans and 2.50% for LIBOR loans. The margin for the revolving credit facility ranges from 0.0% to 1.25% for base rate loans and from 1.00% to 2.25% for LIBOR loans, depending on Centuri’s net leverage ratio. Upon the occurrence of certain events providing for a transition away from LIBOR, or if LIBOR is no longer a widely recognized benchmark rate, Centuri may further amend the credit agreement with a replacement rate as set forth in the amended agreement. Centuri is also required to pay a commitment fee on the unused portion of the commitments. The commitment fee ranges from 0.15% to 0.35% per annum. The credit agreement contains certain customary representations and warranties, affirmative and negative covenants and events of default. There are no financial covenants related to the term loan facility. The revolving credit facility requires Centuri to maintain a maximum total net leverage ratio of 5.50 to 1.00 with a step-down to 4.75 to 1.0 on December 31, 2022, and a step-down to 4.00 to 1.00 on December 31, 2023; provided, however, Centuri may elect to increase the maximum total net leverage ratio up to 4.50 to 1.00 in connection with certain material acquisitions, with such increase being applicable for one year following such acquisition; and the agreement also requires Centuri to maintain a minimum interest coverage ratio of 2.50 to 1.00. Centuri’s assets securing the facility at September 30, 2021March 31, 2022 totaled $2.6 billion.$2.4 billion. At September 30, 2021, $1.257March 31, 2022, $1.122 billion in borrowings 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 $200 million credit facility that is scheduled to expire in December 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 $69 million outstanding under this credit facility as of March 31, 2022.
As indicated above, under Southwest’s $400 million credit facility, no short-term borrowings were outstanding at March 31, 2022.
In March 2022, Southwest amended its $250 million Term Loan, extending the maturity date to March 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. Management extended the maturity date to fund recent increases in gas purchase costs, as reflected in the PGA. Interest rates for the amended term loan are calculated at either SOFR 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 SOFR and 0.000% for loans bearing interest with reference to an alternate base rate. The amended 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 CORPORATION  September 30, 2021March 31, 2022

Short-Term Debt
Southwest Gas Holdings, Inc. has a $100 million credit facility that is scheduled to expire in April 2025 and is primarily used for short-term financing needs. There was $22 million outstandingThe borrowings under this credit facility as of September 30, 2021.
As indicated above, under Southwest’s $400 million credit facility, no short-term borrowings were outstanding at September 30, 2021.
In March 2021, Southwest entered into a $250 million Term Loan that matures March 22, 2022. The proceeds were 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 Costs in Note 1 – Background, Organization, and Summary of Significant Accounting Policies). Interest rates for the term loan are calculated at either LIBORfacility 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 an “alternate base rate,” plus in each case an applicable margin that is determined based on Southwest’s senior unsecuredcapital resources to repay the term loan facility without issuing new debt or equity. Management intends to issue long-term debt rating. The applicable margin ranges from 0.550% to 1.000% for loans bearing interest with reference to LIBOR and 0.000% for loans bearing interest with reference to an alternate base rate. The 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 aspermanently refinance the remaining portion of the end of any quarter of any fiscal year.
On November 1, 2021, the Company entered into a 364-day term loan credit agreement (the “Credit Agreement”). The Credit Agreement provides 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 by the Company of the equity interests in Questar Pipelines. The Term Loan Facility matures 364 days from the date of the funding of the Term Loan Facility.facility.
The interest rate for the Term Loan FacilityManagement believes that its refinancing plan is based on either “base rate” or LIBOR, plus an applicable margin in either case.The applicable margin for the Term Loan Facility will be 0% to 0.50% for base rate loans and 0.75% to 1.50% for LIBOR loans, depending on the applicable pricing level in effect.Each of the interest rate spreads will increase by 0.25% at certain time intervals after the funding date. The commitment fee ranges from 0.060% to 0.175% per calendar quarter commencing January 3, 2022, depending on the applicable pricing level in effect. The pricing levels areprobable based on the Company’s seniorability to generate consistent cash flows, its current credit ratings, its relationships with its lenders and its prior history of successfully raising debt ratings. The interest rate is subjectand equity necessary to customary benchmark replacement provisions.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 Credit Agreement contains representations and warranties, affirmative, negative, and financial covenants and events of default substantially similarCompany’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 existing credit facility. Subject to certain exceptions, after the funding date, the Company must make a mandatory prepayment from 100% of the net cash proceeds received by the Company or any offacility could be terminated, and amounts due under its subsidiaries from any debt offerings or equity issuances and/or 100% of the committed amount under any specified acquisition financings.revolver and other borrowing arrangements could be declared immediately due and payable.
LIBOR
Certain rates established at LIBOR are scheduled to be discontinued as a benchmark or reference rate after 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.
25

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  September 30, 2021March 31, 2022

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
September 30, 2021
Three Months Ended
September 30, 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$239 $(56)$183 $289 $(69)$220 Amortization of prior service cost$44 $(11)$33 $240 $(58)$182 
Amortization of net actuarial (gain)/lossAmortization of net actuarial (gain)/loss11,151 (2,677)8,474 9,457 (2,270)7,187 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)(8,394)2,014 (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)1,815 (435)1,380 1,352 (325)1,027 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 1,030 (247)783 Amounts reclassified into net income545 (129)416 544 (131)413 
FSIRS other comprehensive income (loss)FSIRS other comprehensive income (loss)544 (131)413 1,030 (247)783 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 Corporation2,359 (566)1,793 2,382 (572)1,810 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 adjustments(2,056)— (2,056)1,024 — 1,024 Translation adjustments1,247 — 1,247 823 — 823 
Foreign currency other comprehensive income (loss)Foreign currency other comprehensive income (loss)(2,056)— (2,056)1,024 — 1,024 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.$303 $(566)$(263)$3,406 $(572)$2,834 Total other comprehensive income (loss) - Southwest Gas Holdings, Inc.$3,273 $(484)$2,789 $3,181 $(566)$2,615 
Nine Months Ended
September 30, 2021
Nine Months Ended
September 30, 2020
(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:
Amortization of prior service cost$719 $(172)$547 $867 $(208)$659 
Amortization of net actuarial (gain)/loss33,448 (8,028)25,420 28,372 (6,809)21,563 
Regulatory adjustment(28,725)6,894 (21,831)(25,184)6,044 (19,140)
Pension plans other comprehensive income (loss)5,442 (1,306)4,136 4,055 (973)3,082 
FSIRS (designated hedging activities):
Amounts reclassified into net income1,632 (392)1,240 2,703 (649)2,054 
FSIRS other comprehensive income (loss)1,632 (392)1,240 2,703 (649)2,054 
Total other comprehensive income (loss) - Southwest Gas Corporation7,074 (1,698)5,376 6,758 (1,622)5,136 
Foreign currency translation adjustments:
Translation adjustments(324)— (324)(1,187)— (1,187)
Foreign currency other comprehensive income (loss)(324)— (324)(1,187)— (1,187)
Total other comprehensive income (loss) - Southwest Gas Holdings, Inc.$6,750 $(1,698)$5,052 $5,571 $(1,622)$3,949 
26

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONSeptember 30, 2021

Twelve Months Ended
September 30, 2021
Twelve Months Ended
September 30, 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 cost1,007 (241)766 1,185 (284)901 Amortization of prior service cost763 (183)580 1,106 (266)840 
Amortization of net actuarial (gain)/lossAmortization of net actuarial (gain)/loss42,906 (10,298)32,608 34,216 (8,212)26,004 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 adjustment3,894 (935)2,959 27,803 (6,673)21,130 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)(9,732)2,335 (7,397)(9,761)2,344 (7,417)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 income2,176 (523)1,653 3,539 (850)2,689 Amounts reclassified into net income2,175 (520)1,655 2,954 (710)2,244 
FSIRS other comprehensive income (loss)FSIRS other comprehensive income (loss)2,176 (523)1,653 3,539 (850)2,689 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(7,556)1,812 (5,744)(6,222)1,494 (4,728)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 adjustments2,576 — 2,576 (280)— (280)Translation adjustments444 — 444 6,541 — 6,541 
Foreign currency other comprehensive income (loss)Foreign currency other comprehensive income (loss)2,576 — 2,576 (280)— (280)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.$(4,980)$1,812 $(3,168)$(6,502)$1,494 $(5,008)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, 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 $828,000The 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 September 30, 2021, will beMarch 31, 2022, was reclassified into interest expense withinduring the next 6three months (the remainder of the amortization period for the balance) as the related interest payments on long-term debt occur.ended March 31, 2022.

26

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

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 $(46,761)
Translation adjustmentsTranslation adjustments— — — — — — (324)— (324)(324)Translation adjustments— — — — — — 1,247 — 1,247 1,247 
Other comprehensive income (loss) before reclassificationsOther comprehensive income (loss) before reclassifications— — — — — — (324)— (324)(324)Other comprehensive income (loss) before reclassifications— — — — — — 1,247 — 1,247 1,247 
FSIRS amount reclassified from AOCI (1)FSIRS amount reclassified from AOCI (1)— — — 1,632 (392)1,240 — — — 1,240 FSIRS amount reclassified from AOCI (1)— — — 545 (129)416 — — — 416 
Amortization of prior service cost (2)Amortization of prior service cost (2)719 (172)547 — — — — — — 547 Amortization of prior service cost (2)44 (11)33 — — — — — — 33 
Amortization of net actuarial loss (2)Amortization of net actuarial loss (2)33,448 (8,028)25,420 — — — — — — 25,420 Amortization of net actuarial loss (2)8,705 (2,089)6,616 — — — — — — 6,616 
Regulatory adjustment (3)Regulatory adjustment (3)(28,725)6,894 (21,831)— — — — — — (21,831)Regulatory adjustment (3)(7,268)1,745 (5,523)— — — — — — (5,523)
Net current period other comprehensive income (loss) attributable to Southwest Gas Holdings, Inc.Net current period other comprehensive income (loss) attributable to Southwest Gas Holdings, Inc.5,442 (1,306)4,136 1,632 (392)1,240 (324)— (324)5,052 Net current period other comprehensive income (loss) attributable to Southwest Gas Holdings, Inc.1,481 (355)1,126 545 (129)416 1,247 — 1,247 2,789 
Ending Balance AOCI September 30, 2021$(72,278)$17,347 $(54,931)$(1,087)$259 $(828)$(192)$— $(192)$(55,951)
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.
27

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONSeptember 30, 2021

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)— — — 1,632 (392)1,240 1,240 FSIRS amount reclassified from AOCI (5)— — — 545 (129)416 416 
Amortization of prior service cost (6)Amortization of prior service cost (6)719 (172)547 — — — 547 Amortization of prior service cost (6)44 (11)33 — — — 33 
Amortization of net actuarial loss (6)Amortization of net actuarial loss (6)33,448 (8,028)25,420 — — — 25,420 Amortization of net actuarial loss (6)8,705 (2,089)6,616 — — — 6,616 
Regulatory adjustment (7)Regulatory adjustment (7)(28,725)6,894 (21,831)— — — (21,831)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 Corporation5,442 (1,306)4,136 1,632 (392)1,240 5,376 Net current period other comprehensive income attributable to Southwest Gas Corporation1,481 (355)1,126 545 (129)416 1,542 
Ending Balance AOCI September 30, 2021$(72,278)$17,347 $(54,931)$(1,087)$259 $(828)$(55,759)
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.
27

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

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)(Thousands of dollars)September 30, 2021December 31, 2020(Thousands of dollars)March 31, 2022December 31, 2021
Net actuarial lossNet actuarial loss$(469,335)$(502,783)Net actuarial loss$(390,305)$(399,010)
Prior service costPrior service cost(1,768)(2,487)Prior service cost(1,484)(1,528)
Less: amount recognized in regulatory assetsLess: amount recognized in regulatory assets398,825 427,550 Less: amount recognized in regulatory assets332,088 339,356 
Recognized in AOCIRecognized in AOCI$(72,278)$(77,720)Recognized in AOCI$(59,701)$(61,182)
Note 7 – Segment Information
The Company hasAs a result of the MountainWest acquisition on December 31, 2021, management updated its segment reporting from the historical presentation of 2 reportable segments: natural gas operationssegments to 3 reportable segments, with MountainWest presented as the pipeline and utility infrastructure services.storage segment. Southwest has a single reportable segment that is referred to herein ascomprises the natural gas operationsdistribution segment ofand Centuri comprises the Company.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)September 30, 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$15,376 $13,956 Centuri accounts receivable for services provided to Southwest$15,522 $15,166 
UtilityIn 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 distribution, utility infrastructure services, total assets increased significantly since December 31, 2020, primarily due to Centuri’s acquisition of Riggs Distler (see Note 8 - Business Acquisitions),and pipeline and storage segments are as follows:
(Thousands of dollars)September 30, 2021December 31, 2020
Centuri segment assets$2,671,974 $1,475,237 

(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 
28

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  September 30, 2021March 31, 2022

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
(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 related tofor Southwest Gas Holdings, Inc. The financial information pertainingin 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 natural gas operations and utility infrastructure services segments is as follows:
(Thousands of dollars)Natural Gas
Operations
Utility Infrastructure
Services
OtherTotal
Three Months Ended September 30, 2021
Revenues from external customers$255,848 $606,006 $— $861,854 
Intersegment revenues— 26,842 — 26,842 
Total$255,848 $632,848 $— $888,696 
Segment net income (loss)$(27,544)$18,540 $(2,572)$(11,576)
Three Months Ended September 30, 2020
Revenues from external customers$210,834 $548,300 $— $759,134 
Intersegment revenues— 32,092 — 32,092 
Total$210,834 $580,392 $— $791,226 
Segment net income (loss)$(15,973)$34,873 $(627)$18,273 
(Thousands of dollars)Natural Gas
Operations
Utility Infrastructure
Services
OtherTotal
Nine Months Ended September 30, 2021
Revenues from external customers$1,070,576 $1,450,719 $— $2,521,295 
Intersegment revenues— 74,729 — 74,729 
Total$1,070,576 $1,525,448 $— $2,596,024 
Segment net income (loss)$102,584 $32,797 $(4,545)$130,836 
Nine Months Ended September 30, 2020
Revenues from external customers$976,095 $1,306,481 $— $2,282,576 
Intersegment revenues— 102,217 — 102,217 
Total$976,095 $1,408,698 $— $2,384,793 
Segment net income (loss)$79,568 $50,936 $(1,724)$128,780 
(Thousands of dollars)Natural Gas
Operations
Utility Infrastructure
Services
OtherTotal
Twelve Months Ended September 30, 2021
Revenues from external customers$1,445,066 $1,957,667 $— $3,402,733 
Intersegment revenues— 107,371 — 107,371 
Total$1,445,066 $2,065,038 $— $3,510,104 
Segment net income (loss)$182,134 $56,723 $(4,477)$234,380 
Twelve Months Ended September 30, 2020
Revenues from external customers$1,355,666 $1,738,430 $— $3,094,096 
Intersegment revenues— 138,834 — 138,834 
Total$1,355,666 $1,877,264 $— $3,232,930 
Segment net income (loss)$155,993 $66,615 $(2,110)$220,498 
acquisition.

29

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONSeptember 30, 2021

Note 8 - Business Acquisitions
OnIn August 27, 2021, the Company, through its subsidiaries, led principally by Centuri, completed the acquisition of a privately held regional infrastructure services business, Drum, Parent, Inc. (“Drum”), for $830.4 million in cash consideration, and also assumed a long-term financing lease obligation. Drum, andincluding its primary subsidiary, Riggs Distler. In November 2021, certain members of Riggs Distler & Company, Inc. (“Riggs Distler”), are now wholly owned subsidiaries ofmanagement acquired a 1.42% interest in Drum. See the Company.
The acquisition extended the utility services operations in the northeastern region of the U.S. and providesCompany’s 2021 Form 10-K for additional opportunities for expansion of the amount of work Centuri performs for electric and gas utilities. Funding for the acquisition was provided by proceeds from Centuri’s new term loan facility, as described in Note 5 – Debt.
The Company is currently performing a detailed valuation analysis of the assets and liabilities of the acquired company, which was substantially completed during the third quarter of 2021. Certain payments were estimated as of the acquisition date and will be adjusted when paid. The necessary analysis will consider acquired intangibles (including customer relationships, trademarks, and backlog). Based on preliminary results, a substantial portion of the purchase price will be allocated to goodwill and other finite-lived intangible assets.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 those indicated above. The gross contractual receivable is $81 million, exclusivecustomer relationships, trade name, and backlog. Certain payments were estimated as of $12 million representing specific customer accounts thatthe acquisition date and were deemed uncollectible. Of the $12 million, anyadjusted when amounts subsequently collected prior to December 31, 2021 would pass to the sellers.were finalized. Further adjustments may still occur. Due to the estimations made, the final purchase accounting has not yet been completed. Further refinement is expected tocompleted and further refinements may occur, including potential changes to income taxes, fixed assets, and intangibles.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 (in millionsfollows:
(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 dollars):$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.
Cash and cash equivalents$1.9 
Accounts receivable69.1 
Contract assets40.1 
Income taxes receivable, net0.7 
Right of use assets under operating leases1.5 
Prepaid expenses5.2 
Property and equipment118.1 
Intangible assets335.0 
Goodwill446.8 
Total assets acquired1,018.4 
Trade and other payables46.2 
Finance lease obligations27.5 
Contract liabilities12.7 
Operating lease obligations1.5 
Other liabilities5.3 
Deferred tax liabilities94.8 
Total liabilities assumed188.0 
Net assets acquired$830.4 
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 CORPORATION  September 30, 2021March 31, 2022

The amounts allocated to major classespreliminary estimated fair values of intangiblesassets acquired and liabilities assumed as of December 31, 2021, and as updated through March 31, 2022, are as follows:
(Thousands of dollars)Estimated fair ValueEstimated Weighted Average Useful Life in Years
Backlog$5,000 1
Trade names60,000 15
Customer relationships270,000 19
$335,000 
(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 $14$18.5 million for the twelve months ended March 31, 2022, which wereare included in Utility infrastructure services expensesOperations and maintenance expense on the Company’s Condensed Consolidated Statement of Income. Acquisition-relatedNo acquisition-related costs of $13.2 million and $14 million were incurred during the three and nine months ended September 30,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, respectively.to continue certain corporate and administrative functions for the entities acquired while MountainWest is established as an independent enterprise.
The preliminary allocation of
Note 9 - Subsequent Events
On May 6, 2022, the purchase price of Drum was accounted for inCompany 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 applicable accounting guidance. Goodwill consists of the value associated withCooperation Agreement, John P. Hester, the assembled workforce, consolidation of operations,President and the estimated economic value attributable to future opportunities related to the transaction. As the business of Drum was deemed a stock purchase for tax purposes, only pre-acquisition goodwill of $76 million that was historically tax-deductible by Riggs will continue to be deductible for tax purposes by the Company.
The following unaudited pro forma financial information reflects the consolidated results of operationsChief Executive Officer of the Company assumingand Southwest and a member of the acquisition had taken place on January 1, 2020. The most significant pro forma adjustments relate to: (i) reflecting approximately $30 million in transaction costs (incurred by CenturiBoard and Riggs Distler) in the nine months ended September 30, 2020,Southwest Board (the “SWG Board” and, excluding such coststogether with the Board, the “Southwest Boards”), retired as President and Chief Executive Officer of the Company and resigned from the threeSouthwest 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 nine month periods ended September 30, 2021,Chief Executive Officer of Southwest, effective as of May 6, 2022, and (ii) reflecting incremental interest expense relatedas 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 loan facilitydirectors, 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 $7 million and $27 million in the three and nine month periods, respectively, ended September 30, 2021, and approximately $9 million and $24.5 million in the comparable periods in 2020. This information is preliminary in nature and subject to change based upon final purchase price adjustments. Amounts are in thousands of dollars, except per share amounts.
  Three Months Ended
September 30,
Nine Months Ended
September 30,
  2021202020212020
Total operating revenues$956,120 $907,512 $2,903,658 $2,702,062 
Net income (loss) attributable to Southwest Gas Holdings, Inc.$(8,918)$12,688 $120,828 $84,049 
Basic earnings (loss) per share$(0.15)$0.23 $2.06 $1.51 
Diluted earnings (loss) per share$(0.15)$0.23 $2.06 $1.51 
Actual results from operations for Riggs Distler, excluding transaction costs and interest expense on acquisition related debt incurred by Centuri, included in the Consolidated Statements of Income since the date of acquisition are as follows (in thousandsthe Cooperation Agreement, the Board has determined to pursue a spin-off of dollars):
Nine Months Ended
September 30, 2021
Utility infrastructure services revenues$49,520 
Net income attributable to Southwest Gas Holdings, Inc.$1,646 

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 CORPORATION  September 30, 2021March 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.”
In October 2021, theThe Company entered into an agreement forcompleted 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”),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 2,160-milesover 2,000 miles of highly contracted, FERC-regulated interstate natural gas pipelines providing transportation and underground storage services in Utah, Wyoming, and Colorado. The operations to be acquired would further diversify the Company’s business with an expansion of FERC-regulated interstate natural gas pipelines and underground storage services, thereby expanding transportation services into Utah, Wyoming, and Colorado. The Company plans to initially fund this acquisition with a new 364-day term loan, followed by permanent financing. The transaction is expected to be completed near year-end 2021. The acquisition remains subject to certain conditions and approvals, and we can provide no assurances that it will be completed within the anticipated timeline or at all. See Note 1 – Background, Organization, and Summary of Significant Accounting Policies for additional information.
OnIn October 10, 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 4 – Common Stock9 - 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 September 30, 2021,March 31, 2022, Southwest had 2,147,0002,171,000 residential, commercial, industrial, and other natural gas customers, of which 1,146,0001,161,000 customers were located in Arizona, 799,000806,000 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 38,000, compared to 37,000 the same as for the twelve months ended September 2020. In comparison to the September 30, 2020 total of 2,112,000 customers, there was an offsetting decrease related to management’s lifting its moratorium on disconnection of service for non-payment. Southwest implemented the moratorium in March 2020 and also ceased charging late fees due to the COVID-19 pandemic. Southwest recommenced assessing late fees in Nevada and Arizona in April 2021, and expects to recommence late fees in California in the fourth quarter of 2021. The moratorium on disconnections for non-payment was lifted in September 2021 for Arizona and Nevada. The moratorium continues to be in place for California, which is expected to be lifted in the fourth quarter 2021. Residential and small commercial customers represented over 99% of the total customer base. During the twelve months ended September 30, 2021, 53%March 31, 2022, 54% of operating margin (gas operating(Regulated operations revenues less the net cost of gas sold) was earned in Arizona, 35%34% in Nevada, and 12%12% in California. During this same period, Southwest earned 85% of its operating margin from residential and small commercial customers, 4% from other sales customers, and 11% 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 Grossgross margin to
32

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONSeptember 30, 2021

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 6970 primary locations across 4544 states and provinces in the United States (“U.S.”) and Canada. Centuri operates in the U.S., primarily as NPL, Neuco, Linetec, and Riggs Distler, Inc. (“Riggs Distler”), and in Canada, primarily as NPL Canada. In June 2021, Centuri entered into an agreement for the acquisition of Drum Parent, Inc. (“Drum”) and its U.S. operations, consisting principally of the utility infrastructure services operations of Drum’s primary subsidiary, Riggs Distler, serving utility customers in the Northeast and Mid-Atlantic regions. The transaction was completed in August 2021. Information surrounding this acquisition can be found in Note 8 - Business Acquisitions.
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, the level of commerce/employment, as well as impacts from new virus variants on these economies. 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 or restrictions 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 some offices (including corporate headquarters) continue to work from home on a temporary basis; Southwest has introduced plans for employees to begin returning to the office environment at the safest, most appropriate time, which is currently anticipated in the first quarter of 2022, while Centuri employees have resumed work in the office. At the same time, management is also focused on the need for adaptability in an environment of virus variants and governmental actions related thereto. Both segments continueCompany continues to facilitate administration, communication, and all critical functions, supported by deployed technology whenever employees are working remotely.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 had a moratorium on natural gas disconnections for non-payment that was lifted in our Nevada and Arizona jurisdictions in the third quarter of 2021, with the expectation to lift the moratorium in California in the fourth quarter of 2021. Southwest 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 timing of fulfillment by Centuri of its contractual obligations.
33

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONSeptember 30, 2021

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 and its variants. Managementdevelopments; however, management does not currently expect the impact of these conditionsimpacts to be material to the Company’s liquidity or financial position overall; 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, nine, and twelve months ended September 30, 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 September 30, 2021, including those resulting from COVID-19, will be reflected in management’s estimates for future periods.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.
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 items 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 74% 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 September 30,
 Three MonthsNine MonthsTwelve Months
(In thousands, except per share amounts)202120202021202020212020
Contribution to net income
Natural gas operations$(27,544)$(15,973)$102,584 $79,568 $182,134 $155,993 
Utility infrastructure services18,540 34,873 32,797 50,936 56,723 66,615 
Corporate and administrative(2,572)(627)(4,545)(1,724)(4,477)(2,110)
Net income (loss)$(11,576)$18,273 $130,836 $128,780 $234,380 $220,498 
Weighted average common shares59,688 56,271 58,639 55,683 58,209 55,508 
Basic earnings (loss) per share
Consolidated$(0.19)$0.32 $2.23 $2.31 $4.03 $3.97 
Natural Gas Operations
Reconciliation of Gross Margin to Operating Margin (Non-GAAP measure)
Utility Gross Margin$62,681 $57,188 $392,190 $354,854 $566,065 $524,010 
Plus:
Operations and maintenance (excluding Admin. & General) expense68,098 61,383 194,471 182,761 255,434 244,573 
Depreciation and amortization expense61,359 55,942 187,688 173,865 249,118 230,158 
Operating margin$192,138 $174,513 $774,349 $711,480 $1,070,617 $998,741 


34

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  September 30, 2021March 31, 2022

3rd
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 and are covered in greater detail in later sections of MD&A.
Summary Operating Results
 Period Ended March 31,
 Three MonthsTwelve Months
(In thousands, except per share amounts)2022202120222021
Contribution to net income
Natural gas distribution$111,795 $118,715 $180,215 $194,234 
Utility infrastructure services(23,486)(859)17,793 84,207 
Pipeline and storage16,930 — 16,930 — 
Corporate and administrative(9,061)(563)(35,274)(1,366)
Net income$96,178 $117,293 $179,664 $277,075 
Weighted average common shares60,737 57,600 59,919 56,564 
Basic earnings per share
Consolidated$1.58 $2.04 $3.00 $4.90 
Natural Gas Distribution
Reconciliation of Gross Margin to Operating Margin (Non-GAAP measure)
Utility Gross Margin$233,882 $233,156 $571,051 $546,171 
Plus:
Operations and maintenance (excluding Admin. & General) expense73,422 64,057 276,525 246,214 
Depreciation and amortization expense72,114 68,698 256,814 239,268 
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
37,000Issued 6,325,000 shares of common stock, raising $452 million in net proceeds
Corporate 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 occurred over the past 12 months
Operating margin increased $18 $14 million
Issued $300$600 million in 3.18% 30-year4.05% 10-year Notes
Nevada general rate case finalized with rate relief effective April 2022
Utility infrastructure services highlights include the following:
Utility infrastructure servicesRecord revenues increased $52of $524 million in the first quarter of 2022, an increase of $160 million, or 9%
44%, coCompletedmpared to the acquisitionfirst quarter of Riggs Distler for $830 million in August 2021
$13 million of acquisition costs incurredResults impacted by inflationary pressures and incremental interest and amortization associated with Riggs Distler
AmendedPipeline and restated credit agreement in connection with the Riggs Distler acquisition; $1.145 billion secured term loan facility and $400 million secured revolving credit facility

Southwest Gas Holdingsstorage highlights include the following:
Announced planned acquisitionRecognized revenue of Questar Pipelines for $1.545 billion in cash (subject to certain adjustments) and assumption of approximately $430$67 million of existing long-term debt
Authorized a preferred stock purchase right for each outstanding common share
Contributed $17 million to consolidated net income, which is net of Amended$8.7 million of one-time stand-up and Restated Bylaws



integration costs
35

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  September 30, 2021March 31, 2022

Results of Natural Gas OperationsDistribution
Quarterly Analysis
Three Months Ended
September 30,
Three Months Ended
March 31,
(Thousands of dollars)(Thousands of dollars)20212020(Thousands of dollars)20222021
Gas operating revenues$255,848 $210,834 
Regulated operations revenuesRegulated operations revenues$676,539 $521,932 
Net cost of gas soldNet cost of gas sold63,710 36,321 Net cost of gas sold297,121 156,021 
Operating marginOperating margin192,138 174,513 Operating margin379,418 365,911 
Operations and maintenance expenseOperations and maintenance expense119,708 101,159 Operations and maintenance expense119,636 106,135 
Depreciation and amortizationDepreciation and amortization61,359 55,942 Depreciation and amortization72,114 68,698 
Taxes other than income taxesTaxes other than income taxes20,109 15,787 Taxes other than income taxes21,652 20,687 
Operating income (loss)(9,038)1,625 
Operating incomeOperating income166,016 170,391 
Other income (deductions)Other income (deductions)(4,287)1,751 Other income (deductions)1,315 550 
Net interest deductionsNet interest deductions24,922 26,103 Net interest deductions26,610 22,166 
Loss before income taxes(38,247)(22,727)
Income tax benefit(10,703)(6,754)
Contribution to consolidated results$(27,544)$(15,973)
Income before income taxesIncome before income taxes140,721 148,775 
Income tax expenseIncome tax expense28,926 30,060 
Contribution to consolidated net incomeContribution to consolidated net income$111,795 $118,715 
Contribution from natural gas operationsdistribution operations decreased $11.6$6.9 million betwebetween the thirdfirst quarters of 20212022 and 2020.2021. The decline was primarily due to an increase in Operations and maintenance expense, higher Depreciation and amortization, and a decreasean increase in Other income,Net interest deductions, partially offset by an increase in Operating margin.
Operating margin increased $18 million.$14 million quarter over quarter. Approximately $2$7 million of incremental margin was attributable to customer growth fromincluding 37,00038,000 first-time meter sets during the last twelve months. Rate relief in Arizona, Nevada, and California added $13$1 million of margin. Also contributing to the increase were customer late fees that were $1.5$2.8 million greater in the current quarter due to the lifting of the moratorium in 2021 on such fees in Arizona, Nevada, and Nevada that had beenCalifornia. The moratorium was previously in place sincebeginning in March 2020. 2020 to provide temporary relief to customers during the COVID-19 pandemic. Amounts collected from and returned to 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 quarters.
Operations and maintenance expenseexpense increased $18.5$13.5 million between quarters reflecting a $5 million legal reserve (as described in betNote 1 – Background, Organization, and Summary of Significant Accounting Policies), a $1.7 million increaseween quarters. In addition to general 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 $2.2$3.5 million of incremental temporary staffing,specifically related to customer service, system support, and billing. Other increases included employee and benefit-related costs ($1.2 million) and increased general business insurance ($800,000). The prior year period expense levels included more modest expense levels overall due to COVID-environment reduced training, and stabilization costs associated with a new customer information system implemented in May 2021. In addition, the timing of vacation, other time-off, and miscellaneous employee benefits resulted in an increase of $2.5 million when compared to the COVID-impacted third quarter of 2020. Increased expenditures for pipeline damage prevention programs, higher travel and training costs, and general cost increases were also recognized in the current quarter.related amounts.
Depreciation and amortization expenseexpense increased $5.4$3.4 million, or 10%5%, betweenbetween quarters, primarily due to a $574$564 million,, or 7%, increase in average gas plant in service compared to the corresponding quarter a year ago, includingago. Offsetting the replacement of the customer information system, which occurred in May 2021. Software/systems have shorter useful lives than pipeline assets. Amortizationincrease, amortization related to regulatory account recoveries increaseddecreased approximately $1.5 million$700,000 between quarters, andwhich is also reflected as an increase in Operating margin above. TheThe increase in plant was attributable to pipeline capacity reinforcement work, franchise requirements, scheduled pipe replacement activities, and new infrastructure.
Taxes other than income taxesOther income increased $4 million between quarters primarily due to an increase in Arizona property taxes.
Other incom$765,000e decreased $6 million, including a decline in income from COLI policies.. The current quarter reflects no changea $2 million decline in COLI policy cash surrender values, while the prior-year quarter reflected a $4.5$2.7 million increase. These fluctuations primarily result from changes in the portion of the cash surrender values that are associated with equity securities, and are directionally consistent with the broader securities markets. Amounts associated with the allowance for funds used during construction (“AFUDC”) decreased $1.2 million in the current quarter compared to the prior year quarter due to an update to the assumptions related to the impact short-term borrowings have on AFUDC. Partially offsetting these combined impacts is aThis decrease in thewas 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 was recognized on the sale of non-regulated property in the first quarter of 2022.
Net interest deductions decreased $1increased $4.4 million in the thirdfirst quarter of 2021,2022, as compared to the prior-year quarter, primarily due
related to a decreaselower interest in the amortization ofprior-year quarter, as a carrying amount related to an interest-related regulatory balance in Arizona.annual excess accumulated deferred tax
36

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  September 30, 2021March 31, 2022

(“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 OperationsDistribution
Nine-MonthTwelve-Month Analysis

Nine Months Ended
September 30,
Twelve Months Ended March 31,
(Thousands of dollars)(Thousands of dollars)20212020(Thousands of dollars)20222021
Gas operating revenues$1,070,576 $976,095 
Regulated operations revenuesRegulated operations revenues$1,676,397 $1,369,690 
Net cost of gas soldNet cost of gas sold296,227 264,615 Net cost of gas sold572,007 338,037 
Operating marginOperating margin774,349 711,480 Operating margin1,104,390 1,031,653 
Operations and maintenance expenseOperations and maintenance expense328,980 303,567 Operations and maintenance expense452,051 409,429 
Depreciation and amortizationDepreciation and amortization187,688 173,865 Depreciation and amortization256,814 239,268 
Taxes other than income taxesTaxes other than income taxes60,134 47,507 Taxes other than income taxes81,308 67,769 
Operating incomeOperating income197,547 186,541 Operating income314,217 315,187 
Other income (deductions)Other income (deductions)(4,902)(10,947)Other income (deductions)(3,794)14,496 
Net interest deductionsNet interest deductions71,263 75,152 Net interest deductions102,004 98,256 
Income before income taxesIncome before income taxes121,382 100,442 Income before income taxes208,419 231,427 
Income tax expenseIncome tax expense18,798 20,874 Income tax expense28,204 37,193 
Contribution to consolidated net incomeContribution to consolidated net income$102,584 $79,568 Contribution to consolidated net income$180,215 $194,234 
CContribontributionution to consolidated net income from natural gas distribution operations to consolidated net income increased $23decreased $14 million between the first nine months of 2021twelve-month periods ended March 2022 and 2020.2021. The increasedecline was due primarily due to an improvement in Operating margin and Other income (deductions) and a decline in Net interest deductions, offset by increases in Depreciation and amortization, Operations and maintenance expense, Depreciation and amortization, and Taxes other than income taxes.taxes, and a decrease in Other income (deductions), offset by an increase in Operating margin.
Operating margiman rgin increased $73 millionincreased $62.9 between periods. Customer growth provided $14 million, including $10and combined rate relief provided $44 million attributable to customer growth. Rate relief contributed an additional $46 million inof incremental operating margin. LateAlso contributing to the increase were customer late fees also increased (approximately $725,000), asthat were $8 million greater in the current period due to lifting the moratorium dueon such fees in all jurisdictions, which was initially instituted in March 2020 to COVID was liftedprovide temporary relief to customers during the pandemic. Additionally, regulatory account balance returns and charges re-commenced, as described earlier. Residual impacts include those relatedrecoveries 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 regulatory mechanisms, including recovery/return of regulatory program balances (primarily offset in amortization expense), in addition to margin from customers outside the decoupling mechanisms.variance between periods.
Operations and maintenance expense expense increased $25.4$43 million, or 8%10%, between periods, includingperiods. 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 the third quarterNote 1 – Background, Organization, and Summary of 2021Significant Accounting Policies), higher levels of service-related pension costs ($6.1 million), customer service, system support, and a $5 million increase in the service-related component of pension cost. Other increases includebilling costs ($7.9 million), increased expenditures for pipeline integrity management and damage prevention programs associated with a growing infrastructure($4 million) and customer base,general business insurance ($2.7 million), as well as increased medical and increases in customer service-relatedother employee benefit costs. Prior year expense levels were uncharacteristically low due to COVID-period reduced training/travel and information technology costs.other cost savings.
Depreciation and amortization expenseexpense increased $13.8 million, or 8%, between periods primarily due to a $557$17.5 million, or 7%, between periods primarily due to a $562 million, or 7%, increase in average gas plant in service between periods.since the corresponding period in the prior year. The increase in gas plant was attributableattributable to pipeline capacity reinforcement work, franchise requirements, scheduled pipe replacement activities, and new infrastructure, as well as the implementation of thea new customer information system placed into production in Maythe second quarter of 2021. Recoveries associated withAmortization of regulatory programaccount balances as noted above, resultedimpacted expense in a $3 million increaseboth periods, which is offset in amortization expense compared to the first nine months of 2020.Operating margin above.
Taxes other than income taxes increased $12.6$13.5 million between periods primarily due to an increase in property taxes in Arizona, and to a lesser extent, in the California and Nevada jurisdictions.
Other income (deductions) improved $6 million overall between periods. The current period reflects $5.8 million in income from the combined effects of an increase in COLIcome 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 recognizednet death benefits wrecognized, compared to the twelve months ended March 31, 2021 which reflected hile the prior-year period reflected $1an exceptionally large increase in values of $27.4 million in COLI-related income. The non-service cost components(including $3.7 million of employee pension and other postretirement benefit costs were $4.5 million lower between periods. Lowernet death benefits). Additionally, equity AFUDC partially offset the improvements in the current period.
Net interest deductions decreased $3.9was lower by $5.6 million, between periods primarily due to amortization of an interest-related regulatory balance in Arizona.
The income tax amount in both quarters includes the amortization of Excess Accumulated Deferred Income Tax (“EADIT”) balances and the impacts of COLI cash surrender value increases, which are recognized without tax consequences.impact short-term borrowings have
37

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  September 30, 2021March 31, 2022

Results of Natural Gas Operations
Twelve-Month Analysis
Twelve Months Ended September 30,
(Thousands of dollars)20212020
Gas operating revenues$1,445,066 $1,355,666 
Net cost of gas sold374,449 356,925 
Operating margin1,070,617 998,741 
Operations and maintenance expense431,795 406,169 
Depreciation and amortization249,118 230,158 
Taxes other than income taxes76,087 63,195 
Operating income313,617 299,219 
Other income (deductions)(545)(7,615)
Net interest deductions97,259 100,115 
Income before income taxes215,813 191,489 
Income tax expense33,679 35,496 
Contribution to consolidated net income$182,134 $155,993 
Contribution to consolidated net income from natural gas operations increased $26 million between the twelve-month periods ended September 2021 and 2020. The increase was due primarily to an increase in Operating margin and Other income, offset by increases in Operations and maintenance expense, Depreciation and amortization, and Taxes other than income taxes.
Operating margin increased $72 million between periods. Customer growth provided $13 million, and combined rate relief provided $52 million of incremental operating margin.on AFUDC rates. Offsetting these impacts was a reduction in late fees ($817,000) due to the pandemic-period moratorium on these fees from March 2020 through March 2021 (resuming in Arizona and Nevada in April 2021). Regulatory account balance return/recoveries impacted both periods, in addition to margin from customers outside the decoupling mechanisms.
Operations and maintenance wereexpense increased $26 million, or 6%, between periods primarily due to higher legal-claim related costs as noted earlier, higher levels of service-related pension costs ($7.3 million), expenditures for pipeline damage prevention programs associated with a growing infrastructure and customer base, increased customer-related and information technology costs, and higher reserves for customer accounts deemed uncollectible.
Depreciation and amortization expense increased $19 million, or 8%, between periods primarily due to a $579 million, or 7%, increase in average gas plant in service since the corresponding period in the prior year and due to a $3.8 million increase in regulatory account amortization.
Taxes other than income taxes increased $12.9 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 $7.1 million between the twelve-month periods of 2021 and 2020, primarily due to a current-period $14 million increase in COLI policy cash surrender values and recognized death benefits, compared to the twelve months ended September 30, 2020, which reflected a $7.2 million increase. The non-service cost components of employee pension and other postretirement benefit costs were $3.3which were $7.8 million lower between periods, and interest income which was offset by lower equity AFUDC.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 decreased $2.9deductions increased $3.7 million between periods primarily due to decreasesincreased 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 an interest-related regulatory balanceEADIT ($5 million), and to a lesser extent, changes in Arizona.
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,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 reflectsincluded 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 amortizationfirst quarter of EADIT balances.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 CORPORATION  September 30, 2021March 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
QuarterlyTwelve-Month Analysis
Three Months Ended
September 30,
Twelve Months Ended March 31,
(Thousands of dollars)(Thousands of dollars)20212020(Thousands of dollars)20222021
Utility infrastructure services revenuesUtility infrastructure services revenues$632,848 $580,392 Utility infrastructure services revenues$2,318,563 $1,978,770 
Operating expenses:Operating expenses:Operating expenses:
Utility infrastructure services expensesUtility infrastructure services expenses567,270 502,951 Utility infrastructure services expenses2,123,085 1,745,729 
Depreciation and amortizationDepreciation and amortization30,021 24,197 Depreciation and amortization130,511 98,548 
Operating incomeOperating income35,557 53,244 Operating income64,967 134,493 
Other income (deductions)Other income (deductions)1,175 48 Other income (deductions)683 (67)
Net interest deductionsNet interest deductions6,257 2,000 Net interest deductions30,5087,992 
Income before income taxesIncome before income taxes30,475 51,292 Income before income taxes35,142 126,434 
Income tax expenseIncome tax expense9,653 13,629 Income tax expense11,40634,477 
Net incomeNet income20,822 37,663 Net income23,736 91,957 
Net income attributable to noncontrolling interest2,282 2,790 
Contribution to consolidated results attributable to Centuri$18,540 $34,873 
Net income attributable to noncontrolling interestsNet income attributable to noncontrolling interests5,9437,750 
Contribution to consolidated net income attributable to CenturiContribution to consolidated net income attributable to Centuri$17,793 $84,207 
Utility infrastructure services revenuesrevenues increased $52.5$339.8 million, or 17%, in the third quartercurrent 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 quarter, including $49.5prior year, of which $175.5 million from was recorded by Riggs Distler subsequent toDistler. Included in the August 27, 2021 acquisition date. Revenues specific toincremental electric infrastructure services work increased $40.1 million inrevenues during the third quartertwelve-month period of 2021 when compared to the prior-year quarter, of which $34.1 million related to Riggs Distler. Included in electric services revenues overall2022 was $45.7$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 $48.7$90.5 million in similar services during the third quarter of the prior yeartwelve-month period in regard2021. The remaining increase in revenue was attributable to Linetec. Storm restoration work typically generates a higher profit margin than corecontinued growth with existing gas infrastructure services, due to improved operating efficiencies related to equipment utilizationcustomers under master service and absorption of fixed costs. Partially offsetting the improved revenues overall wasbid agreements, partially offset by reduced work with two significant gas infrastructure services customers during the third quarter of 20212022 twelve-month period (totaling $17.1$60.6 million), due to timing andthe mix of projects under each customer’s multi-year capital spending programs.
Utility infrastructure services expensesexpenses increased $64.3$377.4 million, (including $13or 22%, between periods (including $14 million of professional fees related to the acquisition of Riggs Distler) in the third quarter of 2021, compared to the prior-year quarter, and also included $42.4. The increase overall includes $249 million in expenses (including storm-related) recordedincurred by Riggs Distler subsequent to the acquisition, as well as other incremental costs related to electric infrastructure services (inclusive of storm-related work)work and costs necessary for the completion of additional gas infrastructure work. Higher fuel costs, and equipment rental expense, and subcontractor expenses were also incurred due to the mix of work and in support of growth in our electric infrastructure business. IncludedExpenses 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 $18$26.5 million between comparative periods, including $13the noted $14 million of acquisition-related professional fees and an additional $13.3 million of professional fees previously noted, $3 million of othergeneral and administrative costs incurred by Riggs Distler subsequent to the acquisition, and otheracquisition. Other administrative costs resulting from generalincreased due to the growth in the business. The reduction in revenues with two large customers,Gains on sale of equipment (reflected as noted earlier, resulted in an unfavorable impact on profit margins duringoffset to Utility infrastructure services expenses) were approximately $5.8 million and $3.3 million for the third quartertwelve-month periods of 2022 and 2021, due to reduced operating efficiencies from equipment and facility utilization and under-absorption of other fixed costs.
Other income increased $1.1 million between quarters attributable to proceeds from life insurance policies of $1.7 million, partially offset by $700,000 of unamortized loan fees that were expensed in connection with Centuri’s debt refinancing.respectively.
Depreciation and amortization eexpensexp increased $32 million bense increased $5.8 million between quarters,etween the current and prior-year twelve-month periods, of which $4.7$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.
The increase in Net interest deductions of $4.3 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.
Income tax expense decreased $4 million between quarters, primarily due to reduced profitability in 2021. Certain costs related to the Riggs Distler acquisition were non-deductible for U.S. federal income tax purposes, impacting the recorded Income tax expense during the third quarter of 2021.
39

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONSeptember 30, 2021

Results of Utility Infrastructure Services
Nine-Month Analysis
Nine Months Ended
September 30,
(Thousands of dollars)20212020
Utility infrastructure services revenues$1,525,448 $1,408,698 
Operating expenses:
Utility infrastructure services expenses1,381,524 1,252,489 
Depreciation and amortization79,982 71,144 
Operating income63,942 85,065 
Other income (deductions)927 (107)
Net interest deductions9,511 7,138 
Income before income taxes55,358 77,820 
Income tax expense17,372 21,715 
Net income37,986 56,105 
Net income attributable to noncontrolling interest5,189 5,169 
Contribution to consolidated net income attributable to Centuri$32,797 $50,936 
Utility infrastructure services revenues increased $116.8 million in the first nine months of 2021 when compared to the same period in the prior year primarily due to incremental electric infrastructure revenues of $64.1 million. Included in the incremental electric infrastructure revenues during the first nine months of 2021 was $57.9 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., compared to $55.9 million in the first nine months of the prior year in regard to Linetec. The remaining increase in revenues was attributable to increased work under existing master service agreements and bid projects for gas infrastructure services in the central and eastern U.S. regions and Canada, partially offset by reduced work with two significant customers ($61.1 million) during the first nine months of 2021, due to the timing and mix of projects under each customer’s multi-year capital spending programs.
Utility infrastructure services expenses increased $129 million (including $14 million of acquisition costs) in the first nine months of 2021 as compared to the same period in 2020, primarily due to costs to complete additional electric and gas infrastructure work. Operating efficiencies during the first nine months of 2021 from favorable weather conditions were offset by higher fuel, equipment rental, payroll, and subcontractor costs caused by changes in the mix of work and continued growth in our electric infrastructure business. The significant reduction in revenues with two large customers noted above, resulted in an unfavorable impact on profit margins during the first nine months of 2021, due to reduced operating efficiencies from equipment and facility utilization and under-absorption of other fixed costs. Centuri recognized $2.5 million in wage and rent subsidies from the Canadian government amidst the COVID-19 environment during 2021, compared to $4.1 million in the prior nine-month period, in each case, recorded as a reduction in Utility infrastructure services expense. Included in total Utility infrastructure services expenses were general and administrative costs, which increased $21.9 million in 2021 compared to 2020, associated with growth of the business (including $14 million of professional fees related to the acquisition of Riggs Distler and $3 million of administrative costs incurred by Riggs Distler subsequent to the acquisition). Gains on sale of equipment (reflected as an offset to Utility infrastructure services expenses) were approximately $5.4 million and $600,000 in the nine-month periods in 2021 and 2020, respectively.
Depreciation and amortization expense increased approximately $8.8 million between periods, of which $4.7 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.
The increase in Net interest deductions of $2.4 million was due to incremental interest from outstanding borrowings under Centuri’s $1.545 billion amended and restated secured revolving credit and term loan facility discussed earlier, partially offset by lower interest from lower borrowings in 2021 compared to 2020 on Centuri’s facility prior to the 2021 refinancing.
Income tax expense in 2021 was impacted by the combined effects of reduced profitability and certain non-deductible costs related to the Riggs Distler acquisition in 2021.
40

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONSeptember 30, 2021

Results of Utility Infrastructure Services
Twelve-Month Analysis
Twelve Months Ended September 30,
(Thousands of dollars)20212020
Utility infrastructure services revenues$2,065,038 $1,877,264 
Operating expenses:
Utility infrastructure services expenses1,858,464 1,671,478 
Depreciation and amortization105,570 94,837 
Operating income101,004 110,949 
Other income (deductions)827 (210)
Net interest deductions11,64210,710 
Income before income taxes90,189 100,029 
Income tax expense26,78528,057 
Net income63,404 71,972 
Net income attributable to noncontrolling interest6,6815,357 
Contribution to consolidated net income attributable to Centuri$56,723 $66,615 
Utility infrastructure services revenues increased $187.8 million, or 10%, in the current twelve-month period compared to the corresponding period of 2020, primarily due to incremental electric infrastructure revenues of $129.5 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 $83.5 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., compared to $55.9 million in the twelve-month period of the prior year. 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 $187 million (including $14 million of acquisition costs) between periods, largely due to incremental costs related to electric infrastructure work, including costs associated with storm restoration work overall and other costs incurred by Riggs Distler following its acquisition in August 2021, as well as costs necessary for the completion of additional gas infrastructure work. 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. Also included in Utility infrastructure services expenses were general and administrative costs, which increased $30.5 million during the twelve-month period in 2021 when compared to 2020, due to $14 million in professional fees incurred related to Centuri’s acquisition of Riggs Distler, $3 million of costs incurred by Riggs Distler subsequent to the acquisition, higher payroll and operating costs associated with continued growth of the business, and higher profit-based incentive compensation. 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 approximately $6.6 million and $2.9 million for the twelve-month periods in 2021 and 2020, respectively.
Depreciation and amortization expense increased $10.7 million between the current and prior-year twelve-month periods. The increase was primarily attributable to incremental costs related to electric infrastructure depreciation of $6.3 million, including $4.7 million from Riggs Distler. The remaining increase is attributable to equipment and computer systems implemented to support the growing volume of work being performed.
The increase in Net interest deductions of $932,000 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 that was entered into during August 2021 in conjunction with the acquisition of Riggs Distler. This increase was partially offset by lower interest associated with reduced borrowings in 2021, compared to the same period of 2020, under Centuri’s credit facility existing prior to the 2021 refinancing.

41

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  September 30, 2021March 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), 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 later updated its request multiple times, in order to reflect the actual amortization of 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, and to reflect certain other 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 including continuing the COYL program; establishing 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; including a 10-year amortization of EADIT associated with deemed “unprotected” plant; addressing other aspects regarding EADIT; incorporating various tariff proposals; and incorporating other ratemaking adjustments. 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 the legal briefing process, the updated proposal reflected a request to increase rates by $80.7 million.
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 increaserates the substantial capital investments that have been made since the end of $36.8the test 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 and the continuation of both full revenue decoupling and the COYL program. The overall increase reflects the inclusion of six months (as compared to eleven months previously contemplated) of post-test year plant additions. An ROE of 9.1% was approved with a capital structure comprised of 48.9% long-term debt and 51.1% common equity. See additional discussion related to the outstanding deferral
40

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

balance associated with the LNG facility in addition to the COYL and VSP programs below. The continuation of the property tax tracker was supported(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 conducted a workshop in May 2021 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. Inreporting period. An April 2020, Southwest filed to adjust the existing2022 filing proposes a rate to consider, instead,return $10.5 million, the modestover-collected balance existing at the end of February 2020. Ultimately, the ACC elected to set the rate to zero in an effort to provide some measure of customer relief in light of the COVID-19 pandemic, and at the time of both the April filing and the ACC decision, the balance was a liability (in an over-recovered status). For 2021, once again, the balance at the end of the preceding calendar year was a modest positive balance, but in an over-collected status by the time rates would be requested to be re-set. Therefore, the zero rate will be maintained until the next annual filing date.first quarter 2022.
LNGTax Reform.In 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 its inaugural TEAM rate application for the recovery of approximately $4.3 million associated with the mechanism. The commission staff is expected to issue its report on the filing in the secondquarter of 2022 for ACC consideration at a subsequent open meeting.
Liquefied 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 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 approved and considered and
42

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONSeptember 30, 2021

approved as part of Southwest’s recently approvedprevious general rate case. Approximately $12 million in costs, incurred following the in-service date of the facility and after the period considered as part of the recently concludedprevious general rate case, were deferred in the previously authorized regulatory asset account and will beare included for consideration in the next Arizonacurrent 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. In 2014, the ACC approved “Phase II” of the COYL program, which included the replacement of non-leaking COYLs. Annual surcharges are designed to collect the revenue requirement associated with the program. In a February 2019 filing, Southwest requested to increase its surcharge 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. As indicated earlier, parties to the rate case stipulated to continue the COYL program and recommended recovery of certain plant as part of a post-test year plant adjustment, with inclusion of related amounts in base rates. The ACC final 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 May 2021 proposed the recovery of the remainingpreviously unrecovered surcharge revenue from 2019 and 2020 revenue requirement associated with prior COYL program activity. The filing proposed the associated revenue requirement (approximately(collectively, $13.7 million) be recovered over one year.a one-year period. In November 2021, the ACC approved full recovery overwithin the proposed one-year timeline, with the associated rate expected to befor which was implemented during thatthe same month.
VSP Program. As part of In a settlement agreement from its 2016 Arizona general rate case, Southwest received approval to implement a VSP replacement program. 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 2019,2022 filing, Southwest requested to increase its surcharge revenue by $9.5$3.4 million (to $11.9 million)to recover the revenue requirement associated with theprevious investments made since August 2020 and through calendar year 2021, with a proposed rate implementation of June 2022.
Vintage 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 approximately $100 millionpre-1970s vintage steel pipe in 2018 VSP capital projects. The ACC’s October 2019 Order authorizing Southwest to retain the existing annual surcharge indicated the program would be subject to reviewArizona. However, as part of the generalSouthwest’s most recent rate case. As noted above, thecase decision in the most recent general rate case provided for a post-test year plant adjustment period of six months (including for VSP). However,2020, the ACC ultimately decided to discontinue the accelerated VSP program at this time.program. A filing in May 2021 proposed the recovery of the otherwisepreviously unrecovered surcharge revenue requirement (associated with years 2019 through 2022), relatedrelating to VSP plant investmentinvestments during 2019 and 2020, which was not included as part of the recently concluded rate case. The filing proposed the associated revenue requirement (approximatelywith approximately $60 million)million to be recovered over a three-year period. In November 2021, the ACC approved full recovery over the proposed three-year timeline, electing to permit the recovery rate to beupdated rates for which were implemented in March 2022.
Customer Data Modernization Initiative. Southwest embarked on an initiative to replace its customer information system and gas transaction systems, each to be utilized to support all Southwest service territories. Combined, these undertakings were referred to as the Customer Data Modernization Initiative (the “CDMI”). In March 2019, Southwest filed an application with the ACC seeking an accounting order to track and defer all costs associated with the CDMI to mitigate adverse financial implications associated with this multi-year initiative. The ACC issued a decision in this matter in early April 2021 denying Southwest’s request for a regulatory asset, indicating that the requested recovery mechanism was not warranted, and that Southwest could, instead, seek to recover the costs as part of a future rate case. The total CDMI costs were estimated at approximately $174 million, of which $96 million would be allocable to the Arizona rate jurisdiction. The customer information system was placed in service in May 2021.
Graham County Utilities. In April 2021, Southwest and Graham County Utilities, Inc. (“GCU”) filed a joint application with the ACC for approval to transfer assets of GCU to Southwest and extend Southwest’s Certificate of Public Convenience and Necessity to serve the more than 5,000 associated customers.customers, for a purchase price of $3.5 million. Approval of the application would provide forby 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 effective date of rates resulting from the natural gas system of GCU to Southwest for the purchase price of $3.5 million and the addition of more than 5,000 customers. A decision is expected in the fourth quarter of 2021. currently pending Arizona general rate 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 with a 10% return on common equity, relative to a 52% equity ratio. Approximately $4 million of $12.8 millionthe original proposed increase was net of a $10.9 million revenue reduction associated with changes from U.S. tax reform. The overall revenue request also included $1.6 million of EADIT proposed to be returned to customersa North Lake
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SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  September 30, 2021March 31, 2022

each year until the amount is reset again later as part of a future rate case. Southwest’s proposal included an ROE of 10.5% relative to a 53% equity ratio; continuation of annual post-test year margin adjustments of 2.75%; implementation of various safety-related programs, including a targeted pipe replacement program and a meter 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, which was unanimously approved by the CPUC 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 was associated with a North Lake Tahoe project that would not ultimately be completed by the beginning of 2021; consequently, the parties agreed to provide for recovery of the cost of service impacts of the project through a future surcharge. The rate case decision 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 $5.00 to $5.75 per month.account. It also includes cumulative expenditures 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 impacts related to the delay in the implementation of new rates for purposes of later recovery. New rates were ultimately implemented April 1, 2021.
Attrition Filing. Following the 2021 implementation of new rates approved as part of the recently concluded general rate case, Southwest is also authorized to implement annual PTY attrition increases of 2.75% starting, the first annual adjustment of which began in January 2022.
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, which has continued in the current year. 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.
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 allowed 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 was transferred to the two-way balancing account in July 2020. A rate to begin recovering the balance accumulated through June 30, 2020 was established and made effective September 1, 2020, and updated in January 2021, August 2021, and updated further in August 2021.January 2022. This rate is expected to be updated at least annually. As noted earlier, the customer information system, the largest of the two systems associated with the CDMI, was placed in service in May 2021.
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 customer protections under Emergency Relief regulations implementedthe application. Southwest anticipates a decision in California in 2019 (in the event 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 accounts to track the financial impacts of complying with the resolution. On May 1, 2020, Southwest requested to establish a COVID-19 Pandemic Protections Memorandum Account (“CPPMA”) to record incremental costs and lost revenues incurred by Southwest associated with its implementation of the protections outlined in the CPUC resolution. The protections were retroactively applied to March 4, 2020, the date Governor Gavin Newsom declared a state of emergency2023.
44

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONSeptember 30, 2021

related to COVID-19. The CPPMA was originally effective March 4, 2020 through April 16, 2021, but was extended through September 30, 2021. These customer protections focus on flexible payment plan options, additional protections for income-qualified customers, as well as the suspension of disconnections for non-payment and waiver of deposit and late fee requirements. Tracked amounts will be considered by the CPUC for future recovery.
Nevada Jurisdiction
Nevada General Rate Case.Case In June 2021, Southwest filed a Notice of Intent to file a general rate case, and on. On August 31, 2021, Southwest filed its most recent general rate case, which proposeswas further updated by a certification filing on December 17, 2021. The request proposed a combined revenue increase of approximately $30.5 million. This$28.7 million (as of certification); the most significant driver for the new request also proposesis 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 information system that was implemented in May 2021. The filing included a proposed return on common equity of 9.90% with a target equity ratio of 51%; a request to recoverrecovery over two years of approximately $6.6 million in previously deferred late payment charges related to a regulatory asset associated with COVID-19 (as noted below);COVID-19; and a continuation of full-revenuefull revenue decoupling withunder the General Revenues Adjustment (“GRA”) mechanism. The filing utilizesutilized a test year ended May 31, 2021 test year with certification of certaincertification-period adjustments through November 30, 2021. A decision is expected inOn February 7, 2022, the first quarter of 2022 with new rates effective April 2022.
Southwest’s previous general rate case application wasparties filed a stipulation with the PUCN, in February 2020, which requestedproviding for a statewide overall general raterevenue increase of approximately $38.3 million. The request sought an ROE$14.05 million, a return on common equity of 10%9.40% relative to a proposed capital structure of 50% target equity ratio, and continuation of the GRASouthwest’s full revenue decoupling mechanism. The PUCN issued its finalstipulation was approved by the commission, and new rates became effective April 1, 2022. The commission’s 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 previously authorized 9.25% ROE, with a capital structure of 49.26% equity and 50.74% debt. Southwest’s GRA was authorized to continue without modification. Full costdid not include recovery of the unamortized balance of excluded software projects from the previous general rate case was authorizedapproximate $6.6 million in this case, along with the inclusion of all proposed Gas Infrastructure Replacement (“GIR”) and Mesquite Expansion projects in rate base, as well as full recovery of test year and certification operations and maintenance expensespreviously deferred late payment charges related to a regulatory asset associated with the CDMI. Rates became effective in October 2020.
In association with an earlier Nevada rate case decision in December 2018, management requested reconsideration of several issues in the case; however, the PUCN ultimately granted no further 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 up to 24 months from the date of the appeal. COVID 19 (as noted below).
General Revenues Adjustment. As noted above, the continuation of the GRA was affirmed as part of Southwest’s previousmost recent general rate case with an expansion to include a large customer class (with average monthly throughput requirements greater than 15,000 therms), effective October 2020, and a request to continue the GRA is included in the most recently filed general rate case request.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. 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. With timing changes approved in the most recent ARA, the next ARA filing will be made in November 2021 with a test year endedrelated 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 schools,school COYLs, and any other COYLs that are identified to be a safety concern. The proposal contemplatespetition was approved in January 2022 and provides for capital investments ofup to $5 million per year for five years with $2 million allocated to northern Nevada and $3 million allocated to southern Nevada, and the establishment of a regulatory asset to track the capital- relatedcapital-related costs. After five years, the program will be reassessed to determine if it should be continued. Southwest anticipates a decision by the end of the year.
RNG. In January 2021, Southwest filed an application seeking approval to purchase RNG for incorporation into its gas supply portfolio pursuant to Senate Bill 154 (2019). Southwest sought authority to purchase up to 3% of 2035 forecasted demands in an effort to reach the established legislative goals of 1% or more by 2025, 2% or more by 2030 and 3% or more by 2035. In October 2021, the PUCN issued an order authorizing Southwest to purchase up to 1.99% of annual forecasted demand each year between 2021 and year end 2029.
Infrastructure Replacement Mechanism. In 2014, the PUCN approved final rules for the GIRGas Infrastructure Replacement (“GIR”) mechanism, which provided for the deferral and recovery of certain costs associated with accelerated replacement of qualifying infrastructure that would not otherwise provide incremental revenues between general rate cases. 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 to seek preapproval of qualifying replacement projects.
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SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  September 30, 2021March 31, 2022

related regulations provide Southwest with the opportunity to file a GIR “Advance Application” annually to seek preapproval of qualifying replacement projects.
In cases where preapproval of projects is requested and granted, a GIR rate application is separately filed to reset the GIR recovery surcharge rate related to previously approved and completed projects. On September 30, 2021, Southwest filed its latest rate application to reset the recovery surcharge to include cumulative deferrals through August 31, 2021. The updated surcharge rate is expected to result in an annual revenue decrease of approximately $1.4 million in southern Nevada and an annual revenue increase of $66,000 in northern Nevada. A decision is expected inThe parties reached a stipulation that was approved by the fourth quarter 2021 withcommission and new rates anticipatedbecame effective January 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 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 approved and becamerequested to become effective in January 2021.July 2022. In May 2021, Southwest filed its proposed Conservation and Energy Efficiency plan for the years 2022 – 2024, with a proposed annual budget amount of approximately $3 million. In OctoberA PUCN decision received in the fourth quarter 2021 the PUCN approvedauthorized the continuation of Southwest’s currently authorized commercial incentives program, residential incentives programprograms and energy education with an annual budget of approximately $1.4$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, including a capital investment of approximately $28 million and Southwest provides periodic updates and adjusts the construction of approximately 37 miles of distribution pipeline (includingrates to recover the approach main). The annual revenue requirement associated with the project is $2.8 million. A volumetricinvestments to serve customers as part of the ARA filings and 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 increasecase proceedings. As of $185,000, reflects the cumulative deferred revenue requirement associated withMarch 2022, approximately 40 miles of natural gas infrastructure has been installed throughout 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. A distribution loop, included in the initial estimated cost, is expected to be in service later this year.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 timely recover the associated revenue requirement consistent with the SB 151 regulations. Expansion to the Spring Creek area near Elko, Nevada consistsThe expansion facilities consist of a high-pressure approach main and associated regulator stations, an interior backbone, and thean extension of the distribution system from the interior backbone system.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, largely accepting Southwest’s proposal with modificationsincluding in regard to the rate recovery allocationsallocation 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. TheAs of March 31, 2022, approximately 28 miles of natural gas infrastructure has been installed throughout the Spring Creek expansion overall, as part of the earlier estimate,area, and is anticipated to be completed in 2026.
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 was held in August 2019 and the PUCN issued a 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 its 2020 general rate case filing, Southwest was authorized to include CDMI operations and maintenance costs since the beginning of the associated test year as part of its revenue requirement in the case. The customer information system portion of the CDMI was placed in service in May 2021 and the related capital costs, as well as ongoing operations and maintenance expenses, are included in Southwest’s recent general rate case request.
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 thatthe 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,amounts, totaling approximately $6.6 million, arewere included in Southwest’s recentrecently concluded general rate case requestrequest. 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 have a proposed two-year recovery period.denied recovery. However, this amount was previously fully reserved by management pending the outcome of the ultimate proceeding.
Proposed 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  September 30, 2021March 31, 2022

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. A decision is expected in the first quarter of 2022.
FERC Jurisdiction
General Rate Case. Great Basin Gas Transmission Company (“Great Basin”), formerly Paiute Pipeline Company, 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 an earlier general rate case. In January 2020, an agreement in principle was reached with the FERC Staff and intervenors to settle the case, the results of which would not significantly impact revenues overall. The agreement required the three largest transportation customers and all storage customers to have primary terms remaining of at least five years under their agreements, provided for the continuance of term-differentiated rates generally, and included a 9.90% pre-tax rate of return. Interim rates were made effective February 2020, and in August 2020 a FERC letter order approving the settlement became final. As part of the settlement, it was agreed that a future rate case would not be filed prior to January 1, 2022, but would be filed no later than May 31, 2025.
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 September 30, 2021,March 31, 2022, under-collections in each of Southwest’s service territories resulted in an asset of $240.8$368 million on the Company’s and Southwest’s Condensed Consolidated Balance Sheets. The significant changeincrease in the PGA balance was primarily 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 operating 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)September 30, 2021December 31, 2020September 30, 2020(Thousands of dollars)March 31, 2022December 31, 2021March 31, 2021
ArizonaArizona$191,907 $(3,901)$(14,674)Arizona$255,472 $214,387 $194,446 
Northern NevadaNorthern Nevada4,924 (8,601)(12,724)Northern Nevada13,700 12,632 3,036 
Southern NevadaSouthern Nevada38,964 (42,134)(45,506)Southern Nevada93,153 55,967 31,849 
CaliforniaCalifornia5,032 2,053 (3,338)California5,629 8,159 9,555 
$240,827 $(52,583)$(76,242)$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 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 $436increased $239 million in the first ninethree 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). Other impacts includecustomer bills to recover or return deferred balances. The prior period included a decrease ($45 million) in recoveries related$50 million incremental contribution to the Arizona decoupling mechanism balance between nine-month periods, and the impact of changes in components of working capital overall.noncontributory qualified
4744

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  September 30, 2021March 31, 2022

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 $696$9 million in the first ninethree months of 20212022 as compared to the same period of 2020.2021. The change was primarily due to Centuri’s acquisition of Riggs Distler (see Note 8 - Business Acquisitions). The overallan increase was offset by a decrease in capital expenditures in the natural gas operationsdistribution segment.
Financing Cash Flows. Net cash provided by consolidated financing activities increased $1.3 billion$163 million in the first ninethree months of 20212022 as compared to the same period of 2020.2021. The change was primarily due to Centuri,Southwest’s issuance of $600 million in association with the acquisition of Riggs Distler, entering into an amended and restated credit agreement. The agreement provided for a $1.145 billion secured term loan facility and a $400 million secured revolving credit facility, whichnotes, in addition to funding the Riggs Distler acquisition, refinancedCompany’s $452 million in net proceeds from the previous $590 million loan facility. Approximately $1.26 billionissuance 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 combined facility aslong-term portion of September 30, 2021. Additionally,its credit facility. The Company used the Company issued approximately $120 million more innet proceeds from the common stock underissuance to repay a portion of its equity shelf programs364-day Term Loan Facility that was funded in the first nine months of 2021 compared to issuances inDecember 2021. In February 2022, Southwest also redeemed $25 million 7.78% series Medium-term notes then maturing. By comparison, the prior year,period included $203 million net proceeds from the short-term portion of Southwest’s credit facility and also increased its dividend.
During the nine months ended September 30, 2021, the Company also issued 130,000 sharesCompany’s credit facility, all of common stock through the Dividend Reinvestment and Stock Purchase Plan, raising approximately $8.5 million.which is considered short-term.
The capital requirements and resources of the Company generally are determined independently for the natural gas operations and utility infrastructure servicesindividual business segments. Each business activitysegment is generally responsible for securing its own external debt 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 $382increased $260 million in the first ninethree 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, andas well as to other working capital changes.
Investing Cash Flows. Cash used in investing activities decreased $110increased $10 million in the first ninethree months of 20212022 as compared to the same period of 2020.2021. The change was primarily due to a decreaseincreases in capital expenditures in 20212022 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 $372$179 million in thethe first ninethree 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 to fund the increased cost of natural gas supply during the extreme cold weather event. Additionally, Southwest issued $300 millionthat did not recur in notes during the current period, compared to $450 million in notes issued2022, and proceeds in the prior period, and also redeemed $125year from a $250 million in notes in September 2020 that were otherwise due in December 2020. Borrowings and repayments between periods under Southwest’s credit facility, as well as and increase in dividends paid, comprisedTerm Loan issued to fund increased gas purchased costs during the remainder of the change.2021 freeze. See Note 5 – Debt.
Gas Segment Construction Expenditures, Debt Maturities, and Financing
During the twelve-month period ended September 30, 2021,March 31, 2022, construction expenditures for the natural gas operationsdistribution segment were $582 million.$615 million (not including amounts incurred for capital expenditures but not yet paid). The majority of these expenditures represented costs associated with the replacement of existing transmission, distribution, and general plant (including costs to implement our customer information system).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 $2.1 billion.$2.5 to $3.5 billion. Of this amount, approximately $650 million to $675$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.
48

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONSeptember 30, 2021

As noted earlier, in August 2021, Southwest issued $300 million aggregate principal amount of 3.18% Senior Notes at a discount of 0.019%. The notes will mature in August 2051. Southwest used the net proceeds from the offering to repay the outstanding balance under its credit facility, with the remaining net proceeds used for general corporate purposes.
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. The Company issued $88 million under this multi-year program during the third quarter of 2021. 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.
In May 2019, the Company filed an earlier automatic shelf registration statement with the SEC for the offer and sale of up to $300 million of common stock from time to time in at-the-market offerings under the related prospectus and sales agency agreement. The Company issued the remaining capacity ($46 million) of this equity program during the quarter ended March 31, 2021.
During the twelve months ended September 30, 2021, 3,699,445 shares were issued in at-the-market offerings at an average price of $67.86 per share with gross proceeds of $251 million, agent commissions of $2.5 million, and net proceeds of $248.5 million under the equity shelf programs noted above. See Note 4 – Common Stock for more information.
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 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. 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, expected external funding needs, and 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 September 30, 2021,March 31, 2022, the combined balance in the PGA accounts totaled an under-collection of $241$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 22, 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 September 30, 2021, $22 million was outstanding under this facility.
49

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONSeptember 30, 2021

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) during the first ninethree months of 20212022 was $150 million.$150 million. The maximum amount outstanding on the short-term portion of the credit facility during the first ninethree months of 20212022 was $125 million.$85 million. As of September 30, 2021,March 31, 2022, 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 liquidity 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 September 30, 2021,March 31, 2022, there were no borrowings outstanding under this program.
In August 2021, in association with the acquisition of Riggs Distler (refer toCenturi has a senior secured revolving credit and term loan facility. The Note 8 - Business Acquisitions), Centuri entered into an amended and restated credit agreement (refer to Note 5 – Debt). The line of credit portion comprises $400 million; associated amounts borrowed and repaid are available to be re-borrowed. The term loan facility portion provided approximately $1.145 billion. The term loan 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 either 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 the tangible and intangible personal property of each borrower, and certain of their direct and indirect subsidiaries, and all products, profits, and proceeds of the foregoing. Centuri assets securing the facility at September 30, 2021March 31, 2022 totaled $2.6$2.4 billion. The maximum amount outstanding on the combined facility during the first ninethree months of 20212022 was $1.3 billion.$1.2 billion. As of September 30, 2021, $112March 31, 2022, $108 million was outstanding on the revolving credit facility, in addition to $1.145$1.01 billion that was outstanding on the term loan portion of the facility. Also at September 30, 2021,March 31, 2022, there was approximately $235$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.
47

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

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 when LIBOR is no longer a widely recognized benchmark rate, the holding company and Southwest each may amend their respective credit facility as set forth in their credit facility agreement, which is also the case of Southwest’s Term Loan, in order to accommodate a replacement benchmark as set forth in the agreements. Certain LIBOR-based rates are scheduled to be discontinued as a benchmark or reference rate after 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. The Company had approximately $341.8 million available under the program as of September 30, 2021.
On October 5, 2021, the Company and Dominion Energy Questar Corporation, a wholly owned subsidiary of Dominion Energy, Inc., entered into a Purchase and Sale Agreement pursuant to which the Company would acquire the equity interests in Questar Pipelines. Pursuant to the Purchase and Sale Agreement, the purchase price is $1.545 billion in cash and the assumption of approximately $430 million in existing long-term debt. The Company has entered into an agreement for a new 364-day term loan that will provide the necessary consideration. If the acquisition closes as planned by the end of 2021, the Company expects this will be followed by permanent financing. See Note 5 – Debt.
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
50

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONSeptember 30, 2021

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 CDMI-related amounts and balances in 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 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 suspension or lifted 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 or its variants, following the ongoing resumption of commerce in our territories, 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
48

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

regulatory assets or 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)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
51

SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONSeptember 30, 2021

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, as updated in association with the Quarterly Report on Form 10-Q for the quarter ended June 30, 2020 and in this quarterly report on Form 10-Q.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.
In August 2021, the Company, through its utility infrastructure services subsidiaries, completed the acquisition of Drum Parent, Inc. (“Drum”) and its U.S. operations consisting principally of the utility infrastructure services operations of Drum’s primary subsidiary, Riggs Distler & Company, Inc. (“Riggs Distler”), a privately held infrastructure services business. Existing assets of the acquired business represents 2% of consolidated total assets and 2% of consolidated revenues for the period ended September 30, 2021 and is not significant to the Company’s consolidated financial statements. As permitted by SEC guidance for newly acquired businesses, the Company’s management elected to exclude Riggs Distler from its evaluation of disclosure controls and procedures and management’s report on changes in internal control over financial reporting from the date of the acquisition through September 30, 2021. The Company’s management is in the process of reviewing the operations of Riggs Distler and implementing the Company’s internal control structure over the acquired operations. This review will be completed in 2022.
Based on the most recent evaluation, as of September 30, 2021,March 31, 2022, management of Southwest Gas Holdings, Inc. and Southwest Gas Corporation, including the Chief Executive Officer and Chief Financial Officer, believes the Company’s and Southwest’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 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 third quarter of 2021 that have materially affected, or are likely to materially affect the Company’s internal control over financial reporting.

5249

SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  September 30, 2021March 31, 2022

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 2022 that have materially affected, or are likely to materially affect the Company’s internal control over financial reporting.
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 within Note 1 – Background, Organization, and Summary of Significant Accounting Policies for potential future liability claims.ongoing litigation, including litigation filed by certain stockholders and by funds managed by Carl Icahn.
ITEM 1A. Described below areis a risk factorsfactor 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. TheseThis risk factors supplement,factor supplements, and dodoes not replace, the Risk Factors and other disclosures made in our Annual Report on Form 10-K filed February 25, 2021 or Quarterly Report on Form 10-Q for the quarter ended June 30, 2021.March 1, 2022.
Financial, Economic, and MarketGeneral Risks
There may be unexpected delays in the completionOur ongoing review of the acquisition of Questar Pipelines, or it may not be completed at all.
As mentioned above in Note 1 to Part I Item 1, in October 2021 the Company entered into an agreement to purchase Dominion Energy Questar Pipeline, LLC and related entities (“Questar Pipelines”), a FERC-regulated interstate natural gas pipeline group that provides transportation and underground storage services in Utah, Wyoming, and Colorado. The acquisition is currently expected to close near year-end 2021, conditioned on the satisfaction or waiver (where legally permissible) of conditions in the Purchase and Sale Agreement (“Agreement”). The Agreement provides that either the Company or Questar Pipelines may terminate the Agreement if the acquisition has not occurred before December 31, 2021, subject to an extension if certain conditions have not been met, subsequently extending the termination date through June 30, 2022. Certain events may delay the completion of the acquisition or result in a termination of the Agreement. Some of these events are outside the control of either party. In particular, we are obligated to obtain various other third-party consents and approvals, and we can provide no assurances that such clearances, consents, or approvals will be obtained on terms acceptable to us, or at all. We may incur significant additional costs in connection with any delay in completing the acquisition or termination of the Agreement, in addition to significant transaction costs, including legal, financial advisory, accounting, and other costs beyond that which we have already incurred. We cannot provide assurance that the conditions to the completion of the acquisition will be satisfied or waived or that any adverse change, effect, event, circumstance, occurrence, or statement of facts thatstrategic alternatives could give rise to the termination of the Agreement will not occur, and we cannot provide any assurances as to whether or when the acquisition will be completed on the terms set forth in the Agreement or at all.
Failure to complete the acquisition of Questar Pipelines in a timely manner or at all could negatively affect our stock price. Completion of the acquisition could negativelymaterially impact our credit ratings.
We can provide no assurance that an acquisition will occur or that the conditions to it will be satisfied or waived in a timely manner, or at all. Also, we can provide no assurance that an event, change, or other circumstance that could give rise to the terminationstrategic direction, business, and results of an Agreement will not occur. Delays in completing an acquisition or the failure to complete one at all could negatively impact the market price of our common stock and it could decline significantly, particularly to the extent that the current market price reflects a market assumption that an acquisition will be completed. If an acquisition is delayed for any reason, we will be subject to several risks, including the diversion of management focus and resources from operational matters and other strategic opportunities while working to complete the acquisition. In addition, certain credit ratings agencies have indicated that an acquisition could have a negative impact on our current credit ratings.operations. We can provide no assurances as to the final determinationstructure 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 downgradeparticular strategic transaction are uncertain. Pursuit of any such strategic alternative could result in material disruptions in our (or Southwest’s) ratingsbusiness and what impact such a downgrade wouldotherwise have an adverse effect on our businesses.
Our business could be negatively affected as a result of actions of activist shareholders.
In October 2021, certain funds affiliated with Carl Icahn initiated a tender offer for sharesthe trading price of our common stock and threatened a proxy contest with respector our results of operations. We can provide no assurances as to the electionstructure or timing of directorsany potential strategic transaction or that one will be completed at our 2022 Annual Meeting of Stockholders. Responding to actions such as these and other actions by activist shareholders can be costly and time-consuming, disrupt our operations, and divert the attention of management and our employees. Perceived uncertainties among current and potential customers, employees, and other parties as to our future direction may result in the loss of potential business opportunities and may make it more difficult to attract and retain qualified personnel and business partners. These actions could also cause our stock price to experience periods of volatility.

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SOUTHWEST GAS HOLDINGS, INC.Form 10-Q
SOUTHWEST GAS CORPORATIONSeptember 30, 2021

Following the completion of the acquisition of Questar Pipelines, we may be unable to successfully integrate Questar Pipelines into our business and realize the anticipated benefits of the acquisition.
We may not be able to achieve the anticipated benefits of the acquisition of Questar Pipelines. We may not be able to integrate Questar Pipeline’s business without increases in costs or other difficulties. We and Questar are expecting to enter into a transition services agreement for a period of time following closing of the transaction. Upon the expiration of the anticipated transition services agreement, we may not be able to hire or retain sufficient staff to operate the Questar Pipelines business efficiently. Any unexpected costs or delays incurred in connection with the integration of Questar Pipelines could have a material adverse effect on our business, results of operations, financial condition, as well as the market price of our common stock.all.
ITEMS 2 through 3. None.
ITEM 4. MINE SAFETY DISCLOSURES Not applicable.
ITEM 5. OTHER INFORMATION None.
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SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  September 30, 2021March 31, 2022

ITEM 6. EXHIBITS
The following documents are filed, or furnished, as applicable, as part of this report on Form 10-Q:
Exhibit 2.02*-
Exhibit 3(i)-
Exhibit 3.01-
Exhibit 4.01-
Exhibit 4.02-
Exhibit 4.03-
Exhibit 4.0410.1-
Exhibit 10.01-
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 101.SCH104*-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).
*The Company has omitted schedules and other similar attachments to such agreement pursuant to Item 601(b) of Regulation S-K. The Company will furnish a copy of such omitted document to the SEC upon request.Filed herewith.
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SOUTHWEST GAS HOLDINGS, INC.  Form 10-Q
SOUTHWEST GAS CORPORATION  September 30, 2021March 31, 2022

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: November 9, 2021May 10, 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: November 9, 2021May 10, 2022
/s/ LORI L. COLVIN
Lori L. Colvin
Vice President/Controller and Chief Accounting Officer

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