Item 8. Financial Statements and Supplementary Data.

Index to financial statements and financial statement schedule:

	Page
Report of independent registered public accounting firm	37
Financial statements and supplementary data:
Consolidated balance sheets at September 30, 2020 and 2019	39
Consolidated statements of comprehensive income for the years ended September 30, 2020, 2019 and 2018	40
Consolidated statements of shareholders' equity for the years ended September 30, 2020, 2019 and 2018	41
Consolidated statements of cash flow for the years ended September 30, 2020, 2019 and 2018	42
Notes to consolidated financial statements	43
Selected Quarterly Financial Data (Unaudited)	82
Financial statement schedule for the years ended September 30, 2020, 2019 and 2018
Schedule II. Valuation and Qualifying Accounts	95

All other financial statement schedules are omitted because the required information is not present, or not present in amounts sufficient to require submission of the schedule or because the information required is included in the financial statements and accompanying notes thereto.

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Shareholders and the Board of Directors of Atmos Energy Corporation

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of Atmos Energy Corporation (the “Company“) as of September 30, 2020 and 2019, the related consolidated statements of comprehensive income, shareholders‘ equity, and cash flows, for each of the three years in the period ended September 30, 2020, and the related notes and financial statement schedule listed in the Index at Item 8 (collectively referred to as the "consolidated financial statements"). In our opinion, the consolidated financial statements present fairly, in all material respects, the financial position of the Company as of September 30, 2020 and 2019, and the results of its operations and its cash flows for each of the three years in the period ended September 30, 2020, in conformity with US generally accepted accounting principles.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the Company's internal control over financial reporting as of September 30, 2020, based on criteria established in Internal Control - Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 framework) and our report dated November 13, 2020 expressed an unqualified opinion thereon.

Basis for Opinion

These financial statements are the responsibility of the Company‘s management. Our responsibility is to express an opinion on the Company‘s financial statements based on our audits. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the US federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures include examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.

Critical Audit Matter

The critical audit matter communicated below is a matter arising from the current period audit of the financial statements that was communicated or required to be communicated to the audit committee and that: (1) relates to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective or complex judgments. The communication of the critical audit matter does not alter in any way our opinion on the financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates.

	Determination of Capital Costs
Description of the Matter	As more fully described in Note 2 to the financial statements, the Company capitalizes the direct and indirect costs of construction. Once a project is completed, it is placed into service and included in the Company’s rate base. Costs of maintenance and repairs that are not included in the Company’s rate base are charged to expense. For the year ended September 30, 2020, the Company capitalized approximately $1.9 billion of construction-related costs for regulated property, plant and equipment. Auditing management’s identification of capital additions and maintenance and repairs expense involved significant effort and auditor judgment. These amounts have both a higher magnitude and a higher likelihood of potential misstatement. As a cost-based, rate-regulated entity, the rates charged to customers are designed to recover the entity’s costs and provide a rate of return on rate base. Net property, plant and equipment is the most significant component of the Company’s rate base. As a result, inappropriate capitalization of costs could affect the amount, timing and classification of revenues and expenses in the consolidated financial statements.

How We Addressed the Matter in Our Audit	We obtained an understanding, evaluated the design and tested the operating effectiveness of the Company’s controls over the initial determination and approval of expenditures for either capital additions or maintenance and repair. For example, we selected a sample of projects initiated during the year to evaluate the effectiveness of management’s review controls to determine the proper categorization of project expenditures as either capitalizable costs or current-period expense. Our audit procedures included, among others, testing a sample of projects initiated during the year, including the evaluation of the nature of the project, with Company personnel outside of accounting and financial reporting. For example, we evaluated project setup through inspection of each project’s description for compliance with the Company’s capitalization policy as described in Note 2 and a series of inquiries of the project approver to understand how they assessed whether projects should be treated as capital or expense. Other audit procedures included evaluating whether the descriptions and amounts included on third-party invoices either support or contradict the project classification as capital, evaluating the appropriateness of individuals capitalizing direct labor charges to projects by assessing the relevance of their job function to the capital project, and recalculating other overhead costs capitalized to projects.

/s/ Ernst & Young LLP

We have served as the Company‘s auditor since 1983.

Dallas, Texas

November 13, 2020

ATMOS ENERGY CORPORATION

CONSOLIDATED BALANCE SHEETS

	September 30
	2020				2019
	(In thousands, except share data)
ASSETS
Property, plant and equipment	$	15,539,166			$	13,758,899
Construction in progress	418,055				421,694
	15,957,221				14,180,593
Less accumulated depreciation and amortization	2,601,874				2,392,924
Net property, plant and equipment	13,355,347				11,787,669
Current assets
Cash and cash equivalents	20,808				24,550
Accounts receivable, less allowance for doubtful accounts of $29,949 in 2020 and $15,899 in 2019	230,595				230,571
Gas stored underground	111,950				130,138
Other current assets	107,905				72,772
Total current assets	471,258				458,031
Goodwill	731,257				730,706
Deferred charges and other assets	801,170				391,213
	$	15,359,032			$	13,367,619
CAPITALIZATION AND LIABILITIES
Shareholders’ equity
Common stock, no par value (stated at $0.005 per share); 200,000,000 shares authorized; issued and outstanding: 2020 — 125,882,477 shares; 2019 — 119,338,925 shares	$	629			$	597
Additional paid-in capital	4,377,149				3,712,194
Accumulated other comprehensive loss	(57,589		)		(114,583		)
Retained earnings	2,471,014				2,152,015
Shareholders’ equity	6,791,203				5,750,223
Long-term debt	4,531,779				3,529,452
Total capitalization	11,322,982				9,279,675
Commitments and contingencies (See Note 12)
Current liabilities
Accounts payable and accrued liabilities	235,775				265,024
Other current liabilities	546,461				479,501
Short-term debt	—				464,915
Current maturities of long-term debt	165				—
Total current liabilities	782,401				1,209,440
Deferred income taxes	1,456,569				1,300,015
Regulatory excess deferred taxes (See Note 13)	697,764				705,101
Regulatory cost of removal obligation	457,188				473,172
Deferred credits and other liabilities	642,128				400,216
	$	15,359,032			$	13,367,619

See accompanying notes to consolidated financial statements.

ATMOS ENERGY CORPORATION

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

	Year Ended September 30
	2020				2019				2018
	(In thousands, except per share data)
Operating revenues
Distribution segment	$	2,626,993			$	2,745,461			$	3,003,047
Pipeline and storage segment	609,339				567,024				507,713
Intersegment eliminations	(415,195		)		(410,637		)		(395,214		)
Total operating revenues	2,821,137				2,901,848				3,115,546
Purchased gas cost
Distribution segment	1,071,227				1,268,591				1,559,836
Pipeline and storage segment	1,548				(360		)		1,978
Intersegment eliminations	(413,921		)		(409,394		)		(393,966		)
Total purchased gas cost	658,854				858,837				1,167,848
Operation and maintenance expense	629,601				630,308				594,795
Depreciation and amortization expense	429,828				391,456				361,083
Taxes, other than income	278,755				275,189				263,886
Operating income	824,099				746,058				727,934
Other non-operating income (expense)	7,171				7,404				(10,144		)
Interest charges	84,474				103,153				106,646
Income before income taxes	746,796				650,309				611,144
Income tax expense	145,353				138,903				8,080
Net Income	$	601,443			$	511,406			$	603,064
Basic net income per share	$	4.89			$	4.36			$	5.43
Diluted net income per share	$	4.89			$	4.35			$	5.43
Weighted average shares outstanding:
Basic	122,788				117,200				111,012
Diluted	122,872				117,461				111,012
Net income	$	601,443			$	511,406			$	603,064
Other comprehensive income (loss), net of tax
Net unrealized holding gains (losses) on available-for-sale securities, net of tax of $32, $64 and $(146)	106				218				(395		)
Cash flow hedges:
Amortization and unrealized gain (loss) on interest rate agreements, net of tax of $17,198, $(6,782) and $13,017	56,888				(22,944		)		44,936
Total other comprehensive income (loss)	56,994				(22,726		)		44,541
Total comprehensive income	$	658,437			$	488,680			$	647,605

See accompanying notes to consolidated financial statements.

ATMOS ENERGY CORPORATION

CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY

	Common stock							Additional Paid-in Capital				Accumulated Other Comprehensive Income (Loss)				Retained Earnings				Total
	Number of Shares			Stated Value
	(In thousands, except share and per share data)
Balance, September 30, 2017	106,104,634			$	531			$	2,536,365			$	(105,254	)		$	1,467,024			$	3,898,666
Net income	—			—				—				—				603,064				603,064
Other comprehensive income	—			—				—				44,541				—				44,541
Cash dividends ($1.94 per share)	—			—				—				—				(214,906		)		(214,906		)
Cumulative effect of accounting change	—			—				—				(22,934		)		22,934				—
Common stock issued:
Public offering	4,558,404			22				395,070				—				—				395,092
Direct stock purchase plan	131,213			1				11,322				—				—				11,323
Retirement savings plan	94,081			—				8,240				—				—				8,240
1998 Long-term incentive plan	385,351			2				3,469				—				—				3,471
Employee stock-based compensation	—			—				20,460				—				—				20,460
Balance, September 30, 2018	111,273,683			556				2,974,926				(83,647		)		1,878,116				4,769,951
Net income	—			—				—				—				511,406				511,406
Other comprehensive loss	—			—				—				(22,726		)		—				(22,726		)
Cash dividends ($2.10 per share)	—			—				—				—				(245,717		)		(245,717		)
Cumulative effect of accounting change	—			—				—				(8,210		)		8,210				—
Common stock issued:
Public offering	7,574,111			38				694,065				—				—				694,103
Direct stock purchase plan	110,063			1				11,070				—				—				11,071
Retirement savings plan	81,456			—				8,252				—				—				8,252
1998 Long-term incentive plan	299,612			2				2,946				—				—				2,948
Employee stock-based compensation	—			—				20,935				—				—				20,935
Balance, September 30, 2019	119,338,925			597				3,712,194				(114,583		)		2,152,015				5,750,223
Net income	—			—				—				—				601,443				601,443
Other comprehensive income	—			—				—				56,994				—				56,994
Cash dividends ($2.30 per share)	—			—				—				—				(282,444		)		(282,444		)
Common stock issued:
Public offering	6,101,916			30				624,272				—				—				624,302
Direct stock purchase plan	107,989			1				11,325				—				—				11,326
Retirement savings plan	78,941			—				8,222				—				—				8,222
1998 Long-term incentive plan	254,706			1				2,748				—				—				2,749
Employee stock-based compensation	—			—				18,388				—				—				18,388
Balance, September 30, 2020	125,882,477			$	629			$	4,377,149			$	(57,589	)		$	2,471,014			$	6,791,203

See accompanying notes to consolidated financial statements.

ATMOS ENERGY CORPORATION

CONSOLIDATED STATEMENTS OF CASH FLOWS

	Year Ended September 30
	2020				2019				2018
	(In thousands)
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$	601,443			$	511,406			$	603,064
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	429,828				391,456				361,083
Deferred income taxes	155,322				132,004				158,271
One-time income tax benefit	(20,962		)		—				(158,782		)
Stock-based compensation	9,583				11,121				12,863
Amortization of debt issuance costs	11,543				9,464				7,865
Equity component of AFUDC	(23,493		)		(11,165		)		—
Other	8,411				1,169				5,437
Changes in assets and liabilities:
(Increase) decrease in accounts receivable	7,167				18,724				(29,208		)
Decrease in gas stored underground	18,188				35,594				18,921
(Increase) decrease in other current assets	(35,878		)		(26,590		)		60,424
Increase in deferred charges and other assets	(31,935		)		(58,403		)		(10,049		)
Increase (decrease) in accounts payable and accrued liabilities	7,359				9,908				(11,857		)
Increase (decrease) in other current liabilities	(129,543		)		(103,895		)		74,707
Increase in deferred credits and other liabilities	30,966				47,976				31,923
Net cash provided by operating activities	1,037,999				968,769				1,124,662
CASH FLOWS USED IN INVESTING ACTIVITIES
Capital expenditures	(1,935,676		)		(1,693,477		)		(1,467,591		)
Proceeds from the sale of discontinued operations	—				4,000				3,000
Purchases of debt and equity securities	(50,517		)		(29,153		)		(46,401		)
Proceeds from sale of debt and equity securities	32,339				6,070				22,360
Maturities of debt securities	18,669				20,299				15,716
Other, net	9,667				8,601				9,350
Net cash used in investing activities	(1,925,518		)		(1,683,660		)		(1,463,566		)
CASH FLOWS FROM FINANCING ACTIVITIES
Net increase (decrease) in short-term debt	(464,915		)		(110,865		)		128,035
Proceeds from issuance of long-term debt, net of premium/discount	999,450				1,045,221				—
Net proceeds from equity offering	624,302				694,103				395,092
Issuance of common stock through stock purchase and employee retirement plans	19,548				19,323				19,563
Settlement of interest rate swaps	(4,426		)		(90,141		)		—
Repayment of long-term debt	—				(575,000		)		—
Cash dividends paid	(282,444		)		(245,717		)		(214,906		)
Debt issuance costs	(7,738		)		(11,254		)		—
Other	—				—				(1,518		)
Net cash provided by financing activities	883,777				725,670				326,266
Net increase (decrease) in cash and cash equivalents	(3,742		)		10,779				(12,638		)
Cash and cash equivalents at beginning of year	24,550				13,771				26,409
Cash and cash equivalents at end of year	$	20,808			$	24,550			$	13,771

See accompanying notes to consolidated financial statements.

ATMOS ENERGY CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

1. Nature of Business

Atmos Energy Corporation (Atmos Energy or the “Company”) and its subsidiaries are engaged in the regulated natural gas distribution and pipeline and storage businesses. Through our distribution business, we deliver natural gas through sales and transportation arrangements to over three million residential, commercial, public-authority and industrial customers through our six regulated distribution divisions in the service areas described below:

Division		Service Area
Atmos Energy Colorado-Kansas Division		Colorado, Kansas
Atmos Energy Kentucky/Mid-States Division		Kentucky, Tennessee, Virginia(1)
Atmos Energy Louisiana Division		Louisiana
Atmos Energy Mid-Tex Division		Texas, including the Dallas/Fort Worth metropolitan area
Atmos Energy Mississippi Division		Mississippi
Atmos Energy West Texas Division		West Texas

(1)	Denotes location where we have more limited service areas.

In addition, we transport natural gas for others through our distribution system. Our distribution business is subject to federal and state regulation and/or regulation by local authorities in each of the states in which our distribution divisions operate. Our corporate headquarters and shared-services function are located in Dallas, Texas, and our customer support centers are located in Amarillo and Waco, Texas.

Our pipeline and storage business, which is also subject to federal and state regulation, consists of the pipeline and storage operations of our Atmos Pipeline–Texas (APT) Division and our natural gas transmission business in Louisiana. The APT division provides transportation and storage services to our Mid-Tex Division, other third-party local distribution companies, industrial and electric generation customers, as well as marketers and producers. As part of its pipeline operations, APT manages five underground storage facilities in Texas. We also provide ancillary services customary to the pipeline industry including parking arrangements, lending and sales of inventory on hand. Our natural gas transmission operations in Louisiana are comprised of a 21-mile pipeline located in the New Orleans, Louisiana area that is primarily used to aggregate gas supply for our distribution division in Louisiana under a long-term contract and on a more limited basis, to third parties.

2**. Summary of Significant Accounting Policies**

Principles of consolidation — The accompanying consolidated financial statements include the accounts of Atmos Energy Corporation and its wholly-owned subsidiaries. All material intercompany transactions have been eliminated; however, we have not eliminated intercompany profits when such amounts are probable of recovery under the affiliates’ rate regulation process.

Use of estimates — The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses. The most significant estimates include the allowance for doubtful accounts, unbilled revenues, contingency accruals, pension and postretirement obligations, deferred income taxes, impairment of long-lived assets, risk management and trading activities, fair value measurements and the valuation of goodwill and other long-lived assets. Actual results could differ from those estimates.

Regulation — Our distribution and pipeline and storage operations are subject to regulation with respect to rates, service, maintenance of accounting records and various other matters by the respective regulatory authorities in the states in which we operate. Our accounting policies recognize the financial effects of the ratemaking and accounting practices and policies of the various regulatory commissions. Accounting principles generally accepted in the United States require cost-based, rate-regulated entities that meet certain criteria to reflect the authorized recovery of costs due to regulatory decisions in their financial statements. As a result, certain costs are permitted to be capitalized rather than expensed because they can be recovered through rates. We record certain costs as regulatory assets when future recovery through customer rates is considered probable. Regulatory liabilities are recorded when it is probable that revenues will be reduced for amounts that will be credited to customers through the ratemaking process. The amounts to be recovered or recognized are based upon historical experience and our understanding of the regulations. Further, regulation may impact the period in which revenues or expenses are recognized.

Substantially all of our regulatory assets are recorded as a component of deferred charges and other assets and our regulatory liabilities are recorded as a component of other current liabilities and deferred credits and other liabilities. Deferred

ATMOS ENERGY CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

gas costs are recorded either in other current assets or liabilities and the long-term portion of regulatory excess deferred taxes and regulatory cost of removal obligation are reported separately. Significant regulatory assets and liabilities as of September 30, 2020 and 2019 included the following:

	September 30
	2020				2019
	(In thousands)
Regulatory assets:
Pension and postretirement benefit costs	$	149,089			$	86,089
Infrastructure mechanisms(1)	183,943				131,894
Deferred gas costs	40,593				23,766
Recoverable loss on reacquired debt	4,894				6,551
Deferred pipeline record collection costs	29,839				26,418
Other	6,283				9,829
	$	414,641			$	284,547
Regulatory liabilities:
Regulatory excess deferred taxes(2)	$	718,651			$	726,307
Regulatory cost of service reserve	1,716				5,238
Regulatory cost of removal obligation	531,096				528,893
Deferred gas costs	19,985				14,112
Asset retirement obligation	20,348				17,054
APT annual adjustment mechanism	57,379				78,402
Other	17,838				16,120
	$	1,367,013			$	1,386,126

(1)	Infrastructure mechanisms in Texas, Louisiana and Tennessee allow for the deferral of all eligible expenses associated with capital expenditures incurred pursuant to these rules, including the recording of interest on the deferred expenses until the next rate proceeding (rate case or annual rate filing), at which time investment and costs would be recovered through base rates.

(2)

Due to the passage of the Kansas House Bill 2585, on June 1, 2020, we remeasured our deferred tax liability and updated our state deferred tax rate resulting in a $12.1 million regulatory liability as of September 30, 2020. The remaining amount reflects the remeasurement of the net deferred tax liability included in our rate base as a result of the Tax Cuts and Jobs Act of 2017 (the TCJA). Of this amount, $20.9 million as of September 30, 2020 and $21.2 million as of September 30, 2019 is recorded in other current liabilities. See Note 13 for further information.

As of September 30, 2020, we received regulatory orders in most states to defer into a regulatory asset all expenses, beyond the normal course of business, related to Coronavirus Disease 2019 (COVID-19), including bad debt expense. As of September 30, 2020, no amounts have been recorded as regulatory assets or liabilities for expenses related to COVID-19.

Revenue recognition

Distribution Revenues

Distribution revenues represent the delivery of natural gas to residential, commercial, industrial and public authority customers at prices based on tariff rates established by regulatory authorities in the states in which we operate. Revenue is recognized and our performance obligation is satisfied over time when natural gas is delivered and simultaneously consumed by our customers. We have elected to use the invoice practical expedient and recognize revenue for volumes delivered that we have the right to invoice our customers. We read meters and bill our customers on a monthly cycle basis. Accordingly, we estimate volumes from the last meter read to the balance sheet date and accrue revenue for gas delivered but not yet billed.

In our Texas and Mississippi jurisdictions, we pay franchise fees and gross receipt taxes to operate in these service areas. These franchise fees and gross receipts taxes are required to be paid regardless of our ability to collect from our customers. Accordingly, we account for these amounts on a gross basis in revenue and we record the associated tax expense as a component of taxes, other than income.

Pipeline and Storage Revenues

Pipeline and storage revenues primarily represent the transportation and storage of natural gas on our APT system and the transmission of natural gas through our 21-mile pipeline in Louisiana. APT provides transportation and storage services to our Mid-Tex Division, other third party local distribution companies and certain industrial customers under tariff rates approved by

ATMOS ENERGY CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

the RRC. APT also provides certain transportation and storage services to industrial and electric generation customers, as well as marketers and producers, under negotiated rates. Our pipeline in Louisiana is primarily used to aggregate gas supply for our Louisiana Division under a long-term contract and on a more limited basis to third parties. The demand fee charged to our Louisiana Division is subject to regulatory approval by the Louisiana Public Service Commission. We also manage two asset management plans with distribution affiliates of the Company at terms that have been approved by the applicable state regulatory commissions. The performance obligations for these transportation customers are satisfied by means of transporting customer-supplied gas to the designated location. Revenue is recognized and our performance obligation is satisfied over time when natural gas is delivered to the customer. Management determined that these arrangements qualify for the invoice practical expedient for recognizing revenue. For demand fee arrangements, revenue is recognized and our performance obligation is satisfied by standing ready to transport natural gas over the period of each individual month.

Alternative Revenue Program Revenues

In our distribution segment, we have weather-normalization adjustment mechanisms that serve to minimize the effects of weather on our residential and commercial revenues. Additionally, APT has a regulatory mechanism that requires that we share with its tariffed customers 75% of the difference between the total non-tariffed revenues earned during a test period and a revenue benchmark of $69.4 million that was established in its most recent rate case. Differences between actual revenues and revenues calculated under these mechanisms adjust the amount billed to customers. These mechanisms are considered to be alternative revenue programs under accounting standards generally accepted in the United States as they are deemed to be contracts between us and our regulator. Accordingly, revenue under these mechanisms are excluded from revenue from contracts with customers.

Purchased gas costs — Rates established by regulatory authorities are adjusted for increases and decreases in our purchased gas costs through purchased gas cost adjustment mechanisms. Purchased gas cost adjustment mechanisms provide gas distribution companies a method of recovering purchased gas costs on an ongoing basis without filing a rate case to address all of their non-gas costs. There is no margin generated through purchased gas cost adjustments, but they provide a dollar-for-dollar offset to increases or decreases in our distribution segment’s gas costs. The effects of these purchased gas cost adjustment mechanisms are recorded as deferred gas costs on our consolidated balance sheets.

Cash and cash equivalents — We consider all highly liquid investments with an original maturity of three months or less to be cash equivalents.

Accounts receivable and allowance for doubtful accounts — Accounts receivable arise from natural gas sales to residential, commercial, industrial, public authority and other customers. We establish an allowance for doubtful accounts to reduce the net receivable balance to the amount we reasonably expect to collect based on our collection experience or where we are aware of a specific customer’s inability or reluctance to pay. However, if circumstances change, our estimate of the recoverability of accounts receivable could be affected. Circumstances which could affect our estimates include, but are not limited to, customer credit issues, the level of natural gas prices, customer deposits and general economic conditions. Accounts are written off once they are deemed to be uncollectible.

Gas stored underground — Our gas stored underground is comprised of natural gas injected into storage to support the winter season withdrawals for our distribution operations. The average cost method is used for all of our distribution operations. Gas in storage that is retained as cushion gas to maintain reservoir pressure is classified as property, plant and equipment and is valued at cost.

Property, plant and equipment — Regulated property, plant and equipment is stated at original cost, net of contributions in aid of construction. The cost of additions includes direct construction costs, payroll related costs (taxes, pensions and other benefits), administrative and general costs and an allowance for funds used during construction. The allowance for funds used during construction (AFUDC) represents the capitalizable total cost of funds used to finance the construction of major projects.

The following table details amounts capitalized for the fiscal year ended September 30.

		2020				2019				2018
Component of AFUDC	Statement of Comprehensive Income Location	(In thousands)
Debt	Interest charges	$	8,436			$	7,643			$	6,810
Equity	Other non-operating income (expense)	23,493				11,165				—
		$	31,929			$	18,808			$	6,810

Major renewals, including replacement pipe, and betterments that are recoverable through our regulatory rate base are capitalized while the costs of maintenance and repairs that are not capitalizable are charged to expense as incurred. The costs of

ATMOS ENERGY CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

large projects are accumulated in construction in progress until the project is completed. When the project is completed, tested and placed in service, the balance is transferred to the regulated plant in service account included in the rate base and depreciation begins.

Regulated property, plant and equipment is depreciated at various rates on a straight-line basis. These rates are approved by our regulatory commissions and are comprised of two components: one based on average service life and one based on cost of removal. Accordingly, we recognize our cost of removal expense as a component of depreciation expense. The related cost of removal accrual is reflected as a regulatory liability on the consolidated balance sheet. At the time property, plant and equipment is retired, removal expenses less salvage, are charged to the regulatory cost of removal accrual. The composite depreciation rate was 3.0 percent, 3.1 percent and 3.2 percent for the fiscal years ended September 30, 2020, 2019 and 2018.

Other property, plant and equipment is stated at cost. Depreciation is generally computed on the straight-line method for financial reporting purposes based upon estimated useful lives.

Asset retirement obligations — We record a liability at fair value for an asset retirement obligation when the legal obligation to retire the asset has been incurred with an offsetting increase to the carrying value of the related asset. Accretion of the asset retirement obligation due to the passage of time is recorded as an operating expense.

As of September 30, 2020 and 2019, we had asset retirement obligations of $20.3 million and $17.1 million. Additionally, we had $14.4 million and $11.3 million of asset retirement costs recorded as a component of property, plant and equipment that will be depreciated over the remaining life of the underlying associated assets.

We believe we have a legal obligation to retire our natural gas storage facilities. However, we have not recognized an asset retirement obligation associated with our storage facilities because we are not able to determine the settlement date of this obligation as we do not anticipate taking our storage facilities out of service permanently. Therefore, we cannot reasonably estimate the fair value of this obligation.

Impairment of long-lived assets — We evaluate whether events or circumstances have occurred that indicate that other long-lived assets may not be recoverable or that the remaining useful life may warrant revision. When such events or circumstances are present, we assess the recoverability of long-lived assets by determining whether the carrying value will be recovered through the expected future cash flows. In the event the sum of the expected future cash flows resulting from the use of the asset is less than the carrying value of the asset, an impairment loss equal to the excess of the asset’s carrying value over its fair value is recorded.

Goodwill — We annually evaluate our goodwill balances for impairment during our second fiscal quarter or more frequently as impairment indicators arise. During the second quarter of fiscal 2020, we completed our annual goodwill impairment assessment using a qualitative assessment, as permitted under U.S. GAAP. We test goodwill for impairment at the reporting unit level on an annual basis and between annual tests if an event occurs or circumstances change that would more likely than not reduce the fair value of the reporting unit. Based on the assessment performed, we determined that our goodwill was not impaired. Although not applicable for the fiscal 2020 analysis, if the qualitative assessment resulted in impairment indicators, we would then use a present value technique based on discounted cash flows to estimate the fair value of our reporting units. These calculations are dependent on several subjective factors including the timing of future cash flows, future growth rates and the discount rate. An impairment charge is recognized if the carrying value of a reporting unit’s goodwill exceeds its fair value.

Lease accounting — We adopted the provisions of the new lease accounting standard beginning on October 1, 2019. Results for reporting periods beginning on October 1, 2019 are presented under the new lease accounting standard and prior periods are presented under the former lease accounting standard. Upon adoption, we recorded right of use assets and lease liabilities within the consolidated balance sheet. See Note 6 for further discussion regarding the accounting polices for these leases.

Marketable securities — As of September 30, 2020, we hold marketable securities classified as either equity or debt securities. Beginning on October 1, 2018, changes in fair value of our equity securities are recorded in net income, while debt securities, which are considered available for sale securities, are reported at market value with unrealized gains and losses shown as a component of accumulated other comprehensive income (loss). During fiscal 2018 and under the previous accounting guidance, all our debt and equity securities were considered available for sale securities.

We regularly evaluate the performance of our available for sale debt securities on an investment by investment basis for impairment, taking into consideration the securities’ purpose, volatility and current returns. If a determination is made that a decline in fair value is other than temporary, the related investment is written down to its estimated fair value.

ATMOS ENERGY CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Financial instruments and hedging activities — We use financial instruments to mitigate commodity price risk in our distribution and pipeline and storage segments and to mitigate interest rate risk. The objectives and strategies for using financial instruments have been tailored to our business and are discussed in Note 14.

We record all of our financial instruments on the balance sheet at fair value*,* with changes in fair value ultimately recorded in the statement of comprehensive income. These financial instruments are reported as risk management assets and liabilities and are classified as current or noncurrent other assets or liabilities based upon the anticipated settlement date of the underlying financial instrument. We record the cash flow impact of our financial instruments in operating cash flows based upon their balance sheet classification.

The timing of when changes in fair value of our financial instruments are recorded in the statement of comprehensive income depends on whether the financial instrument has been designated and qualifies as a part of a hedging relationship or if regulatory rulings require a different accounting treatment. Changes in fair value for financial instruments that do not meet one of these criteria are recognized in the statement of comprehensive income as they occur.

Financial Instruments Associated with Commodity Price Risk

In our distribution segment, the costs associated with and the realized gains and losses arising from the use of financial instruments to mitigate commodity price risk are included in our purchased gas cost adjustment mechanisms in accordance with regulatory requirements. Therefore, changes in the fair value of these financial instruments are initially recorded as a component of deferred gas costs and recognized in the consolidated statements of comprehensive income as a component of purchased gas cost when the related costs are recovered through our rates and recognized in revenue in accordance with accounting principles generally accepted in the United States. Accordingly, there is no earnings impact on our distribution segment as a result of the use of these financial instruments.

Financial Instruments Associated with Interest Rate Risk

In connection with the planned issuance of long-term debt, we may use financial instruments to manage interest rate risk. We currently manage this risk through the use of forward starting interest rate swaps to fix the Treasury yield component of the interest cost associated with anticipated financings. We designate these financial instruments as cash flow hedges at the time the agreements are executed. Unrealized gains and losses associated with the instruments are recorded as a component of accumulated other comprehensive income (loss). When the instruments settle, the realized gain or loss is recorded as a component of accumulated other comprehensive income (loss) and recognized as a component of interest charges over the life of the related financing arrangement. As of September 30, 2020 and 2019, no cash was required to be held in margin accounts.

Fair Value Measurements — We report certain assets and liabilities 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 (exit price). We primarily use quoted market prices and other observable market pricing information in valuing our financial assets and liabilities and minimize the use of unobservable pricing inputs in our measurements.

Fair-value estimates also consider our own creditworthiness and the creditworthiness of the counterparties involved. Our counterparties consist primarily of financial institutions and major energy companies. This concentration of counterparties may materially impact our exposure to credit risk resulting from market, economic or regulatory conditions. We seek to minimize counterparty credit risk through an evaluation of their financial condition and credit ratings and the use of collateral requirements under certain circumstances.

Amounts reported at fair value are subject to potentially significant volatility based upon changes in market prices, including, but not limited to, the valuation of the portfolio of our contracts, maturity and settlement of these contracts and newly originated transactions and interest rates, each of which directly affect the estimated fair value of our financial instruments. We believe the market prices and models used to value these financial instruments represent the best information available with respect to closing exchange and over-the-counter quotations, time value and volatility factors underlying the contracts. Values are adjusted to reflect the potential impact of an orderly liquidation of our positions over a reasonable period of time under then current market conditions.

Authoritative accounting literature establishes a fair value hierarchy that prioritizes the inputs used to measure fair value based on observable and unobservable data. The hierarchy categorizes the inputs into three levels, with the highest priority given to unadjusted quoted prices in active markets for identical assets and liabilities (Level 1) and the lowest priority given to unobservable inputs (Level 3). The levels of the hierarchy are described below:

Level 1 — Represents unadjusted quoted prices in active markets for identical assets or liabilities. An active market for the asset or liability is defined as a market in which transactions for the asset or liability occur with sufficient frequency and volume to provide pricing information on an ongoing basis. Prices actively quoted on national exchanges are used to determine the fair value of most of our assets and liabilities recorded on our balance sheet at fair value.

ATMOS ENERGY CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Our Level 1 measurements consist primarily of our debt and equity securities. The Level 1 measurements for investments in the Atmos Energy Corporation Master Retirement Trust (the Master Trust), Supplemental Executive Benefit Plan and postretirement benefit plan consist primarily of exchange-traded financial instruments.

Level 2 — Represents pricing inputs other than quoted prices included in Level 1 that are either directly or indirectly observable for the asset or liability as of the reporting date. These inputs are derived principally from, or corroborated by, observable market data. Our Level 2 measurements primarily consist of non-exchange-traded financial instruments, such as over-the-counter options and swaps and municipal and corporate bonds where market data for pricing is observable. The Level 2 measurements for investments in our Master Trust, Supplemental Executive Benefit Plan and postretirement benefit plan consist primarily of non-exchange traded financial instruments such as corporate bonds and government securities.

Level 3 — Represents generally unobservable pricing inputs which are developed based on the best information available, including our own internal data, in situations where there is little if any market activity for the asset or liability at the measurement date. The pricing inputs utilized reflect what a market participant would use to determine fair value. We currently do not have any Level 3 investments.

Pension and other postretirement plans — Pension and other postretirement plan costs and liabilities are determined on an actuarial basis and are affected by numerous assumptions and estimates including the market value of plan assets, estimates of the expected return on plan assets, assumed discount rates and current demographic and actuarial mortality data. Our measurement date is September 30. The assumed discount rate and the expected return are the assumptions that generally have the most significant impact on our pension costs and liabilities. The assumed discount rate, the assumed health care cost trend rate and assumed rates of retirement generally have the most significant impact on our postretirement plan costs and liabilities. For the valuation performed as of September 30, 2020, decreases in the discount rate resulted in actuarial losses that increased our plan obligations.

The discount rate is utilized principally in calculating the actuarial present value of our pension and postretirement obligation and net pension and postretirement cost. When establishing our discount rate, we consider high quality corporate bond rates based on bonds available in the marketplace that are suitable for settling the obligations, changes in those rates from the prior year and the implied discount rate that is derived from matching our projected benefit disbursements with currently available high quality corporate bonds.

The expected long-term rate of return on assets is utilized in calculating the expected return on plan assets component of the annual pension and postretirement plan cost. We estimate the expected return on plan assets by evaluating expected bond returns, equity risk premiums, asset allocations, the effects of active plan management, the impact of periodic plan asset rebalancing and historical performance. We also consider the guidance from our investment advisors when making a final determination of our expected rate of return on assets. To the extent the actual rate of return on assets realized over the course of a year is greater than or less than the assumed rate, that year’s annual pension or postretirement plan cost is not affected. Rather, this gain or loss is amortized over the expected future working lifetime of the plan participants.

The expected return on plan assets is then calculated by applying the expected long-term rate of return on plan assets to the market-related value of the plan assets. The market-related value of our plan assets represents the fair market value of the plan assets, adjusted to smooth out short-term market fluctuations over a five-year period. The use of this calculation will delay the impact of current market fluctuations on the pension expense for the period.

We use a corridor approach to amortize actuarial gains and losses. Under this approach, net gains or losses in excess of ten percent of the larger of the pension benefit obligation or the market-related value of the assets are amortized on a straight-line basis. The period of amortization is the average remaining service of active participants who are expected to receive benefits under the plan.

We estimate the assumed health care cost trend rate used in determining our annual postretirement net cost based upon our actual health care cost experience, the effects of recently enacted legislation and general economic conditions. Our assumed rate of retirement is estimated based upon the annual review of our participant census information as of the measurement date.

On October 1, 2018 we adopted new accounting guidance, which required we present only the current service cost component of the net benefit cost within operations and maintenance expense in the consolidated statements of comprehensive income. The remaining components of net benefit cost are recorded in other non-operating income (expense) in our consolidated statements of comprehensive income. The change in presentation of these costs was implemented on a retrospective basis as required by the guidance. In lieu of determining how each component of the net periodic benefit cost was actually reflected in the fiscal 2018 statement of comprehensive income, we elected to utilize a practical expedient that permits the use of the amounts disclosed for these costs in our pension and post-retirement benefit plans footnote as the basis to retroactively apply this standard.

ATMOS ENERGY CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

In addition, only the service cost component of net benefit cost is eligible for capitalization and we continue to capitalize these costs into property, plant and equipment. Additionally, we defer into a regulatory asset the portion of non-service components of net periodic benefit cost that are capitalizable for regulatory purposes.

Income taxes — Income taxes are determined based on the liability method, which results in income tax assets and liabilities arising from temporary differences. Temporary differences are differences between the tax bases of assets and liabilities and their reported amounts in the financial statements that will result in taxable or deductible amounts in future years. The liability method requires the effect of tax rate changes on accumulated deferred income taxes to be reflected in the period in which the rate change was enacted. The liability method also requires that deferred tax assets be reduced by a valuation allowance unless it is more likely than not that the assets will be realized.

The Company may recognize the tax benefit from uncertain tax positions only if it is at least more likely than not that the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position. The tax benefits recognized in the financial statements from such a position should be measured based on the largest benefit that has a greater than fifty percent likelihood of being realized upon settlement with the taxing authorities. We recognize accrued interest related to unrecognized tax benefits as a component of interest charges. We recognize penalties related to unrecognized tax benefits as a component of miscellaneous income (expense) in accordance with regulatory requirements.

Tax collections — We are allowed to recover from customers revenue-related taxes that are imposed upon us. We record such taxes as operating expenses and record the corresponding customer charges as operating revenues. However, we do collect and remit various other taxes on behalf of various governmental authorities, and we record these amounts in our consolidated balance sheets on a net basis. We do not collect income taxes from our customers on behalf of governmental authorities.

Contingencies — In the normal course of business, we are confronted with issues or events that may result in a contingent liability. These generally relate to lawsuits, claims made by third parties or the action of various regulatory agencies. For such matters, we record liabilities when they are considered probable and estimable, based on currently available facts and our estimates of the ultimate outcome or resolution of the liability in the future. Actual results may differ from estimates, depending on actual outcomes or changes in the facts or expectations surrounding each potential exposure.

Subsequent events — Except as noted in Note 7 regarding the public offering of senior notes, no events occurred subsequent to the balance sheet date that would require recognition or disclosure in the financial statements.

Recent accounting pronouncements

Accounting pronouncements adopted in fiscal 2020

In February 2016, the Financial Accounting Standards Board (FASB) issued a comprehensive new leasing standard that requires lessees to recognize a lease liability and a right-of-use (ROU) asset for all leases, including operating leases on its balance sheet. The new standard was effective for us beginning on October 1, 2019. See Note 6 to the consolidated financial statements for further details regarding our adoption of the new lease standard and the related disclosures.

Accounting pronouncements that will be effective after fiscal 2020

In March 2020, the FASB issued optional guidance which will ease the potential burden in accounting for or recognizing the effects of reference rate reform on financial reporting. The amendments provide optional expedients and exceptions for applying U.S. GAAP to contracts, hedging relationships and other transactions affected by the cessation of the London Interbank Offered Rate (LIBOR). The amendments can be elected immediately, as of March 12, 2020, through December 31, 2022. We are currently evaluating if we will apply the optional guidance as we assess the impact of the cessation of LIBOR on our current contracts and hedging relationships and the potential impact on our financial position, results of operations and cash flows.

In December 2019, the FASB issued new guidance related to accounting for income taxes which removes certain exceptions for recognizing deferred taxes for investments, performing intraperiod allocations and calculating income taxes in interim periods. The new standard also adds guidance to reduce complexity in certain areas, such as recognizing deferred taxes for tax goodwill and allocating taxes to members of a consolidated group. The new standard will be effective for us beginning on October 1, 2021; early adoption is permitted. We do not believe the new standard will have a material impact on our financial position, results of operations and cash flows.

In June 2016, the FASB issued new guidance which will require credit losses on most financial assets measured at amortized cost and certain other instruments to be measured using an expected credit loss model. Under this model, entities will estimate credit losses over the entire contractual term of the instrument from the date of initial recognition of that instrument. In contrast, current U.S. GAAP is based on an incurred loss model that delays recognition of credit losses until it is probable the loss has been incurred. The new guidance also introduces a new impairment recognition model for available-for-sale debt

ATMOS ENERGY CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

securities that will require credit losses for available-for-sale debt securities to be recorded through an allowance account. The new standard was effective for us beginning on October 1, 2020. We do not anticipate the adoption of this standard will have a material impact to our financial position, results of operations and cash flows.

3. Segment Information

As of September 30, 2020, we manage and review our consolidated operations through the following two reportable segments:

•	The distribution segment is primarily comprised of our regulated natural gas distribution and related sales operations in eight states.

•	The pipeline and storage segment is comprised primarily of the pipeline and storage operations of our Atmos Pipeline-Texas division and our natural gas transmission operations in Louisiana.

Our determination of reportable segments considers the strategic operating units under which we manage sales of various products and services to customers. Although our distribution segment operations are geographically dispersed, they are aggregated and reported as a single segment as each natural gas distribution division has similar economic characteristics. In addition, because the pipeline and storage operations of our Atmos Pipeline-Texas division and our natural gas transmission operations in Louisiana have similar economic characteristics, they have been aggregated and reported as a single segment.

The accounting policies of the segments are the same as those described in the summary of significant accounting policies. We evaluate performance based on net income or loss of the respective operating units. We allocate interest and pension expense to the pipeline and storage segment; however, there is no debt or pension liability recorded on the pipeline and storage segment balance sheet. All material intercompany transactions have been eliminated; however, we have not eliminated intercompany profits when such amounts are probable of recovery under the affiliates’ rate regulation process. Income taxes are allocated to each segment as if each segment’s income taxes were calculated on a separate return basis.

Income statements and capital expenditures by segment are shown in the following tables.

	Year Ended September 30, 2020
	Distribution				Pipeline and Storage				Eliminations				Consolidated
	(In thousands)
Operating revenues from external parties	$	2,624,251			$	196,886			$	—			$	2,821,137
Intersegment revenues	2,742				412,453				(415,195		)		—
Total operating revenues	2,626,993				609,339				(415,195		)		2,821,137
Purchased gas cost	1,071,227				1,548				(413,921		)		658,854
Operation and maintenance expense	472,760				158,115				(1,274		)		629,601
Depreciation and amortization expense	309,582				120,246				—				429,828
Taxes, other than income	245,181				33,574				—				278,755
Operating income	528,243				295,856				—				824,099
Other non-operating income (expense)	(1,265		)		8,436				—				7,171
Interest charges	39,634				44,840				—				84,474
Income before income taxes	487,344				259,452				—				746,796
Income tax expense	91,680				53,673				—				145,353
Net income	$	395,664			$	205,779			$	—			$	601,443
Capital expenditures	$	1,466,631			$	469,045			$	—			$	1,935,676

ATMOS ENERGY CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

	Year Ended September 30, 2019
	Distribution				Pipeline and Storage				Eliminations				Consolidated
	(In thousands)
Operating revenues from external parties	$	2,742,824			$	159,024			$	—			$	2,901,848
Intersegment revenues	2,637				408,000				(410,637		)		—
Total operating revenues	2,745,461				567,024				(410,637		)		2,901,848
Purchased gas cost	1,268,591				(360		)		(409,394		)		858,837
Operation and maintenance expense	480,222				151,329				(1,243		)		630,308
Depreciation and amortization expense	283,697				107,759				—				391,456
Taxes, other than income	242,179				33,010				—				275,189
Operating income	470,772				275,286				—				746,058
Other non-operating income	6,241				1,163				—				7,404
Interest charges	60,031				43,122				—				103,153
Income before income taxes	416,982				233,327				—				650,309
Income tax expense	88,168				50,735				—				138,903
Net income	$	328,814			$	182,592			$	—			$	511,406
Capital expenditures	$	1,274,613			$	418,864			$	—			$	1,693,477

	Year Ended September 30, 2018
	Distribution				Pipeline and Storage				Eliminations				Consolidated
	(In thousands)
Operating revenues from external parties	$	3,000,404			$	115,142			$	—			$	3,115,546
Intersegment revenues	2,643				392,571				(395,214		)		—
Total operating revenues	3,003,047				507,713				(395,214		)		3,115,546
Purchased gas cost	1,559,836				1,978				(393,966		)		1,167,848
Operation and maintenance expense	461,048				134,995				(1,248		)		594,795
Depreciation and amortization expense	264,930				96,153				—				361,083
Taxes, other than income	231,566				32,320				—				263,886
Operating income	485,667				242,267				—				727,934
Other non-operating expense	(6,649		)		(3,495		)		—				(10,144		)
Interest charges	65,850				40,796				—				106,646
Income before income taxes	413,168				197,976				—				611,144
Income tax expense (benefit)	(29,798		)		37,878				—				8,080
Net income	$	442,966			$	160,098			$	—			$	603,064
Capital expenditures	$	1,025,800			$	441,791			$	—			$	1,467,591

ATMOS ENERGY CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

The following table summarizes our revenues from external parties, excluding intersegment revenues, by products and services for the fiscal years ended September 30.

	2020				2019				2018
	(In thousands)
Distribution revenues:
Gas sales revenues:
Residential	$	1,717,070			$	1,733,548			$	1,916,101
Commercial	654,963				711,284				797,073
Industrial	89,641				118,046				131,267
Public authority and other	42,007				42,613				47,714
Total gas sales revenues	2,503,681				2,605,491				2,892,155
Transportation revenues	97,441				95,629				99,250
Other gas revenues	23,129				41,704				8,999
Total distribution revenues	2,624,251				2,742,824				3,000,404
Pipeline and storage revenues	196,886				159,024				115,142
Total operating revenues	$	2,821,137			$	2,901,848			$	3,115,546

Balance sheet information at September 30, 2020 and 2019 by segment is presented in the following tables.

	September 30, 2020
	Distribution				Pipeline and Storage				Eliminations				Consolidated
	(In thousands)
Property, plant and equipment, net	$	9,944,978			$	3,410,369			$	—			$	13,355,347
Total assets	$	14,578,176			$	3,647,907			$	(2,867,051	)		$	15,359,032

	September 30, 2019
	Distribution				Pipeline and Storage				Eliminations				Consolidated
	(In thousands)
Property, plant and equipment, net	$	8,737,590			$	3,050,079			$	—			$	11,787,669
Total assets	$	12,579,741			$	3,279,323			$	(2,491,445	)		$	13,367,619

4. Earnings Per Share

We use the two-class method of computing earnings per share because we have participating securities in the form of non-vested restricted stock units with a nonforfeitable right to dividend equivalents, for which vesting is predicated solely on the passage of time. The calculation of earnings per share using the two-class method excludes income attributable to these participating securities from the numerator and excludes the dilutive impact of those shares from the denominator. Basic weighted average shares outstanding is calculated based upon the weighted average number of common shares outstanding during the periods presented. Also, this calculation includes fully vested stock awards that have not yet been issued as common stock. Additionally, the weighted average shares outstanding for diluted EPS includes the incremental effects of the forward sale agreements, discussed in Note 8, when the impact is dilutive.

ATMOS ENERGY CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Basic and diluted earnings per share for the fiscal years ended September 30 are calculated as follows:

	2020				2019				2018
	(In thousands, except per share data)
Basic Earnings Per Share
Net Income	$	601,443			$	511,406			$	603,064
Less: Income allocated to participating securities	444				416				580
Net Income available to common shareholders	$	600,999			$	510,990			$	602,484
Basic weighted average shares outstanding	122,788				117,200				111,012
Net Income per share — Basic	$	4.89			$	4.36			$	5.43
Diluted Earnings Per Share
Net Income available to common shareholders	$	600,999			$	510,990			$	602,484
Effect of dilutive shares	—				—				—
Net Income available to common shareholders	$	600,999			$	510,990			$	602,484
Basic weighted average shares outstanding	122,788				117,200				111,012
Dilutive shares	84				261				—
Diluted weighted average shares outstanding	122,872				117,461				111,012
Net Income per share — Diluted	$	4.89			$	4.35			$	5.43

5. Revenue

The following table disaggregates our revenue from contracts with customers by customer type and segment and provides a reconciliation to total operating revenues, including intersegment revenues, for the period presented.

	Year Ended September 30, 2020								Year Ended September 30, 2019
	Distribution				Pipeline and Storage				Distribution				Pipeline and Storage
	(In thousands)
Gas sales revenues:
Residential	$	1,704,444			$	—			$	1,755,229			$	—
Commercial	650,396				—				716,757				—
Industrial	89,467				—				118,060				—
Public authority and other	41,339				—				42,796				—
Total gas sales revenues	2,485,646				—				2,632,842				—
Transportation revenues	99,435				636,819				97,495				623,808
Miscellaneous revenues	19,085				9,754				26,050				8,060
Revenues from contracts with customers	2,604,166				646,573				2,756,387				631,868
Alternative revenue program revenues(1)	20,856				(37,234		)		(12,958		)		(64,844		)
Other revenues	1,971				—				2,032				—
Total operating revenues	$	2,626,993			$	609,339			$	2,745,461			$	567,024

(1)	In our distribution segment, we have weather-normalization adjustment mechanisms that serve to mitigate the effects of weather on our revenue. Additionally, APT has a regulatory mechanism that requires that we share with its tariffed customers 75% of the difference between the total non-tariffed revenues earned during a test period and a revenue benchmark.

6**. Leases**

We adopted the provisions of the new lease accounting standard beginning on October 1, 2019, using the optional transition method, which allowed us to apply the provisions of the new standard to all leases that existed as of the date of adoption. Therefore, results for reporting periods beginning on October 1, 2019 are presented under the new lease accounting standard and prior periods are presented under the former lease accounting standard.

ATMOS ENERGY CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

The new guidance included several practical expedients to facilitate the implementation of the new standard. The following summarizes the practical expedients we used to implement the standard.

• We elected to bundle our lease and non-lease components as a single component for all asset classes.

• We elected not to perform the following:

◦Evaluate existing or expired land easements prior to October 1, 2019 to determine if they are leases.

◦Include short-term leases in the calculation of our lease liability.

◦Evaluate existing or expired contracts to determine if they are leases.

◦Assess lease classification for existing or expired leases.

◦Review initial direct costs for existing leases.

◦Use hindsight in order to determine the lease term or impairment of our ROU assets.

Upon adoption of this new guidance, we recorded ROU assets and lease liabilities of $231.3 million. Additionally, we reclassified a net $6.5 million of accrued and prepaid lease costs to the ROU asset and $2.5 million related to an existing finance lease from deferred credits and other liabilities to long-term debt.

Implementation of the new lease accounting guidance had no material impact on our consolidated statements of comprehensive income or our consolidated statements of cash flows. Additionally, we did not record a cumulative-effect adjustment to retained earnings on the opening balance sheet.

New Lease Accounting Policy

We determine if an arrangement is a lease at the inception of the agreement based on the terms and conditions in the contract. A contract contains a lease if there is an identified asset and we have the right to control the asset. We are the lessee for substantially all of our leasing activity, which primarily includes operating leases for office and warehouse space, tower space, vehicles and heavy equipment used in our operations. We are also a lessee in finance leases for service centers.

We record a lease liability and a corresponding ROU asset for all of our leases with a term greater than 12 months. For lease contracts containing renewal and termination options, we include the option period in the lease term when it is reasonably certain the option will be exercised. We most frequently assume renewal options at the inception of the arrangement for our tower and fleet leases, based on our anticipated use of the assets. Real estate leases that contain a renewal option are evaluated on a lease-by-lease basis to determine if the option period should be included in the lease term. Currently, we have not included material renewal options for real estate leases in our ROU asset or lease liability. The following table presents our weighted average remaining lease term for our leases.

	September 30, 2020
Weighted average remaining lease term (years)
Finance leases	19.1
Operating leases	10.6

The lease liability represents the present value of all lease payments over the lease term. The discount rate used to determine the present value of the lease liability is the rate implicit in the lease unless that rate cannot be readily determined. We use the implicit rate stated in the agreement to determine the lease liability for our fleet leases. We use our corporate collateralized incremental borrowing rate as the discount rate for all other lease agreements. This rate is appropriate because we believe it represents the rate we would have incurred to borrow funds to acquire the leased asset over a similar term. We calculated this rate using a combination of inputs, including our current credit rating, quoted market prices of interest rates for our publicly traded unsecured debt, observable market yield curve data for peer companies with a credit rating one notch higher than our current credit rating and the lease term.

The following table represents our weighted average discount rate:

	September 30, 2020
Weighted average discount rate
Finance leases	8.0	%
Operating leases	2.9	%

The ROU asset represents the right to use the underlying asset for the lease term, and is equal to the lease liability, adjusted for prepaid or accrued lease payments and any lease incentives that have been paid to us or when we are reasonably certain to incur costs equal to or greater than the allowance defined in the contract.

ATMOS ENERGY CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Variable payments included in our leasing arrangements are expensed in the period in which the obligation for these payments is incurred. Variable payments are dependent on usage, output or may vary for other reasons. Most of our variable lease expense is related to tower leases that have escalating payments based on changes to a stated CPI index, and usage of certain office equipment.

We have not provided material residual value guarantees for our leases, nor do our leases contain material restrictions or covenants.

Lease costs for the year ended September 30, 2020 are presented in the table below. These costs include both amounts recognized in expense and amounts capitalized. For the year ended September 30, 2020 we did not have material short-term lease costs or variable lease costs.

	September 30, 2020
	(In thousands)
Finance lease cost	$	622
Operating lease cost	40,887
Total lease cost	$	41,509

Our ROU assets and lease liabilities are presented as follows on the consolidated balance sheets:

	Balance Sheet Classification	September 30, 2020
		(In thousands)
Assets
Finance leases	Net Property, Plant and Equipment	$	8,480
Operating leases	Deferred charges and other assets	227,146
Total right-of-use assets		$	235,626
Liabilities
Current
Finance leases	Current maturities of long-term debt	$	165
Operating leases	Other current liabilities	35,716
Noncurrent
Finance leases	Long-term debt	8,466
Operating leases	Deferred credits and other liabilities	201,071
Total lease liabilities		$	245,418

Other pertinent information related to leases was as follows. During the year ended September 30, 2020, amounts paid in cash for our finance leases were not material.

	September 30, 2020
	(In thousands)
Cash paid amounts included in the measurement of lease liabilities
Operating cash flows used for operating leases	$	37,758
Right-of-use assets obtained in exchange for lease obligations
Finance leases	$	6,083
Operating leases	$	34,169

ATMOS ENERGY CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Maturities of our lease liabilities as of September 30, 2020 were as follows:

	Total			Finance Leases			Operating Leases
	(In thousands)
2021	$	40,790		$	741		$	40,049
2022	38,423			751			37,672
2023	33,266			762			32,504
2024	25,464			773			24,691
2025	17,666			784			16,882
Thereafter	139,049			12,666			126,383
Total lease payments	294,658			16,477			278,181
Less: Imputed interest	49,240			7,846			41,394
Total	$	245,418		$	8,631		$	236,787
Reported as of September 30, 2020
Short-term lease liabilities	$	35,881		$	165		$	35,716
Long-term lease liabilities	209,537			8,466			201,071
Total lease liabilities	$	245,418		$	8,631		$	236,787

Disclosures Related to Prior Periods

The future minimum lease payments as of September 30, 2019 were as follows:

	Operating Leases**(1)**				Capital Lease
	(In thousands)
2020	$	21,017			$	243
2021	20,416				248
2022	19,370				253
2023	18,071				258
2024	15,718				263
Thereafter	105,544				4,343
Total minimum lease payments	$	200,136			5,608
Less amount representing interest					3,018
Present value of net minimum lease payments					$	2,590

(1)

Future minimum lease payments do not include amounts for fleet leases and other de minimis items that can be renewed beyond the initial lease term. The Company anticipates renewing the leases beyond the initial term, but the anticipated payments associated with the renewals do not meet the definition of expected minimum lease payments and therefore are not included above. Expected payments are $17.6 million in 2020, $18.0 million in 2021, $11.8 million in 2022, $8.5 million in 2023, $5.4 million in 2024 and $2.7 million thereafter.

Consolidated lease and rental expense amounted to $40.4 million and $33.8 million for fiscal 2019 and 2018.

ATMOS ENERGY CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

7**. Debt**

Long-term debt

Long-term debt at September 30, 2020 and 2019 consisted of the following:

	2020				2019
	(In thousands)
Unsecured 3.00% Senior Notes, due 2027	$	500,000			$	500,000
Unsecured 2.625% Senior Notes, due 2029	300,000				—
Unsecured 5.95% Senior Notes, due 2034	200,000				200,000
Unsecured 5.50% Senior Notes, due 2041	400,000				400,000
Unsecured 4.15% Senior Notes, due 2043	500,000				500,000
Unsecured 4.125% Senior Notes, due 2044	750,000				750,000
Unsecured 4.30% Senior Notes, due 2048	600,000				600,000
Unsecured 4.125% Senior Notes, due 2049	450,000				450,000
Unsecured 3.375% Senior Notes, due 2049	500,000				—
Floating-rate term loan, due 2022	200,000				—
Medium term Series A notes, 1995-1, 6.67%, due 2025	10,000				10,000
Unsecured 6.75% Debentures, due 2028	150,000				150,000
Finance lease obligations (see Note 6)	8,631				—
Total long-term debt	4,568,631				3,560,000
Less:
Net original issue (premium) / discount on unsecured senior notes and debentures	583				193
Debt issuance cost	36,104				30,355
Current maturities	165				—
	$	4,531,779			$	3,529,452

Maturities of long-term debt, excluding our finance lease obligations, at September 30, 2020 were as follows (in thousands):

2021	$	—
2022	200,000
2023	—
2024	—
2025	10,000
Thereafter	4,350,000
	$	4,560,000

On October 1, 2020, we completed a public offering of $600 million of 1.50% senior notes due 2031. The net proceeds from the offering, after the underwriting discount and estimated offering expenses, of $592.5 million, were used for general corporate purposes, including the repayment of working capital borrowings pursuant to our commercial paper program and the related settlement of our interest rate swaps. The effective interest rate on these notes is 1.71%, after giving effect to the offering costs.

On April 9, 2020, we entered into a two year, $200 million term loan agreement that bears interest at a rate of LIBOR plus 1.25 percent. The term loan was used to pay down borrowings pursuant to our commercial paper program.

On October 2, 2019, we completed a public offering of $300 million of 2.625% senior notes due 2029 and $500 million of 3.375% senior notes due 2049. We received net proceeds from the offering, after the underwriting discount and offering expenses, of $791.7 million, that were used for general corporate purposes, including the repayment of working capital

ATMOS ENERGY CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

borrowings pursuant to our commercial paper program. The effective interest rate on these notes was 2.72% and 3.42%, after giving effect to the offering costs.

Short-term Debt

We utilize short-term debt to provide cost-effective, short-term financing until it can be replaced with a balance of long-term debt and equity financing that achieves the Company’s desired capital structure with an equity-to-capitalization ratio between 50% and 60%, inclusive of long-term and short-term debt. Our short-term borrowing requirements are driven primarily by construction work in progress and the seasonal nature of the natural gas business. Changes in the price of natural gas and the amount of natural gas we need to supply our customers’ needs could significantly affect our borrowing requirements. Our short-term borrowings typically reach their highest levels in the winter months.

As of September 30, 2020, our short-term borrowing requirements were satisfied through a combination of a $1.5 billion commercial paper program and four committed revolving credit facilities with third-party lenders that provide $2.2 billion of total working capital funding.

The primary source of our funding is our commercial paper program, which is supported by a five-year unsecured $1.5 billion credit facility that expires on September 25, 2023. The facility bears interest at a base rate or at a LIBOR-based rate for the applicable interest period, plus a margin ranging from zero percent to 1.25 percent, based on the Company’s credit ratings. Additionally, the facility contains a $250 million accordion feature, which provides the opportunity to increase the total committed loan to $1.75 billion. At September 30, 2020, there were no amounts outstanding under our commercial paper program. At September 30, 2019, a total of $464.9 million was outstanding with weighted average interest rates of 2.24% and weighted average maturities of less than one month.

Additionally, we had a $25 million 364-day unsecured facility that was renewed on April 1, 2020 and increased to $50 million, which is used to provide working capital funding. There were no borrowings outstanding under this facility as of September 30, 2020.

Finally, we had a $10 million 364-day unsecured revolving credit facility, which was replaced on April 30, 2020, with a new $50 million 364-day unsecured revolving credit facility, which is used to issue letters of credit and to provide working capital funding. At September 30, 2020, there were no borrowings outstanding under the new facility; however, outstanding letters of credit reduced the total amount available to us under our $50 million unsecured revolving facility to $44.4 million.

On April 23, 2020, we executed a new $600 million 364-day unsecured revolving credit facility to provide additional working capital funding. The facility bears interest at a base rate or at a LIBOR-based rate for the applicable interest period, plus a margin ranging from zero percent to 1.25 percent, based on the Company's credit ratings. At September 30, 2020, there were no borrowings outstanding under this facility.

Debt Covenants

The availability of funds under these credit facilities is subject to conditions specified in the respective credit agreements, all of which we currently satisfy. These conditions include our compliance with financial covenants and the continued accuracy of representations and warranties contained in these agreements. We are required by the financial covenants in each of these facilities to maintain, at the end of each fiscal quarter, a ratio of total-debt-to-total-capitalization of no greater than 70 percent. At September 30, 2020, our total-debt-to-total-capitalization ratio, as defined, was 42 percent. In addition, both the interest margin and the fee that we pay on unused amounts under each of these facilities are subject to adjustment depending upon our credit ratings.

These credit facilities and our public indentures contain usual and customary covenants for our business, including covenants substantially limiting liens, substantial asset sales and mergers. Additionally, our public debt indentures relating to our senior notes and debentures, as well as certain of our revolving credit agreements, each contain a default provision that is triggered if outstanding indebtedness arising out of any other credit agreements in amounts ranging from in excess of $15 million to in excess of $100 million becomes due by acceleration or is not paid at maturity. We were in compliance with all of our debt covenants as of September 30, 2020. If we were unable to comply with our debt covenants, we would likely be required to repay our outstanding balances on demand, provide additional collateral or take other corrective actions.

8**. Shareholders' Equity**

Shelf Registration, At-the-Market Equity Sales Program and Equity Issuances

On February 11, 2020, we filed a shelf registration statement with the Securities and Exchange Commission (SEC) that allows us to issue up to $4.0 billion in common stock and/or debt securities, which expires February 11, 2023. This shelf registration statement replaced our previous shelf registration statement which was filed on November 13, 2018 (2018 Registration Statement). At September 30, 2020, approximately $3.0 billion of securities remained available for issuance under

ATMOS ENERGY CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

the shelf registration statement. Following the completion of the $600 million senior unsecured note offering on October 1, 2020 (see Note 7), approximately $2.4 billion of securities remained available for issuance under the shelf registration statement.

On February 12, 2020, we filed a prospectus supplement under the shelf registration statement relating to an at-the-market (ATM) equity sales program (February 2020 ATM) under which we may issue and sell shares of our common stock up to an aggregate offering price of $1.0 billion (including shares of common stock that may be sold pursuant to forward sale agreements entered into concurrently with the ATM equity sales program). This ATM equity sales program replaced our previous ATM equity sales program, filed on November 19, 2018 (November 2018 ATM), which was exhausted during the second quarter of fiscal 2020.

During the year ended September 30, 2020, we executed forward sales under the February 2020 ATM and the November 2018 ATM equity sales programs with various forward sellers who borrowed and sold 4,808,051 shares of our common stock for $523.2 million. Additionally, during the year ended September 30, 2020, we settled forward sale agreements with respect to 5,616,727 shares that had been borrowed and sold by various forward sellers under the November 2018 ATM and the February 2020 ATM for net proceeds of $581.5 million. As of September 30, 2020, the February 2020 ATM program had approximately $552 million of equity available for issuance.

On November 30, 2018, we filed a prospectus supplement under the registration statement relating to an underwriting agreement to sell 5,390,836 shares of our common stock for $500 million. After expenses, net proceeds from the offering were $494.1 million. Concurrently, we entered into separate forward sale agreements with two forward sellers who borrowed and sold 2,668,464 shares of our common stock for $247.5 million. During the year ended September 30, 2019, we settled forward sale agreements with respect to 2,183,275 of the shares that had been borrowed and sold for net proceeds of $200.0 million. During the year ended September 30, 2020, we settled the remaining 485,189 shares for net proceeds of $44.4 million.

During the year ended September 30, 2019, we executed forward sales under the November 2018 ATM with various forward sellers who borrowed and sold 4,144,671 shares of our common stock at an aggregate price of $425.0 million.

If we had settled all shares that remain available under our outstanding forward sale agreements as of September 30, 2020, we would have received proceeds of $345.2 million, based on a net price of $103.48 per share. Additional details are presented below.

Maturity	Shares Available		Net Proceeds Available (In Thousands)				Forward Price
March 31, 2021	1,281,578		$	134,660			$	105.07
June 30, 2021	1,394,423		142,388				$	102.11
September 30, 2021	659,994		68,158				$	103.27
Total	3,335,995		$	345,206

Accumulated Other Comprehensive Income (Loss)

We record deferred gains (losses) in accumulated other comprehensive income (AOCI) related to available-for-sale debt securities and interest rate agreement cash flow hedges. Deferred gains (losses) for our available-for-sale debt securities are recognized in earnings upon settlement, while deferred gains (losses) related to our interest rate agreement cash flow hedges are recognized in earnings as a component of interest charges, as they are amortized. The following tables provide the components of our accumulated other comprehensive income (loss) balances, net of the related tax effects allocated to each component of other comprehensive income (loss).

	Available- for-Sale Securities				Interest Rate Agreement Cash Flow Hedges				Total
	(In thousands)
September 30, 2019	$	132			$	(114,715	)		$	(114,583	)
Other comprehensive income before reclassifications	108				53,241				53,349
Amounts reclassified from accumulated other comprehensive income	(2		)		3,647				3,645
Net current-period other comprehensive income	106				56,888				56,994
September 30, 2020	$	238			$	(57,827	)		$	(57,589	)

ATMOS ENERGY CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

	Available- for-Sale Securities				Interest Rate Agreement Cash Flow Hedges				Total
	(In thousands)
September 30, 2018	$	8,124			$	(91,771	)		$	(83,647	)
Other comprehensive income (loss) before reclassifications	219				(25,966		)		(25,747		)
Amounts reclassified from accumulated other comprehensive income	(1		)		3,022				3,021
Net current-period other comprehensive income (loss)	218				(22,944		)		(22,726		)
Cumulative effect of accounting change	(8,210		)		—				(8,210		)
September 30, 2019	$	132			$	(114,715	)		$	(114,583	)

9**. Retirement and Post-Retirement Employee Benefit Plans**

We have both funded and unfunded noncontributory defined benefit plans that together cover most of our employees. We also maintain post-retirement plans that provide health care benefits to retired employees. Finally, we sponsor a defined contribution plan that covers substantially all employees. These plans are discussed in further detail below.

As a rate regulated entity, most of our net periodic pension and other postretirement benefits costs are recoverable through our rates over a period of up to 15 years. A portion of these costs is capitalized into our rate base or deferred as a regulatory asset or liability. The remaining costs are recorded as a component of operation and maintenance expense or other non-operating expense. Additionally, the amounts that have not yet been recognized in net periodic pension cost that have been recorded as regulatory assets or liabilities are as follows:

	Defined Benefit Plan				Supplemental Executive Retirement Plans				Postretirement Plans				Total
	(In thousands)
September 30, 2020
Unrecognized prior service (credit) cost	$	(584	)		$	—			$	951			$	367
Unrecognized actuarial loss	78,082				51,045				9,110				138,237
	$	77,498			$	51,045			$	10,061			$	138,604
September 30, 2019
Unrecognized prior service (credit) cost	$	(815	)		$	—			$	1,125			$	310
Unrecognized actuarial (gain) loss	67,191				56,784				(43,782		)		80,193
	$	66,376			$	56,784			$	(42,657	)		$	80,503

Defined Benefit Plans

Employee Pension Plan

As of September 30, 2020, we maintained one cash balance defined benefit plan, the Atmos Energy Corporation Pension Account Plan (the Plan). The Plan was established effective January 1999 and covers most of the employees of Atmos Energy that were hired on or before September 30, 2010. Effective October 1, 2010, the plan was closed to new participants. The assets of the Plan are held within the Atmos Energy Corporation Master Retirement Trust (the Master Trust).

Opening account balances were established for participants as of January 1999 equal to the present value of their respective accrued benefits under the pension plans which were previously in effect as of December 31, 1998. The Plan credits an allocation to each participant’s account at the end of each year according to a formula based on the participant’s age, service and total pay (excluding incentive pay). In addition, at the end of each year, a participant’s account is credited with interest on the employee’s prior year account balance. Participants are fully vested in their account balances after three years of service and may choose to receive their account balances as a lump sum or an annuity.

Generally, our funding policy is to contribute annually an amount in accordance with the requirements of the Employee Retirement Income Security Act of 1974, including the funding requirements under the Pension Protection Act of 2006 (PPA). However, additional voluntary contributions are made from time to time as considered necessary. Contributions are intended to provide not only for benefits attributed to service to date but also for those expected to be earned in the future.

ATMOS ENERGY CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

During fiscal 2020, we did not make a contribution to the Plan. During fiscal 2019 we contributed $8.5 million in cash to the Plan to achieve a desired level of funding while maximizing the tax deductibility of this payment. Based upon market conditions at September 30, 2020, the current funded position of the Plan and the funding requirements under the PPA, we do not anticipate a minimum required contribution for fiscal 2021. However, we may consider whether a voluntary contribution is prudent to maintain certain funding levels.

We make investment decisions and evaluate performance of the assets in the Master Trust on a medium-term horizon of at least three to five years. We also consider our current financial status when making recommendations and decisions regarding the Master Trust’s assets. Finally, we strive to ensure the Master Trust’s assets are appropriately invested to maintain an acceptable level of risk and meet the Master Trust’s long-term asset investment policy adopted by the Board of Directors.

To achieve these objectives, we invest the Master Trust’s assets in equity securities, fixed income securities, interests in commingled pension trust funds, other investment assets and cash and cash equivalents. Investments in equity securities are diversified among the market’s various subsectors in an effort to diversify risk and maximize returns. Fixed income securities are invested in investment grade securities. Cash equivalents are invested in securities that either are short term (less than 180 days) or readily convertible to cash with modest risk.

The following table presents asset allocation information for the Master Trust as of September 30, 2020 and 2019.

	Targeted Allocation Range		Actual Allocation September 30
Security Class	2020		2019
Domestic equities	35%-55%		45.3%		40.6%
International equities	10%-20%		15.6%		14.5%
Fixed income	5%-30%		17.0%		18.8%
Company stock	0%-15%		13.0%		15.4%
Other assets	0%-20%		9.1%		10.7%

At September 30, 2020 and 2019, the Plan held 716,700 shares of our common stock which represented 13.0 percent and 15.4 percent of total Plan assets. These shares generated dividend income for the Plan of approximately $1.6 million and $1.5 million during fiscal 2020 and 2019.

Our employee pension plan expenses and liabilities are determined on an actuarial basis and are affected by numerous assumptions and estimates including the market value of plan assets, estimates of the expected return on plan assets and assumed discount rates and demographic data. We review the estimates and assumptions underlying our employee pension plans annually based upon a September 30 measurement date. The development of our assumptions is fully described in our significant accounting policies in Note 2. The actuarial assumptions used to determine the pension liability for the Plan was determined as of September 30, 2020 and 2019 and the actuarial assumptions used to determine the net periodic pension cost for the Plan was determined as of September 30, 2019, 2018 and 2017. On October 21, 2020, the Society of Actuaries released its annually-updated mortality improvement scale for pension plans incorporating new assumptions surrounding life expectancies in the United States. As of September 30, 2020, we updated our assumed mortality rates to incorporate the updated mortality table.

Additional assumptions are presented in the following table:

	Pension Liability						Pension Cost
	2020			2019			2020			2019			2018
Discount rate	2.80	%		3.29	%		3.29	%		4.38	%		3.89	%
Rate of compensation increase	3.50	%		3.50	%		3.50	%		3.50	%		3.50	%
Expected return on plan assets	6.25	%		6.50	%		6.50	%		6.75	%		6.75	%
Interest crediting rate	4.69	%		4.69	%		4.69	%		4.69	%		4.69	%

ATMOS ENERGY CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

The following table presents the Plan’s accumulated benefit obligation, projected benefit obligation and funded status as of September 30, 2020 and 2019:

	2020				2019
	(In thousands)
Accumulated benefit obligation	$	565,755			$	541,287
Change in projected benefit obligation:
Benefit obligation at beginning of year	$	577,270			$	504,719
Service cost	17,551				15,311
Interest cost	19,028				22,071
Actuarial (gain) loss	22,898				71,139
Benefits paid	(32,526		)		(35,970		)
Benefit obligation at end of year	604,221				577,270
Change in plan assets:
Fair value of plan assets at beginning of year	530,109				531,691
Actual return on plan assets	31,298				25,888
Employer contributions	—				8,500
Benefits paid	(32,526		)		(35,970		)
Fair value of plan assets at end of year	528,881				530,109
Reconciliation:
Funded status	(75,340		)		(47,161		)
Unrecognized prior service cost	—				—
Unrecognized net loss	—				—
Net amount recognized	$	(75,340	)		$	(47,161	)

Net periodic pension cost for the Plan for fiscal 2020, 2019 and 2018 is presented in the following table.

	Fiscal Year Ended September 30
	2020				2019				2018
	(In thousands)
Components of net periodic pension cost:
Service cost	$	17,551			$	15,311			$	17,264
Interest cost(1)	19,028				22,071				20,803
Expected return on assets(1)	(28,316		)		(28,451		)		(27,666		)
Amortization of prior service credit(1)	(231		)		(232		)		(231		)
Recognized actuarial loss(1)	9,025				4,201				9,114
Net periodic pension cost	$	17,057			$	12,900			$	19,284

(1)	The components of net periodic cost other than the service cost component are included in the line item other non-operating income (expense) in the consolidated statements of comprehensive income or are capitalized on the consolidated balance sheets as a regulatory asset or liability, as described in Note 2.

ATMOS ENERGY CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

The following tables set forth by level, within the fair value hierarchy, the Plan's assets at fair value as of September 30, 2020 and 2019. As required by authoritative accounting literature, assets are categorized in their entirety based on the lowest level of input that is significant to the fair value measurement. The methods used to determine fair value for the assets held by the Plan are fully described in Note 2. Investments in our common/collective trusts and limited partnerships that are measured at net asset value per share equivalent are not classified in the fair value hierarchy. The net asset value amounts presented are intended to reconcile the fair value hierarchy to the total investments. In addition to the assets shown below, the Plan had net accounts receivable of $0.7 million and $1.3 million at September 30, 2020 and 2019, which materially approximates fair value due to the short-term nature of these assets.

	Assets at Fair Value as of September 30, 2020
	Level 1				Level 2				Level 3				Total
	(In thousands)
Investments:
Common stocks	$	211,244			$	—			$	—			$	211,244
Money market funds	—				6,096				—				6,096
Registered investment companies	29,762				—				—				29,762
Government securities:
Mortgage-backed securities	—				15,230				—				15,230
U.S. treasuries	21,755				36				—				21,791
Corporate bonds	—				52,648				—				52,648
Total investments measured at fair value	$	262,761			$	74,010			$	—			336,771
Investments measured at net asset value:
Common/collective trusts (1)													122,207
Limited partnerships (1)													69,176
Total investments													$	528,154

	Assets at Fair Value as of September 30, 2019
	Level 1				Level 2				Level 3				Total
	(In thousands)
Investments:
Common stocks	$	212,785			$	—			$	—			$	212,785
Money market funds	—				16,419				—				16,419
Registered investment companies	26,326				—				—				26,326
Government securities:
Mortgage-backed securities	—				19,986				—				19,986
U.S. treasuries	22,930				885				—				23,815
Corporate bonds	—				55,774				—				55,774
Total investments measured at fair value	$	262,041			$	93,064			$	—			355,105
Investments measured at net asset value:
Common/collective trusts (1)													108,975
Limited partnerships (1)													64,718
Total investments													$	528,798

(1)	The fair value of our common/collective trusts and limited partnerships are measured using the net asset value per share practical expedient. There are no redemption restrictions, redemption notice periods or unfunded commitments for these investments. The redemption frequency is daily.

Supplemental Executive Retirement Plans

We have three nonqualified supplemental plans which provide additional pension, disability and death benefits to our officers, division presidents and certain other employees of the Company.

ATMOS ENERGY CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

The first plan is referred to as the Supplemental Executive Benefits Plan (SEBP) and covers our corporate officers and certain other employees of the Company who were employed on or before August 12, 1998. The SEBP is a defined benefit arrangement which provides a benefit equal to 75 percent of covered compensation under which benefits paid from the underlying qualified defined benefit plan are an offset to the benefits under the SEBP.

In August 1998, we adopted the Supplemental Executive Retirement Plan (SERP) (formerly known as the Performance-Based Supplemental Executive Benefits Plan), which covers all corporate officers selected to participate in the plan between August 12, 1998 and August 5, 2009. The SERP is a defined benefit arrangement which provides a benefit equal to 60 percent of covered compensation under which benefits paid from the underlying qualified defined benefit plan are an offset to the benefits under the SERP.

Effective August 5, 2009, we adopted a new defined benefit Supplemental Executive Retirement Plan (the 2009 SERP), for corporate officers or any other employees selected at the discretion of the Board. Under the 2009 SERP, a nominal account has been established for each participant, to which the Company contributes at the end of each calendar year an amount equal to ten percent (25 percent for members of the Management Committee appointed on or after January 1, 2016) of the total of each participant’s base salary and cash incentive compensation earned during each prior calendar year, beginning December 31, 2009. The benefits vest after three years of service and attainment of age 55 and earn interest credits at the same annual rate as the Company’s Pension Account Plan.

Due to the retirement of an executive of the company during fiscal 2020, we recognized a one-time settlement charge of $9.2 million and paid a $22.7 million lump sum in relation to the retirement.

Similar to our employee pension plans, we review the estimates and assumptions underlying our supplemental plans annually based upon a September 30 measurement date using the same techniques as our employee pension plans. The actuarial assumptions used to determine the pension liability for the supplemental plans were determined as of September 30, 2020 and 2019 and the actuarial assumptions used to determine the net periodic pension cost for the supplemental plans were determined as of September 30, 2019, 2018 and 2017. These assumptions are presented in the following table:

	Pension Liability						Pension Cost
	2020			2019			2020			2019			2018
Discount rate(1)	2.80	%		3.29	%		3.19	%		4.38	%		4.08	%
Rate of compensation increase	3.50	%		3.50	%		3.50	%		3.50	%		3.50	%
Interest crediting rate	4.69	%		4.69	%		4.69	%		4.69	%		4.69	%

(1)	Reflects a weighted average discount rate for pension cost for fiscal 2020 and 2018 due to the settlements during the year.

ATMOS ENERGY CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

The following table presents the supplemental plans’ accumulated benefit obligation, projected benefit obligation and funded status as of September 30, 2020 and 2019:

	2020				2019
	(In thousands)
Accumulated benefit obligation	$	122,207			$	138,772
Change in projected benefit obligation:
Benefit obligation at beginning of year	$	143,987			$	121,370
Service cost	1,074				869
Interest cost	4,188				5,127
Actuarial (gain) loss	7,386				25,099
Benefits paid	(4,766		)		(8,478		)
Settlements	(22,729		)		—
Benefit obligation at end of year	129,140				143,987
Change in plan assets:
Fair value of plan assets at beginning of year	—				—
Employer contribution	27,495				8,478
Benefits paid	(4,766		)		(8,478		)
Settlements	(22,729		)		—
Fair value of plan assets at end of year	—				—
Reconciliation:
Funded status	(129,140		)		(143,987		)
Unrecognized prior service cost	—				—
Unrecognized net loss	—				—
Accrued pension cost	$	(129,140	)		$	(143,987	)

Assets for the supplemental plans are held in separate rabbi trusts. At September 30, 2020 and 2019, assets held in the rabbi trusts consisted of equity securities of $41.9 million and $44.0 million, which are included in our fair value disclosures in Note 15.

Net periodic pension cost for the supplemental plans for fiscal 2020, 2019 and 2018 is presented in the following table.

	Fiscal Year Ended September 30
	2020				2019				2018
	(In thousands)
Components of net periodic pension cost:
Service cost	$	1,074			$	869			$	1,332
Interest cost(1)	4,188				5,127				4,988
Recognized actuarial loss(1)	3,945				2,227				3,079
Settlements(1)	9,180				—				4,159
Net periodic pension cost	$	18,387			$	8,223			$	13,558

(1)	The components of net periodic cost other than the service cost component are included in the line item other non-operating income (expense) in the consolidated statements of comprehensive income or are capitalized on the consolidated balance sheets as a regulatory asset or liability, as described in Note 2.

ATMOS ENERGY CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Estimated Future Benefit Payments

The following benefit payments for our defined benefit plans, which reflect expected future service, as appropriate, are expected to be paid in the following fiscal years:

	Pension Plan				Supplemental Plans
	(In thousands)
2021	$	37,523			$	30,021
2022	37,804				17,117
2023	39,053				5,124
2024	40,036				4,472
2025	41,016				32,550
2026-2030	204,582				22,308

Postretirement Benefits

We sponsor the Retiree Medical Plan for Retirees and Disabled Employees of Atmos Energy Corporation (the Atmos Retiree Medical Plan). This plan provides medical and prescription drug protection to all qualified participants based on their date of retirement. The Atmos Retiree Medical Plan provides different levels of benefits depending on the level of coverage chosen by the participants and the terms of predecessor plans; however, we generally pay 80 percent of the projected net claims and administrative costs and participants pay the remaining 20 percent. Effective January 1, 2015, for employees who had not met the participation requirements by September 30, 2009, the contribution rates for the Company are limited to a three percent cost increase in claims and administrative costs each year, with the participant responsible for the additional costs.

Generally, our funding policy is to contribute annually an amount in accordance with the requirements of ERISA. However, additional voluntary contributions are made annually as considered necessary. Contributions are intended to provide not only for benefits attributed to service to date but also for those expected to be earned in the future. We expect to contribute between $15 million and $25 million to our postretirement benefits plan during fiscal 2021.

We maintain a formal investment policy with respect to the assets in our postretirement benefits plan to ensure the assets funding the postretirement benefit plan are appropriately invested to maintain an acceptable level of risk. We also consider our current financial status when making recommendations and decisions regarding the postretirement benefits plan.

We currently invest the assets funding our postretirement benefit plan in diversified investment funds which consist of common stocks, preferred stocks and fixed income securities. The diversified investment funds may invest up to 75 percent of assets in common stocks and convertible securities. The following table presents asset allocation information for the postretirement benefit plan assets as of September 30, 2020 and 2019.

	Actual Allocation September 30
Security Class	2020		2019
Diversified investment funds	97.4%		97.1%
Cash and cash equivalents	2.6%		2.9%

Similar to our employee pension and supplemental plans, we review the estimates and assumptions underlying our postretirement benefit plan annually based upon a September 30 measurement date using the same techniques as our employee pension plans. The actuarial assumptions used to determine the pension liability for our postretirement plan were determined as of September 30, 2020 and 2019 and the actuarial assumptions used to determine the net periodic pension cost for the postretirement plan were determined as of September 30, 2019, 2018 and 2017.

ATMOS ENERGY CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

The assumptions are presented in the following table:

	Postretirement Liability						Postretirement Cost
	2020			2019			2020			2019			2018
Discount rate	2.80	%		3.29	%		3.29	%		4.38	%		3.89	%
Expected return on plan assets	4.94	%		5.14	%		5.14	%		5.33	%		4.29	%
Initial trend rate	6.25	%		6.25	%		6.25	%		6.50	%		7.00	%
Ultimate trend rate	5.00	%		5.00	%		5.00	%		5.00	%		5.00	%
Ultimate trend reached in	2026			2025			2025			2022			2022

The following table presents the postretirement plan’s benefit obligation and funded status as of September 30, 2020 and 2019:

	2020				2019
	(In thousands)
Change in benefit obligation:
Benefit obligation at beginning of year	$	316,033			$	265,986
Service cost	13,466				10,810
Interest cost	10,612				11,839
Plan participants’ contributions	5,849				5,901
Actuarial (gain) loss	43,412				39,472
Benefits paid	(18,694		)		(17,975		)
Benefit obligation at end of year	370,678				316,033
Change in plan assets:
Fair value of plan assets at beginning of year	201,901				199,361
Actual return on plan assets	2,356				1,125
Employer contributions	16,833				13,489
Plan participants’ contributions	5,849				5,901
Benefits paid	(18,694		)		(17,975		)
Fair value of plan assets at end of year	208,245				201,901
Reconciliation:
Funded status	(162,433		)		(114,132		)
Unrecognized transition obligation	—				—
Unrecognized prior service cost	—				—
Unrecognized net loss	—				—
Accrued postretirement cost	$	(162,433	)		$	(114,132	)

ATMOS ENERGY CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Net periodic postretirement cost for fiscal 2020, 2019 and 2018 is presented in the following table.

	Fiscal Year Ended September 30
	2020				2019				2018
	(In thousands)
Components of net periodic postretirement cost:
Service cost	$	13,466			$	10,810			$	12,078
Interest cost(1)	10,612				11,839				10,907
Expected return on assets(1)	(10,499		)		(10,659		)		(8,006		)
Amortization of transition obligation(1)	—				—				—
Amortization of prior service cost (credit)(1)	173				173				11
Recognized actuarial gain(1)	(1,337		)		(8,178		)		(6,473		)
Net periodic postretirement cost	$	12,415			$	3,985			$	8,517

(1)	The components of net periodic cost other than the service cost component are included in the line item other non-operating income (expense) in the consolidated statements of comprehensive income or are capitalized on the consolidated balance sheets as a regulatory asset or liability, as described in Note 2.

We are currently recovering other postretirement benefits costs through our regulated rates in substantially all of our service areas under accrual accounting as prescribed by accounting principles generally accepted in the United States. Other postretirement benefits costs have been specifically addressed in rate orders in each jurisdiction served by our Kentucky/Mid-States, West Texas, Mid-Tex and Mississippi Divisions as well as our Kansas jurisdiction and APT or have been included in a rate case and not disallowed. Management believes that this accounting method is appropriate and will continue to seek rate recovery of accrual-based expenses in its ratemaking jurisdictions that have not yet approved the recovery of these expenses.

The following tables set forth by level, within the fair value hierarchy, the Retiree Medical Plan’s assets at fair value as of September 30, 2020 and 2019. The methods used to determine fair value for the assets held by the Retiree Medical Plan are fully described in Note 2.

	Assets at Fair Value as of September 30, 2020
	Level 1				Level 2				Level 3				Total
	(In thousands)
Investments:
Money market funds	$	—			$	5,525			$	—			$	5,525
Registered investment companies	202,720				—				—				202,720
Total investments measured at fair value	$	202,720			$	5,525			$	—			$	208,245

	Assets at Fair Value as of September 30, 2019
	Level 1				Level 2				Level 3				Total
	(In thousands)
Investments:
Money market funds	$	—			$	5,972			$	—			$	5,972
Registered investment companies	195,929				—				—				195,929
Total investments measured at fair value	$	195,929			$	5,972			$	—			$	201,901

ATMOS ENERGY CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Estimated Future Benefit Payments

The following benefit payments paid by us, retirees and prescription drug subsidy payments for our postretirement benefit plans, which reflect expected future service, as appropriate, are expected to be paid in the following fiscal years. Company payments for fiscal 2020 include contributions to our postretirement plan trusts.

	Company Payments				Retiree Payments				Subsidy Payments				Total Postretirement Benefits
	(In thousands)
2021	$	22,632			$	4,368			$	—			$	27,000
2022	16,263				4,772				—				21,035
2023	16,590				5,144				—				21,734
2024	17,517				5,651				—				23,168
2025	18,353				6,104				—				24,457
2026-2030	101,158				35,039				—				136,197

Defined Contribution Plan

The Atmos Energy Corporation Retirement Savings Plan and Trust (the Retirement Savings Plan) covers substantially all employees and is subject to the provisions of Section 401(k) of the Internal Revenue Code. Effective January 1, 2007, employees automatically become participants of the Retirement Savings Plan on the date of employment. Participants may elect a salary reduction up to a maximum of 65 percent of eligible compensation, as defined by the Plan, not to exceed the maximum allowed by the Internal Revenue Service. New participants are automatically enrolled in the Plan at a contribution rate of four percent of eligible compensation, from which they may opt out. We match 100 percent of a participant’s contributions, limited to four percent of the participant’s salary. Participants are eligible to receive matching contributions after completing one year of service, in which they are immediately vested. Effective January 1, 2021, participants are eligible to receive matching contributions immediately upon enrollment in the Retirement Savings Plan. This matching contribution vests after completing one year of service. Participants are also permitted to take out a loan against their accounts subject to certain restrictions. Employees hired on or after October 1, 2010 participate in the enhanced plan in which participants receive a fixed annual contribution of four percent of eligible earnings to their Retirement Savings Plan account. Participants will continue to be eligible for company matching contributions of up to four percent of their eligible earnings and will be fully vested in the fixed annual contribution after three years of service.

Matching and fixed annual contributions to the Retirement Savings Plan are expensed as incurred and amounted to $17.9 million, $16.7 million and $16.2 million for fiscal years 2020, 2019 and 2018. At September 30, 2020 and 2019, the Retirement Savings Plan held 2.2 percent and 2.6 percent of our outstanding common stock.

10**. Stock and Other Compensation Plans**

Stock-Based Compensation Plans

Total stock-based compensation cost was $21.1 million, $23.9 million and $23.9 million for the fiscal years ended September 30, 2020, 2019 and 2018. Of this amount, $11.6 million, $12.8 million and $11.1 million was capitalized.

1998 Long-Term Incentive Plan

We have the 1998 Long-Term Incentive Plan (LTIP), which provides a comprehensive, long-term incentive compensation plan providing for discretionary awards of incentive stock options, non-qualified stock options, stock appreciation rights, bonus stock, time-lapse restricted stock, time-lapse restricted stock units, performance-based restricted stock units and stock units to certain employees and non-employee directors of the Company and our subsidiaries. The objectives of this plan include attracting and retaining the best available personnel, providing for additional performance incentives and promoting our success by providing employees with the opportunity to acquire common stock.

We were originally authorized to grant awards up to a maximum cumulative amount of 11.2 million shares of common stock under this plan subject to certain adjustment provisions. As of September 30, 2020, non-qualified stock options, bonus stock, time-lapse restricted stock, time-lapse restricted stock units, performance-based restricted stock units and stock units had been issued under this plan, and 1.3 million shares are available for future issuance through September 30, 2021.

ATMOS ENERGY CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Restricted Stock Units Award Grants

As noted above, the LTIP provides for discretionary awards of restricted stock units to help attract, retain and reward employees of Atmos Energy and its subsidiaries. Certain of these awards vest based upon the passage of time and other awards vest based upon the passage of time and the achievement of specified performance targets. The fair value of the awards granted is based on the market price of our stock at the date of grant. We estimate forfeitures using our historical forfeiture rate. The associated expense is recognized ratably over the vesting period. We use authorized and unissued shares to meet share requirements for the vesting of restricted stock units.

Employees who are granted time-lapse restricted stock units under our LTIP have a nonforfeitable right to dividend equivalents that are paid at the same rate and at the same time at which they are paid on shares of stock without restrictions. Time-lapse restricted stock units contain only a service condition that the employee recipients render continuous services to the Company for a period of three years from the date of grant, except for accelerated vesting in the event of death, disability, change of control of the Company or termination without cause (with certain exceptions). There are no performance conditions required to be met for employees to be vested in time-lapse restricted stock units.

Employees who are granted performance-based restricted stock units under our LTIP have a forfeitable right to dividend equivalents that accrue at the same rate at which they are paid on shares of stock without restrictions. Dividend equivalents on the performance-based restricted stock units are paid either in cash or in the form of shares upon the vesting of the award. Performance-based restricted stock units contain a service condition that the employee recipients render continuous services to the Company for a period of three years from the beginning of the applicable three-year performance period, except for accelerated vesting in the event of death, disability, change of control of the Company or termination without cause (with certain exceptions) and a performance condition based on a cumulative earnings per share target amount.

The following summarizes information regarding the restricted stock units granted under the plan during the fiscal years ended September 30, 2020, 2019 and 2018:

	2020							2019							2018
	Number of Restricted Units			Weighted Average Grant-Date Fair Value				Number of Restricted Units			Weighted Average Grant-Date Fair Value				Number of Restricted Units			Weighted Average Grant-Date Fair Value
Nonvested at beginning of year	503,072			$	91.66			538,592			$	80.91			570,814			$	69.45
Granted	199,985			102.34				241,472			98.25				248,710			85.62
Vested	(242,975	)		85.66				(269,347	)		76.71				(274,392	)		64.43
Forfeited	(16,803	)		96.87				(7,645	)		86.37				(6,540	)		74.87
Nonvested at end of year	443,279			$	99.28			503,072			$	91.66			538,592			$	80.91

As of September 30, 2020, there was $13.0 million of total unrecognized compensation cost related to nonvested restricted stock units granted under the LTIP. That cost is expected to be recognized over a weighted average period of 1.5 years. The fair value of restricted stock vested during the fiscal years ended September 30, 2020, 2019 and 2018 was $20.7 million, $20.5 million and $17.2 million.

Other Plans

Direct Stock Purchase Plan

We maintain a Direct Stock Purchase Plan, open to all investors, which allows participants to have all or part of their cash dividends paid quarterly in additional shares of our common stock. The minimum initial investment required to join the plan is $1,250. Direct Stock Purchase Plan participants may purchase additional shares of our common stock as often as weekly with voluntary cash payments of at least $25, up to an annual maximum of $100,000.

Equity Incentive and Deferred Compensation Plan for Non-Employee Directors

We have an Equity Incentive and Deferred Compensation Plan for Non–Employee Directors, which provides non-employee directors of Atmos Energy with the opportunity to defer receipt, until retirement, of compensation for services rendered to the Company and invest deferred compensation into either a cash account or a stock account.

Other Discretionary Compensation Plans

We have an annual incentive program covering substantially all employees to give each employee an opportunity to share in our financial success based on the achievement of key performance measures considered critical to achieving business

ATMOS ENERGY CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

objectives for a given year with minimum and maximum thresholds. The Company must meet the minimum threshold for the plan to be funded and distributed to employees. These performance measures may include earnings growth objectives, improved cash flow objectives or crucial customer satisfaction and safety results. We monitor progress towards the achievement of the performance measures throughout the year and record accruals based upon the expected payout using the best estimates available at the time the accrual is recorded. During the last several fiscal years, we have used earnings per share as our sole performance measure.

11. Details of Selected Financial Statement Captions

The following tables provide additional information regarding the composition of certain financial statement captions.

Balance Sheet

Accounts receivable

Accounts receivable was comprised of the following at September 30, 2020 and 2019:

	September 30
	2020				2019
	(In thousands)
Billed accounts receivable	$	140,259			$	126,984
Unbilled revenue	80,699				78,986
Contributions in aid of construction receivable	19,821				22,378
Other accounts receivable	19,765				18,122
Total accounts receivable	260,544				246,470
Less: allowance for doubtful accounts	(29,949		)		(15,899		)
Net accounts receivable	$	230,595			$	230,571

Other current assets

Other current assets as of September 30, 2020 and 2019 were comprised of the following accounts.

	September 30
	2020				2019
	(In thousands)
Deferred gas costs	$	40,593			$	23,766
Prepaid expenses	40,340				38,895
Materials and supplies	6,829				5,916
Assets from risk management activities	5,687				1,586
Other	14,456				2,609
Total	$	107,905			$	72,772

ATMOS ENERGY CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Property, plant and equipment

Property, plant and equipment was comprised of the following as of September 30, 2020 and 2019:

	September 30
	2020				2019
	(In thousands)
Storage plant	$	530,985			$	431,286
Transmission plant	3,459,765				3,157,316
Distribution plant	10,680,495				9,333,011
General plant	829,624				799,095
Intangible plant	38,297				38,191
	15,539,166				13,758,899
Construction in progress	418,055				421,694
	15,957,221				14,180,593
Less: accumulated depreciation and amortization	(2,601,874		)		(2,392,924		)
Net property, plant and equipment(1)	$	13,355,347			$	11,787,669

(1)	Net property, plant and equipment includes plant acquisition adjustments of $(37.8) million and $(46.7) million at September 30, 2020 and 2019.

Goodwill

The following presents our goodwill balance allocated by segment and changes in the balance for the fiscal year ended September 30, 2020:

	Distribution				Pipeline and Storage				Total
	(In thousands)
Balance as of September 30, 2019	$	587,604			$	143,102			$	730,706
Deferred tax adjustments on prior acquisitions(1)	(768		)		1,319				551
Balance as of September 30, 2020	$	586,836			$	144,421			$	731,257

(1)	We annually adjust certain deferred taxes recorded in connection with an acquisition completed in fiscal 2005, which resulted in an increase to goodwill and net deferred tax liabilities of $0.6 million for fiscal 2020.

Deferred charges and other assets

Deferred charges and other assets as of September 30, 2020 and 2019 were comprised of the following accounts.

	September 30
	2020				2019
	(In thousands)
Marketable securities	$	103,952			$	101,883
Regulatory assets (See Note 2)	371,707				260,220
Operating lease right of use assets (See Note 6)	227,146				—
Assets from risk management activities	74,991				225
Tax receivable	—				10,099
Other	23,374				18,786
Total	$	801,170			$	391,213

ATMOS ENERGY CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Accounts payable and accrued liabilities

Accounts payable and accrued liabilities as of September 30, 2020 and 2019 were comprised of the following accounts.

	September 30
	2020				2019
	(In thousands)
Trade accounts payable	$	141,075			$	176,581
Accrued gas payable	42,054				36,817
Accrued liabilities	52,646				51,626
Total	$	235,775			$	265,024

Other current liabilities

Other current liabilities as of September 30, 2020 and 2019 were comprised of the following accounts.

	September 30
	2020				2019
	(In thousands)
Customer credit balances and deposits	$	56,485			$	54,617
Accrued employee costs	57,057				55,216
Deferred gas costs	19,985				14,112
Operating lease liabilities (See Note 6)	35,716				—
Accrued interest	53,554				51,381
Liabilities from risk management activities	2,015				4,552
Taxes payable	148,292				135,597
Pension and postretirement liabilities	29,609				26,197
Regulatory cost of service reserve	1,716				4,209
Regulatory cost of removal obligation	73,908				55,721
APT annual adjustment mechanism	43,893				52,856
Regulatory excess deferred taxes (See Note 13)	20,887				21,206
Other	3,344				3,837
Total	$	546,461			$	479,501

Deferred credits and other liabilities

Deferred credits and other liabilities as of September 30, 2020 and 2019 were comprised of the following accounts.

	September 30
	2020				2019
	(In thousands)
Pension and post retirement liabilities	$	337,303			$	279,083
Operating lease liabilities (See Note 6)	201,071				—
Customer advances for construction	10,060				12,566
Other regulatory liabilities (See Note 2)	17,838				16,120
Asset retirement obligation	20,348				17,054
Liabilities from risk management activities	—				1,249
APT annual adjustment mechanism	13,486				25,545
Unrecognized tax benefits	30,921				27,716
Other	11,101				20,883
Total	$	642,128			$	400,216

ATMOS ENERGY CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Statement of Comprehensive Income

Other non-operating income (expense)

Other non-operating income (expense) for the fiscal years ended September 30, 2020, 2019 and 2018 were comprised of the following accounts.

	Year Ended September 30
	2020				2019				2018
	(In thousands)
Equity component of AFUDC	$	23,493			$	11,165			$	—
Performance-based rate program	6,771				6,737				6,745
Pension and other postretirement non-service credit (cost)	(3,189		)		3,016				(5,770		)
Interest income	2,932				4,160				1,450
Community support spending	(11,728		)		(4,771		)		(6,053		)
Miscellaneous	(11,108		)		(12,903		)		(6,516		)
Total	$	7,171			$	7,404			$	(10,144	)

Statement of Cash Flows

Supplemental disclosures of cash flow information for the fiscal years ended September 30, 2020, 2019 and 2018 were as follows:

	Year Ended September 30
	2020				2019				2018
	(In thousands)
Cash Paid (Received) During The Period For:
Interest(1)	$	194,993			$	184,852			$	169,987
Income taxes	$	(3,071	)		$	11,467			$	6,102
Non-Cash Transactions:
Capital expenditures included in current liabilities	$	113,365			$	149,993			$	112,211

(1) Cash paid during the period for interest, net of amounts capitalized was $82.3 million, $91.3 million and $106.8 million for the fiscal years ended September 30, 2020, 2019 and 2018.

12**. Commitments and Contingencies**

Litigation and Environmental Matters

In the normal course of business, we are subject to various legal and regulatory proceedings. For such matters, we record liabilities when they are considered probable and estimable, based on currently available facts, our historical experience and our estimates of the ultimate outcome or resolution of the liability in the future. While the outcome of these proceedings is uncertain and a loss in excess of the amount we have accrued is possible though not reasonably estimable, it is the opinion of management that any amounts exceeding the accruals will not have a material adverse impact on our financial position, results of operations or cash flows.

We maintain liability insurance for various risks associated with the operation of our natural gas pipelines and facilities, including for property damage and bodily injury. These liability insurance policies generally require us to be responsible for the first $1.0 million (self-insured retention) of each incident.

The National Transportation Safety Board (NTSB) is investigating an incident that occurred at a Dallas, Texas residence on February 23, 2018 that resulted in one fatality and injuries to four other residents. Together with the Railroad Commission of Texas (RRC) and the Pipeline and Hazardous Materials Safety Administration (PHMSA), Atmos Energy is a party to the investigation and in that capacity is working closely with the NTSB to help determine the cause of this incident.

We are a party to various other litigation and environmental-related matters or claims that have arisen in the ordinary course of our business. While the results of such litigation and response actions to such environmental-related matters or claims

ATMOS ENERGY CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

cannot be predicted with certainty, we continue to believe the final outcome of such litigation and matters or claims will not have a material adverse effect on our financial condition, results of operations or cash flows.

Purchase Commitments

Our distribution divisions maintain supply contracts with several vendors that generally cover a period of up to one year. Commitments for estimated base gas volumes are established under these contracts on a monthly basis at contractually negotiated prices. Commitments for incremental daily purchases are made as necessary during the month in accordance with the terms of the individual contract.

Our Mid-Tex Division also maintains a limited number of long-term supply contracts to ensure a reliable source of gas for our customers in its service area, which obligate it to purchase specified volumes at prices indexed to natural gas trading hubs. At September 30, 2020, we were committed to purchase 59.3 Bcf within one year, 57.0 Bcf within two to three years and 0.1 Bcf beyond three years under indexed contracts. Purchases under these contracts totaled $58.5 million, $50.8 million and $57.2 million for 2020, 2019 and 2018.

Rate Regulatory Proceedings

As of September 30, 2020, routine rate regulatory proceedings were in progress in some of our service areas, which are discussed in further detail above in the Business — Ratemaking Activity section.

13**. Income Taxes**

Income Tax Expense

The components of income tax expense from continuing operations for 2020, 2019 and 2018 were as follows:

	2020				2019				2018
	(In thousands)
Current
Federal	$	—			$	—			$	(10,099	)
State	14,193				8,412				11,075
Deferred
Federal	143,039				113,331				150,556
State (1)	(11,879		)		17,160				15,330
TCJA Impact	—				—				(158,782		)
Income tax expense	$	145,353			$	138,903			$	8,080

(1)	Includes a non-cash income tax benefit of $21.0 million resulting from the remeasurement of the rate at which state deferred taxes will reverse in the future as discussed below.

Reconciliations of the provision for income taxes computed at the statutory rate to the reported provisions for income taxes from continuing operations for 2020, 2019 and 2018 are set forth below:

	2020				2019				2018
	(In thousands)
Tax at statutory rate(1)	$	156,827			$	136,565			$	149,730
Common stock dividends deductible for tax reporting	(1,419		)		(1,460		)		(1,745		)
State taxes (net of federal benefit)	22,791				20,202				19,826
Amortization of excess deferred taxes	(16,125		)		(14,085		)		(1,219		)
Remeasurement due to TCJA	—				—				(158,782		)
Remeasurement due to state deferred tax rate change	(20,962		)		—				—
Other, net	4,241				(2,319		)		270
Income tax expense	$	145,353			$	138,903			$	8,080

(1)	Tax expense is calculated at the statutory federal income tax rate of 21.0%, 21.0%, 24.5% for the year ended September 30, 2020, 2019 and 2018.

ATMOS ENERGY CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Deferred income taxes reflect the tax effect of differences between the basis of assets and liabilities for book and tax purposes. The tax effect of temporary differences that gave rise to significant components of the deferred tax liabilities and deferred tax assets at September 30, 2020 and 2019 are presented below:

	2020				2019
	(In thousands)
Deferred tax assets:
Employee benefit plans	$	66,991			$	70,929
Interest rate swaps	16,719				33,918
Net operating loss carryforwards	476,507				485,133
Charitable and other credit carryforwards	8,712				8,241
Regulatory excess deferred tax	161,565				165,701
Other	73,542				13,186
Total deferred tax assets	804,036				777,108
Valuation allowance	(1,102		)		(1,894		)
Net deferred tax assets	802,934				775,214
Deferred tax liabilities:
Difference in net book value and net tax value of assets(1)	(2,138,966		)		(2,004,516		)
Pension funding	(484		)		(4,384		)
Gas cost adjustments	(23,209		)		(18,072		)
Other	(96,844		)		(48,257		)
Total deferred tax liabilities	(2,259,503		)		(2,075,229		)
Net deferred tax liabilities	$	(1,456,569	)		$	(1,300,015	)
Deferred credits for rate regulated entities	$	2,537			$	2,582

(1) Includes $129.0 million and $131.0 million of deferred tax liability related to goodwill as of September 30, 2020 and 2019.

At September 30, 2020, we had $446.9 million (tax effected) of federal net operating loss carryforwards. The federal net operating loss carryforwards are available to offset taxable income and will begin to expire in 2029. The Company also had $10.1 million of federal alternative minimum tax credit carryforwards as of September 30, 2019, which did not expire and were fully refunded to us during fiscal 2020. In addition, the Company has $6.9 million in charitable contribution carryforwards to offset future taxable income. The Company’s charitable contribution carryforwards expiration period begins in fiscal 2021.

The Company also has $29.6 million (tax effected) of state net operating loss carryforwards (net of $7.9 million of federal effects) and $1.8 million of state tax credits carryforwards (net of $0.5 million of federal effects). Depending on the jurisdiction in which the state net operating loss was generated, the carryforwards expiration period begins in fiscal 2021.

We believe it is more likely than not that the benefit from certain state net operating loss carryforwards and state credit carryforwards will not be realized. Due to the uncertainty of realizing a benefit from the deferred tax asset recorded for the carryforwards, a valuation allowance of $1.1 million was established for the year ended September 30, 2020.

At September 30, 2020, we had recorded liabilities associated with unrecognized tax benefits totaling $30.9 million. The following table reconciles the beginning and ending balance of our unrecognized tax benefits:

	2020				2019				2018
	(In thousands)
Unrecognized tax benefits - beginning balance	$	27,716			$	26,203			$	23,719
Increase (decrease) resulting from prior period tax positions	(26		)		(923		)		22
Increase resulting from current period tax positions	3,231				2,436				2,462
Unrecognized tax benefits - ending balance	30,921				27,716				26,203
Less: deferred federal and state income tax benefits	(6,493		)		(5,820		)		(5,503		)
Total unrecognized tax benefits that, if recognized, would impact the effective income tax rate as of the end of the year	$	24,428			$	21,896			$	20,700

ATMOS ENERGY CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

The Company recognizes interest accrued related to unrecognized tax benefits in interest expense and penalties included within interest charges in our consolidated statements of comprehensive income. During the years ended September 30, 2020, 2019 and 2018, the Company recognized approximately $0.7 million, $2.2 million and $1.6 million in interest and penalties. The Company had approximately $8.2 million, $7.9 million and $6.1 million for the payment of interest and penalties accrued at September 30, 2020, 2019 and 2018.

We file income tax returns in the U.S. federal jurisdiction as well as in various states where we have operations. We have concluded substantially all U.S. federal income tax matters through fiscal year 2009 and concluded substantially all Texas income tax matters through fiscal year 2010.

On March 27, 2020, the Coronavirus Aid, Relief, and Economic Security Act (the “CARES Act”) was signed into law. The CARES Act, among other things, includes provisions relating to refundable payroll tax credits, deferment of employer side social security payments, net operating loss carryback periods, alternative minimum tax credit refunds, modifications to the net interest deduction limitations and technical corrections to tax depreciation methods for qualified improvement property. The CARES Act did not have an impact on our consolidated financial statements for the year ended September 30, 2020.

Excess Deferred Taxes

On June 1, 2020, the Kansas legislature passed House Bill 2585 which eliminated the assessment of state income taxes on regulated utilities. This legislation was effective for the Company on October 1, 2020. Due to the change in the Kansas state tax law and the result of a study to estimate the rate at which state deferred taxes will reverse in the future, we reduced our deferred tax liability by $32.5 million during the fiscal third quarter of 2020. We established a $12.1 million regulatory liability for excess deferred taxes that will be returned to Kansas customers. We are currently working with the Kansas Corporation Commission to determine the amortization period for this liability. We recognized a $21.0 million income tax benefit in our consolidated statement of comprehensive income for the year ended September 30, 2020.

On December 22, 2017, the Tax Cuts and Jobs Act of 2017 (the "TCJA") was signed into law. As a result of the implementation of the TCJA, we recognized a $158.8 million income tax benefit in our consolidated statement of comprehensive income for the year ended September 30, 2018 related to a change in deferred taxes that were not related to our cost of service ratemaking. The change in deferred taxes related to our cost of service ratemaking (referred to as excess deferred taxes) was reclassified into a regulatory liability and as approved by our regulators, will be returned to ratepayers on a provisional basis over periods ranging from 15 to 46 years. As of September 30, 2020 and 2019, this liability totaled $706.7 million and $726.3 million.

During fiscal 2019, we received approval from regulators to update our cost of service rates to reflect the decrease in the statutory income tax rate in all of our service areas. Additionally, as of September 30, 2020, we have returned the separate regulatory liability to customers in substantially all of our service areas for the difference in taxes included in our rates that were calculated based on a 35% statutory income tax rate until new rates could be established based on the new 21% statutory income tax rate.

14**. Financial Instruments**

We currently use financial instruments to mitigate commodity price risk and to mitigate interest rate risk. Our financial instruments do not contain any credit-risk-related or other contingent features that could cause accelerated payments when our financial instruments are in net liability positions.

As discussed in Note 2, we report our financial instruments as risk management assets and liabilities, each of which is classified as current or noncurrent based upon the anticipated settlement date of the underlying financial instrument. The following table shows the fair values of our risk management assets and liabilities at September 30, 2020 and 2019.

	September 30
	2020				2019
	(In thousands)
Assets from risk management activities, current	$	5,687			$	1,586
Assets from risk management activities, noncurrent	74,991				225
Liabilities from risk management activities, current	(2,015		)		(4,552		)
Liabilities from risk management activities, noncurrent	—				(1,249		)
Net assets (liabilities)	$	78,663			$	(3,990	)

ATMOS ENERGY CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Commodity Risk Management Activities

Our purchased gas cost adjustment mechanisms essentially insulate our distribution segment from commodity price risk; however, our customers are exposed to the effects of volatile natural gas prices. We manage this exposure through a combination of physical storage, fixed-price forward contracts and financial instruments, primarily over-the-counter swap and option contracts, in an effort to minimize the impact of natural gas price volatility on our customers during the winter heating season.

In jurisdictions where we are permitted to mitigate commodity price risk through financial instruments, the relevant regulatory authorities may establish the level of heating season gas purchases that can be hedged. Our distribution gas supply department is responsible for executing this segment’s commodity risk management activities in conformity with regulatory requirements. Historically, if the regulatory authority does not establish this level, we seek to hedge between 25 and 50 percent of anticipated heating season gas purchases using financial instruments. For the 2019-2020 heating season (generally October through March), in the jurisdictions where we are permitted to utilize financial instruments, we hedged approximately 49 percent, or approximately 19.9 Bcf of the winter flowing gas requirements at a weighted average cost of approximately $2.84 per Mcf. We have not designated these financial instruments as hedges for accounting purposes.

Interest Rate Risk Management Activities

In fiscal 2020, we entered into forward starting interest rate swaps to effectively fix the Treasury yield component associated with $500 million of a planned issuance of unsecured senior notes in fiscal 2021 at 0.69%; these swaps were settled in September 2020 with a net payment of $4.4 million. On October 1, 2020, the notes were issued as planned.

Additionally, in fiscal 2020, we entered into forward starting interest rate swaps to effectively fix the Treasury yield component associated with $450 million of a planned issuance of unsecured senior notes in fiscal 2022 at 1.33%, $300 million of a planned issuance of unsecured senior notes in fiscal 2023 at 1.36% and $300 million of a planned issuance of unsecured senior notes in fiscal 2025 at 1.35%, which we designated as cash flow hedges at the time the agreements were executed.

Quantitative Disclosures Related to Financial Instruments

The following tables present detailed information concerning the impact of financial instruments on our consolidated balance sheet and statements of comprehensive income.

As of September 30, 2020, our financial instruments were comprised of both long and short commodity positions. A long position is a contract to purchase the commodity, while a short position is a contract to sell the commodity. As of September 30, 2020, we had 18,191 MMcf of net long commodity contracts outstanding. These contracts have not been designated as hedges.

ATMOS ENERGY CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Financial Instruments on the Balance Sheet

The following tables present the fair value and balance sheet classification of our financial instruments as of September 30, 2020 and 2019. The gross amounts of recognized assets and liabilities are netted within our consolidated balance sheets to the extent that we have netting arrangements with the counterparties. However, as of September 30, 2020 and 2019, no gross amounts and no cash collateral were netted within our consolidated balance sheet.

	Balance Sheet Location		Assets				Liabilities
			(In thousands)
September 30, 2020
Designated As Hedges:
Interest rate contracts	Deferred charges and other assets / Deferred credits and other liabilities		$	73,055			$	—
Total			73,055				—
Not Designated As Hedges:
Commodity contracts	Other current assets / Other current liabilities		5,687				(2,015		)
Commodity contracts	Deferred charges and other assets / Deferred credits and other liabilities		1,936				—
Total			7,623				(2,015		)
Gross / Net Financial Instruments			$	80,678			$	(2,015	)

	Balance Sheet Location		Assets				Liabilities
			(In thousands)
September 30, 2019
Not Designated As Hedges:
Commodity contracts	Other current assets / Other current liabilities		$	1,586			$	(4,552	)
Commodity contracts	Deferred charges and other assets / Deferred credits and other liabilities		225				(1,249		)
Total			1,811				(5,801		)
Gross / Net Financial Instruments			$	1,811			$	(5,801	)

Impact of Financial Instruments on the Statement of Comprehensive Income

Cash Flow Hedges

As discussed above, the interest rate agreements we executed in prior years were designated as cash flow hedges when those agreements were executed. The net loss on settled interest rate agreements reclassified from AOCI into interest charges on our consolidated statements of comprehensive income for the years ended September 30, 2020, 2019 and 2018 was $5.5 million, $3.9 million and $2.4 million.

ATMOS ENERGY CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

The following table summarizes the gains and losses arising from hedging transactions that were recognized as a component of other comprehensive income (loss), for the years ended September 30, 2020 and 2019. The amounts included in the table below exclude gains and losses arising from ineffectiveness because these amounts are immediately recognized in the statement of comprehensive income as incurred.

	Fiscal Year Ended September 30
	2020				2019
	(In thousands)
Increase (decrease) in fair value:
Interest rate agreements	$	53,241			$	(25,966	)
Recognition of losses in earnings due to settlements:
Interest rate agreements	3,647				3,022
Total other comprehensive income (loss) from hedging, net of tax	$	56,888			$	(22,944	)

Deferred gains (losses) recorded in AOCI associated with our interest rate agreements are recognized in earnings as they are amortized over the terms of the underlying debt instruments. As of September 30, 2020, we had $114.5 million of net realized losses in AOCI associated with our interest rate agreements. The following amounts, net of deferred taxes, represent the expected recognition in earnings of the deferred net losses recorded in AOCI associated with our interest rate agreements, based upon the fair values of these agreements at the date of settlement. The remaining amortization periods for these settled amounts extend through fiscal 2049. However, the table below does not include the expected recognition in earnings of our outstanding interest rate agreements as those financial instruments have not yet settled.

	Interest Rate Agreements
	(In thousands)
2021	$	(4,569	)
2022	(4,569		)
2023	(4,569		)
2024	(4,569		)
2025	(4,569		)
Thereafter	(91,657		)
Total	$	(114,502	)

Financial Instruments Not Designated as Hedges

As discussed above, commodity contracts which are used in our distribution segment are not designated as hedges. However, there is no earnings impact on our distribution segment as a result of the use of these financial instruments because the gains and losses arising from the use of these financial instruments are recognized in the consolidated statements of comprehensive income as a component of purchased gas cost when the related costs are recovered through our rates and recognized in revenue. Accordingly, the impact of these financial instruments is excluded from this presentation.

15**. Fair Value Measurements**

We report certain assets and liabilities 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 (exit price). We record cash and cash equivalents, accounts receivable and accounts payable at carrying value, which substantially approximates fair value due to the short-term nature of these assets and liabilities. For other financial assets and liabilities, we primarily use quoted market prices and other observable market pricing information to minimize the use of unobservable pricing inputs in our measurements when determining fair value. The methods used to determine fair value for our assets and liabilities are fully described in Note 2.

Fair value measurements also apply to the valuation of our pension and post-retirement plan assets. The fair value of these assets is presented in Note 9.

ATMOS ENERGY CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Quantitative Disclosures

Financial Instruments

The classification of our fair value measurements requires judgment regarding the degree to which market data are observable or corroborated by observable market data. The following tables summarize, by level within the fair value hierarchy, our assets and liabilities that were accounted for at fair value on a recurring basis as of September 30, 2020 and 2019. As required under authoritative accounting literature, assets and liabilities are categorized in their entirety based on the lowest level of input that is significant to the fair value measurement.

	Quoted Prices in Active Markets (Level 1)				Significant Other Observable Inputs (Level 2)****(1)				Significant Other Unobservable Inputs (Level 3)				Netting and Cash Collateral				September 30, 2020
	(In thousands)
Assets:
Financial instruments	$	—			$	80,678			$	—			$	—			$	80,678
Debt and equity securities
Registered investment companies	37,831				—				—				—				37,831
Bond mutual funds	29,166				—				—				—				29,166
Bonds(2)	—				32,900				—				—				32,900
Money market funds	—				4,055				—				—				4,055
Total debt and equity securities	66,997				36,955				—				—				103,952
Total assets	$	66,997			$	117,633			$	—			$	—			$	184,630
Liabilities:
Financial instruments	$	—			$	2,015			$	—			$	—			$	2,015

	Quoted Prices in Active Markets (Level 1)				Significant Other Observable Inputs (Level 2)****(1)				Significant Other Unobservable Inputs (Level 3)				Netting and Cash Collateral				September 30, 2019
	(In thousands)
Assets:
Financial instruments	$	—			$	1,811			$	—			$	—			$	1,811
Debt and equity securities
Registered investment companies	41,406				—				—				—				41,406
Bond mutual funds	25,966				—				—				—				25,966
Bonds(2)	—				31,915				—				—				31,915
Money market funds	—				2,596				—				—				2,596
Total debt and equity securities	67,372				34,511				—				—				101,883
Total assets	$	67,372			$	36,322			$	—			$	—			$	103,694
Liabilities:
Financial instruments	$	—			$	5,801			$	—			$	—			$	5,801

(1)

Our Level 2 measurements consist of over-the-counter options and swaps, which are valued using a market-based approach in which observable market prices are adjusted for criteria specific to each instrument, such as the strike price, notional amount or basis differences, municipal and corporate bonds, which are valued based on the most recent available quoted market prices and money market funds which are valued at cost.

(2)	Our investments in bonds are considered available-for-sale debt securities in accordance with current accounting guidance.

At September 30, 2020 and 2019, the amortized cost of our available-for-sale debt securities was $32.6 million and $31.7 million. At September 30, 2020 we maintained investments in bonds that have contractual maturity dates ranging from October 2020 through May 2023.

ATMOS ENERGY CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Other Fair Value Measures

In addition to the financial instruments above, we have several financial and nonfinancial assets and liabilities subject to fair value measures. These financial assets and liabilities include cash and cash equivalents, accounts receivable, accounts payable and debt, which are recorded at carrying value. The nonfinancial assets and liabilities include asset retirement obligations and pension and post-retirement plan assets. For cash and cash equivalents, accounts receivable and accounts payable, we consider carrying value to materially approximate fair value due to the short-term nature of these assets and liabilities.

Our long-term debt is recorded at carrying value. The fair value of our long-term debt, excluding finance leases, is determined using third party market value quotations, which are considered Level 1 fair value measurements for debt instruments with a recent, observable trade or Level 2 fair value measurements for debt instruments where fair value is determined using the most recent available quoted market price. The carrying value of our finance leases materially approximates fair value. The following table presents the carrying value and fair value of our long-term debt, excluding finances leases, debt issuance costs and original issue premium or discount, as of September 30, 2020:

	September 30, 2020
	(In thousands)
Carrying Amount	$	4,560,000
Fair Value	$	5,597,183

16**. Concentration of Credit Risk**

Credit risk is the risk of financial loss to us if a customer fails to perform its contractual obligations. We engage in transactions for the purchase and sale of products and services with major companies in the energy industry and with industrial, commercial, residential and municipal energy consumers. These transactions principally occur in the southern and midwestern regions of the United States. We believe that this geographic concentration does not contribute significantly to our overall exposure to credit risk. Credit risk associated with trade accounts receivable for the distribution segment is mitigated by the large number of individual customers and the diversity in our customer base. The credit risk for our other segment is not significant.

17. Selected Quarterly Financial Data (Unaudited)

Summarized unaudited quarterly financial data is presented below. The sum of net income per share by quarter may not equal the net income per share for the fiscal year due to variations in the weighted average shares outstanding used in computing such amounts. Our businesses are seasonal due to weather conditions in our service areas. For further information on its effects on quarterly results, see the “Results of Operations” discussion included in the “Management’s Discussion and Analysis of Financial Condition and Results of Operations” section herein.

	Quarter Ended
	December 31				March 31				June 30				September 30
	(In thousands, except per share data)
Fiscal year 2020:
Operating revenues
Distribution	$	828,504			$	933,005			$	435,308			$	430,176
Pipeline and storage	148,176				146,237				158,008				156,918
Intersegment eliminations	(101,117		)		(101,577		)		(100,321		)		(112,180		)
Total operating revenues	875,563				977,665				492,995				474,914
Purchased gas cost	296,868				317,883				26,072				18,031
Operating income	252,781				331,438				139,035				100,845
Net Income	178,673				239,646				117,791				65,333
Basic net income per share	$	1.47			$	1.95			$	0.96			$	0.53
Diluted net income per share	$	1.47			$	1.95			$	0.96			$	0.53

ATMOS ENERGY CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

	Quarter Ended
	December 31				March 31				June 30				September 30
	(In thousands, except per share data)
Fiscal year 2019:
Operating revenues
Distribution	$	838,835			$	1,057,889			$	444,944			$	403,793
Pipeline and storage	134,470				135,650				149,198				147,706
Intersegment eliminations	(95,523		)		(98,894		)		(108,404		)		(107,816		)
Total operating revenues	877,782				1,094,645				485,738				443,683
Purchased gas cost	342,165				471,676				31,326				13,670
Operating income	236,464				297,677				122,202				89,715
Net Income	157,646				214,888				80,466				58,406
Basic net income per share	$	1.38			$	1.83			$	0.68			$	0.49
Diluted net income per share	$	1.38			$	1.82			$	0.68			$	0.49