2023 ANNUAL REPORT Atmos Energy at a Glance We safely deliver reliable and efficient natural gas to homes, businesses, and industries to fuel our energy needs now and in the future. Colorado-Kansas Division Denver, CO Atmos Energy Corporation Headquarters, Dallas, TX Mississippi Division Flowood, MS Kentucky/Mid-States Division Franklin, TN Natural gas distribution areas Proprietary storage Division offices Major gas delivery hubs Waha Hub West Texas Division Lubbock, TX Carthage Hub Louisiana Division Baton Rouge, LA Katy Hub Mid-Tex Division Atmos Pipeline-Texas Division Dallas, TX Financial Highlights 3 million+ Regulated distribution assets in eight states serving > 3 million customers. $17 billion Projected capital expenditures of about $17 billion through fiscal 2028; over 85% spent on safety and reliability. 90% | 99% Earning on about 90% of annual capital expenditures within 6 months and on 99% within 12 months. 6% to 8% 6% to 8% forecasted earnings and dividends per share growth through fiscal 2028. 21 | 39 years 21 consecutive years of annual EPS growth; 39 consecutive years of annual dividend growth. Letter To Our Stakeholders A Message from Leadership In fiscal 2023, we continued to execute our proven investment strategy of operating safely and reliably while we modernize our natural gas distribution, transmission, and storage systems. In fiscal 2023, we continued executing upon our proven strategy of operating safely and reliably while we modernize our natural gas distribution, transmission, and storage systems. Our service territory continues to be supported by robust customer growth, economic development, and strong demand for natural gas. In fiscal 2023, we added approximately 61,000 new residential customers, nearly 3,000 commercial customers and 55 industrial customers. We invested $2.8 billion in fiscal 2023 with approximately 85 percent of that capital investment dedicated to safety and reliability projects. Financial Performance Earnings per diluted share for fiscal 2023 rose for the twenty- first consecutive year to $6.10, which was an 8.9 percent increase over fiscal 2022. Net income was $886 million, with our distribution operations representing 66 percent of our business. During fiscal 2023, we implemented $269 million in annualized operating income increases and completed approximately $1.6 billion of debt and equity financing that we used to support our capital spending program and maintain our financial profile. We finished the fiscal year with a very strong financial position with total available liquidity of $2.7 billion and an equity capitalization of 61.5 percent. Fueling Safe and Thriving Communities Our Fueling Safe and Thriving Communities program focuses on three essential pillars: fueling bright minds and healthy futures for our kids; fueling honor and thanks for our community heroes; and fueling hope and growth for our neighbors. During fiscal 2023, employees continued to make a difference in the lives of others by supporting schools and students with books, meals, and snacks, honoring healthcare workers and first responders by supporting more than 1,400 non-profits dedicated to helping others, and by providing nearly 6 million meals for our neighbors in need through our financial and volunteer efforts with over 200 local food banks. We continued to partner with local Habitat for Humanity organizations to provide families with Zero Net Energy (ZNE) homes. These homes are designed to produce more energy than they consume through the use of high-efficiency natural gas appliances, rooftop solar panels and advanced insulation materials. We completed 2 new ZNE homes in Atmos Energy 2023 Annual Report 1 This year marked the 40th anniversary of Atmos Energy, the company founded by Charles K. Vaughan in 1983. All of us at Atmos Energy, 5,000 employees and nearly 3,000 retirees, are grateful for Mr. Vaughan’s vision and determination for Atmos Energy to be successful while deeply caring for our employees. Over that forty-year period, Atmos Energy has grown through acquisitions and become an industry leader in operations, customer service and community support through the effort, focus and dedication of our employees. Our journey has been supported by our culture, AtmoSpirit, whose guiding principles: Inspire Trust, Be at Your Best, Bring Out the Best in Others, Make a Difference and Focus on the Future serve to reflect our shared beliefs and behaviors. As we Build Upon the Past and Focus On the Future, our journey will always be guided by the simple values Charlie envisioned for Atmos Energy: “honesty, integrity and good moral character.” 40 Years of Atmos Energy Over the last 40 years, Atmos Energy has grown from a spinoff of Pioneer Gas with approximately 280,000 customers to become the nation's largest natural-gas-only distributor with over 3 million customers and the operator of one of the largest intrastate pipelines in Texas. This transformation was made possible by the vision and determination of the Company's founder, Charles K. Vaughan, and by the leaders that followed him. Mr. Vaughan, Bob Best and Kim Cocklin each brought their unique brand of leadership and strategy to Atmos Energy, which has allowed us to remain independent and prosperous. As we look forward, our continued success will be guided by the simple values laid out by Mr. Vaughan: honesty, integrity and good moral character, and supported by our culture AtmoSpirit and the dedication of our 5,000 employees. Letter To Our Stakeholders fiscal 2023 and have now completed 12 ZNE homes over the last two years. These homes demonstrate the value and vital role natural gas plays in helping customers reduce their carbon footprint in a cost-effective manner. Altogether, in 2023, through outreach, education, and communication with community action agencies, nonprofits, and customers, Atmos Energy helped more than 61,000 households gain access to approximately $29 million through LIHEAP, Sharing the Warmth, and other programs. Outlook As we look ahead to fiscal 2024, our vision and our strategy remains unchanged as safety is the highest priority for Atmos Energy. We will continue to invest in our business by modernizing our distribution, transmission, and underground storage systems as we modernize our business systems and processes. Our capital spending for fiscal 2024 is forecasted to be approximately $2.9 billion and we expect capital expenditures through fiscal 2028 to be about $17 billion. Our total rate base is expected to grow from approximately $17 billion at the end of fiscal 2023 to between $28 billion and $30 billion by the end of fiscal 2028. This rate base growth supports annual earnings per diluted share and dividends per share growth of 6 percent to 8 percent through fiscal 2028. Our guidance for earnings per diluted share in fiscal 2024 ranges between $6.45 and $6.65 Focusing on long-term sustainability has always been a part of our strategy and is reflected in the vital role we play in every community: safely delivering reliable and efficient natural gas to homes, businesses, and industries to fuel our energy needs now and in the future. I am very excited about the direction and long-term sustainability of Atmos Energy. J. KEVIN AKERS President and Chief Executive Officer November 14, 2023 2 Atmos Energy 40 Years of Atmos Energy Together We’re Going to Make This Company Grow Charles K. Vaughan was named president of the Energas Company division of Pioneer Natural Gas in 1981 after a career spanning 24 years at the company and ranging from chief clerk in the Pampa office to manager in Dalhart and roles in Amarillo ranging from special assistant to the division manager to northern division manager. “I worked in just about every job in many of our local offices,” said Charlie. By 1981, Pioneer Corporation had diversified into oil and gas drilling, heavy machinery, nuclear fuel, even a tire retreading company. The company wanted to be a dynamic conglomerate and was looking to divest in the utility business, a business that seemed dull by comparison. About two weeks before spinning off the utility on October 18, 1983, Charlie was told he was going to be the independent company’s chairman, president, and CEO. “I was scared to death,” recalled Charlie. “I had never led a board of directors or appeared before security analysts.” Charles K. Vaughan announces spinoff Atmos Energy 2023 Annual Report 3 Pioneer had spun off Energas with few resources and no outside directors, but had obligated the company to pay its shareholders a cash dividend of 40 cents a share within 90 days after the spinoff. “We didn’t have any cash or any idea how we were going to pay the dividend,” Charlie said. Pioneer Corporation didn’t give Energas much sustenance — or much of a chance of surviving. Yet, hard work and dedication by Charlie and Energas’ employees paid off after the coldest winter in 50 years hit West Texas in November 1983. Charlie was able to announce a sizable profit for the company’s first full year of operations at the annual meeting of shareholders. “We made more money than we knew what to do with,” Charlie remembered. “We paid that first dividend, and then we paid off our debt.” Energas now had the financial position it needed to survive. After passing Energas’ first major test, the next challenge was to rally employees concerned about their future. “I got in my car and drove to every office and met with every single employee I could,” Charlie remembered. “I told them that – together – we’re going to make this company grow. We weren’t going to just sit still and wait to fail. If they would stick with the company’s management and support us, we’ll sink or swim together!” Energas employees did just that. Charlie realized that the company had to grow to remain independent and to prosper for shareholders and employees. Pioneer had retained the largest and most profitable gas customers, leaving Energas the residential and commercial accounts. Internal growth in these markets was slim to none. With coaching from the board, Charlie decided to expand the company outside Texas. His offer to buy Trans Louisiana Gas Company marked a business milestone – the first hostile takeover attempt in the utility industry. Eventually the TransLa deal became friendly, and it gave Energas diversified operations in a different market, with a different climate, different customers, and different state regulators. “We had to buy something or be bought. Had we not gotten aggressive, we would not have survived two years,” recalled Charlie. Charlie’s initial goal for Energas was to simply survive; yet he set the path for the company to not only survive, but to diversify widely and grow spectacularly. 4 Atmos Energy Charles K. Vaughan presents the Energas logo Energas logo on side of facility Trans Louisiana Gas logo Charles K. Vaughan with Western Kentucky Gas Company employees Atmos Energy corporate headquarters in Dallas, TX To direct Energas’ expanding operations and to prepare for future acquisitions, Charlie decided to move the company headquarters to Dallas, a more central location. He chose Dallas for its equal proximity to the Energas and TransLa division headquarters, convenient airports, access to data processing and telecommunications resources, and competitive office space. Energas would then go on to acquire Western Kentucky Gas Company in 1987. This acquisition added more diversification and industrial customers, such as General Motors’ Corvette assembly plant in Bowling Green. Charlie believed that a new corporate name and logo were needed so consultants at The Richards Group created 100 choices. “We wanted a new name that was generic and tied to the energy industry... We also wanted the name to be easy to pronounce and to have five letters or fewer, so that the entire name would be listed in capital letters in the daily stock quotes,” Charlie said. After considering the choices, he announced the winner: Atmos Energy. “The neat thing about Atmos is it means gases in the atmosphere in the Greek language,” said Charlie. The corporation changed its name on October 1, 1988. Charlie and Barbara tour the NYSE floor To attract the attention of the financial community and raise more capital for further expansion, Charlie moved the company’s stock listing to the New York Stock Exchange. On October 3, 1988, he and his wife, Barbara, toured the NYSE floor, and Charlie bought the first share of Atmos Energy Corporation common stock. The acquisition of Greeley Gas Company in 1993 would add Colorado and Kansas to the Atmos Energy footprint and the 1997 merger with United Cities Gas Company added about 350,000 customers in eight states of the Southeast and Midwest and marked the milestone of Atmos Energy serving one million gas customers. Atmos Energy 2023 Annual Report 5 40 Years of Atmos Energy Culture Drives Everything Robert W. Best was handpicked by Charlie to succeed him as Atmos Energy’s chairman of the board, president, and chief executive officer. Always a long-range planner, Charlie had begun preparing in the mid-1990s for his retirement from executive management. With Atmos Energy now serving one million natural gas customers, it required a proven leader, one who could take the business to new levels while sustaining the financial prosperity and independence Charlie had achieved. “Hiring Bob Best was the ‘best’ decision I ever made,” said Charlie During Bob’s tenure, he would oversee six major acquisitions, including the 2004 acquiring of TXU Gas Company which nearly doubled Atmos Energy’s size. He would also become known for improving customer service, putting in new customer support systems, building a world class technical training center, and setting up a community foundation. Bob Best, 1997 Bob Best preparing for an employee broadcast, 2003 6 Atmos Energy Another important milestone in Bob’s tenure was the opening of the Charles K. Vaughan center in Plano, Texas in 2010. The center is a company-wide beacon for the highest standards of work quality, customer service and, most of all, safety. The center contains the best-in-class technical training facility in the natural gas industry where employees can learn and practice the skills they will use on the job every day. The center also houses a major Operations center that serves customers in North Dallas, Plano, Richardson, and other North Texas communities as well as a twenty-four hour dispatching center that dispatches service orders across the eight states. The Charles K. Vaughan center stands as a tangible example of Atmos Energy’s commitment to be the safest provider of natural gas services. The Charles K. Vaughan Training Center in Plano, TX Gas City at the Charles K. Vaughan Center Atmos Energy 2023 Annual Report 7 40 Years of Atmos Energy Investing in Safety From the Ground Up “We touch more than 3 million natural gas customers in a positive way, and we contribute to the economic well-being of the 1,400 communities we serve because of our continuing investments in infrastructure and people.” Beginning in October 2011, under Kim R. Cocklin’s guidance, Atmos Energy announced a new strategy to grow the company through investing in infrastructure. Atmos Energy’s vision of being the safest provider of natural gas services fuels this strategy of modernizing its natural gas distribution, transmission, and storage systems. At the same time, the company has aligned its rate construct to support the safety and reliability needs of pipeline operations. Kim R. Cocklin, Chairman of the Board of Atmos Energy Corporation Atmos Energy employees at work on system modernization 8 Atmos Energy Earnings Growth Through System and Business Modernization Constructive Regulatory Mechanisms Support System and Business Modernization $17 billion in capital investments through 2028; >85% allocated to safety + Constructive rate mechanisms reducing regulatory lag = 6% to 8% consolidated EPS growth Rate Base (in billions) Earnings Per Share Earning on Annual Investments $8.35-$8.75 9% 1% $6.45-$6.65 $6.10 $28.0B-$30.0B $16.6 $14.1 $30 $25 $20 $15 $10 $5 $0 $9 $8 $7 $6 $5 $4 $3 $2 $1 $0 2022 2023 2028E 2023 2024E 2028E ¢ Distribution ¢ Pipeline and Storage 90% ¢ Within 0-6 months ¢ Within 7-12 months ¢ Greater than 12 months Fiscal 2023 by the Numbers $885.9 million Net income for the fiscal year of $885.9 million, compared with net income of $774.4 million in fiscal 2022. $6.10 EPS Earnings per diluted share in fiscal 2023 increased 8.9 percent compared to fiscal 2022 diluted earnings per share of $5.60, marking our 21st consecutive annual increase. $2.8 billion In fiscal 2023 we spent $2.8 billion to modernize our natural gas distribution and transmissions systems. $2.96 per share Dividends paid in fiscal 2023 were $2.96 per share. Atmos Energy 2023 Annual Report 9 Board of Directors J. Kevin Akers President and Chief Executive Officer, Atmos Energy Corporation, Dallas, Texas Board member since 2019 John C. Ale Former Senior Vice President, General Counsel and Corporate Secretary of Southwestern Energy Company Houston, Texas Board member since 2022 Committees: Corporate Responsibility, Sustainability, & Safety, Human Resources Robert W. Best Honorary Director, Retired Chairman of the Board, Atmos Energy Corporation, Dallas, Texas Board member since 1997 Kim R. Cocklin Chairman of the Board, Atmos Energy Corporation, Dallas, Texas Board member since 2009 Kelly H. Compton Executive Director, The Hoglund Foundation, Dallas, Texas Board member since 2016 Committees: Corporate Responsibility, Sustainability, & Safety, Human Resources Sean Donohue Chief Executive Officer Dallas/Fort Worth International Airport Dallas, Texas Board member since 2018 Committees: Corporate Responsibility, Sustainability, & Safety, Nominating and Corporate Governance Rafael G. Garza President and Founder, RGG Capital Partners, LLC, Fort Worth, Texas Board member since 2016 Committees: Audit, Nominating and Corporate Governance Richard K. Gordon General Partner, Juniper Capital LP and Juniper Energy LP; Senior Advisor, Juniper Capital II and Juniper Capital III, Houston, Texas Board member since 2001 Lead Director since 2016 Committees: Corporate Responsibility, Sustainability, & Safety, Executive (Chair), Human Resources (Chair) Nancy K. Quinn Independent Energy Consultant Key Biscayne, Florida Board member since 2004 Former Lead Director Committees: Audit (Chair), Executive, Nominating and Corporate Governance Richard A. Sampson General Partner and Founder, RS Core Capital, LLC, Denver, Colorado Wellington, Florida Board member since 2012 Committees: Human Resources, Executive, Nominating and Corporate Governance (Chair) Diana J. Walters Founder and Managing Member, Amichel, LLC, Pipe Creek, Texas Board member since 2018 Committees: Audit, Human Resources Frank Yoho Former Executive Vice President and President of Natural Gas, Duke Energy Charlotte, North Carolina Board member since 2020 Committees: Audit, Executive, Corporate Responsibility, Sustainability, & Safety (Chair) Senior Management Team J. Kevin Akers President and Chief Executive Officer John S. McDill Senior Vice President, Utility Operations Christopher T. Forsythe Senior Vice President and Chief Financial Officer Karen E. Hartsfield Senior Vice President, General Counsel and Corporate Secretary J. Matt Robbins Senior Vice President, Human Resources 10 Atmos Energy UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K (Mark One) ☑ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended September 30, 2023 ☐ OR TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 1-10042 Atmos Energy Corporation (Exact name of registrant as specified in its charter) Texas and Virginia (State or other jurisdiction of incorporation or organization) 1800 Three Lincoln Centre 5430 LBJ Freeway Dallas, Texas (Address of principal executive offices) 75-1743247 (IRS employer identification no.) 75240 (Zip code) Registrant’s telephone number, including area code: Securities registered pursuant to Section 12(b) of the Act: (972) 934-9227 Table of each class Trading Symbol Name of each exchange on which registered Common stock No Par Value ATO New York Stock Exchange Securities registered pursuant to Section 12(g) of the Act: None Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes þ No ¨ Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes ¨ No þ Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes þ No ¨ Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes þ No ¨ Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. See definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and "emerging growth company" in Rule 12b-2 of the Exchange Act. (Check one): Large accelerated filer ☑ Accelerated filer ☐ Non-accelerated filer ☐ Smaller reporting company ☐ Emerging growth company ☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨ Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report. ☑ If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant included in the filing reflect the correction of an error to previously issued financial statements. ¨ Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation received by any of the registrant's executive officers during the relevant recovery period pursuant to §240.10D-1(b). ¨ Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act). Yes ☐ No þ The aggregate market value of the common voting stock held by non-affiliates of the registrant as of the last business day of the registrant’s most recently completed second fiscal quarter, March 31, 2023, was $16,116,913,880. As of November 6, 2023, the registrant had 148,496,108 shares of common stock outstanding. DOCUMENTS INCORPORATED BY REFERENCE Portions of the registrant’s Definitive Proxy Statement to be filed for the Annual Meeting of Shareholders on February 7, 2024 are incorporated by reference into Part III of this report. TABLE OF CONTENTS Glossary of Key Terms Part I Item 1. Business ............................................................................................................................................................ Item 1A. Risk Factors ...................................................................................................................................................... Item 1B. Unresolved Staff Comments ............................................................................................................................. Item 2. Properties .......................................................................................................................................................... Item 3. Legal Proceedings ............................................................................................................................................. Item 4. Mine Safety Disclosures ................................................................................................................................... Part II Item 5. Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities .......................................................................................................................................................... Item 6. Reserved ........................................................................................................................................................... Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations ........................... Item 7A. Quantitative and Qualitative Disclosures About Market Risk ......................................................................... Item 8. Financial Statements and Supplementary Data ................................................................................................ Item 9. Changes in and Disagreements With Accountants on Accounting and Financial Disclosure ......................... Item 9A. Controls and Procedures ................................................................................................................................... Item 9B. Other Information ............................................................................................................................................. Item 9C. Disclosure Regarding Foreign Jurisdictions that Prevent Inspections ............................................................. Part III Item 10. Directors, Executive Officers and Corporate Governance ............................................................................... Item 11. Executive Compensation .................................................................................................................................. Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters ........ Item 13. Certain Relationships and Related Transactions, and Director Independence ................................................. Item 14. Principal Accountant Fees and Services ........................................................................................................... Item 15. Exhibits and Financial Statement Schedules .................................................................................................... Item 16. Form 10-K Summary ........................................................................................................................................ Part IV Page 4 5 15 19 20 21 21 21 23 23 34 35 86 86 88 88 88 89 89 89 89 89 94 GLOSSARY OF KEY TERMS AEK ............................................................. Atmos Energy Kansas Securitization I, LLC AFUDC ........................................................ Allowance for funds used during construction AOCI ............................................................ Accumulated Other Comprehensive Income ARM ............................................................ Annual Rate Mechanism ATO ............................................................. Trading symbol for Atmos Energy Corporation common stock on the NYSE Bcf ................................................................ Billion cubic feet COSO ........................................................... Committee of Sponsoring Organizations of the Treadway Commission DARR .......................................................... Dallas Annual Rate Review EDIT ............................................................ Excess Deferred Income Taxes ERISA .......................................................... Employee Retirement Income Security Act of 1974 FERC ........................................................... Federal Energy Regulatory Commission GAAP ........................................................... Generally Accepted Accounting Principles GRIP ............................................................ Gas Reliability Infrastructure Program GSRS ........................................................... Gas System Reliability Surcharge LTIP ............................................................. 1998 Long-Term Incentive Plan Mcf ............................................................... Thousand cubic feet MDWQ ........................................................ Maximum daily withdrawal quantity Mid-Tex ATM Cities ................................... Represents a coalition of 47 incorporated cities or approximately 10 percent of the Mid-Tex Division's customers. Mid-Tex Cities ............................................. Represents all incorporated cities other than Dallas and Mid-Tex ATM Cities, or approximately 72 percent of the Mid-Tex Division’s customers. MMcf ........................................................... Million cubic feet Moody’s ....................................................... Moody’s Investor Service, Inc. NGPA ........................................................... Natural Gas Policy Act of 1978 NYSE ........................................................... New York Stock Exchange PHMSA ........................................................ Pipeline and Hazardous Materials Safety Administration PPA .............................................................. Pension Protection Act of 2006 PRP .............................................................. Pipeline Replacement Program RRC ............................................................. Railroad Commission of Texas RRM ............................................................. Rate Review Mechanism RSC .............................................................. Rate Stabilization Clause S&P .............................................................. Standard & Poor’s Corporation SAVE ........................................................... Steps to Advance Virginia Energy SEC .............................................................. United States Securities and Exchange Commission Securitized Utility Tariff Bonds .................. Series 2023-A Senior Secured Securitized Utility Tariff Bonds Securitized Utility Tariff Property ............... As defined in the financing order issued by the KCC in October 2022 SIP ................................................................ System Integrity Program SIR ............................................................... System Integrity Rider SOFR ........................................................... Secured Overnight Financing Rate SRF .............................................................. Stable Rate Filing SSIR ............................................................. System Safety and Integrity Rider TCJA ............................................................ Tax Cuts and Jobs Act of 2017 WNA ............................................................ Weather Normalization Adjustment 4 The terms “we,” “our,” “us,” “Atmos Energy” and the “Company” refer to Atmos Energy Corporation and its subsidiaries, unless the context suggests otherwise. PART I ITEM 1. Business. Overview and Strategy Atmos Energy Corporation, headquartered in Dallas, Texas, and incorporated in Texas and Virginia, is the country’s largest natural-gas-only distributor based on number of customers. We safely deliver reliable, efficient and abundant natural gas through regulated sales and transportation arrangements to over 3.3 million residential, commercial, public authority and industrial customers in eight states located primarily in the South. We also operate one of the largest intrastate pipelines in Texas based on miles of pipe. Atmos Energy's vision is to be the safest provider of natural gas services. We will be recognized for exceptional customer service, for being a great employer and for achieving superior financial results. Since 2011, our operating strategy has focused on modernizing our business and infrastructure while reducing regulatory lag. This operating strategy supports continued investment in safety, innovation, environmental sustainability and our communities. Operating Segments As of September 30, 2023, we manage and review our consolidated operations through the following 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. Distribution Segment Overview The following table summarizes key information about our six regulated natural gas distribution divisions, presented in order of total rate base. Division Mid-Tex Kentucky/Mid-States Louisiana West Texas Mississippi Colorado-Kansas Service Areas Texas, including the Dallas/Fort Worth Metroplex Kentucky Tennessee Virginia Louisiana Amarillo, Lubbock, Midland Mississippi Colorado Kansas Communities Served 550 Customer Meters 1,856,356 220 270 80 110 170 185,630 165,267 25,083 378,483 330,490 273,586 129,197 142,292 We operate in our service areas under terms of non-exclusive franchise agreements granted by the various cities and towns that we serve. At September 30, 2023, we held 1,021 franchises having terms generally ranging from five to 35 years. A significant number of our franchises expire each year, which require renewal prior to the end of their terms. Historically, we have successfully renewed these franchises and believe that we will continue to be able to renew our franchises as they expire. Revenues in this operating segment are established by regulatory authorities in the states in which we operate. These rates are intended to be sufficient to cover the costs of conducting business, including a reasonable return on invested capital. In addition, we transport natural gas for others through our distribution systems. 5 Rates established by regulatory authorities often include cost adjustment mechanisms for costs that (i) are subject to significant price fluctuations compared to our other costs, (ii) represent a large component of our cost of service and (iii) are generally outside our control. Purchased gas cost adjustment mechanisms represent a traditional and common form of cost adjustment mechanism. Purchased gas cost adjustment mechanisms provide a method of recovering purchased gas costs on an ongoing basis without filing a rate case because they provide a dollar-for-dollar offset to increases or decreases in the cost of natural gas. Therefore, although substantially all of our distribution operating revenues fluctuate with the cost of gas that we purchase, distribution operating income is generally not affected by fluctuations in the cost of gas. Additionally, some jurisdictions have performance-based ratemaking adjustments to provide incentives to minimize purchased gas costs through improved storage management and use of financial instruments to reduce volatility in gas costs. Under the performance-based ratemaking adjustments, purchased gas costs savings are shared between the Company and its customers. Our supply of natural gas is provided by a variety of suppliers, including independent producers and marketers. The gas is delivered into our systems by various pipeline companies, withdrawals of gas from proprietary and contracted storage assets and base load and peaking arrangements, as needed. Supply arrangements consist of both base load and peaking quantities and are contracted from our suppliers on a firm basis with various terms at market prices. Base load quantities are those that flow at a constant level throughout the month and peaking quantities provide the flexibility to change daily quantities to match increases or decreases in requirements related to weather conditions. Except for local production purchases, we select our natural gas suppliers through a competitive bidding process by periodically requesting proposals from suppliers. We select these suppliers based on their ability to reliably deliver gas supply to our designated firm pipeline receipt points at the lowest reasonable cost. Major suppliers during fiscal 2023 were Cima Energy, LP, ConocoPhillips Company, EnLink Gas Marketing LP, Enterprise Navitas Midstream Midland Basin LLC, Hartree Partners, L.P., Sequent Energy Management LLC, Symmetry Energy Solutions, LLC, Targa Gas Marketing LLC, Texla Energy Management, Inc. and Twin Eagle Resource Management, LLC. The combination of base load and peaking agreements, coupled with the withdrawal of gas held in storage, allows us the flexibility to adjust to changes in weather, which minimizes our need to enter into long-term firm commitments. We estimate our peak-day availability of natural gas supply to be approximately 5.3 Bcf. The peak-day demand for our distribution operations in fiscal 2023 was on December 23, 2022, when sales to customers reached approximately 4.2 Bcf. Currently, our distribution divisions utilize 35 pipeline transportation companies, both interstate and intrastate, to transport our natural gas. The pipeline transportation agreements are firm and many of them have “pipeline no-notice” storage service, which provides for daily balancing between system requirements and nominated flowing supplies. These agreements have been negotiated with the shortest term necessary while still maintaining our right of first refusal. The natural gas supply for our Mid-Tex Division is delivered primarily by our APT Division. To maintain our deliveries to high priority customers, we have the ability, and have exercised our right, to interrupt or curtail service to certain customers pursuant to contracts and applicable state regulations or statutes. Our customers’ demand on our system is not necessarily indicative of our ability to meet current or anticipated market demands or immediate delivery requirements because of factors such as the physical limitations of gathering, storage and transmission systems, the duration and severity of cold weather, the availability of gas reserves from our suppliers, the ability to purchase additional supplies on a short-term basis and actions by federal and state regulatory authorities. Interruption and curtailment rights provide us the flexibility to meet the human-needs requirements of our customers on a reliable basis. Priority allocations imposed by federal and state regulatory agencies, as well as other factors beyond our control, may affect our ability to meet the demands of some of our customers. Pipeline and Storage Segment Overview Our pipeline and storage segment consists of the pipeline and storage operations of APT and our natural gas transmission operations in Louisiana. APT is one of the largest intrastate pipeline operations in Texas with a heavy concentration in the established natural gas-producing areas of central, northern and eastern Texas, extending into or near the major producing areas of the Barnett Shale, the Texas Gulf Coast and the Permian Basin of West Texas. Through its system, APT provides transportation and storage services to our Mid-Tex Division, other third party local distribution companies, industrial and electric generation customers, marketers and producers. As part of its pipeline operations, APT owns and operates five underground storage facilities in Texas. Revenues earned from transportation and storage services for APT are subject to traditional ratemaking governed by the RRC. Rates are updated through periodic filings made under Texas’ GRIP. GRIP allows us to include in our rate base annually approved capital costs incurred in the prior calendar year provided that we file a complete rate case at least once every five 6 years; the most recent of which was filed in May 2023. APT’s existing regulatory mechanisms allow certain transportation and storage services to be provided under market-based rates. 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. The demand fee charged to our Louisiana distribution division for these services is subject to regulatory approval by the Louisiana Public Service Commission. We also manage two asset management plans that serve distribution affiliates of the Company, which have been approved by applicable state regulatory commissions. Generally, these asset management plans require us to share with our distribution customers a significant portion of the cost savings earned from these arrangements. Ratemaking Activity Overview The method of determining regulated rates varies among the states in which our regulated businesses operate. The regulatory authorities have the responsibility of ensuring that utilities in their jurisdictions operate in the best interests of customers while providing utility companies the opportunity to earn a reasonable return on their investment. Generally, each regulatory authority reviews rate requests and establishes a rate structure intended to generate revenue sufficient to cover the costs of conducting business, including a reasonable return on invested capital. Our rate strategy focuses on reducing or eliminating regulatory lag, obtaining adequate returns and providing stable, predictable margins, which benefit both our customers and the Company. As a result of our ratemaking efforts in recent years, Atmos Energy has: • Formula rate mechanisms in place in four states that provide for an annual rate review and adjustment to rates. • Infrastructure programs in place in all of our states that provide for an annual adjustment to rates for qualifying capital expenditures. Through our annual formula rate mechanisms and infrastructure programs, we have the ability to recover approximately 90 percent of our capital expenditures within six months and substantially all of our capital expenditures within twelve months. • Authorization in tariffs, statute or commission rules that allows us to defer certain elements of our cost of service such as depreciation, ad valorem taxes and pension costs, until they are included in rates. • WNA mechanisms in seven states that serve to minimize the effects of weather on approximately 96 percent of our distribution residential and commercial revenues. • The ability to recover the gas cost portion of bad debts in five states which represents approximately 80 percent of our distribution residential and commercial revenues. 7 The following tables provides a jurisdictional rate summary for our regulated operations as of September 30, 2023. This information is for regulatory purposes only and may not be representative of our actual financial position. Effective Date of Last Rate/ GRIP Action Rate Base (thousands) (1) 05/17/2023 $4,055,375 05/14/2023 229,565 Authorized Rate of (1) Return 8.87% 7.00% Authorized Debt/ Equity Ratio (1) 47/53 Authorized Return on Equity (1) 11.50% 42-45/55-58 9.3% - 9.6% 7.00% 42-45/55-58 9.3% - 9.6% Division Jurisdiction Atmos Pipeline — Texas Colorado-Kansas Kentucky/Mid-States Louisiana Mid-Tex Mississippi West Texas Texas(5) Colorado Colorado SSIR Kansas Kansas SIP Kentucky Kentucky- PRP Tennessee Virginia Virginia- SAVE Louisiana Mid-Tex Cities(7) Mid-Tex ATM Cities Mid-Tex Environs Mid-Tex — Dallas Mississippi Mississippi - SIR West Texas Cities(8) (10) West Texas - ALDC West Texas - Environs West Texas - Triangle 01/01/2023 05/09/2023 04/01/2023 05/20/2022 10/02/2022 06/01/2023 04/01/2019 31,993 295,070 13,270 568,506 14,375 499,447 47,827 10/01/2022 11,753 07/01/2023 1,094,373 (4) 7.03% 6.82% 6.94% 7.58% 7.43% 7.43% 7.30% 10/01/2022 5,234,981(6) 7.28% 06/09/2023 5,932,535(6) 7.97% 06/01/2023 5,932,542(6) 7.97% 09/01/2023 11/01/2022 5,904,692(6) 525,348 7.43% 7.53% 11/01/2022 390,276 7.53% 10/01/2022 855,328(9) 7.28% 06/09/2023 960,622(9) 7.35% 06/01/2023 958,159(9) 7.97% 06/01/2023 56,279 7.71% (4) 44/56 45/55 45/55 38/62 42/58 42/58 (4) 42/58 40/60 40/60 40/60 (4) (4) 42/58 41/59 40/60 40/60 (4) 9.10% 9.23% 9.45% 9.80% 9.20% 9.20% (4) 9.80% 9.80% 9.80% 9.80% (4) (4) 9.80% (4) 9.80% 9.80% Division Jurisdiction Bad Debt (2) Rider Formula Rate Infrastructure Mechanism Performance Based Rate Program (3) Atmos Pipeline — Texas Colorado-Kansas Kentucky/Mid-States Louisiana Mid-Tex Cities Mid-Tex — Dallas Mississippi West Texas Texas Colorado Kansas Kentucky Tennessee Virginia Louisiana Texas Texas Mississippi Texas No No Yes Yes Yes Yes No Yes Yes No Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes N/A No Yes Yes Yes No No No No No No Yes No No No Yes No Yes Yes Yes Yes Yes 8 WNA Period N/A N/A October-May November-April October-April January-December December-March November-April November-April November-April October-May (1) The rate base, authorized rate of return, authorized debt/equity ratio and authorized return on equity presented in this table are those from the most recent approved regulatory filing for each jurisdiction. These rate bases, rates of return, debt/equity ratios and returns on equity are not necessarily indicative of current or future rate bases, rates of return or returns on equity. (2) The bad debt rider allows us to recover from customers the gas cost portion of customer accounts that have been written off. (3) The performance-based rate program provides incentives to distribution companies to minimize purchased gas costs by allowing the companies and their customers to share the purchased gas costs savings. (4) A rate base, rate of return, return on equity or debt/equity ratio was not included in the respective state commission’s final decision. (5) On October 24, 2023, APT and the intervening parties in its general rate case filed a Joint Notice of Settlement and Proposed Order. The settlement proposes a rate base of $4.3 billion, an authorized return of 8.49%, a debt/equity ratio of 40/60 and an authorized ROE of 11.45%. We anticipate the settlement agreement will be on the RRC's agenda for its December 13, 2023 meeting. (6) The Mid-Tex rate base represents a “system-wide,” or 100 percent, of the Mid-Tex Division’s rate base. (7) The Mid-Tex Cities approved the Formula Rate Mechanism filing with rates effective October 1, 2023, which included a rate base of $6.1 billion, an authorized return of 7.35%, a debt/equity ratio of 42/58 and an authorized ROE of 9.80%. (8) The West Texas Cities includes all West Texas Division cities except Amarillo, Lubbock, Dalhart and Channing (ALDC). (9) The West Texas rate base represents a "system-wide," or 100 percent, of the West Texas Division's rate base. (10) The West Texas Cities approved the Formula Rate Mechanism filing with rates effective October 1, 2023, which included a rate base of $965.3 million, an authorized return of 7.35%, a debt/equity ratio of 42/58 and an authorized ROE of 9.80%. Although substantial progress has been made in recent years to improve rate design and recovery of investment across our service areas, we are continuing to seek improvements in rate design to address cost variations and pursue tariffs that reduce regulatory lag associated with investments. Further, potential changes in federal energy policy, federal safety regulations and changing economic conditions will necessitate continued vigilance by the Company and our regulators in meeting the challenges presented by these external factors. Recent Ratemaking Activity The amounts described in the following sections represent the annual operating income that was requested or received in each rate filing, which may not necessarily reflect the stated amount referenced in the final order, as certain operating costs may have changed as a result of the commission's or other governmental authority's final ruling. Our ratemaking outcomes include the refund (return) of excess deferred income taxes (EDIT) resulting from previously enacted tax reform legislation and do not reflect the true economic benefit of the outcomes because they do not include the corresponding income tax benefit. The following tables summarize the annualized ratemaking outcomes we implemented in each of the last three fiscal years. Rate Action 2023 Filings: Annual formula rate mechanisms Rate case filings Other ratemaking activity Total 2023 Filings 2022 Filings: Annual formula rate mechanisms Rate case filings Other ratemaking activity Total 2022 Filings 2021 Filings: Annual formula rate mechanisms Rate case filings Other ratemaking activity Total 2021 Filings Annual Increase (Decrease) in Operating Income EDIT Impact (In thousands) Annual Increase (Decrease) in Operating Income Excluding EDIT $ $ $ $ $ $ 258,824 $ 2,940 1,320 263,084 $ 169,354 $ 5,938 (370) 174,922 $ 181,459 $ 5,119 (877) 185,701 $ (1,099) $ 6,791 — 5,692 $ 33,249 $ 7,379 — 40,628 $ 39,306 $ 1,168 — 40,474 $ 257,725 9,731 1,320 268,776 202,603 13,317 (370) 215,550 220,765 6,287 (877) 226,175 The following ratemaking efforts seeking $264.6 million in annual operating income were initiated during fiscal 2023 but had not been completed or implemented as of September 30, 2023: 9 Division Rate Action Jurisdiction Atmos Pipeline - Texas Rate Case Colorado-Kansas Kentucky/Mid-States Kentucky/Mid-States Kentucky/Mid-States Mid-Tex Mississippi Mississippi West Texas Infrastructure Mechanism Infrastructure Mechanism Infrastructure Mechanism Rate Case Formula Rate Mechanism Infrastructure Mechanism Formula Rate Mechanism Formula Rate Mechanism Texas (1) Kansas (2) Virginia (3) Kentucky (4) Virginia Mid-Tex Cities (5) Mississippi Mississippi West Texas Cities (6) Operating Income Requested (In thousands) $ 107,417 1,755 672 3,424 2,752 113,768 10,969 13,793 10,085 264,635 $ (1) On October 24, 2023, APT and the intervening parties in its general rate case filed a Joint Notice of Settlement and Proposed Order. We anticipate the settlement agreement will be on the RRC's agenda for its December 13, 2023 meeting. If approved, the settlement would result in a $27.0 million increase in annual operating income, exclusive of the impact of the cessation of $36.9 million in excess deferred income tax refunds, which are substantially offset by a corresponding increase in income taxes. New rates are anticipated to be implemented on January 1, 2024. (2) The Kansas Corporation Commission approved the GSRS filing on November 2, 2023, with rates effective November 2, 2023. (3) On September 11, 2023, the State Corporation Commission of Virginia approved a rate increase of $0.6 million effective October 1, 2023. (4) On September 29, 2023, the Kentucky Public Service Commission approved a rate increase of $2.9 million effective October 1, 2023. (5) The Mid-Tex Cities approved a rate increase of $98.6 million. New rates were implemented on October 1, 2023. (6) The West Texas Cities approved a rate increase of $8.6 million. New rates were implemented on October 1, 2023. Our recent ratemaking activity is discussed in greater detail below. Annual Formula Rate Mechanisms As an instrument to reduce regulatory lag, formula rate mechanisms allow us to refresh our rates on an annual basis without filing a formal rate case. However, these filings still involve discovery by the appropriate regulatory authorities prior to the final determination of rates under these mechanisms. We currently have specific infrastructure programs in all of our distribution divisions with tariffs in place to permit the investment associated with these programs to have their surcharge rate adjusted annually to recover approved capital costs incurred in a prior test-year period. The following table summarizes our annual formula rate mechanisms by state. State Infrastructure Programs Formula Rate Mechanisms Annual Formula Rate Mechanisms Colorado Kansas Kentucky Louisiana Mississippi Tennessee Texas Virginia System Safety and Integrity Rider (SSIR) Gas System Reliability Surcharge (GSRS), System Integrity Program (SIP) Pipeline Replacement Program (PRP) — — — (1) System Integrity Rider (SIR) Rate Stabilization Clause (RSC) Stable Rate Filing (SRF) (1) Gas Reliability Infrastructure Program (GRIP), (1) Annual Rate Mechanism (ARM) Dallas Annual Rate Review (DARR), Rate Review Mechanism (RRM) Steps to Advance Virginia Energy (SAVE) — (1) Infrastructure mechanisms in Texas, Louisiana and Tennessee allow for the deferral of all expenses associated with capital expenditures incurred pursuant to these rules, which primarily consists of interest, depreciation and other taxes (Texas only), until the next rate proceeding (rate case or annual rate filing), at which time investment and costs would be recoverable through base rates. 10 The following table summarizes our annual formula rate mechanisms with effective dates during the fiscal years ended September 30, 2023, 2022 and 2021: Division Jurisdiction 2023 Filings: Louisiana Mid-Tex Mid-Tex West Texas West Texas West Texas Mid-Tex Kentucky/Mid-States Atmos Pipeline - Texas Louisiana DARR (1) ATM Cities Amarillo, Lubbock, Dalhart and Channing Triangle Environs Environs Tennessee ARM Texas Colorado-Kansas Kansas SIP Colorado-Kansas Colorado SSIR Mississippi Mississippi Mississippi - SIR Mississippi - SRF Kentucky/Mid-States Kentucky PRP Mid-Tex West Texas Kentucky/Mid-States Total 2023 Filings 2022 Filings: Kentucky/Mid-States Louisiana West Texas West Texas West Texas Mid-Tex Mid-Tex Mid-Tex Atmos Pipeline - Texas Mid-Tex Cities RRM West Texas Cities RRM Virginia - SAVE Louisiana Amarillo, Lubbock, Dalhart and Channing Triangle Environs ATM Cities Environs DARR (2) Texas Colorado-Kansas Kansas SIP Colorado-Kansas Kansas GSRS Colorado-Kansas Colorado SSIR Mid-Tex West Texas Mississippi Mississippi Kentucky/Mid-States Total 2022 Filings Mid-Tex Cities RRM West Texas Cities RRM Mississippi - SIR Mississippi - SRF Virginia - SAVE Increase (Decrease) in Annual Operating Income Test Year Ended EDIT Impact (In thousands) Increase (Decrease) in Annual Operating Income Excluding EDIT Effective Date 12/2022 $ 14,466 $ 17 $ 14,483 07/01/2023 09/2022 12/2022 12/2022 12/2022 12/2022 12/2022 09/2022 12/2022 12/2022 12/2023 10/2023 10/2023 09/2023 12/2021 12/2021 09/2023 17,345 12,825 6,938 717 1,332 5,983 14 84,931 772 1,971 8,560 12,188 1,588 81,402 7,315 51 — — — — — (1,509) — — — — 778 — (395) (41) 17,396 06/14/2023 12,825 06/09/2023 6,938 06/09/2023 717 06/01/2023 1,332 06/01/2023 5,983 (1,495) 06/01/2023 06/01/2023 84,931 05/17/2023 772 04/01/2023 1,971 8,560 01/01/2023 11/01/2022 12,966 11/01/2022 1,588 10/02/2022 81,007 10/01/2022 7,274 10/01/2022 477 258,824 $ $ — (1,099) $ 477 257,725 10/01/2022 2,466 7,261 6,122 1,549 1,221 07/01/2022 07/01/2022 06/11/2022 06/11/2022 06/11/2022 12,815 06/10/2022 5,646 06/10/2022 13,201 05/25/2022 78,750 05/18/2022 623 04/01/2022 1,820 2,610 02/01/2022 01/01/2022 — — — — — — — — — — 33,851 55,524 12/01/2021 3,347 2,123 4,317 3,498 12/01/2021 10,477 11/01/2021 (1,307) 11/01/2021 327 169,354 $ $ — 33,249 $ 327 202,603 10/01/2021 6,122 1,549 1,221 12,815 5,646 13,201 78,750 623 1,820 2,610 21,673 151 8,354 (5,624) 12/2021 12/2021 12/2021 12/2021 12/2021 09/2021 12/2021 12/2021 09/2021 12/2022 12/2020 12/2020 10/2022 10/2022 09/2022 11 Tennessee ARM 09/2021 $ 2,466 $ — $ 12/2021 17,650 (10,389) 2021 Filings: Mid-Tex Louisiana Mid-Tex West Texas West Texas Mid-Tex Kentucky/Mid-States Atmos Pipeline - Texas Environs Louisiana ATM Cities (3) Triangle (3) Environs (3) DARR (3) Tennessee ARM Texas Colorado-Kansas Kansas GSRS Colorado-Kansas Colorado SSIR Mid-Tex West Texas Mississippi Mississippi Mid-Tex Cities RRM West Texas Cities RRM Mississippi - SIR Mississippi - SRF Kentucky/Mid-States Virginia - SAVE Kentucky/Mid-States Total 2021 Filings Kentucky PRP 12/2020 $ 4,632 $ — $ 4,632 09/01/2021 12/2020 12/2020 12/2020 12/2020 09/2020 09/2020 12/2020 09/2020 12/2021 12/2019 12/2019 10/2021 10/2021 09/2021 09/2021 (2,407) 11,085 416 1,267 1,708 10,260 43,868 1,695 2,366 82,645 5,645 10,556 5,856 305 24,192 21,785 07/01/2021 — — — 11,085 06/11/2021 416 06/11/2021 1,267 06/11/2021 15,114 16,822 06/09/2021 — — — — — — — — — 10,260 06/01/2021 43,868 05/11/2021 1,695 2,366 02/01/2021 01/01/2021 82,645 12/01/2020 5,645 12/01/2020 10,556 11/01/2020 5,856 11/01/2020 305 10/01/2020 1,562 181,459 $ $ — 39,306 $ 1,562 220,765 10/01/2020 (1) The rate increase for this filing was approved based on the effective date herein; however, the new rates were implemented beginning September 1, 2023. (2) The rate increase for this filing was approved based on the effective date herein; however, the new rates were implemented beginning September 1, 2022. (3) The rate increases for these filings were approved based on the effective dates herein; however, the new rates were implemented beginning September 1, 2021. Rate Case Filings A rate case is a formal request from Atmos Energy to a regulatory authority to increase rates that are charged to customers. Rate cases may also be initiated when the regulatory authorities request us to justify our rates. This process is referred to as a “show cause” action. Adequate rates are intended to provide for recovery of the Company’s costs as well as a reasonable rate of return to our shareholders and ensure that we continue to safely deliver reliable, reasonably priced natural gas service to our customers. The following table summarizes our recent rate case activity during the fiscal years ended September 30, 2023, 2022 and 2021: Division State Increase in Annual Operating Income EDIT Impact (In thousands) Increase in Annual Operating Income Excluding EDIT Effective Date 2023 Rate Case Filings: Colorado-Kansas Colorado-Kansas Total 2023 Rate Case Filings 2022 Rate Case Filings: Kentucky/Mid-States Total 2022 Rate Case Filings 2021 Rate Case Filings: West Texas (ALDC) Total 2021 Rate Case Filings Colorado Kansas Kentucky (1) Texas $ $ $ $ $ $ 913 $ 2,027 (54) $ 6,845 2,940 $ 6,791 $ 859 8,872 9,731 05/14/2023 05/09/2023 5,938 $ 5,938 $ 5,119 $ 5,119 $ 7,379 $ 7,379 $ 13,317 13,317 05/20/2022 1,168 $ 1,168 $ 6,287 6,287 06/01/2021 (1) The rate case outcome for Kentucky is inclusive of the fiscal 2022 pipeline replacement program. 12 Other Ratemaking Activity The following table summarizes other ratemaking activity during the fiscal years ended September 30, 2023, 2022 and 2021: Division Jurisdiction Rate Activity Increase (Decrease) in Annual Operating Income (In thousands) Effective Date 2023 Other Rate Activity: Colorado-Kansas Total 2023 Other Rate Activity 2022 Other Rate Activity: Colorado-Kansas Total 2022 Other Rate Activity 2021 Other Rate Activity: Colorado-Kansas Total 2021 Other Rate Activity Kansas Ad Valorem (1) Kansas Ad Valorem (1) Kansas Ad-Valorem (1) $ $ $ $ $ $ 1,320 1,320 (370) (370) (877) (877) 02/01/2023 02/01/2022 02/01/2021 (1) The Ad Valorem filing relates to property taxes that are either over or undercollected compared to the amount included in our Kansas service area's base rates. Other Regulation We are regulated by various state or local public utility authorities. We are also subject to regulation by the United States Department of Transportation with respect to safety requirements in the operation and maintenance of our transmission and distribution facilities. In addition, our operations are also subject to various state and federal laws regulating environmental matters. From time to time, we receive inquiries regarding various environmental matters. We believe that our properties and operations comply with, and are operated in conformity with, applicable safety and environmental statutes and regulations. There are no administrative or judicial proceedings arising under environmental quality statutes pending or known to be contemplated by governmental agencies which would have a material adverse effect on us or our operations. The Pipeline and Hazardous Materials Safety Administration (PHMSA), within the U.S. Department of Transportation, develops and enforces regulations for the safe, reliable and environmentally sound operation of the pipeline transportation system. The PHMSA pipeline safety statutes provide for states to assume safety authority over intrastate natural transmission and distribution gas pipelines. State pipeline safety programs are responsible for adopting and enforcing the federal and state pipeline safety regulations for intrastate natural gas transmission and distribution pipelines. The Federal Energy Regulatory Commission (FERC) allows, pursuant to Section 311 of the Natural Gas Policy Act (NGPA), gas transportation services through our APT assets “on behalf of” interstate pipelines or local distribution companies served by interstate pipelines, without subjecting these assets to the jurisdiction of the FERC under the NGPA. Additionally, the FERC has regulatory authority over the use and release of interstate pipeline and storage capacity. The FERC also has authority to detect and prevent market manipulation and to enforce compliance with FERC’s other rules, policies and orders by companies engaged in the sale, purchase, transportation or storage of natural gas in interstate commerce. We have taken what we believe are the necessary and appropriate steps to comply with these regulations. The SEC and the Commodities Futures Trading Commission, pursuant to the Dodd–Frank Act, established numerous regulations relating to U.S. financial markets. We enacted procedures and modified existing business practices and contractual arrangements to comply with such regulations. Competition Although our regulated distribution operations are not currently in significant direct competition with any other distributors of natural gas to residential and commercial customers within our service areas, we do compete with other natural gas suppliers and suppliers of alternative fuels for sales to industrial customers. We compete in all aspects of our business with alternative energy sources, including, in particular, electricity. Electric utilities offer electricity as a rival energy source and compete for the space heating, water heating and cooking markets. Promotional incentives, improved equipment efficiencies and promotional rates all contribute to the acceptability of electrical equipment. The principal means to compete against alternative fuels is lower prices, and natural gas historically has maintained its price advantage in the residential, commercial and industrial markets. 13 Our pipeline and storage operations have historically faced competition from other existing intrastate pipelines seeking to provide or arrange transportation, storage and other services for customers. In the last few years, several new pipelines have been completed, which has increased the level of competition in this segment of our business. Employees The Corporate Responsibility, Sustainability, and Safety Committee of the Board of Directors oversees matters relating to equal employment opportunities, diversity, and inclusion; human workplace rights; employee health and safety; and the Company’s vision, values, and culture. It oversees the Company's policies, practices and procedures relating to sustainability to support the alignment of the Company's sustainability strategy with the Company's corporate strategy. Part of our vision is to create a culture that respects and appreciates diversity. For this reason, we strive to have a workforce that reflects the communities we serve. At September 30, 2023, we had 5,019 employees. We monitor our workforce data on a calendar year basis. As of December 31, 2022, the last date for which information is available, 61 percent of our employees worked in field roles and 39 percent worked in support/shared services roles. No employees are subject to a collective bargaining agreement. To recruit and hire individuals with a variety of skills, talents, backgrounds and experiences, we value and cultivate our strong relationships with various community and diversity outreach sources. We also target jobs fairs including those focused on minority, veteran and women candidates and partner with local colleges and universities to identify and recruit qualified applicants in each of the cities and towns we serve. Finally, we believe we offer a competitive benefits program to help retain our employees. We perform succession planning annually to ensure that we develop and sustain a strong bench of talent capable of performing at the highest levels. Not only is talent identified, but potential paths of development are discussed to ensure that employees have an opportunity to build their skills and are well-prepared for future roles. The strength of our succession planning process is evident through our long history of promoting our leaders from within the organization. Available Information Our Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K and other reports, and amendments to those reports, and other forms that we file with or furnish to the Securities and Exchange Commission (SEC) at their website, www.sec.gov, are also available free of charge at our website, www.atmosenergy.com/company/ publications-and-sec-filings, as soon as reasonably practicable, after we electronically file these reports with, or furnish these reports to, the SEC. We will also provide copies of these reports free of charge upon request to Shareholder Relations at the address and telephone number appearing below: 14 Shareholder Relations Atmos Energy Corporation P.O. Box 650205 Dallas, Texas 75265-0205 972-855-3729 Corporate Governance In accordance with and pursuant to relevant related rules and regulations of the SEC as well as corporate governance- related listing standards of the New York Stock Exchange (NYSE), the Board of Directors of the Company has established and periodically updated our Corporate Governance Guidelines and Code of Conduct, which is applicable to all directors, officers and employees of the Company. In addition, in accordance with and pursuant to such NYSE listing standards, our Chief Executive Officer during fiscal 2023, John K. Akers, certified to the New York Stock Exchange that he was not aware of any violations by the Company of NYSE corporate governance listing standards. The Board of Directors also annually reviews and updates, if necessary, the charters for each of its Audit, Human Resources, Nominating and Corporate Governance and Corporate Responsibility, Sustainability and Safety Committees. All of the foregoing documents are posted on our website at www.atmosenergy.com/company/corporate-responsibility-reports. We will also provide copies of all corporate governance documents free of charge upon request to Shareholder Relations at the address listed above. ITEM 1A. Risk Factors. Our financial and operating results are subject to a number of risk factors, many of which are not within our control. Investors should carefully consider the following discussion of risk factors as well as other information appearing in this report. These factors include the following, which are organized by category: Regulatory and Legislative Risks We are subject to federal, state and local regulations that affect our operations and financial results. We are subject to regulatory oversight from various federal, state and local regulatory authorities in the eight states that we serve. Therefore, our returns are continuously monitored and are subject to challenge for their reasonableness by the appropriate regulatory authorities or other third-party intervenors. In the normal course of business, as a regulated entity, we often need to place assets in service and establish historical test periods before rate cases that seek to adjust our allowed returns to recover that investment can be filed. Further, the regulatory review process can be lengthy in the context of traditional ratemaking. Because of this process, we suffer the negative financial effects of having placed assets in service without the benefit of rate relief, which is commonly referred to as “regulatory lag.” Regulatory authorities in the states we serve have approved various infrastructure and annual rate adjustment mechanisms to effectively reduce the regulatory lag inherent in the ratemaking process. Regulatory lag could significantly increase if the regulatory authorities modify or terminate these rate mechanisms. The regulatory process also involves the risk that regulatory authorities may (i) review our purchases of natural gas and adjust the amount of our gas costs that we pass through to our customers or (ii) limit or disallow the costs we may have incurred from our cost of service that can be recovered from customers. We are also subject to laws, regulations and other legal requirements enacted or adopted by federal, state and local governmental authorities relating to protection of the environment and health and safety matters, including those that govern discharges of substances into the air and water, the management and disposal of hazardous substances and waste, the clean-up of contaminated sites, groundwater quality and availability, plant and wildlife protection, as well as work practices related to employee health and safety. Environmental legislation also requires that our facilities, sites and other properties associated with our operations be operated, maintained, abandoned and reclaimed to the satisfaction of applicable regulatory authorities. Failure to comply with these laws, regulations, permits and licenses may expose us to fines, penalties or interruptions in our operations that could be significant to our financial results. In addition, existing environmental regulations may be revised or our operations may become subject to new regulations. Some of our operations are subject to increased federal regulatory oversight that could affect our operations and financial results. FERC has regulatory authority over some of our operations, including the use and release of interstate pipeline and storage capacity. FERC has adopted rules designed to prevent market power abuse and market manipulation and to promote compliance with FERC’s other rules, policies and orders by companies engaged in the sale, purchase, transportation or storage of natural gas in interstate commerce. These rules carry increased penalties for violations. Although we have taken steps to structure current and future transactions to comply with applicable current FERC regulations, changes in FERC regulations or their 15 interpretation by FERC or additional regulations issued by FERC in the future could also adversely affect our business, financial condition or financial results. We may experience increased federal, state and local regulation of the safety of our operations. The safety and protection of the public, our customers and our employees is our top priority. We constantly monitor and maintain our pipeline and distribution systems to ensure that natural gas is delivered safely, reliably and efficiently through our network of more than 75,000 miles of distribution and transmission lines. As in recent years, natural gas distribution and pipeline companies are continuing to encounter increasing federal, state and local oversight of the safety of their operations. Although we believe these are costs ultimately recoverable through our rates, the costs of complying with new laws and regulations may have at least a short-term adverse impact on our operating costs and financial results. Operational Risks We may incur significant costs and liabilities resulting from pipeline integrity and other similar programs and related repairs. PHMSA requires pipeline operators to develop integrity management programs to comprehensively evaluate certain areas along their pipelines and to take additional measures to protect pipeline segments located in “high consequence areas” where a leak or rupture could potentially do the most harm. As a pipeline operator, the Company is required to: • • • • • perform ongoing assessments of pipeline integrity; identify and characterize applicable threats to pipeline segments that could impact a “high consequence area”; improve data collection, integration and analysis; repair and remediate the pipeline as necessary; and implement preventative and mitigating actions. The Company incurs significant costs associated with its compliance with existing PHMSA and comparable state regulations. Although we believe these are costs ultimately recoverable through our rates, the costs of complying with new laws and regulations may have at least a short-term adverse impact on our operating costs and financial results. For example, the adoption of new regulations requiring more comprehensive or stringent safety standards could require installation of new or modified safety controls, new capital projects, or accelerated maintenance programs, all of which could require a potentially significant increase in operating costs. Distributing, transporting and storing natural gas involve risks that may result in accidents and additional operating costs. Our operations involve a number of hazards and operating risks inherent in storing and transporting natural gas that could affect the public safety and reliability of our distribution system. While Atmos Energy, with the support from each of its regulatory commissions, is accelerating the replacement of pipeline infrastructure, operating issues such as leaks, accidents, equipment problems and incidents, including explosions and fire, could result in legal liability, repair and remediation costs, increased operating costs, significant increased capital expenditures, regulatory fines and penalties and other costs and a loss of customer confidence. We maintain liability and property insurance coverage in place for many of these hazards and risks. However, because some of our transmission pipeline and storage facilities are near or are in populated areas, any loss of human life or adverse financial results resulting from such events could be large. If these events were not fully covered by our general liability and property insurance, which policies are subject to certain limits and deductibles, our operations or financial results could be adversely affected. If contracted gas supplies, interstate pipeline and/or storage services are not available or delivered in a timely manner, our ability to meet our customers’ natural gas requirements may be impaired and our financial condition may be adversely affected. In order to meet our customers’ annual and seasonal natural gas demands, we must obtain a sufficient supply of natural gas, interstate pipeline capacity and storage capacity. If we are unable to obtain these, either from our suppliers’ inability to deliver the contracted commodity or the inability to secure replacement quantities, our financial condition and results of operations may be adversely affected. If a substantial disruption to or reduction in interstate natural gas pipelines’ transmission and storage capacity occurred due to operational failures or disruptions, legislative or regulatory actions, hurricanes, tornadoes, floods, extreme cold weather, terrorist or cyber-attacks or acts of war, our operations or financial results could be adversely affected. Our operations are subject to increased competition. In residential and commercial customer markets, our distribution operations compete with other energy products, such as electricity and propane. Our primary product competition is with electricity for heating, water heating and cooking. If customer 16 growth slows or existing customers choose to conserve their use of gas or choose another energy product, reduced gas purchases and customer billings could adversely impact our business. In the case of industrial customers, such as manufacturing plants, adverse economic conditions, including higher gas costs, could cause these customers to use alternative sources of energy, such as electricity, or bypass our systems in favor of special competitive contracts with lower per-unit costs. Our pipeline and storage operations historically have faced limited competition from other existing intrastate pipelines and gas marketers seeking to provide or arrange transportation, storage and other services for customers. The completion of new pipelines in our service area may increase the competition in this segment of our business. Failure to attract and retain a qualified workforce could adversely affect our results of operations. The competition for talent has become increasingly intense and we may experience increased employee turnover due to a tightening labor market. If we are unable to recruit and retain an appropriately qualified workforce, the Company could encounter operating challenges primarily due to a loss of institutional knowledge and expertise, errors due to inexperience, or the lengthy time period typically required to adequately train replacement personnel. In addition, higher costs could result from loss of productivity, increased safety compliance issues, or cost of contract labor. Additionally, our ability to operate is contingent on maintaining a healthy workforce and a safe working environment. As a provider of essential services, we have an obligation to provide natural gas services to customers. Incidents that impact the health and availability of our workforce could threaten the continuity of our business operations. Natural disasters, terrorist activities or other significant events could adversely affect our operations or financial results. Natural disasters are always a threat to our assets and operations. In addition, the threat of terrorist activities could lead to increased economic instability and volatility in the price of natural gas that could affect our operations. Also, companies in our industry may face a heightened risk of exposure to actual acts of terrorism, which could subject our operations to increased risks. As a result, the availability of insurance covering such risks may become more limited, which could increase the risk that an event could adversely affect our operations or financial results. Technology and Cybersecurity Risks Increased dependence on technology may hinder the Company’s business operations and adversely affect its financial condition and results of operations if such technologies fail. Over the last several years, the Company has implemented or acquired a variety of technological tools including both Company-owned information technology and technological services provided by outside parties. These tools and systems support critical functions including scheduling and dispatching of service technicians, automated meter reading systems, customer care and billing, operational plant logistics, management reporting and external financial reporting. The failure of these or other similarly important technologies, or the Company’s inability to have these technologies supported, updated, expanded, or integrated into other technologies, could hinder its business operations and adversely impact its financial condition and results of operations. Although the Company has, when possible, developed alternative sources of technology and built redundancy into its computer networks and tools, there can be no assurance that these efforts would protect against all potential issues related to the loss of any such technologies. Cyber-attacks or acts of cyber-terrorism could disrupt our business operations and information technology systems or result in the loss or exposure of confidential or sensitive customer, employee or Company information. Our business operations and information technology systems may be vulnerable to an attack by individuals or organizations intending to disrupt our business operations and information technology systems, even though the Company has implemented policies, procedures and controls to prevent and detect these activities. We use our information technology systems to manage our distribution and intrastate pipeline and storage operations and other business processes. Disruption of those systems could adversely impact our ability to safely deliver natural gas to our customers, operate our pipeline and storage systems or serve our customers timely. Accordingly, if such an attack or act of terrorism were to occur, our operations and financial results could be adversely affected. In addition, we use our information technology systems to protect confidential or sensitive customer, employee and Company information developed and maintained in the normal course of our business. Any attack on such systems that would result in the unauthorized release of customer, employee or other confidential or sensitive data could have a material adverse effect on our business reputation, increase our costs and expose us to additional material legal claims and liability. Even though we have insurance coverage in place for many of these cyber-related risks, if such an attack or act of terrorism were to occur, our operations and financial results could be adversely affected to the extent not fully covered by such insurance coverage. 17 Compliance with and changes in cybersecurity requirements have a cost and operational impact on our business, and failure to comply with such laws and regulations could adversely impact our reputation, results of operations, financial condition and/or cash flows. As cyber-attacks are becoming more sophisticated, U.S. government warnings have indicated that critical infrastructure assets, including pipeline infrastructure, may be specifically targeted by certain groups. In recent years, the U.S. government has issued directives that require critical pipeline owners to comply with mandatory reporting measures, designate a cybersecurity coordinator, provide vulnerability assessments and ensure compliance with certain cybersecurity requirements. Such directives or other requirements may require expenditure of significant additional resources to respond to cyber-attacks, to continue to modify or enhance protective measures, or to assess, investigate and remediate any critical infrastructure security vulnerabilities. Any failure to comply with such government regulations or failure in our cybersecurity protective measures may result in enforcement actions that may have a material adverse effect on our business, results of operations and financial condition. In addition, there is no certainty that costs incurred related to securing against threats will be recovered through rates. Climate Risks Adverse weather conditions could affect our operations or financial results. We have weather-normalized rates for approximately 96 percent of our residential and commercial revenues in our distribution operations, which substantially mitigates the adverse effects of warmer-than-normal weather for meters in those service areas. However, there is no assurance that we will continue to receive such regulatory protection from adverse weather in our rates in the future. The loss of such weather-normalized rates could have an adverse effect on our operations and financial results. In addition, our operating results may continue to vary somewhat with the actual temperatures during the winter heating season. Additionally, sustained cold weather could challenge our ability to adequately meet customer demand in our operations. Greenhouse gas emissions or other legislation or regulations intended to address climate change could increase our operating costs, adversely affecting our financial results, growth, cash flows and results of operations. Six of the eight states in which we operate have passed legislation to prevent local governments from limiting the types of energy available to customers. However, federal, regional and/or state legislative and/or regulatory initiatives may attempt to control or limit the causes of climate change, including greenhouse gas emissions, such as carbon dioxide and methane. Such laws or regulations could impose costs tied to greenhouse gas emissions, operational requirements or restrictions, or additional charges to fund energy efficiency activities. They could also provide a cost advantage to alternative energy sources, impose costs or restrictions on end users of natural gas, or result in other costs or requirements, such as costs associated with the adoption of new infrastructure and technology to respond to new mandates. The focus on climate change could adversely impact the reputation of fossil fuel products or services. The occurrence of the foregoing events could put upward pressure on the cost of natural gas relative to other energy sources, increase our costs and the prices we charge to customers, reduce the demand for natural gas or cause fuel switching to other energy sources, and impact the competitive position of natural gas and the ability to serve new or existing customers, adversely affecting our business, results of operations and cash flows. The operations and financial results of the Company could be adversely impacted as a result of climate change. As climate change occurs, our businesses could be adversely impacted. To the extent climate change results in materially increasing temperatures, financial results could be adversely affected through lower gas volumes and revenues. Climate change could also cause shifts in population, including customers moving away from our service territories. It could also result in more frequent and more severe weather events, such as hurricanes and tornadoes, which could increase our costs to repair damaged facilities and restore service to our customers or impact the cost of gas. If we were unable to deliver natural gas to our customers, our financial results would be impacted by lost revenues, and we generally would have to seek approval from regulators to recover restoration costs. To the extent we would be unable to recover those costs, or if higher rates resulting from our recovery of such costs would result in reduced demand for our services, our future business, financial condition or financial results could be adversely impacted. Financial, Economic and Market Risks Our growth in the future may be limited by the nature of our business, which requires extensive capital spending. Our operations are capital-intensive. We must make significant capital expenditures on a long-term basis to modernize our distribution and transmission system and to comply with the safety rules and regulations issued by the regulatory authorities responsible for the service areas we operate. In addition, we must continually build new capacity to serve the growing needs of the communities we serve. The magnitude of these expenditures may be affected by a number of factors, including new policy and regulations, and the general state of the economy. 18 The liquidity required to fund our working capital, capital expenditures and other cash needs is provided from a combination of internally generated cash flows and external debt and equity financing. The cost and availability of borrowing funds from third party lenders or issuing equity is dependent on the liquidity of the credit markets, interest rates and other market conditions. This in turn may limit the amount of funds we can invest in our infrastructure. The Company is dependent on continued access to the credit and capital markets to execute our business strategy. Our long-term debt is currently rated as “investment grade” by Standard & Poor’s Corporation and Moody’s Investors Service, Inc. Similar to most companies, we rely upon access to both short-term and long-term credit and capital markets to satisfy our liquidity requirements. If adverse credit conditions were to cause a significant limitation on our access to the private credit and public capital markets, we could see a reduction in our liquidity. A significant reduction in our liquidity could in turn trigger a negative change in our ratings outlook or even a reduction in our credit ratings by one or more of the credit rating agencies. Such a downgrade could further limit our access to private credit and/or public capital markets and increase our costs of borrowing. While we believe we can meet our capital requirements from our operations and the sources of financing available to us, we can provide no assurance that we will continue to be able to do so in the future. The future effects on our business, liquidity and financial results of a deterioration of current conditions in the credit and capital markets could be material and adverse to us, both in the ways described above or in other ways that we do not currently anticipate. We are exposed to market risks that are beyond our control, which could adversely affect our financial results. We are subject to market risks beyond our control, including (i) commodity price volatility caused by market supply and demand dynamics, counterparty performance or counterparty creditworthiness and (ii) interest rate risk. We are generally insulated from commodity price risk through our purchased gas cost mechanisms. With respect to interest rate risk, increases in interest rates could adversely affect our future financial results to the extent that we do not recover our actual interest expense in our rates. The concentration of our operations in the State of Texas exposes our operations and financial results to economic conditions, weather patterns and regulatory decisions in Texas. Approximately 70 percent of our consolidated operations are located in the State of Texas. This concentration of our business in Texas means that our operations and financial results may be significantly affected by changes in the Texas economy in general, weather patterns and regulatory decisions by state and local regulatory authorities in Texas. A deterioration in economic conditions could adversely affect our customers and negatively impact our financial results. Any adverse changes in economic conditions in the states in which we operate could adversely affect the financial resources of many domestic households. As a result, our customers could seek to use less gas and it may be more difficult for them to pay their gas bills. This would likely lead to slower collections and higher than normal levels of accounts receivable. This, in turn, could increase our financing requirements. Additionally, should economic conditions deteriorate, our industrial customers could seek alternative energy sources, which could result in lower transportation volumes. Increased gas costs could adversely impact our customer base and customer collections and increase our level of indebtedness. Rapid increases in the costs of purchased gas would cause us to experience a significant increase in short-term or long-term debt. We must pay suppliers for gas when it is purchased, which can be significantly in advance of when these costs may be recovered through the collection of monthly customer bills for gas delivered. Increases in purchased gas costs also slow our natural gas distribution collections as customers may delay the payment of their gas bills, leading to higher than normal accounts receivable. This could result in higher short-term debt levels, greater collection efforts and increased bad debt expense. Our pension and other postretirement benefit plans are subject to investment and interest rate risk that could negatively impact our financial condition. We have pension and other postretirement benefit plans that provide benefits to many of our employees and retirees. Costs of providing benefits and related- funding requirements of these plans are subject to changes in the market value of the assets that fund the plans. The funded status of the plans and the related costs reflected in the Company’s financial statements are affected by various factors, which are subject to an inherent degree of uncertainty, including economic conditions, financial market performance, interest rates, life expectancies and demographics. Poor investment returns or lower interest rates may necessitate accelerated funding of the plans to meet minimum federal government requirements, which could have an adverse impact on the Company’s financial condition and results of operations. ITEM 1B. Unresolved Staff Comments. Not applicable. 19 ITEM 2. Properties. Distribution, transmission and related assets In our distribution segment, we owned an aggregate of 73,689 miles of underground distribution and transmission mains throughout our distribution systems. These mains are located on easements or rights-of-way. We maintain our mains through a program of continuous inspection and repair and believe that our system of mains is in good condition. Through our pipeline and storage segment we owned 5,645 miles of gas transmission lines. Storage Assets We own underground gas storage facilities in several states to supplement the supply of natural gas in periods of peak demand. The following table summarizes certain information regarding our underground gas storage facilities at September 30, 2023: State Working Capacity (Mcf) Base Gas (1) (Mcf) Distribution Segment Kentucky Kansas Mississippi Total Pipeline and Storage Segment Texas Louisiana Total Total 7,956,991 3,239,000 1,907,571 13,103,562 53,083,549 411,040 53,494,589 66,598,151 9,562,283 2,300,000 2,442,917 14,305,200 19,678,025 256,900 19,934,925 34,240,125 Total Capacity (Mcf) 17,519,274 5,539,000 4,350,488 27,408,762 72,761,574 667,940 73,429,514 100,838,276 Maximum Daily Delivery Capability (Mcf) 146,660 32,000 29,136 207,796 2,460,000 56,000 2,516,000 2,723,796 (1) Base gas represents the volume of gas that must be retained in a facility to maintain reservoir pressure. Additionally, we contract for storage service in underground storage facilities on many of the interstate and intrastate pipelines serving us to supplement our proprietary storage capacity. The following table summarizes our contracted storage capacity at September 30, 2023: Segment Division/Company Distribution Segment Colorado-Kansas Division Kentucky/Mid-States Division Louisiana Division Mid-Tex Division Mississippi Division West Texas Division Total Pipeline and Storage Segment Maximum Storage Quantity (MMBtu) Maximum Daily Withdrawal Quantity (1) (Mcf) 6,343,728 8,175,103 2,594,875 5,500,000 5,799,536 5,000,000 33,413,242 147,692 226,320 177,765 210,000 222,764 161,000 1,145,541 Trans Louisiana Gas Pipeline, Inc. 1,000,000 47,500 Total Contracted Storage Capacity 34,413,242 1,193,041 (1) Maximum daily withdrawal quantity (MDWQ) amounts will fluctuate depending upon the season and the month. Unless otherwise noted, MDWQ amounts represent the MDWQ amounts as of November 1, which is the beginning of the winter heating season. 20 ITEM 3. Legal Proceedings. See Note 14 to the consolidated financial statements, which is incorporated in this Item 3 by reference. ITEM 4. Mine Safety Disclosures. Not applicable. PART II ITEM 5. Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities. Our stock trades on the New York Stock Exchange under the trading symbol “ATO.” The dividends paid per share of our common stock for fiscal 2023 and 2022 are listed below. Quarter ended: December 31 March 31 June 30 September 30 Fiscal 2023 Fiscal 2022 $ $ 0.74 $ 0.74 0.74 0.74 2.96 $ 0.68 0.68 0.68 0.68 2.72 Dividends are payable at the discretion of our Board of Directors out of legally available funds. The Board of Directors typically declares dividends in the same fiscal quarter in which they are paid. As of October 31, 2023, there were 9,543 holders of record of our common stock. Future payments of dividends, and the amounts of these dividends, will depend on our financial condition, results of operations, capital requirements and other factors. We sold no securities during fiscal 2023 that were not registered under the Securities Act of 1933, as amended. 21 Performance Graph The performance graph and table below compares the yearly percentage change in our total return to shareholders for the last five fiscal years with the total return of the S&P 500 Stock Index (S&P 500) and the total return of the S&P 500 Utilities Industry Index. The graph and table below assume that $100.00 was invested on September 30, 2018 in our common stock, the S&P 500 and the S&P 500 Utilities Industry Index, as well as a reinvestment of dividends paid on such investments throughout the period. Comparison of Five-Year Cumulative Total Return among Atmos Energy Corporation, S&P 500 Index and S&P 500 Utilities Industry Index $170 $160 $150 $140 $130 $120 $110 $100 $90 9/30/2018 9/30/2019 9/30/2020 9/30/2021 9/30/2022 9/30/2023 Atmos Energy Corporation S&P 500 Stock Index S&P 500 Utilities Stock Index Atmos Energy Corporation S&P 500 Stock Index S&P 500 Utilities Stock Index 9/30/2018 9/30/2019 9/30/2020 9/30/2021 9/30/2022 9/30/2023 100.00 100.00 100.00 123.80 104.25 127.10 106.18 120.05 120.79 100.53 156.07 134.09 119.08 131.92 141.56 127.01 160.44 131.63 Cumulative Total Return 22 The following table sets forth the number of securities authorized for issuance under our equity compensation plans at September 30, 2023. Number of securities to be issued upon exercise of outstanding options, warrants and rights Weighted-average exercise price of outstanding options, warrants and rights Number of securities remaining available for future issuance under equity compensation plans (excluding securities reflected in column (a)) (a) (b) (c) Equity compensation plans approved by security holders: 1998 Long-Term Incentive Plan Total equity compensation plans approved by security holders Equity compensation plans not approved by security holders Total 754,445 (1) $ 754,445 — 754,445 $ — — — — 631,409 631,409 — 631,409 (1) Comprised of a total of 298,748 time-lapse restricted stock units, 206,140 director share units and 249,557 performance-based restricted stock units at the target level of performance granted under our 1998 Long-Term Incentive Plan. ITEM 6. Reserved. ITEM 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations. INTRODUCTION This section provides management’s discussion of the financial condition, changes in financial condition and results of operations of Atmos Energy Corporation and its consolidated subsidiaries with specific information on results of operations and liquidity and capital resources. It includes management’s interpretation of our financial results, the factors affecting these results, the major factors expected to affect future operating results and future investment and financing plans. This discussion should be read in conjunction with our consolidated financial statements and notes thereto. Several factors exist that could influence our future financial performance, some of which are described in Item 1A above, “Risk Factors”. They should be considered in connection with evaluating forward-looking statements contained in this report or otherwise made by or on behalf of us since these factors could cause actual results and conditions to differ materially from those set out in such forward-looking statements. Cautionary Statement for the Purposes of the Safe Harbor under the Private Securities Litigation Reform Act of 1995 The statements contained in this Annual Report on Form 10-K may contain “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. All statements other than statements of historical fact included in this Report are forward-looking statements made in good faith by us and are intended to qualify for the safe harbor from liability established by the Private Securities Litigation Reform Act of 1995. When used in this Report, or any other of our documents or oral presentations, the words “anticipate”, “believe”, “estimate”, “expect”, “forecast”, “goal”, “intend”, “objective”, “plan”, “projection”, “seek”, “strategy” or similar words are intended to identify forward-looking statements. Such forward-looking statements are subject to risks and uncertainties that could cause actual results to differ materially from those expressed or implied in the statements relating to our strategy, operations, markets, services, rates, recovery of costs, availability of gas supply and other factors. These risks and uncertainties include the following: federal, state and local regulatory and political trends and decisions, including the impact of rate proceedings before various state regulatory commissions; increased federal regulatory oversight and potential penalties; possible increased federal, state and local regulation of the safety of our operations; possible significant costs and liabilities resulting from pipeline integrity and other similar programs and related repairs; the inherent hazards and risks involved in distributing, transporting and storing natural gas; the availability and accessibility of contracted gas supplies, interstate pipeline and/or storage services; increased competition from energy suppliers and alternative forms of energy; failure to attract and retain a qualified workforce; natural disasters, terrorist activities or other events and other risks and uncertainties discussed herein, all of which are difficult to predict and many of which are beyond our control; increased dependence on technology that may hinder the Company's business if such technologies fail; the threat of cyber-attacks or acts of cyber-terrorism that could disrupt our business operations and information technology systems or result in the loss or exposure of confidential or sensitive customer, employee 23 or Company information; the impact of new cybersecurity compliance requirements; adverse weather conditions; the impact of greenhouse gas emissions or other legislation or regulations intended to address climate change; the impact of climate change; the capital-intensive nature of our business; our ability to continue to access the credit and capital markets to execute our business strategy; market risks beyond our control affecting our risk management activities, including commodity price volatility, counterparty performance or creditworthiness and interest rate risk; the concentration of our operations in Texas; the impact of adverse economic conditions on our customers; changes in the availability and price of natural gas; and increased costs of providing health care benefits, along with pension and postretirement health care benefits and increased funding requirements. Accordingly, while we believe these forward-looking statements to be reasonable, there can be no assurance that they will approximate actual experience or that the expectations derived from them will be realized. Further, we undertake no obligation to update or revise any of our forward-looking statements whether as a result of new information, future events or otherwise. CRITICAL ACCOUNTING POLICIES Our consolidated financial statements were prepared in accordance with accounting principles generally accepted in the United States. Preparation of these financial statements requires us to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues and expenses and the related disclosures of contingent assets and liabilities. We base our estimates on historical experience and various other assumptions that we believe to be reasonable under the circumstances. Actual results may differ from estimates. Our significant accounting policies are discussed in Note 2 to our consolidated financial statements. The accounting policies discussed below are both important to the presentation of our financial condition and results of operations and require management to make difficult, subjective or complex accounting estimates. Accordingly, these critical accounting policies are reviewed periodically by the Audit Committee of the Board of Directors. Critical Accounting Policy Regulation Summary of Policy Our distribution and pipeline operations meet the criteria of a cost- based, rate-regulated entity under accounting principles generally accepted in the United States. Accordingly, the financial results for these operations reflect the effects of the ratemaking and accounting practices and policies of the various regulatory commissions to which we are subject. As a result, certain costs that would normally be expensed under accounting principles generally accepted in the United States are permitted to be capitalized or deferred on the balance sheet because it is probable they can be recovered through rates. Further, regulation may impact the period in which revenues or expenses are recognized. The amounts expected to be recovered or recognized are based upon historical experience and our understanding of the regulations. Discontinuing the application of this method of accounting for regulatory assets and liabilities or changes in the accounting for our various regulatory mechanisms could significantly increase our operating expenses as fewer costs would likely be capitalized or deferred on the balance sheet, which could reduce our net income. Factors Influencing Application of the Policy Decisions of regulatory authorities Issuance of new regulations or regulatory mechanisms Assessing the probability of the recoverability of deferred costs Continuing to meet the criteria of a cost-based, rate regulated entity for accounting purposes 24 Critical Accounting Policy Pension and other postretirement plans Impairment assessments Factors Influencing Application of the Policy General economic and market conditions Assumed investment returns by asset class Assumed future salary increases Assumed discount rate Projected timing of future cash disbursements Health care cost experience trends Participant demographic information Actuarial mortality assumptions Impact of legislation Impact of regulation General economic and market conditions Projected timing and amount of future discounted cash flows Judgment in the evaluation of relevant data Summary of Policy Pension and other postretirement plan costs and liabilities are determined on an actuarial basis using a September 30 measurement date 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. 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. The discount rate is utilized principally in calculating the actuarial present value of our pension and postretirement obligations and net periodic pension and postretirement benefit plan costs. 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 our annual pension and postretirement plan costs. 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 in 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 costs are not affected. Rather, this gain or loss reduces or increases future pension or postretirement plan costs over a period of approximately ten to twelve years. 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 methodology will delay the impact of current market fluctuations on the pension expense for the period. We estimate the assumed health care cost trend rate used in determining our postretirement net expense 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 our annual review of our participant census information as of the measurement date. We review the carrying value of our long-lived assets, including goodwill and identifiable intangibles, whenever events or changes in circumstance indicate that such carrying values may not be recoverable, and at least annually for goodwill, as required by U.S. accounting standards. The evaluation of our goodwill balances and other long-lived assets or identifiable assets for which uncertainty exists regarding the recoverability of the carrying value of such assets involves the assessment of future cash flows and external market conditions and other subjective factors that could impact the estimation of future cash flows including, but not limited to the commodity prices, the amount and timing of future cash flows, future growth rates and the discount rate. Unforeseen events and changes in circumstances or market conditions could adversely affect these estimates, which could result in an impairment charge. 25 RESULTS OF OPERATIONS Overview Atmos Energy strives to operate its businesses safely and reliably while delivering superior financial results. Our commitment to modernizing our natural gas distribution and transmission systems requires a significant level of capital spending. We have the ability to begin recovering a significant portion of these investments timely through rate designs and mechanisms that reduce or eliminate regulatory lag and separate the recovery of our approved rate from customer usage patterns. The execution of our capital spending program, the ability to recover these investments timely and our ability to access the capital markets to satisfy our financing needs are the primary drivers that affect our financial performance. The following table details our consolidated net income by segment during the last three fiscal years: Distribution segment Pipeline and storage segment Net income For the Fiscal Year Ended September 30 2023 2022 2021 (In thousands) $ $ 580,397 $ 521,977 $ 305,465 252,421 885,862 $ 774,398 $ 445,862 219,701 665,563 During fiscal 2023, we recorded net income of $885.9 million, or $6.10 per diluted share, compared to net income of $774.4 million, or $5.60 per diluted share in the prior year. The year-over-year increase in net income of $111.5 million largely reflects positive rate outcomes driven by safety and reliability spending, partially offset by increased line locating costs, system maintenance activities and an increase in depreciation expense and property taxes associated with increased capital investments. During the year ended September 30, 2023, we implemented ratemaking regulatory actions which resulted in an increase in annual operating income of $263.1 million. Excluding the impact of the refund of excess deferred income taxes resulting from previously enacted tax reform legislation, our total fiscal 2023 rate outcomes were $268.8 million. Additionally, we had ratemaking efforts in progress at September 30, 2023, seeking a total increase in annual operating income of $264.6 million. During fiscal year 2023, we refunded $160.3 million in excess deferred tax liabilities to customers. These refunds also reduced our income tax expense, resulting in an immaterial impact to our fiscal 2023 and 2022 results. Capital expenditures for fiscal 2023 were $2.8 billion. Over 85 percent was invested to improve the safety and reliability of our distribution and transportation systems, with a significant portion of this investment incurred under regulatory mechanisms that reduce regulatory lag to six months or less. During fiscal 2023, we completed approximately $1.6 billion of long-term debt and equity financing. As of September 30, 2023, our equity capitalization was 61.5 percent. As of September 30, 2023, we had approximately $2.7 billion in total liquidity, consisting of $15.4 million in cash and cash equivalents, $466.8 million in funds available through equity forward sales agreements and $2,252.5 million in undrawn capacity under our credit facilities. Distribution Segment The distribution segment is primarily comprised of our regulated natural gas distribution and related sales operations in eight states. The primary factors that impact the results of our distribution operations are our ability to earn our authorized rates of return, competitive factors in the energy industry and economic conditions in our service areas. Our ability to earn our authorized rates is based primarily on our ability to improve the rate design in our various ratemaking jurisdictions to minimize regulatory lag and, ultimately, separate the recovery of our approved rates from customer usage patterns. Improving rate design is a long-term process and is further complicated by the fact that we operate in multiple rate jurisdictions. The “Ratemaking Activity” section of this Form 10-K describes our current rate strategy, progress towards implementing that strategy and recent ratemaking initiatives in more detail. During fiscal 2023, we completed regulatory proceedings in our distribution segment resulting in a $178.2 million increase in annual operating income. Excluding the impact of the refund of excess deferred income taxes resulting from previously enacted tax reform legislation, our total fiscal 2023 annualized rate outcomes in our distribution segment were $183.8 million. Our distribution operations are also affected by the cost of natural gas. We are generally able to pass the cost of gas through to our customers without markup under purchased gas cost adjustment mechanisms; therefore, increases in the cost of gas are offset by a corresponding increase in revenues. Revenues in our Texas and Mississippi service areas include franchise fees and gross receipts taxes, which are calculated as a percentage of revenue (inclusive of gas costs). Therefore, the amount of 26 these taxes included in revenues is influenced by the cost of gas and the level of gas sales volumes. We record the associated tax expense as a component of taxes, other than income. The cost of gas typically does not have a direct impact on our operating income because these costs are recovered through our purchased gas cost adjustment mechanisms. However, higher gas costs may adversely impact our accounts receivable collections, resulting in higher bad debt expense. This risk is currently mitigated by rate design that allows us to collect from our customers the gas cost portion of our bad debt expense on approximately 80 percent of our residential and commercial revenues. Additionally, higher gas costs may require us to increase borrowings under our credit facilities, resulting in higher interest expense. Finally, higher gas costs, as well as competitive factors in the industry and general economic conditions may cause customers to conserve or, in the case of industrial consumers, to use alternative energy sources. Review of Financial and Operating Results Financial and operational highlights for our distribution segment for the fiscal years ended September 30, 2023, 2022 and 2021 are presented below. Operating revenues Purchased gas cost Operating expenses Operating income Other non-operating income (expense) Interest charges Income before income taxes Income tax expense Net income Consolidated distribution sales volumes — MMcf Consolidated distribution transportation volumes — MMcf Total consolidated distribution throughput — MMcf Consolidated distribution average cost of gas per Mcf sold For the Fiscal Year Ended September 30 2023 2022 2021 2023 vs. 2022 2022 vs. 2021 (In thousands, unless otherwise noted) $ 4,099,690 $ 4,035,194 $ 3,241,973 $ 64,496 $ 793,221 2,061,920 2,210,302 1,501,695 (148,382) 708,607 1,345,144 1,220,347 1,121,764 124,797 692,626 604,545 618,514 24,988 77,185 640,429 60,032 6,946 49,921 561,570 39,593 (20,694) 36,629 561,191 115,329 88,081 18,042 27,264 78,859 20,439 98,583 (13,969) 27,640 13,292 379 (75,736) $ 580,397 $ 521,977 $ 445,862 $ 58,420 $ 76,115 289,948 292,266 308,833 (2,318) (16,567) 152,963 152,709 152,513 254 196 442,911 444,975 461,346 (2,064) (16,371) $ 7.11 $ 7.56 $ 4.86 $ (0.45) $ 2.70 Fiscal year ended September 30, 2023 compared with fiscal year ended September 30, 2022 Operating income for our distribution segment increased 14.6 percent. Key drivers for the change in operating income include: • • • • a $166.4 million increase in rate adjustments, primarily in our Mid-Tex Division. an $18.4 million increase related to residential customer growth, primarily in our Mid-Tex Division, and increased industrial load. an $11.7 million increase in consumption, net of WNA. a $7.5 million decrease in refunds of excess deferred taxes to customers, which is substantially offset in income tax expense. Partially offset by: • • • • a $65.4 million increase in depreciation expense and property taxes associated with increased capital investments. a $20.2 million increase in line locate spending, primarily in our Mid-Tex Division. a $4.9 million increase in bad debt expense primarily due to higher customer bills. a $21.6 million increase in other operation and maintenance expense primarily due to increased insurance premiums, travel spending, information technology spending and other administrative costs. Other non-operating income increased $18.0 million primarily due to a higher allowance for funds used during construction (AFUDC) related to increased capital spending as well as unrealized gains on equity investments in the current 27 period compared to unrealized losses on equity investments in the prior period. Interest charges increased $27.3 million primarily due to the issuance of long-term debt during the first quarter of fiscal 2023. The fiscal year ended September 30, 2022 compared with fiscal year ended September 30, 2021 for our distribution segment is described in Item 7 "Management's Discussion and Analysis of Financial Condition and Results of Operations" of our Annual Report on Form 10-K for the fiscal year ended September 30, 2022. The following table shows our operating income by distribution division, in order of total rate base, for the fiscal years ended September 30, 2023, 2022 and 2021. The presentation of our distribution operating income is included for financial reporting purposes and may not be appropriate for ratemaking purposes. Mid-Tex Kentucky/Mid-States Louisiana West Texas Mississippi Colorado-Kansas Other Total For the Fiscal Year Ended September 30 2023 2022 2021 2023 vs. 2022 2022 vs. 2021 $ 345,545 $ 315,644 $ 310,293 $ 29,901 $ (In thousands) 87,258 80,942 62,351 78,517 40,674 84,098 73,486 53,604 65,947 26,000 (2,661) (14,234) 73,259 72,388 51,104 65,337 32,778 13,355 3,160 7,456 8,747 12,570 14,674 11,573 5,351 10,839 1,098 2,500 610 (6,778) (27,589) $ 692,626 $ 604,545 $ 618,514 $ 88,081 $ (13,969) Pipeline and Storage Segment Our pipeline and storage segment consists of the pipeline and storage operations of our Atmos Pipeline–Texas Division (APT) and our natural gas transmission operations in Louisiana. APT is one of the largest intrastate pipeline operations in Texas with a heavy concentration in the established natural gas producing areas of central, northern and eastern Texas, extending into or near the major producing areas of the Barnett Shale, the Texas Gulf Coast and the Permian Basin of West Texas. APT 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. Over 80 percent of this segment's revenues are derived from these APT services. As part of its pipeline operations, APT owns and operates five underground storage facilities in Texas. 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. The demand fee charged to our Louisiana distribution division for these services is subject to regulatory approval by the Louisiana Public Service Commission. We also manage two asset management plans, which have been approved by applicable state regulatory commissions. Generally, these asset management plans require us to share with our distribution customers a significant portion of the cost savings earned from these arrangements. Our pipeline and storage segment is impacted by seasonal weather patterns, competitive factors in the energy industry and economic conditions in our Texas and Louisiana service areas. Natural gas prices do not directly impact the results of this segment as revenues are derived from the transportation and storage of natural gas. However, natural gas prices and demand for natural gas could influence the level of drilling activity in the supply areas that we serve, which may influence the level of throughput we may be able to transport on our pipelines. Further, natural gas price differences between the various hubs that we serve in Texas could influence the volumes of gas transported for shippers through our Texas pipeline system and rates for such transportation. The results of APT are also significantly impacted by the natural gas requirements of its local distribution company customers. Additionally, its operations may be impacted by the timing of when costs and expenses are incurred and when these costs and expenses are recovered through its tariffs. APT annually uses GRIP to recover capital costs incurred in the prior calendar year. On February 10, 2023, APT made a GRIP filing that covered changes in net property, plant and equipment investment from January 1, 2022 through December 31, 2022 with a requested increase in operating income of $84.9 million. On May 17, 2023, the Texas Railroad Commission (RRC) approved the Company's GRIP filing. Additionally, GRIP requires a utility to file a statement of intent at least once every five years to review its costs and expenses, including capital costs filed for recovery under GRIP. On May 19, 2023, APT filed its statement of intent seeking $107.4 million in additional annual operating income. On October 24, 2023, APT and the intervening parties in its general rate case filed a Joint Notice of Settlement and Proposed Order. See "Ratemaking Activity" above for further information. 28 The demand fee our Louisiana natural gas transmission pipeline charges to our Louisiana distribution division increases five percent annually and has been approved by the Louisiana Public Service Commission until September 30, 2027. Review of Financial and Operating Results Financial and operational highlights for our pipeline and storage segment for the fiscal years ended September 30, 2023, 2022 and 2021 are presented below. Mid-Tex / Affiliate transportation revenue Third-party transportation revenue Other revenue Total operating revenues Total purchased gas cost Operating expenses Operating income Other non-operating income Interest charges Income before income taxes Income tax expense Net income Gross pipeline transportation volumes — MMcf Consolidated pipeline transportation volumes — MMcf For the Fiscal Year Ended September 30 2023 2022 2021 2023 vs. 2022 2022 vs. 2021 (In thousands, unless otherwise noted) $ 621,987 $ 546,038 $ 497,730 $ 75,949 $ 48,308 154,018 9,169 785,174 136,907 10,715 693,660 127,874 11,743 637,347 (1,220) (1,583) 1,582 411,873 374,521 44,787 60,096 359,212 53,747 378,806 316,437 26,791 52,890 290,338 37,917 349,281 286,484 18,549 46,925 258,108 38,407 17,111 (1,546) 91,514 363 33,067 58,084 17,996 7,206 68,874 15,830 9,033 (1,028) 56,313 (3,165) 29,525 29,953 8,242 5,965 32,230 (490) $ 305,465 $ 252,421 $ 219,701 $ 53,044 $ 32,720 834,847 776,608 799,724 58,239 (23,116) 635,508 580,488 585,857 55,020 (5,369) Fiscal year ended September 30, 2023 compared with fiscal year ended September 30, 2022 Operating income for our pipeline and storage segment increased 18.4 percent. Key drivers for the change in operating income include: • • an $87.3 million increase due to rate adjustments from GRIP filings approved in May 2022 and 2023. The increase in rates was driven by increased safety and reliability spending. a $5.2 million net increase in APT's through-system activities primarily associated with increased volumes. Partially offset by: • a $33.1 million increase in operating expenses primarily attributable to increased depreciation expense and property taxes associated with increased capital investments, employee-related costs, and pipeline inspection activities. Other non-operating income increased $18.0 million primarily due to higher AFUDC largely as a result of increased capital spending. Interest charges increased $7.2 million primarily due to the issuance of long-term debt during the first quarter of fiscal 2023. The fiscal year ended September 30, 2022 compared with fiscal year ended September 30, 2021 for our pipeline and storage segment is described in Item 7 "Management's Discussion and Analysis of Financial Condition and Results of Operations" of our Annual Report on Form 10-K for the fiscal year ended September 30, 2022. INFLATION REDUCTION ACT OF 2022 In August 2022, the U.S. government enacted the Inflation Reduction Act of 2022 (the Inflation Reduction Act) into law. The Inflation Reduction Act includes a new corporate alternative minimum tax (the Corporate AMT) of 15% on the adjusted financial statement income (AFSI) of corporations with average AFSI exceeding $1.0 billion over a three-year period. We currently anticipate this tax will apply to us within the next three years, and it could materially impact our cash tax payments. However, we don't anticipate any impact to our results of operations. Also, the Inflation Reduction Act imposes a methane emissions charge for methane emissions in excess of 25,000 metric tons carbon dioxide equivalent per year. Based on our preliminary evaluation of the regulations, we currently do not anticipate this provision of the Inflation Reduction Act will have a material impact on our financial position, results of operations or cash flows. Additionally, the Inflation Reduction Act 29 imposes an excise tax of 1% tax on the fair market value of net stock repurchases made after December 31, 2022. The impact of this provision will be dependent on the extent of share repurchases made in future periods. LIQUIDITY AND CAPITAL RESOURCES The liquidity required to fund our working capital, capital expenditures and other cash needs is provided from a combination of internally generated cash flows and external debt and equity financing. Additionally, we have a $1.5 billion commercial paper program and four committed revolving credit facilities with $2.5 billion in total availability from third-party lenders. The commercial paper program and credit facilities 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. Additionally, we have various uncommitted trade credit lines with our gas suppliers that we utilize to purchase natural gas on a monthly basis. We have a shelf registration statement on file with the Securities and Exchange Commission (SEC) that allows us to issue up to $5.0 billion in common stock and/or debt securities. As of the date of this report, $3.1 billion of securities remained available for issuance under the shelf registration statement, which expires March 31, 2026. We also have an at-the-market (ATM) equity sales program that allows us to 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 in connection with the ATM equity sales program), which expires March 31, 2026. At September 30, 2023, $760.5 million of equity is available for issuance under this ATM equity sales program. Additionally, as of September 30, 2023, we had $466.8 million in available proceeds from outstanding forward sale agreements. On September 26, 2023, we settled $700 million of forward starting interest rate swaps associated with a debt issuance that was completed on October 10, 2023. The following table summarizes our existing forward starting interest rate swaps as of September 30, 2023. Planned Debt Issuance Date Amount Hedged Effective Interest Rate Fiscal 2025 Fiscal 2026 (In thousands) 600,000 300,000 900,000 $ $ 1.75 % 2.16 % The liquidity provided by these sources is expected to be sufficient to fund the Company's working capital needs and capital expenditures program. Additionally, we expect to continue to be able to obtain financing upon reasonable terms as necessary. The following table presents our capitalization as of September 30, 2023 and 2022: Short-term debt Long-term debt (1) Shareholders’ equity (2) Total capitalization, including short-term debt September 30 2023 2022 (In thousands, except percentages) $ 241,933 1.4 % $ 184,967 6,555,701 37.1 % 7,962,104 10,870,064 $ 17,667,698 61.5 % 9,419,091 100.0 % $ 17,566,162 100.0 % 1.1 % 45.3 % 53.6 % Inclusive of our finance leases, but exclusive of AEK's securitized long-term debt. (1) (2) Excluding the $2.2 billion of incremental financing issued to pay for the purchased gas costs incurred during Winter Storm Uri, our equity capitalization ratio would have been 61.3% at September 30, 2022. Cash Flows Our internally generated funds may change in the future due to a number of factors, some of which we cannot control. These factors include regulatory changes, the price for our services, the demand for such products and services, margin requirements resulting from significant changes in commodity prices, operational risks and other factors. Cash flows from operating, investing and financing activities for the years ended September 30, 2023, 2022 and 2021 are presented below. 30 Total cash provided by (used in) Operating activities Investing activities Financing activities For the Fiscal Year Ended September 30 2023 2022 2021 2023 vs. 2022 2022 vs. 2021 (In thousands) $ 3,459,743 $ 977,584 $ (1,084,251) $ 2,482,159 $ 2,061,835 (2,795,280) (2,429,958) (1,963,655) (365,322) (466,303) (696,769) 1,387,205 3,143,821 (2,083,974) (1,756,616) Change in cash and cash equivalents and restricted cash and cash equivalents Cash and cash equivalents and restricted cash and cash equivalents at beginning of period Cash and cash equivalents and restricted cash and cash equivalents at end of period (32,306) (65,169) 95,915 32,863 (161,084) 51,554 116,723 20,808 (65,169) 95,915 $ 19,248 $ 51,554 $ 116,723 $ (32,306) $ (65,169) Cash flows for the fiscal year ended September 30, 2022 compared with fiscal year ended September 30, 2021 is described in Item 7 "Management's Discussion and Analysis of Financial Condition and Results of Operations" of our Annual Report on Form 10-K for the fiscal year ended September 30, 2022. Cash flows from operating activities For the fiscal year ended September 30, 2023, cash flow provided by operating activities was $3,459.7 million compared with $977.6 million in the prior year. Fiscal 2023 operating cash flow included $2,021.9 million of cash received as a result of the conclusion of Texas securitization proceedings. Excluding this cash inflow, operating cash flow in fiscal 2023 was $1,437.8 million. The year-over-year increase in operating cash flow reflects the positive effects of successful rate case outcomes achieved in fiscal 2022 and 2023 and decreased purchases of gas stored underground. Cash flows from investing activities Our capital expenditures are primarily used to improve the safety and reliability of our distribution and transmission system through pipeline replacement and system modernization and to enhance and expand our system to meet customer needs. Over the last three fiscal years, approximately 87 percent of our capital spending has been committed to improving the safety and reliability of our system. For the fiscal year ended September 30, 2023, we had $2.8 billion in capital expenditures compared with $2.4 billion for the fiscal year ended September 30, 2022. Capital spending increased by $361.6 million, or 15 percent, as a result of planned increases to modernize our system and improve pipeline system safety and reliability in Texas and further enhance the safety, reliability, versatility and supply diversification of APT's system. Cash flows from financing activities Our financing activities used $696.8 million of cash for fiscal year 2023 compared with $1,387.2 million of cash provided by financing activities for fiscal year 2022. During the fiscal year ended September 30, 2023, we repaid $2.2 billion in long-term debt, and we received approximately $1.6 billion in net proceeds from the issuance of long-term debt and equity. We completed a public offering of $500 million of 5.75% senior notes due October 2052 and $300 million of 5.45% senior notes due October 2032, and received net proceeds from the offering, after the underwriting discount and offering expenses, of $789.4 million. Additionally, during the fiscal year ended September 30, 2023, we settled 7,272,261 shares that had been sold on a forward basis for net proceeds of $806.9 million. The net proceeds were used primarily to support capital spending and for other general corporate purposes. We also received $171.1 million from the settlement of forward starting interest rate swaps related to a debt issuance completed in October 2023. Cash dividends increased due to an 8.8 percent increase in our dividend rate and an increase in shares outstanding. Finally, Atmos Energy Kansas Securitization I, LLC, a special-purpose, wholly-owned subsidiary of Atmos Energy, issued $95 million in securitized long-term debt. During the fiscal year ended September 30, 2022, we received $1.6 billion in net proceeds from the issuance of long-term debt and equity. We completed a public offering of $600 million of 2.85% senior notes due February 2052. We also completed a public offering of $200 million of 2.625% senior notes due September 2029 that were used to repay our $200 million floating- rate term loan. Additionally, during the year ended September 30, 2022, we settled 7,907,833 shares that had been sold on a forward basis for net proceeds of $776.8 million. The net proceeds were used primarily to support capital spending and for other general corporate purposes. We also received $197.1 million from the settlement of forward starting interest rate swaps related to a debt issuance completed in October 2022. Additionally, cash dividends increased due to an 8.8 percent increase in our dividend rate and an increase in shares outstanding. 31 The following table shows the number of shares issued for the fiscal years ended September 30, 2023, 2022 and 2021: Shares issued: Direct Stock Purchase Plan Retirement Savings Plan and Trust 1998 Long-Term Incentive Plan (LTIP) Equity Issuance (1) Total shares issued For the Fiscal Year Ended September 30 2023 2022 2021 64,871 69,716 189,337 7,272,261 7,596,185 68,693 72,339 427,929 7,907,883 8,476,844 79,921 84,265 242,216 6,130,875 6,537,277 (1) Share amounts do not include shares issued under forward sale agreements until the shares have been settled. Credit Ratings Our credit ratings directly affect our ability to obtain short-term and long-term financing, in addition to the cost of such financing. In determining our credit ratings, the rating agencies consider a number of quantitative factors, including but not limited to, debt to total capitalization, operating cash flow relative to outstanding debt, operating cash flow coverage of interest and operating cash flow less dividends to debt. In addition, the rating agencies consider qualitative factors such as consistency of our earnings over time, the risks associated with our business and the regulatory structures that govern our rates in the states where we operate. Our debt is rated by two rating agencies: Standard & Poor’s Corporation (S&P) and Moody’s Investors Service (Moody’s). As of September 30, 2023, our outlook and current debt ratings, which are all considered investment grade are as follows: Senior unsecured long-term debt Short-term debt Outlook S&P A- A-2 Stable Moody’s A1 P-1 Stable A significant degradation in our operating performance or a significant reduction in our liquidity caused by more limited access to the private and public credit markets as a result of deteriorating global or national financial and credit conditions could trigger a negative change in our ratings outlook or even a reduction in our credit ratings by the two credit rating agencies. This would mean more limited access to the private and public credit markets and an increase in the costs of such borrowings. A credit rating is not a recommendation to buy, sell or hold securities. The highest investment grade credit rating is AAA for S&P and Aaa for Moody’s. The lowest investment grade credit rating is BBB- for S&P and Baa3 for Moody’s. Our credit ratings may be revised or withdrawn at any time by the rating agencies, and each rating should be evaluated independently of any other rating. There can be no assurance that a rating will remain in effect for any given period of time or that a rating will not be lowered, or withdrawn entirely, by a rating agency if, in its judgment, circumstances so warrant. Debt Covenants We were in compliance with all of our debt covenants as of September 30, 2023. Our debt covenants are described in Note 8 to the consolidated financial statements. 32 Contractual Obligations and Commercial Commitments The following table provides information about contractual obligations and commercial commitments at September 30, 2023. Payments Due by Period Total Less than 1 year 1-3 years 3-5 years More than 5 years (In thousands) Contractual Obligations Long-term debt (1) Short-term debt (1) Securitized long-term debt Interest charges (2) Interest charges on securitized long-term debt Finance leases (3) Operating leases (4) Financial instrument obligations (5) Pension and postretirement benefit plan contributions (6) Uncertain tax positions (7) $ 6,560,000 $ — $ 10,000 $ 650,000 $ 5,900,000 241,933 95,000 4,981,621 26,779 69,880 277,989 15,408 310,710 58,638 241,933 9,922 265,077 5,709 3,375 41,325 14,584 31,784 — — 16,842 532,354 8,134 6,940 59,035 824 80,759 58,638 — 18,647 — 49,589 514,413 3,669,777 6,329 7,203 44,721 — 6,607 52,362 132,908 — 52,600 145,567 — — Total contractual obligations $ 12,637,958 $ 613,709 $ 773,526 $ 1,293,913 $ 9,956,810 (1) Long-term and short-term debt excludes our finance lease obligations, which are separately reported within this table. See Note 8 to the consolidated financial statements for further details. Interest charges were calculated using the coupon rate for each debt issuance through the contractual maturity date. (2) (3) Finance lease payments shown above include interest totaling $19.5 million. See Note 7 to the consolidated financial statements. (4) Operating lease payments shown above include interest totaling $47.7 million. See Note 7 to the consolidated financial statements. (5) Represents liabilities for natural gas commodity financial instruments that were valued as of September 30, 2023. The ultimate settlement amounts of these remaining liabilities are unknown because they are subject to continuing market risk until the financial instruments are settled. (6) Represents expected contributions to our defined benefit and postretirement benefit plans, which are discussed in Note 11 to the consolidated financial statements. (7) Represents liabilities associated with uncertain tax positions claimed or expected to be claimed on tax returns. The amount does not include interest and penalties that may be applied to these positions. See Note 15 to the consolidated financial statements for further details. We 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 individual contracts. 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 market and fixed prices. At September 30, 2023, we were committed to purchase 65.5 Bcf within one year and 72.3 Bcf within two to three years under indexed contracts. At September 30, 2023, we were committed to purchase 20.6 Bcf within one year under fixed price contracts with a weighted average price of $2.80 per Mcf. Risk Management Activities In our distribution and pipeline and storage segments, we use a combination of physical storage, fixed physical contracts and fixed financial contracts to reduce our exposure to unusually large winter-period gas price increases. Additionally, we manage interest rate risk by entering into financial instruments to effectively fix the Treasury yield component of the interest cost associated with anticipated financings. We record our financial instruments as a component of risk management assets and liabilities, which are classified as current or noncurrent based upon the anticipated settlement date of the underlying financial instrument. Substantially all of our financial instruments are valued using external market quotes and indices. 33 The following table shows the components of the change in fair value of our financial instruments for the fiscal year ended September 30, 2023 (in thousands): Fair value of contracts at September 30, 2022 Contracts realized/settled Fair value of new contracts Other changes in value Fair value of contracts at September 30, 2023 Netting of cash collateral Cash collateral and fair value of contracts at September 30, 2023 $ $ 377,862 (174,107) 5,379 161,122 370,256 — 370,256 The fair value of our financial instruments at September 30, 2023, is presented below by time period and fair value source: Source of Fair Value Fair Value of Contracts at September 30, 2023 Maturity in years Less than 1 1-3 4-5 (In thousands) Greater than 5 Total Fair Value Prices actively quoted Prices based on models and other valuation methods Total Fair Value $ (10,513) $ 380,769 $ — — $ (10,513) $ 380,769 $ — $ — — $ — $ 370,256 — — — $ 370,256 RECENT ACCOUNTING DEVELOPMENTS Recent accounting developments and their impact on our financial position, results of operations and cash flows are described in Note 2 to the consolidated financial statements. ITEM 7A. Quantitative and Qualitative Disclosures About Market Risk. We are exposed to risks associated with commodity prices and interest rates. Commodity price risk is the potential loss that we may incur as a result of changes in the fair value of a particular instrument or commodity. Interest-rate risk is the potential increased cost we could incur when we issue debt instruments or to provide financing and liquidity for our business activities. Additionally, interest-rate risk could affect our ability to issue cost effective equity instruments. We conduct risk management activities in our distribution and pipeline and storage segments. In our distribution segment, we use 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. Our risk management activities and related accounting treatment are described in further detail in Note 16 to the consolidated financial statements. Additionally, our earnings are affected by changes in short-term interest rates as a result of our issuance of short-term commercial paper and our other short-term borrowings. Commodity Price Risk We purchase natural gas for our distribution operations. Substantially all of the costs of gas purchased for distribution operations are recovered from our customers through purchased gas cost adjustment mechanisms. Therefore, our distribution operations have limited commodity price risk exposure. Interest Rate Risk Our earnings are exposed to changes in short-term interest rates associated with our short-term commercial paper program and other short-term borrowings. We use a sensitivity analysis to estimate our short-term interest rate risk. For purposes of this analysis, we estimate our short-term interest rate risk as the difference between our actual interest expense for the period and estimated interest expense for the period assuming a hypothetical average one percent increase in the interest rates associated with our short-term borrowings. Had interest rates associated with our short-term borrowings increased by an average of one percent, our interest expense would not have materially increased during 2023. 34 ITEM 8. Financial Statements and Supplementary Data. Index to financial statements and financial statement schedules: Report of independent registered public accounting firm (PCAOB ID: 42) Financial statements and supplementary data: Consolidated balance sheets at September 30, 2023 and 2022 Consolidated statements of comprehensive income for the years ended September 30, 2023, 2022 and 2021 Consolidated statements of shareholders' equity for the years ended September 30, 2023, 2022 and 2021 Consolidated statements of cash flow for the years ended September 30, 2023, 2022 and 2021 Notes to consolidated financial statements Page 36 38 39 40 41 43 All 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. 35 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, 2023 and 2022, the related consolidated statements of comprehensive income, shareholders’ equity and cash flows for each of the three years in the period ended September 30, 2023, and the related notes (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 at September 30, 2023 and 2022, and the results of its operations and its cash flows for each of the three years in the period ended September 30, 2023, in conformity with U.S. 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, 2023, 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 14, 2023 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 U.S. 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 included 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 consolidated 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. 36 Description of the Matter Regulation As discussed in Note 3 to the consolidated financial statements, the Company’s 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 they operate. The Company’s accounting policies recognize the financial effects of the ratemaking and accounting practices and policies of the various regulatory commissions and are subject to accounting principles for rate- regulated activities. As a result, certain costs are permitted to be capitalized rather than expensed because they can be recovered through rates. The Company records 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 the Company’s historical experience and understanding of the regulations. As described in Note 3, the proceeds received related to the securitization of the costs related to the Winter Storm Uri event reflected the recovery of the related regulatory asset. As of September 30, 2023, there were $554.9 million of deferred costs included in regulatory assets and $1,284.3 million of regulatory liabilities awaiting cash outflow or potential refund. Auditing the effects of regulatory matters is complex as it requires specialized knowledge of rate-regulated activities and assessments as to matters that could affect the recording or updating of regulatory assets and liabilities, including the securitization of the costs related to Winter Storm Uri. How We Addressed the Matter in Our Audit We obtained an understanding, evaluated the design, and tested the operating effectiveness of internal controls over the Company's accounting for regulatory assets and liabilities, including, among others, controls over management's assessment of the likelihood of approval by regulators for new matters and controls over the evaluation on rulings with regulatory bodies on existing regulatory assets and liabilities, including factors that may affect the timing or nature of recoverability. We performed audit procedures that included, among others, examining evidence of correspondence with regulatory bodies to test that the Company appropriately evaluated information obtained from regulatory rulings. For example, we assessed the recoverability and completeness of various regulatory assets and liabilities, considering information obtained from regulatory rulings. In addition, we tested that amortization of regulatory assets and liabilities corresponded to relevant regulatory rulings. /s/ Ernst & Young LLP We have served as the Company’s auditor since 1983. Dallas, Texas November 14, 2023 37 ATMOS ENERGY CORPORATION CONSOLIDATED BALANCE SHEETS September 30 2023 2022 (In thousands, except share data) Property, plant and equipment Construction in progress ASSETS Less accumulated depreciation and amortization Net property, plant and equipment Current assets Cash and cash equivalents Restricted cash and cash equivalents (See Note 10) Cash and cash equivalents and restricted cash and cash equivalents Accounts receivable, less allowance for uncollectible accounts of $40,840 in 2023 and $49,993 in 2022 Gas stored underground Other current assets (See Note 3) Total current assets Securitized intangible asset, less accumulated amortization of $1,398 in 2023 (See Note 10) Goodwill Deferred charges and other assets CAPITALIZATION AND LIABILITIES Shareholders’ equity Common stock, no par value (stated at $0.005 per share); 200,000,000 shares authorized; issued and outstanding: 2023 — 148,492,783 shares; 2022 — 140,896,598 shares Additional paid-in capital Accumulated other comprehensive income Retained earnings Shareholders’ equity Long-term debt Securitized long-term debt (See Note 10) Total capitalization Commitments and contingencies (See Note 14) Current liabilities Accounts payable and accrued liabilities Other current liabilities Short-term debt Current maturities of long-term debt Current maturities of securitized long-term debt (See Note 10) Total current liabilities Deferred income taxes Regulatory excess deferred taxes (See Note 15) Regulatory cost of removal obligation Deferred credits and other liabilities $ $ $ $ 21,958,447 $ 939,927 22,898,374 3,291,791 19,606,583 15,404 3,844 19,248 328,654 245,830 292,036 885,768 92,202 731,257 1,201,158 22,516,968 $ 742 $ 6,684,120 518,528 3,666,674 10,870,064 6,554,133 85,078 17,509,275 336,083 763,086 241,933 1,568 9,922 1,352,592 2,304,974 253,212 497,017 599,898 22,516,968 $ 19,402,271 835,868 20,238,139 2,997,900 17,240,239 51,554 — 51,554 363,708 357,941 2,274,490 3,047,693 — 731,257 1,173,800 22,192,989 704 5,838,118 369,112 3,211,157 9,419,091 5,760,647 — 15,179,738 496,019 720,157 184,967 2,201,457 — 3,602,600 1,999,505 385,213 487,631 538,302 22,192,989 See accompanying notes to consolidated financial statements. 38 ATMOS ENERGY CORPORATION CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME Operating revenues Distribution segment Pipeline and storage segment Intersegment eliminations Total operating revenues Purchased gas cost Distribution segment Pipeline and storage segment Intersegment eliminations Total purchased gas cost Operation and maintenance expense Depreciation and amortization expense Taxes, other than income Operating income Other non-operating income (expense) Interest charges Income before income taxes Income tax expense Net income Basic net income per share Diluted net income per share Weighted average shares outstanding: Basic Diluted Net income Other comprehensive income (loss), net of tax Net unrealized holding gains (losses) on available-for-sale securities, net of tax of $37, $(157) and $(55) Cash flow hedges: Amortization and unrealized gains on interest rate agreements, net of tax of $43,148, $86,664 and $36,875 Total other comprehensive income Total comprehensive income Year Ended September 30 2023 2022 2021 (In thousands, except per share data) $ 4,099,690 $ 4,035,194 $ 3,241,973 785,174 693,660 (609,507) (527,192) 4,275,357 4,201,662 2,061,920 2,210,302 (1,220) (1,583) (608,527) (526,063) 1,452,173 1,682,656 764,906 604,327 386,804 1,067,147 69,775 137,281 999,641 113,779 710,161 535,655 352,208 920,982 33,737 102,811 851,908 77,510 $ $ $ 885,862 $ 774,398 $ 6.10 $ 6.10 $ 5.61 $ 5.60 $ 145,121 145,166 137,830 138,096 637,347 (471,830) 3,407,490 1,501,695 1,582 (470,560) 1,032,717 679,019 477,977 312,779 904,998 (2,145) 83,554 819,299 153,736 665,563 5.12 5.12 129,779 129,834 $ 885,862 $ 774,398 $ 665,563 126 (542) (191) 149,290 149,416 299,851 299,309 $ 1,035,278 $ 1,073,707 $ 127,583 127,392 792,955 See accompanying notes to consolidated financial statements. 39 ATMOS ENERGY CORPORATION CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY Common stock Number of Shares Stated Value Additional Paid-in Capital Accumulated Other Comprehensive Income (Loss) Retained Earnings Total (In thousands, except share and per share data) 125,882,477 $ 629 $ 4,377,149 $ (57,589) $ 2,471,014 $ 6,791,203 — — — — — — — — — — 665,563 127,392 — 665,563 127,392 — (323,904) (323,904) Balance, September 30, 2020 Net income Other comprehensive income Cash dividends ($2.50 per share) Common stock issued: Public offering Direct stock purchase plan Retirement savings plan 1998 Long-term incentive plan 6,130,875 31 606,636 79,921 — 84,265 242,216 1 1 7,715 8,125 3,091 — — — — — — — — — — 606,667 7,715 8,126 3,092 21,035 Employee stock-based compensation — — 21,035 Balance, September 30, 2021 Net income Other comprehensive income Cash dividends ($2.72 per share) Common stock issued: Public offering Direct stock purchase plan Retirement savings plan 1998 Long-term incentive plan Employee stock-based compensation Balance, September 30, 2022 Net income Other comprehensive income Cash dividends ($2.96 per share) Common stock issued: Public offering Direct stock purchase plan Retirement savings plan 1998 Long-term incentive plan Employee stock-based compensation Balance, September 30, 2023 132,419,754 662 5,023,751 69,803 2,812,673 7,906,889 — — — — — — — — — — 774,398 299,309 — 774,398 299,309 — (375,914) (375,914) 7,907,883 40 776,765 68,693 — 72,339 — 427,929 2 7,495 7,908 2,396 — — 19,803 — — — — — — — — — — 776,805 7,495 7,908 2,398 19,803 140,896,598 704 5,838,118 369,112 3,211,157 9,419,091 — — — — — — — — — — 885,862 149,416 — 885,862 149,416 — (430,345) (430,345) 7,272,261 36 806,913 64,871 — 69,716 189,337 1 1 7,429 7,965 2,107 — — 21,588 — — — — — — — — — — 806,949 7,429 7,966 2,108 21,588 148,492,783 $ 742 $ 6,684,120 $ 518,528 $ 3,666,674 $ 10,870,064 See accompanying notes to consolidated financial statements. 40 ATMOS ENERGY CORPORATION CONSOLIDATED STATEMENTS OF CASH FLOWS CASH FLOWS FROM OPERATING ACTIVITIES Net income Adjustments to reconcile net income to net cash provided by (used in) operating activities: Depreciation and amortization Deferred income taxes Stock-based compensation Amortization of debt issuance costs Equity component of AFUDC Other Changes in assets and liabilities: (Increase) decrease in accounts receivable (Increase) decrease in gas stored underground (Increase) decrease in Winter Storm Uri current regulatory asset (see Note 3) Increase in other current assets Increase in Winter Storm Uri long-term regulatory asset (see Note 3) (Increase) decrease in deferred charges and other assets Increase (decrease) in accounts payable and accrued liabilities Increase (decrease) in other current liabilities Increase (decrease) in deferred credits and other liabilities Net cash provided by (used in) operating activities CASH FLOWS USED IN INVESTING ACTIVITIES Capital expenditures Purchases of debt and equity securities Proceeds from sale of debt and equity securities Maturities of debt securities Other, net Net cash used in investing activities Year Ended September 30 2023 2022 2021 (In thousands) $ 885,862 $ 774,398 $ 665,563 604,327 108,215 10,178 3,639 (64,019) (591) 535,655 53,651 10,743 9,141 (45,505) 3,265 477,977 155,355 11,255 14,030 (32,749) 3,731 46,859 112,111 (34,325) (179,825) (113,665) (66,166) 2,021,889 (36,041) — (172,586) (132,575) 30,687 41,788 3,459,743 — (65,979) — 13,287 40,394 (152,274) 14,958 977,584 (2,805,973) (46,789) 25,134 13,340 19,008 (2,795,280) (2,444,420) (28,285) 4,872 27,586 10,289 (2,429,958) (2,003,659) (84,705) (76,652) 136,809 104,242 (166,268) (109,349) (1,084,251) (1,969,540) (49,879) 14,957 28,850 11,957 (1,963,655) See accompanying notes to consolidated financial statements. 41 ATMOS ENERGY CORPORATION CONSOLIDATED STATEMENTS OF CASH FLOWS (continued) Year Ended September 30 2023 2022 2021 (In thousands) CASH FLOWS FROM FINANCING ACTIVITIES Net increase in short-term debt Proceeds from issuance of long-term debt, net of premium/discount Proceeds from issuance of securitized long-term debt by AEK Net proceeds from equity offering Issuance of common stock through stock purchase and employee retirement plans Settlement of interest rate swaps Proceeds from term loan Repayment of term loan Repayment of long-term debt Cash dividends paid Debt issuance costs Securitized debt issuance costs Other 56,966 797,258 95,000 806,949 15,395 171,145 2,020,000 (2,020,000) (2,200,000) (430,345) (7,864) (1,273) — 184,967 798,802 — 776,805 15,403 197,073 — — (200,000) (375,914) (8,196) — (1,735) Net cash provided by (used in) financing activities (696,769) 1,387,205 — 2,797,346 — 606,667 15,841 62,159 — — — (323,904) (14,288) — — 3,143,821 Net increase (decrease) in cash and cash equivalents and restricted cash and cash equivalents Cash and cash equivalents and restricted cash and cash equivalents at beginning of year Cash and cash equivalents and restricted cash and cash equivalents at end of year (32,306) (65,169) 95,915 51,554 116,723 20,808 $ 19,248 $ 51,554 $ 116,723 See accompanying notes to consolidated financial statements. 42 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 3.3 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 Atmos Energy Kentucky/Mid-States Division Atmos Energy Louisiana Division Atmos Energy Mid-Tex Division Atmos Energy Mississippi Division Atmos Energy West Texas Division Colorado, Kansas Kentucky, Tennessee, Virginia Louisiana Texas, including the Dallas/Fort Worth metropolitan area Mississippi West Texas 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. Reclassification — Certain reclassifications have been made to prior period amounts to conform to current period presentation. 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, risk management and trading activities and fair value measurements. 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. 43 ATMOS ENERGY CORPORATION NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued) 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 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 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. 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. 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. Restricted cash and cash equivalents — Restricted cash and cash equivalents consists of funds that are contractually or legally restricted as to usage or withdrawal and have been presented separately from cash and cash equivalents on our consolidated balance sheets. Restricted cash and cash equivalents accounts were established for payment of Securitized Utility Tariff Bonds issuance costs and payment of debt service on those bonds as well as certain ongoing costs of Atmos Energy Kansas Securitization I, LLC (AEK). Accounts receivable and allowance for uncollectible accounts — Accounts receivable arise from natural gas sales to residential, commercial, industrial, public authority and other customers. Our accounts receivable balance includes unbilled amounts which represent a customer’s consumption of gas from the date of the last cycle billing through the last day of the month. The receivable balances are short term and generally do not extend beyond one month. 44 ATMOS ENERGY CORPORATION NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued) Credit losses on our accounts receivable are measured using an expected credit loss model over the entire contractual term from the date of initial recognition. To minimize credit risk, we assess the credit worthiness of new customers, require deposits where necessary, assess late fees, pursue collection activities and disconnect service for nonpayment. After disconnection, accounts are written off when deemed uncollectible. At each reporting period, we assess the allowance for uncollectible accounts based on historical experience, current conditions and consideration of expected future conditions. 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. 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. Securitized intangible asset — Our securitized intangible asset is recorded on AEK and represents the Securitized Utility Tariff Property acquired from Atmos Energy in fiscal 2023. See Note 10 to the consolidated financial statements. The securitized intangible asset is stated at cost, net of accumulated amortization, and is amortized over the life of the asset in proportion to the pattern of economic benefit based on expected future undiscounted cash flows. At the end of its life, this securitized intangible asset will have no residual value. 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, the service cost portion of pension expense and other benefits), administrative and general costs and an allowance for funds used during construction (AFUDC). 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. 2023 2022 2021 Component of AFUDC Statement of Comprehensive Income Location (In thousands) Debt Equity Interest charges Other non-operating income (expense) $ $ 15,808 $ 12,153 $ 64,019 45,505 79,827 $ 57,658 $ 11,414 32,749 44,163 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 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 for the fiscal years ended September 30, 2023, 2022 and 2021. 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. 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. No impairment losses were recorded for our long-lived assets during the fiscal years ended September 30, 2023, 2022 and 2021. 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 2023, we completed our annual goodwill impairment assessment. We test goodwill for impairment at the reporting unit level on an annual basis and between annual tests 45 ATMOS ENERGY CORPORATION NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued) 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 2023 analysis, if a qualitative goodwill 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 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 activities, 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 certain service centers. We record a lease liability and a corresponding right of use (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 lease liability represents the present value of all lease payments over the lease term. We do not include short-term leases in the calculation of our lease liabilities. 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 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. We bundle our lease and non-lease components as a single component for all asset classes. 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. Marketable securities — As of September 30, 2023, we hold marketable securities classified as either equity or debt securities. 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). 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 security will likely be sold before the recovery of its cost, the related investment is written down to its estimated fair value. 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 16 to the consolidated financial statements. We record all of our financial instruments on the balance sheet at fair value, with the exception of normal purchases and normal sales that are expected to result in physical delivery, 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. 46 ATMOS ENERGY CORPORATION NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued) 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, 2023 and 2022, 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. 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 47 ATMOS ENERGY CORPORATION NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued) 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. 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. 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. 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 or liability 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 48 ATMOS ENERGY CORPORATION NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued) 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. 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. To the extent a loss contingency exceeds the self-insurance retention, we record an insurance receivable when recovery is considered probable. Upon reaching a settlement, the loss contingency is deemed resolved and recorded in accounts payable and accrued liabilities until paid. Loss contingencies and any related insurance recovery receivables reflect our best estimate of these amounts as of the date of this report. Actual results may differ from estimates, depending on actual outcomes or changes in the facts or expectations surrounding each potential exposure. 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. 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. Subsequent events — Except as noted in Note 7 and Note 8 to the consolidated financial statements regarding the execution of a new lease and the public offering of senior notes, no events occurred subsequent to the balance sheet date that would require recognition or disclosure in the consolidated financial statements. 3. 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, which creates regulatory assets and liabilities that are recovered from or refunded to customers over time through the ratemaking process. Substantially all of our regulatory assets are recorded as a component of other current assets and 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 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, 2023 and 2022 included the following: 49 ATMOS ENERGY CORPORATION NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued) Regulatory assets: Pension and postretirement benefit costs Infrastructure mechanisms (1) Winter Storm Uri incremental costs Deferred gas costs Regulatory excess deferred taxes (2) Recoverable loss on reacquired debt Deferred pipeline record collection costs Other Regulatory liabilities: Regulatory excess deferred taxes (2) Regulatory cost of removal obligation Deferred gas costs APT annual adjustment mechanism Pension and postretirement benefit costs Other September 30 2023 2022 (In thousands) $ 20,629 $ 229,996 32,115 148,297 47,549 3,238 54,008 19,096 31,122 235,972 2,109,454 119,742 47,311 3,406 36,898 21,467 $ $ 554,928 $ 2,605,372 384,513 $ 582,867 23,093 49,894 215,913 28,054 545,021 568,307 28,834 31,138 156,857 23,013 $ 1,284,334 $ 1,353,170 (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) Regulatory excess deferred taxes represent changes in our net deferred tax liability related to our cost of service ratemaking due to the enactment of the Tax Cuts and Jobs Act of 2017 (the "TCJA") and a Kansas legislative change enacted in fiscal 2020. See Notes 13 and 15 to the consolidated financial statements for further information. Winter Storm Uri A historic winter storm impacted supply, market pricing and demand for natural gas in our service territories in mid- February 2021. Due to the unprecedented level of purchased gas costs incurred during Winter Storm Uri, the Kansas Corporation Commission (KCC) and the Railroad Commission of Texas (RRC) issued orders in 2021 authorizing natural gas utilities to record regulatory assets to account for the extraordinary costs associated with the winter storm. Kansas In Kansas, we recorded a $92.3 million regulatory asset in fiscal 2021 for costs incurred during Winter Storm Uri. As further discussed in Note 10 to the consolidated financial statements, we relieved this regulatory asset through a securitization transaction that was completed in June 2023. Texas In Texas, we recorded a $2.02 billion regulatory asset in fiscal 2021 for costs incurred during Winter Storm Uri. In 2021, the Texas Legislature passed House Bill 1520, which authorized the RRC to issue a statewide securitization financing order directing the Texas Public Finance Authority (TPFA) to issue bonds (customer rate relief bonds) for gas utilities that chose to participate to recover extraordinary costs incurred to secure gas supply and to provide service during Winter Storm Uri, and to restore gas utility systems after that event, thereby providing rate relief to customers by extending the period during which these extraordinary costs would otherwise be recovered and supporting the financial strength and stability of gas utility companies. In March 2023, the Texas Natural Gas Securitization Finance Corporation (the Finance Corporation), with the authority of the TPFA, issued $3.5 billion in customer rate relief bonds with varying scheduled final maturities from 12 to 18 years. The bonds are obligations of the Finance Corporation, payable from the customer rate relief charges and other bond collateral, and are not an obligation of Atmos Energy. We collected $2.02 billion of this amount and relieved the regulatory asset. U.S. GAAP does not provide comprehensive recognition and measurement guidance for many forms of government assistance received by 50 ATMOS ENERGY CORPORATION NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued) business entities. Accordingly, we accounted for the proceeds received from the Finance Corporation by analogy to International Accounting Standards No. 20, "Accounting for Government Grants and Disclosure of Government Assistance" consistent with a grant related to income. The proceeds received and the corresponding derecognition of the regulatory asset have been reflected in purchased gas cost and interest charges in our consolidated statements of comprehensive income. As the proceeds reflect the recovery of the regulatory asset, there was no impact to earnings. The proceeds are reflected in our consolidated statements of cash flow as an increase in operating cash flow. We began collecting the customer rate relief charges on October 1, 2023, and any such property collected is solely owned by the Finance Corporation and not available to pay creditors of Atmos Energy. Additionally, we deferred $32.4 million in carrying costs incurred after September 1, 2022. Effective October 1, 2023, we began recovering $21.2 million over a 12-month period. This amount is recorded as a current asset in other current assets as of September 30, 2023. We anticipate recovering the remaining $10.9 million in future regulatory filings and have recorded this amount as a long-term asset in deferred charges and other assets as of September 30, 2023. 4. Segment Information As of September 30, 2023, 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. 51 ATMOS ENERGY CORPORATION NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued) Income statements and capital expenditures by segment are shown in the following tables. Operating revenues from external parties Intersegment revenues Total operating revenues Purchased gas cost Operation and maintenance expense Depreciation and amortization expense Taxes, other than income Operating income Other non-operating income Interest charges Income before income taxes Income tax expense Net income Capital expenditures Operating revenues from external parties Intersegment revenues Total operating revenues Purchased gas cost Operation and maintenance expense Depreciation and amortization expense Taxes, other than income Operating income Other non-operating income Interest charges Income before income taxes Income tax expense Net income Capital expenditures Year Ended September 30, 2023 Distribution Pipeline and Storage Eliminations Consolidated (In thousands) $ 4,096,661 $ 178,696 $ — $ 4,275,357 3,029 4,099,690 2,061,920 606,478 785,174 (609,507) — (609,507) 4,275,357 (1,220) (608,527) 1,452,173 565,179 434,721 345,244 692,626 24,988 77,185 640,429 60,032 200,707 169,606 41,560 374,521 44,787 60,096 359,212 53,747 (980) 764,906 — — — — — — — 604,327 386,804 1,067,147 69,775 137,281 999,641 113,779 $ 580,397 $ 305,465 $ — $ 885,862 $ 1,927,125 $ 878,848 $ — $ 2,805,973 Year Ended September 30, 2022 Distribution Pipeline and Storage Eliminations Consolidated (In thousands) $ 4,031,936 $ 169,726 $ — $ 4,201,662 3,258 4,035,194 2,210,302 523,934 693,660 (527,192) — (527,192) 4,201,662 (1,583) (526,063) 1,682,656 518,443 387,858 314,046 604,545 6,946 49,921 561,570 39,593 192,847 147,797 38,162 316,437 26,791 52,890 290,338 37,917 (1,129) 710,161 — — — — — — — 535,655 352,208 920,982 33,737 102,811 851,908 77,510 $ 521,977 $ 252,421 $ — $ 774,398 $ 1,675,798 $ 768,622 $ — $ 2,444,420 52 ATMOS ENERGY CORPORATION NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued) Operating revenues from external parties Intersegment revenues Total operating revenues Purchased gas cost Operation and maintenance expense Depreciation and amortization expense Taxes, other than income Operating income Other non-operating income (expense) Interest charges Income before income taxes Income tax expense Net income Capital expenditures Year Ended September 30, 2021 Distribution Pipeline and Storage Eliminations Consolidated (In thousands) $ 3,238,753 $ 168,737 $ — $ 3,407,490 3,220 3,241,973 1,501,695 468,610 637,347 (471,830) — (471,830) 3,407,490 1,582 (470,560) 1,032,717 501,209 345,481 275,074 618,514 179,080 132,496 37,705 286,484 (20,694) 18,549 36,629 561,191 115,329 46,925 258,108 38,407 (1,270) 679,019 — — — — — — — 477,977 312,779 904,998 (2,145) 83,554 819,299 153,736 $ 445,862 $ 219,701 $ — $ 665,563 $ 1,454,195 $ 515,345 $ — $ 1,969,540 The following table summarizes our revenues from external parties, excluding intersegment revenues, by products and services for the fiscal years ended September 30. Distribution revenues: Gas sales revenues: Residential Commercial Industrial Public authority and other Total gas sales revenues Transportation revenues Other gas revenues Total distribution revenues Pipeline and storage revenues Total operating revenues 2023 2022 2021 (In thousands) $ $ 2,638,689 $ 1,112,236 151,970 62,476 3,965,371 119,371 11,919 4,096,661 178,696 4,275,357 $ 2,492,116 $ 1,126,189 224,632 66,956 3,909,893 110,905 11,138 4,031,936 169,726 4,201,662 $ 2,117,272 838,382 113,171 50,369 3,119,194 105,554 14,005 3,238,753 168,737 3,407,490 Balance sheet information at September 30, 2023 and 2022 by segment is presented in the following tables. Property, plant and equipment, net Total assets September 30, 2023 Distribution Pipeline and Storage Eliminations Consolidated (In thousands) $ 14,402,578 $ $ 21,716,467 $ 5,204,005 $ 5,504,972 $ — $ 19,606,583 (4,704,471) $ 22,516,968 53 ATMOS ENERGY CORPORATION NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued) September 30, 2022 Distribution Pipeline and Storage Eliminations Consolidated (In thousands) $ 12,723,532 $ 4,516,707 $ — $ 17,240,239 $ 21,424,586 $ 4,797,206 $ (4,028,803) $ 22,192,989 Property, plant and equipment, net Total assets 5. 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 9 to the consolidated financial statements, when the impact is dilutive. Basic and diluted earnings per share for the fiscal years ended September 30 are calculated as follows: Basic Earnings Per Share Net income Less: Income allocated to participating securities Net income available to common shareholders Basic weighted average shares outstanding Net income per share — Basic Diluted Earnings Per Share Net income available to common shareholders Effect of dilutive shares Net income available to common shareholders Basic weighted average shares outstanding Dilutive shares Diluted weighted average shares outstanding Net income per share — Diluted 2023 2022 2021 (In thousands, except per share data) $ 885,862 $ 774,398 $ 665,563 542 508 465 $ 885,320 $ 773,890 $ 665,098 145,121 137,830 129,779 $ 6.10 $ 5.61 $ 5.12 $ 885,320 $ 773,890 $ 665,098 — — — $ 885,320 $ 773,890 $ 665,098 145,121 137,830 129,779 45 266 55 145,166 138,096 129,834 $ 6.10 $ 5.60 $ 5.12 54 ATMOS ENERGY CORPORATION NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued) 6. Revenue and Accounts Receivable The following tables 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 periods presented. Year Ended September 30, 2023 Distribution Pipeline and Storage (In thousands) 2,606,658 $ 1,100,773 151,538 61,345 3,920,314 121,420 10,044 4,051,778 43,139 4,773 4,099,690 $ — — — — — 811,968 12,180 824,148 (38,974) — 785,174 Year Ended September 30, 2022 Distribution Pipeline and Storage 2,472,461 $ 1,120,322 224,427 66,691 3,883,901 113,043 10,282 4,007,226 26,041 1,927 4,035,194 $ — — — — — 707,205 13,679 720,884 (27,224) — 693,660 $ $ $ $ Gas sales revenues: Residential Commercial Industrial Public authority and other Total gas sales revenues Transportation revenues Miscellaneous revenues Revenues from contracts with customers Alternative revenue program revenues Other revenues Total operating revenues Gas sales revenues: Residential Commercial Industrial Public authority and other Total gas sales revenues Transportation revenues Miscellaneous revenues Revenues from contracts with customers Alternative revenue program revenues Other revenues Total operating revenues 55 ATMOS ENERGY CORPORATION NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued) Gas sales revenues: Residential Commercial Industrial Public authority and other Total gas sales revenues Transportation revenues Miscellaneous revenues Revenues from contracts with customers Alternative revenue program revenues Other revenues Total operating revenues Year Ended September 30, 2021 Distribution Pipeline and Storage $ $ 2,129,704 $ 841,145 113,091 50,565 3,134,505 107,822 10,971 3,253,298 (13,303) 1,978 3,241,973 $ — — — — — 646,416 14,141 660,557 (23,210) — 637,347 We have alternative revenue programs in each of our segments. In our distribution segment, we have weather- normalization adjustment mechanisms that serve to mitigate the effects of weather on our revenue. In our pipeline and storage segment, 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 established by the RRC. Other revenues includes AEK revenues (see Note 10 to the consolidated financial statements) and other miscellaneous revenues. Accounts receivable and allowance for uncollectible accounts Rollforwards of our allowance for uncollectible accounts for the years ended September 30, 2023, 2022 and 2021 are presented in the table below. In response to the COVID-19 pandemic, beginning in March 2020, regulators issued collection moratoriums, which required us to temporarily suspend our customer collection activities and charging late fees. After regulators lifted these moratoriums, we resumed customer collection activities during the third quarter of fiscal 2021. These regulatory orders influenced our bad debt expense and write-offs from fiscal 2021 through 2023. We actively work with our customers experiencing financial hardship to offer flexible payment options and to direct them to aid agencies for financial assistance. Our allowance for uncollectible accounts reflects the expected impact on our customers’ ability to pay. Our allowance for uncollectible accounts also reflects the fact that we have the ability to recover the gas cost portion of uncollectible accounts through our gas cost recovery mechanisms in five states, which covers approximately 80 percent of our residential and commercial customers. 56 ATMOS ENERGY CORPORATION NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued) Balance, September 30, 2020 Current period provisions Write-offs charged against allowance Recoveries of amounts previously written off Balance, September 30, 2021 Current period provisions Write-offs charged against allowance Recoveries of amounts previously written off Balance, September 30, 2022 Current period provisions Write-offs charged against allowance Recoveries of amounts previously written off Balance, September 30, 2023 7. Leases Allowance for uncollectible accounts (In thousands) $ $ 29,949 43,807 (11,019) 1,734 64,471 16,576 (32,885) 1,831 49,993 22,353 (33,595) 2,089 40,840 We utilize operating leases for office and warehouse space, tower space, vehicles and heavy equipment used in our operations. We also have finance leases for certain build-to-suit service centers. The following table presents our weighted average remaining lease term for our leases. Weighted average remaining lease term (years) Finance leases Operating leases The following table represents our weighted average discount rate: Weighted average discount rate Finance leases Operating leases September 30, 2023 September 30, 2022 17.7 10.1 18.7 9.7 September 30, 2023 September 30, 2022 4.0 % 3.5 % 4.0 % 2.9 % Lease costs for the years ended September 30, 2023, 2022 and 2021 are presented in the table below. These costs include both amounts recognized in expense and amounts capitalized. For the years ended September 30, 2023, 2022 and 2021 we did not have material short-term lease costs or variable lease costs. Finance lease cost Operating lease cost Total lease cost 2023 Year Ended September 30 2022 (In thousands) 2021 $ $ 4,499 $ 44,090 48,589 $ 4,314 $ 43,394 47,708 $ 1,334 42,349 43,683 57 ATMOS ENERGY CORPORATION NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued) Our ROU assets and lease liabilities are presented as follows on the consolidated balance sheets: Balance Sheet Classification September 30, 2023 September 30, 2022 Assets Finance leases Operating leases Total right-of-use assets Liabilities Current Finance leases Operating leases Noncurrent Finance leases Operating leases Total lease liabilities Net Property, Plant and Equipment Deferred charges and other assets Current maturities of long-term debt Other current liabilities Long-term debt Deferred credits and other liabilities $ $ $ (In thousands) 47,472 $ 223,366 270,838 $ 1,568 $ 35,820 48,825 194,452 $ 280,665 $ 50,118 214,663 264,781 1,457 38,644 50,393 184,301 274,795 One service center lease commenced in the first quarter of fiscal 2024 that impacts our future lease payments. The total future lease payments for this lease is $28.9 million, and is not included in the tables below. Other pertinent information related to leases was as follows. During the years ended September 30, 2023, 2022 and 2021 amounts paid in cash for our finance leases were not material. Cash paid amounts included in the measurement of lease liabilities Operating cash flows used for operating leases Right-of-use assets obtained in exchange for lease obligations Finance leases Operating leases Year Ended September 30 2023 2022 2021 (In thousands) $ $ $ 45,463 $ 45,080 $ 42,013 — $ 29,976 $ 33,833 $ 28,310 $ 10,333 25,690 Maturities of our lease liabilities as of September 30, 2023 were as follows by fiscal years: Total Finance Leases Operating Leases (In thousands) 2024 2025 2026 2027 2028 Thereafter Total lease payments Less: Imputed interest Total Reported as of September 30, 2023 Short-term lease liabilities Long-term lease liabilities Total lease liabilities $ 44,700 $ 35,635 30,340 27,835 24,089 185,270 347,869 67,204 280,665 $ 37,388 $ 243,277 280,665 $ $ $ $ 58 3,375 $ 3,438 3,502 3,568 3,635 52,362 69,880 19,487 50,393 $ 1,568 $ 48,825 50,393 $ 41,325 32,197 26,838 24,267 20,454 132,908 277,989 47,717 230,272 35,820 194,452 230,272 ATMOS ENERGY CORPORATION NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued) 8. Debt Long-term debt Long-term debt at September 30, 2023 and 2022 consisted of the following: Unsecured 0.625% Senior Notes, due March 2023 Unsecured 3.00% Senior Notes, due June 2027 Unsecured 2.625% Senior Notes, due September 2029 Unsecured 1.50% Senior Notes, due January 2031 Unsecured 5.45% Senior Notes, due October 2032 Unsecured 5.95% Senior Notes, due October 2034 Unsecured 5.50% Senior Notes, due June 2041 Unsecured 4.15% Senior Notes, due January 2043 Unsecured 4.125% Senior Notes, due October 2044 Unsecured 4.30% Senior Notes, due October 2048 Unsecured 4.125% Senior Notes, due March 2049 Unsecured 3.375% Senior Notes, due September 2049 Unsecured 2.85% Senior Notes, due February 2052 Unsecured 5.75% Senior Notes, due October 2052 Floating-rate Senior Notes, due March 2023 Medium term Series A notes, 1995-1, 6.67%, due December 2025 Unsecured 6.75% Debentures, due July 2028 Finance lease obligations (see Note 7) Total long-term debt Less: Net original issue discount on unsecured senior notes and debentures Debt issuance cost Current maturities 2023 2022 (In thousands) $ — $ 1,100,000 500,000 500,000 600,000 300,000 200,000 400,000 500,000 750,000 600,000 450,000 500,000 600,000 500,000 500,000 500,000 600,000 — 200,000 400,000 500,000 750,000 600,000 450,000 500,000 600,000 — — 1,100,000 10,000 150,000 50,393 10,000 150,000 51,850 6,610,393 8,011,850 6,104 48,588 1,568 3,704 46,042 2,201,457 $ 6,554,133 $ 5,760,647 Maturities of long-term debt, excluding our finance lease obligations, at September 30, 2023 were as follows by fiscal years (in thousands): 2024 2025 2026 2027 2028 Thereafter $ $ — — 10,000 500,000 150,000 5,900,000 6,560,000 On October 10, 2023, we completed a public offering of $500 million of 6.20% senior notes due October 2053, with an effective interest rate of 5.56%, after giving effect to the estimated offering costs and settlement of our interest rate swaps, and $400 million of 5.90% senior notes due October 2033, with an effective interest rate of 4.35%, after giving effect to the estimated offering costs and settlement of our interest rate swaps. The net proceeds from the offering, after the underwriting discount and estimated offering expenses, of $889.2 million were used for general corporate purposes. In September 2023, we settled the designated interest rate swaps associated with this offering and received $171.1 million. On October 3, 2022, we completed a public offering of $500 million of 5.75% senior notes due October 2052, with an effective interest rate of 4.50%, after giving effect to the offering costs and settlement of our interest rate swaps, and 59 ATMOS ENERGY CORPORATION NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued) $300 million of 5.45% senior notes due October 2032, with an effective interest rate of 5.57%, after giving effect to the offering costs. The net proceeds from the offering, after the underwriting discount and offering expenses, of $789.4 million were used for general corporate purposes. In September 2022, we settled the interest rate swaps associated with the $500 million offering and received $197.1 million. On January 14, 2022, we completed a public offering of $200 million of 2.625% senior notes due September 2029, with an effective interest rate of 2.54%, after giving effect to the offering costs. The net proceeds from the offering, after the underwriting discount and offering expenses, of $200.8 million were used to repay our $200 million floating-rate term loan on January 18, 2022. On October 1, 2021, we completed a public offering of $600 million of 2.85% senior notes due February 2052, with an effective interest rate of 2.58%, after giving effect to the offering costs and settlement of our interest rate swaps. The net proceeds from the offering, after the underwriting discount and offering expenses, of $589.8 million, were used for general corporate purposes. In September 2021, we settled the interest rate swaps associated with this offering and received $62.2 million. Winter Storm Uri Financing A historic winter storm impacted supply, market pricing and demand for natural gas in our service territories in mid- February 2021. We experienced unforeseeable and unprecedented market pricing for gas costs, which resulted in aggregated natural gas purchases in February 2021 of approximately $2.3 billion. These gas costs were paid using funds received from a public offering of debt securities completed in March 2021 of $2.2 billion. On March 3, 2023, we entered into a term loan agreement for a $2.02 billion senior unsecured term loan facility and used the proceeds, along with cash on hand, to repay at maturity the outstanding $2.2 billion senior notes that matured on March 9, 2023. On March 23, 2023, we received proceeds from the Finance Corporation in the amount of $2.02 billion and repaid the term loan. 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. Our short-term borrowing requirements are driven primarily by construction work in progress and the seasonal nature of the natural gas business. Our short-term borrowing requirements are satisfied through a combination of a $1.5 billion commercial paper program and four committed revolving credit facilities with third-party lenders that provide $2.5 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 March 31, 2027. This facility bears interest at a base rate or at a SOFR-based rate for the applicable interest period, plus a margin ranging from zero percent to 0.25 percent for base rate advances or a margin ranging from 0.75 percent to 1.25 percent for SOFR-based advances, 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, 2023, there was $241.9 million outstanding under our commercial paper program with a weighted average interest rate of 5.46% and weighted average maturities of less than one month. At September 30, 2022, there was $185.0 million outstanding under our commercial paper program. We also have a $900 million three-year unsecured revolving credit facility, which expires March 31, 2025 and is used to provide additional working capital funding. This facility bears interest at a base rate or at a SOFR-based rate for the applicable interest period, plus a margin ranging from zero percent to 0.25 percent for base rate advances or a margin ranging from 0.75 percent to 1.25 percent for SOFR-based advances, based on the Company's credit ratings. Additionally, the facility contains a $100 million accordion feature, which provides the opportunity to increase the total committed loan to $1.0 billion. At September 30, 2023 and 2022, there were no borrowings outstanding under this facility. Additionally, we have a $50 million 364-day unsecured facility, which was renewed April 1, 2023 and is used to provide working capital funding. There were no borrowings outstanding under this facility as of September 30, 2023 and 2022. Finally, we have a $50 million 364-day unsecured revolving credit facility, which was renewed March 31, 2023 and is used to issue letters of credit and to provide working capital funding. At September 30, 2023, there were no borrowings outstanding under the new facility; however, outstanding letters of credit reduced the total amount available to us to $44.4 million. 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 60 ATMOS ENERGY CORPORATION NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued) 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, 2023, our total-debt-to-total-capitalization ratio, as defined, was 40 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, 2023. 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. 9. Shareholders' Equity Shelf Registration, At-the-Market Equity Sales Program and Equity Issuances On March 31, 2023, we filed a shelf registration statement with the Securities and Exchange Commission (SEC) that allows us to issue up to $5.0 billion in common stock and/or debt securities, which expires March 31, 2026. This shelf registration statement replaced our previous shelf registration statement which was filed on June 29, 2021. As of the date of this report, $3.1 billion of securities remained available for issuance under the shelf registration statement. On March 31, 2023, we filed a prospectus supplement under the shelf registration statement relating to an at-the-market (ATM) equity sales program under which we may issue and sell shares of our common stock up to an aggregate offering price of $1.0 billion through March 31, 2026 (including shares of common stock that may be sold pursuant to forward sale agreements entered into concurrently with the ATM equity sales program). During the year ended September 30, 2023, we executed forward sales under our ATM equity sales programs with various forward sellers who borrowed and sold 4,207,126 shares of our common stock at an aggregate price of $496.5 million. During the year ended September 30, 2023, we also settled forward sale agreements with respect to 7,272,261 shares that had been borrowed and sold by various forward sellers under the ATM program for net proceeds of $806.9 million. As of September 30, 2023, $760.5 million of equity was available for issuance under our existing ATM program. Additionally, we had $466.8 million in available proceeds from outstanding forward sale agreements, as detailed below. Maturity Shares Available Net Proceeds Available (In Thousands) Forward Price March 28, 2024 June 28, 2024 September 30, 2024 December 31, 2024 Total 944,296 $ 927,939 1,133,978 954,812 3,961,025 $ 112,238 $ 109,495 132,762 112,308 466,803 $ 118.86 118.00 117.08 117.62 117.85 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). 61 ATMOS ENERGY CORPORATION NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued) September 30, 2022 Other comprehensive income before reclassifications Amounts reclassified from accumulated other comprehensive income Net current-period other comprehensive income September 30, 2023 September 30, 2021 Other comprehensive income (loss) before reclassifications Amounts reclassified from accumulated other comprehensive income Net current-period other comprehensive income (loss) September 30, 2022 Available- for-Sale Securities Interest Rate Agreement Cash Flow Hedges (In thousands) Total $ (495) $ 369,607 $ 369,112 126 — 126 151,410 151,536 (2,120) (2,120) 149,290 149,416 $ (369) $ 518,897 $ 518,528 Available- for-Sale Securities Interest Rate Agreement Cash Flow Hedges (In thousands) Total $ 47 $ 69,756 $ 69,803 (542) 296,875 296,333 — 2,976 2,976 (542) 299,851 299,309 $ (495) $ 369,607 $ 369,112 10. Variable Interest Entity In 2021, the Kansas State Legislature enacted securitization legislation, which permitted a natural gas public utility, in its sole discretion, to apply to the KCC for a financing order for the recovery of qualified extraordinary costs through the issuance of bonds. In September 2021, we filed with the KCC an application to securitize extraordinary gas costs incurred during Winter Storm Uri, which was approved in October 2022. Atmos Energy Kansas Securitization I, LLC (AEK), a special-purpose entity wholly owned by Atmos Energy, was formed for the purpose of issuing securitized bonds to recover extraordinary costs incurred during Winter Storm Uri. In June 2023, AEK completed a public offering of $95 million of 5.155% Series 2023-A Senior Secured Securitized Utility Tariff Bonds with a term of 10 years and semi-annual payments of principal and interest. The net proceeds from the offering, after the underwriting discount and offering expenses, of $93.7 million were primarily used to purchase the Securitized Utility Tariff Property from Atmos Energy for $92.3 million. The bonds are governed by an indenture between AEK and the indenture trustee. The indenture contains certain covenants that restrict AEK's ability to sell, transfer, convey, exchange or otherwise dispose of its assets. AEK's assets cannot be used to settle Atmos Energy's obligations, and the holders of the Securitized Utility Tariff Bonds have no recourse against Atmos Energy. Because AEK's equity at risk is less than 1% of its total assets, it is considered to be a variable interest entity. Atmos Energy has the power to direct the most significant financial and operating activities of AEK, including billing, collections and remittance of customer cash receipts to enable AEK to service the principal and interest payments due under the Securitized Utility Tariff Bonds. Atmos Energy also has the obligation to absorb losses and rights to receive returns from AEK. Therefore, Atmos Energy is the primary beneficiary of AEK, and as a result, AEK is included in the consolidated financial statements of Atmos Energy. No gain or loss was recognized upon initial consolidation. The Securitized Utility Tariff Property that was acquired by AEK is classified as a securitized intangible asset on our consolidated balance sheets. This securitized intangible asset will be amortized over 10 years, the estimated period needed to collect the required amounts from Atmos Energy's customers to service the Securitized Utility Tariff Bonds, with a remaining weighted average amortization period of 5.19 years as of September 30, 2023. The amortization expense related to the securitized intangible asset is included in depreciation and amortization expense in our consolidated statements of comprehensive income. The following table summarizes the impact of AEK on our consolidated balance sheet, for the period indicated: 62 ATMOS ENERGY CORPORATION NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued) Restricted cash and cash equivalents Other current assets Securitized intangible asset, net Accrued interest Current maturities of securitized long-term debt Securitized long-term debt September 30, 2023 (In thousands) $ $ $ $ $ $ 3,844 11 92,202 1,374 9,922 85,078 The following table summarizes the impact of AEK on our consolidated statement of comprehensive income, for the period indicated: Operating revenues Amortization expense Interest expense, net Income before income taxes Year Ended September 30, 2023 (In thousands) $ $ 2,743 (1,398) (1,345) — The following table summarizes the maturities of the securitized long-term debt and the amortization expense related to the securitized intangible asset expected to be recognized in our consolidated statements of comprehensive income: For the fiscal year ending: 2024 2025 2026 2027 2028 Thereafter Total Maturities of Securitized Long- Term Debt Amortization Expense of Securitized Intangible Asset $ $ (In thousands) 9,922 $ 8,207 8,635 9,086 9,561 49,589 95,000 $ 8,159 8,207 8,635 9,086 9,561 48,554 92,202 The securitized long-term debt is recorded at carrying value. The fair value of the securitized long-term debt is determined using third party market value quotations, which are considered Level 2 fair value measurements for debt instruments where fair value is determined using the most recent available quoted market price. The carrying value and fair value of the securitized long-term debt as of September 30, 2023 is $95.0 million and $92.3 million. 11. Retirement and Postretirement Employee Benefit Plans We have both funded and unfunded noncontributory defined benefit plans that together cover most of our employees. We also maintain a postretirement plan that provides 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 are 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: 63 ATMOS ENERGY CORPORATION NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued) Employee Pension Plan Supplemental Executive Retirement Plans Postretirement Plan Total (In thousands) $ $ $ $ — $ — $ (37,937) $ (37,937) (72,129) 12,314 (118,161) (177,976) (72,129) $ 12,314 $ (156,098) $ (215,913) (121) $ — $ (51,079) $ (51,200) (32,159) 14,029 (87,527) (105,657) (32,280) $ 14,029 $ (138,606) $ (156,857) September 30, 2023 Unrecognized prior service credit Unrecognized actuarial (gain) loss September 30, 2022 Unrecognized prior service credit Unrecognized actuarial (gain) loss Defined Benefit Plans Employee Pension Plan As of September 30, 2023, we maintained one cash balance defined benefit plan, the Atmos Energy Corporation Pension Account Plan (the Pension Plan). The Pension 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 Pension Plan was closed to new participants. The assets of the Pension 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 Pension 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 (ERISA), 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. During fiscal 2023 and 2022, we contributed $8.0 million and $8.5 million in cash to the Pension Plan to achieve a desired level of funding while maximizing the tax deductibility of this payment. Based upon market conditions at September 30, 2023, the current funded position of the Pension Plan and the funding requirements under the PPA, we do not anticipate a minimum required contribution for fiscal 2024. 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 Qualified Retirement Plans and Trusts Committee, comprised of a group of executives appointed by the Board of Directors to oversee the Company's employee pension plan, defined contribution plan and postretirement benefit plan. 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. 64 ATMOS ENERGY CORPORATION NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued) The following table presents asset allocation information for the Master Trust as of September 30, 2023 and 2022. Security Class Domestic equities International equities Fixed income Company stock Other assets Targeted Allocation Range 35%-55% 10%-20% 5%-45% 0%-15% 0%-20% 2023 42.9% 16.0% 19.8% 15.1% 6.2% Actual Allocation September 30 2022 39.7% 14.6% 16.0% 15.3% 14.4% At September 30, 2023 and 2022, the Pension Plan held 716,700 shares of our common stock which represented 15.1 percent and 15.3 percent of total Pension Plan assets. These shares generated dividend income for the Pension Plan of approximately $2.1 million and $1.9 million during fiscal 2023 and 2022. Our 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 Pension Plan annually based upon a September 30 measurement date. The development of our assumptions is fully described in our significant accounting policies in Note 2 to the consolidated financial statements. The actuarial assumptions used to determine the pension liability for the Pension Plan was determined as of September 30, 2023 and 2022 and the actuarial assumptions used to determine the net periodic pension cost for the Pension Plan was determined as of September 30, 2022, 2021 and 2020. Additional assumptions are presented in the following table: Discount rate Rate of compensation increase Expected return on plan assets Interest crediting rate Pension Liability Pension Cost 2023 2022 2023 2022 2021 6.10 % 3.50 % 6.25 % 4.69 % 5.66 % 3.50 % 6.25 % 4.69 % 5.66 % 3.50 % 6.25 % 4.69 % 2.97 % 3.50 % 6.25 % 4.69 % 2.80 % 3.50 % 6.25 % 4.69 % 65 ATMOS ENERGY CORPORATION NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued) The following table presents the Pension Plan’s accumulated benefit obligation, projected benefit obligation and funded status as of September 30, 2023 and 2022: Accumulated benefit obligation Change in projected benefit obligation: Benefit obligation at beginning of year Service cost Interest cost Actuarial gain Benefits paid Benefit obligation at end of year Change in plan assets: Fair value of plan assets at beginning of year Actual return on plan assets Employer contributions Benefits paid Fair value of plan assets at end of year Reconciliation: Funded status Unrecognized prior service cost Unrecognized net loss Net amount recognized 2023 2022 (In thousands) 412,160 $ 428,629 449,527 $ 596,029 $ $ 10,805 24,924 (16,085) (37,611) 431,560 479,025 52,998 8,000 (37,611) 502,412 16,165 17,606 (141,567) (38,706) 449,527 596,806 (87,575) 8,500 (38,706) 479,025 70,852 29,498 — — — — $ 70,852 $ 29,498 Net periodic pension cost for the Pension Plan for fiscal 2023, 2022 and 2021 is presented in the following table. Components of net periodic pension cost: Service cost Interest cost (1) Expected return on assets (1) Amortization of prior service credit (1) Recognized actuarial loss (1) Net periodic pension cost Fiscal Year Ended September 30 2023 2022 2021 (In thousands) $ 10,805 $ 24,924 16,165 $ 17,606 17,369 16,883 (29,113) (29,531) (27,913) (121) — (231) 4,638 $ 6,495 $ 8,647 $ (231) 8,686 14,794 (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 to the consolidated financial statements. 66 ATMOS ENERGY CORPORATION NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued) The following tables set forth by level, within the fair value hierarchy, the Pension Plan's assets at fair value as of September 30, 2023 and 2022. 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 Pension Plan are fully described in Note 2 to the consolidated financial statements. 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 Pension Plan had net accounts receivable of $0.4 million and $2.4 million at September 30, 2023 and 2022, which materially approximates fair value due to the short-term nature of these assets. Investments: Common stocks Money market funds Registered investment companies Government securities: Mortgage-backed securities U.S. treasuries Corporate bonds Total investments measured at fair value Investments measured at net asset value: Common/collective trusts (1) Limited partnerships (1) Total investments Investments: Common stocks Money market funds Registered investment companies Government securities: Mortgage-backed securities U.S. treasuries Corporate bonds Total investments measured at fair value Investments measured at net asset value: Common/collective trusts (1) Limited partnerships (1) Total investments Assets at Fair Value as of September 30, 2023 Level 1 Level 2 Level 3 Total (In thousands) $ 243,600 $ — $ — $ 243,600 — 69,439 — 8,461 — 30,965 — 17,685 27 23,357 $ 321,500 $ 72,034 $ — — — — — — 30,965 69,439 17,685 8,488 23,357 393,534 88,122 20,329 $ 501,985 Assets at Fair Value as of September 30, 2022 Level 1 Level 2 Level 3 Total (In thousands) $ 210,325 $ — $ — $ 210,325 — 53,401 — 3,681 — 14,490 — 14,175 28 22,320 $ 267,407 $ 51,013 $ — — — — — — 14,490 53,401 14,175 3,709 22,320 318,420 86,891 71,331 $ 476,642 (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 (the Supplemental Plans) which provide additional pension, disability and death benefits to our officers and certain other employees of the Company. 67 ATMOS ENERGY CORPORATION NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued) The Supplemental Executive Benefits Plan (SEBP) 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 Plan. During fiscal 2023, we recognized a settlement charge of $1.0 million and paid a $5.6 million lump sum in relation to the retirement of certain executives. During fiscal 2021, we recognized a settlement charge of $9.2 million and paid a $25.7 million lump sum in relation to the retirements of certain executives. We review the estimates and assumptions underlying our Supplemental Plans annually based upon a September 30 measurement date using the same techniques as our Pension Plan. The actuarial assumptions used to determine the pension liability for the Supplemental Plans were determined as of September 30, 2023 and 2022 and the actuarial assumptions used to determine the net periodic pension cost for the Supplemental Plans were determined as of September 30, 2022, 2021 and 2020. These assumptions are presented in the following table: Discount rate (1) Rate of compensation increase Interest crediting rate Pension Liability Pension Cost 2023 2022 2023 2022 2021 6.17 % 3.50 % 4.69 % 5.71 % 3.50 % 4.69 % 5.50 % 3.50 % 4.69 % 2.57 % 3.50 % 4.69 % 2.90 % 3.50 % 4.69 % (1) Reflects a weighted average discount rate for pension cost for fiscal 2023 and 2021 due to the settlements during the year. 68 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, 2023 and 2022: Accumulated benefit obligation Change in projected benefit obligation: Benefit obligation at beginning of year Service cost Interest cost Actuarial (gain) loss Benefits paid Settlements Benefit obligation at end of year Change in plan assets: Fair value of plan assets at beginning of year Employer contribution Benefits paid Settlements Fair value of plan assets at end of year Reconciliation: Funded status Unrecognized prior service cost Unrecognized net loss Accrued pension cost 2023 2022 (In thousands) 75,687 $ 79,233 80,775 $ 104,301 $ $ 845 4,227 6 (4,368) (5,587) 75,898 — — — — — 1,129 2,647 (22,471) (4,831) — 80,775 — — — — — (75,898) (80,775) — — — — $ (75,898) $ (80,775) Assets for the Supplemental Plans are held in separate rabbi trusts. At September 30, 2023 and 2022, assets held in the rabbi trusts consisted of equity securities of $31.5 million and $30.2 million, which are included in our fair value disclosures in Note 17 to the consolidated financial statements. Net periodic pension cost for the Supplemental Plans for fiscal 2023, 2022 and 2021 is presented in the following table. Components of net periodic pension cost: Service cost Interest cost (1) Recognized actuarial loss (1) Settlements (1) Net periodic pension cost Fiscal Year Ended September 30 2023 2022 2021 (In thousands) $ 845 $ 1,129 $ 4,227 691 1,030 2,647 3,166 — 1,067 3,180 3,560 9,151 $ 6,793 $ 6,942 $ 16,958 (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 to the consolidated financial statements. 69 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: 2024 2025 2026 2027 2028 2029-2033 Pension Plan Supplemental Plans (In thousands) $ 39,151 $ 39,078 40,537 40,543 40,108 192,754 9,660 30,647 6,705 3,902 4,658 31,740 Postretirement Benefits Plan We sponsor the Retiree Medical Plan for Retirees and Disabled Employees of Atmos Energy Corporation (the Retiree Medical Plan). This plan provides medical and prescription drug protection to all qualified participants based on their date of retirement. The 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, 2022, the Retiree Medical Plan was amended to change the post-65 retiree coverage to Via Benefits with an Atmos Energy funded Health Reimbursement Account. Eligible post-65 retirees and post-65 spouses will be able to elect coverage through Via Benefits, including those that previously deferred or declined retiree coverage. 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 $10 million and $15 million to our Retiree Medical Plan during fiscal 2024. We maintain a formal investment policy with respect to the assets in our Retiree Medical Plan to ensure the assets funding the Retiree Medical 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 Retiree Medical Plan. We currently invest the assets funding our Retiree Medical 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 Retiree Medical Plan assets as of September 30, 2023 and 2022. Security Class Diversified investment funds Cash and cash equivalents Actual Allocation September 30 2023 98.2% 1.8% 2022 97.7% 2.3% We review the estimates and assumptions underlying our Retiree Medical Plan annually based upon a September 30 measurement date using the same techniques as our Pension Plan and Supplemental Plans. The actuarial assumptions used to determine the pension liability for our Retiree Medical Plan were determined as of September 30, 2023 and 2022 and the actuarial assumptions used to determine the net periodic pension cost for the Retiree Medical Plan were determined as of September 30, 2022, 2021 and 2020. 70 ATMOS ENERGY CORPORATION NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued) The assumptions are presented in the following table: Discount rate Expected return on plan assets Initial trend rate Ultimate trend rate Ultimate trend reached in Postretirement Liability Postretirement Cost 2023 2022 2023 2022 2021 6.06 % 4.94 % 6.50 % 5.00 % 2030 5.61 % 4.94 % 6.25 % 4.75 % 2029 5.61 % 4.94 % 6.25 % 4.75 % 2029 3.01 % 4.94 % 6.25 % 5.00 % 2027 2.80 % 4.94 % 6.25 % 5.00 % 2026 The following table presents the Retiree Medical Plan’s benefit obligation and funded status as of September 30, 2023 and 2022: Change in benefit obligation: Benefit obligation at beginning of year Service cost Interest cost Plan participants’ contributions Actuarial (gain) loss Benefits paid Benefit obligation at end of year Change in plan assets: Fair value of plan assets at beginning of year Actual return on plan assets Employer contributions Benefits paid Fair value of plan assets at end of year Reconciliation: Funded status Unrecognized transition obligation Unrecognized prior service cost Unrecognized net loss Accrued postretirement cost 2023 2022 (In thousands) $ 250,228 $ 355,156 6,183 13,911 2,053 (21,468) (16,903) 234,004 229,686 27,833 — (1,719) 10,235 10,734 3,210 (112,748) (16,359) 250,228 268,199 (40,113) 1,600 — 255,800 229,686 21,796 (20,542) — — — — — — $ 21,796 $ (20,542) 71 ATMOS ENERGY CORPORATION NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued) Net periodic postretirement cost for the Retiree Medical Plan for fiscal 2023, 2022 and 2021 is presented in the following table. Components of net periodic postretirement cost: Service cost Interest cost (1) Expected return on assets (1) Amortization of prior service (credit) cost (1) Recognized actuarial (gain) loss (1) Net periodic postretirement cost Fiscal Year Ended September 30 2023 2022 2021 (In thousands) $ 6,183 $ 13,911 10,235 $ 10,734 11,000 15,372 (11,215) (13,249) (10,455) (13,142) (13,234) 30,533 (7,452) — 1,172 $ (11,715) $ (5,514) $ 47,622 (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 to the consolidated financial statements. 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, 2023 and 2022. The methods used to determine fair value for the assets held by the Retiree Medical Plan are fully described in Note 2 to the consolidated financial statements. Investments: Money market funds Registered investment companies Total investments measured at fair value Investments: Money market funds Registered investment companies Total investments measured at fair value Assets at Fair Value as of September 30, 2023 Level 1 Level 2 Level 3 Total (In thousands) $ — $ 4,759 $ — $ 4,759 251,041 — — 251,041 $ 251,041 $ 4,759 $ — $ 255,800 Assets at Fair Value as of September 30, 2022 Level 1 Level 2 Level 3 Total (In thousands) $ — $ 5,214 $ — $ 5,214 224,472 — — 224,472 $ 224,472 $ 5,214 $ — $ 229,686 72 ATMOS ENERGY CORPORATION NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued) Estimated Future Benefit Payments The following benefit payments paid by the Company, retirees and prescription drug subsidies for our Retiree Medical Plan, which reflect expected future service, as appropriate, are expected to be paid in the following fiscal years. 2024 2025 2026 2027 2028 2029-2033 Company Payments Retiree Payments Subsidy Payments Total Postretirement Benefits $ 17,124 $ 17,179 17,228 17,464 17,576 92,555 (In thousands) 2,257 $ 2,233 2,189 2,095 1,967 9,068 — $ — — — — — 19,381 19,412 19,417 19,559 19,543 101,623 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. Newly hired employees automatically become participants of the Retirement Savings Plan on the date of employment at a contribution rate of four percent. They are eligible to receive matching contributions immediately upon enrollment, which vest after completing one year of service. Participants may elect a salary reduction up to a maximum of 65 percent of eligible compensation, as defined by the Retirement Savings Plan, not to exceed the maximum allowed by the Internal Revenue Service. Effective October 1, 2022, participants who contribute less than 10 percent will have their contribution percent increased by one percent annually until a 10 percent salary deferral rate is achieved, unless the participant opts out of this election. We match 100 percent of a participant’s contributions, limited to four percent of the participant’s salary. Additionally, employees hired on or after October 1, 2010 receive a fixed annual contribution of four percent of eligible earnings. And, effective October 1, 2022, the Retirement Savings Plan was amended to add an elective Roth deferral feature. Finally, participants are permitted to take out a loan against their accounts subject to certain restrictions. Matching and fixed annual contributions to the Retirement Savings Plan are expensed as incurred and amounted to $23.9 million, $21.9 million and $20.6 million for fiscal years 2023, 2022 and 2021. At September 30, 2023 and 2022, the Retirement Savings Plan held 1.4 percent and 1.6 percent of our outstanding common stock. 12. Stock and Other Compensation Plans Stock-Based Compensation Plans Total stock-based compensation cost was $23.7 million, $22.2 million and $24.1 million for the fiscal years ended September 30, 2023, 2022 and 2021. Of this amount, $13.5 million, $11.5 million and $12.9 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 and providing for additional performance incentives by providing employees with the opportunity to acquire common stock. We are 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, 2023, 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 0.6 million shares are available for future issuance. Restricted Stock Units Award Grants As noted above, the LTIP provides for discretionary awards of restricted stock units to help attract, retain and reward certain 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 73 ATMOS ENERGY CORPORATION NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued) 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, 2023, 2022 and 2021: 2023 2022 2021 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 381,295 $ 105.69 378,127 $ 102.45 443,279 $ 99.28 Granted Vested Forfeited Nonvested at end of year 241,436 (220,929) (11,845) 109.78 104.05 107.47 179,738 (159,019) (17,551) 108.07 100.99 103.37 223,954 (271,435) 102.68 97.44 (17,671) 101.48 389,957 $ 109.10 381,295 $ 105.69 378,127 $ 102.45 As of September 30, 2023, there was $13.9 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 1.4 years. The fair value of restricted stock vested during the fiscal years ended September 30, 2023, 2022 and 2021 was $22.8 million, $16.0 million and $26.3 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 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 74 ATMOS ENERGY CORPORATION NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued) 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. 13. 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, 2023 and 2022: Billed accounts receivable Unbilled revenue Contributions in aid of construction receivable Insurance receivable Other accounts receivable Total accounts receivable Less: allowance for uncollectible accounts Net accounts receivable Other current assets September 30 2023 2022 (In thousands) $ 198,976 $ 105,743 17,184 33,697 13,894 369,494 (40,840) 258,333 121,518 5,390 13,160 15,300 413,701 (49,993) $ 328,654 $ 363,708 Other current assets as of September 30, 2023 and 2022 were comprised of the following accounts. Deferred gas costs Winter Storm Uri incremental costs Prepaid expenses Taxes receivable Materials and supplies Assets from risk management activities Other Total September 30 2023 2022 (In thousands) $ 148,297 $ 119,742 21,213 58,029 13,918 34,297 4,071 12,211 2,020,954 58,551 11,911 25,880 26,207 11,245 $ 292,036 $ 2,274,490 75 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, 2023 and 2022: Storage plant Transmission plant Distribution plant General plant Intangible plant Construction in progress Less: accumulated depreciation and amortization Net property, plant and equipment (1) September 30 2023 2022 (In thousands) $ 668,237 $ 589,210 4,995,579 4,325,540 15,283,965 13,511,409 972,054 38,612 937,500 38,612 21,958,447 19,402,271 939,927 835,868 22,898,374 20,238,139 (3,291,791) (2,997,900) $ 19,606,583 $ 17,240,239 (1) Net property, plant and equipment includes plant acquisition adjustments of $(24.8) million and $(26.6) million at September 30, 2023 and 2022. Deferred charges and other assets Deferred charges and other assets as of September 30, 2023 and 2022 were comprised of the following accounts. Marketable securities Regulatory assets (See Note 3) Operating lease right of use assets (See Note 7) Winter Storm Uri incremental costs Assets from risk management activities Pension assets Other Total September 30 2023 2022 (In thousands) $ 104,602 $ 364,741 223,366 10,902 381,593 92,648 23,306 96,012 368,375 214,663 88,500 355,784 29,498 20,968 $ 1,201,158 $ 1,173,800 76 ATMOS ENERGY CORPORATION NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued) Accounts payable and accrued liabilities Accounts payable and accrued liabilities as of September 30, 2023 and 2022 were comprised of the following accounts. Trade accounts payable Accrued gas payable Accrued liabilities Total Other current liabilities September 30 2023 2022 (In thousands) $ 218,181 $ 43,688 74,214 258,506 157,942 79,571 $ 336,083 $ 496,019 Other current liabilities as of September 30, 2023 and 2022 were comprised of the following accounts. Customer credit balances and deposits Accrued employee costs Deferred gas costs Operating lease liabilities (See Note 7) Accrued interest Liabilities from risk management activities Taxes payable Pension and postretirement liabilities Regulatory cost of removal obligation APT annual adjustment mechanism Regulatory excess deferred taxes (See Note 15) Other Total Deferred credits and other liabilities September 30 2023 2022 (In thousands) $ 65,266 $ 50,042 23,093 35,820 78,939 14,584 195,468 9,375 85,850 34,550 131,301 38,798 56,016 47,661 28,834 38,644 59,542 3,000 189,239 9,721 80,676 18,034 159,808 28,982 $ 763,086 $ 720,157 Deferred credits and other liabilities as of September 30, 2023 and 2022 were comprised of the following accounts. Pension and postretirement liabilities Operating lease liabilities (See Note 7) Customer advances for construction Other regulatory liabilities (See Note 3) Asset retirement obligation Liabilities from risk management activities APT annual adjustment mechanism Unrecognized tax benefits (See Note 15) Other Total 77 September 30 2023 2022 (In thousands) $ 66,523 $ 194,452 9,158 242,049 5,174 824 15,344 46,620 19,754 91,596 184,301 8,628 178,990 5,737 1,129 13,104 39,908 14,909 $ 599,898 $ 538,302 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, 2023, 2022 and 2021 were comprised of the following accounts. Equity component of AFUDC Performance-based rate program Pension and other postretirement non-service credit (cost) Interest income Community support spending Unrealized gains (losses) on equity securities Miscellaneous Total Statement of Cash Flows Year Ended September 30 2023 2022 2021 (In thousands) $ 64,019 $ 45,505 $ 7,093 8,955 7,207 8,327 8,337 2,781 (12,027) (16,357) 1,406 (6,878) (7,737) (7,119) $ 69,775 $ 33,737 $ 32,749 6,362 (19,238) 2,144 (14,460) (860) (8,842) (2,145) Supplemental disclosures of cash flow information for the fiscal years ended September 30, 2023, 2022 and 2021 were as follows: Cash Paid (Received) During The Period For: Interest (1) Income taxes Non-Cash Transactions: Capital expenditures included in current liabilities Year Ended September 30 2023 2022 2021 (In thousands) $ $ $ 249,066 $ 234,297 $ 207,555 14,968 $ 15,760 $ 8,199 186,912 $ 217,868 $ 184,786 (1) Cash paid during the period for interest, net of amounts capitalized was $117.9 million, $98.4 million and $81.9 million for the fiscal years ended September 30, 2023, 2022 and 2021. 14. 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 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 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 78 ATMOS ENERGY CORPORATION NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued) 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 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 under contracts indexed to natural gas trading hubs or fixed price contracts. At September 30, 2023, we were committed to purchase 65.5 Bcf within one year and 72.3 Bcf within two to three years under indexed contracts. At September 30, 2023, we were committed to purchase 20.6 Bcf within one year under fixed price contracts with a weighted average price of $2.80 per Mcf. Purchases under these contracts totaled $182.0 million, $352.6 million and $149.4 million for 2023, 2022 and 2021. Rate Regulatory Proceedings As of September 30, 2023, 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. 15. Income Taxes Income Tax Expense The components of income tax expense from continuing operations for 2023, 2022 and 2021 were as follows: Current Federal State Deferred Federal State Income tax expense 2023 2022 2021 (In thousands) $ $ (1,274) $ 13,550 2,849 $ 28,125 — 252 83,244 18,259 113,779 $ 43,435 3,101 77,510 $ 128,867 24,617 153,736 Reconciliations of the provision for income taxes computed at the statutory rate of 21 percent to the reported provisions for income taxes from continuing operations for 2023, 2022 and 2021 are set forth below: Tax at statutory rate Common stock dividends deductible for tax reporting State taxes (net of federal benefit) Amortization of excess deferred taxes Other, net Income tax expense 2023 2022 2021 (In thousands) $ 209,925 $ 178,901 $ 172,053 (1,355) (1,355) 25,129 24,669 (1,372) 19,647 (123,953) (127,193) (45,382) 4,033 2,488 8,790 $ 113,779 $ 77,510 $ 153,736 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, 2023 and 2022 are presented below: 79 ATMOS ENERGY CORPORATION NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued) Deferred tax assets: Employee benefit plans Net operating loss carryforwards Charitable and other credit carryforwards Regulatory excess deferred tax Lease asset Other Total deferred tax assets Valuation allowance Net deferred tax assets Deferred tax liabilities: Difference in net book value and net tax value of assets Gas cost adjustments Winter Storm Uri regulatory asset Lease liability Rate deferral adjustment Interest rate agreements Other Total deferred tax liabilities Net deferred tax liabilities 2023 2022 (In thousands) $ 50,576 $ 504,121 10,084 76,943 58,633 42,257 742,614 (351) 742,263 57,094 485,061 1,903 110,548 50,007 44,035 748,648 (523) 748,125 (2,674,341) (2,431,757) (47,822) (28,116) (51,666) (47,218) (43,964) (20,710) (50,007) (49,309) (149,969) (106,820) (48,105) (45,063) (3,047,237) (2,747,630) $ (2,304,974) $ (1,999,505) At September 30, 2023, we had $458.7 million (tax effected) of federal net operating loss carryforwards. The federal net operating loss carryforwards are available to offset future taxable income and have no expiration date. The Company has $8.2 million (tax effected) charitable contribution carryforwards to offset future taxable income as of September 30, 2023. The Company also has $45.4 million (tax effected) of state net operating loss carryforwards (net of $11.9 million of federal effects) and $1.9 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 2026. At September 30, 2023 and 2022, we had recorded liabilities associated with unrecognized tax benefits totaling $58.6 million and $52.7 million, which includes $12.0 million and $12.8 million in deferred tax liabilities. The following table reconciles the beginning and ending balance of our unrecognized tax benefits: Unrecognized tax benefits - beginning balance Increase (decrease) resulting from prior period tax positions Increase resulting from current period tax positions Unrecognized tax benefits - ending balance Less: deferred federal and state income tax benefits Total unrecognized tax benefits that, if recognized, would impact the effective income tax rate as of the end of the year 2023 2022 2021 $ (In thousands) 52,683 $ (631) 6,586 58,638 (12,314) 32,792 $ (721) 20,612 52,683 (11,063) 30,921 671 1,200 32,792 (6,886) $ 46,324 $ 41,620 $ 25,906 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, 2023, 2022 and 2021, the Company recognized approximately $3.4 million, $1.3 million and $1.4 million in interest and penalties. The Company had approximately $15.1 million, $11.7 million and $10.4 million for the payment of interest and penalties accrued at September 30, 2023, 2022 and 2021. 80 ATMOS ENERGY CORPORATION NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued) 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. Regulatory Excess Deferred Taxes Regulatory excess net deferred taxes represent changes in our net deferred tax liability related to our cost of service ratemaking due to the enactment of the Tax Cuts and Jobs Act of 2017 (the TCJA) and a Kansas legislative change enacted in fiscal 2020. As of September 30, 2023 and 2022, $131.3 million and $159.8 million is recorded in other current liabilities. Currently, the regulatory excess net deferred tax liability is being returned over various periods. Of this amount, $279.4 million, is being returned to customers over 35 - 60 months. An additional $53.5 million is being returned to customers on a provisional basis over 15 - 69 years until our regulators establish the final refund periods. The refund of the remaining $4.0 million will be addressed in future rate proceedings. 16. Financial Instruments We currently use financial instruments to mitigate commodity price risk and 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. 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 2022-2023 heating season (generally October through March), in the jurisdictions where we are permitted to utilize financial instruments, we hedged approximately 17.3 Bcf of the winter flowing gas requirements at a weighted average cost of approximately $5.28 per Mcf. We have not designated these financial instruments as hedges for accounting purposes. Interest Rate Risk Management Activities We manage interest rate risk by periodically entering into financial instruments to effectively fix the Treasury yield component of the interest cost associated with anticipated financings. The following table summarizes our existing forward starting interest rate swaps as of September 30, 2023. These swaps were designated as cash flow hedges at the time the agreements were executed. Planned Debt Issuance Date Fiscal 2025 Fiscal 2026 Amount Hedged (In thousands) $ $ 600,000 300,000 900,000 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, 2023, 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, 2023, we had 31,289 MMcf of net long commodity contracts outstanding. These contracts have not been designated as hedges. 81 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, 2023 and 2022. As discussed in Note 2 to the consolidated financial statements, 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 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, 2023 and 2022, no gross amounts and no cash collateral were netted within our consolidated balance sheet. September 30, 2023 Designated As Hedges: Interest rate contracts Total Not Designated As Hedges: Commodity contracts Commodity contracts Total Gross / Net Financial Instruments September 30, 2022 Designated As Hedges: Interest rate contracts Total Not Designated As Hedges: Commodity contracts Commodity contracts Total Gross / Net Financial Instruments Balance Sheet Location Assets Liabilities (In thousands) Deferred charges and other assets / Deferred credits and other liabilities Other current assets / Other current liabilities Deferred charges and other assets / Deferred credits and other liabilities $ 379,101 $ 379,101 — — 4,071 (14,584) 2,492 6,563 $ 385,664 $ (824) (15,408) (15,408) Balance Sheet Location Assets Liabilities (In thousands) Deferred charges and other assets / Deferred credits and other liabilities Other current assets / Other current liabilities Deferred charges and other assets / Deferred credits and other liabilities $ 355,075 $ 355,075 — — 26,207 (3,000) 709 26,916 $ 381,991 $ (1,129) (4,129) (4,129) Impact of Financial Instruments on the Statement of Comprehensive Income Cash Flow Hedges As discussed above, our distribution segment has interest rate agreements, which we designate as cash flow hedges at the time the agreements were executed. The net (gain) 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, 2023, 2022 and 2021 was $(2.7) million, $3.8 million and $5.9 million. 82 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, net of taxes, for the years ended September 30, 2023 and 2022. Increase in fair value: Interest rate agreements Recognition of (gains) losses in earnings due to settlements: Interest rate agreements Total other comprehensive income from hedging, net of tax Fiscal Year Ended September 30 2023 2022 (In thousands) $ 151,410 $ 296,875 (2,120) 2,976 $ 149,290 $ 299,851 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, 2023, we had $224.8 million of net realized gains 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 gains 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 2053. 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. 2024 2025 2026 2027 2028 Thereafter Total Interest Rate Agreements (In thousands) 9,965 9,965 9,965 9,965 9,965 174,973 224,798 $ $ 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. 17. 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 and restricted 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 to the consolidated financial statements. Fair value measurements also apply to the valuation of our pension and postretirement plan assets. The fair value of these assets is presented in Note 11 to the consolidated financial statements. 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, 83 ATMOS ENERGY CORPORATION NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued) our assets and liabilities that were accounted for at fair value on a recurring basis as of September 30, 2023 and 2022. 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. Assets: Financial instruments Debt and equity securities Registered investment companies Bond mutual funds Bonds (2) Money market funds Total debt and equity securities Total assets Liabilities: Financial instruments Assets: Financial instruments Debt and equity securities Registered investment companies Bond mutual funds Bonds (2) Money market funds Total debt and equity securities Total assets Liabilities: Financial instruments Quoted Prices in Active Markets (Level 1) Significant Other Observable Inputs (Level 2) (1) Significant Other Unobservable Inputs (Level 3) (In thousands) Netting and Cash Collateral September 30, 2023 $ — $ 385,664 $ — $ — $ 385,664 26,685 37,573 — — 64,258 — — 35,507 4,837 40,344 — — — — — — — — — — 26,685 37,573 35,507 4,837 104,602 $ 64,258 $ 426,008 $ — $ — $ 490,266 $ — $ 15,408 $ — $ — $ 15,408 Quoted Prices in Active Markets (Level 1) Significant Other Observable Inputs (Level 2) (1) Significant Other Unobservable Inputs (Level 3) (In thousands) Netting and Cash Collateral September 30, 2022 $ — $ 381,991 $ — $ — $ 381,991 26,367 32,367 — — 58,734 — — 33,433 3,845 37,278 — — — — — — — — — — 26,367 32,367 33,433 3,845 96,012 $ 58,734 $ 419,269 $ — $ — $ 478,003 $ — $ 4,129 $ — $ — $ 4,129 (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. Debt and equity securities are comprised of our available-for-sale debt securities and our equity securities. We evaluate the performance of our available-for-sale debt securities on an investment by investment basis for impairment, taking into consideration the investment’s purpose, volatility, current returns and any intent to sell the security. As of September 30, 2023, no allowance for credit losses was recorded for our available-for-sale debt securities. At September 30, 2023 and 2022, the amortized cost of our available-for-sale debt securities was $36.0 million and $34.1 million. At September 30, 2023 we maintained investments in bonds that have contractual maturity dates ranging from October 2023 through September 2026. 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 and restricted cash and cash 84 ATMOS ENERGY CORPORATION NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued) equivalents, accounts receivable, accounts payable, finance leases and debt, which are recorded at carrying value. The nonfinancial assets and liabilities include asset retirement obligations and pension and postretirement plan assets. For cash and cash equivalents and restricted cash and cash equivalents, accounts receivable, accounts payable and finance leases 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 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, 2023: Carrying Amount Fair Value 18. Concentration of Credit Risk September 30, 2023 (In thousands) $ $ 6,560,000 5,402,591 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 pipeline and storage segment is not significant. 85 ITEM 9. Changes in and Disagreements With Accountants on Accounting and Financial Disclosure. None. ITEM 9A. Controls and Procedures. Management’s Evaluation of Disclosure Controls and Procedures We carried out an evaluation, under the supervision and with the participation of our management, including our principal executive officer and principal financial officer, of the effectiveness of the Company’s disclosure controls and procedures, as such term is defined in Rule 13a-15(e) under the Securities Exchange Act of 1934, as amended (Exchange Act). Based on this evaluation, the Company’s principal executive officer and principal financial officer have concluded that the Company’s disclosure controls and procedures were effective as of September 30, 2023 to provide reasonable assurance that information required to be disclosed by us, including our consolidated entities, in the reports that we file or submit under the Exchange Act is recorded, processed, summarized, and reported within the time periods specified by the SEC’s rules and forms, including a reasonable level of assurance that such information is accumulated and communicated to our management, including our principal executive and principal financial officers, as appropriate to allow timely decisions regarding required disclosure. Management’s Report on Internal Control over Financial Reporting Our management is responsible for establishing and maintaining adequate internal control over financial reporting, as such term is defined in Exchange Act Rule 13a-15(f), in providing reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. Under the supervision and with the participation of our management, including our principal executive officer and principal financial officer, we evaluated the effectiveness of our internal control over financial reporting based on the framework in Internal Control-Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 framework) (COSO). Based on our evaluation under the framework in Internal Control-Integrated Framework issued by COSO and applicable Securities and Exchange Commission rules, our management concluded that our internal control over financial reporting was effective as of September 30, 2023, in providing reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. Ernst & Young LLP has issued its report on the effectiveness of the Company’s internal control over financial reporting. That report appears below. /s/ JOHN K. AKERS John K. Akers President, Chief Executive Officer and Director /s/ CHRISTOPHER T. FORSYTHE Christopher T. Forsythe Senior Vice President and Chief Financial Officer November 14, 2023 86 REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM To the Shareholders and the Board of Directors of Atmos Energy Corporation Opinion on Internal Control Over Financial Reporting We have audited Atmos Energy Corporation’s internal control over financial reporting as of September 30, 2023, based on criteria established in Internal Control - Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 framework) (the COSO criteria). In our opinion, Atmos Energy Corporation (the Company) maintained, in all material respects, effective internal control over financial reporting as of September 30, 2023, based on the COSO criteria. We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the 2023 consolidated financial statements of the Company and our report dated November 14, 2023 expressed an unqualified opinion thereon. Basis for Opinion The Company’s management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting included in the accompanying Management’s Report on Internal Control over Financial Reporting. Our responsibility is to express an opinion on the Company’s internal control over financial reporting based on our audit. 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 U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB. We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion. Definition and Limitations of Internal Control Over Financial Reporting A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements. Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate. /s/ Ernst & Young LLP Dallas, Texas November 14, 2023 87 Changes in Internal Control over Financial Reporting We did not make any changes in our internal control over financial reporting (as defined in Rule 13a-15(f) and 15d-15(f) under the Act) during the fourth quarter of the fiscal year ended September 30, 2023 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting. ITEM 9B. Other Information. During the three months ended September 30, 2023, no director or officer of the Company adopted or terminated a "Rule 10b5-1 trading arrangement" or "non-Rule 10b5-1 trading arrangement," as each term is defined in Item 408(a) of Regulation S-K. ITEM 9C. Disclosure Regarding Foreign Jurisdictions that Prevent Inspections. Not applicable. PART III ITEM 10. Directors, Executive Officers and Corporate Governance. Information regarding directors is incorporated herein by reference to the Company’s Definitive Proxy Statement for the Annual Meeting of Shareholders on February 7, 2024. Information regarding executive officers is reported below: INFORMATION ABOUT OUR EXECUTIVE OFFICERS The following table sets forth certain information as of September 30, 2023, regarding the executive officers of the Company. It is followed by a brief description of the business experience of each executive officer. Name John K. Akers Christopher T. Forsythe John S. McDill Karen E. Hartsfield John M. Robbins Age 60 52 59 53 53 Years of Service 32 20 36 8 10 Office Currently Held President, Chief Executive Officer and Director Senior Vice President and Chief Financial Officer Senior Vice President, Utility Operations Senior Vice President, General Counsel and Corporate Secretary Senior Vice President, Human Resources John K. (Kevin) Akers was named President and Chief Executive Officer and was appointed to the Board of Directors effective October 1, 2019. Mr. Akers joined the company in 1991. Mr. Akers assumed increased responsibilities over time and was named President of the Mississippi Division in 2002. He was later named President of the Kentucky/Mid-States Division in May 2007, a position he held until December 2016. Effective January 1, 2017, Mr. Akers was named Senior Vice President, Safety and Enterprise Services and was responsible for customer service, facilities management, safety and supply chain management. In November 2018, Mr. Akers was named Executive Vice President and assumed oversight responsibility for APT. Christopher T. Forsythe was named Senior Vice President and Chief Financial Officer effective February 1, 2017. Mr. Forsythe joined the Company in June 2003 and prior to this promotion, served as the Company's Vice President and Controller from May 2009 through January 2017. Prior to joining Atmos Energy, Mr. Forsythe worked in public accounting for 10 years. John S. McDill was named Senior Vice President, Utility Operations, effective October 1, 2021. In this role, Mr. McDill is responsible for the operations of Atmos Energy's six utility divisions as well as gas supply. Prior to this promotion, Mr. McDill served as Vice President, Pipeline Safety from May 2012 to September 2021. Mr. McDill also served as Vice President of Operations in our Mississippi Division. Mr. McDill's years of service include that with Mississippi Valley Gas, a company acquired by Atmos Energy in 2002. Karen E. Hartsfield was named Senior Vice President, General Counsel and Corporate Secretary of Atmos Energy, effective August 7, 2017. Ms. Hartsfield joined the Company in June 2015, after having served in private practice for 19 years, 88 most recently as Managing Partner of Jackson Lewis LLP in its Dallas office from July 2013 to June 2015. Prior to joining Jackson Lewis as a partner in January 2009, Ms. Hartsfield was a partner with Baker Botts LLP in Dallas. John M. (Matt) Robbins was named Senior Vice President, Human Resources, effective January 1, 2017. Mr. Robbins joined the Company in May 2013 and prior to this promotion served as Vice President, Human Resources from February 2015 to December 2016. Before joining Atmos Energy, Mr. Robbins had over 20 years of experience in human resources. Identification of the members of the Audit Committee of the Board of Directors as well as the Board of Directors’ determination as to whether one or more audit committee financial experts are serving on the Audit Committee of the Board of Directors is incorporated herein by reference to the Company’s Definitive Proxy Statement for the Annual Meeting of Shareholders on February 7, 2024. The Company has adopted a code of ethics for its principal executive officer, principal financial officer and principal accounting officer. Such code of ethics is represented by the Company’s Code of Conduct, which is applicable to all directors, officers and employees of the Company, including the Company’s principal executive officer, principal financial officer and principal accounting officer. A copy of the Company's Code of Conduct, as well as any amendment to or waiver granted from a provision of the Company's Code of Conduct is posted on the Company's website at www.atmosenergy.com/company/ corporate-responsibility-reports. ITEM 11. Executive Compensation. Information on executive compensation is incorporated herein by reference to the Company’s Definitive Proxy Statement for the Annual Meeting of Shareholders on February 7, 2024, under the captions "Director Compensation," "Compensation Discussion and Analysis," "Other Executive Compensation Matters" and "Named Executive Officer Compensation." ITEM 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters. Security ownership of certain beneficial owners and of management is incorporated herein by reference to the Company’s Definitive Proxy Statement for the Annual Meeting of Shareholders on February 7, 2024, under the heading "Beneficial Ownership of Common Stock." Information concerning our equity compensation plans is provided in Part II, Item 5, “Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities”, of this Annual Report on Form 10-K. ITEM 13. Certain Relationships and Related Transactions, and Director Independence. Information on certain relationships and related transactions as well as director independence is incorporated herein by reference to the Company’s Definitive Proxy Statement for the Annual Meeting of Shareholders on February 7, 2024, under the heading "Corporate Governance and Other Board Matters," and "Proposal One – Election of Directors." ITEM 14. Principal Accountant Fees and Services. Information on our principal accountant’s fees and services is incorporated herein by reference to the Company’s Definitive Proxy Statement for the Annual Meeting of Shareholders on February 7, 2024, under the heading "Proposal Two – Ratification of Appointment of Independent Registered Public Accounting Firm." PART IV ITEM 15. Exhibits and Financial Statement Schedules. (a) 1. and 2. Financial statements and financial statement schedules. The financial statements listed in the Index to Financial Statements in Part II, Item 8 are filed as part of this Form 10-K. All 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. 89 3. Exhibits Exhibit Number 3.1 3.2 3.3 Description Articles of Incorporation and Bylaws Page Number or Incorporation by Reference to Restated Articles of Incorporation of Atmos Energy Corporation - Texas (As Amended Effective February 3, 2010) Restated Articles of Incorporation of Atmos Energy Corporation - Virginia (As Amended Effective February 3, 2010) Exhibit 3.1 to Form 10-Q dated March 31, 2010 (File No. 1-10042) Exhibit 3.2 to Form 10-Q dated March 31, 2010 (File No. 1-10042) Amended and Restated Bylaws of Atmos Energy Corporation (as of August 4, 2023) Exhibit 3.1 to Form 8-K dated August 1, 2023 (File No. 1-10042) Instruments Defining Rights of Security Holders, Including Indentures 4.1(a) Specimen Common Stock Certificate (Atmos Energy Corporation) Exhibit 4.1 to Form 10-K for fiscal year ended September 30, 2012 (File No. 1-10042) 4.1(b) Description of Registrant's Securities Indenture dated as of November 15, 1995 between United Cities Gas Company and Bank of America Illinois, Trustee Indenture dated as of July 15, 1998 between Atmos Energy Corporation and U.S. Bank Trust National Association, Trustee Exhibit 4.1(b) to Form 10-K for fiscal year ended September 30, 2021 (File No. 1-10042) Exhibit 4.11(a) to Form S-3 dated August 31, 2004 (File No. 333-118706) Exhibit 4.8 to Form S-3 dated August 31, 2004 (File No. 333-118706) Indenture dated as of May 22, 2001 between Atmos Energy Corporation and SunTrust Bank, Trustee Exhibit 99.3 to Form 8-K dated May 22, 2001 (File No. 1-10042) Indenture dated as of March 26, 2009 between Atmos Energy Corporation and U.S. Bank National Corporation, Trustee Underwriting Agreement among Atmos Energy Kansas Securitization I, LLC, Atmos Energy Corporation and J.P. Morgan Securities LLC, dated June 9, 2023 Indenture by and among Atmos Energy Kansas Securitization I, LLC, U.S. Bank Trust Company, National Association, as Indenture Trustee, and U.S. Bank National Association, as Securities Intermediary (including the form of the Bonds and the Series Supplement), dated as of June 20, 2023 Series Supplement by and among Atmos Energy Kansas Securitization I, LLC and U. S. Bank Trust Company, National Association, as Indenture Trustee, and U.S. Bank National Association, as Securities Intermediary, dated as of June 20, 2023 Debenture Certificate for the 6 3/4% Debentures due 2028 Global Security for the 5.95% Senior Notes due 2034 Officers' Certificate dated June 10, 2011 Global Security for the 5.5% Senior Notes due 2041 90 Exhibit 4.1 to Form 8-K dated March 26, 2009 (File No. 1-10042) Exhibit 1.1 of Form 8-K dated June 9, 2023 (File No. 1-10042) Exhibit 4.1 to Form 8-K dated June 20, 2023 (File No. 1-10042) Exhibit 4.2 to Form 8-K dated June 20, 2023 (File No. 1-10042) Exhibit 99.2 to Form 8-K dated July 29, 1998 (File No. 1-10042) Exhibit 10(2)(g) to Form 10-K for fiscal year ended September 30, 2004 (File No. 1-10042) Exhibit 4.1 to Form 8-K dated June 13, 2011 (File No. 1-10042) Exhibit 4.2 to Form 8-K dated June 13, 2011 (File No. 1-10042) 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9(a) 4.9(b) 4.9(c) 4.9(d) 4.9(e) 4.9(f) 4.9(g) 4.9(h) 4.9(i) 4.9(j) 4.9(k) 4.9(l) 4.9(m) 4.9(n) 4.9(o) 4.9(p) 4.9(q) 4.9(r) 4.9(s) 4.9(t) 4.9(u) 4.9(v) 4.9(w) 4.9(x) 4.9(y) 4.9(z) 4.9(aa) Officers' Certificate dated January 11, 2013 Global Security for the 4.15% Senior Notes due 2043 Officers' Certificate dated October 15, 2014 Exhibit 4.1 to Form 8-K dated January 15, 2013 (File No. 1-10042) Exhibit 4.2 to Form 8-K dated January 15, 2013 (File No. 1-10042) Exhibit 4.1 to Form 8-K dated October 17, 2014 (File No. 1-10042) Global Security for the 4.125% Senior Notes due 2044 Exhibit 4.2 to Form 8-K dated October 17, 2014 (File No. 1-10042) Officers' Certificate dated June 8, 2017 Exhibit 4.1 to Form 8-K dated June 8, 2017 (File No. 1-10042) Global Security for the 3.000% Senior Notes due 2027 Exhibit 4.2 to Form 8-K dated June 8, 2017 (File No. 1-10042) Global Security for the 4.125% Senior Notes due 2044 Exhibit 4.3 to Form 8-K dated June 8, 2017 (File No. 1-10042) Officers' Certificate dated October 4, 2018 Global Security for the 4.300% Senior Notes due 2048 Global Security for the 4.300% Senior Notes due 2048 Officers' Certificate dated March 4, 2019 Global Security for the 4.125% Senior Notes due 2049 Officers' Certificate dated October 2, 2019 Global Security for the 2.625% Senior Notes due 2029 Global Security for the 3.375% Senior Notes due 2049 Officers' Certificate dated October 1, 2020 Global Security for the 1.500% Senior Notes due 2031 Global Security for the 1.500% Senior Notes due 2031 Officers' Certificate dated October 1, 2021 Global Security for the 2.850% Senior Notes due 2052 Global Security for the 2.850% Senior Notes due 2052 Officers' Certificate dated January 14, 2022 Global Security for the 2.625% Senior Notes due 2029 4.9(bb) Officers' Certificate dated October 3, 2022 4.9(cc) 4.9(dd) Global Security for the 5.450% Senior Notes due 2032 Global Security for the 5.750% Senior Notes due 2052 91 Exhibit 4.1 to Form 8-K dated October 4, 2018 (File No. 1-10042) Exhibit 4.2 to Form 8-K dated October 4, 2018 (File No. 1-10042) Exhibit 4.3 to Form 8-K dated October 4, 2018 (File No. 1-10042) Exhibit 4.1 to Form 8-K dated March 4, 2019 (File No. 1-10042) Exhibit 4.2 to Form 8-K dated March 4, 2019 (File No. 1-10042) Exhibit 4.1 to Form 8-K dated October 2, 2019 (File No. 1-10042) Exhibit 4.2 to Form 8-K dated October 2, 2019 (File No. 1-10042) Exhibit 4.3 to Form 8-K dated October 2, 2019 (File No. 1-10042) Exhibit 4.1 to Form 8-K dated October 1, 2020 (File No. 1-10042) Exhibit 4.2 to Form 8-K dated October 1, 2020 (File No. 1-10042) Exhibit 4.3 to Form 8-K dated October 1, 2020 (File No. 1-10042) Exhibit 4.1 to Form 8-K dated October 1, 2021 (File No. 1-10042) Exhibit 4.2 to Form 8-K dated October 1, 2021 (File No. 1-10042) Exhibit 4.3 to Form 8-K dated October 1, 2021 (File No. 1-10042) Exhibit 4.1 to Form 8-K dated January 14, 2022 (File No. 1-10042) Exhibit 4.2 to Form 8-K dated January 14, 2022 (File No. 1-10042) Exhibit 4.1 to Form 8-K dated October 3, 2022 (File No. 1-10042) Exhibit 4.2 to Form 8-K dated October 3, 2022 (File No. 1-10042) Exhibit 4.3 to Form 8-K dated October 3, 2022 (File No. 1-10042) 4.9(ee) Officers' Certificate dated October 10, 2023 4.9(ff) 4.9(gg) 10.1(a) 10.1(b) 10.2(a) 10.2(b) 10.3 10.4(a) Global Security for the 5.900% Senior Notes due 2033 Global Security for the 6.200% Senior Notes due 2053 Material Contracts Revolving Credit Agreement, dated as of March 31, 2021, among Atmos Energy Corporation, Crédit Agricole Corporate and Investment Bank, as the Administrative Agent, the agents, arrangers and bookrunners named therein, and the lenders named therein First Amendment to Revolving Credit Agreement, dated as of March 31, 2022, among Atmos Energy Corporation, Credit Agricole Corporate and Investment Bank, as the Administrative Agent, the agents, arrangers and bookrunners named therein, and the lenders named therein Revolving Credit Agreement, dated as of March 31, 2021, among Atmos Energy Corporation, Crédit Agricole Corporate and Investment Bank, as the Administrative Agent, the agents, arrangers and bookrunners named therein, and the lenders named therein First Amendment to Revolving Credit Agreement, dated as of March 31, 2022, among Atmos Energy Corporation, Credit Agricole Corporate and Investment Bank, as the Administrative Agent, the agents, arrangers and bookrunners named therein, and the lenders named therein Term Loan Agreement, dated as of March 3, 2023, among Atmos Energy Corporation, U.S. Bank National Association, as the Administrative Agent, Mizuho Bank, Ltd., as Syndication Agent, CoBank, ACB, as Documentation Agent, U.S. Bank National Association, Mizuho Bank, Ltd. and CoBank ACB, as Joint Lead Arrangers and Joint-Bookrunners and the lenders named therein Equity Distribution Agreement, dated as of June 29, 2021, among Atmos Energy Corporation and the Managers and Forward Purchasers named in Schedule A thereto 10.4(b) Form of Master Forward Sale Confirmation 10.5(a) Equity Distribution Agreement, dated as of March 23, 2022, among Atmos Energy Corporation and the Managers and Forward Purchasers named in Schedule A thereto 10.5(b) Form of Master Forward Sale Confirmation 10.6(a) Equity Distribution Agreement, dated as of March 31, 2023, among Atmos Energy Corporation and the Managers and Forward Purchasers named in Schedule A thereto 10.6(b) Form of Master Forward Sale Confirmation 92 Exhibit 4.2 to Form 8-K dated October 10, 2023 (File No. 1-10042) Exhibit 4.3 to Form 8-K dated October 10, 2023 (File No. 1-10042) Exhibit 4.4 to Form 8-K dated October 10, 2023 (File No. 1-10042) Exhibit 10.1 to Form 8-K dated March 31, 2021 (File No. 1-10042) Exhibit 10.2 to Form 8-K dated April 1, 2022 (File No. 1-10042) Exhibit 10.2 to Form 8-K dated March 31, 2021 (File No. 1-10042) Exhibit 10.1 to Form 8-K dated April 1, 2022 (File No. 1-10042) Exhibit 10.1 to Form 8-K dated March 3, 2023 (File No. 1-10042) Exhibit 1.1 to Form 8-K dated June 29, 2021 (File No. 1-10042) Exhibit 1.2 to Form 8-K dated June 29, 2021 (File No. 1-10042) Exhibit 1.1 to Form 8-K dated March 23, 2022 (File No. 1-10042) Exhibit 1.2 to Form 8-K dated March 23, 2022 (File No. 1-10042) Exhibit 1.1 to Form 8-K dated March 31, 2023 (File No. 1-10042) Exhibit 1.2 to Form 8-K dated March 31, 2023 (File No. 1-10042) 10.7(a)* 10.7(b)* 10.8(a)* 10.8(b)* 10.9* 10.10(a)* 10.10(b)* 10.11(a)* 10.11(b)* 10.12* 10.13(a)* Executive Compensation Plans and Arrangements Form of Atmos Energy Corporation Change in Control Severance Agreement - Tier I Exhibit 10.7(a) to Form 10-K for fiscal year ended September 30, 2010 (File No. 1-10042) Form of Atmos Energy Corporation Change in Control Severance Agreement - Tier II Exhibit 10.7(b) to Form 10-K for fiscal year ended September 30, 2010 (File No. 1-10042) Atmos Energy Corporation Executive Retiree Life Plan Exhibit 10.31 to Form 10-K for fiscal year ended September 30, 1997 (File No. 1-10042) Amendment No. 1 to the Atmos Energy Corporation Executive Retiree Life Plan Exhibit 10.31(a) to Form 10-K for fiscal year ended September 30, 1997 (File No. 1-10042) Atmos Energy Corporation Annual Incentive Plan for Management (as amended and restated August 3, 2021) Atmos Energy Corporation Supplemental Executive Benefits Plan, Amended and Restated in its Entirety August 7, 2007 Exhibit 10.1 to Form 8-K dated August 3, 2021 (File No. 1-10042) Exhibit 10.8(a) to Form 10-K for fiscal year ended September 30, 2008 (File No. 1-10042) Form of Individual Trust Agreement for the Supplemental Executive Benefits Plan Exhibit 10.3 to Form 10-Q for quarter ended December 31, 2000 (File No. 1-10042) Atmos Energy Corporation Supplemental Executive Retirement Plan (As Amended and Restated, Effective as of January 1, 2016) Atmos Energy Corporation Performance-Based Supplemental Executive Benefits Plan Trust Agreement, Effective Date December 1, 2000 Atmos Energy Corporation Account Balance Supplemental Executive Retirement Plan (As Amended and Restated, Effective as of January 1, 2022) Mini-Med/Dental Benefit Extension Agreement dated October 1, 1994 Exhibit 10.7(a) to Form 10-K for fiscal year ended September 30, 2016 (File No. 1-10042) Exhibit 10.1 to Form 10-Q for quarter ended December 31, 2000 (File No. 1-10042) Exhibit 10.1 to Form 10-Q dated December 31, 2021 (File No. 1-10042) Exhibit 10.28(f) to Form 10-K for fiscal year ended September 30, 2001 (File No. 1-10042) 10.13(b)* Amendment No. 1 to Mini-Med/Dental Benefit Extension Agreement dated August 14, 2001 Exhibit 10.28(g) to Form 10-K for fiscal year ended September 30, 2001 (File No. 1-10042) 10.13(c)* 10.14* 10.15(a)* 10.15(b)* 10.15(c)* Amendment No. 2 to Mini-Med/Dental Benefit Extension Agreement dated December 31, 2002 Exhibit 10.1 to Form 10-Q for quarter ended December 31, 2002 (File No. 1-10042) Atmos Energy Corporation Equity Incentive and Deferred Compensation Plan for Non-Employee Directors, Amended and Restated as of January 1, 2012 Atmos Energy Corporation 1998 Long-Term Incentive Plan (as amended and restated February 3, 2021) Form of Award Agreement of Time-Lapse Restricted Stock Units under the Atmos Energy Corporation 1998 Long-Term Incentive Plan Form of Award Agreement of Performance-Based Restricted Stock Units under the Atmos Energy Corporation 1998 Long-Term Incentive Plan Exhibit 10.1 to Form 10-Q for quarter ended December 31, 2011 (File No. 1-10042) Exhibit 10.14(a) to Form 10-K for fiscal year ended September 30, 2022 (File No. 1-10042) Exhibit 10.13(b) to Form 10-K for fiscal year ended September 20, 2020 (File No. 1-10042) Exhibit 10.13(c) to Form 10-K for fiscal year ended September 20, 2020 (File No. 1-10042) 93 10.15(d)* 10.15(e)* Form of Non-Employee Director Award Agreement of Time-Lapse Restricted Stock Units Under the Atmos Energy Corporation 1998 Long-Term Incentive Plan Form of Non-Employee Director Award Agreement of Stock Unit Awards Under The Atmos Energy Corporation 1998 Long-Term Incentive Plan Exhibit 10.11(d) to Form 10-K for fiscal year ended September 30, 2019 (File No. 1-10042) Exhibit 10.11(e) to Form 10-K for fiscal year ended September 30, 2019 (File No. 1-10042) Other Exhibits, as indicated Subsidiaries of the registrant Consent of independent registered public accounting firm, Ernst & Young LLP Power of Attorney Rule 13a-14(a)/15d-14(a) Certifications Section 1350 Certifications** Policy Relating to Recovery of Erroneously Awarded Compensation Atmos Energy Corporation Executive Compensation Recoupment Policy, Effective October 2, 2023 Interactive Data File Signature page of Form 10-K for fiscal year ended September 30, 2023 XBRL Instance Document - the Instance Document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document Inline XBRL Taxonomy Extension Schema Inline XBRL Taxonomy Extension Calculation Linkbase Inline XBRL Taxonomy Extension Definition Linkbase Inline XBRL Taxonomy Extension Labels Linkbase Inline XBRL Taxonomy Extension Presentation Linkbase Cover Page Interactive Data File - the cover page interactive data file does not appear in the interactive data file because its XBRL tags are embedded within the Inline XBRL document This exhibit constitutes a "management contract or compensatory plan, contract, or arrangement." These certifications pursuant to 18 U.S.C. Section 1350 by the Company’s Chief Executive Officer and Chief Financial Officer, furnished as Exhibit 32 to this Annual Report on Form 10-K, will not be deemed to be filed with the Securities and Exchange Commission or incorporated by reference into any filing by the Company under the Securities Act of 1933 or the Securities Exchange Act of 1934, except to the extent that the Company specifically incorporates such certifications by reference. 21 23.1 24 31 32 97.1 101.INS 101.SCH 101.CAL 101.DEF 101.LAB 101.PRE 104 * ** ITEM 16. Form 10-K Summary. Not applicable. 94 Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. SIGNATURES By: ATMOS ENERGY CORPORATION (Registrant) /s/ CHRISTOPHER T. FORSYTHE Christopher T. Forsythe Senior Vice President and Chief Financial Officer Date: November 14, 2023 95 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below hereby constitutes and appoints John K. Akers and Christopher T. Forsythe, or either of them acting alone or together, as his true and lawful attorney- in-fact and agent with full power to act alone, for him and in his name, place and stead, in any and all capacities, to sign any and all amendments to this Annual Report on Form 10-K, and to file the same, with all exhibits thereto, and all other documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorney-in-fact and agent full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully to all intents and purposes as he might or could do in person, hereby ratifying and confirming all that said attorney-in-fact and agent, may lawfully do or cause to be done by virtue hereof. Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the date indicated: /s/ KIM R. COCKLIN Kim R. Cocklin /s/ JOHN K. AKERS John K. Akers Chairman of the Board November 14, 2023 President, Chief Executive Officer and Director November 14, 2023 /s/ CHRISTOPHER T. FORSYTHE Christopher T. Forsythe Senior Vice President and Chief Financial Officer November 14, 2023 /s/ RICHARD M. THOMAS Richard M. Thomas Vice President and Controller (Principal Accounting Officer) November 14, 2023 /s/ JOHN C. ALE John C. Ale /s/ KELLY H. COMPTON Kelly H. Compton /s/ SEAN DONOHUE Sean Donohue /s/ RAFAEL G. GARZA Rafael G. Garza /s/ RICHARD K. GORDON Richard K. Gordon /s/ NANCY K. QUINN Nancy K. Quinn /s/ RICHARD A. SAMPSON Richard A. Sampson /s/ DIANA J. WALTERS Diana J. Walters /s/ FRANK YOHO Frank Yoho Director November 14, 2023 Director November 14, 2023 Director Director Director November 14, 2023 November 14, 2023 November 14, 2023 Director November 14, 2023 Director November 14, 2023 Director Director November 14, 2023 November 14, 2023 96 Corporate Information Common Stock Listing New York Stock Exchange. Trading symbol: ATO Stock Transfer Agent and Registrar Broadridge Corporate Issuer Solutions, Inc. P.O. Box 1342 Brentwood, NY 11717 800-543-3038 To inquire about your Atmos Energy common stock, please call Broadridge at the telephone number above. You may use the agent’s interactive voice response system 24 hours a day to learn about transferring stock or to check your recent account activity, all without the assistance of a customer service representative. Please have available your Atmos Energy shareholder account number and your Social Security or federal taxpayer ID number. To speak to a Broadridge customer service representative, please call the same number between 9 a.m. and 6 pm. Eastern time, Monday through Friday. You may also find more information at https://shareholder.broadridge.com/ATO. Independent Registered Public Accounting Firm Ernst & Young LLP One Victory Park Suite 2000 2323 Victory Avenue Dallas, Texas 75219 214-969-8000 Annual Report Atmos Energy Corporation’s 2023 Annual Report including our Form 10-K is available at no charge from Investor Relations, Atmos Energy Corporation, P.O. Box 650205, Dallas, Texas 75265-0205 or by calling 972-855-3729, Monday through Friday, between 8 a.m. and 5 p.m. Central time. Atmos Energy’s 2023 Annual Report also may be viewed on Atmos Energy’s website at www.atmosenergy.com. Annual Meeting of Shareholders The 2024 Annual Meeting of Shareholders will be on Wednesday, February 7, 2024, at 9:00 a.m. Central time, and will be conducted virtually via webcast. Please see your proxy materials for further information. Direct Stock Purchase Plan Atmos Energy has a Direct Stock Purchase Plan that is available to all investors. For an Enrollment Application Form and a Plan Prospectus, please call Broadridge at 800-543-3038. The Prospectus is also available at www.atmosenergy.com. You may also obtain information by writing to Investor Relations, Atmos Energy Corporation, P.O. Box 650205, Dallas, Texas 75265-0205. This is not an offer to sell, or a solicitation to buy, any securities of Atmos Energy Corporation. Shares of Atmos Energy common stock purchased through the Direct Stock Purchase Plan will be offered only by prospectus. Atmos Energy on the Internet Information about Atmos Energy is available at www.atmosenergy.com. Our website includes news releases, current and historical financial reports, other investor data, corporate governance documents, management biographies, customer information and facts about Atmos Energy’s operations. Atmos Energy Corporation Contacts To contact Atmos Energy’s Investor Relations, call 972-855-3729, Monday through Friday, between 8 a.m. and 5 p.m. Central time or send an email message to InvestorRelations@atmosenergy.com. Securities analysts and investment managers, please contact: Dan Meziere Vice President, Investor Relations and Treasurer 972-855-3729 InvestorRelations@atmosenergy.com Atmos Energy Corporation P.O. Box 650205 Dallas, Texas 75265-0205 atmosenergy.com