Company: ATO
Filing Date: 2025-10-01
Form Type: 8-K
Source: 0001193125-25-225956
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Company: ATMOS ENERGY CORP
Filing Date: 2025-10-01
Form: 8-K
Item: Item 8.01
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Item 8.01. Other Events.

On September 18, 2025 Atmos Energy Corporation (“ Atmos Energy”) entered into an underwriting agreement (the “ Underwriting Agreement”) with BNP Paribas Securities Corp., Credit Agricole Securities (USA) Inc., Mizuho Securities USA LLC and U. S. Bancorp Investments, Inc., as representatives of the several underwriters named in Schedule I thereto, with respect to the offering and sale in an underwritten public offering (the “ Offering”) by Atmos Energy of $600 million aggregate principal amount of its 5.450% Senior Notes due 2056 (the “ Notes”). The Offering has been registered under the Securities Act of 1933, as amended (the “ Securities Act”), pursuant to a registration statement on FormS-3(RegistrationNo. 333-283563)of Atmos Energy (the “ Registration Statement”) and the prospectus supplement dated September 18, 2025, which was filed with the Securities and Exchange Commission pursuant to Rule 424(b) of the Securities Act on September 22, 2025. Legal opinions related to the Registration Statement are also filed herewith as Exhibits 5.1 and 5.2.