Company: ATO
Filing Date: 2025-06-26
Form Type: 11-K
Source: 0000731802-25-000020
Chunk: 13

Company: ATMOS ENERGY CORP
Filing Date: 2025-06-26
Form: 11-K
Chunk 13
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| **  |     | Cost information in column (d) is not required for participant-directed investments |     |                                                                        |     |      |     |         |               |

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### SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the Qualified Retirement Plans and Trusts Committee, the Trustee of the Atmos Energy Corporation Retirement Savings Plan and Trust, as amended, has duly caused this annual report to be signed on its behalf by the undersigned, hereunto duly authorized.

| ATMOS ENERGY CORPORATION          
 RETIREMENT SAVINGS PLAN AND TRUST |     |                             |
| By:                               |     | /s/ CHRISTOPHER T. FORSYTHE |
|                                   |     | Christopher T. Forsythe     |
|                                   |     | Chairman of the Qualified   
 Retirement Plans and        
 Trusts Committee            |

June 26, 2025

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### EXHIBITS INDEX
| Exhibit Number |     | Description                                                                |     | Page Number or Incorporation by Reference to |
| 23.1           |     | Consent of Independent Registered Public Accounting Firm, Whitley Penn LLP |     |                                              |

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