Company: ATO
Filing Date: 2025-12-09
Form Type: PRE 14A
Source: 0000731802-25-000061
Chunk: 1

Company: ATMOS ENERGY CORP
Filing Date: 2025-12-09
Form: PRE 14A
Chunk 1
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holder Proposals for the 2027 Annual Meeting                                                                                                           |     |                                                                                                                                                           |     |  70 |
| Annual Report                                                                                                                                               |     |                                                                                                                                                           |     |  71 |
| Other Business                                                                                                                                              |     |                                                                                                                                                           |     |  71 |
| Appendix AAmendment to Articles of Incorporation to Increase the Number of Authorized Shares of Common Stock                                                |     |                                                                                                                                                           |     | A-1 |
| Appendix BAmendment to Articles of Incorporation to Provide for Plurality Voting in the Event of a Contested Election                                       |     |                                                                                                                                                           |     | B-1 |
| Appendix CAmendment to Articles of Incorporation to Limit the Liability of Certain Officers as Permitted by Texas and Virginia Law                          |     |                                                                                                                                                           |     | C-1 |
| Appendix DAmendment to Articles of Incorporation to Clarify the Indemnification Provisions                                                                  |     |                                                                                                                                                           |     | D-1 |
| Appendix EAmendment to Texas Articles of Incorporation to Remove Obsolete Provisions and Make Certain Other Clarifying, Technical, and Conforming Changes   |     |                                                                                                                                                           |     | E-1 |
| AppendixFAmendment to Virginia Articles of Incorporation to Remove Obsolete Provisions and Make Certain Other Clarifying, Technical, and Conforming Changes |     |                                                                                                                                                           |     | F-1 |

#### 2Atmos Energy
| Notice of Annual Meeting of Shareholders |

#### 2026 Annual Meeting Information

### Annual Meeting Business
Atmos Energy Corporation’s annual meeting of shareholders will be held February 4, 2026 to:

| 1 |     |                                                                                         |     | Page10 |     | 2 |     |                                                                                                                                                                                  |     | Page32 |     | 3 |     |                                                                                                                               |     | Page34 |     | 4 |     |                                                                                                            |     | Page62 |
|   |     | Elect the 12 directors named in the proxy statement for one-year terms expiring in 2027 |     |        |     |   |     | Ratify the Audit Committee’s appointment of Ernst & Young LLP (“Ernst & Young” or “E&Y”) to serve as the Company’s independent registered public accounting firm for fiscal 2026 |     |        |     |   |     | Approve, on an advisory basis, the compensation of the named executive officers of the Company for fiscal 2025 (“Say-on-Pay”) |