Company: ATO
Filing Date: 2025-12-09
Form Type: PRE 14A
Source: 0000731802-25-000061
Chunk: 69

Company: ATMOS ENERGY CORP
Filing Date: 2025-12-09
Form: PRE 14A
Chunk 69
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 the Company and its shareholders.

Please see Appendix E which sets forth the Clean-Up Amendments to the Amended and Restated Certificate of Formation to be filed in the State of Texas and Appendix F which sets forth the Clean-Up Amendments to the Restated Articles of Incorporation to be filed in the Commonwealth of Virginia, and, in each case, marks those changes specifically.

Approval of the Clean-Up Amendments requires the affirmative vote of the holders of more than two-thirds of the outstanding shares of the Company’s common stock entitled to vote. If the Clean-Up Amendments are approved, they will become effective upon filing of an appropriate certificate with the Secretary of State of the State of Texas and upon the issuance of a Certificate of Restatement by the Commonwealth of Virginia State Corporation Commission. We anticipate making the necessary filings as soon as practicable following shareholder approval of the Clean-Up Amendments. All other sections of the Existing Articles would be maintained in their current form (except to the extent an amendment is approved pursuant to Proposals 4, 5, 6 or 7). For the avoidance of doubt, approval of the proposed amendments contained in Proposals 4, 5, 6, or 7 by the shareholders would not impact the Clean-Up Amendments.

Our Board of Directors reserves the right to elect to abandon the Clean-Up Amendments at any time before they become effective even if they are is approved by the shareholders. If the shareholders do not approve the Clean Up Amendments our Existing Articles would remain in effect in their entirety (except to the extent they are amended pursuant to Proposals 4, 5, 6 or 7).

#### 66Atmos Energy
| Beneficial Ownership of Common Stock |

#### Security Ownership of Certain Beneficial Owners
The following table lists the beneficial ownership with respect to each person known by us to be the beneficial owner of more than 5% of any class of our voting securities as of December 12, 2025:

| Title of Class |     | Name and Address                                          
 of Beneficial Owner                                       |     | Amount and Nature of 
 Beneficial Ownership |            |     | Percent (%) 
 of Class(a) |
| Common stock   |     | The Vanguard Group, Inc.(b)                               
 100 Vanguard Blvd.                                        
 Malvern, PA 19355                                         |     |                      | 19,344,837 |     |             |
| Common stock   |     | BlackRock, Inc.(c)                                        
 50 Hudson Yards                                           
 New York, NY 10001                                        |     |