Company: ATO
Filing Date: 2025-12-09
Form Type: PRE 14A
Source: 0000731802-25-000061
Chunk: 4

Company: ATMOS ENERGY CORP
Filing Date: 2025-12-09
Form: PRE 14A
Chunk 4
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| William J. Ware                                                                                                    
 President and Director of Amarillo National Bank                                                                   |     |  47 |     |          |     |            |     |    |     |    |     |    |
| Frank Yoho                                                                                                         
 Former Executive Vice President and President of Natural Gas, Duke Energy                                          |     |  66 |     |     2020 |     |            |     |    |     |    |     |    |

| AC |     | = |     | Audit                                              |     | EC |     | = |     | Executive   |
| HR |     | = |     | Human Resources                                    |     |    |     | = |     | Member      |
| NC |     | = |     | Nominating and Corporate Governance                |     |    |     | = |     | Chair       |
| CR |     | = |     | Corporate Responsibility, Sustainability, & Safety |     |    |     | = |     | Independent |

(a) Richard A. Sampson, Lead Director and Chair of the Human Resources Committee and Executive Committee, reached mandatory retirement age, and therefore is not standing for re-election.

(b) The director is not independent and accordingly is not eligible to be a member of any of the committees except the Executive Committee and/or the Corporate Responsibility, Sustainability, & Safety Committee, pursuant to the rules of the New York Stock Exchange.

#### 2026 Proxy Statement7
Proxy Statement Overview

#### Board Highlights
| Independence                             |     | Tenure                                                   |     |                   |
|                                          |     |                                                          |     | 6.5 years         
 Average Tenure    |
| 92% of Director Nominees are Independent |     |                                                          |     |                   |
| Gender                                   |     | Race/Ethnicity                                           |     |                   |
|                                          |     |                                                          |     | 42%               
 Board Refreshment 
 (last five years) |
| 33% of Director Nominees are Women       |     | 17% of Director Nominees are Racially/Ethnically Diverse |     |                   |

#### Corporate Governance Highlights
Our corporate governance policies and practices promote the long-term interests of our shareholders, strengthen the accountability of our Board of Directors (“Board”) and management, and help build public trust in the Company. Below is a summary of some of the highlights of our corporate governance framework.

### BOARD PRACTICES
independent Lead Director

separation of Chairman and CEO

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