Company: ATO
Filing Date: 2025-12-19
Form Type: DEF 14A
Source: 0000731802-25-000076
Chunk: 62

Company: ATMOS ENERGY CORP
Filing Date: 2025-12-19
Form: DEF 14A
Chunk 62
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 compares the Company’s TSR performance with the benchmarking peer group’s TSR performance. The Company’s and the benchmarking peer group’s TSR amounts assume that $100 was invested beginning on September 30, 2020, and assumes reinvestment of all dividends.

<div align='center'>Compensation Actually Paid (CAP) versus Company TSR versus Peer Group TSR</div>

| ¢ |     | CAP to CEO |     | ¢ |     | CAP to Other NEOs |     | TSR |     | Peer Group TSR |

#### 2026 Proxy Statement59
Named Executive Officer Compensation and Related Matters

The following graph compares the compensation actually paid to our CEO and the average of the compensation actually paid to our other NEOs with our net income.

<div align='center'>Compensation Actually Paid (CAP) versus Net Income</div>

| ¢ |     | CAP to CEO |     | ¢ |     | CAP to Other NEOs |     | Net Income (in millions) |

### Company’s Most Important Financial Performance Measures
The following are the most important financial performance measures (and non-financial performance measures), as determined by the Company, that link compensation actually paid to our NEOs to the Company’s performance or the most recently completed fiscal year.

#### •

#### Diluted Earnings Per Share
• Total Shareholder Return

• Relative Total Shareholder Return

#### 60Atmos Energy
| Proposal 4                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |     |                                                                                                                                                                                   |
| Approval of Amendment to the Articles of Incorporation to Increase the Number of Authorized Shares of Common Stock                                                                                                                                                                                                                                                                                                                                                                                                                                              
 The Board of Directors has unanimously approved, and recommends that shareholders approve, an amendment to our existing Restated Articles of Incorporation (the “Existing Articles”) to be contained in an Amended and Restated Certificate of Formation, in the case of Texas, or Restated Articles of Incorporation, in the case of Virginia (each such document being referred to as an “Amended and Restated Charter”) to increase the number of authorized shares of common stock from 200 million to 400 million (“Increase of Common Shares Amendment”). |     | The Board of Directors recommends that our shareholders voteFORthe approval of an Amendment to the Existing Articles to Increase the Number of Authorized Shares of Common Stock. |

Currently, the Company is authorized to issue 200 million common shares. As of September 30, 2025, approximately 162 million shares of common stock were issued, with approximately 34 million shares of common stock reserved