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

Company: ATMOS ENERGY CORP
Filing Date: 2025-06-26
Form: 11-K
Chunk 11
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41,655,458 |     | n/a                  |     | Daily                                        |     | 12 months                |

<div align='center'>9</div>

### ATMOS ENERGY CORPORATION RETIREMENT

### SAVINGS PLAN AND TRUST

### NOTES TO FINANCIAL STATEMENTS
<div align='center'>(continued)</div>

5. Related Party and Party-in-Interest Transactions

Certain Plan investments in registered investment companies and a common/collective trust fund are managed by T. Rowe Price. T. Rowe Price is the custodian and recordkeeper; therefore, these transactions qualify as party-in-interest transactions. Additionally, certain Plan participants have invested in Atmos Energy common stock. Because the Company is the Plan Sponsor, transactions involving Atmos Energy common stock qualify as party-in-interest and related party transactions. The Plan also issues loans to participants. All of these party-in-interest transactions are exempt from the prohibited transaction rules. At December 31, 2024 and 2023, participant accounts held 1,852,747 and 2,065,814 shares of Atmos Energy common stock and received $6,396,984 in dividends from Atmos Energy common stock during 2024. All other transactions which may be considered party-in-interest transactions relate to normal plan management and administrative services and the related payment of fees.

At December 31, 2024 and 2023, the percentage of the Plan’s investments held in the Company’s common stock was 23.1% and 24.0%.

#### 6. Income Tax Status
The Plan has received a determination letter from the IRS dated August 20, 2014 stating that the Plan is qualified under Section 401(a) of the Code; therefore, the related trust is exempt from taxation. Subsequent to this determination by the IRS, the Plan was amended. Once qualified, the Plan is required to operate in conformity with the Code to maintain its qualification. The Plan administrator believes the Plan is being operated in compliance with the applicable requirements of the Code and therefore believes that the Plan, as amended, is qualified and the related trust is tax-exempt.

#### 7. Risks and Uncertainties
The Plan invests in various investment securities. Investment securities are exposed to various risks such as interest rate, market and credit risks. Due to the level of risk associated with certain investment securities, it is at least reasonably possible that changes in the values of investment securities will occur in the near term and that such changes could materially affect Participant account balances and the