Company: ATO
Filing Date: 2025-11-14
Form Type: 10-K
Source: 0000731802-25-000056
Chunk: 114

Company: ATMOS ENERGY CORP
Filing Date: 2025-11-14
Form: 10-K
Item: Item 8
Chunk 114
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 collecting the customer rate relief charges on October 1, 2023, and any such property collected is solely owned by the Finance Corporation and not available to pay creditors of Atmos Energy.

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Table of ContentsATMOS ENERGY CORPORATIONNOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

11.    Retirement and Postretirement Employee Benefit Plans

We have both funded and unfunded noncontributory defined benefit plans that together cover most of our employees. We also maintain a postretirement plan that provides health care benefits to retired employees. Finally, we sponsor a defined contribution plan that covers substantially all employees. These plans are discussed in further detail below.As a rate regulated entity, most of our net periodic pension and other postretirement benefits costs are recoverable through our rates over a period of up to 15 years. A portion of these costs are capitalized into our rate base or deferred as a regulatory asset or liability. The remaining costs are recorded as a component of operation and maintenance expense or other non-operating expense. Additionally, the amounts that have not yet been recognized in net periodic pension cost that have been recorded as regulatory assets or liabilities are as follows:Employee Pension PlanSupplementalExecutiveRetirement PlansPostretirementPlanTotal (In thousands)September 30, 2025Unrecognized prior service credit$— $— $(9,984)$(9,984)Unrecognized actuarial (gain) loss(179,351)17,661 (116,690)(278,380)$(179,351)$17,661 $(126,674)$(288,364)September 30, 2024Unrecognized prior service credit$— $— $(24,897)$(24,897)Unrecognized actuarial (gain) loss(126,989)16,136 (111,500)(222,353)$(126,989)$16,136 $(136,397)$(247,250)Defined Benefit PlansEmployee Pension PlanAs of September 30, 2025, we maintained one cash balance defined benefit plan, the Atmos Energy Corporation Pension Account Plan (the Pension Plan). The Pension Plan was established effective January 1999 and covers most of the employees of Atmos Energy that were hired on or before September 30, 2010. Effective October 1, 2010, the Pension Plan was closed to new participants. The assets of the Pension Plan are held within the Atmos Energy Corporation Master