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MADISON GAS & ELECTRIC CO

For the period ended Sep 30, 2025. Filed Nov 5, 2025.

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About this filing

A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Sep 30, 2025 · Filed Nov 5, 2025

MGEE$79.72-0.6%Stored close · as of Nov 10, 2026

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Contents

5. Pension and Other Postretirement Plans

on and Other Postretirement Plans - MGE Energy and MGE.

MGE maintains qualified and nonqualified pension plans, health care, and life insurance benefits and defined contribution 401(k) benefit plans for its employees and retirees.

The components of net periodic benefit cost, other than the service cost component, are recorded in "Other income, net" on the consolidated statements of income. The service cost component is recorded in "Other operations and maintenance" on the consolidated statements of income. MGE has regulatory treatment and recognizes regulatory assets or liabilities for timing differences between when net periodic benefit costs are recovered and when costs are recognized.

The following table presents the components of net periodic benefit costs recognized.

Three Months Ended · Nine Months Ended
September 30,September 30,
(In thousands)2025202420252024
Pension Benefits
Components of net periodic benefit cost:
Service cost$653$769$1,959$2,308
Interest cost4,2854,28012,85412,839
Expected return on assets(7,254)(7,149)(21,761)(21,448)
Amortization of:
Actuarial loss75215225644
Net periodic benefit (credit) cost$(2,241)$(1,885)$(6,723)$(5,657)
Postretirement Benefits
Components of net periodic benefit cost:
Service cost$186$214$557$642
Interest cost7577782,2712,354
Expected return on assets(678)(675)(2,036)(2,059)
Settlement cost—288—288
Amortization of:
Transition obligation1122
Prior service credit—(234)—(242)
Actuarial loss (gain)(161)774(482)568
Net periodic benefit cost$105$1,146$312$1,553

As approved by the PSCW, MGE is allowed to defer differences between actual employee benefit plan costs and costs reflected in current rates. The deferred costs may be recovered or refunded in MGE's next rate filing. For the three months ended September 30, 2025, MGE did not recover any previously deferred pension and other postretirement costs. For the nine months ended September 30, 2025, MGE recovered $0.7 million. During the three and nine months ended September 30, 2024, MGE recovered $0.5 million and $3.1 million, respectively. These costs have not been reflected in the table above.

Equity and Fi

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The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.