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Form 8-K

sec.gov

8-K — MGE ENERGY INC

Accession: 0001193125-26-167047

Filed: 2026-04-21

Period: 2026-04-17

CIK: 0001161728

SIC: 4900 (ELECTRIC, GAS & SANITARY SERVICES)

Item: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Item: Financial Statements and Exhibits

Documents

8-K — mgee-20260417.htm (Primary)

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934

April 17, 2026

Date of report (date of earliest event reported)

Commission

File No.

Name of Registrant, State of Incorporation, Address

of Principal Executive Offices, and Telephone No.

IRS Employer

Identification No.

000-49965

MGE Energy, Inc.

(a Wisconsin Corporation)

133 South Blair Street

Madison, Wisconsin 53788

(608) 252-7000 | mgeenergy.com

39-2040501

000-1125

Madison Gas and Electric Company

(a Wisconsin Corporation)

133 South Blair Street

Madison, Wisconsin 53788

(608) 252-7000 | mge.com

39-0444025

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class

Trading symbol(s)

Name of each exchange on which registered

Common Stock, $1 Par Value Per Share

MGEE

The NASDAQ Stock Market

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

MGE Energy, Inc. ☐ Madison Gas and Electric Company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.

MGE Energy, Inc. ☐ Madison Gas and Electric Company ☐

1

Item 5.02. Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

On April 17, 2026, the Boards of Directors of MGE Energy, Inc. (“MGE Energy”) and Madison Gas and Electric Company (“MGE”) promoted Jared Bushek, the Vice President – Chief Financial Officer and Treasurer of both MGE Energy and MGE, to the position of Executive Vice President – Chief Financial Officer and Treasurer of both MGE Energy and MGE, effective as of May 1, 2026. In connection with his promotion, Mr. Bushek was granted a one-time retention award in the form of restricted stock units under MGE Energy’s 2021 Long-Term Incentive Plan with respect to 25,000 shares of MGE Energy’s common stock. To support retention of Mr. Bushek, the retention award is scheduled to cliff vest on the fifth anniversary of the grant date, subject to Mr. Bushek’s continued employment through such date, subject to earlier vesting in the event of Mr. Bushek’s death, disability or termination without cause or resignation for good reason within 24 months following a change in control of MGE Energy.

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits.

Exhibit No.

Description

104

Cover Page Interactive Data File (the cover page XBRL tags are embedded in the Inline XBRL document).

2

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrants have duly caused this report to be signed on their behalf by the undersigned hereunto duly authorized.

MGE Energy, Inc.

Madison Gas and Electric Company

(Registrants)

Date: April 21, 2026

/s/ Jenny L. Lagerwall

Jenny L. Lagerwall

Assistant Vice President - Accounting and Controller

(Chief Accounting Officer)

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