MGEE

EX-99.1

2 mgee-ex99_1.htm

EX-99.1

EX-99.1

EXHIBIT 99.1

News

MGE Energy Reports Second-Quarter 2026 Earnings

Madison, Wis., August 05, 2026—MGE Energy, Inc. (Nasdaq: MGEE), today reported financial results for the second quarter of 2026.

MGE Energy's GAAP (Generally Accepted Accounting Principles) earnings for the second quarter of 2026 were $33.4 million, or $0.89 per share, compared to $26.5 million, or $0.72 per share, for the same period in the prior year.

Electric segment earnings increased $3.0 million for 2026 compared to 2025, reflecting strategic capital investments that grew rate base, largely driven by the successful deployment of key renewable energy projects. Gas net income remained stable compared to the second quarter of 2025. In addition, earnings benefited from approximately $3.9 million of investment gains, including returns from venture capital funds focused on technologies and innovations relevant to the evolving energy industry.

MGE Energy, Inc.

(In thousands, except per-share amounts)

(Unaudited)

Three Months Ended June 30,

2026

2025

Operating revenues

$

161,195

$

159,452

Operating income

$

32,634

$

34,223

Net income

$

33,353

$

26,498

Earnings per share - basic

$

0.89

$

0.73

Earnings per share - diluted

$

0.89

$

0.72

Weighted average shares outstanding - basic

37,351

36,540

Weighted average shares outstanding - diluted

37,456

36,569

Six Months Ended June 30,

2026

2025

Operating revenues

$

403,898

$

378,422

Operating income

$

85,786

$

87,088

Net income

$

81,834

$

68,090

Earnings per share - basic

$

2.21

$

1.86

Earnings per share - diluted

$

2.21

$

1.86

Weighted average shares outstanding - basic

36,972

36,526

Weighted average shares outstanding - diluted

37,029

36,557

1

About MGE Energy

MGE Energy is a public utility holding company. Its principal subsidiary, Madison Gas and Electric, generates and distributes electricity to 170,000 customers in Dane County, Wis., and purchases and distributes natural gas to 180,000 customers in seven south-central and western Wisconsin counties. MGE's roots in the Madison area date back more than 150 years.

Forward-looking Statements

This press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, as amended. Such forward-looking statements are based on MGE Energy's current expectations, estimates and assumptions regarding future events, which are inherently uncertain. We caution you not to place undue reliance on any forward-looking statements, which are made as of the date of this press release. We undertake no obligation to revise or update publicly any such forward-looking statements to reflect any change in expectations or in events, conditions or circumstances on which any such statements may be based. For a further description of the risks and uncertainties that could cause actual results to differ from those expressed in these forward-looking statements, as well as risks relating to our business in general, please refer to the “Risk Factors” sections in our Annual Report on Form 10-K for the year ended December 31, 2025, filed with the Securities and Exchange Commission.

Contact:

Steve B. Schultz

Media Relations

608-252-7219 | sbschultz@mge.com

Ken Frassetto

Investor Relations

608-252-4723 | kfrassetto@mge.com

2

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8-K

00000613390001161728falsefalse0001161728mgee:MgeMember2026-02-242026-02-2400011617282026-02-242026-02-24

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

February 24, 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 2.02. Results of Operations and Financial Condition.

On February 24, 2026, MGE Energy, Inc. (the Company) issued a press release announcing its fourth quarter and full year 2025 earnings. The Company is furnishing a copy of that press release as Exhibit 99.1 to this report.

This combined Form 8-K is being furnished separately by the Company and Madison Gas and Electric Company. Information contained herein relating to any individual registrant has been furnished by such registrant on its own behalf. Neither registrant makes any representation as to information relating to the other registrant.

Item 9.01. Financial Statements and Exhibits.

(a) Financial statements of businesses acquired: None (b) Pro forma financial information: None (c) Shell company transactions: None (d) Exhibits.

Exhibit No.

Description

99.1

Press release of MGE Energy, Inc., issued on February 24, 2026.

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: February 24, 2026

/s/ Jenny L. Lagerwall

Jenny L. Lagerwall Assistant Vice President - Accounting and Controller (Chief Accounting Officer)

3

8-K

00011617280000061339falsefalse00011617282025-11-052025-11-050001161728mgee:MgeMember2025-11-052025-11-05

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

November 5, 2025 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 2.02. Results of Operations and Financial Condition.

On November 5, 2025, MGE Energy, Inc. (the Company) issued a press release announcing its third quarter 2025 earnings. The Company is furnishing a copy of that press release as Exhibit 99.1 to this report.

This combined Form 8-K is being furnished separately by the Company and Madison Gas and Electric Company. Information contained herein relating to any individual registrant has been furnished by such registrant on its own behalf. Neither registrant makes any representation as to information relating to the other registrant.

Item 9.01. Financial Statements and Exhibits.

(a) Financial statements of businesses acquired: None (b) Pro forma financial information: None (c) Shell company transactions: None (d) Exhibits.

Exhibit No.

Description

99.1

Press release of MGE Energy, Inc., issued on November 5, 2025.

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: November 5, 2025

/s/ Jenny L. Lagerwall

Jenny L. Lagerwall Assistant Vice President - Accounting and Controller (Chief Accounting Officer)

3

8-K

false00011617280000061339false0001161728mgee:MgeMember2025-08-062025-08-0600011617282025-08-062025-08-06

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

August 6, 2025 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 2.02. Results of Operations and Financial Condition.

On August 6, 2025, MGE Energy, Inc. (the Company) issued a press release announcing its second quarter 2025 earnings. The Company is furnishing a copy of that press release as Exhibit 99.1 to this report.

This combined Form 8-K is being furnished separately by the Company and Madison Gas and Electric Company. Information contained herein relating to any individual registrant has been furnished by such registrant on its own behalf. Neither registrant makes any representation as to information relating to the other registrant.

Item 7.01. Regulation FD Disclosure.

On August 6, 2025, MGE Energy, Inc. posted a financial presentation on its Investor Relations website. A copy of the presentation is attached as Exhibit 99.2. This Form 8-K and the attached exhibits are furnished to, but not filed with, the Securities and Exchange Commission.

Item 9.01. Financial Statements and Exhibits.

(a) Financial statements of businesses acquired: None (b) Pro forma financial information: None (c) Shell company transactions: None (d) Exhibits.

Exhibit No.

Description

99.1

Press release of MGE Energy, Inc., issued on August 6, 2025.

99.2

Presentation Slides.

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: August 6, 2025

/s/ Jenny L. Lagerwall

Jenny L. Lagerwall Assistant Vice President - Accounting and Controller (Chief Accounting Officer)

3

8-K

0000061339falsefalse000116172800011617282025-05-072025-05-070001161728mgee:MgeMember2025-05-072025-05-07

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

May 7, 2025 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 2.02. Results of Operations and Financial Condition.

On May 7, 2025, MGE Energy, Inc. (the Company) issued a press release announcing its first quarter 2025 earnings. The Company is furnishing a copy of that press release as Exhibit 99.1 to this report.

This combined Form 8-K is being furnished separately by the Company and Madison Gas and Electric Company. Information contained herein relating to any individual registrant has been furnished by such registrant on its own behalf. Neither registrant makes any representation as to information relating to the other registrant.

Item 9.01. Financial Statements and Exhibits.

(a) Financial statements of businesses acquired: None (b) Pro forma financial information: None (c) Shell company transactions: None (d) Exhibits.

Exhibit No.

Description

99.1

Press release of MGE Energy, Inc., issued on May 7, 2025.

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: May 7, 2025

/s/ Jenny L. Lagerwall

Jenny L. Lagerwall Assistant Vice President - Accounting and Controller (Chief Accounting Officer)

3

8-K

false0001161728false000006133900011617282025-02-252025-02-250001161728mgee:MgeMember2025-02-252025-02-25

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

February 25, 2025 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 2.02. Results of Operations and Financial Condition.

On February 25, 2025, MGE Energy, Inc. (the Company) issued a press release announcing its fourth quarter and full year 2024 earnings. The Company is furnishing a copy of that press release as Exhibit 99.1 to this report.

This combined Form 8-K is being furnished separately by the Company and Madison Gas and Electric Company. Information contained herein relating to any individual registrant has been furnished by such registrant on its own behalf. Neither registrant makes any representation as to information relating to the other registrant.

Item 9.01. Financial Statements and Exhibits.

(a) Financial statements of businesses acquired: None

(b) Pro forma financial information: None

(c) Shell company transactions: None

(d) Exhibits.

Exhibit No.

Description

99.1

Press release of MGE Energy, Inc., issued on February 25, 2025.

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: February 25, 2025

/s/ Jenny L. Lagerwall

Jenny L. Lagerwall Assistant Vice President - Accounting and Controller (Chief Accounting Officer)

3

8-K

0001161728falsefalse00000613390001161728mgee:MgeMember2024-11-062024-11-0600011617282024-11-062024-11-06

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

November 6, 2024 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 2.02. Results of Operations and Financial Condition.

On November 6, 2024, MGE Energy, Inc. (the Company) issued a press release announcing its third quarter 2024 earnings. The Company is furnishing a copy of that press release as Exhibit 99.1 to this report.

This combined Form 8-K is being furnished separately by the Company and Madison Gas and Electric Company. Information contained herein relating to any individual registrant has been furnished by such registrant on its own behalf. Neither registrant makes any representation as to information relating to the other registrant.

Item 9.01. Financial Statements and Exhibits.

(a) Financial statements of businesses acquired: None

(b) Pro forma financial information: None

(c) Shell company transactions: None

(d) Exhibits.

Exhibit No.

Description

99.1

Press release of MGE Energy, Inc., issued on November 6, 2024.

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: November 6, 2024

/s/ Jenny L. Lagerwall

Jenny L. Lagerwall Assistant Vice President - Accounting and Controller (Chief Accounting Officer)

3

8-K

0001161728false0000061339false0001161728mgee:MgeMember2024-08-072024-08-0700011617282024-08-072024-08-07

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

August 7, 2024 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))

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 ☐

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

1

Item 2.02. Results of Operations and Financial Condition.

On August 7, 2024, MGE Energy, Inc. (the Company) issued a press release announcing its second quarter 2024 earnings. The Company is furnishing a copy of that press release as Exhibit 99.1 to this report.

This combined Form 8-K is being furnished separately by the Company and Madison Gas and Electric Company. Information contained herein relating to any individual registrant has been furnished by such registrant on its own behalf. Neither registrant makes any representation as to information relating to the other registrant.

Item 9.01. Financial Statements and Exhibits.

(a) Financial statements of businesses acquired: None

(b) Pro forma financial information: None

(c) Shell company transactions: None

(d) Exhibits.

Exhibit No.

Description

99.1

Press release of MGE Energy, Inc., issued on August 7, 2024.

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: August 7, 2024

/s/ Jenny L. Lagerwall

Jenny L. Lagerwall Assistant Vice President - Accounting and Controller (Chief Accounting Officer)

3

8-K

falsefalse000006133900011617280001161728mgee:MgeMember2024-05-082024-05-0800011617282024-05-082024-05-08

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

May 8, 2024 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))

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 ☐

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

1

Item 2.02. Results of Operations and Financial Condition.

On May 8, 2024, MGE Energy, Inc. (the Company) issued a press release announcing its first quarter 2024 earnings. The Company is furnishing a copy of that press release as Exhibit 99.1 to this report.

This combined Form 8-K is being furnished separately by the Company and Madison Gas and Electric Company. Information contained herein relating to any individual registrant has been furnished by such registrant on its own behalf. Neither registrant makes any representation as to information relating to the other registrant.

Item 9.01. Financial Statements and Exhibits.

(a) Financial statements of businesses acquired: None

(b) Pro forma financial information: None

(c) Shell company transactions: None

(d) Exhibits.

Exhibit No.

Description

99.1

Press release of MGE Energy, Inc., issued on May 8, 2024.

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: May 8, 2024

/s/ Tamara J. Johnson

Tamara J. Johnson Vice President - Chief Accounting Officer and Controller

3

8-K

false0001161728false000006133900011617282024-02-212024-02-210001161728mgee:MgeMember2024-02-212024-02-21

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

February 21, 2024 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))

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 ☐

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

1

Item 2.02. Results of Operations and Financial Condition.

On February 21, 2024, MGE Energy, Inc. (the Company) issued a press release announcing its fourth quarter and full year 2023 earnings. The Company is furnishing a copy of that press release as Exhibit 99.1 to this report.

This combined Form 8-K is being furnished separately by the Company and Madison Gas and Electric Company. Information contained herein relating to any individual registrant has been furnished by such registrant on its own behalf. Neither registrant makes any representation as to information relating to the other registrant.

Item 9.01. Financial Statements and Exhibits.

(a) Financial statements of businesses acquired: None

(b) Pro forma financial information: None

(c) Shell company transactions: None

(d) Exhibits.

Exhibit No.

Description

99.1

Press release of MGE Energy, Inc., issued on February 21, 2024.

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: February 21, 2024

/s/ Tamara J. Johnson

Tamara J. Johnson Vice President - Chief Accounting Officer and Controller

3

8-K

0001161728falsefalse00000613390001161728mgee:MgeMember2023-11-022023-11-0200011617282023-11-022023-11-02

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

November 2, 2023 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))

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 ☐

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

1

Item 2.02. Results of Operations and Financial Condition.

On November 2, 2023, MGE Energy, Inc. (the Company) issued a press release announcing its third quarter 2023 earnings. The Company is furnishing a copy of that press release as Exhibit 99.1 to this report.

This combined Form 8-K is being furnished separately by the Company and Madison Gas and Electric Company. Information contained herein relating to any individual registrant has been furnished by such registrant on its own behalf. Neither registrant makes any representation as to information relating to the other registrant.

Item 9.01. Financial Statements and Exhibits.

(a) Financial statements of businesses acquired: None

(b) Pro forma financial information: None

(c) Shell company transactions: None

(d) Exhibits.

Exhibit No.

Description

99.1

Press release of MGE Energy, Inc., issued on November 2, 2023.

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: November 2, 2023

/s/ Tamara J. Johnson

Tamara J. Johnson Vice President - Chief Accounting Officer and Controller

3

8-K

false00000613390001161728false00011617282023-08-032023-08-030001161728mgee:MgeMember2023-08-032023-08-03

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

August 3, 2023 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))

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 ☐

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

1

Item 2.02. Results of Operations and Financial Condition.

On August 3, 2023, MGE Energy, Inc. (the Company) issued a press release announcing its second quarter 2023 earnings. The Company is furnishing a copy of that press release as Exhibit 99.1 to this report.

This combined Form 8-K is being furnished separately by the Company and Madison Gas and Electric Company. Information contained herein relating to any individual registrant has been furnished by such registrant on its own behalf. Neither registrant makes any representation as to information relating to the other registrant.

Item 9.01. Financial Statements and Exhibits.

(a) Financial statements of businesses acquired: None

(b) Pro forma financial information: None

(c) Shell company transactions: None

(d) Exhibits.

Exhibit No.

Description

99.1

Press release of MGE Energy, Inc., issued on August 3, 2023.

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: August 3, 2023

/s/ Tamara J. Johnson

Tamara J. Johnson Vice President - Chief Accounting Officer and Controller

3

8-K

00011617280000061339falsefalse0001161728mgee:MgeMember2023-05-042023-05-0400011617282023-05-042023-05-04

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

May 4, 2023 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))

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 ☐

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

1

Item 2.02. Results of Operations and Financial Condition.

On May 4, 2023, MGE Energy, Inc. (the Company) issued a press release announcing its first quarter 2023 earnings. The Company is furnishing a copy of that press release as Exhibit 99.1 to this report.

This combined Form 8-K is being furnished separately by the Company and Madison Gas and Electric Company. Information contained herein relating to any individual registrant has been furnished by such registrant on its own behalf. Neither registrant makes any representation as to information relating to the other registrant.

Item 9.01. Financial Statements and Exhibits.

(a) Financial statements of businesses acquired: None

(b) Pro forma financial information: None

(c) Shell company transactions: None

(d) Exhibits.

Exhibit No.

Description

99.1

Press release of MGE Energy, Inc., issued on May 4, 2023.

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: May 4, 2023

/s/ Tamara J. Johnson

Tamara J. Johnson Vice President - Chief Accounting Officer and Controller

3

8-K

false0001161728false000006133900011617282023-02-222023-02-220001161728mgee:MgeMember2023-02-222023-02-22

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

February 22, 2023 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))

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 ☐

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

1

Item 2.02. Results of Operations and Financial Condition.

On February 22, 2023, MGE Energy, Inc. (the Company) issued a press release announcing its fourth quarter and full year 2022 earnings. The Company is furnishing a copy of that press release as Exhibit 99.1 to this report.

This combined Form 8-K is being furnished separately by the Company and Madison Gas and Electric Company. Information contained herein relating to any individual registrant has been furnished by such registrant on its own behalf. Neither registrant makes any representation as to information relating to the other registrant.

Item 9.01. Financial Statements and Exhibits.

(a) Financial statements of businesses acquired: None

(b) Pro forma financial information: None

(c) Shell company transactions: None

(d) Exhibits.

Exhibit No.

Description

99.1

Press release of MGE Energy, Inc., issued on February 22, 2023.

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: February 22, 2023

/s/ Tamara J. Johnson

Tamara J. Johnson Vice President - Accounting and Controller

3

8-K

false0000061339false00011617280001161728mgee:MgeMember2022-11-032022-11-0300011617282022-11-032022-11-03

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

November 3, 2022 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))

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 ☐

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

1

Item 2.02. Results of Operations and Financial Condition.

On November 3, 2022, MGE Energy, Inc. (the Company) issued a press release announcing its third quarter 2022 earnings. The Company is furnishing a copy of that press release as Exhibit 99.1 to this report.

This combined Form 8-K is being furnished separately by the Company and Madison Gas and Electric Company. Information contained herein relating to any individual registrant has been furnished by such registrant on its own behalf. Neither registrant makes any representation as to information relating to the other registrant.

Item 9.01. Financial Statements and Exhibits.

(a) Financial statements of businesses acquired: None

(b) Pro forma financial information: None

(c) Shell company transactions: None

(d) Exhibits.

Exhibit No.

Description

99.1

Press release of MGE Energy, Inc., issued on November 3, 2022.

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: November 3, 2022

/s/ Tamara J. Johnson

Tamara J. Johnson Vice President - Accounting and Controller

3

8-K

0000061339false0001161728false00011617282022-08-042022-08-040001161728mgee:MgeMember2022-08-042022-08-04

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

August 4, 2022 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))

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 ☐

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

1

Item 2.02. Results of Operations and Financial Condition.

On August 4, 2022, MGE Energy, Inc. (the Company) issued a press release announcing its second quarter 2022 earnings. The Company is furnishing a copy of that press release as Exhibit 99.1 to this report.

This combined Form 8-K is being furnished separately by the Company and Madison Gas and Electric Company. Information contained herein relating to any individual registrant has been furnished by such registrant on its own behalf. Neither registrant makes any representation as to information relating to the other registrant.

Item 9.01. Financial Statements and Exhibits.

(a) Financial statements of businesses acquired: None

(b) Pro forma financial information: None

(c) Shell company transactions: None

(d) Exhibits.

Exhibit No.

Description

99.1

Press release of MGE Energy, Inc., issued on August 4, 2022.

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: August 4, 2022

/s/ Tamara J. Johnson

Tamara J. Johnson Vice President - Accounting and Controller

3

8-K

00000613390001161728falsefalse0001161728mgee:MgeMember2022-05-052022-05-0500011617282022-05-052022-05-05

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

May 5, 2022 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))

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 ☐

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

1

Item 2.02. Results of Operations and Financial Condition.

On May 5, 2022, MGE Energy, Inc. (the Company) issued a press release announcing its first quarter 2022 earnings. The Company is furnishing a copy of that press release as Exhibit 99.1 to this report.

This combined Form 8-K is being furnished separately by the Company and Madison Gas and Electric Company. Information contained herein relating to any individual registrant has been furnished by such registrant on its own behalf. Neither registrant makes any representation as to information relating to the other registrant.

Item 9.01. Financial Statements and Exhibits.

(a) Financial statements of businesses acquired: None

(b) Pro forma financial information: None

(c) Shell company transactions: None

(d) Exhibits.

Exhibit No.

Description

99.1

Press release of MGE Energy, Inc., issued on May 5, 2022.

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: May 5, 2022

/s/ Tamara J. Johnson

Tamara J. Johnson Vice President - Accounting and Controller

3

8-K

00011617280000061339falsefalse00011617282022-02-232022-02-230001161728mgee:MgeMember2022-02-232022-02-23

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

February 23, 2022 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))

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 ☐

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

1

Item 2.02. Results of Operations and Financial Condition.

On February 23, 2022, MGE Energy, Inc. (the Company) issued a press release announcing its fourth quarter 2021 earnings. The Company is furnishing a copy of that press release as Exhibit 99.1 to this report.

This combined Form 8-K is being furnished separately by the Company and Madison Gas and Electric Company. Information contained herein relating to any individual registrant has been furnished by such registrant on its own behalf. Neither registrant makes any representation as to information relating to the other registrant.

Item 9.01. Financial Statements and Exhibits.

(a) Financial statements of businesses acquired: None

(b) Pro forma financial information: None

(c) Shell company transactions: None

(d) Exhibits.

Exhibit No.

Description

99.1

Press release of MGE Energy, Inc., issued on February 23, 2022.

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: February 23, 2022

/s/ Tamara J. Johnson

Tamara J. Johnson Vice President - Accounting and Controller

3

Form 8-KFALSE☐☐☐☐☐☐00011617280000061339

0001161728

2021-08-05 2021-08-05

0001161728

mgee:MgeMember

2021-08-05 2021-08-05

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

August 5, 2021 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))

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 ☐ 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

1

Item 2.02. Results of Operations and Financial Condition.

On August 5, 2021, MGE Energy, Inc. (the Company) issued a press release announcing its second quarter 2021 earnings. The Company is furnishing a copy of that press release as Exhibit 99.1 to this report.

This combined Form 8-K is being furnished separately by the Company and Madison Gas and Electric Company. Information contained herein relating to any individual registrant has been furnished by such registrant on its own behalf. Neither registrant makes any representation as to information relating to the other registrant.

Item 9.01. Financial Statements and Exhibits.

(a)Financial statements of businesses acquired: None (b)Pro forma financial information: None (c)Shell company transactions: None (d)Exhibits.

Exhibit No.

Description

99.1

Press release of MGE Energy, Inc., issued on August 5, 2021.

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: August 05, 2021 /s/ Tamara J. Johnson

Tamara J. Johnson Vice President - Accounting and Controller

3