United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the quarterly period ended: September 30, 2023 ☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the transition period from _______________ to _______________ | Commission Name of Registrant, State of Incorporation, Address IRS Employer | | --- | | File No. of Principal Executive Offices, a ...

☒ Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the quarterly period ended: United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q June 30, 2023 ☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the transition period from _______________ to _______________ | Commission Name of Registrant, State of Incorporation, Address | IRS Employer | | --- | --- | | File No. of Principal Executive Offices ...

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 ☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the transition period from _______________ to _______________ | Commission Name of Registrant, State of Incorporation, Address IRS Employer | | | --- | --- | | File No. of Principal Executive Offices, and Telephone No. Identification No. | | | 000-49965 39-2040501 MGE | Energy, Inc. | | (a Wisconsin Corporation) | | | 133 South Blair Street | ...

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ Annual Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the fiscal year ended: December 31, 2022 ☐ Transition report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the transition period from _______________ to _______________ | Commission Name of Registrant, State of Incorporation, Address | IRS Employer | | --- | --- | | File No. of Principal Executive Offices, an ...

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the quarterly period ended: September 30, 2022 ☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 | For the transition period from _______________ to _______________ | | | | | --- | --- | --- | --- | | Commission Name of Registrant, State of Incorporation, Address | | | IRS Employer | | File No. ...

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the quarterly period ended: June 30, 2022 ☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the transition period from _______________ to _______________ | Commission | Name of Registrant, State of Incorporation, Address | | | IRS Employer | | --- | --- | --- | --- | --- | | File No. | of P ...

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the quarterly period ended: March 31, 2022 ☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 | For the transition period from _______________ to _______________ | | | | | | | --- | --- | --- | --- | --- | --- | | Commission Name of Registrant, State of Incorporation, Address | | | | | IRS Emplo ...

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ Annual Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the fiscal year ended: December 31, 2021 MGE Energy, Inc. Yes ☒ No ☐ Madison Gas and Electric Company Yes ☒ No ☐ Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. See the definitions of "large accelerated fi ...

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the quarterly period ended: September 30, 2021 ☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the transition period from _______________ to _______________ | Commission | Name of Registrant, State of Incorporation, Address | IRS Employer | | --- | --- | --- | | File No. | of Principal Ex ...

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the quarterly period ended: June 30, 2021 ☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the transition period from _______________ to _______________ Name of Registrant, State of Incorporation, Address of Principal Executive Offices, and Telephone No. IRS Employer Identification No. 39- ...