MGE Energy(MGEE) - 2021 Q3 - Quarterly Report

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 ...