MGE Energy Inc.

MGEE·NASDAQ·$76.00Share Price as of 11/2·$3BMarket Cap as of 11/2

Financials

10-QQ2 ended 06/30/2608/05/26 10-QQ1 ended 03/31/2605/05/26 10-KFY 202502/24/26 10-QQ3 ended 09/30/2511/05/25 10-QQ2 ended 06/30/2508/06/25

Disclosures

8-KCurrent report10/05/26 8-KCurrent report08/21/26 8-KCurrent report08/05/26 8-KCurrent report06/23/26 8-KCurrent report05/22/26

Prospectuses and Registrations

424B5Prospectus supplement05/07/26 424B5Prospectus supplement05/06/26 424B5Prospectus supplement02/24/26 S-3ASRAutomatic shelf registration02/24/26 S-3ASRAutomatic shelf registration05/08/23

Proxies

DEFA14AAdditional proxy materials04/23/26 DEF 14ADefinitive proxy04/02/26 DEFA14AAdditional proxy materials04/02/26 DEFA14AAdditional proxy materials04/02/26 DEFA14AAdditional proxy materials04/21/25

Ownership

Form 4Insider transaction09/11/26 Form 4Insider transaction08/20/26 SC 13GBeneficial ownership04/30/26 SC 13GBeneficial ownership04/29/26 Form 4Insider transaction04/21/26

Other

ARSAnnual report to shareholders04/02/26 ARSAnnual report to shareholders04/04/25 ARSAnnual report to shareholders04/05/24 ARSAnnual report to shareholders03/29/23 UPLOADLetter from the SEC09/23/22