# EDGAR Filing Document

**Accession Number:** 0001161728
**File Stem:** 0001161728-23-000023
**Filing Date:** 2023-3
**Character Count:** 1173
**Document Hash:** f8a7283bb9c1156a9038ef0f6e5fa8fe
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001161728-23-000023.hdr.sgml**: 20230329

**ACCESSION NUMBER**: 0001161728-23-000023

**CONFORMED SUBMISSION TYPE**: DEFA14A

**PUBLIC DOCUMENT COUNT**: 3

**FILED AS OF DATE**: 20230329

**DATE AS OF CHANGE**: 20230329

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** MGE ENERGY INC
- **CENTRAL INDEX KEY:** 0001161728
- **STANDARD INDUSTRIAL CLASSIFICATION:** ELECTRIC, GAS & SANITARY SERVICES [4900]
- **IRS NUMBER:** 392040501
- **STATE OF INCORPORATION:** WI
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** DEFA14A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 000-49965
- **FILM NUMBER:** 23772058

**BUSINESS ADDRESS:**
- **STREET 1:** 133 SOUTH BLAIR STREET
- **STREET 2:** P.O. BOX 1231
- **CITY:** MADISON
- **STATE:** WI
- **ZIP:** 53701-1231
- **BUSINESS PHONE:** (608) 252-7000

**MAIL ADDRESS:**
- **STREET 1:** 133 SOUTH BLAIR STREET
- **STREET 2:** P.O. BOX 1231
- **CITY:** MADISON
- **STATE:** WI
- **ZIP:** 53701-1231

**Additional information mailed to MGE Energy shareholders on or about March 29, 2023.**

![Picture 3](f20230329defa14anotice1.jpg)

------

![Picture 4](f20230329defa14anotice2.jpg)