MGEE · MGE Energy, Inc.

Summary

On February 27, 2026, MGE Energy, Inc. posted a financial presentation on its Investor Relations website, furnished as Exhibit 99.1 under Item 7.01 Regulation FD Disclosure. This Form 8-K and exhibits are furnished to, but not filed with, the SEC.

Key takeaways

• Financial presentation posted on Investor Relations website on February 27, 2026
• Presentation attached as Exhibit 99.1
• Disclosure under Item 7.01 Regulation FD
• Furnished, not filed, with the SEC