MADISON GAS & ELECTRIC COSEC Filings
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All SEC filings by MADISON GAS & ELECTRIC CO — annual and quarterly reports, current reports, registrations, proxies and ownership forms, updated in real time.
Financials
| 10-Q | Quarterly report | View Diff | Aug 5, 2026 | |
| 10-Q | Quarterly report | View Diff | May 5, 2026 | |
| 10-K | Annual report | View Diff | Feb 27, 2026 | |
| 10-Q | Quarterly report | View Diff | Nov 5, 2025 | |
| 10-Q | Quarterly report | View Diff | Aug 6, 2025 | |
| 10-Q | Quarterly report | View Diff | May 7, 2025 | |
| 10-K | Annual report | View Diff | Feb 25, 2025 | |
| 10-Q | Quarterly report | View Diff | Nov 6, 2024 | |
| 10-Q | Quarterly report | View Diff | Aug 7, 2024 | |
| 10-Q | Quarterly report | View Diff | May 8, 2024 |
Events
| 8-K | Mge Energy Reports Second-Quarter 2026 Earnings | Aug 5, 2026 | ||
| 8-K | Current report | Jun 23, 2026 | ||
| 8-K | Regulation Fd Disclosure | May 8, 2026 | ||
| 8-K | Mge Energy Reports First-Quarter 2026 Earnings | May 5, 2026 | ||
| 8-K | Departure of Directors or Certain Officers | Apr 21, 2026 | ||
| 8-K | Regulation Fd Disclosure | Feb 27, 2026 | ||
| 8-K | Mge Energy Reports Fourth-Quarter and Full-Year 2025 Earnings | Feb 24, 2026 | ||
| 8-K | Termination of a Material Definitive Agreement | Jan 29, 2026 | ||
| 8-K | Entry Into a Material Definitive Agreement | Jan 27, 2026 | ||
| 8-K | Regulation Fd Disclosure | Nov 7, 2025 |
Registrations and Prospectuses
| S-3ASR | Automatic shelf registration | Feb 24, 2026 | ||
| S-3ASR | Automatic shelf registration | May 8, 2023 | ||
| S-8 | Registration of securities for employees | Dec 16, 2022 | ||
| S-3ASR | Automatic shelf registration | May 12, 2020 | ||
| S-3ASR | Automatic shelf registration | Jul 14, 2017 | ||
| S-3ASR | Automatic shelf registration | Jul 15, 2014 | ||
| 15-12G | Securities registration termination | Oct 26, 2012 | ||
| 8-A12G | Registration of securities | Oct 25, 2012 | ||
| S-3ASR | Automatic shelf registration | Aug 24, 2011 | ||
| S-3ASR | Automatic shelf registration | Dec 22, 2010 |
Proxies
| DEF 14A | Definitive proxy | Mar 29, 2023 | ||
| DEF 14A | Definitive proxy | View Diff | Apr 12, 2001 | |
| DEF 14A | Definitive proxy | View Diff | Mar 29, 2000 | |
| DEF 14A | Definitive proxy | View Diff | Mar 30, 1999 | |
| PRE 14A | Preliminary proxy | Mar 17, 1999 | ||
| DEF 14A | Definitive proxy | View Diff | Mar 23, 1998 | |
| DEF 14A | Definitive proxy | View Diff | Mar 21, 1997 | |
| DEF 14A | Definitive proxy | View Diff | Mar 27, 1996 | |
| PRE 14A | Preliminary proxy | Mar 12, 1996 | ||
| DEF 14A | Definitive proxy | View Diff | Mar 21, 1995 |
Other
| UPLOAD | Letter from SEC | Sep 23, 2022 | ||
| UPLOAD | Letter from SEC | Sep 7, 2022 | ||
| UPLOAD | Letter from SEC | Aug 18, 2016 | ||
| CORRESP | Correspondence with SEC | Aug 4, 2016 | ||
| UPLOAD | Letter from SEC | Jul 25, 2016 | ||
| UPLOAD | Letter from SEC | Nov 9, 2012 | ||
| CORRESP | Correspondence with SEC | Oct 25, 2012 | ||
| UPLOAD | Letter from SEC | Oct 11, 2012 | ||
| CORRESP | Correspondence with SEC | Sep 24, 2012 | ||
| UPLOAD | Letter from SEC | Sep 11, 2012 |
Ownership
| 4 | Change in insider ownership | Mar 3, 2011 | ||
| SC 13G/A | Beneficial ownership report | Feb 14, 2002 | ||
| SC 13G/A | Beneficial ownership report | Feb 12, 2002 | ||
| SC 13G/A | Beneficial ownership report | Feb 14, 2001 | ||
| SC 13G/A | Beneficial ownership report | Feb 14, 2000 | ||
| SC 13G/A | Beneficial ownership report | Feb 16, 1999 | ||
| SC 13G/A | Beneficial ownership report | Feb 13, 1998 | ||
| SC 13G | Beneficial ownership report | Feb 18, 1997 |