DAYTON POWER & LIGHT COSEC Filings
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All SEC filings by DAYTON POWER & LIGHT CO — annual and quarterly reports, current reports, registrations, proxies and ownership forms, updated in real time.
Financials
| 10-Q | Quarterly report | View Diff | Aug 4, 2026 | |
| 10-Q | Quarterly report | View Diff | May 5, 2026 | |
| 10-K/A | Annual report | View Diff | Apr 30, 2026 | |
| 10-K | Annual report | View Diff | Mar 2, 2026 | |
| 10-Q | Quarterly report | View Diff | Nov 4, 2025 | |
| 10-Q | Quarterly report | View Diff | Aug 1, 2025 | |
| 10-Q | Quarterly report | View Diff | May 1, 2025 | |
| 10-K | Annual report | View Diff | Mar 4, 2025 | |
| 10-Q | Quarterly report | View Diff | Oct 31, 2024 | |
| 10-Q | Quarterly report | View Diff | Aug 1, 2024 |
Events
| 8-K | Current report | Jul 27, 2026 | ||
| 8-K | Current report | Jul 21, 2026 | ||
| 8-K | Current report | Jul 15, 2026 | ||
| 8-K | Departure of Directors or Certain Officers | Apr 16, 2026 | ||
| 8-K | Entry Into a Material Definitive Agreement | Mar 19, 2026 | ||
| 8-K | Other Events | Nov 5, 2025 | ||
| 8-K | Departure of Directors or Certain Officers | Oct 16, 2025 | ||
| 8-K | Entry Into a Material Definitive Agreement | Aug 19, 2025 | ||
| 8-K | Other Events | Aug 14, 2025 | ||
| 8-K | Entry Into a Material Definitive Agreement | Aug 13, 2025 |
Registrations and Prospectuses
| 424B3 | Prospectus supplement | Dec 15, 2025 | ||
| S-4 | Registration of securities issued in business combination transactions | Dec 5, 2025 | ||
| 424B3 | Prospectus supplement | Mar 13, 2020 | ||
| S-4/A | Registration of securities issued in business combination transactions | View Diff | Mar 6, 2020 | |
| S-4 | Registration of securities issued in business combination transactions | Nov 8, 2019 | ||
| 424B3 | Prospectus supplement | Jun 16, 2014 | ||
| S-4/A | Registration of securities issued in business combination transactions | View Diff | Jun 11, 2014 | |
| S-4/A | Registration of securities issued in business combination transactions | View Diff | Jun 5, 2014 | |
| S-4 | Registration of securities issued in business combination transactions | Apr 16, 2014 | ||
| 424B3 | Prospectus supplement | May 25, 2005 |
Proxies
No results found.
Other
| EFFECT | Notice of effectiveness | Dec 15, 2025 | ||
| EFFECT | Notice of effectiveness | Mar 13, 2020 | ||
| CORRESP | Correspondence with SEC | Mar 12, 2020 | ||
| UPLOAD | Letter from SEC | Nov 20, 2019 | ||
| CORRESP | Correspondence with SEC | Nov 8, 2019 | ||
| UPLOAD | Letter from SEC | Aug 7, 2019 | ||
| CORRESP | Correspondence with SEC | Jul 25, 2019 | ||
| UPLOAD | Letter from SEC | Jul 12, 2019 | ||
| UPLOAD | Letter from SEC | Mar 18, 2016 | ||
| CORRESP | Correspondence with SEC | Mar 16, 2016 |
Ownership
| 11-K | Annual report of employee stock purchases | Jun 28, 2006 | ||
| 11-K | Annual report of employee stock purchases | Jun 28, 2006 | ||
| 11-K | Annual report of employee stock purchases | Jun 29, 2005 | ||
| 11-K | Annual report of employee stock purchases | Jun 29, 2005 | ||
| SC 13G/A | Beneficial ownership report | Feb 9, 1995 | ||
| SC 13G | Beneficial ownership report | Feb 9, 1994 |