BERKSHIRE HATHAWAY ENERGY COSEC Filings
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All SEC filings by BERKSHIRE HATHAWAY ENERGY CO — annual and quarterly reports, current reports, registrations, proxies and ownership forms, updated in real time.
Financials
| 10-Q | Quarterly report | View Diff | Aug 7, 2026 | |
| 10-Q | Quarterly report | View Diff | May 1, 2026 | |
| 10-K | Annual report | View Diff | Feb 27, 2026 | |
| 10-Q | Quarterly report | View Diff | Oct 31, 2025 | |
| 10-Q | Quarterly report | View Diff | Aug 1, 2025 | |
| 10-Q | Quarterly report | View Diff | May 2, 2025 | |
| 10-K | Annual report | View Diff | Feb 21, 2025 | |
| 10-Q | Quarterly report | View Diff | Nov 1, 2024 | |
| 10-Q | Quarterly report | View Diff | Aug 2, 2024 | |
| 10-Q | Quarterly report | View Diff | May 6, 2024 |
Events
| 8-K | Other Events | Apr 10, 2026 | ||
| 8-K | Regulation Fd Disclosure | Mar 26, 2026 | ||
| 8-K | Regulation Fd Disclosure | Nov 7, 2025 | ||
| 8-K | Regulation Fd Disclosure | Mar 27, 2025 | ||
| 8-K | Unregistered Sales of Equity Securities | Dec 31, 2024 | ||
| 8-K | Regulation Fd Disclosure | Nov 8, 2024 | ||
| 8-K | Entry Into a Material Definitive Agreement | Sep 30, 2024 | ||
| 8-K | Regulation Fd Disclosure | Mar 26, 2024 | ||
| 8-K | Regulation Fd Disclosure | Nov 13, 2023 | ||
| 8-K | Berkshire Hathaway Energy Completes Acquisition of Additional Stake in Cove Point Lng | Sep 1, 2023 |
Registrations and Prospectuses
| S-8 | Registration of securities for employees | Jan 9, 2026 | ||
| S-8 | Registration of securities for employees | Dec 29, 2023 | ||
| 424B3 | Prospectus supplement | Jan 10, 2023 | ||
| S-4/A | Registration of securities issued in business combination transactions | View Diff | Jan 4, 2023 | |
| S-4/A | Registration of securities issued in business combination transactions | View Diff | Jan 3, 2023 | |
| S-4 | Registration of securities issued in business combination transactions | View Diff | Dec 22, 2022 | |
| 424B3 | Prospectus supplement | Feb 3, 2021 | ||
| S-4 | Registration of securities issued in business combination transactions | View Diff | Jan 22, 2021 | |
| 424B3 | Prospectus supplement | Dec 13, 2018 | ||
| S-4 | Registration of securities issued in business combination transactions | View Diff | Nov 30, 2018 |
Proxies
| DEFA14A | Additional proxy soliciting materials | Nov 14, 2008 | ||
| DEFA14A | Additional proxy soliciting materials | Nov 4, 2008 | ||
| DEFA14A | Additional proxy soliciting materials | Nov 4, 2008 | ||
| DEFA14A | Additional proxy soliciting materials | Oct 29, 2008 | ||
| DEFA14A | Additional proxy soliciting materials | Oct 20, 2008 | ||
| DEFA14A | Additional proxy soliciting materials | Jan 14, 2000 | ||
| DEFM14A | Proxy related to merger | Dec 27, 1999 | ||
| PREM14A | Preliminary proxy related to merger | View Diff | Dec 15, 1999 | |
| PREM14A | Preliminary proxy related to merger | Nov 12, 1999 | ||
| DEF 14A | Definitive proxy | Apr 19, 1999 |
Other
| SD | Conflict minerals disclosure | Sep 29, 2025 | ||
| EFFECT | Notice of effectiveness | Jan 12, 2023 | ||
| CORRESP | Correspondence with SEC | Jan 5, 2023 | ||
| UPLOAD | Letter from SEC | Dec 30, 2022 | ||
| CORRESP | Correspondence with SEC | Dec 22, 2022 | ||
| EFFECT | Notice of effectiveness | Feb 4, 2021 | ||
| CORRESP | Correspondence with SEC | Jan 29, 2021 | ||
| UPLOAD | Letter from SEC | Jan 29, 2021 | ||
| CORRESP | Correspondence with SEC | Jan 25, 2021 | ||
| EFFECT | Notice of effectiveness | Dec 13, 2018 |
Ownership
| SC 13D/A | Beneficial ownership report | Jun 1, 2009 | ||
| SC 13D/A | Beneficial ownership report | May 14, 2009 | ||
| SC 13D/A | Beneficial ownership report | Feb 9, 2009 | ||
| SC 13D/A | Beneficial ownership report | Jan 22, 2009 | ||
| SC 13D | Beneficial ownership report | Dec 29, 2008 | ||
| SC 13D/A | Beneficial ownership report | Aug 22, 2001 | ||
| 4/A | Change in insider ownership | May 3, 2000 | ||
| SC 13D | Beneficial ownership report | Apr 18, 2000 | ||
| 4 | Change in insider ownership | Apr 11, 2000 | ||
| SC 13G | Beneficial ownership report | Apr 10, 2000 |