Northwest Natural Holding Co SEC filings NWN
Northwest Natural Holding Co has 651 filings in SEC EDGAR's recent list, going back to Mar 9, 2018. Its latest annual report, Form ARS, was filed on Apr 17, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 5, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Nov 5, 2026 (results of operations). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 4 | Insider transaction | Oct 21, 2026 | Oct 19, 2026 |
| 144 | Notice of proposed sale | Oct 19, 2026 | — |
| 4 | Insider transaction | Oct 2, 2026 | Oct 1, 2026 |
| 4 | Insider transaction | Sep 21, 2026 | Sep 18, 2026 |
| 4 | Insider transaction | Sep 3, 2026 | Sep 1, 2026 |
| 4 | Insider transaction | Sep 3, 2026 | Sep 1, 2026 |
| 4 | Insider transaction | Aug 18, 2026 | Aug 18, 2026 |
| 4 | Insider transaction | Aug 7, 2026 | Aug 6, 2026 |
| 4 | Insider transaction | Aug 7, 2026 | Aug 6, 2026 |
| 4 | Insider transaction | Aug 7, 2026 | Aug 6, 2026 |
| 4 | Insider transaction | Jul 21, 2026 | Jul 20, 2026 |
| 4 | Insider transaction | Jun 29, 2026 | Jun 26, 2026 |
| 144 | Notice of proposed sale | Jun 26, 2026 | — |
| 4 | Insider transaction | May 29, 2026 | May 28, 2026 |
| 4 | Insider transaction | May 29, 2026 | May 28, 2026 |
| 4 | Insider transaction | May 29, 2026 | May 28, 2026 |
| 4 | Insider transaction | May 29, 2026 | May 28, 2026 |
| 4 | Insider transaction | May 29, 2026 | May 28, 2026 |
| 4 | Insider transaction | May 13, 2026 | May 12, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | May 12, 2026 | — |
| 4 | Insider transaction | May 11, 2026 | May 7, 2026 |
| 4 | Insider transaction | May 11, 2026 | May 7, 2026 |
| 4 | Insider transaction | May 11, 2026 | May 7, 2026 |
| 4 | Insider transaction | May 11, 2026 | May 7, 2026 |
| 4 | Insider transaction | May 7, 2026 | May 7, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Apr 30, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Apr 29, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Apr 24, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 27, 2026 | — |
| 4 | Insider transaction | Mar 25, 2026 | Mar 23, 2026 |
| 144 | Notice of proposed sale | Mar 23, 2026 | — |
| 144 | Notice of proposed sale | Mar 23, 2026 | — |
| 4 | Insider transaction | Mar 9, 2026 | Mar 5, 2026 |
| 4 | Insider transaction | Mar 9, 2026 | Mar 5, 2026 |
| 4 | Insider transaction | Mar 9, 2026 | Mar 5, 2026 |
| 4 | Insider transaction | Mar 9, 2026 | Mar 5, 2026 |
| 4 | Insider transaction | Mar 9, 2026 | Mar 5, 2026 |
| 4 | Insider transaction | Mar 9, 2026 | Mar 5, 2026 |
| 4 | Insider transaction | Mar 9, 2026 | Mar 5, 2026 |
| 4 | Insider transaction | Mar 9, 2026 | Mar 5, 2026 |
| 4 | Insider transaction | Mar 9, 2026 | Mar 5, 2026 |
| 4 | Insider transaction | Mar 9, 2026 | Mar 5, 2026 |
| 4 | Insider transaction | Mar 9, 2026 | Mar 5, 2026 |
| 4 | Insider transaction | Mar 9, 2026 | Mar 5, 2026 |
| 4 | Insider transaction | Mar 9, 2026 | Mar 5, 2026 |
| 4 | Insider transaction | Mar 4, 2026 | Mar 2, 2026 |
| 4 | Insider transaction | Mar 4, 2026 | Mar 2, 2026 |
| 4 | Insider transaction | Mar 4, 2026 | Mar 2, 2026 |
| 4 | Insider transaction | Mar 4, 2026 | Mar 2, 2026 |
| 4 | Insider transaction | Feb 27, 2026 | Feb 25, 2026 |
| 4 | Insider transaction | Feb 27, 2026 | Feb 25, 2026 |
| 4 | Insider transaction | Feb 27, 2026 | Feb 25, 2026 |
| 4 | Insider transaction | Feb 27, 2026 | Feb 25, 2026 |
| 4 | Insider transaction | Feb 27, 2026 | Feb 25, 2026 |
| 4 | Insider transaction | Feb 27, 2026 | Feb 25, 2026 |
| 4 | Insider transaction | Feb 27, 2026 | Feb 25, 2026 |
| 4 | Insider transaction | Feb 27, 2026 | Feb 25, 2026 |
| 4 | Insider transaction | Feb 27, 2026 | Feb 25, 2026 |
| 4 | Insider transaction | Feb 27, 2026 | Feb 25, 2026 |
| 4 | Insider transaction | Feb 27, 2026 | Feb 25, 2026 |
| 4 | Insider transaction | Feb 27, 2026 | Feb 25, 2026 |
| 4 | Insider transaction | Feb 27, 2026 | Feb 25, 2026 |
| 4 | Insider transaction | Jan 20, 2026 | Jan 15, 2026 |
| 4 | Insider transaction | Dec 23, 2025 | Dec 22, 2025 |
| 4 | Insider transaction | Nov 18, 2025 | Nov 17, 2025 |
| 4 | Insider transaction | Nov 10, 2025 | Nov 6, 2025 |
| 4 | Insider transaction | Nov 10, 2025 | Nov 6, 2025 |
| 4 | Insider transaction | Nov 10, 2025 | Nov 6, 2025 |
| 4 | Insider transaction | Nov 10, 2025 | Nov 6, 2025 |
| 4 | Insider transaction | Oct 22, 2025 | Oct 20, 2025 |
| 144 | Notice of proposed sale | Oct 20, 2025 | — |
| 4 | Insider transaction | Oct 16, 2025 | Oct 15, 2025 |
| 4 | Insider transaction | Oct 14, 2025 | Oct 10, 2025 |
| 4 | Insider transaction | Oct 2, 2025 | Oct 1, 2025 |
| 4 | Insider transaction | Oct 2, 2025 | Oct 1, 2025 |
| 4 | Insider transaction | Oct 2, 2025 | Sep 30, 2025 |
| 4 | Insider transaction | Sep 19, 2025 | Sep 18, 2025 |
| 3 | Initial insider ownership | Sep 15, 2025 | Sep 8, 2025 |
| 4 | Insider transaction | Sep 4, 2025 | Sep 2, 2025 |
| 4 | Insider transaction | Sep 4, 2025 | Sep 2, 2025 |
| 4 | Insider transaction | Aug 20, 2025 | Aug 19, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Aug 11, 2025 | — |
| 4 | Insider transaction | Aug 7, 2025 | Aug 6, 2025 |
| 4 | Insider transaction | Aug 7, 2025 | Aug 6, 2025 |
| 4 | Insider transaction | Aug 7, 2025 | Aug 6, 2025 |
| 4 | Insider transaction | Jul 22, 2025 | Jul 21, 2025 |
| 144 | Notice of proposed sale | Jul 21, 2025 | — |
| 3 | Initial insider ownership | Jul 18, 2025 | Jul 12, 2025 |
| 4 | Insider transaction | Jun 24, 2025 | Jun 20, 2025 |
| 4 | Insider transaction | May 23, 2025 | May 21, 2025 |
| 4 | Insider transaction | May 9, 2025 | May 7, 2025 |
| 4 | Insider transaction | May 9, 2025 | May 7, 2025 |
| 4 | Insider transaction | May 9, 2025 | May 7, 2025 |
| 4 | Insider transaction | May 9, 2025 | May 7, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Apr 30, 2025 | — |
| 4 | Insider transaction | Apr 23, 2025 | Apr 21, 2025 |
| 4 | Insider transaction | Apr 1, 2025 | Mar 31, 2025 |
| 144 | Notice of proposed sale | Mar 31, 2025 | — |
| 4 | Insider transaction | Mar 26, 2025 | Mar 24, 2025 |
| 4/A | Filing | Mar 26, 2025 | Feb 26, 2025 |
| 144 | Notice of proposed sale | Mar 24, 2025 | — |
| 4 | Insider transaction | Mar 7, 2025 | Mar 5, 2025 |
| 4 | Insider transaction | Mar 7, 2025 | Mar 5, 2025 |
| 4 | Insider transaction | Mar 7, 2025 | Mar 5, 2025 |
| 4 | Insider transaction | Mar 7, 2025 | Mar 5, 2025 |
| 4 | Insider transaction | Mar 7, 2025 | Mar 5, 2025 |
| 4 | Insider transaction | Mar 7, 2025 | Mar 5, 2025 |
| 4 | Insider transaction | Mar 7, 2025 | Mar 5, 2025 |
| 4 | Insider transaction | Mar 7, 2025 | Mar 5, 2025 |
| 4 | Insider transaction | Mar 7, 2025 | Mar 5, 2025 |
| 4 | Insider transaction | Mar 7, 2025 | Mar 5, 2025 |
| 4 | Insider transaction | Mar 5, 2025 | Mar 3, 2025 |
| 4 | Insider transaction | Mar 4, 2025 | Mar 3, 2025 |
| 4 | Insider transaction | Mar 4, 2025 | Mar 3, 2025 |
| 4 | Insider transaction | Mar 4, 2025 | Mar 3, 2025 |
| 4 | Insider transaction | Mar 4, 2025 | Mar 3, 2025 |
| 4 | Insider transaction | Mar 3, 2025 | Mar 1, 2025 |
| 3 | Initial insider ownership | Mar 3, 2025 | Feb 24, 2025 |
| 4 | Insider transaction | Feb 28, 2025 | Feb 26, 2025 |
| 4 | Insider transaction | Feb 28, 2025 | Feb 26, 2025 |
| 4 | Insider transaction | Feb 28, 2025 | Feb 26, 2025 |
| 4 | Insider transaction | Feb 28, 2025 | Feb 26, 2025 |
| 4 | Insider transaction | Feb 28, 2025 | Feb 26, 2025 |
| 4 | Insider transaction | Feb 28, 2025 | Feb 26, 2025 |
| 4 | Insider transaction | Feb 28, 2025 | Feb 26, 2025 |
| 4 | Insider transaction | Feb 28, 2025 | Feb 26, 2025 |
| 4 | Insider transaction | Feb 28, 2025 | Feb 26, 2025 |
| 4 | Insider transaction | Feb 28, 2025 | Feb 26, 2025 |
| 4 | Insider transaction | Feb 26, 2025 | Feb 24, 2025 |
| 4 | Insider transaction | Feb 24, 2025 | Feb 20, 2025 |
| 4 | Insider transaction | Jan 23, 2025 | Jan 21, 2025 |
| 4 | Insider transaction | Jan 21, 2025 | Jan 16, 2025 |
| 4 | Insider transaction | Dec 23, 2024 | Dec 20, 2024 |
| 144 | Notice of proposed sale | Dec 20, 2024 | — |
| 4 | Insider transaction | Nov 22, 2024 | Nov 20, 2024 |
| 4 | Insider transaction | Nov 22, 2024 | Nov 20, 2024 |
| 4 | Insider transaction | Nov 22, 2024 | Nov 20, 2024 |
| 4 | Insider transaction | Nov 22, 2024 | Nov 20, 2024 |
| 4 | Insider transaction | Oct 1, 2024 | Oct 1, 2024 |
| 3 | Initial insider ownership | Sep 27, 2024 | Sep 23, 2024 |
| 4 | Insider transaction | Sep 4, 2024 | Sep 1, 2024 |
| 4 | Insider transaction | Sep 4, 2024 | Sep 1, 2024 |
| 3 | Initial insider ownership | Sep 4, 2024 | Aug 31, 2024 |
| 3 | Initial insider ownership | Aug 22, 2024 | Aug 19, 2024 |
| 4 | Insider transaction | Aug 7, 2024 | Aug 5, 2024 |
| 4 | Insider transaction | Aug 7, 2024 | Aug 5, 2024 |
| 4 | Insider transaction | Aug 7, 2024 | Aug 5, 2024 |
| 4 | Insider transaction | May 9, 2024 | May 7, 2024 |
| 4 | Insider transaction | May 9, 2024 | May 7, 2024 |
| 4 | Insider transaction | May 9, 2024 | May 7, 2024 |
| 4 | Insider transaction | Mar 15, 2024 | Mar 13, 2024 |
| 4 | Insider transaction | Mar 5, 2024 | Mar 1, 2024 |
| 4 | Insider transaction | Mar 5, 2024 | Mar 1, 2024 |
| 4 | Insider transaction | Mar 5, 2024 | Mar 1, 2024 |
| 4 | Insider transaction | Mar 5, 2024 | Mar 1, 2024 |
| 4 | Insider transaction | Mar 5, 2024 | Mar 1, 2024 |
| 4 | Insider transaction | Mar 5, 2024 | Mar 1, 2024 |
| 4 | Insider transaction | Mar 5, 2024 | Mar 1, 2024 |
| 4 | Insider transaction | Mar 5, 2024 | Mar 1, 2024 |
| 4 | Insider transaction | Mar 5, 2024 | Mar 1, 2024 |
| 4 | Insider transaction | Mar 5, 2024 | Mar 1, 2024 |
| 4 | Insider transaction | Mar 5, 2024 | Mar 1, 2024 |
| 4 | Insider transaction | Mar 5, 2024 | Mar 1, 2024 |
| 4 | Insider transaction | Feb 28, 2024 | Feb 26, 2024 |
| 4 | Insider transaction | Feb 28, 2024 | Feb 26, 2024 |
| 4 | Insider transaction | Feb 28, 2024 | Feb 26, 2024 |
| 4 | Insider transaction | Feb 23, 2024 | Feb 21, 2024 |
| 4 | Insider transaction | Feb 23, 2024 | Feb 21, 2024 |
| 4 | Insider transaction | Feb 23, 2024 | Feb 21, 2024 |
| 4 | Insider transaction | Feb 23, 2024 | Feb 21, 2024 |
| 4 | Insider transaction | Feb 23, 2024 | Feb 21, 2024 |
| 4 | Insider transaction | Feb 23, 2024 | Feb 21, 2024 |
| 4 | Insider transaction | Feb 23, 2024 | Feb 21, 2024 |
| 4 | Insider transaction | Feb 23, 2024 | Feb 21, 2024 |
| 4 | Insider transaction | Feb 23, 2024 | Feb 21, 2024 |
| 4 | Insider transaction | Feb 23, 2024 | Feb 21, 2024 |
| 4 | Insider transaction | Feb 23, 2024 | Feb 21, 2024 |
| 4 | Insider transaction | Feb 23, 2024 | Feb 21, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 19, 2024 | — |
| 4 | Insider transaction | Jan 16, 2024 | Jan 11, 2024 |
| 4 | Insider transaction | Nov 8, 2023 | Nov 6, 2023 |
| 4 | Insider transaction | Nov 8, 2023 | Nov 6, 2023 |
| 4 | Insider transaction | Nov 8, 2023 | Nov 6, 2023 |
| 4 | Insider transaction | Nov 8, 2023 | Nov 6, 2023 |
| 4 | Insider transaction | Nov 8, 2023 | Nov 6, 2023 |
| 4 | Insider transaction | Aug 11, 2023 | Aug 9, 2023 |
| 144 | Notice of proposed sale | Aug 8, 2023 | — |
| 4 | Insider transaction | Aug 8, 2023 | Aug 4, 2023 |
| 4 | Insider transaction | Aug 8, 2023 | Aug 4, 2023 |
| 4 | Insider transaction | Aug 8, 2023 | Aug 4, 2023 |
| 4 | Insider transaction | Aug 8, 2023 | Aug 4, 2023 |
| 4 | Insider transaction | Aug 8, 2023 | Aug 4, 2023 |
| 4 | Insider transaction | May 26, 2023 | May 24, 2023 |
| 144 | Notice of proposed sale | May 23, 2023 | — |
| 4 | Insider transaction | May 9, 2023 | May 5, 2023 |
| 4 | Insider transaction | May 9, 2023 | May 5, 2023 |
| 4 | Insider transaction | May 9, 2023 | May 5, 2023 |
| 4 | Insider transaction | May 9, 2023 | May 5, 2023 |
| 4 | Insider transaction | May 9, 2023 | May 5, 2023 |
Showing 200 filings, the most recent 200. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
New to this? Read What Are SEC Filings? 10-K, 10-Q, 8-K and Other Forms Explained.
Company profile
- Industry
- Natural Gas Distribution (SIC 4924)
- Listed as
- NWN (NYSE)
- Fiscal year ends
- December 31
- Incorporated in
- OR
- Headquarters
- Portland, OR
- SEC filer status
- Large accelerated filer
- SEC CIK
- 1733998
Other Natural Gas Distribution companies
Source: SEC EDGAR filings. This is company-reported data, not investment advice.