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 |
|---|---|---|---|
| 11-K | Employee savings plan report | Jun 25, 2026 | Dec 31, 2025 |
| 11-K | Employee savings plan report | Jun 26, 2025 | Dec 31, 2024 |
| 305B2 | Filing | Mar 12, 2025 | — |
| 11-K | Employee savings plan report | Jun 14, 2024 | Dec 31, 2023 |
| 11-K | Employee savings plan report | Oct 18, 2023 | Dec 31, 2022 |
| 11-K | Employee savings plan report | Jun 24, 2022 | Dec 31, 2021 |
| 11-K | Employee savings plan report | Jun 21, 2021 | Dec 31, 2020 |
| 11-K | Employee savings plan report | Jun 26, 2020 | Dec 31, 2019 |
| UPLOAD | Letter from the SEC | Sep 26, 2019 | — |
| CORRESP | Letter to the SEC | Sep 17, 2019 | — |
| UPLOAD | Letter from the SEC | Sep 5, 2019 | — |
| 11-K | Employee savings plan report | Jun 25, 2019 | Jun 24, 2019 |
| 8-K12B | Filing | Oct 1, 2018 | Oct 1, 2018 |
| EFFECT | Filing | Apr 18, 2018 | — |
| CORRESP | Letter to the SEC | Apr 13, 2018 | — |
| UPLOAD | Letter from the SEC | Mar 19, 2018 | — |
Showing 16 filings. 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.
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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.