# Northwest Natural Holding Co: filings

NWN · NYSE · CIK 1733998 · [Utilities](/sectors/utilities.md) · fiscal year ends Dec 31

Pages: [Overview](/companies/nwn.md) · [Financials](/companies/nwn/financials.md) · [Filings](/companies/nwn/filings.md) · [Insiders](/companies/nwn/insiders.md)

## Reports and events: 158 filings

Newest first, by EDGAR acceptance time (Eastern). Filter with ?form= one of: `periodic`, `8-K`, `10-K`, `10-Q`, `4`, `proxy`, `13dg`, `all`, or any form this company filed (4 387, 8-K 118, 10-Q 24, 3 14, 144 11, SC 13G/A 11, 10-K 8, 11-K 8, DEF 14A 8, S-8 POS 7, 5 6, S-8 6, 424B5 5, ARS 4, S-3ASR 3, SC 13G 3, UPLOAD 3, 424B2 2, 424B3 2, 4/A 2, CORRESP 2, SCHEDULE 13G 2, 305B2 1, 8-K12B 1, EFFECT 1, FWP 1, S-4 1, SCHEDULE 13G/A 1).

| Filed | Accepted | Form | What it is | Accession |
| --- | --- | --- | --- | --- |
| 2026-09-23 | 23:28 ET | [8-K](/filings/0001733998-26-000145.md) | 7.01 Regulation FD disclosure; 8.01 Other events; 9.01 Financial statements and exhibits | 0001733998-26-000145 |
| 2026-09-03 | 20:06 ET | [8-K](/filings/0001733998-26-000137.md) | 2.03 New direct financial obligation; 9.01 Financial statements and exhibits | 0001733998-26-000137 |
| 2026-08-05 | 17:41 ET | [10-Q](/filings/0001733998-26-000127.md) | Quarterly report, period 2026-06-30 | 0001733998-26-000127 |
| 2026-08-05 | 22:32 ET | [8-K](/filings/0001733998-26-000125.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001733998-26-000125 |
| 2026-07-31 | 20:11 ET | [8-K](/filings/0001733998-26-000123.md) | 8.01 Other events | 0001733998-26-000123 |
| 2026-06-05 | 22:23 ET | [8-K](/filings/0001733998-26-000114.md) | 1.01 Entry into a material agreement; 2.03 New direct financial obligation; 8.01 Other events; 9.01 Financial statements and exhibits | 0001733998-26-000114 |
| 2026-06-01 | 20:21 ET | [8-K](/filings/0001733998-26-000111.md) | 5.07 Shareholder vote results | 0001733998-26-000111 |
| 2026-05-06 | 20:11 ET | [10-Q](/filings/0001733998-26-000087.md) | Quarterly report, period 2026-03-31 | 0001733998-26-000087 |
| 2026-05-06 | 21:42 ET | [8-K](/filings/0001733998-26-000085.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001733998-26-000085 |
| 2026-04-17 | 18:02 ET | [DEF 14A](/filings/0001193125-26-161075.md) | Proxy statement, period 2026-05-28 | 0001193125-26-161075 |
| 2026-03-24 | 23:09 ET | [8-K](/filings/0001733998-26-000081.md) | 8.01 Other events | 0001733998-26-000081 |
| 2026-02-27 | 18:33 ET | [10-K](/filings/0001733998-26-000012.md) | Annual report, period 2025-12-31 | 0001733998-26-000012 |
| 2026-02-27 | 01:00 ET | [8-K](/filings/0001733998-26-000006.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001733998-26-000006 |
| 2025-12-16 | 21:50 ET | [8-K](/filings/0001733998-25-000191.md) | 2.03 New direct financial obligation; 9.01 Financial statements and exhibits | 0001733998-25-000191 |
| 2025-12-15 | 00:35 ET | [8-K](/filings/0001733998-25-000189.md) | 5.02 Departure or appointment of officers or directors; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001733998-25-000189 |
| 2025-11-05 | 18:34 ET | [10-Q](/filings/0001733998-25-000176.md) | Quarterly report, period 2025-09-30 | 0001733998-25-000176 |
| 2025-11-05 | 23:47 ET | [8-K](/filings/0001733998-25-000174.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001733998-25-000174 |
| 2025-10-28 | 22:46 ET | [8-K](/filings/0001733998-25-000172.md) | 8.01 Other events | 0001733998-25-000172 |
| 2025-09-02 | 23:04 ET | [8-K](/filings/0001733998-25-000144.md) | 8.01 Other events | 0001733998-25-000144 |
| 2025-08-26 | 21:33 ET | [8-K](/filings/0001733998-25-000142.md) | 8.01 Other events | 0001733998-25-000142 |
| 2025-08-05 | 18:44 ET | [10-Q](/filings/0001733998-25-000132.md) | Quarterly report, period 2025-06-30 | 0001733998-25-000132 |
| 2025-08-05 | 23:42 ET | [8-K](/filings/0001733998-25-000130.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001733998-25-000130 |
| 2025-07-25 | 20:35 ET | [8-K](/filings/0001733998-25-000125.md) | 5.03 Amendment to articles or bylaws; 9.01 Financial statements and exhibits | 0001733998-25-000125 |
| 2025-07-03 | 00:33 ET | [8-K](/filings/0001733998-25-000117.md) | 5.02 Departure or appointment of officers or directors; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001733998-25-000117 |
| 2025-06-24 | 01:00 ET | [8-K](/filings/0001733998-25-000111.md) | 8.01 Other events | 0001733998-25-000111 |
| 2025-05-27 | 22:55 ET | [8-K](/filings/0001733998-25-000108.md) | 5.02 Departure or appointment of officers or directors; 5.07 Shareholder vote results; 9.01 Financial statements and exhibits | 0001733998-25-000108 |
| 2025-05-06 | 17:31 ET | [10-Q](/filings/0001733998-25-000094.md) | Quarterly report, period 2025-03-31 | 0001733998-25-000094 |
| 2025-05-06 | 23:00 ET | [8-K](/filings/0001733998-25-000091.md) | 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001733998-25-000091 |
| 2025-04-10 | 18:00 ET | [DEF 14A](/filings/0001193125-25-077782.md) | Proxy statement, period 2025-05-22 | 0001193125-25-077782 |
| 2025-03-18 | 14:58 ET | [8-K](/filings/0001733998-25-000078.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001733998-25-000078 |
| 2025-02-28 | 16:26 ET | [10-K](/filings/0001733998-25-000020.md) | Annual report, period 2024-12-31 | 0001733998-25-000020 |
| 2025-02-28 | 23:18 ET | [8-K](/filings/0001733998-25-000017.md) | 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001733998-25-000017 |
| 2025-01-10 | 02:00 ET | [8-K](/filings/0001733998-25-000006.md) | 5.02 Departure or appointment of officers or directors; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001733998-25-000006 |
| 2025-01-08 | 23:25 ET | [8-K](/filings/0001733998-25-000004.md) | 2.03 New direct financial obligation; 7.01 Regulation FD disclosure; 8.01 Other events; 9.01 Financial statements and exhibits | 0001733998-25-000004 |
| 2025-01-06 | 17:37 ET | [8-K](/filings/0001733998-25-000002.md) | 2.03 New direct financial obligation | 0001733998-25-000002 |
| 2024-12-30 | 18:40 ET | [8-K](/filings/0001733998-24-000143.md) | 8.01 Other events | 0001733998-24-000143 |
| 2024-12-19 | 17:24 ET | [8-K](/filings/0001733998-24-000139.md) | 2.03 New direct financial obligation | 0001733998-24-000139 |
| 2024-11-18 | 21:31 ET | [8-K](/filings/0001733998-24-000128.md) | 7.01 Regulation FD disclosure; 8.01 Other events; 9.01 Financial statements and exhibits | 0001733998-24-000128 |
| 2024-11-12 | 20:48 ET | [10-Q](/filings/0001733998-24-000125.md) | Quarterly report, period 2024-09-30 | 0001733998-24-000125 |
| 2024-11-12 | 11:01 ET | [8-K](/filings/0001733998-24-000122.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001733998-24-000122 |
| 2024-10-29 | 16:29 ET | [8-K](/filings/0001733998-24-000118.md) | 7.01 Regulation FD disclosure; 8.01 Other events | 0001733998-24-000118 |
| 2024-08-22 | 20:49 ET | [8-K](/filings/0001733998-24-000102.md) | 5.02 Departure or appointment of officers or directors | 0001733998-24-000102 |
| 2024-08-09 | 21:25 ET | [8-K](/filings/0001193125-24-197980.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001193125-24-197980 |
| 2024-08-09 | 17:34 ET | [8-K](/filings/0001193125-24-197711.md) | 5.02 Departure or appointment of officers or directors; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001193125-24-197711 |
| 2024-08-02 | 17:05 ET | [10-Q](/filings/0001733998-24-000093.md) | Quarterly report, period 2024-06-30 | 0001733998-24-000093 |
| 2024-08-02 | 22:17 ET | [8-K](/filings/0001733998-24-000091.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001733998-24-000091 |
| 2024-07-25 | 18:10 ET | [8-K](/filings/0001733998-24-000089.md) | 8.01 Other events | 0001733998-24-000089 |
| 2024-05-29 | 20:42 ET | [8-K](/filings/0001733998-24-000085.md) | 5.03 Amendment to articles or bylaws; 5.07 Shareholder vote results; 8.01 Other events; 9.01 Financial statements and exhibits | 0001733998-24-000085 |
| 2024-05-23 | 21:00 ET | [8-K](/filings/0001733998-24-000083.md) | 5.02 Departure or appointment of officers or directors; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001733998-24-000083 |
| 2024-05-06 | 18:23 ET | [10-Q](/filings/0001733998-24-000075.md) | Quarterly report, period 2024-03-31 | 0001733998-24-000075 |

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Source: SEC EDGAR, the company’s filing index. Last ingested by Listed: Oct 24, 2026, 15:15 ET. No prices; not investment advice.