# NORTHWEST NATURAL GAS CO — DEF 14A

NORTHWEST NATURAL GAS CO of PORTLAND, OR filed a DEF 14A with the SEC on 2011-04-18. Industry: Natural Gas Distribution.

## Filing

- Filed: 2011-04-18
- Form: DEF 14A
- Accession: 0001193125-11-100519
- Registrant: NORTHWEST NATURAL GAS CO
- CIK: 0000073020
- Industry (SIC): Natural Gas Distribution (4924)
- State of incorporation: OR
- Location: PORTLAND, OR

## Documents (15)

| Seq | Type | Description |
| --- | --- | --- |
| 1 | DEF 14A | DEFINITIVE PROXY STATEMENT |
| 2 | GRAPHIC | GRAPHIC |
| 3 | GRAPHIC | GRAPHIC |
| 4 | GRAPHIC | GRAPHIC |
| 5 | GRAPHIC | GRAPHIC |
| 6 | GRAPHIC | GRAPHIC |
| 7 | GRAPHIC | GRAPHIC |
| 8 | GRAPHIC | GRAPHIC |
| 9 | GRAPHIC | GRAPHIC |
| 10 | GRAPHIC | GRAPHIC |
| 11 | GRAPHIC | GRAPHIC |
| 12 | GRAPHIC | GRAPHIC |
| 13 | GRAPHIC | GRAPHIC |
| 14 | GRAPHIC | GRAPHIC |
| 15 | GRAPHIC | GRAPHIC |

## Filing timeline for this registrant (30)

_Showing 12 of 30 filings._

| Filed | Form |
| --- | --- |
| [2018-04-18](https://search.stillhousedata.com/proxy/0001193125-18-120832) | DEF 14A |
| [2017-04-13](https://search.stillhousedata.com/proxy/0001193125-17-122808) | DEF 14A |
| [2016-04-22](https://search.stillhousedata.com/proxy/0001193125-16-550528) | DEFR14A |
| [2016-04-15](https://search.stillhousedata.com/proxy/0001193125-16-542719) | DEF 14A |
| [2015-04-17](https://search.stillhousedata.com/proxy/0001193125-15-134872) | DEF 14A |
| [2014-04-14](https://search.stillhousedata.com/proxy/0001193125-14-142494) | DEF 14A |
| [2013-04-15](https://search.stillhousedata.com/proxy/0001193125-13-154621) | DEF 14A |
| [2012-04-12](https://search.stillhousedata.com/proxy/0001193125-12-160222) | DEF 14A |
| 2011-04-18 | DEF 14A |
| [2010-04-19](https://search.stillhousedata.com/proxy/0001193125-10-086401) | DEF 14A |
| [2009-04-20](https://search.stillhousedata.com/proxy/0001193125-09-082541) | DEF 14A |
| [2008-04-14](https://search.stillhousedata.com/proxy/0001193125-08-080545) | DEF 14A |

## More

- [CIK 73020 on SEC EDGAR (source of record)](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=73020&type=&dateb=&owner=include&count=40)
- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/proxy/0001193125-11-100519.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.