| Filed On | Filing |
|---|---|
| 06 Nov 2023 | S-8 |
| 03 Nov 2017 | S-8 |
| 03 Nov 2016 | S-8 |
| 01 Mar 2013 | FORM S-8 |
| 26 Mar 2012 | FORM S-8 |
| 05 Jan 2007 | REGISTRATION STATEMENT |
| 13 Jun 2006 | FORM S-8 |
| 02 Dec 2004 | FORM S-8 |
| 31 Oct 2002 | FORM S-8 |
| 26 Sep 2001 | FORM S-8 |
| 05 Feb 2001 | FORM S-8 FOR NORTHWEST NATURAL GAS COMPANY |
| 22 Sep 2000 | FORM S-8 FOR NORTHWEST NATURAL GAS COMPANY |
| 31 Mar 1998 | FORM S-8 |
| 20 Oct 1995 | FORM S-8, RETIREMENT K SAVINGS PLAN |
| 28 Sep 1995 | FORM S-8 |
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