Financial reports
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Other
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Ownership
4
NORTHWEST NATURAL GAS CO
13 Jul 16
4
NORTHWEST NATURAL GAS CO
14 Jun 16
4/A
NORTHWEST NATURAL GAS CO
14 Jun 16
4
NORTHWEST NATURAL GAS CO
12 May 16
4
NORTHWEST NATURAL GAS CO
17 Mar 16
4
NORTHWEST NATURAL GAS CO
8 Mar 16
4
NORTHWEST NATURAL GAS CO
2 Mar 16
4
NORTHWEST NATURAL GAS CO
26 Feb 16
4
NORTHWEST NATURAL GAS CO
19 Jan 16