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Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:
SEC Accession No. 0001733998-21-000006
Filing Date
2021-02-26
Accepted
2021-02-26 15:11:50
Documents
121
Period of Report
2020-12-31

Document Format Files

Seq Description Document Type Size
1 10-K nwn-20201231.htm   iXBRL 10-K 5457543
2 EX-3.B exhibit3brestatedarticleso.htm EX-3.B 44665
3 EX-10.LL ex10ll_2021nwngsaipplan.htm EX-10.LL 16954
4 EX-10.O ex10oexecutiveannualincent.htm EX-10.O 67692
5 EX-10.W ex10w2021-2023pspgrantagre.htm EX-10.W 88236
6 EX-10.Z ex10z2021rsugrantagreement.htm EX-10.Z 90186
7 EX-21 ex2112312020.htm EX-21 23948
8 EX-23.A ex23a2020consentofpublicac.htm EX-23.A 2252
9 EX-23.B ex23b2020consentofpublicac.htm EX-23.B 2078
10 EX-31.1 ex311q42020_ceo.htm EX-31.1 7421
11 EX-31.2 ex312q42020_cfo.htm EX-31.2 7479
12 EX-31.3 ex313q42020_ceo.htm EX-31.3 7426
13 EX-31.4 ex314q42020_cfo.htm EX-31.4 7457
14 EX-32.1 ex321q42020_ceocfo.htm EX-32.1 4668
15 EX-32.2 ex322q42020_ceocfo.htm EX-32.2 4686
21 nwn-20201231_g1.jpg GRAPHIC 57055
22 nwn-20201231_g2.jpg GRAPHIC 38736
  Complete submission text file 0001733998-21-000006.txt   23201842

Data Files

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23 EXTRACTED XBRL INSTANCE DOCUMENT nwn-20201231_htm.xml XML 4778262
Mailing Address 250 SW TAYLOR STREET PORTLAND OR 97204
Business Address 250 SW TAYLOR STREET PORTLAND OR 97204 5032264211
NORTHWEST NATURAL GAS CO (Filer) CIK: 0000073020 (see all company filings)

IRS No.: 930256722 | State of Incorp.: OR | Fiscal Year End: 1231
Type: 10-K | Act: 34 | File No.: 001-15973 | Film No.: 21687810
SIC: 4924 Natural Gas Distribution

Mailing Address 250 SW TAYLOR STREET PORTLAND OR 97204
Business Address 250 SW TAYLOR STREET PORTLAND OR 97204 503-226-4211
Northwest Natural Holding Co (Filer) CIK: 0001733998 (see all company filings)

IRS No.: 824710680 | State of Incorp.: OR | Fiscal Year End: 1231
Type: 10-K | Act: 34 | File No.: 001-38681 | Film No.: 21687809
SIC: 4924 Natural Gas Distribution