Northwest Natural Gas (NWN) SEC Filings & 10K Form $42.02 +1.31 (+3.21%) Closing price 08/22/2025 03:59 PM EasternExtended Trading$42.08 +0.06 (+0.14%) As of 08/22/2025 04:29 PM Eastern Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more. Add Compare Share Share SEC Filings Stock AnalysisAnalyst ForecastsChartCompetitorsDividendEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock Recent Northwest Natural Gas SEC Filings All Filing Types 1 10 10-D 10-K 10-M 10-Q 11-K 12b-25 13F 13H 144 15 15F 17-H 18 18-K 19b-4(e) 19b-4 19b-7 1-A 1-E 1-K 1-N 1-SA 1-U 1-Z 20-F 24F-2 25 2-E 3 4 40-F 5 6-K 7-M 8-A 8-K 8-M 9-M ABS DD-15E ABS-15G ABS-EE ADV ADV-E ADV-H ADV-NR ADV-W ATS ATS-R BD BD-N BDW C CA-1 CB CFPORTAL D F-1 F-10 F-3 F-4 F-6 F-7 F-8 F-80 F-N F-X ID MA MA-I MA-NR MA-W MSD MSDW n/a N-14 N-17D-1 N-17f-1 N-17f-2 N-18f-1 N-1A N-2 N-23c-3 N-27D-1 N-3 N-4 N-5 N-54A N-54C N-6 N-6EI-1 N-6F N-8A N-8B-2 N-8B-4 N-8F N-CR N-CSR N-MFP N-PX N-Q NRSRO N-SAR PF PILOT R31 S-1 S-11 S-20 S-3 S-4 S-6 S-8 SBSE SBSE-A SBSE-BD SBSE-C SBSE-W SCI SD SDR SE SF-1 SF-3 SIP T-1 T-2 T-3 T-4 T-6 TA-1 TA-2 TA-W TCR TH WB-APP X-17A-19 X-17A-5 Part I X-17A-5 Part II X-17A-5 Part IIA X-17A-5 Part IIB X-17A-5 Part III X-17A-5 Schedule I X-17F-1A Filing Types Include Ownership Filings Exclude Ownership Filings Only Show Ownership FIlings Ownership Filings Custom Range 1 Month 3 Months 6 Months Year-to-Date 1 Year 2 Years 3 Years Time Frame Start Date End Date Export to Excel DateFilerForm TypeView08/05/20251:44 PMNorthwest Natural Gas (Filer)Northwest Natural Holding Co (Filer)Form 10-QGeneral form for quarterly reports under Section 13 or 15(d) 06/23/20258:00 PMNorthwest Natural Gas (Filer)Northwest Natural Holding Co (Filer)Form 8-KCurrent report pursuant to Section 13 or 15(d) 05/06/202512:31 PMNorthwest Natural Gas (Filer)Northwest Natural Holding Co (Filer)Form 10-QGeneral form for quarterly reports under Section 13 or 15(d) 04/10/20251:03 PMNorthwest Natural Gas (Filer)Northwest Natural Holding Co (Filer)Form ARS02/28/202510:26 AMNorthwest Natural Gas (Filer)Northwest Natural Holding Co (Filer)Form 10-KAnnual report pursuant to Section 13 or 15(d) 12/30/202412:40 PMNorthwest Natural Gas (Filer)Northwest Natural Holding Co (Filer)Form 8-KCurrent report pursuant to Section 13 or 15(d) 11/12/20242:48 PMNorthwest Natural Gas (Filer)Northwest Natural Holding Co (Filer)Form 10-QGeneral form for quarterly reports under Section 13 or 15(d) 10/29/202411:29 AMNorthwest Natural Gas (Filer)Northwest Natural Holding Co (Filer)Form 8-KCurrent report pursuant to Section 13 or 15(d) (Data available from 1/1/2016 forward) Related Companies and Tools Related Companies ATO 10Q Form AVA 10Q Form BKH 10Q Form CPK 10Q Form NJR 10Q Form NWE 10Q Form OGE 10Q Form OGS 10Q Form POR 10Q Form SR 10Q Form SEC Filings Tools Latest SEC FilingsInsider Trading Activity This page (NYSE:NWN) was last updated on 8/23/2025 by MarketBeat.com Staff From Our PartnersBONUS GUIDE - Ben Stein Prepares For the Next Financial CrisisWith inflation high, debt soaring, and global tensions rising, a financial storm may be brewing. 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