Northwest Natural (NWN) SEC Filings & 10K Form $41.16 -0.25 (-0.60%) As of 10:11 AM Eastern This is a fair market value 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 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 TypeView05/06/202512:31 PMNorthwest Natural (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 (Filer)Northwest Natural Holding Co (Filer)Form ARS02/28/202510:26 AMNorthwest Natural (Filer)Northwest Natural Holding Co (Filer)Form 10-KAnnual report pursuant to Section 13 or 15(d) 12/30/202412:40 PMNorthwest Natural (Filer)Northwest Natural Holding Co (Filer)Form 8-KCurrent report pursuant to Section 13 or 15(d) 11/12/20242:48 PMNorthwest Natural (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 (Filer)Northwest Natural Holding Co (Filer)Form 8-KCurrent report pursuant to Section 13 or 15(d) 08/09/202412:34 PMNorthwest Natural (Filer)Northwest Natural Holding Co (Filer)Form 8-KCurrent report pursuant to Section 13 or 15(d) 08/02/202412:05 PMNorthwest Natural (Filer)Northwest Natural Holding Co (Filer)Form 10-QGeneral form for quarterly reports under Section 13 or 15(d) 07/25/20241:10 PMNorthwest Natural (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 SWX 10Q Form NJR 10Q Form CPK 10Q Form OKE 10Q Form ATO 10Q Form UGI 10Q Form NFG 10Q Form OGS 10Q Form SR 10Q Form UGP 10Q Form SEC Filings Tools Latest SEC FilingsInsider Trading Activity This page (NYSE:NWN) was last updated on 5/28/2025 by MarketBeat.com Staff From Our PartnersJuly 2025 Rule Change to Impact Retirement InvestorsThere's a massive change from a new rule going into effect this July. 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