NWN • SEC Gov • Feb 28, 2025 NWN : 10-K : Periodic Financial Reports Download Exhibits Related Filings from NWN 10-K EX-10.AA EX-10.M EX-10.O EX-10.X EX-19 EX-21 EX-23.A EX-23.B EX-31.1 EX-31.2 EX-31.3 EX-31.4 EX-32.1 EX-32.2 EX-4.S EX-4.T EX-4.U EX-4.V