NWN - Northwest Natural Holding Company (NWN) Q4 2021 Earnings Call Transcript February, 25 2022 05:30 PM Northwest Natural Holding Company Image source: The Motley Fool. Northwest Natural Holding Company (NYSE: NWN) Q4 2021 Earnings Call Feb 25, 2022 , 11:00 a.m. ET Operator Continue reading For further details see: Northwest Natural Holding Company (NWN) Q4 2021 Earnings Call Transcript