 PORTLAND, Ore.--BUSINESS WIRE--NW Natural Holding Companys NYSE: NWN board of directors has elected two new board members, Karen Lee and Nathan Partain, effective January 1, 2021. For the past 10 years, Karen Lee has served as CEO of Pioneer Human Services, a nonprofit social-enterprise business based in Seattle, which operates several for-profit businesses to help fund its social mission to assist individuals with criminal histories lead healthy and productive lives. Prior, she served as 