Ms. Wasson (age 67) has served on the Board since 2015. She chairs the Audit Committee, and the Board has designated her as an audit committee financial expert. Ms. Wasson worked at U.S. Bank of Oregon for over 25 years, serving as President of U.S. Bank's Oregon and Southwest Washington operations from 2005 to 2015. In addition to her role as President, she led the Oregon Commercial Banking group for U.S. Bank, which provides a wide variety of financial services to middle market companies. She is Chief Executive Officer of Sand Creek Advisors LLC, which provides business consulting to CEOs of public and private companies. Ms. Wasson also serves as Chair of the Board of Directors of Northwest Natural Holding Company (NYSE: NWN) and its subsidiary, Northwest Natural Gas Company, and is a member of the Governance Committee, Audit Committee, and Organization and Executive Compensation Committee of both companies. Her extensive experience in commercial banking, finance, and accounting, as well as local and regional leadership, enables her to provide insight and advice to Columbia on strategic matters, including mergers and acquisitions; consumer and commercial businesses; regulatory, marketing, public, and government policy and relations; media relations; and change management, human capital management, and diversity.