On October 20, 2020, Martha L. Stormy" Byorum, member of the Board of Directors (Board) of Northwest Natural Holding Company (Company), announced her retirement from the Board and all committees thereof, effective December 31, 2020. She also announced her retirement from the Board of Directors of Northwest Natural Gas Company (NW Natural), the Company's wholly-owned subsidiary, and all committees thereof, effective December 31, 2020. Ms. Byorum has been a director since 2004 when she was first elected to the NW Natural, as predecessor of the Company, Board of Directors. Ms. Byorum serves on the Audit and Finance Committees of the Board. Ms. Byorum's decision to resign from the Board was not due to any disagreement with the Company on any matter relating to its operations, policies, practices or otherwise.