X0306 4 2022-02-23 0 0001733998 Northwest Natural Holding Co NWN 0001538965 Weber David A. 250 SW TAYLOR ST PORTLAND OR 97204 0 1 0 1 VP, Gas Supply NW Natural Common Stock 2022-02-23 4 A 0 769 0 A 910.198 D Common Stock 2022-02-23 4 A 0 1275 0 A 2185.198 D Common Stock 1865.704 I See Footnote Common Stock 14594.088 I See Footnote Shares are issuable as a result of satisfaction of the performance threshold for 2021 under restricted stock unit awards. Organization and Executive Compensation Committee certification of the satisfaction of the performance threshold occurred on the transaction date. Shares are issuable as a result of satisfaction of performance goals for 2019-2021 under a performance share award. Organization and Executive Compensation Committee certification of the award payout level occurred on the transaction date. Reflects shares that have been credited to reporting person's account under Northwest Natural Gas Company's Deferred Compensation Plan for Directors and Executives. Shares held in reporting person's account under Northwest Natural Gas Company's Retirement K Savings Plan as of February 15, 2022. Shawn M. Filippi, Attorney-in-Fact 2022-02-25