X0306 4 2022-06-22 0 0001733998 Northwest Natural Holding Co NWN 0001241405 ANDERSON DAVID HUGO 250 SW TAYLOR ST PORTLAND OR 97204 1 1 0 0 President & CEO Common Stock 2022-06-22 4 S 0 1126.516 52.4397 D 0 I See Footnote Common Stock 12642.834 I See Footnote Common Stock 125675.4909 D This transaction reflects an administrative liquidation of stock held in reporting person's account under Northwest Natural Gas Company's Retirement K Savings Plan in connection with a rollover of reporting person's 401(k) account. After this disposition, reporting person continues to directly and indirectly hold 138,318.3249 shares of Northwest Natural Holding Company stock. The price reported reflects the amount per share credited to reporting person's account under Northwest Natural Gas Company's Retirement K Savings Plan with respect to the shares sold. Shares held in reporting person's account under Northwest Natural Gas Company's Retirement K Savings Plan as of June 22, 2022. Shares have been credited to reporting person's account under Northwest Natural Gas Company's Deferred Compensation Plan for Directors and Executives. Shawn M. Filippi, Attorney-in-Fact 2022-06-24