X0306 4 2020-03-04 0 0001733998 Northwest Natural Holding Co NWN 0001445672 Saathoff MardiLyn 220 NW SECOND AVENUE PORTLAND OR 97209 0 1 0 0 SVP, General Counse & Reg Common Stock 2020-03-04 4 F 0 584 65.02 D 14488.1235 D Common Stock 2020-03-04 4 F 0 1071 65.02 D 13417.1235 D Common Stock 8173.1620 I See Footnote Common Stock 1315.499 I See Footnote Shares were withheld by the issuer to cover withholding taxes on issuance of shares due to vesting of 1,797 restricted stock units (RSUs) with performance threshold, and vesting of 775 time-based RSUs. Organization and Executive Compensation Committee certification of satisfaction of the performance threshold and vesting for these restricted stock units was reported on Form 4 filed on February 28, 2020. The 775 time-based RSUs are part of 3,100 time-based RSUs that have been reported as shares beneficially owned by the reporting person since initially reported on the reporting person's Form 4 on July 29, 2016. Shares were withheld by issuer to cover withholding taxes on issuance of performance shares. Organization and Executive Compensation Committee certification of the payout of these performance shares was reported on Form 4 filed on February 28, 2020. Includes 1,550 time-based restricted stock units (RSUs) granted under issuer's Long Term Incentive Plan. The 1,550 RSUs vest on March 1, 2021. Shares have been credited to reporting person's account under the issuer'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 28, 2020. Shawn M. Filippi, Attorney-in-Fact 2020-03-06