X0508 4 2026-03-05 0001733998 Northwest Natural Holding Co NWN 0001538965 Weber David A. 250 SW TAYLOR ST PORTLAND OR 97204 false true false true VP, Gas Supply NW Natural false Common Stock 2026-03-05 4 F false 546 52.53 D 2786.6040 D Common Stock 2026-03-05 4 F false 937 52.53 D 1849.6040 D Common Stock 2026-03-05 4 S false 0.6040 52.53 D 1849 D Common Stock 2235.0880 I See Footnote Common Stock 21917.23 I See Footnote Shares were withheld by the issuer to cover withholding taxes on issuance of shares due to vesting of restricted stock units. 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 27, 2026. Shares were withheld by the 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 27, 2026. Disposition of fractional shares in connection with the transfer of whole shares between accounts directly held by the reporting person. Shares have been credited to the reporting persons account under the Northwest Natural Gas Company Deferred Compensation Plan for Directors and Executives. Shares held in the reporting persons account under the Northwest Natural Retirement K Savings Plan as of February 28, 2026. Molly J. Wilcox, Attorney-in-Fact 2026-03-09