X0508 4 2026-02-25 0001733998 Northwest Natural Holding Co NWN 0002038828 Fellon Brian 250 SW TAYLOR ST PORTLAND OR 97204 false true false true VP, CIO & CISO NW Natural false Common Stock 2026-02-25 4 A false 368.0000 0.00 A 1747.0000 D Shares are issuable as a result of satisfaction of the performance threshold for 2025 under restricted stock unit awards. Organization and Executive Compensation Committee certification of the satisfaction of the performance threshold occurred on the transaction date. Includes 1,020 time-based restricted stock units granted under the Long Term Incentive Plan of the Issuer. The restricted stock units vest in two equal installments on each of October 1, 2026 and 2027. Molly J. Wilcox, Attorney-in-Fact 2026-02-27