NWN

SEC source: 0001733998-24-000057 · form4.xml · nonDerivative · entry 1

Rogers Melinda B. · CIK 0001748944 · VP, Chief HR & Diversity Off. · NW Natural

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,506.13

F1 · shares: Shares were withheld by the issuer to cover withholding taxes on issuance of shares due to vesting of 83 restricted stock units (RSUs) with performance threshold and vesting of 651 time-based RSUs. Organization and Executive Compensation Committee certification of satisfaction of the performance threshold and vesting for the 83 RSUs was reported on Form 4 filed on February 23, 2024. The 651 time-based RSUs are part of 2,604 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 February 25, 2022.

F2 · balance_after: Includes 1,302 time-based RSUs granted under issuer's Long Term Incentive Plan. The RSUs vest in two equal installments on each of March 1, 2025 and 2026.

SEC source: 0001733998-24-000053 · form4.xml · nonDerivative · entry 1

Kravitz Zachary D · CIK 0001940844 · VP, Rates & Regulatory · NW Natural

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,439.4963

F1 · shares: Shares were withheld by the issuer to cover withholding taxes on issuance of shares due to vesting of 255 restricted stock units (RSUs) with performance threshold and vesting of 104 time-based RSUs. Organization and Executive Compensation Committee certification of the satisfaction of the performance threshold and vesting for 255 RSUs was reported on Form 4 filed on February 23, 2024. The 104 time-based RSUs are part of 372 time-based RSUs that have been reported as shares beneficially owned by the reporting person since initially reported on the reporting person's Form 3 on August 4, 2022.

F2 · balance_after: Includes 164 time-based RSUs granted under issuer's Long Term Incentive Plan. The RSUs vest in two installments: 104 shares on March 1, 2025 and 60 shares on March 1, 2026.

SEC source: 0001733998-24-000051 · form4.xml · nonDerivative · entry 1

Karney Joseph S · CIK 0001972619 · VP, Eng & Utility Operations · NW Natural

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,206.6568

F1 · shares: Shares were withheld by the issuer to cover withholding taxes on issuance of shares due to vesting of 164 restricted stock units (RSUs) with performance threshold and vesting of 108 time-based RSUs . Organization and Executive Compensation Committee certification of the satisfaction of the performance threshold and vesting for 164 RSUs was reported on Form 4 filed on February 23, 2024. The 108 time-based RSUs are part of 300 time-based RSUs that have been reported as shares beneficially owned by the reporting person since initially reported on the reporting person's Form 3 on April 12, 2023.

F2 · balance_after: Includes 162 time-based RSUs granted under issuer's Long Term Incentive Plan. The RSUs vest in two installments: 108 shares on March 1, 2025 and 54 shares on March 1, 2026.

SEC source: 0001733998-24-000041 · form4.xml · nonDerivative · entry 1

MCCURDY DAVID K · CIK 0001069010 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 4,271.048

F1 · kind: The reporting transaction was effected pursuant to a written election under Northwest Natural Gas Company's Deferred Compensation Plan for Directors and Executives made on or about Sept. 14, 2020. At the time made, the election was intended to satisfy the then-current Rule 10b5-1. The election has not been entered into, modified or terminated since the original election date.

F2 · ownership.nature: Shares have been credited to reporting person's account under Northwest Natural Gas Company's Deferred Compensation Plan for Directors and Executives.

SEC source: 0001733998-24-000043 · form4.xml · nonDerivative · entry 1

McDonough Sandra · CIK 0001901349 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 4,968.975

F1 · kind: The reporting transaction was effected pursuant to a written election under Northwest Natural Gas Company's Deferred Compensation Plan for Directors and Executives on or about January 6, 2022. At the time made, the election was intended to satisfy the then-current Rule 10b5-1. The election has not been entered into, modified or terminated since the original election date.

F2 · ownership.nature: Shares have been credit to reporting person's account under Northwest Natural Gas Company's Deferred Compensation Plan for Directors and Executives.

SEC source: 0001733998-24-000039 · form4.xml · nonDerivative · entry 1

Lee Karen · CIK 0001839510 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 10,834.456

F1 · kind: The reporting transaction was effected pursuant to a written election under Northwest Natural Gas Company's Deferred Compensation Plan for Directors and Executives made on or about June 1, 2021. At the time made, the election was intended to satisfy the then-current Rule 10b5-1. The election has not been entered into, modified or terminated since the original election date.

F2 · ownership.nature: Shares have been credited to reporting person's account under Northwest Natural Gas Company's Deferred Compensation Plan for Directors and Executives.

SEC source: 0001733998-24-000015 · form4.xml · nonDerivative · entry 2

DOWNING JAMES R · CIK 0001717381 · VP, CIO · NW Natural

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,650.457

F2 · shares: Shares are issuable as a result of satisfaction of performance goals for 2021-2023 under a performance share award. Organization and Executive Compensation Committee certification of the award payout level occurred on the transaction date.

SEC source: 0001733998-24-000015 · form4.xml · nonDerivative · entry 1

DOWNING JAMES R · CIK 0001717381 · VP, CIO · NW Natural

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,311.457

F1 · shares: Shares are issuable as a result of satisfaction of the performance threshold for 2023 under restricted stock unit awards. Organization and Executive Compensation Committee certification of the satisfaction of the performance threshold occurred on the transaction date.

SEC source: 0001733998-24-000023 · form4.xml · nonDerivative · entry 2

Palfreyman Justin · CIK 0001686243 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,191

F2 · shares: Shares are issuable as a result of satisfaction of performance goals for 2021-2023 under a performance share award. Organization and Executive Compensation Committee certification of the award payout level occurred on the transaction date.

SEC source: 0001733998-24-000023 · form4.xml · nonDerivative · entry 1

Palfreyman Justin · CIK 0001686243 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,513

F1 · shares: Shares are issuable as a result of satisfaction of the performance threshold for 2023 under restricted stock unit awards. Organization and Executive Compensation Committee certification of the satisfaction of the performance threshold occurred on the transaction date.

SEC source: 0001733998-24-000029 · form4.xml · nonDerivative · entry 3

Saathoff MardiLyn · CIK 0001445672 · SVP, General Counsel & Reg

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 27,827.1235

F3 · shares: Shares are issuable as a result of satisfaction of performance goals for 2021-2023 under a performance share award. Organization and Executive Compensation Committee certification of the award payout level occurred on transaction date.

SEC source: 0001733998-24-000029 · form4.xml · nonDerivative · entry 2

Saathoff MardiLyn · CIK 0001445672 · SVP, General Counsel & Reg

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 14,725.975

F2 · shares: Shares are issuable as a result of satisfaction of the performance threshold for 2023 under restricted stock unit awards, and credited to reporting person's account under Northwest Natural Gas Company's Deferred Compensation Plan for Directors and Executives pursuant to a prior election. Organization and Executive Compensation Committee certification of the satisfaction of the performance threshold occurred on the transaction date.

F4 · ownership.nature: Shares have been credited to reporting person's account under Northwest Natural Gas Company's Deferred Compensation Plan for Directors and Executives.

SEC source: 0001733998-24-000029 · form4.xml · nonDerivative · entry 1

Saathoff MardiLyn · CIK 0001445672 · SVP, General Counsel & Reg

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,540.1235

F1 · shares: Shares are issuable as a result of satisfaction of the performance threshold for 2023 under restricted stock unit awards. Organization and Executive Compensation Committee certification of the satisfaction of the performance threshold occurred on the transaction date.

SEC source: 0001733998-24-000013 · form4.xml · nonDerivative · entry 2

ANDERSON DAVID HUGO · CIK 0001241405 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 160,854

F2 · shares: Shares are issuable as a result of satisfaction of performance goals for 2021-2023 under a performance share award. Organization and Executive Compensation Committee certification of the award payout level occurred on the transaction date.

SEC source: 0001733998-24-000013 · form4.xml · nonDerivative · entry 1

ANDERSON DAVID HUGO · CIK 0001241405 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 146,925

F1 · shares: Shares are issuable as a result of satisfaction of the performance threshold for 2023 under restricted stock unit awards. Organization and Executive Compensation Committee certification of the satisfaction of the performance threshold occurred on the transaction date.

SEC source: 0001733998-24-000031 · form4.xml · nonDerivative · entry 2

Weber David A. · CIK 0001538965 · VP, Gas Supply · NW Natural

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,375.634

F2 · shares: Shares are issuable as a result of satisfaction of performance goals for 2021-2023 under a performance share award. Organization and Executive Compensation Committee certification of the award payout level occurred on the transaction date.

SEC source: 0001733998-24-000031 · form4.xml · nonDerivative · entry 1

Weber David A. · CIK 0001538965 · VP, Gas Supply · NW Natural

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,036.634

F1 · shares: Shares are issuable as a result of satisfaction of the performance threshold for 2023 under restricted stock unit awards. Organization and Executive Compensation Committee certification of the satisfaction of the performance threshold occurred on the transaction date.

SEC source: 0001733998-24-000035 · form4.xml · nonDerivative · entry 2

WILSON BRODY J · CIK 0001571275 · CFO, VP, Treas., & CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,320

F2 · shares: Shares are issuable as a result of satisfaction of performance goals for 2021-2023 under a performance share award. Organization and Executive Compensation Committee certification of the award payout level occurred on the transaction date.

SEC source: 0001733998-24-000035 · form4.xml · nonDerivative · entry 1

WILSON BRODY J · CIK 0001571275 · CFO, VP, Treas., & CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,981

F1 · shares: Shares are issuable as a result of satisfaction of the performance threshold for 2023 under restricted stock unit awards. Organization and Executive Compensation Committee certification of the satisfaction of the performance threshold occurred on the transaction date.

SEC source: 0001733998-24-000017 · form4.xml · nonDerivative · entry 4

Filippi Shawn M · CIK 0001629792 · VP, CCO & Corporate Secretary

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 12,346.032

F4 · shares: Shares are issuable as a result of satisfaction of performance goals for 2021-2023 under a performance share award, and credited to reporting person's account under Northwest Natural Gas Company's Deferred Compensation Plan for Directors and Executives pursuant to a prior election. Organization and Executive Compensation Committee certification of the award payout level occurred on the transaction date.

F5 · ownership.nature: Shares have been credited to reporting person's account under Northwest Natural Gas Company's Deferred Compensation Plan for Directors and Executives.

SEC source: 0001733998-24-000017 · form4.xml · nonDerivative · entry 3

Filippi Shawn M · CIK 0001629792 · VP, CCO & Corporate Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,194.3438

F3 · shares: Shares are issuable as a result of satisfaction of performance goals for 2021-2023 under a performance share award. Organization and Executive Compensation Committee certification of the award payout level occurred on the transaction date.

SEC source: 0001733998-24-000017 · form4.xml · nonDerivative · entry 2

Filippi Shawn M · CIK 0001629792 · VP, CCO & Corporate Secretary

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 11,381.032

F2 · shares: Shares are issuable as a result of satisfaction of the performance threshold for 2023 under restricted stock unit awards, and credited to reporting person's account under Northwest Natural Gas Company's Deferred Compensation Plan for Directors and Executives pursuant to a prior election. Organization and Executive Compensation Committee certification of the satisfaction of the performance threshold occurred on the transaction date.

F5 · ownership.nature: Shares have been credited to reporting person's account under Northwest Natural Gas Company's Deferred Compensation Plan for Directors and Executives.

SEC source: 0001733998-24-000017 · form4.xml · nonDerivative · entry 1

Filippi Shawn M · CIK 0001629792 · VP, CCO & Corporate Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,087.3438

F1 · shares: Shares are issuable as a result of satisfaction of the performance threshold for 2023 under restricted stock unit awards. Organization and Executive Compensation Committee certification of the satisfaction of the performance threshold occurred on the transaction date.

SEC source: 0001733998-24-000027 · form4.xml · nonDerivative · entry 2

RUSH KIMBERLY HEITING · CIK 0001629836 · SVP & COO · NW Natural

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,577.7435

F2 · shares: Shares are issuable as a result of satisfaction of performance goals for 2021-2023 under a performance share award. Organization and Executive Compensation Committee certification of the award payout level occurred on the transaction date.

SEC source: 0001733998-24-000027 · form4.xml · nonDerivative · entry 1

RUSH KIMBERLY HEITING · CIK 0001629836 · SVP & COO · NW Natural

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,828.7435

F1 · shares: Shares are issuable as a result of satisfaction of the performance threshold for 2023 under restricted stock unit awards. Organization and Executive Compensation Committee certification of the satisfaction of the performance threshold occurred on the transaction date.

SEC source: 0001733998-24-000037 · form4.xml · nonDerivative · entry 2

Karney Joseph S · CIK 0001972619 · VP, Eng & Utility Operations · NW Natural

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 112.535

F3 · shares: Shares are issuable as a result of satisfaction of the performance threshold for 2023 under restricted stock unit awards, and credited to reporting person's account under Northwest Natural Gas Company's Deferred Compensation Plan for Directors and Executives pursuant to a prior election. Organization and Executive Compensation Committee certification of the satisfaction of the performance threshold occurred on the transaction date.

F4 · balance_after: Includes 30 time-based RSUs granted under issuer's Long Term Incentive Plan. The reporting person previously elected that shares received on vesting of such RSUs will be deferred under Northwest Natural Gas Company's Deferred Compensation Plan for Directors and Executives. The RSUs will vest in three installments: 12 shares on each of March 1, 2024 and 2025 and 6 shares on March 1, 2026.

F5 · ownership.nature: Shares have been credited to reporting person's account under Northwest Natural Gas Company's Deferred Compensation Plan for Directors and Executives.

SEC source: 0001733998-24-000037 · form4.xml · nonDerivative · entry 1

Karney Joseph S · CIK 0001972619 · VP, Eng & Utility Operations · NW Natural

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,358.6568

F1 · shares: Shares are issuable as a result of satisfaction of the performance threshold for 2023 under restricted stock unit awards. Organization and Executive Compensation Committee certification of the satisfaction of the performance threshold occurred on the transaction date.

F2 · balance_after: Includes 270 time-based RSUs granted under issuer's Long Term Incentive Plan. The RSUs vest in three installments: 108 shares on each of March 1, 2024 and 2025 and 54 shares on March 1, 2026.

SEC source: 0001733998-24-000033 · form4.xml · nonDerivative · entry 2

Williams Kathryn M · CIK 0001772924 · VP, Chief PA & Sustainability · NW Natural

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,930

F2 · shares: Shares are issuable as a result of satisfaction of performance goals for 2021-2023 under a performance share award. Organization and Executive Compensation Committee certification of the award payout level occurred on the transaction date.

F3 · balance_after: Includes 1,542 time-based restricted stock units (RSUs) granted under issuer's Long Term Incentive Plan. The RSUs vest in two installments: 514 shares on March 1, 2024 and 1,028 shares on March 1, 2025.

SEC source: 0001733998-24-000033 · form4.xml · nonDerivative · entry 1

Williams Kathryn M · CIK 0001772924 · VP, Chief PA & Sustainability · NW Natural

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,591

F1 · shares: Shares are issuable as a result of satisfaction of the performance threshold for 2023 under restricted stock unit awards. Organization and Executive Compensation Committee certification of the satisfaction of the performance threshold occurred on the transaction date.

F3 · balance_after: Includes 1,542 time-based restricted stock units (RSUs) granted under issuer's Long Term Incentive Plan. The RSUs vest in two installments: 514 shares on March 1, 2024 and 1,028 shares on March 1, 2025.

SEC source: 0001733998-24-000025 · form4.xml · nonDerivative · entry 4

Rogers Melinda B. · CIK 0001748944 · VP, Chief HR & Diversity Off. · NW Natural

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 6,160.785

F4 · shares: Shares are issuable as a result of satisfaction of performance goals for 2021-2023 under a performance share award, and credited to reporting person's account under Northwest Natural Gas Company's Deferred Compensation Plan for Directors and Executives pursuant to a prior election. Organization and Executive Compensation Committee certification of the award payout level occurred on the transaction date.

F6 · ownership.nature: Shares have been credited to reporting person's account under Northwest Natural Gas Company's Deferred Compensation Plan for Directors and Executives.

SEC source: 0001733998-24-000025 · form4.xml · nonDerivative · entry 3

Rogers Melinda B. · CIK 0001748944 · VP, Chief HR & Diversity Off. · NW Natural

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,942.13

F3 · shares: Shares are issuable as a result of satisfaction of performance goals for 2021-2023 under a performance share award. Organization and Executive Compensation Committee certification of the award payout level occurred on the transaction date.

F5 · balance_after: Includes 1,953 time-based restricted stock units granted under issuer's Long Term Incentive Plan. The restricted stock units vest in three equal installments on each of March 1, 2024, 2025 and 2026.

SEC source: 0001733998-24-000025 · form4.xml · nonDerivative · entry 2

Rogers Melinda B. · CIK 0001748944 · VP, Chief HR & Diversity Off. · NW Natural

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 4,954.785

F2 · shares: Shares are issuable as a result of satisfaction of the performance threshold for 2023 under restricted stock unit awards, and credited to reporting person's account under Northwest Natural Gas Company's Deferred Compensation Plan for Directors and Executives pursuant to a prior election. Organization and Executive Compensation Committee certification of the satisfaction of the performance threshold occurred on the transaction date.

F6 · ownership.nature: Shares have been credited to reporting person's account under Northwest Natural Gas Company's Deferred Compensation Plan for Directors and Executives.

SEC source: 0001733998-24-000025 · form4.xml · nonDerivative · entry 1

Rogers Melinda B. · CIK 0001748944 · VP, Chief HR & Diversity Off. · NW Natural

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,809.13

F1 · shares: Shares are issuable as a result of satisfaction of the performance threshold for 2023 under restricted stock unit awards. Organization and Executive Compensation Committee certification of the satisfaction of the performance threshold occurred on the transaction date.

F5 · balance_after: Includes 1,953 time-based restricted stock units granted under issuer's Long Term Incentive Plan. The restricted stock units vest in three equal installments on each of March 1, 2024, 2025 and 2026.

SEC source: 0001733998-24-000021 · form4.xml · nonDerivative · entry 1

Kravitz Zachary D · CIK 0001940844 · VP, Rates & Regulatory · NW Natural

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,633.4963

F1 · shares: Shares are issuable as a result of satisfaction of the performance threshold for 2023 under restricted stock unit awards. Organization and Executive Compensation Committee certification of the satisfaction of the performance threshold occurred on the transaction date.

F2 · balance_after: Includes 268 time-based RSUs granted under issuer's Long Term Incentive Plan. The RSUs vest in three installments: 104 shares on each of March 1, 2024 and 2025 and 60 shares on March 1, 2026.

SEC source: 0001733998-24-000004 · form4.xml · nonDerivative · entry 3

ANDERSON DAVID HUGO · CIK 0001241405 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 10,919.299

F3 · shares: Pursuant to the DCP and the reporting person's prior elections, shares were withheld to cover withholding taxes on the distribution of shares from the DCP.

F2 · ownership.nature: Reflects shares that have been credited to reporting person's account under the DCP.

SEC source: 0001733998-24-000004 · form4.xml · nonDerivative · entry 2

ANDERSON DAVID HUGO · CIK 0001241405 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 137,662

F1 · shares: Shares were distributed from reporting person's account under Northwest Natural Gas Company's Deferred Compensation Plan for Directors and Executives (DCP) to reporting person's brokerage account pursuant to reporting person's elections on November 18, 2014, December 2, 2015, December 7, 2016, and December 4, 2017.

SEC source: 0001733998-24-000004 · form4.xml · nonDerivative · entry 1

ANDERSON DAVID HUGO · CIK 0001241405 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 11,306.299

F1 · shares: Shares were distributed from reporting person's account under Northwest Natural Gas Company's Deferred Compensation Plan for Directors and Executives (DCP) to reporting person's brokerage account pursuant to reporting person's elections on November 18, 2014, December 2, 2015, December 7, 2016, and December 4, 2017.

F2 · ownership.nature: Reflects shares that have been credited to reporting person's account under the DCP.

SEC source: 0001733998-23-000077 · form4.xml · nonDerivative · entry 1

MCCURDY DAVID K · CIK 0001069010 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 3,770.174

F1 · kind: The reporting transaction was effected pursuant to a written election under the NW Natural Deferred Compensation Plan made on or about September 14, 2020. At the time made, the election was intended to satisfy the then-current Rule 10b5-1. The election has not been entered into, modified or terminated since the original election date.

F2 · ownership.nature: Shares have been credited to reporting person's account under the NW Natural Deferred Compensation Plan.

SEC source: 0001733998-23-000081 · form4.xml · nonDerivative · entry 1

PARTAIN NATHAN I · CIK 0001180965 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 3,369.127

F1 · kind: The reporting transaction was effected pursuant to a written election under the NW Natural Deferred Compensation Plan made on or about January 14, 2021. At the time made, the election was intended to satisfy the then-current Rule 10b5-1. The election has not been entered into, modified or terminated since the original election date.

F2 · ownership.nature: Shares have been credited to reporting person's account under the NW Natural Deferred Compensation Plan.

SEC source: 0001733998-23-000079 · form4.xml · nonDerivative · entry 1

McDonough Sandra · CIK 0001901349 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 4,123.077

F1 · kind: The reporting transaction was effected pursuant to a written election under the NW Natural Deferred Compensation Plan made on or about January 6, 2022. At the time made, the election was intended to satisfy the then-current Rule 10b5-1. The election has not been entered into, modified or terminated since the original election date.

F2 · ownership.nature: Shares have been credited to reporting person's account under the NW Natural Deferred Compensation Plan.

SEC source: 0001733998-23-000075 · form4.xml · nonDerivative · entry 1

Lee Karen · CIK 0001839510 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 9,268.412

F1 · kind: The reporting transaction was effected pursuant to a written election under the NW Natural Deferred Compensation Plan made on or about June 1, 2021. At the time made, the election was intended to satisfy the then-current Rule 10b5-1. The election has not been entered into, modified or terminated since the original election date.

F2 · ownership.nature: Shares have been credited to reporting person's account under the NW Natural Deferred Compensation Plan.

SEC source: 0001733998-23-000073 · form4.xml · nonDerivative · entry 1

Enand Monica · CIK 0001794296 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 13,674.426

F1 · kind: The reporting transaction was effected pursuant to a written election under the NW Natural Deferred Compensation Plan made on or about June 28, 2022. At the time made, the election was intended to satisfy the then-current Rule 10b5-1. The election has not been entered into, modified or terminated since the original election date.

F2 · ownership.nature: Shares have been credited to reporting person's account under the NW Natural Deferred Compensation Plan.

SEC source: 0001733998-23-000059 · form4.xml · nonDerivative · entry 1

Peverett Jane L · CIK 0001407314 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

SEC source: 0001733998-23-000051 · form4.xml · nonDerivative · entry 1

MCCURDY DAVID K · CIK 0001069010 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 3,378.303

F1 · kind: The reporting transaction was effected pursuant to a written election under the NW Natural Deferred Compensation Plan made on or about September 14, 2020. At the time made, the election was intended to satisfy the then-current Rule 10b5-1. The election has not been entered into, modified or terminated since the original election date.

F2 · ownership.nature: Shares have been credited to reporting person's account under the NW Natural Deferred Compensation Plan.

SEC source: 0001733998-23-000055 · form4.xml · nonDerivative · entry 1

PARTAIN NATHAN I · CIK 0001180965 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 3,109.366

F1 · kind: The reporting transaction was effected pursuant to a written election under the NW Natural Deferred Compensation Plan made on or about January 14, 2021. At the time made, the election was intended to satisfy the then-current Rule 10b5-1. The election has not been entered into, modified or terminated since the original election date.

F2 · ownership.nature: Shares have been credited to reporting person's account under the NW Natural Deferred Compensation Plan.

SEC source: 0001733998-23-000053 · form4.xml · nonDerivative · entry 1

McDonough Sandra · CIK 0001901349 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 3,429.913

F1 · kind: The reporting transaction was effected pursuant to a written election under the NW Natural Deferred Compensation Plan made on or about January 6, 2022. At the time made, the election was intended to satisfy the then-current Rule 10b5-1. The election has not been entered into, modified or terminated since the original election date.

F2 · ownership.nature: Shares have been credited to reporting person's account under the NW Natural Deferred Compensation Plan.

SEC source: 0001733998-23-000049 · form4.xml · nonDerivative · entry 1

Lee Karen · CIK 0001839510 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 8,016.245

F1 · kind: The reporting transaction was effected pursuant to a written election under the NW Natural Deferred Compensation Plan made on or about June 1, 2021. At the time made, the election was intended to satisfy the then-current Rule 10b5-1. The election has not been entered into, modified or terminated since the original election date.

F2 · ownership.nature: Shares have been credited to reporting person's account under the NW Natural Deferred Compensation Plan.

SEC source: 0001733998-23-000047 · form4.xml · nonDerivative · entry 1

Enand Monica · CIK 0001794296 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 12,050.706

F1 · kind: The reporting transaction was effected pursuant to a written election under the NW Natural Deferred Compensation Plan made on or about June 28, 2022. At the time made, the election was intended to satisfy the then-current Rule 10b5-1. The election has not been entered into, modified or terminated since the original election date.

F2 · ownership.nature: Shares have been credited to reporting person's account under the NW Natural Deferred Compensation Plan.

SEC source: 0001733998-23-000032 · form4.xml · nonDerivative · entry 1

Weber David A. · CIK 0001538965 · VP, Gas Supply · NW Natural

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 186.289

F1 · price: This transaction was executed in multiple trades on reported date with prices ranging from $44.32 to $44.44, resulting in a weighted average price of $44.375. Northwest Natural Holding Company (Issuer) will provide upon request by the Commission staff or a security holder of the Issuer full information regarding the number of shares sold at each separate price.

SEC source: 0001733998-23-000022 · form4.xml · nonDerivative · entry 1

MCCURDY DAVID K · CIK 0001069010 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · See Footnote

Disclosed balance after: 3,014.983

F1 · kind: The reported transaction was effected pursuant to a written election under the NW Natural Deferred Compensation Plan made on or about September 14, 2020 which election constitutes a Rule 10b5-1 trading plan.

F2 · ownership.nature: Shares have been credited to reporting person's account under the NW Natural Deferred Compensation Plan.