ANDERSON DAVID HUGO

SEC source: 0001241405-26-000008 · primarydocument.xml · derivative · entry 4

ANDERSON DAVID HUGO · CIK 0001241405 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 19,939

Underlying: Common Stock · 577 shares

Expires not disclosed

F4 · security: Acquired through quarterly grant under the National Fuel Gas Company 2009 Non-Employee Director Equity Compensation Plan, and deferred pursuant to the reporting person's election under the National Fuel Gas Company Deferred Compensation Plan for Directors and Officers.

F3 · derivative.exercise_price: Each deferred stock unit is the economic equivalent of one share of common stock. The deferred stock units become payable, in shares of common stock, after the reporting person's termination of service as a director, pursuant to the reporting person's distribution election under the National Fuel Gas Company Deferred Compensation Plan for Directors and Officers.

F3 · derivative.exercise_date: Each deferred stock unit is the economic equivalent of one share of common stock. The deferred stock units become payable, in shares of common stock, after the reporting person's termination of service as a director, pursuant to the reporting person's distribution election under the National Fuel Gas Company Deferred Compensation Plan for Directors and Officers.

F3 · derivative.expiration_date: Each deferred stock unit is the economic equivalent of one share of common stock. The deferred stock units become payable, in shares of common stock, after the reporting person's termination of service as a director, pursuant to the reporting person's distribution election under the National Fuel Gas Company Deferred Compensation Plan for Directors and Officers.

SEC source: 0001733998-26-000143 · form4.xml · nonDerivative · entry 1

ANDERSON DAVID HUGO · CIK 0001241405 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 49,259

F1 · kind: Transaction made pursuant to a Rule 10b5-1 trading plan established by the reporting person on March 27, 2026. As previously disclosed, Mr. Anderson retired from his position as CEO of NW Holdings and NW Natural, effective April 1, 2025. At the time the 10b5-1 Plan was established, Mr. Anderson held more than 7 times the then-current $450,000 stock ownership requirements for non-management directors. This trading arrangement allows Mr. Anderson to periodically sell a portion of his NW Holdings common stock to diversify his holdings in connection with his retirement.

F2 · price: This transaction was executed in multiple trades on reported date with prices ranging from $47.9550 to $48.2100, resulting in a weighted average price of $48.0259. 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: 0001733998-26-000135 · form4.xml · nonDerivative · entry 1

ANDERSON DAVID HUGO · CIK 0001241405 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 50,759

F1 · kind: Transaction made pursuant to a Rule 10b5-1 trading plan established by the reporting person on March 27, 2026. As previously disclosed, Mr. Anderson retired from his position as CEO of NW Holdings and NW Natural, effective April 1, 2025. At the time the 10b5-1 Plan was established, Mr. Anderson held more than 7 times the $500,000 stock ownership requirements for non-management directors. This trading arrangement allows Mr. Anderson to periodically sell a portion of his NW Holdings common stock to diversify his holdings in connection with his retirement.

F2 · price: This transaction was executed in multiple trades on reported date with prices ranging from $50.5900 to $51.0650, resulting in a weighted average price of $50.8625. 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: 0001733998-26-000121 · form4.xml · nonDerivative · entry 1

ANDERSON DAVID HUGO · CIK 0001241405 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 52,259

F1 · kind: Transaction made pursuant to a Rule 10b5-1 trading plan established by the reporting person on March 27, 2026. As previously disclosed, Mr. Anderson retired from his position as CEO of NW Holdings and NW Natural, effective April 1, 2025. At the time the 10b5-1 Plan was established, Mr. Anderson held more than 7 times the $450,000 stock ownership requirements for non-management directors. This trading arrangement allows Mr. Anderson to periodically sell a portion of his NW Holdings common stock to diversify his holdings in connection with his retirement.

F2 · price: This transaction was executed in multiple trades on reported date with prices ranging from $51.01 to $51.46, resulting in a weighted average price of $51.1834. 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: 0001241405-26-000008 · primarydocument.xml · derivative · entry 3

ANDERSON DAVID HUGO · CIK 0001241405 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 19,362

Underlying: Common Stock · 129 shares

Expires not disclosed

F2 · security: Acquired through dividend reinvestment feature of the National Fuel Gas Company Deferred Compensation Plan for Directors and Officers, exempt under Rule 16a-11.

F3 · derivative.exercise_price: Each deferred stock unit is the economic equivalent of one share of common stock. The deferred stock units become payable, in shares of common stock, after the reporting person's termination of service as a director, pursuant to the reporting person's distribution election under the National Fuel Gas Company Deferred Compensation Plan for Directors and Officers.

F3 · derivative.exercise_date: Each deferred stock unit is the economic equivalent of one share of common stock. The deferred stock units become payable, in shares of common stock, after the reporting person's termination of service as a director, pursuant to the reporting person's distribution election under the National Fuel Gas Company Deferred Compensation Plan for Directors and Officers.

F3 · derivative.expiration_date: Each deferred stock unit is the economic equivalent of one share of common stock. The deferred stock units become payable, in shares of common stock, after the reporting person's termination of service as a director, pursuant to the reporting person's distribution election under the National Fuel Gas Company Deferred Compensation Plan for Directors and Officers.

SEC source: 0001241405-26-000008 · primarydocument.xml · nonDerivative · entry 2

ANDERSON DAVID HUGO · CIK 0001241405 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Anderson Family Trust

Disclosed balance after: 222

F1 · security: Acquired through dividend reinvestment plan, exempt under Rule 16a-11.

SEC source: 0001241405-26-000006 · primarydocument.xml · derivative · entry 4

ANDERSON DAVID HUGO · CIK 0001241405 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 19,233

Underlying: Common Stock · 564 shares

Expires not disclosed

F4 · security: Acquired through quarterly grant under the National Fuel Gas Company 2009 Non-Employee Director Equity Compensation Plan, and deferred pursuant to the reporting person's election under the National Fuel Gas Company Deferred Compensation Plan for Directors and Officers.

F3 · derivative.exercise_price: Each deferred stock unit is the economic equivalent of one share of common stock. The deferred stock units become payable, in shares of common stock, after the reporting person's termination of service as a director, pursuant to the reporting person's distribution election under the National Fuel Gas Company Deferred Compensation Plan for Directors and Officers.

F3 · derivative.exercise_date: Each deferred stock unit is the economic equivalent of one share of common stock. The deferred stock units become payable, in shares of common stock, after the reporting person's termination of service as a director, pursuant to the reporting person's distribution election under the National Fuel Gas Company Deferred Compensation Plan for Directors and Officers.

F3 · derivative.expiration_date: Each deferred stock unit is the economic equivalent of one share of common stock. The deferred stock units become payable, in shares of common stock, after the reporting person's termination of service as a director, pursuant to the reporting person's distribution election under the National Fuel Gas Company Deferred Compensation Plan for Directors and Officers.

SEC source: 0001733998-26-000119 · form4.xml · nonDerivative · entry 1

ANDERSON DAVID HUGO · CIK 0001241405 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 53,759

F1 · kind: Transaction made pursuant to a Rule 10b5-1 trading plan established by the reporting person on March 27, 2026. As previously disclosed, Mr. Anderson retired from his position as CEO of NW Holdings and NW Natural, effective April 1, 2025. At the time the 10b5-1 Plan was established, Mr. Anderson held more than 7 times the $450,000 stock ownership requirements for non-management directors. This trading arrangement allows Mr. Anderson to periodically sell a portion of his NW Holdings common stock to diversify his holdings in connection with his retirement.

F2 · price: This transaction was executed in multiple trades on reported date with prices ranging from $50.78 to $51.15, resulting in a weighted average price of $50.9006. 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: 0001241405-26-000006 · primarydocument.xml · derivative · entry 3

ANDERSON DAVID HUGO · CIK 0001241405 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,669

Underlying: Common Stock · 108 shares

Expires not disclosed

F2 · security: Acquired through dividend reinvestment feature of the National Fuel Gas Company Deferred Compensation Plan for Directors and Officers, exempt under Rule 16a-11.

F3 · derivative.exercise_price: Each deferred stock unit is the economic equivalent of one share of common stock. The deferred stock units become payable, in shares of common stock, after the reporting person's termination of service as a director, pursuant to the reporting person's distribution election under the National Fuel Gas Company Deferred Compensation Plan for Directors and Officers.

F3 · derivative.exercise_date: Each deferred stock unit is the economic equivalent of one share of common stock. The deferred stock units become payable, in shares of common stock, after the reporting person's termination of service as a director, pursuant to the reporting person's distribution election under the National Fuel Gas Company Deferred Compensation Plan for Directors and Officers.

F3 · derivative.expiration_date: Each deferred stock unit is the economic equivalent of one share of common stock. The deferred stock units become payable, in shares of common stock, after the reporting person's termination of service as a director, pursuant to the reporting person's distribution election under the National Fuel Gas Company Deferred Compensation Plan for Directors and Officers.

SEC source: 0001241405-26-000006 · primarydocument.xml · nonDerivative · entry 2

ANDERSON DAVID HUGO · CIK 0001241405 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Anderson Family Trust

Disclosed balance after: 221

F1 · security: Acquired through dividend reinvestment plan, exempt under Rule 16a-11.

SEC source: 0001241405-26-000004 · primarydocument.xml · derivative · entry 4

ANDERSON DAVID HUGO · CIK 0001241405 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,561

Underlying: Common Stock · 469 shares

Expires not disclosed

F4 · security: Acquired through quarterly grant under the National Fuel Gas Company 2009 Non-Employee Director Equity Compensation Plan, and deferred pursuant to the reporting person's election under the National Fuel Gas Company Deferred Compensation Plan for Directors and Officers.

F3 · derivative.exercise_price: Each deferred stock unit is the economic equivalent of one share of common stock. The deferred stock units become payable, in shares of common stock, after the reporting person's termination of service as a director, pursuant to the reporting person's distribution election under the National Fuel Gas Company Deferred Compensation Plan for Directors and Officers.

F3 · derivative.exercise_date: Each deferred stock unit is the economic equivalent of one share of common stock. The deferred stock units become payable, in shares of common stock, after the reporting person's termination of service as a director, pursuant to the reporting person's distribution election under the National Fuel Gas Company Deferred Compensation Plan for Directors and Officers.

F3 · derivative.expiration_date: Each deferred stock unit is the economic equivalent of one share of common stock. The deferred stock units become payable, in shares of common stock, after the reporting person's termination of service as a director, pursuant to the reporting person's distribution election under the National Fuel Gas Company Deferred Compensation Plan for Directors and Officers.

SEC source: 0001733998-26-000056 · form4.xml · nonDerivative · entry 2

ANDERSON DAVID HUGO · CIK 0001241405 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 55,259

F2 · shares: 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.

SEC source: 0001733998-26-000056 · form4.xml · nonDerivative · entry 1

ANDERSON DAVID HUGO · CIK 0001241405 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 61,103

F1 · shares: 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.

SEC source: 0001733998-26-000022 · form4.xml · nonDerivative · entry 2

ANDERSON DAVID HUGO · CIK 0001241405 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 64,850

F2 · shares: Shares are issuable as a result of satisfaction of performance goals for 2023-2025 under a performance share award. Organization and Executive Compensation Committee certification of the award payout level occurred on the transaction date.

SEC source: 0001733998-26-000022 · form4.xml · nonDerivative · entry 1

ANDERSON DAVID HUGO · CIK 0001241405 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 47,181

F1 · shares: 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.

SEC source: 0001733998-26-000002 · form4.xml · nonDerivative · entry 3

ANDERSON DAVID HUGO · CIK 0001241405 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 8,800.689

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: 0001733998-26-000002 · form4.xml · nonDerivative · entry 2

ANDERSON DAVID HUGO · CIK 0001241405 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 38,220

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 December 10, 2013, November 18, 2014, December 2, 2015, December 7, 2016 and December 4, 2017.

SEC source: 0001733998-26-000002 · form4.xml · nonDerivative · entry 1

ANDERSON DAVID HUGO · CIK 0001241405 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 9,346.689

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 December 10, 2013, 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: 0001241405-26-000004 · primarydocument.xml · derivative · entry 3

ANDERSON DAVID HUGO · CIK 0001241405 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,092

Underlying: Common Stock · 115 shares

Expires not disclosed

F2 · security: Acquired through dividend reinvestment feature of the National Fuel Gas Company Deferred Compensation Plan for Directors and Officers, exempt under Rule 16a-11.

F3 · derivative.exercise_price: Each deferred stock unit is the economic equivalent of one share of common stock. The deferred stock units become payable, in shares of common stock, after the reporting person's termination of service as a director, pursuant to the reporting person's distribution election under the National Fuel Gas Company Deferred Compensation Plan for Directors and Officers.

F3 · derivative.exercise_date: Each deferred stock unit is the economic equivalent of one share of common stock. The deferred stock units become payable, in shares of common stock, after the reporting person's termination of service as a director, pursuant to the reporting person's distribution election under the National Fuel Gas Company Deferred Compensation Plan for Directors and Officers.

F3 · derivative.expiration_date: Each deferred stock unit is the economic equivalent of one share of common stock. The deferred stock units become payable, in shares of common stock, after the reporting person's termination of service as a director, pursuant to the reporting person's distribution election under the National Fuel Gas Company Deferred Compensation Plan for Directors and Officers.

SEC source: 0001241405-26-000004 · primarydocument.xml · nonDerivative · entry 2

ANDERSON DAVID HUGO · CIK 0001241405 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Anderson Family Trust

Disclosed balance after: 219

F1 · security: Acquired through dividend reinvestment plan, exempt under Rule 16a-11.

SEC source: 0001241405-26-000002 · primarydocument.xml · derivative · entry 4

ANDERSON DAVID HUGO · CIK 0001241405 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,977

Underlying: Common Stock · 541 shares

Expires not disclosed

F4 · security: Acquired through quarterly grant under the National Fuel Gas Company 2009 Non-Employee Director Equity Compensation Plan, and deferred pursuant to the reporting person's election under the National Fuel Gas Company Deferred Compensation Plan for Directors and Officers.

F3 · derivative.exercise_price: Each deferred stock unit is the economic equivalent of one share of common stock. The deferred stock units become payable, in shares of common stock, after the reporting person's termination of service as a director, pursuant to the reporting person's distribution election under the National Fuel Gas Company Deferred Compensation Plan for Directors and Officers.

F3 · derivative.exercise_date: Each deferred stock unit is the economic equivalent of one share of common stock. The deferred stock units become payable, in shares of common stock, after the reporting person's termination of service as a director, pursuant to the reporting person's distribution election under the National Fuel Gas Company Deferred Compensation Plan for Directors and Officers.

F3 · derivative.expiration_date: Each deferred stock unit is the economic equivalent of one share of common stock. The deferred stock units become payable, in shares of common stock, after the reporting person's termination of service as a director, pursuant to the reporting person's distribution election under the National Fuel Gas Company Deferred Compensation Plan for Directors and Officers.

SEC source: 0001733998-25-000187 · form4.xml · nonDerivative · entry 1

ANDERSON DAVID HUGO · CIK 0001241405 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 36,954

F1 · kind: Transaction made pursuant to a Rule 10b5-1 trading plan established by the reporting person on September 16, 2024. As previously disclosed, Mr. Anderson retired from his position as CEO of NW Holdings and NW Natural, effective April 1, 2025. At the time the 10b5-1 Plan was established, Mr. Anderson held more than 8 times his annual salary in NW Holdings' stock; an amount greater than required by the NW Holdings' stock ownership requirements. This trading arrangement allows Mr. Anderson to periodically sell a portion of his NW Holdings common stock to diversify his holdings in connection with his retirement. As of the date of this filing, Mr. Anderson holds the following shares that are not subject to his trading arrangement: 47,567 shares of which 10,613 are held in Northwest Natural Gas Company's Deferred Compensation Plan for Directors and Officers and 36,954 are held in his trust.

F2 · price: This transaction was executed in multiple trades on reported date with prices ranging from $47.74 to $48.1650, resulting in a weighted average price of $47.9490. 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: 0001733998-25-000170 · form4.xml · nonDerivative · entry 1

ANDERSON DAVID HUGO · CIK 0001241405 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 44,422

F1 · kind: Transaction made pursuant to a Rule 10b5-1 trading plan established by the reporting person on September 16, 2024. As previously disclosed, Mr. Anderson retired from his position as CEO of NW Holdings and NW Natural, effective April 1, 2025. At the time the 10b5-1 Plan was established, Mr. Anderson held more than 8 times his annual salary in NW Holdings' stock; an amount greater than required by the NW Holdings' stock ownership requirements. This trading arrangement allows Mr. Anderson to periodically sell a portion of his NW Holdings common stock to diversify his holdings in connection with his retirement. As of the date of this filing, Mr. Anderson holds the following shares that are not subject to his trading arrangement: 47,459 shares of which 10,505 are held in Northwest Natural Gas Company's Deferred Compensation Plan for Directors and Officers and 36,954 are held in his trust.

F2 · price: This transaction was executed in multiple trades on reported date with prices ranging from $46.08 to $46.65, resulting in a weighted average price of $46.3935. 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: 0001733998-25-000168 · form4.xml · nonDerivative · entry 1

ANDERSON DAVID HUGO · CIK 0001241405 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 51,922

F1 · kind: Transaction made pursuant to a Rule 10b5-1 trading plan established by the reporting person on September 16, 2024. As previously disclosed, Mr. Anderson retired from his position as CEO of NW Holdings and NW Natural, effective April 1, 2025. At the time the 10b5-1 Plan was established, Mr. Anderson held more than 8 times his annual salary in NW Holdings' stock; an amount greater than required by the NW Holdings' stock ownership requirements. This trading arrangement allows Mr. Anderson to periodically sell a portion of his NW Holdings common stock to diversify his holdings in connection with his retirement. As of the date of this filing, Mr. Anderson holds the following shares that are not subject to his trading arrangement: 47,459 shares of which 10,505 are held in Northwest Natural Gas Company's Deferred Compensation Plan for Directors and Officers and 36,954 are held in his trust.

F2 · price: This transaction was executed in multiple trades on reported date with prices ranging from $45.00 to $45.02, resulting in a weighted average price of $45.0007. 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: 0001241405-26-000002 · primarydocument.xml · derivative · entry 3

ANDERSON DAVID HUGO · CIK 0001241405 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,436

Underlying: Common Stock · 105 shares

Expires not disclosed

F2 · security: Acquired through dividend reinvestment feature of the National Fuel Gas Company Deferred Compensation Plan for Directors and Officers, exempt under Rule 16a-11.

F3 · derivative.exercise_price: Each deferred stock unit is the economic equivalent of one share of common stock. The deferred stock units become payable, in shares of common stock, after the reporting person's termination of service as a director, pursuant to the reporting person's distribution election under the National Fuel Gas Company Deferred Compensation Plan for Directors and Officers.

F3 · derivative.exercise_date: Each deferred stock unit is the economic equivalent of one share of common stock. The deferred stock units become payable, in shares of common stock, after the reporting person's termination of service as a director, pursuant to the reporting person's distribution election under the National Fuel Gas Company Deferred Compensation Plan for Directors and Officers.

F3 · derivative.expiration_date: Each deferred stock unit is the economic equivalent of one share of common stock. The deferred stock units become payable, in shares of common stock, after the reporting person's termination of service as a director, pursuant to the reporting person's distribution election under the National Fuel Gas Company Deferred Compensation Plan for Directors and Officers.

SEC source: 0001241405-26-000002 · primarydocument.xml · nonDerivative · entry 2

ANDERSON DAVID HUGO · CIK 0001241405 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Anderson Family Trust

Disclosed balance after: 218

F1 · security: Acquired through dividend reinvestment plan, exempt under Rule 16a-11.

SEC source: 0001733998-25-000166 · form4.xml · nonDerivative · entry 1

ANDERSON DAVID HUGO · CIK 0001241405 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 62,431

F1 · kind: Transaction made pursuant to a Rule 10b5-1 trading plan established by the reporting person on September 16, 2024. As previously disclosed, Mr. Anderson retired from his position as CEO of NW Holdings and NW Natural, effective April 1, 2025. At the time the 10b5-1 Plan was established, Mr. Anderson held more than 8 times his annual salary in NW Holdings' stock; an amount greater than required by the NW Holdings' stock ownership requirements. This trading arrangement allows Mr. Anderson to periodically sell a portion of his NW Holdings common stock to diversify his holdings in connection with his retirement. As of the date of this filing, Mr. Anderson holds the following shares that are not subject to his trading arrangement: 47,459 shares of which 10,505 are held in Northwest Natural Gas Company's Deferred Compensation Plan for Directors and Officers and 36,954 are held in his trust.

SEC source: 0001241405-25-000005 · primarydocument.xml · derivative · entry 4

ANDERSON DAVID HUGO · CIK 0001241405 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,331

Underlying: Common Stock · 471 shares

Expires not disclosed

F4 · security: Acquired through quarterly grant under the National Fuel Gas Company 2009 Non-Employee Director Equity Compensation Plan, and deferred pursuant to the reporting person's election under the National Fuel Gas Company Deferred Compensation Plan for Directors and Officers.

F3 · derivative.exercise_price: Each deferred stock unit is the economic equivalent of one share of common stock. The deferred stock units become payable, in shares of common stock, after the reporting person's termination of service as a director, pursuant to the reporting person's distribution election under the National Fuel Gas Company Deferred Compensation Plan for Directors and Officers.

F3 · derivative.exercise_date: Each deferred stock unit is the economic equivalent of one share of common stock. The deferred stock units become payable, in shares of common stock, after the reporting person's termination of service as a director, pursuant to the reporting person's distribution election under the National Fuel Gas Company Deferred Compensation Plan for Directors and Officers.

F3 · derivative.expiration_date: Each deferred stock unit is the economic equivalent of one share of common stock. The deferred stock units become payable, in shares of common stock, after the reporting person's termination of service as a director, pursuant to the reporting person's distribution election under the National Fuel Gas Company Deferred Compensation Plan for Directors and Officers.

SEC source: 0001733998-25-000158 · form4.xml · nonDerivative · entry 2

ANDERSON DAVID HUGO · CIK 0001241405 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 67,361

F1 · kind: Transaction made pursuant to a Rule 10b5-1 trading plan established by the reporting person on September 16, 2024. As previously disclosed, Mr. Anderson retired from his position as CEO of NW Holdings and NW Natural, effective April 1, 2025. At the time the 10b5-1 Plan was established, Mr. Anderson held more than 8 times his annual salary in NW Holdings' stock; an amount greater than required by the NW Holdings' stock ownership requirements. This trading arrangement allows Mr. Anderson to periodically sell a portion of his NW Holdings common stock to diversify his holdings in connection with his retirement. As of the date of this filing, Mr. Anderson holds the following shares that are not subject to his trading arrangement: 47,459 shares of which 10,505 are held in Northwest Natural Gas Company's Deferred Compensation Plan for Directors and Officers and 36,954 are held in his trust.

SEC source: 0001733998-25-000158 · form4.xml · nonDerivative · entry 1

ANDERSON DAVID HUGO · CIK 0001241405 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 67,689

F1 · kind: Transaction made pursuant to a Rule 10b5-1 trading plan established by the reporting person on September 16, 2024. As previously disclosed, Mr. Anderson retired from his position as CEO of NW Holdings and NW Natural, effective April 1, 2025. At the time the 10b5-1 Plan was established, Mr. Anderson held more than 8 times his annual salary in NW Holdings' stock; an amount greater than required by the NW Holdings' stock ownership requirements. This trading arrangement allows Mr. Anderson to periodically sell a portion of his NW Holdings common stock to diversify his holdings in connection with his retirement. As of the date of this filing, Mr. Anderson holds the following shares that are not subject to his trading arrangement: 47,459 shares of which 10,505 are held in Northwest Natural Gas Company's Deferred Compensation Plan for Directors and Officers and 36,954 are held in his trust.

F2 · price: This transaction was executed in multiple trades on reported date with prices ranging from $45.0000 to $45.0300, resulting in a weighted average price of $45.0077. 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: 0001733998-25-000156 · form4.xml · nonDerivative · entry 1

ANDERSON DAVID HUGO · CIK 0001241405 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 71,922

F1 · kind: Transaction made pursuant to a Rule 10b5-1 trading plan established by the reporting person on September 16, 2024. As previously disclosed, Mr. Anderson retired from his position as CEO of NW Holdings and NW Natural, effective April 1, 2025. At the time the 10b5-1 Plan was established, Mr. Anderson held more than 8 times his annual salary in NW Holdings' stock; an amount greater than required by the NW Holdings' stock ownership requirements. This trading arrangement allows Mr. Anderson to periodically sell a portion of his NW Holdings common stock to diversify his holdings in connection with his retirement. As of the date of this filing, Mr. Anderson holds the following shares that are not subject to his trading arrangement: 47,459 shares of which 10,505 are held in Northwest Natural Gas Company's Deferred Compensation Plan for Directors and Officers and 36,954 are held in his trust.

F2 · price: This transaction was executed in multiple trades on reported date with prices ranging from $41.65 to $42.61, resulting in a weighted average price of $42.1339. 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: 0001733998-25-000140 · form4.xml · nonDerivative · entry 1

ANDERSON DAVID HUGO · CIK 0001241405 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 79,717

F1 · kind: Transaction made pursuant to a Rule 10b5-1 trading plan established by the reporting person on September 16, 2024. As previously disclosed, Mr. Anderson retired from his position as CEO of NW Holdings and NW Natural, effective April 1, 2025. At the time the 10b5-1 Plan was established, Mr. Anderson held more than 8 times his annual salary in NW Holdings' stock; an amount greater than required by the NW Holdings' stock ownership requirements. This trading arrangement allows Mr. Anderson to periodically sell a portion of his NW Holdings' common stock to diversify his holdings in connection with his retirement. As of the date of this filing, Mr. Anderson holds the following shares that are not subject to his trading arrangement: 47,459 shares of which 10,505 are held in Northwest Natural Gas Company's Deferred Compensation Plan for Directors and Officers and 36,954 are held in his trust.

F2 · price: This transaction was executed in multiple trades on reported date with prices ranging from $40.16 to $40.57, resulting in a weighted average price of $40.4293. 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: 0001733998-25-000121 · form4.xml · nonDerivative · entry 1

ANDERSON DAVID HUGO · CIK 0001241405 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 87,291

F1 · kind: Transaction made pursuant to a Rule 10b5-1 trading plan established by the reporting person on September 16, 2024. As previously disclosed, Mr. Anderson retired from his position as CEO of NW Holdings and NW Natural, effective April 1, 2025. At the time the 10b5-1 Plan was established, Mr. Anderson held more than 8 times his annual salary in NW Holdings' stock; an amount greater than required by the NW Holdings' stock ownership requirements. This trading arrangement allows Mr. Anderson to periodically sell a portion of his NW Holdings common stock to diversify his holdings in connection with his retirement. As of the date of this filing, Mr. Anderson holds the following shares that are not subject to his trading arrangement: 47,333 shares of which 10,379 are held in Northwest Natural Gas Company's Deferred Compensation Plan for Directors and Officers and 36,954 are held in his trust.

F2 · price: This transaction was executed in multiple trades on reported date with prices ranging from $41.63 to $42.30, resulting in a weighted average price of $41.9558. 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: 0001241405-25-000005 · primarydocument.xml · derivative · entry 3

ANDERSON DAVID HUGO · CIK 0001241405 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,860

Underlying: Common Stock · 98 shares

Expires not disclosed

F2 · security: Acquired through dividend reinvestment feature of the National Fuel Gas Company Deferred Compensation Plan for Directors and Officers, exempt under Rule 16a-11.

F3 · derivative.exercise_price: Each deferred stock unit is the economic equivalent of one share of common stock. The deferred stock units become payable, in shares of common stock, after the reporting person's termination of service as a director, pursuant to the reporting person's distribution election under the National Fuel Gas Company Deferred Compensation Plan for Directors and Officers.

F3 · derivative.exercise_date: Each deferred stock unit is the economic equivalent of one share of common stock. The deferred stock units become payable, in shares of common stock, after the reporting person's termination of service as a director, pursuant to the reporting person's distribution election under the National Fuel Gas Company Deferred Compensation Plan for Directors and Officers.

F3 · derivative.expiration_date: Each deferred stock unit is the economic equivalent of one share of common stock. The deferred stock units become payable, in shares of common stock, after the reporting person's termination of service as a director, pursuant to the reporting person's distribution election under the National Fuel Gas Company Deferred Compensation Plan for Directors and Officers.

SEC source: 0001241405-25-000005 · primarydocument.xml · nonDerivative · entry 2

ANDERSON DAVID HUGO · CIK 0001241405 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Anderson Family Trust

Disclosed balance after: 216

F1 · security: Acquired through dividend reinvestment plan, exempt under Rule 16a-11.

SEC source: 0001562180-25-005309 · primarydocument.xml · derivative · entry 4

ANDERSON DAVID HUGO · CIK 0001241405 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,762

Underlying: Common Stock · 518 shares

Expires not disclosed

F4 · security: Acquired through quarterly grant under the National Fuel Gas Company 2009 Non-Employee Director Equity Compensation Plan, and deferred pursuant to the reporting person's election under the National Fuel Gas Company Deferred Compensation Plan for Directors and Officers.

F3 · derivative.exercise_price: Each deferred stock unit is the economic equivalent of one share of common stock. The deferred stock units become payable, in shares of common stock, after the reporting person's termination of service as a director, pursuant to the reporting person's distribution election under the National Fuel Gas Company Deferred Compensation Plan for Directors and Officers.

F3 · derivative.exercise_date: Each deferred stock unit is the economic equivalent of one share of common stock. The deferred stock units become payable, in shares of common stock, after the reporting person's termination of service as a director, pursuant to the reporting person's distribution election under the National Fuel Gas Company Deferred Compensation Plan for Directors and Officers.

F3 · derivative.expiration_date: Each deferred stock unit is the economic equivalent of one share of common stock. The deferred stock units become payable, in shares of common stock, after the reporting person's termination of service as a director, pursuant to the reporting person's distribution election under the National Fuel Gas Company Deferred Compensation Plan for Directors and Officers.

SEC source: 0001733998-25-000113 · form4.xml · nonDerivative · entry 1

ANDERSON DAVID HUGO · CIK 0001241405 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 94,791

F1 · kind: Transaction made pursuant to a Rule 10b5-1 trading plan established by the reporting person on September 16, 2024. As previously disclosed, Mr. Anderson retired from his position as CEO of NW Holdings and NW Natural, effective April 1, 2025. At the time the 10b5-1 Plan was established, Mr. Anderson held more than 8 times his annual salary in NW Holdings' stock; an amount greater than required by the NW Holdings' stock ownership requirements. This trading arrangement allows Mr. Anderson to periodically sell a portion of his NW Holdings common stock to diversify his holdings in connection with his retirement. As of the date of this filing, Mr. Anderson holds the following shares that are not subject to his trading arrangement: 47,333 shares of which 10,379 are held in Northwest Natural Gas Company's Deferred Compensation Plan for Directors and Officers and 36,954 are held in his trust.

F2 · price: This transaction was executed in multiple trades on reported date with prices ranging from $39.475 to $39.91, resulting in a weighted average price of $39.6815. 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: 0001733998-25-000106 · form4.xml · nonDerivative · entry 1

ANDERSON DAVID HUGO · CIK 0001241405 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 102,291

F1 · kind: Transaction made pursuant to a Rule 10b5-1 trading plan established by the reporting person on September 16, 2024. As previously disclosed, Mr. Anderson retired from his position as CEO of NW Holdings and NW Natural, effective April 1, 2025. At the time the 10b5-1 Plan was established, Mr. Anderson held more than 8 times his annual salary in NW Holdings' stock; an amount greater than required by the NW Holdings' stock ownership requirements. This trading arrangement allows Mr. Anderson to periodically sell a portion of his NW Holdings common stock to diversify his holdings in connection with his retirement. As of the date of this filing, Mr. Anderson holds the following shares that are not subject to his trading arrangement: 47,333 shares of which 10,379 are held in Northwest Natural Gas Company's Deferred Compensation Plan for Directors and Officers and 36,954 are held in his trust.

F2 · price: This transaction was executed in multiple trades on reported date with prices ranging from $40.79 to $41.72, resulting in a weighted average price of $40.9927. 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: 0001733998-25-000088 · form4.xml · nonDerivative · entry 1

ANDERSON DAVID HUGO · CIK 0001241405 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 109,882

F1 · kind: Transaction made pursuant to a Rule 10b5-1 trading plan established by the reporting person on September 16, 2024. As previously disclosed, Mr. Anderson retired from his position as CEO of NW Holdings and NW Natural, effective April 1, 2025. At the time the 10b5-1 Plan was established, Mr. Anderson held more than 8 times his annual salary in NW Holdings' stock; an amount greater than required by the NW Holdings' stock ownership requirements. This trading arrangement allows Mr. Anderson to periodically sell a portion of his NW Holdings common stock to diversify his holdings in connection with his retirement. As of the date of this filing, Mr. Anderson holds the following shares that are not subject to his trading arrangement: 47,210 shares of which 10,256 are held in Northwest Natural Gas Company's Deferred Compensation Plan for Directors and Officers and 36,954 are held in his trust.

F2 · price: This transaction was executed in multiple trades on reported date with prices ranging from $42.77 to $43.25, resulting in a weighted average price of $43.0007. 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: 0001562180-25-005309 · primarydocument.xml · derivative · entry 3

ANDERSON DAVID HUGO · CIK 0001241405 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,244

Underlying: Common Stock · 103 shares

Expires not disclosed

F2 · security: Acquired through dividend reinvestment feature of the National Fuel Gas Company Deferred Compensation Plan for Directors and Officers, exempt under Rule 16a-11.

F3 · derivative.exercise_price: Each deferred stock unit is the economic equivalent of one share of common stock. The deferred stock units become payable, in shares of common stock, after the reporting person's termination of service as a director, pursuant to the reporting person's distribution election under the National Fuel Gas Company Deferred Compensation Plan for Directors and Officers.

F3 · derivative.exercise_date: Each deferred stock unit is the economic equivalent of one share of common stock. The deferred stock units become payable, in shares of common stock, after the reporting person's termination of service as a director, pursuant to the reporting person's distribution election under the National Fuel Gas Company Deferred Compensation Plan for Directors and Officers.

F3 · derivative.expiration_date: Each deferred stock unit is the economic equivalent of one share of common stock. The deferred stock units become payable, in shares of common stock, after the reporting person's termination of service as a director, pursuant to the reporting person's distribution election under the National Fuel Gas Company Deferred Compensation Plan for Directors and Officers.

SEC source: 0001562180-25-005309 · primarydocument.xml · nonDerivative · entry 2

ANDERSON DAVID HUGO · CIK 0001241405 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Anderson Family Trust

Disclosed balance after: 215

F1 · security: Acquired through dividend reinvestment plan, exempt under Rule 16a-11.

SEC source: 0001562180-25-002960 · primarydocument.xml · derivative · entry 4

ANDERSON DAVID HUGO · CIK 0001241405 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,141

Underlying: Common Stock · 552 shares

Expires not disclosed

F4 · security: Acquired through quarterly grant under the National Fuel Gas Company 2009 Non-Employee Director Equity Compensation Plan, and deferred pursuant to the reporting person's election under the National Fuel Gas Company Deferred Compensation Plan for Directors and Officers.

F3 · derivative.exercise_price: Each deferred stock unit is the economic equivalent of one share of common stock. The deferred stock units become payable, in shares of common stock, after the reporting person's termination of service as a director, pursuant to the reporting person's distribution election under the National Fuel Gas Company Deferred Compensation Plan for Directors and Officers.

F3 · derivative.exercise_date: Each deferred stock unit is the economic equivalent of one share of common stock. The deferred stock units become payable, in shares of common stock, after the reporting person's termination of service as a director, pursuant to the reporting person's distribution election under the National Fuel Gas Company Deferred Compensation Plan for Directors and Officers.

F3 · derivative.expiration_date: Each deferred stock unit is the economic equivalent of one share of common stock. The deferred stock units become payable, in shares of common stock, after the reporting person's termination of service as a director, pursuant to the reporting person's distribution election under the National Fuel Gas Company Deferred Compensation Plan for Directors and Officers.

SEC source: 0001733998-25-000082 · form4.xml · nonDerivative · entry 1

ANDERSON DAVID HUGO · CIK 0001241405 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 117,382

F1 · kind: Transaction made pursuant to a Rule 10b5-1 trading plan established by the reporting person on September 16, 2024. As previously disclosed, Mr. Anderson has announced his intention to retire from his position as CEO of NW Holdings and NW Natural, effective April 1, 2025. At the time the 10b5-1 Plan was established, Mr. Anderson held more than 8 times his annual salary in NW Holdings' stock; an amount greater than required by the NW Holdings' stock ownership requirements. This trading arrangement allows Mr. Anderson to periodically sell a portion of his NW Holdings common stock to diversify his holdings in connection with his retirement. As of the date of this filing, Mr. Anderson holds the following shares that are not subject to his trading arrangement: 47,210 shares of which 10,256 are held in Northwest Natural Gas Company's Deferred Compensation Plan for Directors and Officers and 36,954 are held in his trust.

F2 · price: This transaction was executed in multiple trades on reported date with prices ranging from $41.28 to $41.615, resulting in a weighted average price of $41.4631. 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: 0001733998-25-000058 · form4.xml · nonDerivative · entry 2

ANDERSON DAVID HUGO · CIK 0001241405 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 127,470

F2 · shares: 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 28, 2025.

SEC source: 0001733998-25-000058 · form4.xml · nonDerivative · entry 1

ANDERSON DAVID HUGO · CIK 0001241405 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 133,340

F1 · shares: 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 28, 2025.

SEC source: 0001733998-25-000056 · form4.xml · nonDerivative · entry 1

ANDERSON DAVID HUGO · CIK 0001241405 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 138,378

F1 · kind: Transaction made pursuant to a Rule 10b5-1 trading plan established by the reporting person on September 16, 2024. As previously disclosed, Mr. Anderson has announced his intention to retire from his position as CEO, effective April 1, 2025. At the time the 10b5-1 Plan was established, Mr. Anderson held more than 8 times his annual salary in NW Holdings' stock; an amount greater than required by NW Holdings' stock ownership requirements. This trading arrangement allows Mr. Anderson to periodically sell a portion of his NW Holdings stock to diversify his holdings in connection with his retirement. As of March 3, 2025, Mr. Anderson holds 58,118 shares not subject to his trading arrangement of which 10,256 are held in NW Natural's Deferred Compensation Plan, 22,314 are held in his trust, and 25,548 are credited to his joint tenant account as a result of the satisfaction of performance conditions under RSU and performance share awards as reported on his Form 4 filed February 28, 2025.

F2 · price: This transaction was executed in multiple trades on reported date with prices ranging from $42.00 to $42.05, resulting in a weighted average price of $42.0051. 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: 0001733998-25-000024 · form4.xml · nonDerivative · entry 2

ANDERSON DAVID HUGO · CIK 0001241405 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 153,830

F2 · shares: Shares are issuable as a result of satisfaction of performance goals for 2022-2024 under a performance share award. Organization and Executive Compensation Committee certification of the award payout level occurred on the transaction date.

SEC source: 0001733998-25-000024 · form4.xml · nonDerivative · entry 1

ANDERSON DAVID HUGO · CIK 0001241405 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 139,771

F1 · shares: Shares are issuable as a result of satisfaction of the performance threshold for 2024 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: 0001733998-25-000080 · form4.xml · nonDerivative · entry 1

ANDERSON DAVID HUGO · CIK 0001241405 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 151,242

F1 · kind: The original Form 4 filed on February 28, 2025 is amended to report the inadvertent omission of a transaction made pursuant to a Rule 10b5-1 trading plan established by the reporting person on September 16, 2024. As previously disclosed, Mr. Anderson has announced his intention to retire from his position as CEO of NW Holdings and NW Natural, effective April 1, 2025. At the time the 10b5-1 Plan was established, Mr. Anderson held more than 8 times his annual salary in NW Holdings' stock; an amount greater than required by the NW Holdings' stock ownership requirements. This trading arrangement allows Mr. Anderson to periodically sell a portion of his NW Holdings common stock to diversify his holdings in connection with his retirement.

SEC source: 0001733998-25-000014 · form4.xml · nonDerivative · entry 2

ANDERSON DAVID HUGO · CIK 0001241405 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 128,282

F1 · kind: Transaction made pursuant to a Rule 10b5-1 trading plan established by the reporting person on September 16, 2024. As previously disclosed, Mr. Anderson has announced his intention to retire from his position as CEO of NW Holdings and NW Natural, effective April 1, 2025. At the time the 10b5-1 Plan was established, Mr. Anderson held more than 8 times his annual salary in NW Holdings' stock; an amount greater than required by the NW Holdings' stock ownership requirements. This trading arrangement allows Mr. Anderson to periodically sell a portion of his NW Holdings common stock to diversify his holdings in connection with his retirement. As of the date of this filing, Mr. Anderson holds the following shares that are not subject to his trading arrangement: 32,570 shares of which 10,256 are held in Northwest Natural Gas Company's Deferred Compensation Plan for Directors and Officers and 22,314 are held in his trust.

F3 · price: This transaction was executed in multiple trades on reported date with prices ranging from $42.00 to 42.01, resulting in a weighted average price of $42.0001. Northwest Natural Holding Company (Issuer) will provided 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.