person · Reporting owner

ANDERSON DAVID HUGO

Disclosed activity across 3 companies

Tapewire entity: 22143
SEC CIK: 0001241405

Reported relationships

Latest disclosed role at each company.

Company	Last reported as	Report date	Published
NATIONAL FUEL GAS CONFG · Entity 3644	Director	October 01, 2026	October 02, 2026
NORTHWEST NATURAL GAS CONWN · Entity 164055	Director · President & CEO	August 08, 2018	August 10, 2018
Northwest Natural Holding CoNWN · Entity 2245	Director	September 18, 2026	September 21, 2026

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

NATIONAL FUEL GAS CO

Report date October 01, 2026 · Filed October 02, 2026

Security / award	Ownership account	Disclosed shares / units	Disclosure context
Common StockSEC Table I · non-derivative	IndirectBy Anderson Family Trust	222	Reported balance After 2026-07-15 transaction · row 2 Account identity is unresolved; indirect or unspecified ownership is not merged. 1 source row Row 2 · 2026-07-15 · Other · Acquired 1 · Balance 222 F1: Acquired through dividend reinvestment plan, exempt under Rule 16a-11.
Deferred Stock UnitsSEC Table II · derivative / convertible security	Direct	19,362	Reported balance After 2026-07-15 transaction · row 3 Instrument identity requires review; Table II rows are not merged. 1 source row Row 3 · 2026-07-15 · Other · Acquired 129 · Balance 19,362 F2: Acquired through dividend reinvestment feature of the National Fuel Gas Company Deferred Compensation Plan for Directors and Officers, exempt under Rule 16a-11. F3: 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.
Deferred Stock UnitsSEC Table II · derivative / convertible security	Direct	19,939	Reported balance After 2026-10-01 transaction · row 4 Instrument identity requires review; Table II rows are not merged. 1 source row Row 4 · 2026-10-01 · Grant · Acquired 577 · Balance 19,939 F4: 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: 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.
Common StockSEC Table I · non-derivative	Direct	5,173	Reported balance Holding disclosure · report date 2026-10-01 · row 1 Holding and transaction disclosures are not merged. 1 source row Row 1 · Balance 5,173

Filing footnotes · ownership attribution and instrument terms

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

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

F3: 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.

F4: 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.

NORTHWEST NATURAL GAS CO

Report date August 08, 2018 · Filed August 10, 2018

Security / award	Ownership account	Disclosed shares / units	Disclosure context
Common StockSEC Table I · non-derivative	IndirectSee Footnote	20,879.831	Reported balance After 2018-08-08 transaction · row 1 Holding and transaction disclosures are not merged. 1 source row Row 1 · 2018-08-08 · Other · Acquired 1,264.64 · Balance 20,879.831 F1: Shares have been credited to reporting person's account under issuer's Deferred Compensation Plan for Directors and Executives.
Common StockSEC Table I · non-derivative	IndirectSee Footnote	985.901	Reported balance Holding disclosure · report date 2018-08-08 · row 3 Holding and transaction disclosures are not merged. 1 source row Row 3 · Balance 985.901 F2: Shares held in reporting person's account under the issuer's Retirement K Savings Plan as of July 31, 2018.
Common StockSEC Table I · non-derivative	Direct	68,530.6765	Reported balance Holding disclosure · report date 2018-08-08 · row 2 Holding and transaction disclosures are not merged. 1 source row Row 2 · Balance 68,530.6765

Filing footnotes · ownership attribution and instrument terms

F1: Shares have been credited to reporting person's account under issuer's Deferred Compensation Plan for Directors and Executives.

F2: Shares held in reporting person's account under the issuer's Retirement K Savings Plan as of July 31, 2018.

Northwest Natural Holding Co

Report date September 18, 2026 · Filed September 21, 2026

Security / award	Ownership account	Disclosed shares / units	Disclosure context
Common StockSEC Table I · non-derivative	Direct	49,259	Reported balance After 2026-09-18 transaction · row 1 1 source row Row 1 · 2026-09-18 · Sale · Disposed 1,500 · Balance 49,259 F1: 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: 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.
Common StockSEC Table I · non-derivative	IndirectSee Footnote	9,064.094	Reported balance Holding disclosure · report date 2026-09-18 · row 2 Holding and transaction disclosures are not merged. 1 source row Row 2 · Balance 9,064.094 F3: Shares have been credited to reporting person's account under Northwest Natural Gas Company's Deferred Compensation Plan for Directors and Executives.

Filing footnotes · ownership attribution and instrument terms

F1: 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: 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.

F3: Shares have been credited to reporting person's account under Northwest Natural Gas Company's Deferred Compensation Plan for Directors and Executives.

Transaction history

JSON API

Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction date	Company	Activity / security	Shares / units	Reported price	Reported value	Details
January 16, 2020 Filed Jan 21, 2020 21:57 UTC	Northwest Natural Holding Co NWN · Entity 2245	OtherCommon Stock	1,545	$0.00	$0.00	Disclosure SEC source: 0001567619-20-001303 · doc1.xml · nonDerivative · entry 2 ANDERSON DAVID HUGO · CIK 0001241405 · Director · President & CEO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 78,104.761 F1 · shares: Shares were distributed from Deferred Compensation Plan for Directors and Executives (DCP) account to reporting person's registered account pursuant to reporting person's election on November 18, 2014 and December 2, 2015. Read SEC document
January 16, 2020 Filed Jan 21, 2020 21:57 UTC	Northwest Natural Holding Co NWN · Entity 2245	OtherCommon Stock	1,545	$0.00	$0.00	Disclosure SEC source: 0001567619-20-001303 · doc1.xml · nonDerivative · entry 1 ANDERSON DAVID HUGO · CIK 0001241405 · Director · President & CEO 10b5-1 filing: Not disclosed Ownership: Indirect · See Footnote Disclosed balance after: 21,190.36 F1 · shares: Shares were distributed from Deferred Compensation Plan for Directors and Executives (DCP) account to reporting person's registered account pursuant to reporting person's election on November 18, 2014 and December 2, 2015. F2 · ownership.nature: Reflects shares that have been credited to reporting person's account under the issuer's DCP. Read SEC document
January 16, 2020 Filed Apr 2, 2020 19:11 UTC	NATIONAL FUEL GAS CO NFG · Entity 3644	OtherCommon Stock	2	$45.10	$90.20	Disclosure SEC source: 0001562180-20-002831 · primarydocument.xml · nonDerivative · entry 2 ANDERSON DAVID HUGO · CIK 0001241405 · Director 10b5-1 filing: Not disclosed Ownership: Indirect · By Anderson Family Trust Disclosed balance after: 180 F2 · security: Acquired through dividend reinvestment plan, exempt under Rule 16a-11. Read SEC document
January 02, 2020 Filed Jan 3, 2020 18:20 UTC	NATIONAL FUEL GAS CO NFG · Entity 3644	GrantCommon Stock	958	$45.69	$43,771.02	Disclosure SEC source: 0001562180-20-000097 · primarydocument.xml · nonDerivative · entry 1 ANDERSON DAVID HUGO · CIK 0001241405 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 2,899 F1 · security: Acquired through quarterly grant under the National Fuel Gas Company 2009 Non-Employee Director Equity Compensation Plan. Read SEC document
October 16, 2019 Filed Jan 3, 2020 18:20 UTC	NATIONAL FUEL GAS CO NFG · Entity 3644	OtherCommon Stock	2	$44.77	$89.54	Disclosure SEC source: 0001562180-20-000097 · primarydocument.xml · nonDerivative · entry 2 ANDERSON DAVID HUGO · CIK 0001241405 · Director 10b5-1 filing: Not disclosed Ownership: Indirect · By Anderson Family Trust Disclosed balance after: 178 F2 · security: Acquired through dividend reinvestment plan, exempt under Rule 16a-11. Read SEC document
October 01, 2019 Filed Oct 2, 2019 20:08 UTC	NATIONAL FUEL GAS CO NFG · Entity 3644	GrantCommon Stock	948	$46.17	$43,769.16	Disclosure SEC source: 0001562180-19-005052 · primarydocument.xml · nonDerivative · entry 1 ANDERSON DAVID HUGO · CIK 0001241405 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 1,941 F1 · security: Acquired through quarterly grant under the National Fuel Gas Company 2009 Non-Employee Director Equity Compensation Plan. Read SEC document
July 16, 2019 Filed Oct 2, 2019 20:08 UTC	NATIONAL FUEL GAS CO NFG · Entity 3644	OtherCommon Stock	2	$52.10	$104.19	Disclosure SEC source: 0001562180-19-005052 · primarydocument.xml · nonDerivative · entry 2 ANDERSON DAVID HUGO · CIK 0001241405 · Director 10b5-1 filing: Not disclosed Ownership: Indirect · By Anderson Family Trust Disclosed balance after: 176 F2 · security: Acquired through dividend reinvestment plan, exempt under Rule 16a-11. Read SEC document
July 01, 2019 Filed Jul 2, 2019 21:40 UTC	NATIONAL FUEL GAS CO NFG · Entity 3644	GrantCommon Stock	827	$52.93	$43,768.98	Disclosure SEC source: 0001562180-19-003802 · primarydocument.xml · nonDerivative · entry 1 ANDERSON DAVID HUGO · CIK 0001241405 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 993 F1 · security: Acquired through quarterly grant under the National Fuel Gas Company 2009 Non-Employee Director Equity Compensation Plan. Read SEC document
June 27, 2019 Filed Jun 28, 2019 19:57 UTC	NATIONAL FUEL GAS CO NFG · Entity 3644	GrantCommon Stock	166	$52.34	$8,688.44	Disclosure SEC source: 0001562180-19-003674 · primarydocument.xml · nonDerivative · entry 1 ANDERSON DAVID HUGO · CIK 0001241405 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 166 F1 · security: Acquired through grant under the National Fuel Gas Company 2009 Non-Employee Director Equity Compensation Plan. Read SEC document
March 06, 2019 Filed Mar 7, 2019 22:03 UTC	Northwest Natural Holding Co NWN · Entity 2245	Tax withholdingCommon Stock	3,508	$64.21	$225,248.68	Disclosure SEC source: 0001567619-19-006400 · doc1.xml · nonDerivative · entry 6 ANDERSON DAVID HUGO · CIK 0001241405 · Director · President & CEO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 77,375.958 F3 · 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, 2019. Read SEC document
March 06, 2019 Filed Mar 7, 2019 22:03 UTC	Northwest Natural Holding Co NWN · Entity 2245	Tax withholdingCommon Stock	1,249	$64.21	$80,198.29	Disclosure SEC source: 0001567619-19-006400 · doc1.xml · nonDerivative · entry 5 ANDERSON DAVID HUGO · CIK 0001241405 · Director · President & CEO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 80,883.958 F2 · 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, 2019. Read SEC document
March 05, 2019 Filed Mar 7, 2019 22:03 UTC	Northwest Natural Holding Co NWN · Entity 2245	Exercise / conversionEmployee Stock Option to Buy · Derivative	8,000	$0.00 Strike: $44.25	$0.00	Disclosure SEC source: 0001567619-19-006400 · doc1.xml · derivative · entry 10 ANDERSON DAVID HUGO · CIK 0001241405 · Director · President & CEO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 8,000 shares Expires 2020-03-02 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F6 · price: Options were granted as part of compensation for services. The options were exercised as a cashless exercise. F8 · derivative.exercise_date: The options vested in four equal installments on each of February 24, 2011, and January 1, 2012, 2013 and 2014. Read SEC document
March 05, 2019 Filed Mar 7, 2019 22:03 UTC	Northwest Natural Holding Co NWN · Entity 2245	Exercise / conversionEmployee Stock Option to Buy · Derivative	11,000	$0.00 Strike: $45.74	$0.00	Disclosure SEC source: 0001567619-19-006400 · doc1.xml · derivative · entry 9 ANDERSON DAVID HUGO · CIK 0001241405 · Director · President & CEO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 11,000 shares Expires 2021-03-02 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F6 · price: Options were granted as part of compensation for services. The options were exercised as a cashless exercise. F7 · derivative.exercise_date: The options vested in four equal installments on each of February 23, 2012, and January 1, 2013, 2014 and 2015. Read SEC document
March 05, 2019 Filed Mar 7, 2019 22:03 UTC	Northwest Natural Holding Co NWN · Entity 2245	SaleCommon Stock	8,000	$64.94	$519,482.40	Disclosure SEC source: 0001567619-19-006400 · doc1.xml · nonDerivative · entry 4 ANDERSON DAVID HUGO · CIK 0001241405 · Director · President & CEO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 82,132.958 F1 · price: This transaction was executed in multiple trades for an aggregate of 19,000 shares on reported date with prices ranging from $64.34 to $65.59, resulting in an average price of $64.9353. Northwest Natural Holding Company ("Issuer") will provide upon request by the Commission staff of a security holder of the Issuer full information regarding the number of shares purchased or sold at each separate price. Read SEC document
March 05, 2019 Filed Mar 7, 2019 22:03 UTC	Northwest Natural Holding Co NWN · Entity 2245	Exercise / conversionCommon Stock	8,000	$44.25	$354,000.00	Disclosure SEC source: 0001567619-19-006400 · doc1.xml · nonDerivative · entry 3 ANDERSON DAVID HUGO · CIK 0001241405 · Director · President & CEO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 90,132.958 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document
March 05, 2019 Filed Mar 7, 2019 22:03 UTC	Northwest Natural Holding Co NWN · Entity 2245	SaleCommon Stock	11,000	$64.94	$714,288.30	Disclosure SEC source: 0001567619-19-006400 · doc1.xml · nonDerivative · entry 2 ANDERSON DAVID HUGO · CIK 0001241405 · Director · President & CEO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 82,132.958 F1 · price: This transaction was executed in multiple trades for an aggregate of 19,000 shares on reported date with prices ranging from $64.34 to $65.59, resulting in an average price of $64.9353. Northwest Natural Holding Company ("Issuer") will provide upon request by the Commission staff of a security holder of the Issuer full information regarding the number of shares purchased or sold at each separate price. Read SEC document
March 05, 2019 Filed Mar 7, 2019 22:03 UTC	Northwest Natural Holding Co NWN · Entity 2245	Exercise / conversionCommon Stock	11,000	$45.74	$503,140.00	Disclosure SEC source: 0001567619-19-006400 · doc1.xml · nonDerivative · entry 1 ANDERSON DAVID HUGO · CIK 0001241405 · Director · President & CEO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 93,132.958 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document
February 27, 2019 Filed Feb 28, 2019 23:26 UTC	Northwest Natural Holding Co NWN · Entity 2245	GrantCommon Stock	8,782	$0.00	$0.00	Disclosure SEC source: 0001567619-19-005640 · doc1.xml · nonDerivative · entry 2 ANDERSON DAVID HUGO · CIK 0001241405 · Director · President & CEO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 82,132.958 F2 · shares: Shares are issuable as a result of satisfaction of performance goals for 2016-2018 under a performance share award. Organization and Executive Compensation Committee certification of the award payout level occurred on the transaction date. Read SEC document
February 27, 2019 Filed Feb 28, 2019 23:26 UTC	Northwest Natural Holding Co NWN · Entity 2245	GrantCommon Stock	4,275	$0.00	$0.00	Disclosure SEC source: 0001567619-19-005640 · doc1.xml · nonDerivative · entry 1 ANDERSON DAVID HUGO · CIK 0001241405 · Director · President & CEO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 73,350.958 F1 · shares: Shares are issuable as a result of satisfaction of the performance threshold for 2018 under restricted stock unit awards. Organization and Executive Compensation Committee certification of the satisfaction of the performance threshold occurred on the transaction date. Read SEC document
January 17, 2019 Filed Jan 23, 2019 00:19 UTC	Northwest Natural Holding Co NWN · Entity 2245	SaleCommon Stock	72	$59.23	$4,264.88	Disclosure SEC source: 0001567619-19-001465 · doc1.xml · nonDerivative · entry 3 ANDERSON DAVID HUGO · CIK 0001241405 · Director · President & CEO 10b5-1 filing: Not disclosed Ownership: Indirect · See Footnote Disclosed balance after: 22,102.277 F3 · shares: These shares were issued in connection with the reporting person's election on November 18, 2014 to participate in the issuer's DCP, which specifies that taxes shall be withheld from distributions. Pursuant to the DCP and the reporting person's election, these shares were sold to pay taxes on the DCP distribution made on January 17, 2019. F4 · price: This transaction was executed in aggregate along with stock sales of other DCP participants who received DCP stock distributions on January 17, 2019 and elected to have taxes withheld (The Transaction). The Transaction was executed in multiple trades on reported date with prices ranging from $59.15 to $59.76, resulting in average price of $59.2345. Northwest Natural Holding Company will provide upon request by Commission staff or a security holder of the issuer full information regarding the number of shares sold at each separate price. F2 · ownership.nature: Reflects shares that have been credited to reporting person's account under the issuer's DCP. Read SEC document
January 17, 2019 Filed Jan 23, 2019 00:19 UTC	Northwest Natural Holding Co NWN · Entity 2245	OtherCommon Stock	158	$0.00	$0.00	Disclosure SEC source: 0001567619-19-001465 · doc1.xml · nonDerivative · entry 2 ANDERSON DAVID HUGO · CIK 0001241405 · Director · President & CEO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 69,069.7988 F1 · shares: Shares were distributed from Deferred Compensation Plan for Directors and Executives (DCP) account to reporting person's registered account pursuant to reporting person's election on November 18, 2014. Read SEC document
January 17, 2019 Filed Jan 23, 2019 00:19 UTC	Northwest Natural Holding Co NWN · Entity 2245	OtherCommon Stock	158	$0.00	$0.00	Disclosure SEC source: 0001567619-19-001465 · doc1.xml · nonDerivative · entry 1 ANDERSON DAVID HUGO · CIK 0001241405 · Director · President & CEO 10b5-1 filing: Not disclosed Ownership: Indirect · See Footnote Disclosed balance after: 22,174.277 F1 · shares: Shares were distributed from Deferred Compensation Plan for Directors and Executives (DCP) account to reporting person's registered account pursuant to reporting person's election on November 18, 2014. F2 · ownership.nature: Reflects shares that have been credited to reporting person's account under the issuer's DCP. Read SEC document
November 07, 2018 Filed Nov 9, 2018 18:02 UTC	Northwest Natural Holding Co NWN · Entity 2245	OtherCommon Stock	1,164.111	$68.00	$79,159.55	Disclosure SEC source: 0001567619-18-005482 · doc1.xml · nonDerivative · entry 1 ANDERSON DAVID HUGO · CIK 0001241405 · Director · President & CEO 10b5-1 filing: Not disclosed Ownership: Indirect · See Footnote Disclosed balance after: 22,187.634 F1 · ownership.nature: Shares have been credited to reporting person's account under issuer's Deferred Compensation Plan for Directors and Executives. Read SEC document
August 08, 2018 Filed Aug 10, 2018 14:48 UTC	NORTHWEST NATURAL GAS CO NWN · Entity 164055	OtherCommon Stock	1,264.64	$62.60	$79,166.46	Disclosure SEC source: 0001567619-18-000311 · doc1.xml · nonDerivative · entry 1 ANDERSON DAVID HUGO · CIK 0001241405 · Director · President & CEO 10b5-1 filing: Not disclosed Ownership: Indirect · See Footnote Disclosed balance after: 20,879.831 F1 · ownership.nature: Shares have been credited to reporting person's account under issuer's Deferred Compensation Plan for Directors and Executives. Read SEC document
May 09, 2018 Filed May 11, 2018 17:44 UTC	NORTHWEST NATURAL GAS CO NWN · Entity 164055	OtherCommon Stock	5,660.448	$60.45	$342,174.08	Disclosure SEC source: 0001140361-18-022986 · doc1.xml · nonDerivative · entry 1 ANDERSON DAVID HUGO · CIK 0001241405 · Director · President & CEO 10b5-1 filing: Not disclosed Ownership: Indirect · See Footnote Disclosed balance after: 19,505.794 F1 · ownership.nature: Shares have been credited to reporting person's account under issuer's Deferred Compensation Plan for Directors and Executives. Read SEC document
March 01, 2018 Filed Mar 5, 2018 17:50 UTC	NORTHWEST NATURAL GAS CO NWN · Entity 164055	Tax withholdingCommon Stock	768	$52.15	$40,051.20	Disclosure SEC source: 0001140361-18-011882 · doc1.xml · nonDerivative · entry 2 ANDERSON DAVID HUGO · CIK 0001241405 · Director · President & CEO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 68,527.3636 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 23, 2018. Read SEC document
March 01, 2018 Filed Mar 5, 2018 17:50 UTC	NORTHWEST NATURAL GAS CO NWN · Entity 164055	Tax withholdingCommon Stock	969	$52.15	$50,533.35	Disclosure SEC source: 0001140361-18-011882 · doc1.xml · nonDerivative · entry 1 ANDERSON DAVID HUGO · CIK 0001241405 · Director · President & CEO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 69,295.3636 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 23, 2018. Read SEC document
February 26, 2018 Filed Mar 1, 2018 01:38 UTC	NORTHWEST NATURAL GAS CO NWN · Entity 164055	OtherCommon Stock	2,275.901	$53.70	$122,215.88	Disclosure SEC source: 0001140361-18-010966 · doc1.xml · nonDerivative · entry 1 ANDERSON DAVID HUGO · CIK 0001241405 · Director · President & CEO 10b5-1 filing: Not disclosed Ownership: Indirect · See Footnote Disclosed balance after: 13,845.346 F1 · ownership.nature: Shares have been credited to reporting person's account under issuer's Deferred Compensation Plan for Directors and Executives. Read SEC document
February 21, 2018 Filed Feb 23, 2018 21:25 UTC	NORTHWEST NATURAL GAS CO NWN · Entity 164055	GrantCommon Stock	2,931	$0.00	$0.00	Disclosure SEC source: 0001140361-18-009853 · doc1.xml · nonDerivative · entry 2 ANDERSON DAVID HUGO · CIK 0001241405 · Director · President & CEO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 70,264.3636 F2 · shares: Shares are issuable as a result of satisfaction of performance goals for 2015-2017 under a performance share award. Organization and Executive Compensation Committee certification of the award payout level occurred on the transaction date. Read SEC document
February 21, 2018 Filed Feb 23, 2018 21:25 UTC	NORTHWEST NATURAL GAS CO NWN · Entity 164055	GrantCommon Stock	3,425	$0.00	$0.00	Disclosure SEC source: 0001140361-18-009853 · doc1.xml · nonDerivative · entry 1 ANDERSON DAVID HUGO · CIK 0001241405 · Director · President & CEO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 67,333.3636 F1 · shares: Shares are issuable as a result of satisfaction of the performance threshold for 2017 under restricted stock unit awards. Organization and Executive Compensation Committee certification of the satisfaction of the performance threshold occurred on the transaction date. Read SEC document
November 06, 2017 Filed Nov 8, 2017 23:13 UTC	NORTHWEST NATURAL GAS CO NWN · Entity 164055	OtherCommon Stock	1,298.501	$66.05	$85,765.99	Disclosure SEC source: 0001140361-17-041630 · doc1.xml · nonDerivative · entry 1 ANDERSON DAVID HUGO · CIK 0001241405 · Director · President & CEO 10b5-1 filing: Not disclosed Ownership: Indirect · See Footnote Disclosed balance after: 11,401.146 F1 · ownership.nature: Shares have been credited to reporting person's account under issuer's Deferred Compensation Plan for Directors and Executives. Read SEC document
September 05, 2017 Filed Sep 7, 2017 18:04 UTC	NORTHWEST NATURAL GAS CO NWN · Entity 164055	Exercise / conversionEmployee Stock Option to Buy · Derivative	8,000	$0.00 Strike: $43.29	$0.00	Disclosure SEC source: 0001140361-17-034607 · doc1.xml · derivative · entry 5 ANDERSON DAVID HUGO · CIK 0001241405 · Director · Pres. & CEO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 8,000 shares Expires 2018-03-06 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F5 · price: Option was granted as part of compensation for services. The option was exercised in a cashless exercise. F4 · derivative.exercise_date: The options vested in four equal installments on February 27, 2009, and January 1, 2010, 2011, and 2012. Read SEC document
September 05, 2017 Filed Sep 7, 2017 18:04 UTC	NORTHWEST NATURAL GAS CO NWN · Entity 164055	SaleCommon Stock	8,000	$66.97	$535,758.40	Disclosure SEC source: 0001140361-17-034607 · doc1.xml · nonDerivative · entry 2 ANDERSON DAVID HUGO · CIK 0001241405 · Director · Pres. & CEO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 63,483.7318 F1 · price: This transaction was executed in multiple trades on reported date with prices ranging from $66.925 - $67.05, resulting in an average price of $66.9698. Northwest Natural Gas Company ("Issuer") will provide upon request by the Commission staff or a security holder of the Issuer full information regarding the number of shares purchased or sold at each separate transaction. Read SEC document
September 05, 2017 Filed Sep 7, 2017 18:04 UTC	NORTHWEST NATURAL GAS CO NWN · Entity 164055	Exercise / conversionCommon Stock	8,000	$43.29	$346,320.00	Disclosure SEC source: 0001140361-17-034607 · doc1.xml · nonDerivative · entry 1 ANDERSON DAVID HUGO · CIK 0001241405 · Director · Pres. & CEO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 71,483.7318 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document
August 03, 2017 Filed Aug 7, 2017 22:28 UTC	NORTHWEST NATURAL GAS CO NWN · Entity 164055	OtherCommon Stock	950.346	$64.45	$61,249.80	Disclosure SEC source: 0001140361-17-030400 · doc1.xml · nonDerivative · entry 1 ANDERSON DAVID HUGO · CIK 0001241405 · Director · President & CEO 10b5-1 filing: Not disclosed Ownership: Indirect · See Footnote Disclosed balance after: 10,036.691 F1 · ownership.nature: Shares have been credited to reporting person's account under issuer's Deferred Compensation Plan for Directors and Executives. Read SEC document
May 09, 2017 Filed May 11, 2017 17:10 UTC	NORTHWEST NATURAL GAS CO NWN · Entity 164055	OtherCommon Stock	2,005.035	$58.90	$118,096.56	Disclosure SEC source: 0001140361-17-019581 · doc1.xml · nonDerivative · entry 1 ANDERSON DAVID HUGO · CIK 0001241405 · Director · President & CEO 10b5-1 filing: Not disclosed Ownership: Indirect · See Footnote Disclosed balance after: 9,031.077 F1 · ownership.nature: Shares have been credited to reporting person's account under issuer's Deferred Compensation Plan for Directors and Executives. Read SEC document
March 01, 2017 Filed Mar 2, 2017 01:02 UTC	NORTHWEST NATURAL GAS CO NWN · Entity 164055	Tax withholdingCommon Stock	1,330	$60.10	$79,933.00	Disclosure SEC source: 0001140361-17-010103 · doc1.xml · nonDerivative · entry 3 ANDERSON DAVID HUGO · CIK 0001241405 · Director · President & CEO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 63,483.7175 F3 · 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 24, 2017. Read SEC document
March 01, 2017 Filed Mar 2, 2017 01:02 UTC	NORTHWEST NATURAL GAS CO NWN · Entity 164055	Tax withholdingCommon Stock	939	$60.10	$56,433.90	Disclosure SEC source: 0001140361-17-010103 · doc1.xml · nonDerivative · entry 2 ANDERSON DAVID HUGO · CIK 0001241405 · Director · President & CEO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 64,813.7175 F2 · 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 24, 2017. Read SEC document
February 28, 2017 Filed Mar 2, 2017 01:02 UTC	NORTHWEST NATURAL GAS CO NWN · Entity 164055	OtherCommon Stock	1,278.065	$60.10	$76,811.71	Disclosure SEC source: 0001140361-17-010103 · doc1.xml · nonDerivative · entry 1 ANDERSON DAVID HUGO · CIK 0001241405 · Director · President & CEO 10b5-1 filing: Not disclosed Ownership: Indirect · See Footnote Disclosed balance after: 7,026.042 F1 · ownership.nature: Shares have been credited to reporting person's account under issuer's Deferred Compensation Plan for Directors and Executives. Read SEC document
February 22, 2017 Filed Feb 24, 2017 20:02 UTC	NORTHWEST NATURAL GAS CO NWN · Entity 164055	GrantCommon Stock	4,322	$0.00	$0.00	Disclosure SEC source: 0001140361-17-009069 · doc1.xml · nonDerivative · entry 2 ANDERSON DAVID HUGO · CIK 0001241405 · Director · President & CEO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 65,752.7175 F2 · shares: Shares are issuable as a result of satisfaction of performance goals for 2014-2016 under a performance share award. Organization and Executive Compensation Committee certification of the award payout level occurred on the transaction date. Read SEC document
February 22, 2017 Filed Feb 24, 2017 20:02 UTC	NORTHWEST NATURAL GAS CO NWN · Entity 164055	GrantCommon Stock	2,950	$0.00	$0.00	Disclosure SEC source: 0001140361-17-009069 · doc1.xml · nonDerivative · entry 1 ANDERSON DAVID HUGO · CIK 0001241405 · Director · President & CEO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 61,430.7175 F1 · shares: Shares are issuable as a result of satisfaction of the performance threshold for 2016 under restricted stock unit awards. Organization and Executive Compensation Committee certification of the satisfaction of the performance threshold occurred on the transaction date. Read SEC document
January 12, 2017 Filed Jan 17, 2017 22:07 UTC	NORTHWEST NATURAL GAS CO NWN · Entity 164055	SaleCommon Stock	1,181	$58.07	$68,578.43	Disclosure SEC source: 0001140361-17-002051 · doc1.xml · nonDerivative · entry 4 ANDERSON DAVID HUGO · CIK 0001241405 · Director · President & CEO 10b5-1 filing: Not disclosed Ownership: Indirect · See Footnote Disclosed balance after: 5,702.358 F4 · shares: These shares were issued in connection with the Reporting Person's election on March 23, 2012 to participate in the issuer's DCP, which specifies that taxes shall be withheld from distributions. Pursuant to the DCP and the Reporting Person's election on March 23, 2012, these shares were sold to pay taxes on the DCP distribution made on January 12, 2017. F5 · price: This transaction was executed in aggregate along with stock sales of other DCP participants who received DCP stock distributions on January 12, 2017 and elected that taxes be withheld (The Transaction). The Transaction was executed in multiple trades on reported date with prices ranging from $58 - $58.15, resulting in an average price of $58.0681. Northwest Natural Gas Company 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 in the Transaction. F2 · ownership.nature: Reflects shares that have been credited to reporting person's account under the issuer's DCP. Read SEC document
January 12, 2017 Filed Jan 17, 2017 22:07 UTC	NORTHWEST NATURAL GAS CO NWN · Entity 164055	SaleCommon Stock	0.47	$60.55	$28.46	Disclosure SEC source: 0001140361-17-002051 · doc1.xml · nonDerivative · entry 3 ANDERSON DAVID HUGO · CIK 0001241405 · Director · President & CEO 10b5-1 filing: Not disclosed Ownership: Indirect · See Footnote Disclosed balance after: 6,883.358 F3 · shares: This fractional share was distributed in connection with the Reporting Person's election on March 23, 2012 to participate in the issuer's DCP. Distribution of fractional share was made in cash based on the closing market value on January 4, 2017. F2 · ownership.nature: Reflects shares that have been credited to reporting person's account under the issuer's DCP. Read SEC document
January 12, 2017 Filed Jan 17, 2017 22:07 UTC	NORTHWEST NATURAL GAS CO NWN · Entity 164055	OtherCommon Stock	2,144	$0.00	$0.00	Disclosure SEC source: 0001140361-17-002051 · doc1.xml · nonDerivative · entry 2 ANDERSON DAVID HUGO · CIK 0001241405 · Director · President & CEO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 58,462.0625 F1 · shares: Shares were distributed from Deferred Compensation Plan for Directors and Executives (DCP) account to reporting person's registered account pursuant to reporting person's election on March 23, 2012. Read SEC document
January 12, 2017 Filed Jan 17, 2017 22:07 UTC	NORTHWEST NATURAL GAS CO NWN · Entity 164055	OtherCommon Stock	2,144	$0.00	$0.00	Disclosure SEC source: 0001140361-17-002051 · doc1.xml · nonDerivative · entry 1 ANDERSON DAVID HUGO · CIK 0001241405 · Director · President & CEO 10b5-1 filing: Not disclosed Ownership: Indirect · See Footnote Disclosed balance after: 6,883.828 F1 · shares: Shares were distributed from Deferred Compensation Plan for Directors and Executives (DCP) account to reporting person's registered account pursuant to reporting person's election on March 23, 2012. F2 · ownership.nature: Reflects shares that have been credited to reporting person's account under the issuer's DCP. Read SEC document
November 03, 2016 Filed Nov 8, 2016 00:03 UTC	NORTHWEST NATURAL GAS CO NWN · Entity 164055	OtherCommon Stock	255.505	$56.45	$14,423.26	Disclosure SEC source: 0001140361-16-085221 · doc1.xml · nonDerivative · entry 1 ANDERSON DAVID HUGO · CIK 0001241405 · Director · President & CEO 10b5-1 filing: Not disclosed Ownership: Indirect · See Footnote Disclosed balance after: 8,955.074 F1 · ownership.nature: Shares have been credited to reporting person's account under issuer's Deferred Compensation Plan for Directors and Executives. Read SEC document

Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.