QUODD

Insider Transactions last 24 months for Northwest Natural Gas Company - NYSE: NWN

Transactions
All	Buy	Sell	Option Exercise

Filer's Name	Relationship/ Title	Trans. Date	Trans. Type	Ownership Type	Security Type	Shares	Price	Trans. Value	Total Shares Owned
Anderson David Hugo	Director	09/18/2025	DS	Direct	COM	7,795	$42.13	$328,433.75	71,922
Wilson Brody J	VP, Treas, Controller & CAO	09/02/2025	DF	Direct	COM	364	$41.53	$15,116.92	12,364
Kaszuba Raymond J Iii	SVP & Chief Financial Officer	09/02/2025	DF	Direct	COM	763	$41.53	$31,687.39	7,052
Wilson Brody J	VP, Treas, Controller & CAO	09/02/2025	DF	Direct	COM	364	$41.53	$15,116.92	12,364
Anderson David Hugo	Director	08/19/2025	DS	Direct	COM	7,574	$40.43	$306,211.52	79,717
Lee Karen	Director	08/06/2025	AI	Indirect	COM	1,282	$39.72	$50,922.19	19,016
Ludford Mary E	Director	08/06/2025	AI	Indirect	COM	648	$39.72	$25,744.00	2,733
Mcdonough Sandra	Director	08/06/2025	AI	Indirect	COM	712	$39.72	$28,290.09	9,458
Anderson David Hugo	Director	07/21/2025	DS	Direct	COM	7,500	$41.96	$314,668.50	87,291
Anderson David Hugo	Director	06/20/2025	DS	Direct	COM	7,500	$39.68	$297,611.25	94,791
Anderson David Hugo	Director	05/21/2025	DS	Direct	COM	7,591	$40.99	$311,175.59	102,291
Lee Karen	Director	05/07/2025	AI	Indirect	COM	1,158	$43.95	$50,915.86	17,537
Ludford Mary E	Director	05/07/2025	AI	Indirect	COM	586	$43.95	$25,740.81	2,067
Mccurdy David K	Director	05/07/2025	AI	Indirect	COM	351	$43.95	$15,444.47	6,354
Mcdonough Sandra	Director	05/07/2025	AI	Indirect	COM	644	$43.95	$28,286.57	8,650
Anderson David Hugo	Director	04/21/2025	DS	Direct	COM	7,500	$43.00	$322,505.25	109,882
Weber David A.	VP, Gas Supply	03/31/2025	DS	Direct	COM	2,183	$42.46	$92,699.35	255
Anderson David Hugo	CEO	03/24/2025	DS	Direct	COM	7,500	$41.46	$310,973.25	117,382
Anderson David Hugo	CEO	03/05/2025	DF	Direct	COM	5,870	$42.10	$247,127.00	127,470
Anderson David Hugo	CEO	03/05/2025	DF	Direct	COM	5,038	$42.10	$212,099.80	133,340
Karney Joseph S	VP, Eng & Utility Operations	03/05/2025	DF	Direct	COM	166	$42.10	$6,988.60	2,969
Kravitz Zachary D	VP, Regulatory Affairs and	03/05/2025	DF	Direct	COM	185	$42.10	$7,788.50	1,568
Palfreyman Justin	President	03/05/2025	DF	Direct	COM	1,574	$42.10	$66,265.40	16,171
Palfreyman Justin	President	03/05/2025	DF	Direct	COM	1,744	$42.10	$73,422.40	17,745
Rogers Melinda B.	VP, Chief HR & Diversity Off.	03/05/2025	DF	Direct	COM	81	$42.10	$3,410.10	2,168

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Transaction Type Key First letter: A = Acquired, D = Disposed Second letter: A = Grant, award or other acquisition pursuant to Rule 16b-3(d) C = Conversion of derivative security \| D = Disposition to the issuer of issuer equity securities pursuant to Rule 16b-3(e) \| E = Expiration of short derivative position \| F = Payment of exercise price or tax liability by delivering or withholding securities incident to the receipt, exercise or vesting of a security issued in accordance with Rule 16b-3. \| G = Gift \| H = Expiration (or cancellation) of long derivative position with value received \| I = Discretionary transaction in accordance with Rule 16b-3(f) \| J = Other \| L = Small acquisition under Rule 16a-6 \| M = Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 \| O = Exercise of out-of-the-money derivative security \| P = Open market or private purchase \| S = Open market or private sale \| U = Disposition pursuant to a tender of shares in a change of control transaction \| W = Acquisition or disposition by will or the laws of descent and distribution \| X = Exercise of in-the-money or at-the-money derivative security \| Z = Deposit into or withdrawal from voting trust		Send to Excel

Transaction Type Key
First letter: A = Acquired, D = Disposed
Second letter:
A = Grant, award or other acquisition pursuant to Rule 16b-3(d) C = Conversion of derivative security | D = Disposition to the issuer of issuer equity securities pursuant to Rule 16b-3(e) | E = Expiration of short derivative position | F = Payment of exercise price or tax liability by delivering or withholding securities incident to the receipt, exercise or vesting of a security issued in accordance with Rule 16b-3. | G = Gift | H = Expiration (or cancellation) of long derivative position with value received | I = Discretionary transaction in accordance with Rule 16b-3(f) | J = Other | L = Small acquisition under Rule 16a-6 | M = Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 | O = Exercise of out-of-the-money derivative security | P = Open market or private purchase | S = Open market or private sale | U = Disposition pursuant to a tender of shares in a change of control transaction | W = Acquisition or disposition by will or the laws of descent and distribution | X = Exercise of in-the-money or at-the-money derivative security | Z = Deposit into or withdrawal from voting trust

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