[Form 4] Northwest Natural Holding Company Insider Trading Activity

Rhea-AI Filing Summary

David H. Anderson, a director of Northwest Natural Holding Company, reported a planned sale of 7,574 shares of the issuer's common stock under a pre-established Rule 10b5-1 trading plan. The trades executed at prices ranging from $40.16 to $40.57 produced a weighted average price of $40.4293. After the reported sale, the filing shows 79,717 shares held directly and 10,504.859 shares held indirectly (the indirect amount reflects shares credited to the company deferred compensation plan). The filing also discloses that 47,459 shares are not subject to the trading arrangement, split between the deferred compensation plan and a trust.

Insights

Securities Analyst

TL;DR: Routine, pre-planned insider sale executed under a 10b5-1 plan; not an unexpected exit.

The transaction was executed under a Rule 10b5-1 trading plan, which signals the sale was pre-authorized and intended for diversification following the reporting persons retirement from executive duties. The seller remains a sizeable shareholder with over 79,700 shares held directly and about 10,500 shares indirectly, and an additional 47,459 shares explicitly outside the plan. Pricing details show execution across a narrow band around $40.43, suggesting market execution rather than distressed selling. For investors, this is a transparent, governance-compliant liquidity event rather than a signal of company-specific trouble.

Corporate Governance Expert

TL;DR: Use of a 10b5-1 plan and clear disclosure reflect good governance and insider trading controls.

The report documents a previously established 10b5-1 arrangement set up while share ownership exceeded company requirements, permitting periodic sales to diversify holdings after the reporting persons retirement from CEO duties. The filing provides weighted average price and notes multiple executions, plus identification of shares not subject to the plan. This level of disclosure supports strong compliance practice and reduces ambiguity for shareholders about insider intent.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

X

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

ANDERSON DAVID HUGO

(Last) (First) (Middle)

250 SW TAYLOR ST

(Street)

PORTLAND OR 97204

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Northwest Natural Holding Co [ NWN ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
08/19/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	08/19/2025		S(1)		7,574	D	$40.4293(2)	79,717	D
Common Stock								10,504.859	I	See Footnote(3)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. 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.

2. 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.

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

	Molly J. Wilcox, Attorney-in-Fact	08/20/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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