David Hugo Anderson - 18 Aug 2026 Form 4 Insider Report for Northwest Natural Holding Co (NWN)

Reporting relationship: Director
Issuer ticker: NWN
Reported as of: 18 Aug 2026
Net transaction value: -$76,294
SEC form: 4
Accepted by SEC: 18 Aug 2026, 19:44:50 UTC
Prior SEC filing: 21 Jul 2026
Source filing: View source filing
Reporting owner signature: Molly J. Wilcox, Attorney-in-Fact

Key filing fact

David Hugo Anderson filed Form 4 for Northwest Natural Holding Co (NWN) on 18 Aug 2026.

Key facts

This page summarizes David Hugo Anderson's Form 4 filing for Northwest Natural Holding Co (NWN).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 18 Aug 2026, 19:44.

Change

Previous filing in this sequence was filed on 21 Jul 2026.
Current net transaction value: -$76,294.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001241405 Primary reporting owner

ANDERSON DAVID HUGO

Relationship: Director
Address: 250 SW TAYLOR ST, PORTLAND
Signature: Molly J. Wilcox, Attorney-in-Fact
Signature date: 18 Aug 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

NWN transaction

Common Stock

Sale

Transaction value: $76,294
Shares: -1,500
Change %: -2.9%
Price: $50.86
Shares after: 50,759
Date: 18 Aug 2026
Ownership: Direct
Footnotes: F1, F2

NWN holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 9,064
Date: 18 Aug 2026
Ownership: See Footnote
Footnotes: F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 3 footnotes

Footnote 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 $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.

Footnote F2

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.

Footnote F3

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