| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| ANDERSON DAVID HUGO | Director | 250 SW TAYLOR ST, PORTLAND | Molly J. Wilcox, Attorney-in-Fact | 20 Jan 2026 | 0001241405 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | NWN | Common Stock | Other | $0 | -1,266 | -12% | $0.000000 | 9,347 | 15 Jan 2026 | See Footnote | F1, F2 |
| transaction | NWN | Common Stock | Other | $0 | +1,266 | +3.4% | $0.000000 | 38,220 | 15 Jan 2026 | Direct | F1 |
| transaction | NWN | Common Stock | Tax liability | $25,651 | -546 | -5.8% | $46.98 | 8,801 | 15 Jan 2026 | See Footnote | F2, F3 |
| Id | Content |
|---|---|
| F1 | 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 | Reflects shares that have been credited to reporting person's account under the DCP. |
| F3 | 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. |