| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| WILSON BRODY J | VP, Treas, Controller & CAO | 250 SW TAYLOR ST, PORTLAND | Molly J. Wilcox, Attorney-in-Fact | 2025-09-04 | 0001571275 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | NWN | Common Stock | Tax liability | -$15.1K | -364 | -2.86% | $41.53 | 12.4K | Sep 2, 2025 | Direct | F1, F2 |
| holding | NWN | Common Stock | 6.9K | Sep 2, 2025 | See Footnote | F3 | |||||
| holding | NWN | Common Stock | 205 | Sep 2, 2025 | See Footnote | F4 |
| Id | Content |
|---|---|
| F1 | Shares were withheld by Issuer to cover withholding taxes on issuance of time-based restricted stock units which vested on September 1, 2025. |
| F2 | Includes 2,172 time-based restricted stock units granted under Issuer's Long Term Incentive Plan. The restricted stock units vest in two equal installments on each of September 1, 2026 and 2027. |
| F3 | Shares have been credited to the reporting person's account under Northwest Natural Gas Company's Deferred Compensation Plan for Directors and Executives. |
| F4 | Shares held in reporting person's account under Northwest Natural Gas Company's Retirement K Savings Plan as of August 15, 2025. |