| Company | Symbol | Price | Amount | Relationship | Remaining Holdings | Date | Form 4 |
| NWN | $48.33 | 1,500 | Officer, Other | 10,532 | 2021-03-01 | Filing |
| NWN | $64.00 | 4,000 | Officer, Other | 4,950 | 2019-03-08 | Filing |
| NWN | $61.58 | 2,700 | Officer | 2,107 | 2017-06-06 | Filing |
| NWN | $59.37 | 1,200 | Officer | 1,167 | 2016-06-14 | Filing |