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| Ticker | Owner | Relationship | Date | Transaction | Cost | #Shares | Value ($) | #Shares Total | SEC Form 4 |
|---|---|---|---|---|---|---|---|---|---|
| NWN | ANDERSON DAVID HUGO | Director | Nov 17 '25 | Sale | 47.95 | 7,468 | 358,083 | 36,954 | Nov 18 12:00 AM |
| NWN | ANDERSON DAVID HUGO | Director | Oct 20 '25 | Sale | 46.39 | 7,500 | 347,951 | 44,422 | Oct 22 12:00 AM |
| NWN | ANDERSON DAVID HUGO | Director | Oct 15 '25 | Sale | 45.00 | 10,509 | 472,912 | 51,922 | Oct 16 12:00 AM |
| NWN | ANDERSON DAVID HUGO | Director | Oct 10 '25 | Sale | 45.00 | 4,930 | 221,850 | 62,431 | Oct 14 12:00 AM |
| NWN | ANDERSON DAVID HUGO | Director | Oct 01 '25 | Sale | 45.00 | 328 | 14,760 | 67,361 | Oct 02 12:00 AM |
| NWN | ANDERSON DAVID HUGO | Director | Sep 30 '25 | Sale | 45.01 | 4,233 | 190,518 | 67,689 | Oct 02 12:00 AM |
| NWN | ANDERSON DAVID HUGO | Director | Sep 18 '25 | Sale | 42.13 | 7,795 | 328,434 | 71,922 | Sep 19 12:00 AM |
| NWN | ANDERSON DAVID HUGO | Director | Aug 19 '25 | Sale | 40.43 | 7,574 | 306,212 | 79,717 | Aug 20 12:00 AM |
| NWN | ANDERSON DAVID HUGO | Director | Jul 21 '25 | Sale | 41.96 | 7,500 | 314,669 | 87,291 | Jul 22 12:00 AM |
| NWN | ANDERSON DAVID HUGO | Director | Jun 20 '25 | Sale | 39.68 | 7,500 | 297,611 | 94,791 | Jun 24 12:00 AM |
| NWN | ANDERSON DAVID HUGO | Director | May 21 '25 | Sale | 40.99 | 7,591 | 311,176 | 102,291 | May 23 12:00 AM |
| NWN | ANDERSON DAVID HUGO | Director | Apr 21 '25 | Sale | 43.00 | 7,500 | 322,505 | 109,882 | Apr 23 12:00 AM |
| NWN | ANDERSON DAVID HUGO | CEO | Mar 24 '25 | Sale | 41.46 | 7,500 | 310,973 | 117,382 | Mar 26 12:00 AM |
| NWN | ANDERSON DAVID HUGO | CEO | Feb 26 '25 | Sale | 42.00 | 2,588 | 108,696 | 151,242 | Mar 26 12:00 AM |
| NWN | ANDERSON DAVID HUGO | CEO | Mar 03 '25 | Sale | 42.01 | 15,452 | 649,063 | 138,378 | Mar 05 12:00 AM |
| NWN | ANDERSON DAVID HUGO | CEO | Feb 25 '25 | Sale | 42.00 | 1,451 | 60,942 | 128,282 | Feb 26 12:00 AM |
| NWN | ANDERSON DAVID HUGO | CEO | Feb 24 '25 | Sale | 42.00 | 509 | 21,380 | 129,733 | Feb 26 12:00 AM |
| NWN | ANDERSON DAVID HUGO | CEO | Feb 20 '25 | Sale | 40.97 | 7,500 | 307,283 | 130,242 | Feb 24 12:00 AM |
| NWN | ANDERSON DAVID HUGO | CEO | Jan 21 '25 | Sale | 41.33 | 7,500 | 309,968 | 137,742 | Jan 23 12:00 AM |
| NWN | ANDERSON DAVID HUGO | CEO | Dec 20 '24 | Sale | 39.78 | 7,500 | 298,382 | 144,298 | Dec 23 12:00 AM |
| NWN | ANDERSON DAVID HUGO | President & CEO | Sep 14 '22 | Sale | 49.73 | 1 | 36 | 125,674 | Sep 14 12:00 AM |
| NWN | ANDERSON DAVID HUGO | President & CEO | Sep 09 '22 | Sale | 48.73 | 1 | 37 | 125,675 | Sep 13 12:00 AM |
| NWN | ANDERSON DAVID HUGO | President & CEO | Jun 22 '22 | Sale | 52.44 | 1,127 | 59,074 | 0 | Jun 24 12:00 AM |
| NWN | ANDERSON DAVID HUGO | President & CEO | Jan 13 '22 | Sale | 48.04 | 1,290 | 61,976 | 12,395 | Jan 18 12:00 AM |
| NWN | ANDERSON DAVID HUGO | President & CEO | Jan 14 '21 | Sale | 44.21 | 1,580 | 69,857 | 15,925 | Jan 19 12:00 AM |