| 2008-07-30 | Sale | Northwest Pipe Company NWPX | director | 11,026 0.1211% | $59.00 | $650,534 | -38.18% | |
| 2008-07-29 | Sale | Northwest Pipe Company NWPX | director | 8,974 0.0984% | $59.00 | $529,466 | -38.13% | |
| 2008-07-28 | Sale | Northwest Pipe Company NWPX | director | 20,000 0.2192% | $59.14 | $1.18M | -38.19% | |
| 2008-05-27 | Sale | Northwest Pipe Company NWPX | director | 817 0.0089% | $48.29 | $39,456 | -21.7% | |
| 2008-05-19 | Sale | Northwest Pipe Company NWPX | director | 37,272 0.4142% | $47.84 | $1.78M | -18.64% | |
| 2008-05-16 | Sale | Northwest Pipe Company NWPX | director | 2,236 0.0244% | $47.70 | $106,657 | -19.53% | |
| 2008-05-09 | Sale | Northwest Pipe Company NWPX | director | 1,000 0.0109% | $46.19 | $46,190 | -15.5% | |
| 2008-03-14 | Sale | Northwest Pipe Company NWPX | director | 8,236 0.0909% | $38.95 | $320,817 | +8.19% | |
| 2008-03-13 | Sale | Northwest Pipe Company NWPX | director | 28,876 0.2129% | $26.12 | $754,313 | +7.73% | |
| 2007-12-13 | Sale | Northwest Pipe Company NWPX | director | 1,930 0.0213% | $36.95 | $71,314 | +13.02% | |
| 2007-12-12 | Sale | Northwest Pipe Company NWPX | director | 19,932 0.1504% | $25.58 | $509,771 | +11.9% | |
| 2007-12-11 | Sale | Northwest Pipe Company NWPX | director | 10,226 0.1153% | $37.93 | $387,831 | +12.78% | |
| 2007-12-10 | Sale | Northwest Pipe Company NWPX | director | 5,968 0.0447% | $25.50 | $152,163 | +11.51% | |
| 2007-12-07 | Sale | Northwest Pipe Company NWPX | director | 14,950 0.1549% | $35.62 | $532,538 | +10.34% | |
| 2007-12-06 | Sale | Northwest Pipe Company NWPX | director | 20,000 0.2174% | $37.01 | $740,280 | +11.4% | |
| 2007-10-31 | Sale | Northwest Pipe Company NWPX | director | 4,200 0.0328% | $26.20 | $110,027 | +13.06% | |
| 2007-10-30 | Sale | Northwest Pipe Company NWPX | director | 5,000 0.0568% | $37.60 | $188,020 | +14.48% | |
| 2007-10-29 | Sale | Northwest Pipe Company NWPX | director | 34,000 0.2614% | $26.08 | $886,686 | +11.81% | |
| 2007-09-13 | Sale | Northwest Pipe Company NWPX | director | 20,000 0.2279% | $36.16 | $723,200 | +15.62% | |
| 2007-08-22 | Sale | Northwest Pipe Company NWPX | director | 39,240 0.3447% | $28.72 | $1.13M | +9.03% |