| 2021-12-06 | Sale | Northwest Pipe Company NWPX | director | 313 0.0032% | $28.98 | $9,071 | +3.74% | |
| 2021-11-29 | Sale | Northwest Pipe Company NWPX | director | 1,000 0.0101% | $29.62 | $29,624 | +0.61% | |
| 2021-11-22 | Sale | Northwest Pipe Company NWPX | director | 1,000 0.0101% | $30.90 | $30,897 | -3.92% | |
| 2021-11-15 | Sale | Northwest Pipe Company NWPX | director | 1,000 0.0101% | $29.24 | $29,241 | +2% | |
| 2021-08-02 | Sale | Northwest Pipe Company NWPX | director | 1,000 0.0102% | $28.08 | $28,079 | +3.31% | |
| 2021-07-26 | Sale | Northwest Pipe Company NWPX | director | 1,000 0.0101% | $28.73 | $28,728 | -0.83% | |
| 2021-07-19 | Sale | Northwest Pipe Company NWPX | director | 1,000 0.0101% | $27.24 | $27,237 | +4.41% | |
| 2021-07-06 | Sale | Northwest Pipe Company NWPX | director | 1,000 0.0101% | $27.95 | $27,949 | +1.7% | |
| 2021-06-28 | Sale | Northwest Pipe Company NWPX | director | 1,000 0.0103% | $28.99 | $28,986 | -0.61% | |
| 2021-06-21 | Sale | Northwest Pipe Company NWPX | director | 1,000 0.0101% | $28.76 | $28,761 | -1.69% | |
| 2021-06-14 | Sale | Northwest Pipe Company NWPX | director | 1,000 0.0102% | $30.08 | $30,084 | -5.54% | |
| 2021-06-07 | Sale | Northwest Pipe Company NWPX | director | 2,000 0.0203% | $31.77 | $63,538 | -11.1% | |
| 2021-06-01 | Sale | Northwest Pipe Company NWPX | director | 2,000 0.0202% | $31.57 | $63,149 | -10.68% | |
| 2021-05-24 | Sale | Northwest Pipe Company NWPX | director | 3,000 0.0306% | $33.74 | $101,220 | -15.71% | |
| 2021-05-17 | Sale | Northwest Pipe Company NWPX | director | 2,000 0.0201% | $31.73 | $63,460 | -11.54% | |
| 2021-05-10 | Sale | Northwest Pipe Company NWPX | director | 3,000 0.0307% | $32.00 | $96,014 | -10.76% | |
| 2008-07-28 | Sale | Northwest Pipe Company NWPX | director | 7,000 0.0541% | $41.71 | $291,944 | -38.19% |