| 2022-10-21 | Sale | Northwest Pipe Company NWPX | director | 1,411 0.0139% | $32.05 | $45,229 | -3.32% | |
| 2022-10-20 | Sale | Northwest Pipe Company NWPX | director | 1,133 0.0116% | $32.04 | $36,297 | +1.1% | |
| 2022-10-19 | Sale | Northwest Pipe Company NWPX | director | 1,464 0.0148% | $32.02 | $46,882 | +0.06% | |
| 2022-10-18 | Sale | Northwest Pipe Company NWPX | director | 992 0.01% | $32.02 | $31,759 | +0.13% | |
| 2022-06-15 | Sale | Northwest Pipe Company NWPX | 2,500 0.0251% | $32.09 | $80,220 | -2.02% | ||
| 2022-05-23 | Sale | Northwest Pipe Company NWPX | 3,574 0.0347% | $32.00 | $114,381 | -1.57% | ||
| 2022-05-18 | Sale | Northwest Pipe Company NWPX | 6,426 0.0681% | $32.04 | $205,860 | +7.29% | ||
| 2021-05-19 | Sale | Northwest Pipe Company NWPX | director | 6,000 0.0606% | $32.22 | $193,341 | -12.53% | |
| 2018-12-14 | Sale | Northwest Pipe Company NWPX | director | 18,892 0.1931% | $23.04 | $435,272 | +7.86% |