| 2022-10-28 | Sale | Northwest Pipe Company NWPX | director | 712 0.0071% | $34.01 | $24,214 | -8.58% | |
| 2022-10-27 | Sale | Northwest Pipe Company NWPX | director | 1,851 0.0191% | $34.00 | $62,937 | -5.07% | |
| 2022-10-19 | Sale | Northwest Pipe Company NWPX | director | 1,467 0.0148% | $32.01 | $46,957 | +0.06% | |
| 2022-10-18 | Sale | Northwest Pipe Company NWPX | director | 634 0.0064% | $32.03 | $20,307 | +0.13% | |
| 2020-03-11 | Northwest Pipe Company NWPX | director | 2,000 0.0209% | $25.32 | $50,640 | +9.01% | ||
| 2013-05-30 | Sale | Northwest Pipe Company NWPX | director | 3,770 0.0396% | $27.47 | $103,562 | +26.52% | |
| 2013-05-28 | Sale | Northwest Pipe Company NWPX | director | 6,230 0.0669% | $27.78 | $173,080 | +27.81% |