| 2003-10-28 | Sale | Quaker Chemical Corporation KWR | President & COO | 2,500 0.0194% | $18.75 | $46,875 | +0.12% | |
| 2003-10-23 | Sale | Quaker Chemical Corporation KWR | President & COO | 500 0.004% | $18.75 | $9,375 | +4.3% | |
| 2003-10-21 | Sale | Quaker Chemical Corporation KWR | President & COO | 3,200 0.0343% | $25.25 | $80,790 | +2.91% | |
| 2003-10-20 | Sale | Quaker Chemical Corporation KWR | President & COO | 1,250 0.0134% | $25.01 | $31,263 | +3.66% | |
| 2003-10-17 | Sale | Quaker Chemical Corporation KWR | President & COO | 15,800 0.1197% | $17.75 | $280,450 | +3.44% | |
| 2003-10-14 | Sale | Quaker Chemical Corporation KWR | President & COO | 400 0.0043% | $25.00 | $10,000 | +4.71% | |
| 2003-09-19 | Sale | Quaker Chemical Corporation KWR | President & COO | 2,730 0.0297% | $25.43 | $69,424 | +4.95% | |
| 2003-09-18 | Sale | Quaker Chemical Corporation KWR | President & COO | 6,200 0.0661% | $25.59 | $158,629 | +2.18% | |
| 2003-09-17 | Sale | Quaker Chemical Corporation KWR | President & COO | 1,200 0.013% | $26.22 | $31,460 | +1.17% | |
| 2003-09-16 | Sale | Quaker Chemical Corporation KWR | President & COO | 1,870 0.0198% | $26.56 | $49,676 | -2.12% | |
| 2003-09-15 | Sale | Quaker Chemical Corporation KWR | President & COO | 1,400 0.015% | $26.51 | $37,112 | -0.95% | |
| 2003-08-20 | Sale | Quaker Chemical Corporation KWR | President & COO | 500 0.0032% | $14.72 | $7,359 | +5.69% | |
| 2003-08-05 | Sale | Quaker Chemical Corporation KWR | President & COO | 850 0.0093% | $26.45 | $22,485 | +1.33% |