| 2007-07-25 | Sale | Gentex Corporation GNTX | V.P. Engineering | 19,500 0.0138% | $21.00 | $409,500 | -12.62% | |
| 2007-06-28 | Sale | Gentex Corporation GNTX | V.P. Engineering | 11,760 0.0071% | $16.63 | $195,534 | -2.84% | |
| 2007-05-23 | Sale | Gentex Corporation GNTX | V.P. Engineering | 37,056 0.0244% | $16.94 | $627,821 | +4.85% | |
| 2007-04-25 | Sale | Gentex Corporation GNTX | V.P. Engineering | 103,040 0.0735% | $17.95 | $1.85M | +5.67% | |
| 2007-02-14 | Sale | Gentex Corporation GNTX | V.P. Engineering | 55,976 0.04% | $17.53 | $981,131 | +8.59% | |
| 2006-03-29 | Sale | Gentex Corporation GNTX | V.P. Engineering | 35,704 0.0198% | $14.90 | $531,831 | -12.48% | |
| 2003-08-19 | Sale | Gentex Corporation GNTX | V.P. Engineering | 5,240 0.007% | $38.01 | $199,172 | +5.36% | |
| 2003-08-18 | Sale | Gentex Corporation GNTX | V.P. Engineering | 5,000 0.0066% | $37.60 | $188,000 | +5.67% | |
| 2003-06-24 | Sale | Gentex Corporation GNTX | V.P. Engineering | 14,000 0.0186% | $31.30 | $438,200 | +28.19% |