| 2010-12-15 | Sale | Patterson Companies, Inc. PDCO | Director & Chairman | 123,612 0.1052% | $30.40 | $3.76M | +4.5% | |
| 2010-12-14 | Sale | Patterson Companies, Inc. PDCO | Director & Chairman | 76,388 0.0648% | $30.18 | $2.31M | +4.95% | |
| 2008-02-28 | Sale | Patterson Companies, Inc. PDCO | Chairman Emeritus | 80,242 0.0604% | $36.37 | $2.92M | -15.94% | |
| 2008-02-27 | Sale | Patterson Companies, Inc. PDCO | Chairman Emeritus | 169,758 0.1287% | $36.55 | $6.2M | -15.62% | |
| 2007-06-04 | Sale | Patterson Companies, Inc. PDCO | Chairman Emeritus | 15,000 0.011% | $37.87 | $568,050 | -4.81% | |
| 2006-12-12 | Sale | Patterson Companies, Inc. PDCO | Chairman Emeritus | 12,400 0.0091% | $37.00 | $458,800 | -0.54% | |
| 2006-12-11 | Sale | Patterson Companies, Inc. PDCO | Chairman Emeritus | 27,600 0.0205% | $37.67 | $1.04M | -1.55% | |
| 2006-12-08 | Sale | Patterson Companies, Inc. PDCO | Chairman Emeritus | 60,000 0.0443% | $37.33 | $2.24M | -0.9% | |
| 2005-03-08 | Sale | Patterson Companies, Inc. PDCO | Chairman Emeritus | 8,137 0.006% | $50.66 | $412,220 | -18.15% | |
| 2005-03-07 | Sale | Patterson Companies, Inc. PDCO | Chairman Emeritus | 23,637 0.0173% | $50.86 | $1.2M | -18.32% | |
| 2005-03-04 | Sale | Patterson Companies, Inc. PDCO | Chairman Emeritus | 20,000 0.0147% | $50.62 | $1.01M | -17.61% | |
| 2005-03-03 | Sale | Patterson Companies, Inc. PDCO | Chairman Emeritus | 12,500 0.0092% | $50.16 | $627,050 | -16.87% | |
| 2005-03-02 | Sale | Patterson Companies, Inc. PDCO | Chairman Emeritus | 30,000 0.022% | $50.86 | $1.53M | -17.91% | |
| 2004-12-09 | Sale | Patterson Companies, Inc. PDCO | Chairman Emeritus | 25,000 0.018% | $41.53 | $1.04M | +4.27% | |
| 2004-12-08 | Sale | Patterson Companies, Inc. PDCO | Chairman Emeritus | 45,000 0.0327% | $41.74 | $1.88M | +4.86% | |
| 2004-06-24 | Sale | Patterson Companies, Inc. PDCO | Chairman Emeritus | 6,500 0.0095% | $74.57 | $484,705 | +14.02% | |
| 2004-06-21 | Sale | Patterson Companies, Inc. PDCO | Chairman Emeritus | 10,000 0.0148% | $75.09 | $750,910 | +14.23% | |
| 2004-06-18 | Sale | Patterson Companies, Inc. PDCO | Chairman Emeritus | 5,000 0.0074% | $76.10 | $380,500 | +13.19% | |
| 2004-06-10 | Sale | Patterson Companies, Inc. PDCO | Chairman Emeritus | 20,000 0.0291% | $77.00 | $1.54M | +8.68% | |
| 2004-06-09 | Sale | Patterson Companies, Inc. PDCO | Chairman Emeritus | 7,500 0.0112% | $77.12 | $578,400 | +10.82% |