| Year | Qtr | # Shares | Change |
|---|---|---|---|
| 2014 | Q3 | 29,820 | -4,900 |
| 2014 | Q2 | 34,720 | +34,720 |
| 2014 | Q1 | 0 | Liquidated |
| 2013 | Q4 | 45,745 | -1,491 |
| 2013 | Q3 | 47,236 | |
| 2013 | Q1 | 0 | Liquidated |
| 2012 | Q4 | 353,220 | -109,641 |
| 2012 | Q3 | 462,861 | +392,896 |
| 2012 | Q2 | 69,965 | -524,832 |
| 2012 | Q1 | 594,797 | -33,600 |
| 2011 | Q4 | 628,397 | |
| 2011 | Q1 | 0 | Liquidated |
| 2010 | Q4 | 478,100 |