| Year | Qtr | # Shares | Change |
|---|---|---|---|
| 2014 | Q1 | 0 | Liquidated |
| 2013 | Q4 | 6,307 | -193,456 |
| 2013 | Q3 | 199,763 | +3,766 |
| 2013 | Q2 | 195,997 | -47,654 |
| 2013 | Q1 | 243,651 | -34,951 |
| 2012 | Q4 | 278,602 | +8,927 |
| 2012 | Q3 | 269,675 | +25,101 |
| 2012 | Q2 | 244,574 | -76,441 |
| 2012 | Q1 | 321,015 | -108,873 |
| 2011 | Q4 | 429,888 | +86,624 |
| 2011 | Q3 | 343,264 | +50,782 |
| 2011 | Q2 | 292,482 | +30,147 |
| 2011 | Q1 | 262,335 |