| Year | Qtr | # Shares | Change |
|---|---|---|---|
| 2015 | Q3 | 0 | Liquidated |
| 2015 | Q2 | 3,516 | +157 |
| 2015 | Q1 | 3,359 | -57 |
| 2014 | Q4 | 3,416 | -890 |
| 2014 | Q3 | 4,306 | +2,150 |
| 2014 | Q2 | 2,156 | +133 |
| 2014 | Q1 | 2,023 | -64 |
| 2013 | Q4 | 2,087 | -40 |
| 2013 | Q3 | 2,127 | -663 |
| 2013 | Q2 | 2,790 | -85 |
| 2013 | Q1 | 2,875 | -387 |
| 2012 | Q4 | 3,262 | -838 |
| 2012 | Q3 | 4,100 | -393 |
| 2012 | Q2 | 4,493 | -755 |
| 2012 | Q1 | 5,248 | -114 |
| 2011 | Q4 | 5,362 | -1,365 |
| 2011 | Q3 | 6,727 | -209 |
| 2011 | Q2 | 6,936 | +3,043 |
| 2011 | Q1 | 3,893 |