| Year | Qtr | # Shares | Change |
|---|---|---|---|
| 2017 | Q2 | 500,000 | |
| 2017 | Q1 | 500,000 | |
| 2016 | Q4 | 500,000 | |
| 2016 | Q3 | 500,000 | |
| 2016 | Q2 | 500,000 | |
| 2015 | Q4 | 0 | Liquidated |
| 2015 | Q3 | 500,000 | |
| 2015 | Q2 | 500,000 | |
| 2015 | Q1 | 500,000 | |
| 2014 | Q4 | 500,000 | |
| 2014 | Q3 | 500,000 | |
| 2014 | Q2 | 500,000 | |
| 2014 | Q1 | 500,000 | |
| 2013 | Q4 | 500,000 | |
| 2013 | Q3 | 500,000 | |
| 2013 | Q2 | 500,000 | +500,000 |
| 2013 | Q1 | 0 | Liquidated |
| 2012 | Q4 | 500,000 | |
| 2012 | Q3 | 500,000 | |
| 2012 | Q2 | 500,000 | +500,000 |
| 2012 | Q1 | 0 | Liquidated |
| 2011 | Q4 | 500,000 | |
| 2011 | Q3 | 500,000 | |
| 2011 | Q2 | 500,000 |