| Year | Qtr | # Shares | Change |
|---|---|---|---|
| 2021 | Q4 | 272,000 | |
| 2018 | Q3 | 0 | Liquidated |
| 2018 | Q2 | 3,117 | |
| 2015 | Q3 | 0 | Liquidated |
| 2015 | Q2 | 15,000 | +1,000 |
| 2015 | Q1 | 14,000 | |
| 2014 | Q2 | 0 | Liquidated |
| 2014 | Q1 | 1,375 | -466,700 |
| 2013 | Q4 | 468,075 | +1,100 |
| 2013 | Q3 | 466,975 | -5,420 |
| 2013 | Q2 | 472,395 | -18,580 |
| 2013 | Q1 | 490,975 | +19,400 |
| 2012 | Q4 | 471,575 | -22,165 |
| 2012 | Q3 | 493,740 | -17,730 |
| 2012 | Q2 | 511,470 | +30,630 |
| 2012 | Q1 | 480,840 | +2,900 |
| 2011 | Q4 | 477,940 | -486,900 |
| 2011 | Q3 | 964,840 | -508,360 |
| 2011 | Q2 | 1,473,200 | +559,800 |
| 2011 | Q1 | 913,400 |