| Year | Qtr | # Shares | Change |
|---|---|---|---|
| 2015 | Q3 | 27,592,802 | +452,967 |
| 2015 | Q2 | 27,139,835 | -2,935,709 |
| 2015 | Q1 | 30,075,544 | +219,092 |
| 2014 | Q4 | 29,856,452 | -22,029,168 |
| 2014 | Q3 | 51,885,620 | +8,256,742 |
| 2014 | Q2 | 43,628,878 | +42,029,678 |
| 2014 | Q1 | 1,599,200 | -435,000 |
| 2013 | Q4 | 2,034,200 | +725,000 |
| 2013 | Q3 | 1,309,200 | +248,600 |
| 2013 | Q2 | 1,060,600 | +141,000 |
| 2013 | Q1 | 919,600 | +63,000 |
| 2012 | Q4 | 856,600 | +155,300 |
| 2012 | Q3 | 701,300 | +253,300 |
| 2012 | Q2 | 448,000 | +234,000 |
| 2012 | Q1 | 214,000 | |
| 2011 | Q4 | 214,000 |