| Date | Acquired | Amount |
|---|---|---|
| Dec 16, 2016 |
|
Undisclosed amount |
| Sep 14, 2015 |
|
$ 12,000,000 |
| Sep 02, 2015 |
|
Undisclosed amount |
| Jul 09, 2015 |
|
Undisclosed amount |
| Apr 23, 2015 |
|
Undisclosed amount |
