| Date | Round | Amount | Investors |
|---|---|---|---|
| Oct 12, 2017 | Secondary Market | Undisclosed amount | |
| Sep 05, 2017 | Series F | $ 250,000,000 | |
| Oct 13, 2016 | Grant | $ 1,700,000 | |
| Jul 03, 2015 | Series E | $ 115,000,000 | |
| Jul 01, 2014 | Grant | $ 1,400,000 | |
| Dec 21, 2012 | Series D | $ 50,000,000 | |
| Jan 07, 2011 | Series C | $ 9,000,000 | |
| Nov 01, 2010 | Series C | $ 22,220,289 | |
| Dec 23, 2009 | Series B | $ 14,200,000 |
|
| Jun 18, 2009 | Series B | $ 13,600,000 | |
| Oct 03, 2007 | Series A | $ 8,953,320 |