Investor Name	Invest Money	Lead Investor	Propotion

Announced Date	Round	Money Raised	Investors
Jun 30, 2011	Series C	$ 20M	ARCH Venture Partners,Applied Ventures,etc.	Detail
Jan 28, 2012	Series Unknown	$ 7.50M	ARCH Venture Partners,Intersouth Partners,etc.	Detail
Jun 9, 2009	Series B	$ 6.40M	ARCH Venture Partners,GVC Venture Fund,etc.	Detail
Jul 16, 2007	Series A	$ 4.10M	ARCH Venture Partners,Applied Ventures,etc.	Detail
Jan 12, 2012	Series C	$ 3M	Illinois Ventures,Morgan Creek Capital Management,etc.	Detail
Apr 4, 2013	Debt Financing	$ 2.14M		Detail
Jun 23, 2011	Debt Financing	$ 2.66M		Detail
Jan 21, 2010	Grant	$ 8.16M	National Renewable Energy Laboratory	Detail