Investor Name	Invest Money	Lead Investor	Propotion
General Motors	-	Yes	-	Detail

Announced Date	Round	Money Raised	Investors
Feb 15, 2022	Post-IPO Debt	$ 100M	Koch Strategic Platforms	Detail
Oct 8, 2010	Series Unknown	$ 21.50M	Arcapita Ventures,Argonaut Private Equity,etc.	Detail
Jun 20, 2002	Series B	$ 8M	RockPort Capital	Detail
May 17, 2001	Series A	$ 4M	RockPort Capital	Detail
Apr 5, 2005	Series D	$ 50M	Lehman Brothers,Reservoir Capital Group,etc.	Detail
Jun 16, 2011	Series Unknown	$ 30M		Detail
Jun 27, 2012	Debt Financing	$ 10M	Arcapita Ventures,Argonaut Private Equity,etc.	Detail
May 17, 2013	Debt Financing	$ 22.50M		Detail
Dec 21, 2011	Debt Financing	$ 15M		Detail
Jun 1, 2016	Grant	$ 2.75M	ARPA-E	Detail
Jun 25, 2008	Series D	$ 37M	Arcapita Ventures,Lehman Brothers,etc.	Detail
Feb 22, 2022	Post-IPO Equity	$ 50M	Koch Strategic Platforms	Detail
Dec 24, 2003	Series C	$ 18.50M	RockPort Capital	Detail
Jun 13, 2014	IPO	$ 82.50M		Detail