2002
$50M
from 11 investors over 11 rounds
CoalTek raised $750K on August 2, 2013
Investors: Braemar Energy Ventures and Lightspeed Venture Partners
CoalTek raised $50M on January 20, 2009
Investors: Element Partners, Lightspeed Venture Partners, Warburg Pincus LLC and Braemar Energy Ventures
CoalTek raised $33M on February 26, 2007
Investors: Lightspeed Venture Partners
CoalTek raised $5M on June 9, 2006
Investors: Warburg Pincus LLC and Braemar Energy Ventures
CoalTek raised $2.2M on July 13, 2005
Investors: Braemar Energy Ventures and Warburg Pincus LLC