2007
$26M
from 6 investors over 6 rounds
AltaRock Energy raised $26M on August 1, 2008
Investors: Vulcan Capital, Advanced Technology Ventures, Khosla Ventures and Kleiner Perkins
AltaRock Energy raised $4M on July 25, 2007
Investors: Kleiner Perkins and Khosla Ventures