2007
$20M
from 7 investors over 7 rounds
Leyden Energy raised $10M on January 23, 2013
Investors: Lightspeed Venture Partners and Sigma Partners
Leyden Energy raised $20M on August 3, 2011
Investors: Lightspeed Venture Partners and Sigma Partners
Leyden Energy raised $12M on October 16, 2008
Investors: Lightspeed Venture Partners
Leyden Energy raised $4.5M on June 29, 2007
Investors: Lightspeed Venture Partners and Sigma Partners