2001
$22M
from 9 investors over 9 rounds
Inogen raised $20M on April 12, 2012
Investors: Novo Holdings
Inogen raised $3M on March 27, 2009
Investors: Versant Ventures
Inogen raised $13M on January 9, 2008
Investors: Versant Ventures
Inogen raised $22M on February 18, 2007
Investors: Accuitive Medical Ventures, Avalon Venture, Versant Ventures and Novo Holdings
Inogen raised $6M on June 17, 2004
Investors: Accuitive Medical Ventures and Versant Ventures