1995
$65M
from 11 investors over 11 rounds
Athersys raised $9M on March 23, 2012
Investors: Williams Investors Llc, Piper Jaffray and First Analysis
Athersys raised $20M on November 14, 2011
Investors: Aspire Capital Partners, LLC
Athersys raised $13M on January 28, 2011
Investors: Williams Investors Llc and First Analysis
Athersys raised $65M on June 12, 2007
Investors: Tekla Healthcare Investors, OrbiMed Advisors, Pappas Capital, Radius Ventures and RA Capital Management, L.P.