1998
$75M
from 8 investors over 8 rounds
Ironwood Pharmaceuticals raised $50M on March 1, 2007
Investors: Venrock
Ironwood Pharmaceuticals raised $75M on February 1, 2006
Investors: Venrock
Ironwood Pharmaceuticals raised $50M on May 1, 2004
Investors: Venrock and GGV Capital
Ironwood Pharmaceuticals raised $26M on April 1, 2002
Investors: F-Prime Capital Partners and Venrock
Ironwood Pharmaceuticals raised $23M on November 1, 2000
Investors: Venrock
Ironwood Pharmaceuticals raised $10M on January 1, 1999
Investors: Venrock