2008
$13M
from 6 investors over 6 rounds
R2 Semiconductor raised $5M on February 5, 2013
Investors: Sigma Partners and Morgenthaler
R2 Semiconductor raised $10M on February 6, 2012
Investors: Morgenthaler and Sigma Partners
R2 Semiconductor raised $13M on May 1, 2009
Investors: Sigma Partners and Morgenthaler