2010
$40M
from 7 investors over 7 rounds
Sienna Biopharmaceuticals raised $40M on April 24, 2017
Investors: Omega Funds, - and ARCH Venture Partners
Sienna Biopharmaceuticals raised $12M on July 12, 2016
Investors: Two River, ARCH Venture Partners and -
Sienna Biopharmaceuticals raised $34M on April 28, 2016
Investors: ARCH Venture Partners