Nasdaq Welcomes Sienna Biopharmaceuticals, Inc. (Nasdaq:SNNA) to The Nasdaq Stock Market By: Nasdaq, Inc. - All News Releases July 27, 2017 at 17:14 PM EDT Nasdaq Welcomes Sienna Biopharmaceuticals, Inc. (Nasdaq:SNNA) to The Nasdaq Stock Market Read More >> Related Stocks: Sienna Biopharmaceuticals Inc