CTST - CAT SGEN IRBT among premarket losers July, 24 2019 09:13 AM CannTrust Holdings Inc. Regulus Therapeutics (NASDAQ:RGLS) -30% after FDA suspends enrollment in Phase 1 study of RGLS4326.More news on: Regulus Therapeutics Inc., Tupperware Brands Corporation, iRobot Corporation, Stocks on the move, Read more ...