APTO - Aptose down 18% premarket on pricing stock offering May, 30 2019 09:22 AM Aptose Biosciences Inc. Aptose Biosciences (NASDAQ:APTO) has priced its public offering of 10M common shares at $1.85 per share, for gross proceeds of $18.5M.More news on: Aptose Biosciences Inc., Healthcare stocks news, Stocks on the move, Read more ...