Brief: Karyopharm Therapeutics May Offer Up To $400 Million In Securities - SEC Filing
May 4 (Reuters) - Karyopharm Therapeutics Inc KPTI.O: KARYOPHARM THERAPEUTICS INC - MAY OFFER UP TO $400 MILLION IN SECURITIES - SEC FILING Source text: [ID:n0001193125-26-204130] Further company coverage: KPTI.O ((Reuters.Briefs@thomsonreuters.com;))