MannKind Shares Plunge After Partner Unveils Competing Soft-Mist Inhaler
MannKind Corp. stock tumbled 37% after partner United Therapeutics revealed a soft-mist inhaler described as a 'category killer' that may reduce coughing by up to 90% compared with dry powder inhalers. The device, intended to be filed for approval this year and launched next year, competes directly with the dry powder format that underpins much of …