MannKind Corporation (MannKind) is a development-stage biopharmaceutical company. The Company is focused on the discovery, development and commercialization of therapeutic products for diseases such as diabetes and cancer. The Company�s product candidate, AFREZZA (insulin human) inhalation powder, is insulin that is in late-stage clinical investigation for the treatment of adults with type I or type II diabetes for the control of hyperglycemia. The AFREZZA inhalation powder is centered on a class of potential of hydrogen (pH)-sensitive organic molecules. AFREZZA utilizes its Technosphere formulation technology. As of December 31, 2011, MannKind had not generated any product revenues. As of December 31, 2011, the AFREZZA clinical program had involved 61 different studies of AFREZZA and over 5,600 adult patients.