MannKind Announces Proposed Public Offering of Common Stock and Warrants

MannKind Corporation (NASDAQ: MNKD) today announced that it intends to offer and sell, subject to market and other conditions, shares of its common stock and warrants to purchase shares of its common stock in an underwritten public offering. There can be no assurance as to whether or when the offering may be completed, or as to the actual size or terms of the offering. Jefferies & Company, Inc. and Piper Jaffray & Co. are acting as joint book-running managers for the offering. The securities described above are being offered by MannKind pursuant to a shelf registration statement previously filed with the Securities and Exchange Commission (the “SEC”), which the SEC declared effective on September 24, 2012. A preliminary prospectus supplement related to the offering will be filed with the SEC and will be available on the SEC's website located at http://www.sec.gov. Copies of the preliminary prospectus supplement and the accompanying prospectus relating to this offering, when available, may be obtained from Jefferies & Company, Inc., Attention: Equity Syndicate Prospectus Department, 520 Madison Avenue, 12th Floor, New York, NY 10022, or by telephone at 877-547-6340, or by email at Prospectus_Department@Jefferies.com, or from Piper Jaffray & Co., Attention: Prospectus Department, 800 Nicollet Mall, J12S03, Minneapolis, MN 55402, or by telephone at 800-747-3924, or by email at prospectus@pjc.com. Concurrently with the public offering described above, MannKind intends to issue to The Mann Group LLC, an entity controlled by MannKind's chief executive officer and principal stockholder, Alfred E. Mann, restricted shares of its common stock and warrants to purchase shares of its common stock in exchange for cancellation of outstanding debt, with such transaction to be effected in a separate private placement exempt from registration pursuant to Section 4(2) of the Securities Act of 1933, as amended. The public offering of common stock and warrants and the private sale of common stock and warrants to The Mann Group are being conducted as separate transactions and are not contingent upon each other. This press release shall not constitute an offer to sell or the solicitation of an offer to buy these securities, nor shall there be any sale of these securities in any state or other jurisdiction in which such offer, solicitation or sale would be unlawful prior to the registration or qualification under the securities laws of any such state or other jurisdiction.