INDIANAPOLIS, Aug. 6, 2013 /PRNewswire/ -- Allison Transmission Holdings Inc. (NYSE: ALSN), the world's largest manufacturer of fully-automatic transmissions for medium- and heavy-duty commercial vehicles, medium- and heavy-tactical U.S. defense vehicles and hybrid-propulsion systems for transit buses, announced today that it has priced and upsized its secondary offering from 16,600,000 to 20,700,000 shares of common stock, of which 16,000,000 are being sold to the public at $22.00 per share. The selling stockholders in the offering have granted the underwriters an option to purchase up to 3,105,000 additional shares at the public offering price, less the underwriting discounts and commissions. All of the shares of common stock offered are being sold by selling stockholders. Allison Transmission Holdings Inc. will not receive any proceeds from the sale of shares by the selling stockholders in this offering, including from any exercise by the underwriters of their option to purchase additional shares. (Logo: http://photos.prnewswire.com/prnh/20120702/DE33547LOGO ) Subject to completion of the offering, Allison Transmission Holdings Inc. will repurchase from the underwriters 4,700,000 of the 20,700,000 shares of common stock being sold by the selling stockholders. Allison Transmission Holdings Inc.'s per-share purchase price for the repurchased shares will be the same as the per-share purchase price payable by the underwriters to the selling stockholders. For the offering, BofA Merrill Lynch, Citigroup, J.P. Morgan, Barclays, Credit Suisse, and Goldman, Sachs & Co. served as joint book-running managers; Deutsche Bank Securities, Morgan Stanley, and UBS Investment Bank served as lead managers; Baird and KeyBanc Capital Markets served as senior co-managers; and Oppenheimer & Co. and SMBC Nikko served as co-managers. A registration statement relating to these securities has been filed with the Securities and Exchange Commission and became automatically effective upon filing. The offering of these securities is being made only by means of a written prospectus forming part of the effective registration statement. A copy of the final prospectus related to the offering will be filed with the Securities and Exchange Commission, which may be obtained, when available, from BofA Merrill Lynch, 222 Broadway, New York, NY 10038, Attn: Prospectus Department, or e-mail email@example.com; Citigroup, c/o Broadridge Financial Solutions, 1155 Long Island Avenue, Edgewood, NY 11717 (tel: 800-831-9146); and J.P. Morgan Securities LLC, Attention: Broadridge Financial Solutions, 1155 Long Island Avenue, Edgewood, NY 11717, telephone: 866-803-9204. This press release shall not constitute an offer to sell or the solicitation of an offer to buy, nor shall there be any sale of these securities in any state or jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction.