Press Release

UNDER ARMOUR, INC. PRICES PUBLIC OFFERING OF CLASS A COMMON STOCK

November 17, 2005 at 12:00 AM EST
UNDER ARMOUR, INC. PRICES PUBLIC OFFERING OF CLASS A COMMON STOCKBALTIMORE ­ November 17, 2005 ­ Under Armour, Inc. announced today the public offering of 12,124,000 shares of its Class A common stock at a price of $13 per share. Of the total offering, Under Armour is selling 9,500,000 shares of Class A common stock. The remaining 2,624,000 shares of Class A common stock are being sold by certain stockholders.

The underwriters have an option to purchase up to an additional 1,818,600 shares of Class A common stock from certain stockholders, at the public offering price less the underwriting discounts and commissions, to cover over-allotments.

Goldman, Sachs & Co. is acting as the lead underwriter and sole bookrunner for the offering. Additionally, CIBC World Markets and Wachovia Securities are joint lead managers, and Piper Jaffray and Thomas Weisel Partners LLC are serving as co-managers.

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 in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of such state. Any offer or sale will be made only by means of the written prospectus forming a part of the effective registration statement.

A copy of the prospectus relating to this offering may be obtained from: Goldman, Sachs & Co., 85 Broad Street, New York, New York, 10004, Attn: Prospectus Department.