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Rosetta Stone Inc. Announces Pricing of its Initial Public Offering

2009 April, 15

Rosetta Stone Inc. Announces Pricing of its Initial Public Offering

Rosetta Stone Inc. today announced the initial public offering of 6,250,000 shares of its common stock at $18.00 per share. The shares will begin trading on the New York Stock Exchange on April 16, 2009 under the ticker symbol “RST.” Rosetta Stone is offering 3,125,000 shares of common stock and selling stockholders are offering the remaining 3,125,000 shares in the offering. The underwriters have a 30-day option to purchase up to an additional 937,500 shares from the selling stockholders to cover over-allotments, if any.

Morgan Stanley & Co. Incorporated and William Blair & Company, L.L.C. are acting as joint book-running managers for the offering. Jefferies & Company, Inc., Piper Jaffray & Co. and Robert W. Baird & Co. Incorporated are the co-managers of the offering. The public offering is being made only by means of a prospectus, copies of which may be obtained from either:

Morgan Stanley & Co. Incorporated, Attention: Prospectus Department, 180 Varick Street, 2nd Floor, New York, New York, 10014, telephone (866) 718-1649, or by e-mailing prospectus@morganstanley.com; or William Blair & Company, L.L.C., Attention: Prospectus Department, 222 West Adams, Chicago, Illinois 60606, telephone (800) 621-0687.

A registration statement relating to shares of the common stock of Rosetta Stone has been declared effective by the Securities and Exchange Commission. This press release shall not constitute an offer to sell or a solicitation of an offer to buy, nor shall there be any sale of these securities in any state or jurisdiction in which such an offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction.

About Rosetta Stone Inc.

Rosetta Stone Inc. is a leading provider of technology-based language learning solutions consisting of software, online services and audio practice tools, primarily under the Rosetta Stone brand. Rosetta Stone offers its self-study language learning solutions in 31 languages. Its customers include individuals, educational institutions, armed forces, government agencies and corporations.

Source: Rosetta Stone Inc.

Rosetta Stone Inc.

Investors:

Christopher Martin

cmartin@rosettastone.com

OR

Media:

Rebecca Barr +44 207 819 1296

rbarr@rosettastone.com