ATHENAHEALTH, INC. FILES REGISTRATION STATEMENT FOR PROPOSED INITIAL PUBLIC OFFERING

WATERTOWN, MA (June 22, 2007) – athenahealth, Inc. today announced that it has filed a registration statement with the Securities and Exchange Commission for a proposed initial public offering of its common stock. Upon effectiveness of the registration statement, the common stock is expected to trade on the NASDAQ Global Market under the symbol “ATHN.”

Goldman, Sachs & Co. and Merrill Lynch & Co. will act as joint bookrunners for the proposed offering. Piper Jaffray & Co. and Jefferies & Company, Inc. will act as co-managers.

A registration statement relating to these securities has been filed with the Securities and Exchange Commission, but has not yet become effective. These securities may not be sold nor may offers to buy be accepted prior to the time that the registration statement becomes effective. This news 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.

The proposed offering will be made only by means of a prospectus. Once the prospectus is available, a copy may be obtained from:

Goldman, Sachs & Co.
Attention: Prospectus Department
85 Broad Street
New York, New York 10040
via email at prospectus-ny@ny.email.gs.com
via fax: (212)-902-9316

Merrill Lynch & Co.
Attention: Prospectus Department
4 World Financial Center
New York, New York 10080

Source: ATHENAHEALTH