San Ramon, Calif. – March 3, 2014 – Five9, Inc. ("Five9") today filed a registration statement on Form S-1 with the U.S. Securities and Exchange Commission ("SEC") relating to a proposed initial public offering of shares of its common stock. The number of shares to be offered and the price range for the offering have not been determined.

J.P. Morgan Securities LLC and Barclays Capital Inc. will be lead joint book-running managers for the offering, with BofA Merrill Lynch also acting as book-running manager. Pacific Crest Securities, Canaccord Genuity and Needham & Company will act as co-managers. The offering will be made only by means of a prospectus. A copy of the preliminary prospectus, when available, may be obtained from: J.P. Morgan Securities LLC, Attention: Broadridge Financial Solutions, 1155 Long Island Avenue, Edgewood, NY 11717 or by telephone at (866) 803-9204; Barclays Capital Inc., c/o Broadridge Financial Solutions, 1155 Long Island Avenue, Edgewood, New York 11717, email: Barclaysprospectus@broadridge.com, telephone: (888) 603-5847; or BofA Merrill Lynch, 222 Broadway, 7th Floor, New York, NY 10038, Attn: Prospectus Department, email: dg.prospectus_requests@baml.com.

A registration statement relating to these securities has been filed with the SEC, but has not yet become effective. These securities may not be sold, nor may offers to buy be accepted, prior to the time 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.

About Five9
Five9 is a pioneer and leading provider of cloud software for contact centers.

Media Contact:
Katie O'Connell,
Five9, Inc.
925-983-2191
Katie.oconnell@five9.com

Investor Relations Contact:
Lisa Laukkanen,
The Blueshirt Group
415-217-4967
Lisa@blueshirtgroup.com