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News Release

Five9 Announces Appointment of New Chief Financial Officer


Industry Veteran Barry Zwarenstein Joins Five9 Executive Team.
Company Continues Rapid Revenue Growth And Expansion.

PLEASANTON, Calif., U.S.A. – January 25, 2012 — Five9 Inc., the global leader in cloud-based call center software, announced today that technology industry veteran Barry Zwarenstein has joined the company as Chief Financial Officer. Barry brings over 35 years of experience and extensive relationships in the financial community and on Wall Street.

Mike Burkland, Chief Executive Officer of Five9, said, “Based on our tremendous revenue growth and proven innovation in the Contact Center industry, we are maintaining an extremely positive outlook for the future of Five9. Barry’s extensive experience in the equity and debt markets, his successful navigation of the IPO process for prior companies, and his leadership as CFO of multiple publicly traded technology companies, provides us with the financial leadership to capitalize further on the significant market opportunity for Five9.”

Most recently, Zwarenstein served as CFO for SMART Modular Technologies, through the $635 million purchase by Silver Lake Partners. He has also served as CFO with VeriFone Holdings Inc., Iomega Corporation, Mellanox Technologies Ltd., Acuson, and Logitech S.A. Throughout his career, Zwarenstein has led several transactions in the equity and debt markets, raising a total of $1.8B, including IPOs with VeriFone Holdings, and Logitech.

“I am excited to join Five9 during such an impressive period of growth in both revenue and overall customer base, now exceeding fourteen hundred customers,” said Barry Zwarenstein. “I look forward to working with a talented team of contact center veterans, preparing for many significant company milestones.”

About Five9

Five9 is the leading global provider of cloud-based call center software for Sales, Marketing and Support. The award-winning Five9 Virtual Call Center and Predictive Dialer serve customers of all sizes on five continents. Customers profit from Five9’s reliable, robust functionality that provides the best technology, improves agent productivity, and delivers business flexibility. For more information, visit www.Five9.com. Like Five9? Tell your friends: www.Facebook.com/CallCenterSoftware

Media Contact

Ken Osborn
Five9, Inc.
pr@five9.com