4000 Executive Parkway, Suite 400 San Ramon, CA 94583

News Release

Five9 Announces $12 Million Financing

PLEASANTON, Calif. – March 13, 2008 – Five9, Inc., a leader in on-demand call center solutions, today announced the completion of $12 million in equity funding from leading investors Hummer Winblad Venture Partners, Partech International and Mosaic Venture Partners. Five9 will use the funding to accelerate its sales, marketing, and product development initiatives.

Five9’s leadership in delivering world-class virtual call centers spans customers on five continents in many industry sectors. Based on a solid record of reliability, Five9 offers companies software features, services, and training to become operational in as little as 72 hours. “We are enthusiastic about putting this round of funding to work and pleased that the market continues to benefit from our high-impact call center solutions. Every day our sales and service teams deploy customer-focused solutions that deliver cost savings, increased productivity, and streamlined operations to sectors such as retail, mortgage and loan, travel and transportation, and call center outsourcers. This additional funding will enable us to continue to accelerate our sales growth,” said Mike Burkland, CEO of Five9.

“Five9 has built a large installed base of customers with its history of award-winning technology backed by superior service. The company has demonstrated high sales growth and sustained leadership in the Software as a Service (SaaS) category. We look forward to continuing growth in the exciting market of on demand call centers,” said Mitchell Kertzman, Managing Director of Hummer Winblad Venture Partners and Board Member of Five9.

The on-demand Five9 Virtual Call Centre enables companies to build a comprehensive, feature-rich contact center without any hardware, software, or upfront capital expenditures. In addition to the cost savings, Five9's on-demand service allows for easy set-up and administration of at-home agents as well as single-site or distributed, multi-site centers. Built from the ground up with VoIP, any business with a PC and a broadband connection can access an affordable suite of applications including: Automatic Call Distribution (ACD), Predictive Dialer, Auto Dialer, Interactive Voice Response (IVR), Computer Telephony (CTI), Remote Agent Capabilities, Skills-based Routing, Voice Recording, Quality Monitoring, Real-time Reporting, Chat, and Centralized Management.

About Five9, Inc.

Five9 is the leading global provider of on-demand call center software for telemarketing, customer service, and business continuity. The award-winning Five9 Virtual Call Centre and Predictive Dialer serve customers of all sizes on five continents. Customers profit from Five9’s reliable, robust functionality that is fast, easy, and affordable to deploy. For more information, visit

About Hummer Winblad Venture Partners

Hummer Winblad Venture Partners was founded in 1989 as the first venture capital fund to invest exclusively in software companies. Through their history, they have invested in the pioneers and leaders of several generations of software applications, architectures, delivery methods and business models.

Hummer Winblad helps entrepreneurs build companies in desktop software, embedded systems, client-server, distributed network computing, internet, and software as a service. For more information on Hummer Winblad Venture Partners, visit

About Partech International

Founded in 1982, Partech International is a leading global venture capital firm with $850M under active management and offices in the U.S., Europe and Israel. Partech invests exclusively in Information Technology and the firm’s internationally integrated team of investing partners work together closely to find the most innovative companies demonstrating high return potential and disruptive technologies in the Software and Internet, Healthcare IT, and Communications and Component sectors. Partech has a unique 20+ year track record assisting its portfolio companies in becoming global market leaders. Some of Partech’s successful investments include: Ascend Communications, Alvarion, Business Objects, Cadence, CSG Systems, Digital Island, Informatica, Pentasafe, VeriFone and Vignette. For more information on Partech International, visit

About Mosaic Venture Partners

Mosaic Venture Partners is a venture capital fund that invests in early-stage Internet and digital technology companies. Mosaic commits to actively assist entrepreneurs in creating tangible, long-term value. Mosaic’s hands-on approach keeps them constantly involved in the success of their portfolio companies. For more information on Mosaic Venture Partners, visit

Media Contact:

Tracy Tufillaro
Five9, Inc.