Waltham, MA, May 1, 2001 – Matrix Partners (http://www.matrixpartners.com), one of the nation’s leading venture capital firms, announced today that David Skok, chairman of Silverstream Software, Inc., has joined the firm as a general partner.

Skok started his first company at age 22. Now 45, Skok has founded a total of four separate companies and performed one turn around. "David Skok has a wealth of experience starting and running companies," said Timothy Barrows Matrix general partner. "He has a very clear roadmap in his mind of what a company needs to do to be successful during all the early phases and we are excited to have him join Matrix Partners. David is well connected in the Boston software community and will be able to help entrepreneurs find the top talent they need when forming their management teams."

Skok will continue as chairman of SilverStream, acting more in a board capacity than in a day-to-day role. Skok founded SilverStream in June 1996. Today SilverStream is a public company (Nasdaq:SSSW) with approximately 800 employees and offices in more than 20 countries around the world. Its products are used by many of the Global 2000, including companies such as Merck, Merrill Lynch, CNA Insurance, and ABN Amro.

Prior to the formation of SilverStream, Skok was the President and CEO of Watermark Software, a company he founded in January 1993 whose products fast became market share leaders in the document imaging marketplace. Watermark was sold in August 1995 to FileNet Corporation. Skok holds a B.Sc Honours Degree in Computer Science from the University of Sussex, England.

About Matrix Partners

Since its inception in 1977, Matrix Partners has been dedicated to helping outstanding entrepreneurs build industry leading technology companies. Matrix is focused on companies that provide products and services that drive the Net Economy with a particular emphasis on e-business solutions, Internet commerce and the communications infrastructure. With offices in the two major technology centers – Boston and Silicon Valley – Matrix has developed an exceptionally strong network of contacts and entrepreneurial know-how.

Companies that have gone public out of the Matrix portfolio in the last 18 months and that Matrix played a founding role in have generated more than $85 billion of market value. These include ArrowPoint Communications (recently acquired by Cisco), Alteon Web Systems (Nasdaq: ATON), Blue Martini Software (Nasdaq: BLUE), BeFree (Nasdaq: BFRE), OnDisplay (recently acquired by Vignette), Phone.com (Nasdaq: PHCM), SilverStream Software (Nasdaq: SSSW), Sonus Networks (Nasdaq: SONS) and Sycamore Networks (Nasdaq: SCMR).