Business Week Ranks Five of Summit Partners' Investments on List of Hot Growth Companies.

Business Editors

BOSTON and PALO ALTO, Calif.--(BUSINESS WIRE)--June 1, 2000

Business Week Magazine has ranked five of Summit Partners' portfolio companies on its annual Hot Growth 100 list. These five companies are Somera Communications, Inc. (NASDAQ:SMRA), Finisar Corporation (NASDAQ:FNSR), E-TEK Dynamics, Inc. (NASDAQ:ETEK), Ditech Communications, Inc. (NASDAQ:DITC) and DSET Corporation (NASDAQ:DSET). Further, three of Summit's portfolio companies are among the top 15 on the list. The Hot Growth 100 ranking of the 100 best small public companies is featured in the May 29, 2000 issue of Business Week.

Based on results in sales growth, earnings growth and return on invested capital, Business Week selected five of Summit Partners' portfolio companies. Somera Communications, Inc., a provider of telecommunications infrastructure equipment, is ranked number 2; Finisar Corporation, a provider of fiber optic subsystems and network performance test systems, is ranked number 14; E-TEK Dynamics, Inc., a manufacturer of optical networking solutions, is ranked number 15; Ditech Communications, Inc., a provider of telecommunications network equipment, is ranked number 55; and DSET Corporation, a provider of business-to-business e-commerce connectivity solutions for telecommunications, is ranked number 72.

Somera Communications, Inc. was in the top five companies in the categories of Return on Capital and Sales Growth, and E-TEK Dynamics, Inc. was in the top five in the Market Value category. Another Summit portfolio company, Powerwave Technologies Inc., (NASDAQ:PWAV), a manufacturer of amplifiers that clarify cellular phone calls, was highlighted as having the second highest two-year return on equity from the class of 1998 Hot Growth Companies.

"We are delighted to have our portfolio companies receive this recognition from Business Week," said Walter Kortschak, Managing Partner. "We congratulate them and believe that with the explosive growth in the telecommunications industry, each of these portfolio companies is positioned extraordinarily well for future growth and success."

Founded in 1984, Summit Partners has been one of the fastest growing private equity capital firms in the country. Summit has provided growth equity capital to over 200 technology and emerging growth companies. Summit has been actively involved in over 100 initial and follow-on public offerings and has assisted its portfolio companies in over 55 mergers and acquisitions. Summit Partners has over 85 employees and a capital base of over $4.0 billion and invests through its private equity, subordinated debt and hedge funds. Its principal investors are Fortune 500 corporations, pension funds, university endowments, financial institutions, and previously financed Summit entrepreneurs. Summit Partners maintains a website at www.summitpartners.com.

(C) 2000 Summit Partners, L.P. SUMMIT PARTNERS is a trademark of Summit Partners, L.P. BUSINESS WEEK is a registered trademark of McGraw-Hill, Inc.