Portfolio profile –

Following are some of Summit’s portfolio companies:Arroyo Optics Inc. (Santa Monica, Calif.) develops and manufactures fiber optic components used in telecommunications equipment.

Co-investors included Brentwood Venture Capital and Communications Ventures.

Conxion Corp. (Santa Clara, Calif.) is an Internet service provider and application service provider offering scalable Internet access, high performance hosting and mission-critical application services to customers nationwide.

Co-investors included Tramiel Capital Inc. and Morgan Stanley Venture Partners.

Ditech Communications Corp. (Mountain View, Calif.) designs, manufactures and markets digital echo cancellers and optical amplifiers for use in telecommunications and cable TV networks. The company went public on June 9, 1999.

There were no co-investors.

DSET Corp. (Bridgewater, N.J.) is a provider of software engineering tools for the telecommunications industry. The company went public March 13, 1998.

There were no co-investors.

Emed Co. Inc. (Buffalo, N.Y.) is a distributor of safety signage and related products.

There were no co-investors.

E-Tek Dynamic Inc. (San Jose, Calif.) designs and manufactures fiber optic components including optical isolators, couplers, and Wavelength Division Multiplexers.

General Motors Corp. was a co-investor.

Finisar Corp. (Mountain View, Calif.) develops and manufactures high-speed, fiber-optic subsystems and test equipment used in data communications networks.

TA Associates Inc. was a co-investor.

Hemophilia Resources of America Inc. (Farfield, N.J.) provides coagulation products used for self-infusion and related services for the treatment and management of hemophilia.

There were no co-investors.

MCK Telecommunications Inc. (Newton, Mass, and Calgary, Canada) designs, manufactures and supports telecommunications products that extend the functionality of corporate telephone systems, or PBXs, to remote locations. The company went public Oct. 22, 1999.

There were no co-investors.

MIND CTI Ltd. (Yokneam, Israel) provides voice over the Internet protocol (VoIP), billing, accounting and management software solutions.

Oscar Gruss was a co-investor.

Stanford Microdevices Inc. (Sunnyvale, Calif.) is a fabless designer, developer and manufacturer of a broad range of high performance radio frequency and integrated circuits for wireline and wireless communications systems.

Needham Capital Partners was a co-investor.

Stride & Associates Inc. (Boston) provides information technology professionals on a permanent, full-time basis.

There were no co-investors.

Unica Technologies (Lincoln, Mass.) provides turn-key enterprise marketing automation and data mining software products and services that allow users to automate marketing programs through all traditional and Internet channels.

JMI Equity Fund was a co-investor.

WebSideStory Inc. (San Diego) provides Internet technologies and services designed to provide Web site owners with the ability to measure the effectiveness of their web presence.

TA Associates Inc. was a co-investor.

Summit Partners is located at 600 Atlantic Avenue, Suite 2800, Boston, Mass. 02210-2227. Tel. (617) 824-1000, fax: (617) 824-1100. The firm’s second headquarters is located at 499 Hamilton Avenue, Suite 200, Palo Alto, Calif. 94301. Tel. (650) 321-1166, fax: (650) 321-1188. The firm’s Web site is http://www.summitpartners.com/.