Founded in 1984, Sigma Partners is a leading early-stage venture capital firm. The Sigma team uses their deep operational experience to provide entrepreneurs with practical strategic counsel through every phase of company growth. With over $1.5 billion under management and bicoastal offices, Sigma invests in innovative technology startups across the United States. Some of the market leading companies Sigma has invested in include: Atria, Cascade, Clarify, Internet Security Systems, KLA-Tencor, Octel, VeriFone, Vermeer, and Vignette.

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Granite Ventures has been helping early-stage technology companies build solid foundations for success since 1992. The company focuses investments on two sectors where its partners have deep domain expertise, broad industry knowledge, and significant investment experience: Communications and Components and Software. Granite has managed over $700 million in venture capital and has invested in more than 80 private companies. The company partners with promising and successful entrepreneurs to create businesses that have a competitive edge, and helps them achieve category leadership.