Crosspoint Venture Partners

John Mumford co-founded Crosspoint Venture Partners in 1970. He served as the firm's general partner and primary investment decision-maker throughout its most active decades. Mumford was among the earliest venture capitalists to establish an institutional partnership on the West Coast, building a track record that spanned enterprise software, networking, and internet infrastructure.

Crosspoint historically focused on early-stage enterprise technology companies, particularly those building infrastructure software, networking hardware, and business-to-business internet applications. The firm's portfolio included Foundry Networks, Ariba, and Brocade Communications — all enterprise-facing companies that reached liquidity through public offerings or acquisitions. Crosspoint did not typically participate in consumer internet or life sciences deals.

Crosspoint's current investment activity is not publicly documented. The firm's last confirmed fundraise occurred in the early 2000s, and it has made no public announcements regarding new funds or investments in recent years. Without disclosed deployment or team updates, the firm's active status remains unclear to outside observers.

Crosspoint concentrated on Series A and Series B rounds, typically leading or co-leading investments in enterprise startups. The firm maintained a concentrated portfolio rather than a high-volume approach, with general partners holding board seats across multiple fund cycles. This allowed portfolio companies to develop toward liquidity without the pressure of short-duration fund timelines. The strategy favored infrastructure and software companies that sold to business customers.

Crosspoint's historically disclosed portfolio includes Foundry Networks (IPO 1999), Ariba (IPO 1999), and Brocade Communications (IPO 1999). Each of these companies became significant enterprise technology players in the late 1990s and early 2000s. The firm also backed Avanex and several other infrastructure and software companies during the same period, per public filings and industry records.