Rincon Venture Partners

Rincon Venture Partners was a Santa Barbara, California-based early-stage venture capital firm founded in 2005 by Managing Partner Jim Andelman. During its active years the firm backed web-based businesses led by serial founding teams with proven recurring-revenue models and capital-efficient operating plans, typically serving as a company's first institutional investor. Rincon led rounds with initial checks of $500K to $1.5M, with a geographic focus on Southern California early-stage technology and selective engagement across broader US deals sourced through operator networks. The firm managed three funds under the SEC-registered investment adviser Rincon Venture Management. Across 49 portfolio companies Rincon produced at least two unicorns: MNTN, the performance marketing platform, and Writer, the enterprise AI company, which achieved unicorn status in 2024 -- seven years after Rincon's initial investment. Other notable portfolio names include Vestiaire Collective, the luxury fashion resale marketplace, and mPulse, a digital health engagement company. The portfolio's 49 companies spanned SaaS, software, AI, health technology and e-commerce, with Series A rounds averaging $4.32 million and Seed rounds averaging $2.64 million. Rincon's last publicly documented investment was in Vestiaire Collective in May 2022, after which the firm ceased new-deal activity. The platform now operates as a legacy portfolio and wind-down vehicle. Jim Andelman's investment thesis -- backing capital-efficient recurring-revenue businesses led by experienced operators at the earliest stage -- proved durable enough to produce outcomes of the scale of MNTN and Writer, validating the Southern California ecosystem as fertile ground for enterprise software companies.