Three Bridges Capital

Konstantin Sidorov, the firm's founder and CEO, leads all investment decisions. The firm operates with a lean team structure typical of discretionary single-family offices, where the principal personally evaluates each opportunity rather than delegating to a large investment committee.

Three Bridges sources through a distributed network anchored by its three offices in San Francisco, Rochester, and Minneapolis. The firm frequently co-invests alongside top-tier Sand Hill Road venture funds, leveraging GP relationships for curated access. Its presence in Rochester and Minneapolis is distinctive, potentially unlocking deal flow tied to university research and medical-device clusters that Bay Area investors routinely miss.

Three Bridges is a single-family office, not an institutional fund manager. It does not raise outside capital, charge management fees, or operate under a traditional fund structure. Its investment pace and holding periods are governed by the Sidorov family's own liquidity preferences, giving it permanent-capital flexibility that venture firms with 10-year fund lives do not have.

The firm's known activity emphasizes direct co-investments in late-stage companies, but single-family offices of this profile frequently allocate a portion of capital to venture fund commitments to deepen deal-flow relationships. Three Bridges has not publicly disclosed the split between direct investments and LP commitments.

Three Bridges focuses on late-stage venture and growth equity rounds — Series C through pre-IPO — where enterprise traction is established and the risk-return profile aligns with single-family-office capital that prizes capital preservation alongside upside. The firm generally avoids pure seed-stage risk.

Based on its known sector tags, Three Bridges concentrates on enterprise software, fintech, and digital health. It has no observable footprint in consumer internet, hard-tech manufacturing, or life-sciences therapeutics, suggesting a deliberate avoidance of capital-intensive or long-clinical-timeline categories where family offices lack a structural advantage.

The Rochester and Minneapolis offices likely serve both origination and operational-support functions. Rochester is home to the University of Rochester's strong optics and imaging research, while Minneapolis anchors a dense medical-device ecosystem with companies like Medtronic and Boston Scientific. These geographies are undercovered by coastal venture funds, giving a family office with local presence a structural sourcing edge.