Blumberg Capital

Founder and Managing Partner David Blumberg leads the firm alongside Managing Partner Jon Soberg. Investment decisions are made by the partnership, with sector leads driving sourcing and diligence within their respective domains. The firm's flat partnership structure means deal sponsors typically see investments through from initial thesis development to board involvement.

Blumberg Capital operates with full investment teams in both San Francisco and Tel Aviv, giving the firm ground-level access to founders in two of the world's densest enterprise technology ecosystems. The partnership applies a theme-driven research approach — identifying structural shifts in cybersecurity, data infrastructure, and financial services — and building relationships with founders and technical talent before companies formally raise. This bilateral model predates most competing cross-border strategies by over a decade.

Blumberg Capital is an independent institutional venture capital firm, not a family office. It raises discretionary funds from external limited partners and invests on behalf of those LPs, operating under a standard venture capital management-company structure with carried interest and management fees. David Blumberg is the founder and controlling partner, but the firm has no connection to a single-family wealth pool.

Blumberg Capital invests exclusively through direct equity investments in portfolio companies, primarily at the seed and Series A stages. The firm does not operate as a fund-of-funds and does not allocate capital to other venture capital managers. It leads and co-leads rounds, taking board seats and reserving capital for follow-on investments in select portfolio companies through later funding rounds.

The firm targets seed and Series A investments, with initial check sizes typically ranging from $1 million to $10 million depending on the opportunity and syndicate composition. Blumberg Capital reserves substantial capital for follow-on investments, supporting portfolio companies through Series B and beyond when the initial thesis continues to hold and the company executes against milestones.

Blumberg Capital does not invest in consumer social media, hardware-intensive businesses requiring significant manufacturing capital, biotechnology, or traditional energy. The partnership focuses tightly on enterprise technology subsectors — cybersecurity, fintech, insurtech, digital health IT, and enterprise software infrastructure — and avoids areas where it lacks domain expertise or where the capital requirements and risk profile diverge from its early-stage venture model.

Blumberg Capital is an independent firm and not a spinout or subsidiary of any larger financial institution or venture platform. Its longevity in the Israel-US corridor — operating since 1991 with a dedicated Tel Aviv office — means the partnership has deep co-investor relationships across both ecosystems, frequently syndicating with other early-stage firms that have similar cross-border capabilities. The firm operates independently from the Israeli venture firms founded by other early ecosystem builders, though it shares overlapping deal history with many of them.