Oak Investment Partners

Oak Investment Partners is a leading multi-stage venture capital firm that focuses on high-growth opportunities across several sectors, including information technology, financial services technology, healthcare, and clean energy. Founded in 1978, Oak has invested over $9 billion in more than 525 companies worldwide. The firm is known for its hands-on approach, offering comprehensive support and strategic assistance through its extensive network of industry experts. Oak's portfolio includes notable companies such as Castlight Health, Zayo Group, Kayak, Benefitfocus, and Protean Electric, among others. Their investment strategy spans early to late-stage investments, including growth equity and PIPE (private investment in public equity) investments. Oak Investment Partners has built a reputation for its ability to identify transformative opportunities and support them through long-term, steady guidance​. The firm is headquartered in Norwalk, Connecticut, with additional offices in California. The team includes experienced professionals like Managing Partners Bandel Carano, Ed Glassmeyer, Fred Harman, and Ann Lamont, who bring deep domain expertise and a consistent investment philosophy to the table​.