- AXA Secondary Fund
- Bank of America
- Bankhaus H. Aufhaeuser
- CIT
- Den Danske Bank
- Family Offices & Individuals
- Farm Bureau Life Insurance Company
- GE Capital
- General Trust Company LTD.
- Henry J. Kaiser Family Foundation
- KME Management Services
- Babson Capital / MassMutual Life
- Minnesota Mutual Life
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- Okabena Partnership V-5, V-10
- Paul Capital Partners
- Penn Mutual Life Insurance
- PNC
- PPM America
- SMC Venture Capital Fund
- SO. PA. F International S.A.
- Stephens Capital Partners
- United Technologies - Master Retirement Trust
- Venture Capital Fund of America
- Washington National Insurance Company
- Wisconsin Alumni Research Foundation
- Numerous Family Offices and Individuals
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