| Allied Waste |
| Barclays |
| Cisco Systems |
| Citadel Investment Group |
| Credit Suisse |
| Dana Corporation |
| EMC |
| E*Trade |
| Fidelity |
| First Solar |
| General Electric |
| H.J. Heinz |
| IBM |
| Lincoln Financial Group |
| Motorola |
| Restoration Hardware |
| Toys R Us |
| TXU |
| Unisource |
| |
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| |
| |
| |
| |
| |
| |
|
| AEA Investors |
| Ares Management |
| Atlas Venture |
| Bain Capital |
| Bear Growth Capital Partners |
| The Blackstone Group |
| The Carlyle Group |
| Centerbridge Partners |
| EdgeStone Capital Partners |
| Elevation Partners |
| First Reserve |
| Frontenac Company |
| FT Ventures |
| Goldman Sachs |
| Hammond Kennedy Whitney |
| Icahn Associates |
| Investcorp |
| Kohlberg Kravis Roberts & Co |
| McNally Capital |
| New Mountain Capital |
| Pouschine Cook Capital Management |
| Starwood Capital |
| Sterling Partners |
| The Pritzker Group |
| TPG |
| Warburg Pincus |
| Welsh, Carson, Anderson & Stowe |
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