Leonard Green Partners
Lightyear Capital

Lindsay Goldberg

Lion Capital
Littlejohn & Co.

Loral Skynet

MacAndrews & Forbes
Macquarie Capital Alliance Group
Madison Dearborn Capital Partners, LLC
Merrill Lynch Global Private Equity

Metalmark Capital 
MidOcean Partners
Morgan Stanley Principal Investments
New York Life Capital Partners

Nordic Capital

Oak Hill Capital Management
Odyssey Investment Partners

One Equity Partners
Ontario Teachers' Pension Plan

Panda
Parthenon Investors
Providence Equity Partners

Public Service Pension Board of Canada
Quad-C Management, Inc.
Ripplewood Holdings, LLC
Riverstone Holdings
S.A.C. Capital Management
Silver Lake Partners
Southern Cross Capital
SPG Partners

Stephens Capital Partners
Sterling Capital

Stone Point Capital
Sun Capital Partners

SV Life Sciences

Swander Pace Capital

TA Associates
Texas Pacific Group

TH Lee Partners
The Blackstone Group
The Carlyle Group
Torreal S.A.

Trilantic Capital (fka LBMB)

Trivest
ValueAct Capital
Veronis Suhler Stevenson

Vestar Capital Partners
Warburg Pincus
Wasserstein & Co.
Welsh, Carson, Anderson & Stowe
Wind Point Partners
Yucaipa