Ms. Rosenberg has been an Adjunct Professor at Northwestern University's J. L. Kellogg Graduate School of Business since 2003, and is the former President, Chief Executive Officer and Vice Chairwoman of Equity Group Investments, L.L.C., a privately held real estate investment firm. Ms. Rosenberg was Vice Chairwoman of Equity Group Investments, a private investment company, from January 2000 to October 2002, and from 1994 to January 2000, she served as President, Chief Executive Officer and a director of Equity Group Investments. Ms. Rosenberg is currently a director of Avis Budget Group, Inc., a vehicle rental company, Equity Lifestyle Properties, Inc., a real estate investment trust, Ventas, Inc., a healthcare real estate investment trust, and Nanosphere, Inc., a molecular diagnostics products company, and a trustee of Equity Residential Properties Trust, a real estate investment trust.