EX-99.1

                                                                    Exhibit 99.1
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                                   Footnotes
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(1)  The sole general partner of Warburg, Pincus Investors, L.P. ("WPI") is
     Warburg Pincus & Co., a New York general partnership ("WP"). Warburg Pincus
     LLC, a New York limited liability company ("WPLLC"), manages WPI. The
     members of WPLLC are substantially the same as the partners of WP.

     On September 30, 2003, WPI transferred certain securities held by WPI,
     including all of its shares of Common Stock of Grubb & Ellis Company (the
     "Company"), to Warburg, Pincus Investors Liquidating Trust ("WPLT"). One of
     the purposes for which WPLT was formed on September 30, 2003 was to
     liquidate all of the assets transferred to WPLT by WPI and collect and
     distribute such assets or the proceeds from the liquidation thereof to the
     partners of WPI, who are the beneficiaries of WPLT. On December 7, 2005,
     pursuant to an Agreement of Purchase and Sale of Stock, by and among WPI,
     WPLT, and the Company, WPLT sold to the Company 5,861,902 shares (the
     "Shares") of the Company's Common Stock at a price per share of $4.00.

     The trustees of WPLT are Charles R. Kaye, Joseph P. Landy, Scott A. Arenare
     and Timothy J. Curt. Charles R. Kaye and Joseph P. Landy are each a
     Managing General Partner of WP and a Managing Member and Co-President of WP
     LLC. Scott A. Arenare and Timothy J. Curt are each a Partner of WP and a
     Member and Managing Director of WP LLC. By reason of the provisions of Rule
     16a-1 of the Securities Exchange Act of 1934, as amended (the "Exchange
     Act"), WP WPLLC and WPLT may be deemed to be the beneficial owners of the
     Common Stock held by WPI although both WP and WPLLC disclaim beneficial
     ownership of the Common Stock except to the extent of any indirect
     pecuniary interest therein.

EX-99.2

                                                                    Exhibit 99.2
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                                 Filing Entities
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Designated Filer:                   Warburg, Pincus Investors, L.P.
Issuer & Ticker Symbol:             Grubb & Ellis Company (GBE)
Date of Event Requiring Statement:  December 7, 2005


1.    Name: Warburg Pincus & Co. (General Partner)
      Address: 466 Lexington Avenue
      New York, New York  10017

2.    Name: Warburg Pincus LLC (Manager of Warburg, Pincus Investors, L.P.)
      Address: 466 Lexington Avenue
      New York, New York  10017

3.    Name: Warburg, Pincus Investors Liquidating Trust
      Address:  c/o Warburg Pincus & Co.
                466 Lexington Avenue
                New York, New York  10017


                                  WARBURG PINCUS & CO.

                                  By:  /s/ Scott A. Arenare
                                  --------------------------
                                  Name:  Scott A. Arenare       Date:  12/7/05
                                  Title: Partner


                                  WARBURG PINCUS LLC

                                  By:  /s/ Scott A. Arenare
                                  --------------------------
                                  Name:  Scott A. Arenare       Date:  12/7/05
                                  Title: Member


                                  WARBURG, PINCUS INVESTORS
                                  LIQUIDATING TRUST

                                  By:  /s/ Scott A. Arenare
                                  --------------------------
                                  Name:  Scott A. Arenare       Date:  12/7/05
                                  Title: Trustee