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<ACCESSION-NUMBER>0000950103-09-002186
<TYPE>8-K
<PUBLIC-DOCUMENT-COUNT>2
<PERIOD>20090902
<ITEMS>1.01
<ITEMS>8.01
<ITEMS>9.01
<FILING-DATE>20090903
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<CONFORMED-NAME>GHL Acquisition Corp.
<CIK>0001418819
<ASSIGNED-SIC>3669
<IRS-NUMBER>000000000
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>1231
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<ACT>34
<FILE-NUMBER>001-33963
<FILM-NUMBER>091053511
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<BUSINESS-ADDRESS>
<STREET1>C/O GREENHILL & CO.
<STREET2>300 PARK AVENUE
<CITY>NEW YORK
<STATE>NY
<ZIP>10022
<PHONE>212-389-1500
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>C/O GREENHILL & CO.
<STREET2>300 PARK AVENUE
<CITY>NEW YORK
<STATE>NY
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<TYPE>8-K
<SEQUENCE>1
<FILENAME>dp14685_8k.htm
<DESCRIPTION>FORM 8-K
<TEXT>
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STATES</font></div>
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AND EXCHANGE COMMISSION</font></div>
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D.C.&#160;&#160;20549</font></div>
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8-K</font></div>
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REPORT</font></div>
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To Section 13 Or 15(d) of The Securities Exchange Act of 1934</font></div>
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      of report (Date of earliest event reported): September 2,
    2009</font></div>
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      ACQUISITION CORP.</font></div>
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appropriate box below if the Form 8-K filing is intended to simultaneously
satisfy the filing obligation of the registrant under any of the following
provisions (see General Instruction A.2. below):</font></div>
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OF CONTENTS</font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
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Information and Where to Find It</font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 18pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Participants
in the Solicitation</font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 18pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Item
1.01&#160;&#160;Entry into Material Definitive Agreements</font></div>
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8.01&#160;&#160;Other Events</font></div>
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9.01&#160;&#160;Financial Statements and Exhibits</font></div>
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TO BE INCLUDED IN THIS REPORT</font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
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INFORMATION AND WHERE TO FIND IT</font></div>
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        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">THIS
CURRENT REPORT ON FORM 8-K IS BEING MADE IN CONNECTION WITH THE PROPOSED
ACQUISITION (THE &#8220;ACQUISITION&#8221;) AND RELATED TRANSACTIONS INVOLVING GHL
ACQUISITION CORP. (&#8220;GHQ&#8221;) AND IRIDIUM HOLDINGS LLC (&#8220;IRIDIUM
HOLDINGS&#8221;).&#160;&#160;IN CONNECTION WITH THE ACQUISITION, GHQ FILED WITH THE
SECURITIES EXCHANGE COMMISSION (&#8220;SEC&#8221;) A DEFINITIVE PROXY STATEMENT AND HAS
MAILED A DEFINITIVE PROXY STATEMENT AND OTHER RELEVANT DOCUMENTS TO GHQ&#8217;S
STOCKHOLDERS.&#160;&#160;THE INFORMATION CONTAINED IN THIS COMMUNICATION IS NOT
COMPLETE AND MAY BE CHANGED.&#160;&#160;BEFORE MAKING ANY VOTING OR INVESTMENT
DECISIONS, GHQ&#8217;S STOCKHOLDERS AND OTHER INTERESTED PERSONS ARE URGED TO READ
GHQ&#8217;S DEFINITIVE PROXY STATEMENT, AND ANY AMENDMENTS THERETO, IN CONNECTION WITH
GHQ&#8217;S SOLICITATION OF PROXIES FOR THE SPECIAL MEETING TO BE HELD TO APPROVE THE
ACQUISITION AND ANY OTHER RELEVANT DOCUMENTS FILED WITH THE SEC BECAUSE THEY
WILL CONTAIN IMPORTANT INFORMATION ABOUT IRIDIUM HOLDINGS, GHQ AND THE PROPOSED
ACQUISITION.&#160;&#160;THE DEFINITIVE PROXY STATEMENT WAS MAILED TO GHQ
STOCKHOLDERS OF RECORD AS OF AUGUST 27, 2009.&#160;&#160;STOCKHOLDERS AND OTHER
INTERESTED PERSONS WILL ALSO BE ABLE TO OBTAIN A COPY OF THE DEFINITIVE PROXY
STATEMENT, WITHOUT CHARGE, AT THE SEC&#8217;S WEB SITE AT HTTP://WWW.SEC.GOV OR BY
DIRECTING A REQUEST TO:&#160;&#160;MACKENZIE PARTNERS, INC. BY CALLING
800-322-2885.</font></div>
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IN THE SOLICITATION</font></div>
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ITS DIRECTORS AND OFFICERS MAY BE DEEMED TO BE PARTICIPANTS IN THE SOLICITATION
OF PROXIES TO GHQ&#8217;S STOCKHOLDERS IN CONNECTION WITH THE
ACQUISITION.&#160;&#160;A LIST OF THE NAMES OF THOSE DIRECTORS AND OFFICERS AND
A DESCRIPTION OF THEIR INTERESTS IN GHQ IS CONTAINED IN GHQ&#8217;S REPORT ON FORM
10-K FOR THE FISCAL YEAR ENDED DECEMBER 31, 2008, AND GHQ&#8217;S DEFINITIVE PROXY
STATEMENT WHICH ARE FILED WITH THE SEC.&#160;&#160;GHQ&#8217;S STOCKHOLDERS MAY OBTAIN
ADDITIONAL INFORMATION ABOUT THE DIRECT AND INDIRECT INTERESTS OF THE
PARTICIPANTS IN THE ACQUISITION, BY SECURITY HOLDINGS OR OTHERWISE, BY READING
GHQ&#8217;S DEFINITIVE PROXY STATEMENT AND OTHER MATERIALS FILED OR TO BE FILED WITH
THE SEC WHEN SUCH INFORMATION BECOMES AVAILABLE.</font></div>
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IN THIS COMMUNICATION SHOULD BE CONSTRUED AS, OR IS INTENDED TO BE, A
SOLICITATION FOR OR AN OFFER TO PROVIDE INVESTMENT ADVISORY
SERVICES.</font></div>
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1.01 Entry into Material Definitive Agreements</font></div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
        <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 18pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">On
September 2, 2009, GHL Acquisition Corp. (&#8220;<font style="DISPLAY: inline; FONT-WEIGHT: bold">GHQ</font>&#8221;) issued a press release
announcing that it had entered into agreements (the &#8220;<font style="DISPLAY: inline; FONT-WEIGHT: bold">Share Purchase Agreements</font>&#8221;) to
repurchase 10,395,763 shares of its common stock in privately negotiated
transactions from certain of its stockholders (the &#8220;<font style="DISPLAY: inline; FONT-WEIGHT: bold">Sellers</font>&#8221;), subject to the
closing of its pending acquisition of Iridium Holdings LLC (the &#8220;<font style="DISPLAY: inline; FONT-WEIGHT: bold">Acquisition</font>&#8221;).&#160;&#160;The
Share Purchase Agreements provide that the shares will be repurchased for a
price per share equal to the greater of (i) $10.10 per share and (ii) the price
per share at which GHQ common stock is sold in a future public
offering.&#160;&#160;GHQ plans to use the proceeds from such future public
offering to finance the share repurchases.</font></div>
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Sellers of the shares to be repurchased have granted GHQ a proxy over the shares
to be repurchased, and GHQ intends to vote the repurchased shares in favor of
the Acquisition and the related proposals at the special meeting of its
stockholders scheduled for September 23, 2009.&#160;&#160;The shares subject to
the Share Purchase Agreements represent approximately 26.0% of the 40 million
shares eligible to vote at the special meeting.</font></div>
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8.01 Other Events</font></div>
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28, 2009, GHQ filed with the Securities and Exchange Commission definitive proxy
materials in connection with the Acquisition.&#160;&#160;The mailing of such
definitive proxy materials to stockholders commenced on August 31,
2009.&#160;&#160;As disclosed in the definitive proxy materials, stockholders
who elect to vote against the Acquisition and exercise their conversion rights,
as detailed in the definitive proxy materials, must deliver their shares to
GHQ&#8217;s transfer agent, American Stock Transfer &amp; Trust Company, by 12:00 pm
Eastern Time on September 23, 2009.</font></div>
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9.01&#160;&#160;Financial Statements and Exhibits</font></div>
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              <td align="left" colspan="2" valign="top" width="4%" style="PADDING-LEFT: 0pt"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">      </font>
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      Exhibits.</font></div>
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              <td align="left" valign="top" width="3%" style="PADDING-LEFT: 0pt"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
              <td align="left" valign="top" width="4%" style="PADDING-LEFT: 0pt"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
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                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">99.1</font></div>
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                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">Press
      Release, dated September 2, 2009</font></div>
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            <hr style="COLOR: black" noshade size="2">
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      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">SIGNATURES</font></div>
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      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 18pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Pursuant
to the requirements of the Securities Exchange Act of 1934, the registrant has
duly caused this report to be signed on its behalf by the undersigned hereunto
duly authorized.</font></div>
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                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">GHL
      Acquisition Corp.</font></div>
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              <td align="left" valign="top" width="12%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
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            <tr>
              <td colspan="2" valign="top" width="29%"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: arial">&#160;</font></td>
              <td valign="top" width="17%"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: arial">&#160;</font></td>
              <td align="left" colspan="3" valign="top" width="42%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
              <td align="left" valign="top" width="12%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
            </tr>
            <tr>
              <td colspan="2" valign="top" width="29%"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: arial">&#160;</font></td>
              <td valign="top" width="17%"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: arial">&#160;</font></td>
              <td align="left" colspan="3" valign="top" width="42%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
              <td align="left" valign="top" width="12%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
            </tr>
            <tr>
              <td align="left" valign="top" width="5%" style="PADDING-BOTTOM: 2px">
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">Date:</font></div>
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              <td align="left" valign="top" width="24%" style="BORDER-BOTTOM: black 2px solid">
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">September
      3, 2009</font></div>
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              <td valign="top" width="17%" style="PADDING-BOTTOM: 2px"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: arial">&#160;
    </font></td>
              <td align="left" valign="top" width="4%" style="PADDING-BOTTOM: 2px">
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">By:</font></div>
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                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">/s/
      Harold J. Rodriguez, Jr.</font></div>
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              <td align="left" valign="top" width="12%" style="PADDING-BOTTOM: 2px"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
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              <td valign="top" width="5%"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: arial">&#160;
    </font></td>
              <td valign="top" width="24%"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: arial">&#160;
    </font></td>
              <td valign="top" width="17%"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: arial">&#160;
    </font></td>
              <td valign="top" width="4%"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: arial">&#160;
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              <td valign="top" width="24%"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: arial">&#160;
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              <td valign="top" width="17%"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: arial">&#160;
    </font></td>
              <td valign="top" width="4%"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: arial">&#160;
    </font></td>
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      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
      <div id="PGBRK" style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt">
        <div id="FTR">
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          <div style="WIDTH: 100%; TEXT-ALIGN: center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">4</font></div>
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INDEX</font></div>
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      <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
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              <td align="left" valign="top" width="4%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
              <td align="left" valign="top" width="86%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
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              </td>
              <td align="left" valign="top" width="4%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
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                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">Press
      Release, dated September 2, 2009</font></div>
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      <div style="DISPLAY: block; TEXT-INDENT: 0pt; TEXT-ALIGN: center"><font style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">5</font></div>
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<TYPE>EX-99.1
<SEQUENCE>2
<FILENAME>dp14685_ex9901.htm
<DESCRIPTION>EXHIBIT 99.1
<TEXT>
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    <div style="TEXT-ALIGN: right"><font style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">Exhibit
99.1</font></div>
    <div>&#160;</div>
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                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">Contact:</font></div>
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                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">James
      Babski</font></div>
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      </font></td>
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                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">GHL
      Acquisition Corp.</font></div>
                </td>
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              <tr>
                <td valign="top" width="12%"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: times new roman">&#160;
      </font></td>
                <td align="left" valign="top" width="88%">
                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; COLOR: #0000ff; FONT-FAMILY: times new roman"><font style="DISPLAY: inline; COLOR: #0000ff">jbabski@greenhill.com</font></font></div>
                </td>
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      </font></td>
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                  <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">+1-212-372-4180</font></div>
                </td>
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      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 14pt; FONT-FAMILY: Times New Roman, serif">GHL
Acquisition Corp. Announces Share Repurchase Agreements</font></div>
      <div style="DISPLAY: block; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25"><br></div>
      <div>
        <table cellpadding="0" cellspacing="0" id="list" width="100%">
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              <td align="right" style="WIDTH: 36pt">
                <div><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 14pt;" face="Symbol, serif">&#183;&#160;&#160;</font></div>
              </td>
              <td>
                <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 14pt; FONT-FAMILY: Times New Roman, serif">10,395,763
      common shares to be repurchased at
closing</font></div>
              </td>
            </tr>
        </table>
      </div>
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                <div><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 14pt;" face="Symbol, serif">&#183;&#160;&#160;</font></div>
              </td>
              <td>
                <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 14pt; FONT-FAMILY: Times New Roman, serif">Repurchased
      shares to be voted in favor of Iridium
  acquisition</font></div>
              </td>
            </tr>
        </table>
      </div>
      <div>
        <table cellpadding="0" cellspacing="0" id="list" width="100%">
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                <div><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 14pt;" face="Symbol, serif">&#183;&#160;&#160;</font></div>
              </td>
              <td>
                <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 14pt; FONT-FAMILY: Times New Roman, serif">Proxy
      statement mailed to shareholders</font></div>
              </td>
            </tr>
        </table>
      </div>
      <div style="DISPLAY: block; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25"><br></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">NEW YORK,
September 2,&#160;&#160;2009 &#8211; GHL Acquisition Corp. (&#8220;GHL Acquisition&#8221;) (NYX:
GHQ, GHQ.U and GHQ.WS) announced today that it has entered into agreements with
certain holders of its common stock as a result of which&#160;&#160;10,395,763
million shares of GHL Acquisition common stock will be
repurchased&#160;&#160;upon closing of its acquisition of Iridium Holdings LLC
(&#8220;Iridium&#8221;).&#160;&#160;The agreements provide that the shares will be
repurchased for a price per share equal to the greater of $10.10 per share and
the price per share at which GHL Acquisition common stock are sold in a future
public offering.&#160;&#160;The sellers of the shares have also granted GHL
Acquisition a proxy over the shares to be repurchased, and GHL Acquisition
intends to vote the repurchased shares in favor of the acquisition of Iridium at
the special meeting of shareholders scheduled for September 23, 2009. The shares
subject to these agreements represent approximately 26.0% of the 40 million
shares of common stock eligible to vote on the acquisition proposal at the
special meeting.&#160;&#160;The repurchases of the shares are subject to the
closing of the Iridium acquisition and GHL Acquisition intends to use the
proceeds of a future offering of common stock to finance these repurchases. GHL
Acquisition will continue its on-going discussions with certain other holders of
its common stock regarding potential acquisitions of the shares held by such
holders on similar terms. &#160;There can be no assurance that GHL Acquisition
will acquire any additional shares of its common stock.</font></div>
      <div style="DISPLAY: block; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25"><br></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Scott L.
Bok, Chief Executive Officer of GHL Acquisition, commented: &#8220;We believe that the
share repurchases announced today, in combination with a number of steps we have
already taken, lay the groundwork for a supportive shareholder base for Iridium
following the acquisition. We have been pleased by the indications of interest
in and support for the pending acquisition of Iridium from our shareholders and
believe that providing an exit for those shareholders for whom Iridium
post-acquisition would not represent an appropriate holding is paramount to the
success of the acquisition and Iridium in the longer term.&#8221;</font></div>
      <div style="DISPLAY: block; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25"><br></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">The
special meeting of shareholders of GHL Acquisition to vote on the Iridium
acquisition is scheduled for September 23, 2009, and the proxy statement
describing the meeting has been mailed to holders of record of GHL Acquisition
common stock as of August 27, 2009.&#160;&#160;Copies of the proxy statement can
be obtained from MacKenzie Partners, Inc., by calling 800-322-2885, or from the
SEC&#8217;s website at www.sec.gov.</font></div>
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        <div>&#160;</div>
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      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">About
GHL Acquisition Corp.</font></div>
      <div style="DISPLAY: block; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25"><br></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">GHL
Acquisition is a special purpose acquisition company launched in February 2008
in an initial public offering raising $400 million of gross proceeds. Founded by
Greenhill, GHL Acquisition was formed for the purpose of acquiring, or acquiring
control of, through a merger, capital stock exchange, asset acquisition, stock
purchase, reorganization or similar business combination, one or more businesses
or assets. It currently has no operating businesses.</font></div>
      <div style="DISPLAY: block; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25"><br></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Forward-Looking
Statements and Other Disclosure</font></div>
      <div style="DISPLAY: block; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25"><br></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">This
press release contains, and GHL Acquisition&#8217;s management may make, certain
&#8220;forward-looking statements&#8221; within the meaning of the Private Securities
Litigation Reform Act of 1995. The words &#8220;anticipates,&#8221; &#8220;may,&#8221; &#8220;can,&#8221;
&#8220;believes,&#8221; &#8220;expects,&#8221; &#8220;projects,&#8221; &#8220;intends,&#8221; &#8220;likely,&#8221; &#8220;will,&#8221; &#8220;to be&#8221; and
other expressions that are predictions of or indicate future events, trends or
prospects identify forward-looking statements. These forward-looking statements
involve known and unknown risks, uncertainties and other factors that may cause
the actual results, performance or achievements of GHL Acquisition to differ
materially from any future results, performance or achievements expressed or
implied by such forward-looking statements. These risks and uncertainties
include, but are not limited to, uncertainties regarding the timing of the
proposed transaction with Iridium, whether the transaction will be approved by
GHL Acquisition&#8217;s stockholders, whether the closing conditions will be satisfied
(including receipt of regulatory approvals), as well as industry and economic
conditions, and competitive, legal, governmental and technological factors.
There is no assurance that GHL Acquisition&#8217;s expectations will be realized. If
one or more of these risks or uncertainties materialize, or if GHL Acquisition&#8217;s
underlying assumptions prove incorrect, actual results may vary materially from
those expected, estimated or projected.&#160;&#160;GHL Acquisition&#8217;s
forward-looking statements speak only as of the date of this press release or as
of the date they are made, and, except as required by law, GHL Acquisition
undertakes no obligation to update forward-looking statements.</font></div>
      <div style="DISPLAY: block; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25"><br></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">This
press release is for informational purposes only and does not constitute an
offer of any securities for sale.</font></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt; TEXT-ALIGN: center" align="left"><font style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">2</font></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt; TEXT-ALIGN: center" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&#160;</font>

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