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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt; TEXT-ALIGN: center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">As
filed with the Securities and Exchange Commission on July 23, 2008</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.5; MARGIN-RIGHT: 0pt; TEXT-ALIGN: right" align="left"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&#160;Registration
No. 333-_______</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt">
      <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.5; MARGIN-RIGHT: 0pt; TEXT-ALIGN: center">
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        <hr style="MARGIN-TOP: -10px; COLOR: #000000" noshade size="1"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 12pt; FONT-FAMILY: Times New Roman">UNITED
STATES<br></font><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 12pt; FONT-FAMILY: Times New Roman">SECURITIES
AND EXCHANGE COMMISSION</font></div>
    </div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt; TEXT-ALIGN: center" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">WASHINGTON,
D.C. 20549</font><br></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="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 12pt; FONT-FAMILY: Times New Roman">FORM
S-8</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">REGISTRATION
STATEMENT</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">UNDER
THE SECURITIES ACT OF 1933</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 8pt; FONT-FAMILY: Times New Roman">________________</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: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 12pt; FONT-FAMILY: Times New Roman">AMBAC
FINANCIAL GROUP, INC.</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: Times New Roman">(Exact
name of Registrant as specified in its charter)</font><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div>
      <table cellpadding="0" cellspacing="0" width="100%">
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            <td valign="middle" width="27%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">Delaware</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 8pt; FONT-FAMILY: times new roman">(State
      or other jurisdiction of <br>incorporation or
organization)</font></div>
            </td>
            <td valign="middle" width="27%"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: times new roman">&#160;
      </font></td>
            <td valign="middle" width="27%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">13-3621676</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 8pt; FONT-FAMILY: times new roman">(I.R.S.
      Employer</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 8pt; FONT-FAMILY: times new roman">Identification
      Number)</font></div>
            </td>
          </tr>
          <tr>
            <td valign="middle" width="27%"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: times new roman">&#160;
      </font></td>
            <td valign="middle" width="27%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">One
      State Street Plaza</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">New
      York, New York&#160;&#160;10004</font></div>
            </td>
            <td valign="middle" width="27%"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: times new roman">&#160;
      </font></td>
          </tr>
      </table>
    </div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 8pt; FONT-FAMILY: Times New Roman">(Address
of Registrant's principal executive offices)</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: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Ambac
1997 Equity Plan</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Ambac
1997 Non-Employee Directors Equity Plan</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 8pt; FONT-FAMILY: Times New Roman">(Full
title of the plan)</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">_______________</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: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Anne
Gill Kelly, Esq.</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Managing
Director, Corporate Secretary</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">and
Assistant General Counsel</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Ambac
Financial Group, Inc.</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">One
State Street Plaza</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">New
York, NY 10004</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">(212)
208-3355</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">(Name,
address and telephone number of agent for service)</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">_______________</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Copies
to:</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">George
Spera, Esq.</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Shearman
&amp; Sterling</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">599
Lexington Avenue, New York, NY 10022</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">(212)
848-4000</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="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">CALCULATION
OF REGISTRATION FEE</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div>
      <table cellpadding="0" cellspacing="0" width="100%">
          <tr>
            <td nowrap valign="top" width="28%" style="BORDER-TOP: black 4.5pt double; BORDER-BOTTOM: black 4px double">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 8pt; FONT-FAMILY: times new roman">Title
      of Securities to be<br></font><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 8pt; FONT-FAMILY: times new roman">Registered</font></div>
            </td>
            <td nowrap valign="top" width="12%" style="BORDER-TOP: black 4.5pt double; BORDER-LEFT: black 1.5pt solid; BORDER-BOTTOM: black 4px double">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 8pt; FONT-FAMILY: times new roman">Amount
      to be<br></font><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 8pt; FONT-FAMILY: times new roman">Registered
      (1)</font></div>
            </td>
            <td nowrap valign="top" width="13%" style="BORDER-TOP: black 4.5pt double; BORDER-LEFT: black 1.5pt solid; BORDER-BOTTOM: black 4px double">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 8pt; FONT-FAMILY: times new roman">Proposed
      Maximum<br>Offering Price per </font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 8pt; FONT-FAMILY: times new roman">Share(2)</font></div>
            </td>
            <td nowrap valign="top" width="13%" style="BORDER-TOP: black 4.5pt double; BORDER-LEFT: black 1.5pt solid; BORDER-BOTTOM: black 4px double">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 8pt; FONT-FAMILY: times new roman">Proposed
      Maximum<br></font><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 8pt; FONT-FAMILY: times new roman">Aggregate
      Offering <br>Price(2)</font></div>
            </td>
            <td nowrap valign="top" width="11%" style="BORDER-TOP: black 4.5pt double; BORDER-LEFT: black 1.5pt solid; BORDER-BOTTOM: black 4px double">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 8pt; FONT-FAMILY: times new roman">Amount
      of<br></font><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 8pt; FONT-FAMILY: times new roman">Registration
      Fee</font></div>
            </td>
          </tr>
          <tr>
            <td align="left" nowrap valign="top" width="28%">
              <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: 8pt; FONT-FAMILY: Times New Roman">Common
      Stock, U.S.$0.01 par value per share:&#160;</font></div>
            </td>
            <td valign="top" width="12%" style="BORDER-LEFT: black 1.5pt solid"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: times new roman">&#160;
      </font></td>
            <td valign="top" width="13%" style="BORDER-LEFT: black 1.5pt solid"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: times new roman">&#160;
      </font></td>
            <td valign="top" width="13%" style="BORDER-LEFT: black 1.5pt solid"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: times new roman">&#160;
      </font></td>
            <td valign="top" width="11%" style="BORDER-LEFT: black 1.5pt solid"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: times new roman">&#160;
      </font></td>
          </tr>
          <tr>
            <td align="left" valign="top" width="28%" style="PADDING-LEFT: 0pt">
              <div style="DISPLAY: block; MARGIN-LEFT: 18pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: Times New Roman">Ambac
      1997 Equity Plan</font></div>
            </td>
            <td valign="top" width="12%" style="BORDER-LEFT: black 1.5pt solid">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: Times New Roman">6,000,000</font></div>
              <div style="DISPLAY: block; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25">&#160;</div>
            </td>
            <td valign="top" width="13%" style="BORDER-LEFT: black 1.5pt solid">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: times new roman">$2.14</font></div>
              <div style="DISPLAY: block; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25">&#160;</div>
            </td>
            <td valign="top" width="13%" style="BORDER-LEFT: black 1.5pt solid">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: times new roman">$12,840,000</font></div>
              <div style="DISPLAY: block; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25">&#160;</div>
            </td>
            <td valign="top" width="11%" style="BORDER-LEFT: black 1.5pt solid">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: times new roman">$504.61</font></div>
              <div style="DISPLAY: block; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25">&#160;</div>
            </td>
          </tr>
          <tr>
            <td align="left" valign="top" width="28%" style="PADDING-LEFT: 0pt">
              <div style="DISPLAY: block; MARGIN-LEFT: 18pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: Times New Roman">Ambac
      1997 Non-Employee Directors</font><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: Times New Roman">&#160;Equity
      Plan</font></div>
            </td>
            <td valign="top" width="12%" style="BORDER-LEFT: black 1.5pt solid">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: times new roman">79,975</font></div>
              <div style="DISPLAY: block; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25">&#160;</div>
            </td>
            <td valign="top" width="13%" style="BORDER-LEFT: black 1.5pt solid">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: times new roman">$2.14</font></div>
              <div style="DISPLAY: block; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25">&#160;</div>
            </td>
            <td valign="top" width="13%" style="BORDER-LEFT: black 1.5pt solid">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: times new roman">$171,146.50</font></div>
              <div style="DISPLAY: block; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25">&#160;</div>
            </td>
            <td valign="top" width="11%" style="BORDER-LEFT: black 1.5pt solid">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: times new roman">$6.73</font></div>
              <div style="DISPLAY: block; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25">&#160;</div>
            </td>
          </tr>
          <tr>
            <td valign="top" width="28%"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: times new roman">&#160;
      </font></td>
            <td valign="top" width="12%" style="BORDER-LEFT: black 1.5pt solid">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: times new roman">120,025</font></div>
              <div style="DISPLAY: block; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25">&#160;</div>
            </td>
            <td valign="top" width="13%" style="BORDER-LEFT: black 1.5pt solid">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: times new roman">$2.63</font></div>
            </td>
            <td valign="top" width="13%" style="BORDER-LEFT: black 1.5pt solid">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: times new roman">$315,665.75</font></div>
            </td>
            <td valign="top" width="11%" style="BORDER-LEFT: black 1.5pt solid">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: times new roman">$12.41</font></div>
            </td>
          </tr>
          <tr>
            <td align="left" valign="top" width="28%" style="BORDER-BOTTOM: black 4px double">
              <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: 8pt; FONT-FAMILY: Times New Roman">TOTAL:</font></div>
            </td>
            <td valign="top" width="12%" style="BORDER-LEFT: black 1.5pt solid; BORDER-BOTTOM: black 4px double">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: times new roman">6,200,000</font></div>
              <div style="DISPLAY: block; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25">&#160;</div>
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      </font></td>
            <td valign="top" width="13%" style="BORDER-LEFT: black 1.5pt solid; BORDER-BOTTOM: black 4px double">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: times new roman">$13,326,812.25</font></div>
              <div style="DISPLAY: block; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25">&#160;</div>
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            <td valign="top" width="11%" style="BORDER-LEFT: black 1.5pt solid; BORDER-BOTTOM: black 4px double">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: times new roman">$523.75</font></div>
              <div style="DISPLAY: block; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25">&#160;</div>
            </td>
          </tr>
      </table>
    </div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div>
      <hr style="MARGIN-TOP: -5px; COLOR: #000000" noshade size="1">
      <hr style="MARGIN-TOP: -13px; COLOR: #000000" noshade size="4">
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    <div id="PGBRK" style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt">
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      <div id="PN" style="PAGE-BREAK-AFTER: always">
        <div style="WIDTH: 100%; TEXT-ALIGN: center">
        </div>
        <div style="WIDTH: 100%; TEXT-ALIGN: center">
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      <div id="HDR">
        <div id="GLHDR" style="WIDTH: 100%" align="right">
        </div>
      </div>
    </div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div>
      <table align="center" border="0" cellpadding="0" cellspacing="0" id="hangingindent" width="100%">
          <tr valign="top" style="LINE-HEIGHT: 1.25;">
            <td style="WIDTH: 18pt">
              <div><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: Times New Roman">&#160;
      </font></div>
            </td>
            <td style="WIDTH: 36pt">
              <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">(1)</font></div>
            </td>
            <td>
              <div align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">This
      registration statement on Form S-8 (this <font style="DISPLAY: inline; FONT-FAMILY: Times New Roman">&#8220;</font><font style="DISPLAY: inline; TEXT-DECORATION: underline">Registration
      Statement</font><font style="DISPLAY: inline; FONT-FAMILY: Times New Roman">&#8221;</font>) is being
      filed to register (i) 6,000,000 shares of common stock, U.S.$0.01 par
      value per share (&#8220;<font style="DISPLAY: inline; TEXT-DECORATION: underline">Common Stock</font>&#8221;),
      of Ambac Financial Group, Inc. (the &#8220;<font style="DISPLAY: inline; TEXT-DECORATION: underline">Company</font>&#8221;)
      available for issuance&#160;under the Ambac 1997 Equity Plan (the &#8220;<font style="DISPLAY: inline; TEXT-DECORATION: underline">Equity Plan</font>&#8221;)
      and (ii) 200,000 shares of Common Stock of the Company available for
      issuance under the Ambac 1997 Non-Employee Directors Equity Plan (the
      &#8220;<font style="DISPLAY: inline; TEXT-DECORATION: underline">Directors
      Plan</font>&#8221;).&#160;&#160;Pursuant to Rule 416(c) under the Securities Act
      of 1933 (the &#8220;<font style="DISPLAY: inline; TEXT-DECORATION: underline">Securities
      Act</font>&#8221;), this Registration Statement also covers&#160;such number of
      additional shares that may become available for purchase pursuant to the
      Equity Plan and the Directors Plan in the event of certain changes in the
      outstanding shares of Common Stock, including reorganizations, mergers,
      recapitalizations, restructurings, stock dividends, stock splits, reverse
      stock splits and reclassifications.</font></div>
            </td>
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    </div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div>
      <table align="center" border="0" cellpadding="0" cellspacing="0" id="hangingindent" width="100%">
          <tr valign="top" style="LINE-HEIGHT: 1.25;">
            <td style="WIDTH: 18pt">
              <div><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: Times New Roman">&#160;
      </font></div>
            </td>
            <td style="WIDTH: 36pt">
              <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">(2)</font></div>
            </td>
            <td>
              <div align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">The
      proposed maximum offering price per share and proposed maximum offering
      price have been calculated (i) as to 120,025 shares under the Director
      Plan, based on a price of $2.63 per share, which was the weighted average
      price used to determine awards made prior to the date of the filing of
      this Registration Statement; and (ii) as to 6,000,000 shares under the
      Equity Plan and 79,975 shares under the Directors Plan, estimated solely
      for the purpose of calculating the registration fee pursuant to Rule
      457(c) and 457(h) under the Securities Act, based upon the average of the
      high and low prices for the Company's Common Stock reported on the New
      York Stock Exchange on July 18,
2008.</font></div>
            </td>
          </tr>
      </table>
    </div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25"><br>
      <div id="PGBRK" style="MARGIN-LEFT: 0pt; WIDTH: 100%; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt">
        <div id="FTR">
          <div id="GLFTR" style="WIDTH: 100%" align="left"><font style="DISPLAY: inline; FONT-SIZE: 8pt; COLOR: #000000; FONT-FAMILY: Times New Roman">&#160;
</font></div>
        </div>
        <div id="PN" style="PAGE-BREAK-AFTER: always">
          <div style="WIDTH: 100%; TEXT-ALIGN: center"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: Times New Roman">&#160;
</font></div>
          <div style="WIDTH: 100%; TEXT-ALIGN: center">
            <hr style="COLOR: black" noshade size="2">
          </div>
        </div>
        <div id="HDR">
          <div id="GLHDR" style="WIDTH: 100%" align="right"><font style="DISPLAY: inline; FONT-SIZE: 8pt; COLOR: #000000; FONT-FAMILY: Times New Roman">&#160;
</font></div>
        </div>
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">STATEMENT
PURSUANT TO GENERAL INSTRUCTION E</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">TO
FORM S-8</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="justify">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 72pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">The
contents of the Registration Statement on Form S-8 (File No. 333-52449) that
Ambac Financial Group, Inc. (the &#8220;<font style="DISPLAY: inline; TEXT-DECORATION: underline">Company</font>&#8221;) filed with
the Securities and Exchange Commission on May 12, 1998, and of the Registration
Statement on Form S-8 (File No. 333-110145) that the Company filed with the
Securities and Exchange Commission on October 31, 2003, are hereby incorporated
by reference.</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; 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="justify">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><font style="DISPLAY: inline; TEXT-DECORATION: underline">Explanatory
Statement</font></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: 72pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">The
shares covered by this Registration Statement may be offered and sold to
employees and non-employee directors of the Company and its subsidiaries under
the following plans:</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div>
      <table align="center" border="0" cellpadding="0" cellspacing="0" id="hangingindent" width="100%">
          <tr valign="top" style="LINE-HEIGHT: 1.25;">
            <td style="WIDTH: 93pt">
              <div><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: Times New Roman">&#160;
      </font></div>
            </td>
            <td style="WIDTH: 18pt">
              <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><font style="DISPLAY: inline;" face="Symbol, serif">&#183;</font></font></div>
            </td>
            <td>
              <div align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">6,000,000
      shares under the Company's 1997 Equity Plan (the &#8220;<font style="DISPLAY: inline; TEXT-DECORATION: underline">Equity</font> <font style="DISPLAY: inline; TEXT-DECORATION: underline">Plan</font>&#8221;);
      and</font></div>
            </td>
          </tr>
      </table>
    </div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div>
      <table align="center" border="0" cellpadding="0" cellspacing="0" id="hangingindent" width="100%">
          <tr valign="top" style="LINE-HEIGHT: 1.25;">
            <td style="WIDTH: 93pt">
              <div><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: Times New Roman">&#160;
      </font></div>
            </td>
            <td style="WIDTH: 18pt">
              <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><font style="DISPLAY: inline;" face="Symbol, serif">&#183;</font></font></div>
            </td>
            <td>
              <div align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">200,000
      shares under the Company's 1997 Non-Employee Directors Equity Plan (the
      &#8220;<font style="DISPLAY: inline; TEXT-DECORATION: underline">Directors
      Plan</font>&#8221;).</font></div>
            </td>
          </tr>
      </table>
    </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: 72pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">On June
3, 2008, the Company's stockholders approved amendments to the Equity Plan and
the Directors Plan that, among other things, increased by 6,000,000 the number
of shares over which the Company may make awards under the Equity Plan and
increased by 200,000 the number of shares over which the Company may make awards
under the Directors Plan.</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; 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="justify">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><font style="DISPLAY: inline; TEXT-DECORATION: underline">Information not in earlier
registration statement</font></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: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">
    </div>
    <div>&#160;</div>
    <div align="left">
      <table bgcolor="white" cellpadding="0" cellspacing="0" width="100%">
          <tr>
            <td width="13%"><font style="FONT-SIZE: 10pt; FONT-FAMILY: times new roman"><font style="DISPLAY: inline; FONT-WEIGHT: bold">Item: 5</font></font></td>
            <td width="87%"><font style="FONT-SIZE: 10pt; FONT-FAMILY: times new roman"><font style="DISPLAY: inline; FONT-WEIGHT: bold">Interests of Named Experts and
      Counsel</font></font></td>
          </tr>
      </table>
    </div>
    <div>&#160;</div>
    <div style="TEXT-INDENT: 72pt"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Anne Gill
Kelly, Esq., Managing Director, Corporate Secretary and Assistant General
Counsel of the Company, has given an opinion on the validity of the securities
being registered.&#160;&#160;Ms. Kelly beneficially owns, or has the right to
acquire under Ambac's employee benefit plans, an aggregate of less than 1%<font style="DISPLAY: inline; FONT-WEIGHT: bold">&#160;</font>of Ambac's common
stock.</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: 72pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">
      <div id="PGBRK" style="MARGIN-LEFT: 0pt; WIDTH: 100%; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt">
        <div id="FTR">
          <div id="GLFTR" style="WIDTH: 100%" align="left"><font style="DISPLAY: inline; FONT-SIZE: 8pt; COLOR: #000000; FONT-FAMILY: Times New Roman">&#160;
</font></div>
        </div>
        <div id="PN" style="PAGE-BREAK-AFTER: always">
          <div style="WIDTH: 100%; TEXT-ALIGN: center"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: Times New Roman">&#160;
</font></div>
          <div style="WIDTH: 100%; TEXT-ALIGN: center">
            <hr style="COLOR: black" noshade size="2">
          </div>
        </div>
        <div id="HDR">
          <div id="GLHDR" style="WIDTH: 100%" align="right"><font style="DISPLAY: inline; FONT-SIZE: 8pt; COLOR: #000000; FONT-FAMILY: Times New Roman">&#160;
</font></div>
        </div>
      </div>
    </div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 72pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">SIGNATURES</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: 72pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Pursuant
to the requirements of the Securities Act, Ambac Financial Group, Inc. certifies
that it has reasonable grounds to believe that it meets all of the requirements
for filing on Form S-8 and has duly caused this Registration Statement to be
signed on its behalf by the undersigned, thereunto duly authorized, in New York,
New York on July 23, 2008.</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: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">
      <div>
        <table cellpadding="0" cellspacing="0" width="100%">
            <tr>
              <td valign="top" width="39%"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: times new roman">&#160;
      </font></td>
              <td align="left" colspan="3" valign="top" width="31%">
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">
                  <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">AMBAC
      FINANCIAL GROUP, INC.</font></div>
                </div>
              </td>
              <td valign="top" width="8%"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: times new roman">&#160;
      </font></td>
            </tr>
            <tr>
              <td valign="top" width="39%"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: times new roman">&#160;
      </font></td>
              <td valign="top" width="3%"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: times new roman">&#160;
      </font></td>
              <td valign="top" width="5%"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: times new roman">&#160;
      </font></td>
              <td valign="top" width="23%"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: times new roman">&#160;
      </font></td>
              <td valign="top" width="8%"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: times new roman">&#160;
      </font></td>
            </tr>
            <tr>
              <td valign="top" width="39%"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: times new roman">&#160;
      </font></td>
              <td valign="top" width="3%"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: times new roman">&#160;
      </font></td>
              <td valign="top" width="5%"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: times new roman">&#160;
      </font></td>
              <td valign="top" width="23%"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: times new roman">&#160;
      </font></td>
              <td valign="top" width="8%"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: times new roman">&#160;
      </font></td>
            </tr>
            <tr>
              <td align="left" valign="top" width="39%" style="PADDING-BOTTOM: 2px">
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
              </td>
              <td align="left" valign="top" width="3%" style="PADDING-BOTTOM: 2px">
                <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">By<font size="+0">:</font></font></div>
              </td>
              <td align="left" colspan="2" valign="top" width="28%" style="BORDER-BOTTOM: black 2px solid">
                <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">/s/
      Anne Gill Kelly</font></div>
              </td>
              <td valign="top" width="8%" style="PADDING-BOTTOM: 2px"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: times new roman">&#160;
      </font></td>
            </tr>
            <tr>
              <td valign="top" width="39%"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: times new roman">&#160;
      </font></td>
              <td valign="top" width="3%"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: times new roman">&#160;
      </font></td>
              <td align="left" valign="top" width="5%">
                <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">Name:</font></div>
              </td>
              <td valign="bottom" width="23%"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: times new roman"><font size="2" style="FONT-SIZE: 10pt; FONT-FAMILY: times new roman">Anne Gill
      Kelly</font></font></td>
              <td valign="top" width="8%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;
      </font></td>
            </tr>
            <tr>
              <td valign="top" width="39%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;
      </font></td>
              <td valign="top" width="3%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;
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              <td align="left" valign="top" width="5%">
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OF ATTORNEY</font></div>
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that each person whose signature to this Registration Statement appears below
hereby constitutes and appoints each of Gregg L. Bienstock, Kevin J. Doyle and
Anne Gill Kelly as such person's true and lawful attorney-in-fact and agent,
with full power of substitution and resubstitution, for such person and in such
person's name, place and stead, in any and all capacities, to sign any and all
amendments to the Registration Statement, including post-effective amendments,
and registration statements filed pursuant to Rule 462 under the Securities Act
of 1933, and to file the same, with all exhibits thereto, and other documents in
connection therewith, with the Securities and Exchange Commission, and does
hereby grant unto each said attorney-in-fact and agent full power and authority
to do and perform each and every act and thing requisite and necessary to be
done in and about the premises, as fully to all intents and purposes as such
person might or could do in person, hereby ratifying and confirming all that
each said attorney-in-fact and agent, or any substitute therefore, may lawfully
do or cause to be done by virtue hereof.</font></div>
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to the requirements of the Securities Act of 1933, the following persons have
signed this Registration Statement in the indicated capacities on July 22,
2008.</font></div>
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          <tr>
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            <td align="left" valign="top" width="50%" style="PADDING-BOTTOM: 2px"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
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          <tr>
            <td align="left" valign="top" width="32%" style="PADDING-BOTTOM: 2px"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
            <td align="left" valign="top" width="18%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
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            <td align="left" valign="top" width="32%" style="PADDING-BOTTOM: 2px"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
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            <td align="left" valign="top" width="32%" style="PADDING-BOTTOM: 2px"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
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          <tr>
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          </tr>
          <tr>
            <td align="left" valign="top" width="32%" style="PADDING-BOTTOM: 2px"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
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</font></div>
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        <div style="WIDTH: 100%; TEXT-ALIGN: center"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: Times New Roman">&#160;
</font></div>
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</font></div>
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Index</font></div>
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following exhibits are filed as part of this Registration
Statement:</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div align="left">
      <table cellpadding="0" cellspacing="0" width="100%">
          <tr>
            <td align="left" nowrap valign="top" width="20%">
              <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"><font style="DISPLAY: inline; TEXT-DECORATION: underline">Exhibit
      No.</font></font></div>
            </td>
            <td align="left" valign="top" width="80%">
              <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"><font style="DISPLAY: inline; TEXT-DECORATION: underline">Description of
      Document</font></font></div>
            </td>
          </tr>
          <tr>
            <td align="left" valign="top" width="20%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
            <td align="left" valign="top" width="80%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
          </tr>
          <tr>
            <td align="left" valign="top" width="20%">
              <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">4.01</font></div>
            </td>
            <td align="left" valign="top" width="80%">
              <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">Conformed
      Copy of the Amended and Restated Certificate of Incorporation of the
      Company filed with the Secretary of State of the State of Delaware on July
      11, 1997. (Filed as Exhibit 4.05 to the Company's Quarterly Report for the
      quarter ended September 30, 1997 and incorporated herein by
      reference.)</font></div>
            </td>
          </tr>
          <tr>
            <td align="left" valign="top" width="20%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
            <td align="left" valign="top" width="80%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
          </tr>
          <tr>
            <td align="left" valign="top" width="20%">
              <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">4.02</font></div>
            </td>
            <td align="left" valign="top" width="80%">
              <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">Conformed
      Copy of the Certificate of Amendment to the Amended and Restated
      Certificate of Incorporation of Ambac Financial Group, Inc. filed with the
      Secretary of State of the State of Delaware on May 13, 1998. (Filed as
      Exhibit 4.04 to the Ambac Financial Group Inc.'s Quarterly Report for the
      quarter ended June 30, 1998 and incorporated herein by
      reference.)</font></div>
            </td>
          </tr>
          <tr>
            <td align="left" valign="top" width="20%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
            <td align="left" valign="top" width="80%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
          </tr>
          <tr>
            <td align="left" valign="top" width="20%">
              <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">4.03</font></div>
            </td>
            <td align="left" valign="top" width="80%">
              <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">Conformed
      Copy of the Certificate of Amendment to the Amended and Restated
      Certificate of Incorporation of Ambac Financial Group, Inc. filed with the
      Secretary of State of the State of Delaware on May 28, 2004. (Filed as
      Exhibit 3.03 to Ambac Financial Group, Inc.'s Annual Report on Form 10-K
      for the year ended December 31, 2004 and incorporated herein by
      reference.)</font></div>
            </td>
          </tr>
          <tr>
            <td align="left" valign="top" width="20%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
            <td align="left" valign="top" width="80%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
          </tr>
          <tr>
            <td align="left" valign="top" width="20%">
              <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">4.04*</font></div>
            </td>
            <td align="left" valign="top" width="80%">
              <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">Conformed
      Copy of the Certificate of Amendment to the Amended and Restated
      Certificate of Incorporation of Ambac Financial Group, Inc. filed with the
      Secretary of State of the State of Delaware on June 20,
    2008.</font></div>
            </td>
          </tr>
          <tr>
            <td align="left" valign="top" width="20%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
            <td align="left" valign="top" width="80%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
          </tr>
          <tr>
            <td align="left" valign="top" width="20%">
              <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">4.05</font></div>
            </td>
            <td align="left" valign="top" width="80%">
              <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">By-laws
      of the Company, as amended through May 8, 2007. (Filed as Exhibit 3.05 to
      the Company's Quarterly Report on Form 10-Q for the quarter ended June 30,
      2007 and incorporated herein by reference.)</font></div>
            </td>
          </tr>
          <tr>
            <td align="left" valign="top" width="20%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
            <td align="left" valign="top" width="80%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
          </tr>
          <tr>
            <td align="left" valign="top" width="20%">
              <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">4.06</font></div>
            </td>
            <td align="left" valign="top" width="80%">
              <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">Definitive
      Engraved Stock Certificate representing shares of Common Stock. (Filed as
      Exhibit 4.01 to the Company's Annual Report on Form 10-K for the year
      ended December 31, 1997 and incorporated herein by
    reference.)</font></div>
            </td>
          </tr>
          <tr>
            <td align="left" valign="top" width="20%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
            <td align="left" valign="top" width="80%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
          </tr>
          <tr>
            <td align="left" valign="top" width="20%">
              <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">4.07*</font></div>
            </td>
            <td align="left" valign="top" width="80%">
              <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">Ambac
      1997 Equity Plan, as amended through June 3, 2008.</font></div>
            </td>
          </tr>
          <tr>
            <td align="left" valign="top" width="20%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
            <td align="left" valign="top" width="80%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
          </tr>
          <tr>
            <td align="left" nowrap valign="top" width="20%">
              <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">4.08*&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;
      </font></div>
            </td>
            <td align="left" valign="top" width="80%">
              <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">Ambac
      1997 Non-Employee Directors Equity Plan, as amended through June 3,
      2008.</font></div>
            </td>
          </tr>
      </table>
    </div>
    <div>&#160;</div>
    <div id="PGBRK" style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt">
      <div id="FTR">
        <div id="GLFTR" style="WIDTH: 100%" align="left">
        </div>
      </div>
      <div id="PN" style="PAGE-BREAK-AFTER: always">
        <div style="WIDTH: 100%; TEXT-ALIGN: center">
        </div>
        <div style="WIDTH: 100%; TEXT-ALIGN: center">
          <hr style="COLOR: black" noshade size="2">
        </div>
      </div>
      <div id="HDR">
        <div id="GLHDR" style="WIDTH: 100%" align="right">
        </div>
      </div>
    </div>
    <div>&#160;</div>
    <div align="left">
      <table cellpadding="0" cellspacing="0" width="100%">
          <tr>
            <td align="left" valign="top" width="20%">
              <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">5.01*</font></div>
            </td>
            <td align="left" valign="top" width="80%">
              <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">Opinion
      of Anne Gill Kelly, Managing Director, Corporate Secretary </font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">and
      Assistant General Counsel of Ambac Financial Group,
Inc.</font></div>
            </td>
          </tr>
          <tr>
            <td align="left" valign="top" width="20%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
            <td align="left" valign="top" width="80%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
          </tr>
          <tr>
            <td align="left" valign="top" width="20%">
              <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">23.01*</font></div>
            </td>
            <td align="left" valign="top" width="80%">
              <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">Consent
      of KPMG LLP.</font></div>
            </td>
          </tr>
          <tr>
            <td align="left" valign="top" width="20%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
            <td align="left" valign="top" width="80%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
          </tr>
          <tr>
            <td align="left" valign="top" width="20%">
              <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">23.02*</font></div>
            </td>
            <td align="left" valign="top" width="80%">
              <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">Consent
      of Anne Gill Kelly (included in Exhibit&#160;5).</font></div>
            </td>
          </tr>
          <tr>
            <td align="left" valign="top" width="20%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
            <td align="left" valign="top" width="80%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
          </tr>
          <tr>
            <td align="left" valign="top" width="20%">
              <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">24.01*</font></div>
            </td>
            <td align="left" valign="top" width="80%">
              <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">Power
      of Attorney (included on signature pages).</font></div>
            </td>
          </tr>
          <tr>
            <td align="left" valign="top" width="20%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
            <td align="left" valign="top" width="80%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
          </tr>
          <tr>
            <td align="left" valign="top" width="20%" style="BORDER-BOTTOM: black 2px solid">&#160;</td>
            <td align="left" valign="top" width="80%" style="PADDING-BOTTOM: 2px"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
          </tr>
          <tr>
            <td align="left" nowrap valign="top" width="20%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">*&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;Filed
      herewith&#160; </font></td>
            <td align="left" valign="top" width="80%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
          </tr>
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    <div style="DISPLAY: block; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25">&#160;</div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25">
      <div>
        <hr style="COLOR: black" align="left" noshade size="2" width="100%">
      </div><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="right">&#160;</div><br></body>
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[{"type": "S-8", "sequence": "1", "filename": "ss42638_s8.htm", "secsgml_size_bytes": 83946}]
{"company-data": {"conformed-name": "AMBAC FINANCIAL GROUP INC", "cik": "0000874501", "assigned-sic": "6351", "irs-number": "133621676", "state-of-incorporation": "DE", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "S-8", "act": "33", "file-number": "333-152479", "film-number": "08965920"}, "business-address": {"street1": "ONE STATE ST PLZ", "city": "NEW YORK", "state": "NY", "zip": "10004", "phone": "2126680340"}, "mail-address": {"street1": "ONE STATE ST PLZ", "city": "NEW YORK", "state": "NY", "zip": "10004"}, "former-company": {"former-conformed-name": "AMBAC INC /DE/", "date-changed": "19930328"}}
As
filed with the Securities and Exchange Commission on July 23, 2008
Registration
No. 333-_______
UNITED
STATES
SECURITIES
AND EXCHANGE COMMISSION
WASHINGTON,
D.C. 20549
FORM
S-8
REGISTRATION
STATEMENT
UNDER
THE SECURITIES ACT OF 1933
________________
AMBAC
FINANCIAL GROUP, INC.
(Exact
name of Registrant as specified in its charter)
Delaware
(State
      or other jurisdiction of
incorporation or
organization)
13-3621676
(I.R.S.
      Employer
Identification
      Number)
One
      State Street Plaza
New
      York, New York  10004
(Address
of Registrant's principal executive offices)
Ambac
1997 Equity Plan
Ambac
1997 Non-Employee Directors Equity Plan
(Full
title of the plan)
_______________
Anne
Gill Kelly, Esq.
Managing
Director, Corporate Secretary
and
Assistant General Counsel
Ambac
Financial Group, Inc.
One
State Street Plaza
New
York, NY 10004
(212)
208-3355
(Name,
address and telephone number of agent for service)
_______________
Copies
to:
George
Spera, Esq.
Shearman
& Sterling
599
Lexington Avenue, New York, NY 10022
(212)
848-4000
CALCULATION
OF REGISTRATION FEE
Title
      of Securities to be
Registered
Amount
      to be
Registered
      (1)
Proposed
      Maximum
Offering Price per
Share(2)
Proposed
      Maximum
Aggregate
      Offering
Price(2)
Amount
      of
Registration
      Fee
Common
      Stock, U.S.$0.01 par value per share:
Ambac
      1997 Equity Plan
6,000,000
$2.14
$12,840,000
$504.61
Ambac
      1997 Non-Employee Directors
Equity
      Plan
79,975
$2.14
$171,146.50
$6.73
120,025
$2.63
$315,665.75
$12.41
TOTAL:
6,200,000
$13,326,812.25
$523.75
(1)
This
      registration statement on Form S-8 (this
"
Registration
      Statement
"
) is being
      filed to register (i) 6,000,000 shares of common stock, U.S.$0.01 par
      value per share ("
Common Stock
"),
      of Ambac Financial Group, Inc. (the "
Company
")
      available for issuance under the Ambac 1997 Equity Plan (the "
Equity Plan
")
      and (ii) 200,000 shares of Common Stock of the Company available for
      issuance under the Ambac 1997 Non-Employee Directors Equity Plan (the
      "
Directors
      Plan
").  Pursuant to Rule 416(c) under the Securities Act
      of 1933 (the "
Securities
      Act
"), this Registration Statement also covers such number of
      additional shares that may become available for purchase pursuant to the
      Equity Plan and the Directors Plan in the event of certain changes in the
      outstanding shares of Common Stock, including reorganizations, mergers,
      recapitalizations, restructurings, stock dividends, stock splits, reverse
      stock splits and reclassifications.
(2)
The
      proposed maximum offering price per share and proposed maximum offering
      price have been calculated (i) as to 120,025 shares under the Director
      Plan, based on a price of $2.63 per share, which was the weighted average
      price used to determine awards made prior to the date of the filing of
      this Registration Statement; and (ii) as to 6,000,000 shares under the
      Equity Plan and 79,975 shares under the Directors Plan, estimated solely
      for the purpose of calculating the registration fee pursuant to Rule
      457(c) and 457(h) under the Securities Act, based upon the average of the
      high and low prices for the Company's Common Stock reported on the New
      York Stock Exchange on July 18,
2008.
STATEMENT
PURSUANT TO GENERAL INSTRUCTION E
TO
FORM S-8
The
contents of the Registration Statement on Form S-8 (File No. 333-52449) that
Ambac Financial Group, Inc. (the "
Company
") filed with
the Securities and Exchange Commission on May 12, 1998, and of the Registration
Statement on Form S-8 (File No. 333-110145) that the Company filed with the
Securities and Exchange Commission on October 31, 2003, are hereby incorporated
by reference.
Explanatory
Statement
The
shares covered by this Registration Statement may be offered and sold to
employees and non-employee directors of the Company and its subsidiaries under
the following plans:
·
6,000,000
      shares under the Company's 1997 Equity Plan (the "
Equity
Plan
");
      and
·
200,000
      shares under the Company's 1997 Non-Employee Directors Equity Plan (the
      "
Directors
      Plan
").
On June
3, 2008, the Company's stockholders approved amendments to the Equity Plan and
the Directors Plan that, among other things, increased by 6,000,000 the number
of shares over which the Company may make awards under the Equity Plan and
increased by 200,000 the number of shares over which the Company may make awards
under the Directors Plan.
Information not in earlier
registration statement
Item: 5
Interests of Named Experts and
      Counsel
Anne Gill
Kelly, Esq., Managing Director, Corporate Secretary and Assistant General
Counsel of the Company, has given an opinion on the validity of the securities
being registered.  Ms. Kelly beneficially owns, or has the right to
acquire under Ambac's employee benefit plans, an aggregate of less than 1%
of Ambac's common
stock.
SIGNATURES
Pursuant
to the requirements of the Securities Act, Ambac Financial Group, Inc. certifies
that it has reasonable grounds to believe that it meets all of the requirements
for filing on Form S-8 and has duly caused this Registration Statement to be
signed on its behalf by the undersigned, thereunto duly authorized, in New York,
New York on July 23, 2008.
AMBAC
      FINANCIAL GROUP, INC.
By
:
/s/
      Anne Gill Kelly
Name:
Anne Gill
      Kelly
Title:
Managing
      Director, Corporate Secretary
and Assistant
      General Counsel
POWER
OF ATTORNEY
KNOW ALL PERSONS BY THESE PRESENTS,
that each person whose signature to this Registration Statement appears below
hereby constitutes and appoints each of Gregg L. Bienstock, Kevin J. Doyle and
Anne Gill Kelly as such person's true and lawful attorney-in-fact and agent,
with full power of substitution and resubstitution, for such person and in such
person's name, place and stead, in any and all capacities, to sign any and all
amendments to the Registration Statement, including post-effective amendments,
and registration statements filed pursuant to Rule 462 under the Securities Act
of 1933, and to file the same, with all exhibits thereto, and other documents in
connection therewith, with the Securities and Exchange Commission, and does
hereby grant unto each said attorney-in-fact and agent full power and authority
to do and perform each and every act and thing requisite and necessary to be
done in and about the premises, as fully to all intents and purposes as such
person might or could do in person, hereby ratifying and confirming all that
each said attorney-in-fact and agent, or any substitute therefore, may lawfully
do or cause to be done by virtue hereof.
Pursuant
to the requirements of the Securities Act of 1933, the following persons have
signed this Registration Statement in the indicated capacities on July 22,
2008.
Signature
Title
/s/
      Michael A. Callen
Chairman
      and Interim President and Chief
Michael
      A. Callen
Executive
      Officer (Principal Executive Officer)
/s/
      Sean T. Leonard
Senior
      Vice President and Chief Financial
Sean
      T. Leonard
Officer
      (Principal Financial and Accounting Officer)
Director
Jill
      M. Considine
/s/
      Paul DeRosa
Director
Paul
      DeRosa
/s/
      Philip N. Duff
Director
Philip
      N. Duff
/s/
      Thomas C. Theobald
Director
Thomas
      C. Theobald
/s/
      Laura S. Unger
Director
Laura
      S. Unger
/s/
      Henry D.G. Wallace
Director
Henry
      D. G. Wallace
Exhibit
Index
The
following exhibits are filed as part of this Registration
Statement:
Exhibit
      No.
Description of
      Document
4.01
Conformed
      Copy of the Amended and Restated Certificate of Incorporation of the
      Company filed with the Secretary of State of the State of Delaware on July
      11, 1997. (Filed as Exhibit 4.05 to the Company's Quarterly Report for the
      quarter ended September 30, 1997 and incorporated herein by
      reference.)
4.02
Conformed
      Copy of the Certificate of Amendment to the Amended and Restated
      Certificate of Incorporation of Ambac Financial Group, Inc. filed with the
      Secretary of State of the State of Delaware on May 13, 1998. (Filed as
      Exhibit 4.04 to the Ambac Financial Group Inc.'s Quarterly Report for the
      quarter ended June 30, 1998 and incorporated herein by
      reference.)
4.03
Conformed
      Copy of the Certificate of Amendment to the Amended and Restated
      Certificate of Incorporation of Ambac Financial Group, Inc. filed with the
      Secretary of State of the State of Delaware on May 28, 2004. (Filed as
      Exhibit 3.03 to Ambac Financial Group, Inc.'s Annual Report on Form 10-K
      for the year ended December 31, 2004 and incorporated herein by
      reference.)
4.04*
Conformed
      Copy of the Certificate of Amendment to the Amended and Restated
      Certificate of Incorporation of Ambac Financial Group, Inc. filed with the
      Secretary of State of the State of Delaware on June 20,
    2008.
4.05
By-laws
      of the Company, as amended through May 8, 2007. (Filed as Exhibit 3.05 to
      the Company's Quarterly Report on Form 10-Q for the quarter ended June 30,
      2007 and incorporated herein by reference.)
4.06
Definitive
      Engraved Stock Certificate representing shares of Common Stock. (Filed as
      Exhibit 4.01 to the Company's Annual Report on Form 10-K for the year
      ended December 31, 1997 and incorporated herein by
    reference.)
4.07*
Ambac
      1997 Equity Plan, as amended through June 3, 2008.
4.08*
Ambac
      1997 Non-Employee Directors Equity Plan, as amended through June 3,
      2008.
5.01*
Opinion
      of Anne Gill Kelly, Managing Director, Corporate Secretary
and
      Assistant General Counsel of Ambac Financial Group,
Inc.
23.01*
Consent
      of KPMG LLP.
23.02*
Consent
      of Anne Gill Kelly (included in Exhibit 5).
24.01*
Power
      of Attorney (included on signature pages).
*           Filed
      herewith