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    <div style="DISPLAY: block; TEXT-INDENT: 0pt; TEXT-ALIGN: center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; FONT-VARIANT: small-caps">UNITED
STATES</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; FONT-VARIANT: small-caps">SECURITIES
AND EXCHANGE COMMISSION</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Washington,
D.C.&#160;&#160;20549</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; FONT-VARIANT: small-caps">FORM
8-K</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center">&#160;</div>
    <div>
      <hr style="COLOR: black" align="center" noshade size="2" width="20%">
    </div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; FONT-VARIANT: small-caps">CURRENT
REPORT</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Pursuant
to Section 13 or 15(d) of the</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Securities
Exchange Act of 1934</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Date of
report (Date of earliest event reported):</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">February&#160;12,
2009</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div>
      <table cellpadding="0" cellspacing="0" width="100%">
          <tr>
            <td colspan="3" valign="top" width="79%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">Ameren
      Corporation</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">(Exact
      name of registrant as specified in its charter)</font></div>
            </td>
          </tr>
          <tr>
            <td align="left" valign="top" width="26%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;
      </font></td>
            <td align="left" valign="top" width="26%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;
      </font></td>
            <td align="left" valign="top" width="26%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;
      </font></td>
          </tr>
          <tr>
            <td valign="top" width="26%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">Missouri</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">(State
      or other</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">jurisdiction
      of</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">incorporation)</font></div>
            </td>
            <td valign="top" width="26%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">1-14756</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">(Commission</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">File
      Number)</font></div>
            </td>
            <td valign="top" width="26%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">43-1723446</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">(IRS
      Employer</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">Identification
      No.)</font></div>
            </td>
          </tr>
          <tr>
            <td valign="top" width="26%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;
      </font></td>
            <td valign="top" width="26%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;
      </font></td>
            <td valign="top" width="26%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;
      </font></td>
          </tr>
          <tr>
            <td colspan="3" valign="top" width="79%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">1901
      Chouteau Avenue, St. Louis, Missouri 63103</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">(Address
      of principal executive offices and Zip Code)</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center">&#160;</div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center">&#160;</div>
            </td>
          </tr>
          <tr>
            <td colspan="3" valign="top" width="79%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">Registrant&#8217;s
      telephone number, including area code:&#160;&#160;(314)
      621-3222</font></div>
            </td>
          </tr>
      </table>
    </div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Check the
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:</font></div>
    <div>
      <table cellpadding="0" cellspacing="0" width="100%">
          <tr>
            <td align="left" valign="top" width="4%">
              <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">[&#160;&#160;]&#160;</font></div>
            </td>
            <td align="left" valign="top" width="74%">
              <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">Written
      communications pursuant to Rule 425 under the Securities Act (17 CFR
      230.425)</font></div>
            </td>
          </tr>
          <tr>
            <td align="left" valign="top" width="4%">
              <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">[&#160;&#160;]</font></div>
            </td>
            <td align="left" valign="top" width="74%">
              <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">Soliciting
      material pursuant to Rule 14a-12 under the Exchange Act (17 CFR
      240.14a-12)</font></div>
            </td>
          </tr>
          <tr>
            <td align="left" valign="top" width="4%">
              <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">[&#160;&#160;]</font></div>
            </td>
            <td align="left" valign="top" width="74%">
              <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">Pre-commencement
      communications pursuant to Rule 14d-2(b) under the Exchange Act
      (17&#160;CFR 240.14d-2(b))</font></div>
            </td>
          </tr>
          <tr>
            <td align="left" valign="top" width="4%">
              <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">[&#160;&#160;]</font></div>
            </td>
            <td align="left" valign="top" width="74%">
              <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">Pre-commencement
      communications pursuant to Rule 13e-4(c) under the Exchange Act
      (17&#160;CFR 240.13e-4(c))</font></div>
            </td>
          </tr>
      </table>
    </div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt">&#160;</div>
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        </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 style="DISPLAY: block; TEXT-INDENT: 0pt">&#160;</div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt">&#160;</div>
    <div>
      <table align="center" border="0" cellpadding="0" cellspacing="0" id="hangingindent" width="100%">
          <tr valign="top">
            <td style="WIDTH: 72pt">
              <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 12pt; FONT-FAMILY: Times New Roman"><font style="DISPLAY: inline; FONT-SIZE: 10pt">Item 5.02</font></font></div>
            </td>
            <td>
              <div align="justify"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 12pt; FONT-FAMILY: Times New Roman"><font style="DISPLAY: inline; FONT-SIZE: 10pt">Departure of Directors or Certain
      Officers; Election of Directors;</font> <font style="DISPLAY: inline; FONT-SIZE: 10pt">Appointment of Certain Officers;
      Compensatory Arrangements of Certain</font> <font style="DISPLAY: inline; FONT-SIZE: 10pt">Officers.</font></font></div>
            </td>
          </tr>
      </table>
    </div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div>
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          <tr valign="top">
            <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">(e)</font></div>
            </td>
            <td>
              <div align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">On
      February&#160;12, 2009, the Human Resources Committee of the Board of
      Directors (the &#8220;Committee&#8221;) of Ameren Corporation (&#8220;Ameren&#8221;) approved and
      on February&#160;13, 2009 the full Board of Directors of Ameren ratified
      the establishment of the 2009 Ameren Executive Incentive Plan (the &#8220;2009
      EIP&#8221;) to provide for the payment of cash awards to the Named Executive
      Officers identified below based on earnings per share (&#8220;EPS&#8221;) of Ameren
      and/or business segment contribution to Ameren EPS and individual
      performance in 2009.&#160;&#160;The 2009 EIP is attached as Exhibit 10.1
      and is incorporated herein by
reference.</font></div>
            </td>
          </tr>
      </table>
    </div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 36pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">For 2009,
a target award under the 2009 EIP was established for each Named Executive
Officer as a percent of 2009 base salary as shown below.</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
    <div>
      <table cellpadding="0" cellspacing="0" width="100%">
          <tr>
            <td valign="bottom" width="29%">
              <div style="DISPLAY: block; TEXT-INDENT: 0pt">&#160;</div>
              <div style="DISPLAY: block; TEXT-INDENT: 0pt">&#160;</div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 99pt; MARGIN-RIGHT: 0pt; TEXT-ALIGN: left" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman; FONT-VARIANT: small-caps">Named
      Executive Officer</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 99pt; MARGIN-RIGHT: 0pt; TEXT-ALIGN: left" align="center">&#160;</div>
            </td>
            <td valign="bottom" width="37%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman; FONT-VARIANT: small-caps">Target
      Short-Term</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman; FONT-VARIANT: small-caps">Incentive
      Compensation as</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman; FONT-VARIANT: small-caps">&#160;Percent
      of Base Salary</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center">&#160;</div>
            </td>
          </tr>
          <tr>
            <td align="left" valign="top" width="29%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 135pt; MARGIN-RIGHT: 0pt; TEXT-ALIGN: left" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">Rainwater</font></div>
            </td>
            <td valign="top" width="37%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">90%</font></div>
            </td>
          </tr>
          <tr>
            <td align="left" valign="top" width="29%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 135pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">Baxter</font></div>
            </td>
            <td valign="top" width="37%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">60%</font></div>
            </td>
          </tr>
          <tr>
            <td align="left" valign="top" width="29%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 135pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">Voss</font></div>
            </td>
            <td valign="top" width="37%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">60%</font></div>
            </td>
          </tr>
          <tr>
            <td align="left" valign="top" width="29%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 135pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">Sullivan</font></div>
            </td>
            <td valign="top" width="37%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">60%</font></div>
            </td>
          </tr>
          <tr>
            <td align="left" valign="top" width="29%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 135pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">Cisel</font></div>
            </td>
            <td valign="top" width="37%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">60%</font></div>
            </td>
          </tr>
      </table>
    </div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 36pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Under the
2009 EIP, EPS determined in accordance with generally accepted accounting
principles is the primary metric used to establish award
opportunities.&#160;&#160;Named Executive Officers with corporate responsibility
(Messrs. Rainwater, Baxter and Sullivan) will have their incentive compensation
opportunity based 100% on Ameren EPS, while Named Executive Officers with
business segment responsibility (Messrs. Voss and Cisel) will have their
incentive compensation opportunity based 50% on Ameren EPS and 50% on their
respective business segment contribution to Ameren EPS.&#160;&#160;The range of
EPS achievement levels for the 2009 EIP (threshold, target and maximum) were
also established by the Committee and ratified by the Board in February
2009.&#160;&#160;EPS achievement levels may be adjusted to include or exclude
specified items of an unusual or non-recurring nature as determined by the
Committee at its sole discretion and as permitted by the Ameren Corporation 2006
Omnibus Incentive Compensation Plan.&#160;&#160;In the event Ameren EPS or
business segment contribution to Ameren EPS is below the threshold achievement
level, as determined by the Committee, no award will be paid that is based on
achieving the related EPS threshold achievement level.</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <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">
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        <div style="WIDTH: 100%; TEXT-ALIGN: center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">-2-</font></div>
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    <div style="DISPLAY: block; MARGIN-LEFT: 36pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 36pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt; TEXT-ALIGN: left" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">The
2009&#160;EIP award based on achievement of 2009 Ameren EPS and/or business
segment contribution to Ameren EPS (the &#8220;core award&#8221;) for Named Executive
Officers </font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">may be
adjusted downwards by up to 50% in the Committee&#8217;s discretion.&#160;&#160;While
the 2009 EIP provides that the core award may also be adjusted upwards by up to
50%, the Committee decided to reduce executive incentive compensation
opportunities for 2009 due to the current business environment and, accordingly,
the core award of certain officers, including the Named Executive Officers, may
not be adjusted upward.</font></div>
    </div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 36pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">In order
to ensure that awards under the 2009 EIP are fully deductible for tax purposes,
the Committee set a limitation on the 2009 short-term incentive award for each
Named Executive Officer of 0.5 percent of Ameren&#8217;s 2009 net income, so as to
help qualify any such payouts as performance-based pay and be fully deductible
to Ameren for tax purposes.</font></div>
    <div>&#160;</div>
    <div>&#160;</div>
    <div>
      <table align="center" border="0" cellpadding="0" cellspacing="0" id="hangingindent" width="100%">
          <tr valign="top">
            <td style="WIDTH: 72pt">
              <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 12pt; FONT-FAMILY: Times New Roman"><font style="DISPLAY: inline; FONT-SIZE: 10pt">Item 9.01</font></font></div>
            </td>
            <td>
              <div align="justify"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 12pt; FONT-FAMILY: Times New Roman"><font style="DISPLAY: inline; FONT-SIZE: 10pt">Financial Statements and
      Exhibits.</font></font></div>
            </td>
          </tr>
      </table>
    </div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;(d)<font id="TAB1" style="MARGIN-LEFT: 15.1pt"></font>Exhibits</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div>
      <table cellpadding="0" cellspacing="0" width="100%">
          <tr>
            <td align="left" valign="top" width="18%">
              <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">Exhibit
      Number:</font></div>
            </td>
            <td align="left" valign="top" width="61%">
              <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">Title:</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
            </td>
          </tr>
          <tr>
            <td valign="top" width="18%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; MARGIN-RIGHT: 0pt; TEXT-ALIGN: left" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">10.1</font></div>
            </td>
            <td align="left" valign="top" width="61%">
              <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">2009
      Ameren Executive Incentive Plan.</font></div>
            </td>
          </tr>
      </table>
    </div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt">&#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"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">-3-</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">
        </div>
      </div>
    </div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt">&#160;</div>
    <div>
      <table align="center" border="0" cellpadding="0" cellspacing="0" id="hangingindent" width="100%">
          <tr valign="top">
            <td style="WIDTH: 248.4pt">
              <div><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&#160;
      </font></div>
            </td>
            <td>
              <div align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; FONT-VARIANT: small-caps">Signatures</font></div>
            </td>
          </tr>
      </table>
    </div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Pursuant
to the requirements of the Securities Exchange Act of 1934, Ameren has duly
caused this report to be signed on its behalf by the undersigned thereunto duly
authorized.</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div>
      <table align="center" border="0" cellpadding="0" cellspacing="0" id="hangingindent" width="100%">
          <tr valign="top">
            <td style="WIDTH: 248.4pt">
              <div><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&#160;
      </font></div>
            </td>
            <td>
              <div align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; FONT-VARIANT: small-caps">Ameren&#160;Corporation</font></div>
            </td>
          </tr>
      </table>
    </div>
    <div>
      <table align="center" border="0" cellpadding="0" cellspacing="0" id="hangingindent" width="100%">
          <tr valign="top">
            <td style="WIDTH: 248.4pt">
              <div><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&#160;
      </font></div>
            </td>
            <td>
              <div align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">(Registrant)</font></div>
            </td>
          </tr>
      </table>
    </div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div>
      <table align="center" border="0" cellpadding="0" cellspacing="0" id="hangingindent" width="100%">
          <tr valign="top">
            <td style="WIDTH: 248.4pt">
              <div><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&#160;
      </font></div>
            </td>
            <td>
              <div align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman; TEXT-DECORATION: underline">/s/
      Martin J.
      Lyons&#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;&#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;&#160; </font></div>
            </td>
          </tr>
      </table>
    </div>
    <div align="center">
      <table border="0" cellpadding="0" cellspacing="0" id="hangingindent" width="100%">
          <tr valign="top">
            <td style="WIDTH: 248.4pt"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;</font></td>
            <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">Martin
      J. Lyons&#160;</font></td>
          </tr>
          <tr valign="top">
            <td style="WIDTH: 248.4pt">
              <div><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">&#160;
      </font></div>
            </td>
            <td>
              <div align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">Senior
      Vice President and Chief Accounting
Officer</font></div>
            </td>
          </tr>
      </table>
    </div>
    <div>
      <table align="center" border="0" cellpadding="0" cellspacing="0" id="hangingindent" width="100%">
          <tr valign="top">
            <td style="WIDTH: 248.4pt">
              <div><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&#160;
      </font></div>
            </td>
            <td>
              <div align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">(Principal
      Accounting Officer)</font></div>
            </td>
          </tr>
      </table>
    </div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Date:&#160;&#160;February
19, 2009</font></div><br>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt">&#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"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">-4-</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">
        </div>
      </div>
    </div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt">&#160;</div>
    <div style="DISPLAY: block; TEXT-INDENT: 270pt"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; FONT-VARIANT: small-caps">Exhibit
Index</font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 270pt">&#160;</div>
    <div>
      <table cellpadding="0" cellspacing="0" width="100%">
          <tr>
            <td valign="top" width="22%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">Exhibit
      Number:</font></div>
            </td>
            <td align="left" valign="top" width="56%">
              <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">Title:</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
            </td>
          </tr>
          <tr>
            <td valign="top" width="22%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">10.1</font></div>
            </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">2009
      Ameren Executive Incentive Plan.</font></div>
            </td>
          </tr>
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    </div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br>&#160;</div>
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ameren8k02192009.htm
UNITED
STATES
SECURITIES
AND EXCHANGE COMMISSION
Washington,
D.C.  20549
FORM
8-K
CURRENT
REPORT
Pursuant
to Section 13 or 15(d) of the
Securities
Exchange Act of 1934
Date of
report (Date of earliest event reported):
February 12,
2009
Ameren
      Corporation
(Exact
      name of registrant as specified in its charter)
Missouri
(State
      or other
jurisdiction
      of
incorporation)
1-14756
(Commission
File
      Number)
43-1723446
(IRS
      Employer
Identification
      No.)
1901
      Chouteau Avenue, St. Louis, Missouri 63103
(Address
      of principal executive offices and Zip Code)
Registrant's
      telephone number, including area code:  (314)
      621-3222
Check the
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:
[  ]
Written
      communications pursuant to Rule 425 under the Securities Act (17 CFR
      230.425)
[  ]
Soliciting
      material pursuant to Rule 14a-12 under the Exchange Act (17 CFR
      240.14a-12)
[  ]
Pre-commencement
      communications pursuant to Rule 14d-2(b) under the Exchange Act
      (17 CFR 240.14d-2(b))
[  ]
Pre-commencement
      communications pursuant to Rule 13e-4(c) under the Exchange Act
      (17 CFR 240.13e-4(c))
Item 5.02
Departure of Directors or Certain
      Officers; Election of Directors;
Appointment of Certain Officers;
      Compensatory Arrangements of Certain
Officers.
(e)
On
      February 12, 2009, the Human Resources Committee of the Board of
      Directors (the "Committee") of Ameren Corporation ("Ameren") approved and
      on February 13, 2009 the full Board of Directors of Ameren ratified
      the establishment of the 2009 Ameren Executive Incentive Plan (the "2009
      EIP") to provide for the payment of cash awards to the Named Executive
      Officers identified below based on earnings per share ("EPS") of Ameren
      and/or business segment contribution to Ameren EPS and individual
      performance in 2009.  The 2009 EIP is attached as Exhibit 10.1
      and is incorporated herein by
reference.
For 2009,
a target award under the 2009 EIP was established for each Named Executive
Officer as a percent of 2009 base salary as shown below.
Named
      Executive Officer
Target
      Short-Term
Incentive
      Compensation as
Percent
      of Base Salary
Rainwater
90%
Baxter
60%
Voss
60%
Sullivan
60%
Cisel
60%
Under the
2009 EIP, EPS determined in accordance with generally accepted accounting
principles is the primary metric used to establish award
opportunities.  Named Executive Officers with corporate responsibility
(Messrs. Rainwater, Baxter and Sullivan) will have their incentive compensation
opportunity based 100% on Ameren EPS, while Named Executive Officers with
business segment responsibility (Messrs. Voss and Cisel) will have their
incentive compensation opportunity based 50% on Ameren EPS and 50% on their
respective business segment contribution to Ameren EPS.  The range of
EPS achievement levels for the 2009 EIP (threshold, target and maximum) were
also established by the Committee and ratified by the Board in February
2009.  EPS achievement levels may be adjusted to include or exclude
specified items of an unusual or non-recurring nature as determined by the
Committee at its sole discretion and as permitted by the Ameren Corporation 2006
Omnibus Incentive Compensation Plan.  In the event Ameren EPS or
business segment contribution to Ameren EPS is below the threshold achievement
level, as determined by the Committee, no award will be paid that is based on
achieving the related EPS threshold achievement level.
-2-
The
2009 EIP award based on achievement of 2009 Ameren EPS and/or business
segment contribution to Ameren EPS (the "core award") for Named Executive
Officers
may be
adjusted downwards by up to 50% in the Committee's discretion.  While
the 2009 EIP provides that the core award may also be adjusted upwards by up to
50%, the Committee decided to reduce executive incentive compensation
opportunities for 2009 due to the current business environment and, accordingly,
the core award of certain officers, including the Named Executive Officers, may
not be adjusted upward.
In order
to ensure that awards under the 2009 EIP are fully deductible for tax purposes,
the Committee set a limitation on the 2009 short-term incentive award for each
Named Executive Officer of 0.5 percent of Ameren's 2009 net income, so as to
help qualify any such payouts as performance-based pay and be fully deductible
to Ameren for tax purposes.
Item 9.01
Financial Statements and
      Exhibits.
(d)
Exhibits
Exhibit
      Number:
Title:
10.1
2009
      Ameren Executive Incentive Plan.
-3-
Signatures
Pursuant
to the requirements of the Securities Exchange Act of 1934, Ameren has duly
caused this report to be signed on its behalf by the undersigned thereunto duly
authorized.
Ameren Corporation
(Registrant)
/s/
      Martin J.
      Lyons
Martin
      J. Lyons
Senior
      Vice President and Chief Accounting
Officer
(Principal
      Accounting Officer)
Date:  February
19, 2009
-4-
Exhibit
Index
Exhibit
      Number:
Title:
10.1
2009
      Ameren Executive Incentive Plan.