<SUBMISSION>
<ACCESSION-NUMBER>0001181431-02-001966
<TYPE>3
<PUBLIC-DOCUMENT-COUNT>1
<PERIOD>20021026
<FILING-DATE>20021115
<REPORTING-OWNER>
<COMPANY-DATA>
<CONFORMED-NAME>GUEST ROBERT E JR
<CIK>0001203646
<RELATIONSHIP>DIRECTOR
</COMPANY-DATA>
<FILING-VALUES>
<FORM-TYPE>3
</FILING-VALUES>
<MAIL-ADDRESS>
<STREET1>150 N MERAMEC
<CITY>CLAYTON
<STATE>MO
<ZIP>63105
</MAIL-ADDRESS>
</REPORTING-OWNER>
<SUBJECT-COMPANY>
<COMPANY-DATA>
<CONFORMED-NAME>ENTERPRISE FINANCIAL SERVICES CORP
<CIK>0001025835
<ASSIGNED-SIC>6022
<IRS-NUMBER>431706259
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>1231
</COMPANY-DATA>
<FILING-VALUES>
<FORM-TYPE>3
<ACT>34
<FILE-NUMBER>001-15373
<FILM-NUMBER>02829111
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>150 NORTH MERAMEC
<STREET2>150 NORTH MERAMEC
<CITY>CLAYTON
<STATE>MO
<ZIP>63105
<PHONE>3147255500
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>150 NORTH MERAMEC
<STREET2>150 NORTH MERAMEC
<CITY>CLAYTON
<STATE>MO
<ZIP>63105
</MAIL-ADDRESS>
<FORMER-COMPANY>
<FORMER-CONFORMED-NAME>ENTERBANK HOLDINGS INC
<DATE-CHANGED>19961024
</FORMER-COMPANY>
</SUBJECT-COMPANY>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>rrd1969.htm
<DESCRIPTION>FORM 3 - ROBERT E. GUEST, JR.
<TEXT>

<TABLE width=100% border=1>
<TR>
<TD width=254 valign=middle align=center>
<div><font size = +2>FORM 3</font></div>
</TD>
<TD width=764 valign=middle align=center>
    <font face=arial,helvetica><b>UNITED STATES SECURITIES AND EXCHANGE COMMISSION</b></font><br>
    <font size=1 face=arial,helvetica><b>Washington, D.C.&nbsp;&nbsp;20549</b></font><br><br>
    <font size=2 face=arial,helvetica><b>INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES</b></font><br><br>
    <font size=1 face=arial,helvetica>Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility</font><br>
    <font size=1 face=arial,helvetica>Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940</font><br>
</TD>
<TD width=254 valign=top>
    <div align=center><font size=1 face=arial,helvetica>OMB APPROVAL</font></div>
    <br><div align=center><hr width=98%></div><br>
    <div><font size=1 face=arial,helvetica>OMB Number: 3235-0104</font></div>
    <div><font size=1 face=arial,helvetica>Expires: January 31, 2005<br>Estimated average burden<br>hours per response. . . . . 0.5</font></div>
</TD>
</TR>
</TABLE>




<TABLE width=100% border=1>

<TR>
<TD width=446 valign=top>
    <div><font size=1 face=arial,helvetica>1. Name and Address of Reporting Person<sup>*</sup></font></div><BR>
    <div><font size=1 face=arial,helvetica><b>Guest, Robert E. Jr</b></font></div>
    <div align=center><hr width=98%></div>
    <div align=center><font size=1 face=arial,helvetica>(Last) &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;(First) &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;(Middle)</font></div><BR>
    <div><font size=1 face=arial,helvetica><b>150 North Meramec</b></font></div>
    <div><font size=1 face=arial,helvetica><b></b></font></div>
    <div align=center><hr width=98%></div>
    <div align=center><font size=1 face=arial,helvetica>(Street)</font></div>
    <div><font size=1 face=arial,helvetica><b>St. Louis,&nbsp; &nbsp; MO&nbsp; &nbsp;63105</b></font></div>
    <div align=center><hr width=98%></div>
    <div align=center><font size=1 face=arial,helvetica>(City) &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;(State) &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;(Zip)</font></div>
    <br>
</TD>
<TD width=190 valign=top>
    <div><font size=1 face=arial,helvetica>2. Date of Event<br>Requiring Statement<BR>&nbsp;&nbsp;&nbsp;&nbsp;Month/Day/Year</font></div><br>
    <div><font size=1 face=arial,helvetica><b>10/26/2002</b></font></div>
    <br><div align=center><hr width=98%></div>
    <div><font size=1 face=arial,helvetica>3. I.R.S. Identification<br>&nbsp;&nbsp;&nbsp;&nbsp;Number of Reporting<br>&nbsp;&nbsp;&nbsp;&nbsp;Person, if an entity<br>&nbsp;&nbsp;&nbsp;&nbsp;(voluntary)</font></div>
    <div><font size=1 face=arial,helvetica><b>43-1706259</b></font></div>


</TD>

<TD width=526 valign=top>
    <div><font size=1 face=arial,helvetica>4. Issuer Name <b>and</B>Ticker or Trading Symbol</font></div><br>
    <div><font size=1 face=arial,helvetica><b>Enterprise Financial Services Corp<BR>EFSC</b></font></div>
    <br><div align=center><hr width=98%></div>
    	<div><font size=1 face=arial,helvetica>	5. Relationship of Reporting Person(s) to Issuer</font></div>
<div><font size=1 face=arial,helvetica>(Check all applicable)</font></div><br>
    <div><font size=1 face=arial,helvetica><u>X</u> Director &nbsp;
    <u>&nbsp;&nbsp;</u> 10% Owner</font></div>
    <div><font size=1 face=arial,helvetica><u>&nbsp;&nbsp;</u> Officer (give title below) &nbsp; &nbsp;<BR>
    <u>&nbsp;&nbsp;</u> Other (specify below)</font></div>
    <br>
    <div><font size=1 face=arial,helvetica>Description &nbsp; &nbsp;
    <b><u></u></b></font></div>
    <div align=center><hr width=98%></div>

    </TD>
<TD width=110 valign=top>
<div><font size=1 face=arial,helvetica>6. If Amendment,<BR>&nbsp;&nbsp;&nbsp;&nbsp;Date of Original<br>&nbsp;&nbsp;&nbsp;&nbsp;(Month/Day/Year)</font></div><br>
    <div><font size=1 face=arial,helvetica><b></b></font></div>
<br><div align=center><hr width=98%></div>
    <div><font size=1 face=arial,helvetica>    <div><font size=1 face=arial,helvetica>7. Individual or Joint/Group<br> &nbsp; &nbsp; Filing (Check Applicable Line)</font></div>
    <br><div><font size=1 face=arial,helvetica><u>X</u> &nbsp; Form filed by One Reporting Person</font></div>
    <div><font size=1 face=arial,helvetica><u>&nbsp;&nbsp;</u> &nbsp; Form filed by More than One Reporting Person</font></div>
</TD>
</TR>
</TABLE>

<TABLE width=100% border=1>
<TR>
<TD width=100% valign=top>
    <div align=center><font size=1 face=arial,helvetica><b>Table I - Non-Derivative Securities Beneficially Owned</b></font></div>
</TD>
</TR>
</TABLE>
<TABLE width=100% border=1>
<TR>
<TD width=280 valign=top>
    <div><font size=1 face=arial,helvetica>1. Title of Security<br>&nbsp;&nbsp;&nbsp;&nbsp;(Instr. 4)</font></div><br>
</TD>
<TD width=140 valign=top>
    <div><font size=1 face=arial,helvetica>2. Amount of Securities Beneficially Owned<br><br>&nbsp;&nbsp;&nbsp;&nbsp;(Instr.4)</font></div>
</TD>
<TD width=100 valign=top>
    <div><font size=1 face=arial,helvetica>3. Ownership Form:<br>&nbsp;&nbsp;&nbsp;&nbsp;Direct (D)<br>&nbsp;&nbsp;&nbsp;&nbsp;or<br>&nbsp;&nbsp;&nbsp;&nbsp;Indirect (I)<br><br>&nbsp;&nbsp;&nbsp;&nbsp;(Instr. 5)</font></div>
</TD>

<TD width=304 valign=top>
    <div><font size=1 face=arial,helvetica>4. Nature of Indirect Beneficial Ownership<br><br>&nbsp;&nbsp;&nbsp;&nbsp;(Instr. 5)</font></div>
</TD>


</TR>


	<TR>
<TD width=280 align=left>
    <div><font size=1 face=arial,helvetica><b>Common Stock</b></font></div>
</TD>

<TD width=140 align=center>
<div align=center><font size=1 face=arial,helvetica><b>3,020</b></font></div>
</TD>

<TD width=100 align=center
<div align=center><font size=1 face=arial,helvetica><b>
D
</font>
</div>
</TD>

<TD width=204 align=left>
<div><font size=1 face=arial,helvetica><b></b></font></div>
</TD>

</TR>



	<TR>
<TD width=280 align=left>
    <div><font size=1 face=arial,helvetica><b>Common Stock </b></font></div>
</TD>

<TD width=140 align=center>
<div align=center><font size=1 face=arial,helvetica><b>24,120</b></font></div>
</TD>

<TD width=100 align=center
<div align=center><font size=1 face=arial,helvetica><b>
I
</font>
</div>
</TD>

<TD width=204 align=left>
<div><font size=1 face=arial,helvetica><b>by Spouse (1)</b></font></div>
</TD>

</TR>



	<TR>
<TD width=280 align=left>
    <div><font size=1 face=arial,helvetica><b>Common Stock</b></font></div>
</TD>

<TD width=140 align=center>
<div align=center><font size=1 face=arial,helvetica><b>11,691</b></font></div>
</TD>

<TD width=100 align=center
<div align=center><font size=1 face=arial,helvetica><b>
I
</font>
</div>
</TD>

<TD width=204 align=left>
<div><font size=1 face=arial,helvetica><b>by Trust (2)</b></font></div>
</TD>

</TR>



	<TR>
<TD width=280 align=left>
    <div><font size=1 face=arial,helvetica><b>Common Stock</b></font></div>
</TD>

<TD width=140 align=center>
<div align=center><font size=1 face=arial,helvetica><b>231,285</b></font></div>
</TD>

<TD width=100 align=center
<div align=center><font size=1 face=arial,helvetica><b>
I
</font>
</div>
</TD>

<TD width=204 align=left>
<div><font size=1 face=arial,helvetica><b>Henges Equity LP (3)</b></font></div>
</TD>

</TR>



	<TR>
<TD width=280 align=left>
    <div><font size=1 face=arial,helvetica><b>Common Stock</b></font></div>
</TD>

<TD width=140 align=center>
<div align=center><font size=1 face=arial,helvetica><b>36,000</b></font></div>
</TD>

<TD width=100 align=center
<div align=center><font size=1 face=arial,helvetica><b>
I
</font>
</div>
</TD>

<TD width=204 align=left>
<div><font size=1 face=arial,helvetica><b>Jt/ with Spouse</b></font></div>
</TD>

</TR>



	<TR>
<TD width=280 align=left>
    <div><font size=1 face=arial,helvetica><b>Commont Stock</b></font></div>
</TD>

<TD width=140 align=center>
<div align=center><font size=1 face=arial,helvetica><b>8,220</b></font></div>
</TD>

<TD width=100 align=center
<div align=center><font size=1 face=arial,helvetica><b>
I
</font>
</div>
</TD>

<TD width=204 align=left>
<div><font size=1 face=arial,helvetica><b>Spouse IRA</b></font></div>
</TD>

</TR>



</TABLE>
<TABLE width=100% border=0>
<TR>
<TD width=100%><hr width=98%>
</TD>
</TR>
</TABLE>
<TABLE width=100% border=0>
<TR>
    <TD width=100% align=right><font face=arial,helvetica><b>&nbsp;</b></font><br>
</TD>
</TR>
</TABLE>

<TABLE width=100% border=1>
<TR>
<TD width=100% valign=top>
    <div align=center><font size=1 face=arial,helvetica><b>Table II - Derivative Securities Beneficially Owned</b></font></div>
    <div align=center><font size=1 face=arial,helvetica><b>(e.g., puts, calls, warrants, options, convertible securities)</b></font></div>
</TD>
</TR>
</TABLE>
<TABLE width=100% border=1>
<TR>
<TD width=152 valign=top>
    <div><font size=1 face=arial,helvetica>1. Title of Derivative Security<br>&nbsp;&nbsp;&nbsp;&nbsp;(Instr. 4)</font></div>
</TD>

<TD width=112 valign=top>
    <div><font size=1 face=arial,helvetica>2. Date Exercisable(DE) and<br>&nbsp;&nbsp;&nbsp;&nbsp;Expiration Date(ED)<br>&nbsp;&nbsp;&nbsp;&nbsp;(Month/Day/Year)</font></div>
    <br><br><br><br><br><div align=center><hr width=98%></div>
    <div align=center><font size=1 face=arial,helvetica>&nbsp; DE &nbsp; &nbsp; / &nbsp; &nbsp; ED &nbsp;</font></div>
</TD>

<TD width=186 valign=top>
    <div><font size=1 face=arial,helvetica>3. Title and Amount of<br>&nbsp;&nbsp;&nbsp;&nbsp;Underlying Securities<br>&nbsp;&nbsp;&nbsp;&nbsp;(Instr. 4)</font></div>
<br><br><br><br><br><div align=center><hr width=98%></div>
<div align=center><font size=1 face=arial,helvetica>Title&nbsp;&nbsp;&nbsp;&nbsp; / &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Amount or Number of Shares</font></div>
</TD>

<TD width=76 valign=top>
    <div><font size=1 face=arial,helvetica>4. Conver-<br>&nbsp;&nbsp;&nbsp;&nbsp;sion or<br>&nbsp;&nbsp;&nbsp;&nbsp;Exercise<br>&nbsp;&nbsp;&nbsp;&nbsp;Price of<br>&nbsp;&nbsp;&nbsp;&nbsp;Deri-<br>&nbsp;&nbsp;&nbsp;&nbsp;vative<br>&nbsp;&nbsp;&nbsp;&nbsp;Security</font></div>
</TD>

<TD width=50 valign=top>
    <font size=1 face=arial,helvetica>5. Owner-<br>ship<br>Form of<br>Deriv-<br>ative<br>Security:<BR>Direct (D)<br>or<BR>Indirect (I)<br><BR>(Instr.5)</font>
</TD>
<TD width=128 valign=top>
    <font size=1 face=arial,helvetica>6. Nature of<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Indirect<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Beneficial<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Ownership<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(Instr.5)</font>
</TD>


</TR>




   <BR>

</TABLE>
<font size=1 face=arial,helvetica><B>Explanation of Responses:</B> </font><br>

<TABLE width=100% border=0>
<TR>
    <TD width=100% align=right><font face=arial,helvetica><b>&nbsp;</b></font><br>
</TD>
</TR>
</TABLE>

<TABLE width=100% border=1>
<TR>
<TD width=1272>
    <div>(1)The reporting person disclaims beneficial ownership of these shares held by spouse as Trustee for daughter,12,060 shares and as Trustee for son, 12,060 shares.<br>(2) The reporting person disclaims beneficial ownership of 11,691 shares held in Trust by the following: 5,100 shares held in trust by father and mother in law for benefit of son; 5,241 shares held in trust by father and mother in law for benefit of daughter; and 1,350 held in parent's names in the Guest Family Trust.<br>(3) The reporting person disclaims beneficial ownership of these shares held by Spouse in the Henges Equity, LP.  Spouse owns 1/3 interest in the Henges Equity LP.</div>
</TD>
</TR>
</TABLE>
<TABLE width=100% border=0>
<TR>
<TD width=40% valign=top>
    <font size=1 face=arial,helvetica><b>By: </b><br><U>/s/ Robert E. Guest, Jr. by Power of Attorney</U>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<u>11/15/02</U>
<br>** Signature of Reporting Person &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Date &nbsp; &nbsp; &nbsp;</font><br><br><font size=1 face=arial,helvetica><b></b></font><br><br>
    <div align=right><font size=1 face=arial,helvetica><br>SEC 2270 (07/02)</font></div>
</TD>
</TR>
<TR>
<TD width=60% valign=top>
    <font size=1 face=arial,helvetica>Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.<BR><BR>
* If the form is filed by more than one reporting person, see Instruction 4(b)(v).<BR>
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations
See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).<BR>
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
<BR>
Potential persons who are to respond to the collection of information contained in this form are not<BR>
required to respond unless the form displays a currently valid OMB Number.
</font>
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