<SUBMISSION>
<ACCESSION-NUMBER>0001104659-06-042191
<TYPE>8-K
<PUBLIC-DOCUMENT-COUNT>1
<PERIOD>20060613
<ITEMS>2.01
<ITEMS>8.01
<FILING-DATE>20060616
<DATE-OF-FILING-DATE-CHANGE>20060616
<FILER>
<COMPANY-DATA>
<CONFORMED-NAME>SIMPSON MANUFACTURING CO INC /CA/
<CIK>0000920371
<ASSIGNED-SIC>3420
<IRS-NUMBER>943196943
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>1231
</COMPANY-DATA>
<FILING-VALUES>
<FORM-TYPE>8-K
<ACT>34
<FILE-NUMBER>001-13429
<FILM-NUMBER>06910389
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<BUSINESS-ADDRESS>
<STREET1>4120 DUBLILN BLVD STE 400
<CITY>DUBLIN
<STATE>CA
<ZIP>94568
<PHONE>9255609000
</BUSINESS-ADDRESS>
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<STREET1>4120 DUBLIN BLVD STE 400
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<STATE>CA
<ZIP>94568
</MAIL-ADDRESS>
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<DOCUMENT>
<TYPE>8-K
<SEQUENCE>1
<FILENAME>a06-13936_18k.htm
<DESCRIPTION>CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES
<TEXT>
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 <div style="border:none;border-top:double windowtext 6.0pt;padding:0pt 0pt 0pt 0pt;"> <p style="border:none;margin:0pt 0pt .0001pt;padding:0pt;"></p> </div>

<p align="center" style="margin:6.0pt 0pt 12.0pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">UNITED STATES</font></p>

<p align="center" style="margin:6.0pt 0pt 12.0pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">SECURITIES AND
EXCHANGE COMMISSION</font></p>

<p align="center" style="margin:6.0pt 0pt 12.0pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Washington, D.C.
20549</font></p>

<p align="center" style="margin:6.0pt 0pt 12.0pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">FORM&nbsp;8-K</font></p>

<p align="center" style="margin:6.0pt 0pt 12.0pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">CURRENT REPORT</font></p>

<p align="center" style="margin:6.0pt 0pt 12.0pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Pursuant
to Section&nbsp;13 or 15(d)&nbsp;of the Securities Exchange Act of 1934</font></b></p>

<p align="center" style="margin:0pt 0pt 12.0pt;text-align:center;text-indent:20.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Date of Report (Date of earliest event reported):&#160; <b><u><font style="font-weight:bold;">June&nbsp;13, 2006</font></u></b></font></p>

<p align="center" style="margin:0pt 0pt 12.0pt;text-align:center;text-indent:40.0pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Simpson
Manufacturing Co.,&nbsp;Inc.</font></b></p>

<p align="center" style="margin:0pt 0pt 12.0pt;text-align:center;text-indent:40.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Exact name of registrant
as specified in its charter)</font></p>

<div align="center">

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
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  <td width="31%" valign="top" style="padding:0pt .7pt 0pt .7pt;width:31.1%;">
  <p align="center" style="font-size:10.0pt;margin:0pt 0pt .0001pt;text-align:center;"><b><font style="font-weight:bold;">Delaware</font></b></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0pt .7pt 0pt .7pt;width:3.34%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="31%" valign="top" style="padding:0pt .7pt 0pt .7pt;width:31.1%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">0-23804</font></b></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0pt .7pt 0pt .7pt;width:3.34%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="31%" valign="top" style="padding:0pt .7pt 0pt .7pt;width:31.1%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">94-3196943</font></b></p>
  </td>
 </tr>
 <tr>
  <td width="31%" valign="top" style="padding:0pt .7pt 0pt .7pt;width:31.1%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(State or other
  jurisdiction</font></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0pt .7pt 0pt .7pt;width:3.34%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="31%" valign="top" style="padding:0pt .7pt 0pt .7pt;width:31.1%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Commission</font></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0pt .7pt 0pt .7pt;width:3.34%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="31%" valign="top" style="padding:0pt .7pt 0pt .7pt;width:31.1%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(I.R.S. Employer</font></p>
  </td>
 </tr>
 <tr>
  <td width="31%" valign="top" style="padding:0pt .7pt 0pt .7pt;width:31.1%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">of
  incorporation)</font></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0pt .7pt 0pt .7pt;width:3.34%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="31%" valign="top" style="padding:0pt .7pt 0pt .7pt;width:31.1%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">file number)</font></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0pt .7pt 0pt .7pt;width:3.34%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="31%" valign="top" style="padding:0pt .7pt 0pt .7pt;width:31.1%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Identification
  No.)</font></p>
  </td>
 </tr>
</table>

</div>

<p style="line-height:1.0pt;margin:0pt 0pt 12.0pt;"><font size="1" face="Times New Roman">&nbsp;</font></p>

<p align="center" style="margin:0pt 0pt 12.0pt;text-align:center;text-indent:40.0pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">5956 W.
Las Positas Blvd., Pleasanton, CA 94588 </font></b></p>

<p align="center" style="margin:0pt 0pt 12.0pt;text-align:center;text-indent:40.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Address of principal
executive offices)</font></p>

<p align="center" style="margin:0pt 0pt 12.0pt;text-align:center;text-indent:20.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Registrant&#146;s telephone number, including area
code):&#160; <b><font style="font-weight:bold;">(925) 560-9000</font></b></font></p>

<p style="margin:0pt 0pt 12.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Check the
appropriate box below if the Form&nbsp;8-K filing is intended to
simultaneously satisfy the filing obligation of the registrant under any of the
following provisions:</font></p>

<p style="font-size:10.0pt;margin:0pt 0pt 12.0pt 18.0pt;text-indent:-18.0pt;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>Written
communications pursuant to Rule&nbsp;425 under the Securities Act (17 CFR
230.425)</p>

<p style="font-size:10.0pt;margin:0pt 0pt 12.0pt 18.0pt;text-indent:-18.0pt;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>Soliciting
material pursuant to Rule&nbsp;14a-12 under the Exchange Act (17 CFR
240.14a-2)</p>

<p style="font-size:10.0pt;margin:0pt 0pt 12.0pt 18.0pt;text-indent:-18.0pt;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>Pre-commencement
communications pursuant to Rule&nbsp;14d-2(b)&nbsp;under the Exchange Act
(17 CFR 240.14d-2(b))</p>

<p style="font-size:10.0pt;margin:0pt 0pt 12.0pt 18.0pt;text-indent:-18.0pt;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>Pre-commencement
communications pursuant to Rule&nbsp;13e-4(c)&nbsp;under the Exchange Act
(17 CFR 240. 13e-4(c))</p>


 <div style="border:none;border-bottom:double windowtext 6.0pt;padding:0pt 0pt 0pt 0pt;"> <p style="border:none;margin:0pt 0pt .0001pt;padding:0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p> </div>
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<p style="margin:0pt 0pt 12.0pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item 2.01&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; Completion of Acquisition or Disposition of Assets</font></b></p>

<p style="margin:0pt 0pt 12.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">On June&nbsp;15, 2006,
Simpson Manufacturing Co.,&nbsp;Inc. (the &#147;Company&#148;) completed the purchase of
a building from Vacaville Investors, a related party (See Item 2, Item 8 (Note
9) and Item 13 of the Company&#146;s Annual Report on Form&nbsp;10-K for the
year ended December&nbsp;31, 2005, which are incorporated herein by reference),
for approximately $6.5 million in cash. The purchase price was based on the
appraised value, the remaining rent that would have accrued under the lease and
the estimated cost that the Company would have incurred for relocation. The
building is approximately 125,000 square feet and is occupied by the Company&#146;s
subsidiary, Simpson Dura-Vent Company,&nbsp;Inc. The transaction was
unanimously approved by the independent members of the Company&#146;s Board of
Directors.</font></p>

<p style="font-size:12.0pt;margin-left:0pt;margin-right:0pt;"><b><font size="2" color="black" face="Times New Roman" style="color:black;font-size:10.0pt;font-weight:bold;">Item 8.01&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; Other
Events</font></b> </p>

<p style="margin-left:0pt;margin-right:0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">The
Company has completed the purchase of 500,000 shares of its Common Stock for
and average price of $34.33 per share. The total cost of the transaction was
approximately $17.2 million and was part of the $50 million that the Company&#146;s
Board of Directors authorized in November 2005 for repurchases of Common Stock.
The number of shares is approximately the same as the number of shares that
were subject to stock options granted in 2006.</font></p>


 <p style="font-size:10.0pt;margin:24.0pt 0pt .0001pt;text-align:center;"><font face="Times New Roman">2</font></p> <br><hr size="3" width="100%" noshade color="#010101" align="center">

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<p align="center" style="margin:0pt 0pt 12.0pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">SIGNATURES</font></b></p>

<p style="margin:0pt 0pt 12.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Pursuant to the
requirements of the Securities Exchange Act of 1934, the registrant has duly
caused this report to be signed on its behalf by the undersigned hereunto duly
authorized.</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;font-family:Times New Roman;width:100.0%;">
 <tr>
  <td width="48%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:48.92%;">
  <p style="font-size:10.0pt;margin:0pt 0pt .0001pt;"></p>
  </td>
  <td width="2%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:2.96%;">
  <p style="margin:0pt 0pt .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="48%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0pt .7pt 0pt 0pt;width:48.12%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Simpson
  Manufacturing Co.,&nbsp;Inc.</font></b></p>
  </td>
 </tr>
 <tr>
  <td width="48%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:48.92%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:2.96%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="48%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:48.12%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Registrant)</font></p>
  </td>
 </tr>
 <tr>
  <td width="48%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:48.92%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:2.96%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="48%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:48.12%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="48%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:48.92%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:2.96%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="48%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:48.12%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="48%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:48.92%;">
  <p style="font-size:10.0pt;margin:0pt 0pt .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">DATE:&nbsp;&nbsp;</font></b>June&nbsp;16,
  2006</p>
  </td>
  <td width="2%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:2.96%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By</font></p>
  </td>
  <td width="48%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0pt .7pt 0pt 0pt;width:48.12%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/Michael J.
  Herbert</font></p>
  </td>
 </tr>
 <tr>
  <td width="48%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:48.92%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:2.96%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="48%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:48.12%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Michael J.
  Herbert</font></p>
  </td>
 </tr>
 <tr>
  <td width="48%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:48.92%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:2.96%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="48%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:48.12%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Chief Financial
  Officer</font></p>
  </td>
 </tr>
</table>

<p style="line-height:1.0pt;margin:0pt 0pt 12.0pt;"><font size="1" face="Times New Roman">&nbsp;</font></p>


 <p style="font-size:10.0pt;margin:24.0pt 0pt .0001pt;text-align:center;"><font face="Times New Roman">3</font></p>
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