<SUBMISSION>
<ACCESSION-NUMBER>0001047469-03-003568
<TYPE>S-3
<PUBLIC-DOCUMENT-COUNT>4
<FILING-DATE>20030131
<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>S-3
<ACT>33
<FILE-NUMBER>333-102910
<FILM-NUMBER>03535268
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>4120 DUBLILN BLVD STE 400
<CITY>DUBLIN
<STATE>CA
<ZIP>94568
<PHONE>9255609000
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>4120 DUBLIN BLVD STE 400
<CITY>DUBLIN
<STATE>CA
<ZIP>94568
</MAIL-ADDRESS>
</FILER>
<DOCUMENT>
<TYPE>S-3
<SEQUENCE>1
<FILENAME>a2102092zs-3.htm
<DESCRIPTION>S-3
<TEXT>
<HTML>
<HEAD>

</HEAD>
<BODY BGCOLOR="#FFFFFF" LINK=BLUE  VLINK=PURPLE>
<BR>
<FONT SIZE=3 ><A HREF="#03SFO1089_1">QuickLinks</A></FONT>
<font size=3> -- Click here to rapidly navigate through this document</font>
<P ALIGN="CENTER"><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;As filed with the Securities and Exchange Commission on January&nbsp;31, 2003. </FONT></P>

<P ALIGN="RIGHT"><FONT SIZE=2>Registration
No.&nbsp;333-&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT></P>

<HR NOSHADE>
<HR NOSHADE>
<P ALIGN="CENTER"><FONT SIZE=5><B>SECURITIES AND EXCHANGE COMMISSION<BR>  </B></FONT><FONT SIZE=2><B>Washington, D.C. 20549  </B></FONT></P>

<HR NOSHADE ALIGN="CENTER" WIDTH="120">
<P ALIGN="CENTER"><FONT SIZE=5><B>FORM&nbsp;S-3<BR>  </B></FONT><FONT SIZE=2><B>REGISTRATION STATEMENT<BR>
Under<BR>
THE SECURITIES ACT OF 1933  </B></FONT></P>

<HR NOSHADE ALIGN="CENTER" WIDTH="120">
<P ALIGN="CENTER"><FONT SIZE=5><B>SIMPSON MANUFACTURING CO.,&nbsp;INC.<BR>  </B></FONT><FONT SIZE=2>(Exact name of Registrant as specified in its charter) </FONT></P>

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<TD WIDTH="49%" ALIGN="CENTER"><FONT SIZE=2><B>Delaware</B></FONT><FONT SIZE=2><BR>
(State or other jurisdiction of<BR>
Incorporation or organization)</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="49%" ALIGN="CENTER"><FONT SIZE=2><B>94-3196943</B></FONT><FONT SIZE=2><BR>
(I.R.S. Employer<BR>
Identification Number)</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD COLSPAN=3 ALIGN="CENTER" VALIGN="TOP"><BR><FONT SIZE=2><B>4120 Dublin Blvd., Suite 400<BR>
Dublin, CA 94568<BR>
(925)&nbsp;560-9000<BR> </B></FONT><FONT SIZE=2>(Address, including zip code, and telephone number, including area code, of Registrant's principal executive offices)</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD COLSPAN=3 ALIGN="CENTER" VALIGN="TOP"><BR><FONT SIZE=2><B>Michael J. Herbert<BR>
Chief Financial Officer<BR>
Simpson Manufacturing Co.,&nbsp;Inc.<BR>
4120 Dublin Blvd., Suite 400<BR>
Dublin, CA 94568<BR>
(925)&nbsp;560-9000<BR> </B></FONT><FONT SIZE=2>(Name, address, including zip code, and telephone number, including area code, of agent for service)</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD COLSPAN=3 ALIGN="CENTER" VALIGN="TOP"><BR><FONT SIZE=2><B>Copies of all communications to:<BR>
Douglas L. Hammer, Esq.<BR>
Shartsis, Friese&nbsp;&amp; Ginsburg LLP<BR>
One Maritime Plaza, 18th Floor<BR>
San Francisco, California 94111<BR>
(415)&nbsp;421-6500</B></FONT></TD>
</TR>
</TABLE>
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<P ALIGN="CENTER"><FONT SIZE=2><B>Approximate date of commencement of proposed sale to the public:<BR>
As soon as practicable after the effective date of this registration statement.  </B></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If the only securities being registered on this Form are being offered pursuant to dividend or interest reinvestment plans, please check the following
box.&nbsp;&nbsp;&nbsp;&nbsp;<FONT FACE="WINGDINGS">&#111;</FONT> </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If
any of the securities being registered on this Form are to be offered on a delayed or continuous basis pursuant to Rule&nbsp;415 under the Securities Act of 1933, other than
securities offered only in connection with dividend or interest reinvestment plans, check the following box.&nbsp;&nbsp;&nbsp;&nbsp;<FONT FACE="WINGDINGS">&#111;</FONT> </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If
this Form is filed to register additional securities for an offering pursuant to Rule&nbsp;462(b) under the Securities Act, please check the following box and list the Securities
Act registration statement number of the earlier effective registration statement for the same offering.&nbsp;&nbsp;&nbsp;&nbsp;<FONT FACE="WINGDINGS">&#111;</FONT> </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If
this Form is a post-effective amendment filed pursuant to Rule&nbsp;462(c) under the Securities Act, check the following box and list the Securities Act registration
statement number of the earlier effective registration statement for the same offering.&nbsp;&nbsp;&nbsp;&nbsp;<FONT FACE="WINGDINGS">&#111;</FONT> </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If
delivery of the prospectus is expected to be made pursuant to Rule&nbsp;434, please check the following box.&nbsp;&nbsp;&nbsp;&nbsp;<FONT FACE="WINGDINGS">&#111;</FONT> </FONT></P>

<P ALIGN="CENTER"><FONT SIZE=2><B>CALCULATION OF REGISTRATION FEE  </B></FONT></P>

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<TH WIDTH="31%" ALIGN="CENTER"><FONT SIZE=1><B>Title of Each Class of<BR>
Securities to be Registered</B></FONT><BR></TH>
<TH WIDTH="1%"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH WIDTH="15%" ALIGN="CENTER"><FONT SIZE=1><B>Amount to<BR>
be Registered</B></FONT><BR></TH>
<TH WIDTH="1%"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH WIDTH="18%" ALIGN="CENTER"><FONT SIZE=1><B>Proposed Maximum<BR>
Offering Price<BR>
Per Share(1)</B></FONT><BR></TH>
<TH WIDTH="1%"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH WIDTH="18%" ALIGN="CENTER"><FONT SIZE=1><B>Proposed Maximum<BR>
Aggregate<BR>
Offering Price</B></FONT><BR></TH>
<TH WIDTH="1%"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH WIDTH="15%" ALIGN="CENTER"><FONT SIZE=1><B>Amount of<BR>
Registration Fee</B></FONT><BR></TH>
</TR>
<TR VALIGN="TOP">
<TD COLSPAN=9><HR NOSHADE></TD>
</TR>
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<TD WIDTH="31%"><FONT SIZE=2>Common Stock, $0.01 par value</FONT></TD>
<TD WIDTH="1%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="15%" ALIGN="CENTER" VALIGN="BOTTOM"><FONT SIZE=2>2,000,000 shares</FONT></TD>
<TD WIDTH="1%" VALIGN="BOTTOM"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="18%" ALIGN="CENTER" VALIGN="BOTTOM"><FONT SIZE=2>$33.00</FONT></TD>
<TD WIDTH="1%" VALIGN="BOTTOM"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="18%" ALIGN="CENTER" VALIGN="BOTTOM"><FONT SIZE=2>$66,000,000</FONT></TD>
<TD WIDTH="1%" VALIGN="BOTTOM"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="15%" ALIGN="CENTER" VALIGN="BOTTOM"><FONT SIZE=2>$6,072.00</FONT></TD>
</TR>
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<DL compact>
<DT style='margin-bottom:-11pt;'><FONT SIZE=2>(1)</FONT></DT><DD><FONT SIZE=2>Estimated
solely for the purpose of calculating the registration fee pursuant to Rule&nbsp;457(c) under the Securities Act of 1933, based on the average of the high and low prices
of the Common Stock as reported by the New York Stock Exchange on January&nbsp;24, 2003. </FONT></DD></DL>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
Registrant hereby amends this registration statement on such date or dates as may be necessary to delay its effective date until the Registrant shall file&nbsp;a further amendment
which specifically states that this registration statement shall thereafter become effective in accordance with section&nbsp;8(a) of the Securities Act of 1933 or until the registration statement
shall become effective on such date as the Securities and Exchange Commission acting pursuant to said section&nbsp;8(a) may determine. </FONT></P>

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<P ALIGN="CENTER"><FONT SIZE=2>
Subject to Completion<BR>
Dated January&nbsp;31, 2003 </FONT></P>

<P ALIGN="CENTER"><FONT SIZE=2><B>SIMPSON MANUFACTURING CO.,&nbsp;INC.<BR>
4120 Dublin Blvd., Suite 400<BR>
Dublin, CA 94568<BR>
(925)&nbsp;560-9000  </B></FONT></P>

<P ALIGN="CENTER"><FONT SIZE=2><B>2,000,000 SHARES<BR>
COMMON STOCK  </B></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Simpson PSB Fund, a California nonprofit public benefit corporation affiliated with Simpson Manufacturing Co.,&nbsp;Inc., a Delaware corporation, is hereby
offering 2,000,000 shares of common stock of Simpson Manufacturing Co.,&nbsp;Inc. See "Selling Stockholder." Simpson PSB Fund may sell the shares at prices determined by the prevailing market price
for the shares or in negotiated transactions. Simpson Manufacturing Co.,&nbsp;Inc. will not receive any of the proceeds from any sale of shares by Simpson PSB Fund. See "Use of Proceeds." </FONT></P>


<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
Common Stock of Simpson Manufacturing Co.,&nbsp;Inc. is traded on the New York Stock Exchange,&nbsp;Inc. under the symbol "SSD." On January&nbsp;29, 2003, the last reported
sale price of the Common Stock on the New York Stock Exchange was $33.95 per share. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;NEITHER
THE SECURITIES AND EXCHANGE COMMISSION NOR ANY STATE SECURITIES COMMISSION HAS APPROVED OR DISAPPROVED THESE SECURITIES OR DETERMINED WHETHER THIS PROSPECTUS IS TRUTHFUL OR
COMPLETE. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
information in this Prospectus is not complete and may be changed. Simpson PSB Fund may not sell these securities until the Registration Statement filed with the Securities and
Exchange Commissions is effective. This Prospectus is not an offer to sell these securities and it is not soliciting an offer to buy these securities in any state where the offer or sale is not
permitted. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;THE
DATE OF THIS PROSPECTUS IS
<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;</U> </FONT></P>

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<P ALIGN="CENTER"><FONT SIZE=2><A
NAME="page_bk1089_1_2"> </A> </FONT></P>

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<P ALIGN="CENTER"><FONT SIZE=2><A
NAME="bk1089_use_of_proceeds"> </A>
<A NAME="toc_bk1089_1"> </A>
<BR></FONT><FONT SIZE=2><B>USE OF PROCEEDS    <BR>  </B></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Simpson Manufacturing Co.,&nbsp;Inc. will not receive any proceeds from this offering. All proceeds from the sale of the shares offered by this Prospectus will
be for the account of Simpson PSB Fund, the selling stockholder, as described below. Simpson PSB Fund will apply the net proceeds principally to its charitable purposes and administrative and
operating expenses. </FONT></P>

<P ALIGN="CENTER"><FONT SIZE=2><A
NAME="bk1089_selling_stockholder"> </A>
<A NAME="toc_bk1089_2"> </A>
<BR></FONT><FONT SIZE=2><B>SELLING STOCKHOLDER    <BR>  </B></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Simpson PSB Fund is offering all of the shares offered by this Prospectus. The Board of Directors of Simpson PSB Fund comprises Barclay Simpson, Thomas J
Fitzmyers, Charles Lee and Mr.&nbsp;Simpson's wife and 7 adult children. Mr.&nbsp;Simpson and Mr.&nbsp;Fitzmyers also serve on the Board of Directors of Simpson Manufacturing Co.,&nbsp;Inc. As
a result, Simpson PSB Fund is under common control with and thus is an affiliate of Simpson Manufacturing Co.,&nbsp;Inc. Simpson PSB Fund is qualified as an organization exempt from federal and
California income taxation under section&nbsp;501(c)(3) of the Internal Revenue Code of 1986, as amended. In January&nbsp;2003, Mr.&nbsp;Simpson donated to Simpson PSB Fund 2,000,000 shares of
Common Stock of Simpson Manufacturing Co.,&nbsp;Inc. Immediately prior to this offering, Simpson PSB Fund held a total of 2,025,000 shares of Common Stock of Simpson Manufacturing Co.,&nbsp;Inc. </FONT></P>

<P ALIGN="CENTER"><FONT SIZE=2><A
NAME="bk1089_plan_of_distribution"> </A>
<A NAME="toc_bk1089_3"> </A>
<BR></FONT><FONT SIZE=2><B>PLAN OF DISTRIBUTION    <BR>  </B></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Simpson Manufacturing Co.,&nbsp;Inc. has prepared this Prospectus for use by Simpson PSB Fund. Simpson PSB Fund has engaged Barry Vogel&nbsp;&amp; Associates, CJS
Securities and Sidoti&nbsp;&amp; Company to find and introduce potential purchasers of shares. Under Finder's Agreements with those parties, Simpson PSB Fund will pay them up to 1% of the purchase price
for shares that Simpson PSB Fund sells in this offering to persons introduced by them. Simpson Manufacturing Co.,&nbsp;Inc. intends to make a charitable contribution to Simpson PSB Fund, in an
amount up to $15,000, equal to one-half of the expenses of this offering, excluding payments pursuant to the Finder's Agreements. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Simpson
Manufacturing Co.,&nbsp;Inc. will give copies of this Prospectus to Simpson PSB Fund and has informed Simpson PSB Fund of the need for delivery of copies of this Prospectus at
or prior to the time of any sale of the shares offered hereby. </FONT></P>

<P ALIGN="CENTER"><FONT SIZE=2><A
NAME="bk1089_where_you_can_find_more_information"> </A>
<A NAME="toc_bk1089_4"> </A>
<BR></FONT><FONT SIZE=2><B>WHERE YOU CAN FIND MORE INFORMATION    <BR>  </B></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Simpson Manufacturing Co.,&nbsp;Inc. files annual, quarterly and current reports, proxy statements and other information with the Securities and Exchange
Commission. You may read and copy any materials Simpson Manufacturing Co.,&nbsp;Inc. files with the Securities and Exchange Commission at the Securities and Exchange Commission's public reference
room at Room 1024, 450 Fifth Street, N.W., Washington, D.C. 20549, as well as at the Securities and Exchange Commission's regional offices at 175 W. Jackson Boulevard, Suite 900, Chicago, Illinois
60604, and 233 Broadway, New York, New York 10279. You can request copies of these documents by writing to the Securities and Exchange Commission and paying a fee for the copying cost. Please call the
Securities and Exchange Commission at 1-800-SEC-0330 for more information about the operation of the public reference rooms. The Securities and Exchange Commission
filings of Simpson Manufacturing Co.,&nbsp;Inc. are also available at the Securities and Exchange Commission's website at http://www.sec.gov. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This
Prospectus is part of a Registration Statement on Form&nbsp;S-3 that Simpson Manufacturing Co.,&nbsp;Inc. has filed with the Securities and Exchange Commission under
the Securities Act of 1933. This Prospectus omits part of the Registration Statement, as permitted by the rules and regulations of the Securities and Exchange Commission. You may inspect and copy the
Registration Statement, including exhibits, at the Securities and Exchange Commission's public reference rooms or from its web site. Statements in this Prospectus about the contents of any contract or
other document are not necessarily complete. You should refer to the copies of the documents filed as exhibits to the Registration Statement for complete information. </FONT></P>

<P ALIGN="CENTER"><FONT SIZE=2>2</FONT></P>

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<A NAME="page_bk1089_1_3"> </A>
<P ALIGN="CENTER"><FONT SIZE=2><A
NAME="bk1089_incorporation_by_reference"> </A>
<A NAME="toc_bk1089_5"> </A>
<BR></FONT><FONT SIZE=2><B>INCORPORATION BY REFERENCE    <BR>  </B></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The Securities and Exchange Commission allows Simpson Manufacturing Co.,&nbsp;Inc. to incorporate by reference information that Simpson Manufacturing
Co.,&nbsp;Inc. files with the Securities and Exchange Commission, which means that Simpson Manufacturing Co.,&nbsp;Inc. can disclose important information to you by referring you to those
documents. The information incorporated by reference is an important part of this Prospectus, and information that Simpson Manufacturing Co.,&nbsp;Inc. files later with the Securities and Exchange
Commission will automatically update and supersede this information. Simpson Manufacturing Co.,&nbsp;Inc. incorporates by reference the documents listed below and any future filings that Simpson
Manufacturing Co.,&nbsp;Inc. makes with the Securities and Exchange Commission under
section&nbsp;13(a), 13(c), 14 or 15(d) of the Securities Exchange Act of 1934 prior to the termination of this offering: </FONT></P>

<UL>
<DL compact>
<DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>Annual
Report on Form&nbsp;10-K for the year ended December&nbsp;31, 2001;
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>Quarterly
Reports on Form&nbsp;10-Q for the quarters ended March&nbsp;31, June&nbsp;30 and September&nbsp;30, 2002;
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>Report
on Form&nbsp;8-K filed on December&nbsp;4, 2002;
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>Report
on Form&nbsp;8-K filed on January&nbsp;24, 2003; and
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>&#149;</FONT></DT><DD><FONT SIZE=2>The
description of the common stock of Simpson Manufacturing Co.,&nbsp;Inc. in its Registration Statement on Form&nbsp;8-A, including any
amendment or report filed to update that description. </FONT></DD></DL>
</UL>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;You
may request a copy of these filings at no cost, by writing or telephoning Simpson Manufacturing Co.,&nbsp;Inc. at the following address: </FONT></P>

<P ALIGN="CENTER"><FONT SIZE=2>Simpson
Manufacturing Co.,&nbsp;Inc.<BR>
4120 Dublin Blvd., Suite 400<BR>
Dublin, CA 94568<BR>
(925)&nbsp;560-9000 </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This
Prospectus is part of a Registration Statement that Simpson Manufacturing Co.,&nbsp;Inc. filed with the Securities and Exchange Commission. You should rely only on the information
incorporated by reference or provided in this Prospectus, any prospectus supplement and the Registration Statement. Simpson Manufacturing Co.,&nbsp;Inc. has not authorized anyone to provide you with
different information. You should not assume that the information in this Prospectus and any prospectus supplement is accurate as of any date other than the date on the front of the document. </FONT></P>

<P ALIGN="CENTER"><FONT SIZE=2><A
NAME="bk1089_legal_matters"> </A>
<A NAME="toc_bk1089_6"> </A>
<BR></FONT><FONT SIZE=2><B>LEGAL MATTERS    <BR>  </B></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Shartsis, Friese&nbsp;&amp; Ginsburg LLP, San Francisco, California, is passing on certain legal matters for Simpson Manufacturing Co.,&nbsp;Inc. with respect to
the validity of the common stock offered by this
Prospectus. Partners of Shartsis, Friese&nbsp;&amp; Ginsburg LLP own an aggregate of 15,202 shares of the outstanding Common Stock of Simpson Manufacturing Co.,&nbsp;Inc. </FONT></P>

<P ALIGN="CENTER"><FONT SIZE=2><A
NAME="bk1089_experts"> </A>
<A NAME="toc_bk1089_7"> </A>
<BR></FONT><FONT SIZE=2><B>EXPERTS    <BR>  </B></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The financial statements incorporated in this Prospectus by reference to the Annual Report on Form&nbsp;10-K for the year ended December&nbsp;31,
2001 have been so incorporated in reliance on the report of PricewaterhouseCoopers LLP, independent accountants, given on the authority of said firm as experts in auditing and accounting. </FONT></P>

<P ALIGN="CENTER"><FONT SIZE=2>3</FONT></P>

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<P ALIGN="CENTER"><FONT SIZE=2><A
NAME="page_bm1089_1_1"> </A> </FONT></P>

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<P ALIGN="CENTER"><FONT SIZE=2><A
NAME="bm1089_part_ii_information_not_required_in_prospectus"> </A>
<A NAME="toc_bm1089_1"> </A>
<BR></FONT><FONT SIZE=2><B>PART II<BR>  INFORMATION NOT REQUIRED IN PROSPECTUS    <BR>  </B></FONT></P>


<P><FONT SIZE=2><A
NAME="bm1089_item_14._other_expenses_of_issuance_and_distribution."> </A>
<A NAME="toc_bm1089_2"> </A></FONT> <FONT SIZE=2><B>Item 14.&nbsp;&nbsp;&nbsp;&nbsp;</B></FONT><FONT SIZE=2><B><I>Other Expenses of Issuance and Distribution.    <BR>  </I></B></FONT></P>

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<TABLE WIDTH="100%" BORDER=0 CELLSPACING=0 CELLPADDING=0>
<TR BGCOLOR="#CCEEFF" VALIGN="TOP">
<TD WIDTH="86%"><FONT SIZE=2>SEC Registration Fee</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2>$</FONT></TD>
<TD WIDTH="9%" ALIGN="RIGHT"><FONT SIZE=2>6,072</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="TOP">
<TD WIDTH="86%"><FONT SIZE=2>Accounting Fees and Expenses*</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2>$</FONT></TD>
<TD WIDTH="9%" ALIGN="RIGHT"><FONT SIZE=2>5,000</FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="TOP">
<TD WIDTH="86%"><FONT SIZE=2>Legal Fees and Expenses*</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2>$</FONT></TD>
<TD WIDTH="9%" ALIGN="RIGHT"><FONT SIZE=2>10,000</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="TOP">
<TD WIDTH="86%"><FONT SIZE=2>Miscellaneous Expenses*</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2>$</FONT></TD>
<TD WIDTH="9%" ALIGN="RIGHT"><FONT SIZE=2>5,000</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="86%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD COLSPAN=2 ALIGN="RIGHT"><HR NOSHADE></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="TOP">
<TD WIDTH="86%"><FONT SIZE=2>Total*</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2>$</FONT></TD>
<TD WIDTH="9%" ALIGN="RIGHT"><FONT SIZE=2>26,072</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="86%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD COLSPAN=2 ALIGN="RIGHT"><HR NOSHADE SIZE=4></TD>
</TR>
</TABLE>
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<HR NOSHADE ALIGN="LEFT" WIDTH="120">
<DL compact>
<DT style='margin-bottom:-11pt;'><FONT SIZE=2>*</FONT></DT><DD><FONT SIZE=2>Estimated.
</FONT></DD></DL>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;One-half
of such expenses, up to $15,000, will be borne by the Registrant, and the balance will be borne by Simpson PSB Fund. </FONT></P>

<P><FONT SIZE=2><A
NAME="bm1089_item_15._indemnification_of_directors_and_officers"> </A>
<A NAME="toc_bm1089_3"> </A>
<BR></FONT><FONT SIZE=2><B>Item 15.&nbsp;&nbsp;&nbsp;&nbsp;</B></FONT><FONT SIZE=2><B><I>Indemnification of Directors and Officers    <BR>  </I></B></FONT></P>


<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The Certificate of Incorporation of the Registrant provides that a director will not be liable to the Registrant or its stockholders for monetary damages for
breach of fiduciary duty as a director, except to the extent such exemption from liability or limitation thereof is not permitted under the Delaware General Corporation Law (the "GCL")
as the same exists or may hereafter be amended. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;GCL
section&nbsp;145(a) provides that a corporation may indemnify any person who was or is a party or is threatened to be made a party to any threatened, pending or completed action,
suit or proceeding, whether civil, criminal, administrative or investigative (other than an action by or in the right of the corporation) by reason of the fact that the person is or was a director,
officer, employee or agent of the corporation, or is or was serving at the request of the corporation as a director, officer, employee or agent of another corporation, partnership, joint venture,
trust or other enterprise, against expenses (including attorneys' fees), judgments, fines and amounts paid in settlement actually and reasonably incurred by the person in connection with such action,
suit or proceeding if the person acted in good faith and in a manner the person reasonably believed to be in or not opposed to the best interests of the corporation, and, with respect to any criminal
action or proceeding, had no reasonable cause to believe the person's conduct was unlawful. The termination of any action, suit or proceeding by judgment, order, settlement, conviction, or upon a plea
of </FONT><FONT SIZE=2><I>nolo contendere</I></FONT><FONT SIZE=2> or its equivalent, shall not, of itself, create a presumption that the person did not act in good faith and in a manner which the
person reasonably believed to be in or not opposed to the best interest of the corporation, and, with respect to any criminal action or proceeding, had reasonable cause to believe that the person's
conduct was unlawful. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;GCL
section&nbsp;145(b) states that a corporation may indemnify any person who was or is a party or is threatened to be made a party to any threatened, pending or completed action or
suit by or in the right of the corporation to procure a judgment in its favor by reason of the fact that the person is or was a director, officer, employee or agent of the corporation, or is or was
serving at the request of the corporation as a director, officer, employee or agent of another corporation, partnership, joint venture, trust or other enterprise against expenses (including attorneys'
fees) actually and reasonably incurred by the person in connection with the defense or settlement of such action or suit if the person acted in good faith and in a manner the person reasonably
believed to be in or not opposed to the best interests of the corporation and except that no indemnification shall be made in respect of any claim, issue or matter as to which such person shall have
been adjudged to be liable to the corporation unless and only to the extent that the Court of Chancery or the court in which such action or suit was brought shall determine upon application that,
despite the adjudication of liability but in view of all the </FONT></P>

<P ALIGN="CENTER"><FONT SIZE=2>II-1</FONT></P>

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<BR>

<P><FONT SIZE=2>
circumstances of the case, such person is fairly and reasonably entitled to indemnity for such expenses which the Court of Chancery or such other court shall deem proper. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;GCL
section&nbsp;145(c) provides that to the extent that a present or former director or officer of a corporation has been successful on the merits or otherwise in defense of any
action, suit or proceeding
referred to in GCL sections 145 (a)&nbsp;and (b), or in defense of any claim, issue or matter therein, such person shall be indemnified against expenses (including attorneys' fees) actually and
reasonably incurred by such person in connection therewith. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;GCL
section&nbsp;145(d) states that any indemnification under GCL sections 145(a) and (b)&nbsp;(unless ordered by a court) shall be made by the corporation only as authorized in the
specific case upon a determination that indemnification of the present or former director, officer, employee or agent is proper in the circumstances because the person has met the applicable standard
of conduct set forth in GCL sections 145 (a)&nbsp;and (b). Such determination shall be made, with respect to a person who is a director or officer at the time of such determination, (a)&nbsp;by a
majority of the directors who were not parties to such action, suit or proceeding, even though less than a quorum, or (b)&nbsp;by a committee of such directors designated by majority vote of such
directors, even though less than a quorum, or (c)&nbsp;if there are no such directors, or if such directors so direct, by independent legal counsel in a written opinion, or (d)&nbsp;by the
stockholders. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;GCL
section&nbsp;145(e) provides that expenses (including attorneys' fees) incurred by an officer or director in defending any civil, criminal, administrative or investigative action,
suit or proceeding may be paid by the corporation in advance of the final disposition of such action, suit or proceeding upon receipt of an undertaking by or on behalf of such director or officer to
repay such amount if it shall ultimately be determined that such person is not entitled to be indemnified by the corporation as authorized in GCL section&nbsp;145. Such expenses (including
attorneys' fees) incurred by former officers and directors or other employees and agents may be so paid upon such terms and conditions, if any, as the corporation deems appropriate. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;GCL
section&nbsp;145(f) states that the indemnification and advancement of expenses provided by, or granted pursuant to, the other subsections of GCL section&nbsp;145 shall not be
deemed exclusive of any other rights to which those seeking indemnification or advancement of expenses may be entitled under any bylaw, agreement, vote of stockholders or disinterested directors or
otherwise, both as to action in such person's official capacity and as to action in another capacity while holding such office. </FONT></P>


<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;GCL
section&nbsp;145(g) provides that a corporation shall have the power to purchase and maintain insurance on behalf of any person who is or was a director, officer, employee or agent
of the corporation, or is or was serving at the request of the corporation as a director, officer, employee or agent of another corporation, partnership, joint venture, trust or other enterprise,
against any liability asserted against him and incurred by such person in any such capacity, or arising out of such person's status as such, whether or not the corporation would have the power to
indemnify such person against such liability under the provisions of GCL section&nbsp;145. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;GCL
section&nbsp;145(j) states that the indemnification and advancement of expenses provided by, or granted pursuant to, GCL section&nbsp;145 shall, unless otherwise provided when
authorized or ratified, continue as to a person who has ceased to be a director, officer, employee or agent and shall inure to the benefit of the heirs, executors and administrators of such a person. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;In
addition, the Bylaws of the Registrant require that the Registrant indemnify its officers and directors to the maximum extent permissible under the GCL, including indemnification
against any claims, damages or liabilities in connection with any acts or omissions other than those for which a director may not be relieved of liability as described in the preceding paragraph and
other than in circumstances in which indemnity is expressly prohibited by GCL section&nbsp;145. </FONT></P>

<P ALIGN="CENTER"><FONT SIZE=2>II-2</FONT></P>

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<A NAME="page_bm1089_1_3"> </A>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
Registrant has entered into agreements to indemnify the directors and officers of the Registrant and its subsidiaries, in addition to indemnification provided in the Registrant's
Bylaws. These agreements, among other things, require that the Registrant indemnify; the directors and officers for certain expenses, including attorney's fees, judgments, fines and settlement amounts
incurred by; any such person in any action or proceeding or any threatened action or proceeding, whether civil or criminal, arising out of such person's actions as a director or officer of the
Registrant of any of its subsidiaries or as a trustee of a profit-sharing trust of the Registrant or any of its subsidiaries </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pursuant
to GCL section&nbsp;145, the Registrant has purchased insurance on behalf of its present and former directors and officers against any liability asserted against or incurred
by them in such capacity or arising out of their status as such. </FONT></P>

<P><FONT SIZE=2><A
NAME="bm1089_item_16._exhibits"> </A>
<A NAME="toc_bm1089_4"> </A>
<BR></FONT><FONT SIZE=2><B>Item 16.&nbsp;&nbsp;&nbsp;&nbsp;</B></FONT><FONT SIZE=2><B><I>Exhibits    <BR>  </I></B></FONT></P>

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<TABLE WIDTH="100%" BORDER=0 CELLSPACING=0 CELLPADDING=0>
<TR VALIGN="BOTTOM">
<TH WIDTH="10%" ALIGN="CENTER"><FONT SIZE=1><B>Exhibit<BR>
Number</B></FONT><HR NOSHADE></TH>
<TH WIDTH="3%"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH WIDTH="88%" ALIGN="CENTER"><FONT SIZE=1><B>Description of Exhibits</B></FONT><HR NOSHADE></TH>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="TOP">
<TD WIDTH="10%"><FONT SIZE=2>5.1</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="88%"><FONT SIZE=2>Opinion of Shartsis, Friese &amp; Ginsburg LLP</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="TOP">
<TD WIDTH="10%"><FONT SIZE=2><BR>
10.1</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="88%"><FONT SIZE=2><BR>
Form of Finder's Agreement between the Registrant and each of Barry Vogel &amp; Associates, CJS Securities and Sidoti &amp; Company</FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="TOP">
<TD WIDTH="10%"><FONT SIZE=2><BR>
23.1</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="88%"><FONT SIZE=2><BR>
Consent of Shartsis, Friese &amp; Ginsburg LLP (included in Exhibit 5.1)</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="TOP">
<TD WIDTH="10%"><FONT SIZE=2><BR>
23.2</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="88%"><FONT SIZE=2><BR>
Consent of PricewaterhouseCoopers LLP, Independent Accountants</FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="TOP">
<TD WIDTH="10%"><FONT SIZE=2><BR>
24.1</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="88%"><FONT SIZE=2><BR>
Power of Attorney (included in Part II of the Registration Statement under the caption "Signatures")</FONT></TD>
</TR>
</TABLE>
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<P><FONT SIZE=2><A
NAME="bm1089_item_17._undertakings"> </A>
<A NAME="toc_bm1089_5"> </A>
<BR></FONT><FONT SIZE=2><B>Item 17.&nbsp;&nbsp;&nbsp;&nbsp;</B></FONT><FONT SIZE=2><B><I>Undertakings    <BR>  </I></B></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Insofar as indemnification for liabilities arising under the Securities Act may be permitted to directors, officers and controlling persons of the Registrant
pursuant to the foregoing provisions, or otherwise, the Registrant has been advised that in the opinion of the Commission such indemnification is against public policy as expressed in the Act and is,
therefore, unenforceable. If the event that a claim for indemnification against such liabilities (other than the payment by the Registrant of expenses incurred or paid by a director, officer or
controlling person of the Registrant in the successful defense of any action, suit or proceeding) is asserted by such director, officer or controlling person in connection with the securities being
registered, the Registrant will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the question whether such
indemnification by it is against public policy as expressed in the Act and will be governed by the final adjudication of such issue. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
undersigned Registrant hereby undertakes that: </FONT></P>

<UL>
<DL compact>
<DT style='margin-bottom:-11pt;'><FONT SIZE=2>(1)</FONT></DT><DD><FONT SIZE=2>For
purposes of determining any liability under the Securities Act of 1933, the information omitted from the form of prospectus filed as part of this registration statement in
reliance upon Rule&nbsp;430A and contained in a form of prospectus filed by the Registrant pursuant to Rule&nbsp;424(b)(1) or (4)&nbsp;or 497(h) under the Securities Act of 1933 shall be deemed
to be part of this registration statement as of the time it was declared effective.
<BR><BR></FONT></DD><DT style='margin-bottom:-11pt;'><FONT SIZE=2>(2)</FONT></DT><DD><FONT SIZE=2>For
the purpose of determining any liability under the Securities Act, each post-effective amendment that contains a form of Prospectus shall be deemed to be a new
registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof. </FONT></DD></DL>
</UL>
<P ALIGN="CENTER"><FONT SIZE=2>II-3</FONT></P>

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<UL>
</UL>
<DL compact>
<DT style='margin-bottom:-11pt;'><FONT SIZE=2>(3)</FONT></DT><DD><FONT SIZE=2>For
purposes of determining any liability under the Securities Act of 1933, each filing of Registrant's annual report pursuant to section&nbsp;13(a) or section&nbsp;15(d) of the
Securities Exchange Act of 1934 (and, where applicable, each filing of an employee benefit plan's annual report pursuant to section&nbsp;15(d) of the Securities Exchange Act of 1934) that is
incorporated by reference in the registration statement shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time
shall be deemed to be the initial bona fide offering thereof. </FONT></DD></DL>
</UL>
<P ALIGN="CENTER"><FONT SIZE=2>II-4</FONT></P>

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<UL>
<UL>
</UL>
</UL>
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<P ALIGN="CENTER"><FONT SIZE=2><A
NAME="page_bp1089_1_5"> </A> </FONT></P>

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<P ALIGN="CENTER"><FONT SIZE=2><A
NAME="bp1089_signatures"> </A>
<A NAME="toc_bp1089_1"> </A>
<BR></FONT><FONT SIZE=2><B>SIGNATURES    <BR>  </B></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pursuant to the requirements of the Securities Act of 1933, the Registrant certifies that it has reasonable grounds to believe that it meets all of the
requirements for filing on Form&nbsp;S-3 and has duly caused this registration statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Dublin,
State of California, on January&nbsp;30, 2003. </FONT></P>

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<TR VALIGN="TOP">
<TD WIDTH="39%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD COLSPAN=2><FONT SIZE=2>SIMPSON MANUFACTURING CO.,&nbsp;INC.</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="39%"><FONT SIZE=2><BR>
&nbsp;</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="4%"><BR><FONT SIZE=2>By:</FONT></TD>
<TD WIDTH="54%" ALIGN="CENTER"><FONT SIZE=2><BR>
/s/&nbsp;&nbsp;</FONT><FONT SIZE=2>MICHAEL J. HERBERT</FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT><HR NOSHADE><FONT SIZE=2> Michael J. Herbert<BR></FONT> <FONT SIZE=2><I>Chief Financial Officer</I></FONT></TD>
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<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Each
person whose signature appears below hereby appoints Michael J. Herbert and Thomas J Fitzmyers, and each of them, each of whom may act without joinder of the other, as his or her
true and lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for him or her and in his or her name, place and stead, in any and all
capacities, to execute in the name and on behalf of such person any amendment or any post-effective amendment to this registration statement, and any registration statement relating to any
offering made in connection with the offering covered by this registration statement that is to be effective on filing pursuant to Rule&nbsp;462(b) under the Securities Act of 1933, as amended, and
to file the same, with exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorneys-in-fact and
agents full power and authority to do and perform each and every act and thing appropriate or necessary to be done, as fully and for all intents and purposes as he or she might or could to in person,
hereby ratifying and confirming all that said attorneys-in-fact and agents or their substitute or substitutes may lawfully do or cause to be done by virtue hereof. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pursuant
to the requirements of the Securities Act of 1933, this registration statement has been signed by the following persons in the capacities and on the dates indicated. </FONT></P>

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<TABLE WIDTH="100%" BORDER=0 CELLSPACING=0 CELLPADDING=0>
<TR VALIGN="BOTTOM">
<TH WIDTH="38%" ALIGN="CENTER"><FONT SIZE=1><B>Signature</B></FONT><HR NOSHADE></TH>
<TH WIDTH="3%"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH WIDTH="35%" ALIGN="CENTER"><FONT SIZE=1><B>Title</B></FONT><HR NOSHADE></TH>
<TH WIDTH="3%"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH WIDTH="22%" ALIGN="CENTER"><FONT SIZE=1><B>Date</B></FONT><HR NOSHADE></TH>
</TR>
<TR VALIGN="BOTTOM">
<TD WIDTH="38%" ALIGN="CENTER" VALIGN="CENTER"><BR><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="3%" VALIGN="CENTER"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="35%" VALIGN="CENTER"><FONT SIZE=2><BR>
&nbsp;</FONT></TD>
<TD WIDTH="3%" VALIGN="CENTER"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="22%" VALIGN="CENTER"><FONT SIZE=2><BR>
&nbsp;</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="38%" ALIGN="CENTER" VALIGN="CENTER"><FONT SIZE=2>/s/&nbsp;&nbsp;</FONT><FONT SIZE=2>THOMAS J FITZMYERS</FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT><HR NOSHADE><FONT SIZE=2> Thomas J Fitzmyers</FONT></TD>
<TD WIDTH="3%" VALIGN="CENTER"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="35%" VALIGN="CENTER"><FONT SIZE=2>President, Chief Executive Officer and Director (Principal Executive Officer)</FONT></TD>
<TD WIDTH="3%" VALIGN="CENTER"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="22%" ALIGN="CENTER" VALIGN="CENTER"><FONT SIZE=2>January 30, 2003</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="38%" ALIGN="CENTER" VALIGN="CENTER"><FONT SIZE=2><BR>
/s/&nbsp;&nbsp;</FONT><FONT SIZE=2>MICHAEL J. HERBERT</FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT><HR NOSHADE><FONT SIZE=2> Michael J. Herbert</FONT></TD>
<TD WIDTH="3%" VALIGN="CENTER"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="35%" VALIGN="CENTER"><FONT SIZE=2><BR>
Chief Financial Officer, Treasurer and Secretary (Principal Financial and Accounting Officer)</FONT></TD>
<TD WIDTH="3%" VALIGN="CENTER"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="22%" ALIGN="CENTER" VALIGN="CENTER"><FONT SIZE=2><BR>
January 30, 2003</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="38%" ALIGN="CENTER" VALIGN="CENTER"><FONT SIZE=2><BR>
/s/&nbsp;&nbsp;</FONT><FONT SIZE=2>BARCLAY SIMPSON</FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT><HR NOSHADE><FONT SIZE=2> Barclay Simpson</FONT></TD>
<TD WIDTH="3%" VALIGN="CENTER"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="35%" VALIGN="CENTER"><FONT SIZE=2><BR>
Chairman of the Board of Directors</FONT></TD>
<TD WIDTH="3%" VALIGN="CENTER"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="22%" ALIGN="CENTER" VALIGN="CENTER"><FONT SIZE=2><BR>
January 30, 2003</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD WIDTH="38%" ALIGN="CENTER" VALIGN="CENTER"><FONT SIZE=2><BR>
/s/&nbsp;&nbsp;</FONT><FONT SIZE=2>EARL F. CHEIT</FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT><HR NOSHADE><FONT SIZE=2> Earl F. Cheit</FONT></TD>
<TD WIDTH="3%" VALIGN="CENTER"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="35%" VALIGN="CENTER"><FONT SIZE=2><BR>
Director</FONT></TD>
<TD WIDTH="3%" VALIGN="CENTER"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="22%" ALIGN="CENTER" VALIGN="CENTER"><FONT SIZE=2><BR>
January 30, 2003</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD WIDTH="38%" ALIGN="CENTER" VALIGN="CENTER"><BR><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="3%" VALIGN="CENTER"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="35%" VALIGN="CENTER"><FONT SIZE=2><BR>
&nbsp;</FONT></TD>
<TD WIDTH="3%" VALIGN="CENTER"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="22%" VALIGN="CENTER"><FONT SIZE=2><BR>
&nbsp;</FONT></TD>
</TR>
</TABLE>
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<P ALIGN="CENTER"><FONT SIZE=2>II-5</FONT></P>

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<TR VALIGN="BOTTOM">
<TD WIDTH="38%" ALIGN="CENTER" VALIGN="CENTER"><FONT SIZE=2><BR>
/s/&nbsp;&nbsp;</FONT><FONT SIZE=2>STEPHEN B. LAMSON</FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT><HR NOSHADE><FONT SIZE=2> Stephen B. Lamson</FONT></TD>
<TD WIDTH="3%" VALIGN="CENTER"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="35%" VALIGN="CENTER"><FONT SIZE=2><BR>
Vice President and Director</FONT></TD>
<TD WIDTH="3%" VALIGN="CENTER"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="22%" ALIGN="CENTER" VALIGN="CENTER"><FONT SIZE=2><BR>
January 30, 2003</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD WIDTH="38%" ALIGN="CENTER" VALIGN="CENTER"><FONT SIZE=2><BR>
/s/&nbsp;&nbsp;</FONT><FONT SIZE=2>PETER N. LOURAS, JR.</FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT><HR NOSHADE><FONT SIZE=2> Peter N. Louras, Jr.</FONT></TD>
<TD WIDTH="3%" VALIGN="CENTER"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="35%" VALIGN="CENTER"><FONT SIZE=2><BR>
Director</FONT></TD>
<TD WIDTH="3%" VALIGN="CENTER"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="22%" ALIGN="CENTER" VALIGN="CENTER"><FONT SIZE=2><BR>
January 30, 2003</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD WIDTH="38%" ALIGN="CENTER" VALIGN="CENTER"><FONT SIZE=2><BR>
/s/&nbsp;&nbsp;</FONT><FONT SIZE=2>SUNNE WRIGHT MCPEAK</FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT><HR NOSHADE><FONT SIZE=2> Sunne Wright McPeak</FONT></TD>
<TD WIDTH="3%" VALIGN="CENTER"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="35%" VALIGN="CENTER"><FONT SIZE=2><BR>
Director</FONT></TD>
<TD WIDTH="3%" VALIGN="CENTER"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="22%" ALIGN="CENTER" VALIGN="CENTER"><FONT SIZE=2><BR>
January 30, 2003</FONT></TD>
</TR>
<TR VALIGN="BOTTOM">
<TD WIDTH="38%" ALIGN="CENTER" VALIGN="CENTER"><FONT SIZE=2><BR>
/s/&nbsp;&nbsp;</FONT><FONT SIZE=2>BARRY LAWSON WILLIAMS</FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT><HR NOSHADE><FONT SIZE=2> Barry Lawson Williams</FONT></TD>
<TD WIDTH="3%" VALIGN="CENTER"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="35%" VALIGN="CENTER"><FONT SIZE=2><BR>
Director</FONT></TD>
<TD WIDTH="3%" VALIGN="CENTER"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="22%" ALIGN="CENTER" VALIGN="CENTER"><FONT SIZE=2><BR>
January 30, 2003</FONT></TD>
</TR>
</TABLE>
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<P ALIGN="CENTER"><FONT SIZE=2>II-6</FONT></P>

<HR NOSHADE>
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<P ALIGN="CENTER"><FONT SIZE=2><A
NAME="bs1089_exhibit_index"> </A>
<A NAME="toc_bs1089_1"> </A>
<BR></FONT><FONT SIZE=2><B>EXHIBIT INDEX    <BR>  </B></FONT></P>

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<TABLE WIDTH="100%" BORDER=0 CELLSPACING=0 CELLPADDING=0>
<TR VALIGN="BOTTOM">
<TH WIDTH="10%" ALIGN="CENTER"><FONT SIZE=1><B>Exhibit<BR>
Number</B></FONT><HR NOSHADE></TH>
<TH WIDTH="3%"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH WIDTH="88%" ALIGN="CENTER"><FONT SIZE=1><B>Description of Exhibits</B></FONT><HR NOSHADE></TH>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="TOP">
<TD WIDTH="10%"><FONT SIZE=2>5.1</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="88%"><FONT SIZE=2>Opinion of Shartsis, Friese &amp; Ginsburg LLP</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="TOP">
<TD WIDTH="10%"><FONT SIZE=2><BR>
10.1</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="88%"><FONT SIZE=2><BR>
Form of Finder's Agreement between the Registrant and each of Barry Vogel &amp; Associates, CJS Securities and Sidoti &amp; Company</FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="TOP">
<TD WIDTH="10%"><FONT SIZE=2><BR>
23.1</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="88%"><FONT SIZE=2><BR>
Consent of Shartsis, Friese &amp; Ginsburg LLP (included in Exhibit 5.1)</FONT></TD>
</TR>
<TR BGCOLOR="White" VALIGN="TOP">
<TD WIDTH="10%"><FONT SIZE=2><BR>
23.2</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="88%"><FONT SIZE=2><BR>
Consent of PricewaterhouseCoopers LLP, Independent Accountants</FONT></TD>
</TR>
<TR BGCOLOR="#CCEEFF" VALIGN="TOP">
<TD WIDTH="10%"><FONT SIZE=2><BR>
24.1</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="88%"><FONT SIZE=2><BR>
Power of Attorney (included in Part II of the registration statement under the caption "Signatures")</FONT></TD>
</TR>
</TABLE>
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<BR>
<P><br><A NAME="03SFO1089_1">QuickLinks</A><br></P><!-- TOC_BEGIN -->
<FONT SIZE=2><A HREF="#toc_bk1089_1">USE OF PROCEEDS</A></FONT><BR>
<FONT SIZE=2><A HREF="#toc_bk1089_2">SELLING STOCKHOLDER</A></FONT><BR>
<FONT SIZE=2><A HREF="#toc_bk1089_3">PLAN OF DISTRIBUTION</A></FONT><BR>
<FONT SIZE=2><A HREF="#toc_bk1089_4">WHERE YOU CAN FIND MORE INFORMATION</A></FONT><BR>
<FONT SIZE=2><A HREF="#toc_bk1089_5">INCORPORATION BY REFERENCE</A></FONT><BR>
<FONT SIZE=2><A HREF="#toc_bk1089_6">LEGAL MATTERS</A></FONT><BR>
<FONT SIZE=2><A HREF="#toc_bk1089_7">EXPERTS</A></FONT><BR>
<!-- TOC_BEGIN -->
<FONT SIZE=2><A HREF="#toc_bm1089_1">PART II INFORMATION NOT REQUIRED IN PROSPECTUS</A></FONT><BR>
<UL>
<FONT SIZE=2><A HREF="#toc_bm1089_2">Item 14. Other Expenses of Issuance and Distribution.</A></FONT><BR>
<FONT SIZE=2><A HREF="#toc_bm1089_3">Item 15. Indemnification of Directors and Officers</A></FONT><BR>
<FONT SIZE=2><A HREF="#toc_bm1089_4">Item 16. Exhibits</A></FONT><BR>
<FONT SIZE=2><A HREF="#toc_bm1089_5">Item 17. Undertakings</A></FONT><BR>
</UL>
<!-- TOC_BEGIN -->
<FONT SIZE=2><A HREF="#toc_bp1089_1">SIGNATURES</A></FONT><BR>
<!-- TOC_BEGIN -->
<FONT SIZE=2><A HREF="#toc_bs1089_1">EXHIBIT INDEX</A></FONT><BR>
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</BODY>
</HTML>

</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5.1
<SEQUENCE>3
<FILENAME>a2102092zex-5_1.htm
<DESCRIPTION>EX-5.1
<TEXT>
<HTML>
<HEAD>

</HEAD>
<BODY BGCOLOR="#FFFFFF" LINK=BLUE  VLINK=PURPLE>
<BR>
<FONT SIZE=3 ><A HREF="#03SFO1089_2">QuickLinks</A></FONT>
<font size=3> -- Click here to rapidly navigate through this document</font>
<!-- TOC_END -->
<P ALIGN="RIGHT"><FONT SIZE=2><A
NAME="ca1089_exhibit_5.1"> </A>
<A NAME="toc_ca1089_1"> </A>
<BR></FONT><FONT SIZE=2><B>Exhibit 5.1    <BR>  </B></FONT></P>

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<TABLE WIDTH="100%" BORDER=0 CELLSPACING=0 CELLPADDING=0>
<TR VALIGN="BOTTOM">
<TH WIDTH="24%" ALIGN="CENTER"><FONT SIZE=1>&nbsp;</FONT><BR></TH>
<TH WIDTH="53%" ALIGN="CENTER"><FONT SIZE=1>&nbsp;</FONT><BR></TH>
<TH WIDTH="4%"><FONT SIZE=1>&nbsp;</FONT></TH>
<TH WIDTH="19%" ALIGN="LEFT"><FONT SIZE=1>&nbsp;</FONT><BR></TH>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="24%"><FONT SIZE=1>ROBERT CHARLES FRIESE<BR>
ARTHUR J. SHARTSIS<BR>
MARY JO SHARTSIS<BR>
DOUGLAS L. HAMMER<BR>
RONALD HAYES MALONE<BR>
JOEL ZELDIN<BR>
JOHN P. BROADHURST<BR>
DAVID H. KREMER<BR>
CHARLES R. RICE<BR>
ANTHONY B. LEUIN<BR>
ROBERT E. SCHABERG<BR>
TRACY L. SALISBURY<BR>
JEFFREY A. O'CONNELL<BR>
CAROLYN R. KLASCO<BR>
JONATHAN M. KENNEDY<BR>
ADAM ELSESSER<BR>
STEVEN O. GASSER<BR>
BARBARA W. STAMAN<BR>
ZESARA C. CHAN<BR>
GEOFFREY W. HAYNES<BR>
CHRISTOPHER J. RUPRIGHT<BR>
CAROLYN S. REISER<BR>
ROBERT CHARLES WARD<BR>
JAMES P. MARTIN<BR>
JAHAN P. RAISSI<BR>
FRANK A. CIALONE<BR>
JOHN F. MILANI<BR>
NEIL J. KOREN<BR>
ERICK C. HOWARD<BR>
ALISSA A. CHACKO<BR>
ANTHONY J. CALDWELL<BR>
AMY L. HESPENHEIDE<BR>
MILLIE LAUREN CHOU<BR>
TRACY A. DONSKY<BR>
LATISHA R. BROWN<BR>
JAMES J. FROLIK<BR>
KELLIE ANN AKI TAKENAKA<BR>
RICHARD F. MUNZINGER<BR>
CECILY D. FREYERMUTH</FONT></TD>
<TD WIDTH="53%" ALIGN="CENTER"><FONT SIZE=4><B>SHARTSIS, FRIESE&nbsp;&amp; GINSBURG LLP<BR> </B></FONT><FONT SIZE=2><B><BR>
EIGHTEENTH FLOOR<BR>
ONE MARITIME PLAZA<BR>
SAN FRANCISCO, CALIFORNIA 94111</B></FONT></TD>
<TD WIDTH="4%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="19%"><FONT SIZE=1>TELEPHONE<BR>
(415)&nbsp;421-6500<BR>
<BR>
FACSIMILE<BR>
(415)&nbsp;421-2922<BR>
<BR>
WEBSITE<BR>
www.sfglaw.com<BR>
<BR>
SENIOR COUNSEL<BR>
Alan J. Robin<BR>
<BR>
COUNSEL<BR>
Monique V. Alonso<BR>
Winnifred C. Ward<BR>
Joan L. Grant<BR>
Ellyn T. Roberts<BR>
Mary Kay Kennedy</FONT></TD>
</TR>
</TABLE>
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<P ALIGN="CENTER"><FONT SIZE=2>January&nbsp;30, 2003 </FONT></P>

<P><FONT SIZE=2>Simpson
Manufacturing Co.,&nbsp;Inc.<BR>
4120 Dublin Boulevard, Suite 400<BR>
Dublin, California 94568 </FONT></P>

<P ALIGN="CENTER"><FONT SIZE=2><A
NAME="ca1089_re__simpson_manufacturing_co.,__re_02524"> </A>
<A NAME="ca1089_simpson_#160;manufacturing_#16__sim01777"> </A>
<A NAME="toc_ca1089_2"> </A>
<BR></FONT><FONT SIZE=2><B>Re: Simpson Manufacturing Co.,&nbsp;Inc.&#151;Registration Statement on Form&nbsp;S-3    <BR>  </B></FONT></P>


<P><FONT SIZE=2>Ladies
and Gentlemen: </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
are counsel for Simpson Manufacturing Co.,&nbsp;Inc., a Delaware corporation (the "Company"), in connection with its Registration Statement on Form&nbsp;S-3 under the
Securities Act of 1933, as amended, relating to the proposed sale by Simpson PSB Fund of 2,000,000 shares of the Company's Common Stock, par value of $.01 per share. We are of the opinion that such
shares being so registered for sale by Simpson PSB Fund have been duly authorized and are, and when sold and delivered as contemplated in such Registration Statement will be, validly issued, fully
paid and non-assessable. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We
hereby consent to the filing of this opinion with the Securities and Exchange Commission as an exhibit to such Registration Statement. </FONT></P>

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<TD WIDTH="39%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD COLSPAN=2><FONT SIZE=2>Very truly yours,</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="39%"><FONT SIZE=2><BR>
&nbsp;</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD COLSPAN=2><BR><FONT SIZE=2>SHARTSIS, FRIESE &amp; GINSBURG LLP</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="39%"><FONT SIZE=2><BR>
&nbsp;</FONT></TD>
<TD WIDTH="3%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="4%"><BR><FONT SIZE=2>By:</FONT></TD>
<TD WIDTH="54%" ALIGN="CENTER"><FONT SIZE=2><BR>
/s/&nbsp;&nbsp;</FONT><FONT SIZE=2>DOUGLAS L. HAMMER</FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT><HR NOSHADE><FONT SIZE=2> Douglas L. Hammer<BR></FONT>
</TD>
</TR>
</TABLE>
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<BR>
<P><br><A NAME="03SFO1089_2">QuickLinks</A><br></P><!-- TOC_BEGIN -->
<UL>
<FONT SIZE=2><A HREF="#toc_ca1089_1">Exhibit 5.1</A></FONT><BR>
</UL>
<FONT SIZE=2><A HREF="#toc_ca1089_2">Simpson&#160;Manufacturing&#160;Co.&#44;&#160;Inc.&#160;Registration&#160;Statement&#160;on&#160;Form&#160;S&#150;3</A></FONT><BR>

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</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-10.1
<SEQUENCE>4
<FILENAME>a2102092zex-10_1.htm
<DESCRIPTION>EX-10.1
<TEXT>
<HTML>
<HEAD>

</HEAD>
<BODY BGCOLOR="#FFFFFF" LINK=BLUE  VLINK=PURPLE>
<BR>
<FONT SIZE=3 ><A HREF="#03SFO1089_3">QuickLinks</A></FONT>
<font size=3> -- Click here to rapidly navigate through this document</font>
<!-- TOC_END -->
<P ALIGN="RIGHT"><FONT SIZE=2><A
NAME="cd1089_exhibit_10.1"> </A>
<A NAME="toc_cd1089_1"> </A>
<BR></FONT><FONT SIZE=2><B>EXHIBIT 10.1    <BR>  </B></FONT></P>

<P ALIGN="CENTER"><FONT SIZE=2><A
NAME="cd1089_finder_s_agreement"> </A>
<A NAME="toc_cd1089_2"> </A>
<BR></FONT><FONT SIZE=2><B>FINDER'S AGREEMENT    <BR>  </B></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This FINDER'S AGREEMENT is made as of&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;,
2003, by and between&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;("Finder") and Simpson PSB Fund, a California nonprofit public benefit
corporation ("PSB"), with reference to the following facts: </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;PSB
proposes to sell some or all of its 2,000,000 shares ("Shares") of the common stock of Simpson Manufacturing Co.,&nbsp;Inc. Finder is
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT><FONT SIZE=2><B>[and does not regularly act as a finder in connection with such transactions]
</B></FONT><FONT SIZE=2>. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;In
consideration of the mutual covenants herein, Finder and PSB agree as follows: </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.&nbsp;&nbsp;&nbsp;&nbsp;<U>Engagement</U>.&nbsp;&nbsp;&nbsp;&nbsp;PSB
hereby engages Finder, and Finder hereby accepts such engagement, as a finder of one or more potential buyers
(each, a "Buyer") of up to 2,000,000 Shares in an offering registered on Form&nbsp;S-3 under the Securities Act of 1933, as amended (the "1933 Act"). Finder shall use such efforts as
Finder considers appropriate to introduce to PSB one or more Buyers. PSB shall have no duty or obligation whatsoever to enter into any transaction with any Buyer. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.&nbsp;&nbsp;&nbsp;&nbsp;<U>Activities</U>.&nbsp;&nbsp;&nbsp;&nbsp;As
a finder, Finder shall limit its activities to introducing one or more potential Buyers to PSB. Finder shall not,
directly or indirectly, under this Agreement, offer or sell or attempt to offer or sell any securities or participate or assist in any way in any negotiations between any Buyer and PSB. Finder shall
not act as a broker or dealer with respect to any offer or sale of Shares. Finder shall have no right, power, authority or duty to act for or on behalf of, to sign for, to commit or to bind PSB in any
respect, whatsoever. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.&nbsp;&nbsp;&nbsp;&nbsp;<U>Term</U>.&nbsp;&nbsp;&nbsp;&nbsp;Either
party may terminate this Agreement, with or without cause, on ten days' prior notice to the other party; provided
that (a)&nbsp;either party may terminate this Agreement immediately by notice to the other party of a breach of this Agreement by the other party, (b)&nbsp;all provisions of this Agreement, other
than sections 1 and 2, shall survive the termination of this Agreement with respect to Buyers who
engage in transactions with PSB within 180&nbsp;days from such termination, except that the provisions of section&nbsp;4 shall survive only if Finder shall not have breached this Agreement, and
(c)&nbsp;sections 5 through 19 shall survive any termination of this Agreement. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.&nbsp;&nbsp;&nbsp;&nbsp;<U>Compensation</U>.&nbsp;&nbsp;&nbsp;&nbsp;As
compensation for the services rendered by Finder hereunder, PSB shall pay Finder an amount equal to
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.&nbsp;&nbsp;&nbsp;&nbsp;<U>Independent
Contractor</U>.&nbsp;&nbsp;&nbsp;&nbsp;Neither Finder nor PSB shall have any authority or power to incur or create, or shall incur or create,
any obligation, express or implied, on behalf of the other. In all matters relating to this Agreement, PSB shall be solely responsible for its acts and the acts of its employees and Finder shall be
solely responsible for its acts and the acts of its employees. Finder is and will hereafter act as an independent contractor and not as an employee of PSB and nothing in this Agreement may be
interpreted or construed to create any employment, partnership, joint venture or other similar relationship between Finder and PSB. Finder shall be solely responsible for all matters relating to the
payment of Finder's employees, agents and independent contractors, including compliance with workers compensation, unemployment, disability insurance, social security, withholding and all other
federal, state and local laws, rules and regulations governing such matters. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.&nbsp;&nbsp;&nbsp;&nbsp;<U>Expenses</U>.&nbsp;&nbsp;&nbsp;&nbsp;Finder
shall be responsible for all expenses incurred by Finder in performing services pursuant to this Agreement. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7.&nbsp;&nbsp;&nbsp;&nbsp;<U>Finder's
Representations and Covenants</U>.&nbsp;&nbsp;&nbsp;&nbsp;Finder represents, warrants and covenants to PSB, as follows: </FONT></P>

<UL>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)&nbsp;&nbsp;Finder
has all business and professional licenses, registrations and permits necessary or appropriate, and shall timely obtain any such license, registration or permit
that may hereafter become necessary or appropriate, under all applicable laws and regulations to perform the services contemplated by this Agreement. </FONT></P>

</UL>
<HR NOSHADE>
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<A NAME="page_cd1089_1_2"> </A>
<UL>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)&nbsp;&nbsp;If
Finder is a member of the National Association of Securities Dealers,&nbsp;Inc. (the "NASD"), or a registered representative or registered principal of such a
member, a registered principal of Finder or such member shall sign or initial any written communication provided by PSB to Finder, and Finder shall file any such written communication with the NASD if
required to do so pursuant to any rules of
the NASD and shall otherwise comply with all rules of the NASD that apply to Finder's services as contemplated by this Agreement. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c)&nbsp;&nbsp;If
Finder is subject to additional laws, regulations or rules of any other business, professional, governmental or self-regulatory organization, Finder shall
comply with all such laws, regulations and rules with respect to any written communication provided by PSB to Finder. </FONT></P>


<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(d)&nbsp;&nbsp;Neither
Finder nor any partner, director or officer of Finder is or would be disqualified from participation in any capacity in any offering under Regulation&nbsp;A
promulgated by the Securities and Exchange Commission under the 1933 Act pursuant to paragraph&nbsp;(b) or (c)&nbsp;of Rule&nbsp;262 of Regulation&nbsp;A. </FONT></P>

</UL>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.&nbsp;&nbsp;&nbsp;&nbsp;<U>Liability
of PSB</U>.&nbsp;&nbsp;&nbsp;&nbsp;PSB shall not be responsible for any misrepresentation or omission of Finder. Finder agrees to hold PSB and
its Affiliates harmless from and against any and all claims, liabilities, damages and expenses that may arise as a result of any act or omission of Finder. Finder shall indemnify and defend PSB and
its Affiliates and hold them harmless, to the fullest extent permitted by law, from and against any and all claims, liabilities, losses, damages and expenses (including, without limitation, reasonable
attorneys' fees and expenses, all expert witnesses' fees and expenses and all costs of investigation), as they are incurred, that are directly or indirectly related to or otherwise suffered or
incurred in connection with Finder's bad faith, negligence or willful misconduct, any violation by Finder of federal or state securities laws or any breach by Finder of this Agreement. "Affiliate"
means, when used with reference to a specified person, any person directly or indirectly controlling, controlled by or under common control with the specified person, any trust or foundation to which
the specified person has made a majority of the grants, donations or contributions received by that trust or foundation, a person owning or controlling ten percent or more of the outstanding voting
securities of the specified person, a person ten percent or more of whose outstanding voting securities are owned or controlled by the specified person, any employee, agent, officer, director,
partner, manager, member or trustee of the specified person, and if the specified person is an officer, director, general partner, manager, member or trustee, any corporation, partnership, limited
liability company or trust for which the specified person acts in any such capacity. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9.&nbsp;&nbsp;&nbsp;&nbsp;<U>Liability
of Finder</U>.&nbsp;&nbsp;&nbsp;&nbsp;Finder shall not be responsible for any misrepresentation or omission on the part of PSB. PSB agrees to
hold Finder harmless from and against any and all claims, liabilities, damages and expenses that may arise as a result of any act or omission of PSB. PSB shall indemnify and defend Finder and its
Affiliates, to the fullest extent permitted by law, from and against any and all claims, liabilities, losses, damages and expenses (including, without limitation, reasonable attorneys' fees and
expenses, all expert witnesses' fees and expenses and all costs of investigation), as they are incurred, that are directly or indirectly related to or otherwise suffered or incurred in connection with
PSB's bad faith, negligence or willful misconduct, any violation by PSB of federal or state securities laws or any breach by PSB of this Agreement. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10.&nbsp;&nbsp;<U>Amendments</U>.&nbsp;&nbsp;&nbsp;&nbsp;This
Agreement may not be amended or modified except by a writing signed by both parties. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11.&nbsp;&nbsp;<U>Governing
Law</U>.&nbsp;&nbsp;&nbsp;&nbsp;This Agreement shall be governed by and construed and interpreted in accordance with the laws of the State of
California. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12.&nbsp;&nbsp;<U>Assignment</U>.&nbsp;&nbsp;&nbsp;&nbsp;Finder
may not assign any rights under this Agreement or delegate any duties under this Agreement. Any attempted or
purported assignment or delegation of this Agreement or any rights or duties hereunder by Finder shall be void. </FONT></P>

<P ALIGN="CENTER"><FONT SIZE=2>2</FONT></P>

<HR NOSHADE>
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<A NAME="page_cd1089_1_3"> </A>
<BR>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13.&nbsp;&nbsp;<U>Entire
Agreement</U>.&nbsp;&nbsp;&nbsp;&nbsp;This Agreement contains the entire agreement of the parties and supersedes all prior negotiations,
correspondence, understandings and agreements between the parties, regarding the subject matter hereof. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14.&nbsp;&nbsp;<U>Headings;
Gender; Number; References</U>.&nbsp;&nbsp;&nbsp;&nbsp;The headings at the beginning of the sections hereof are solely for convenience of
reference and are not part of this Agreement. As used herein, each gender includes each other gender, the singular includes the plural and vice versa, as the context may require and "person" shall be
deemed to include natural person and corporation, limited liability company, partnership, trust or other entity. All references to sections are intended to refer to sections of this Agreement, except
as otherwise indicated. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15.&nbsp;&nbsp;<U>No
Waiver</U>.&nbsp;&nbsp;&nbsp;&nbsp;No right or power of PSB shall be deemed to have been waived by any act or conduct on the part of PSB, or by any
neglect to exercise such right or power, or by any delay in so doing; and every right and power of PSB shall continue in full force and effect until such right or power is specifically waived by an
instrument in writing executed by PSB. No waiver of any right or power on any one occasion shall be deemed to be a waiver of any other right or power or of the same right or power on any subsequent
occasion. All remedies of PSB against Finder are cumulative. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;16.&nbsp;&nbsp;<U>Notices</U>.&nbsp;&nbsp;&nbsp;&nbsp;Any
notice, consent, authorization or other communication to be given hereunder shall be in writing and shall be
deemed duly given and received when delivered personally, when transmitted by facsimile, three days after being mailed by first class mail, or one business day after being deposited for
next-day delivery with a nationally recognized overnight delivery service, all charges or postage prepaid, properly addressed to the party to receive such notice at the last address
furnished for such purpose by the party to whom the notice is directed. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17.&nbsp;&nbsp;<U>Arbitration</U>.&nbsp;&nbsp;&nbsp;&nbsp;</FONT><FONT
SIZE=2><B>The parties waive their rights to seek remedies in court, including any right to a jury
trial.</B></FONT><FONT SIZE=2> The parties agree that any dispute between arising out of, relating to or in connection with this Agreement shall be resolved exclusively through binding arbitration
conducted under the auspices of JAMS pursuant to its Arbitration Rules and Procedures. The arbitration hearing shall be held in the county and state of the principal office of PSB at the time the
dispute arises. Disputes shall not be
resolved in any other forum or venue. The arbitration shall be conducted by a retired judge who is experienced in resolving disputes regarding the securities business. The parties agree that the
arbitrator shall apply the substantive law of the State of California, that limited discovery shall be conducted in accordance with JAMS' Arbitration Rules and Procedures, and that the arbitrator may
not award punitive or exemplary damages, unless (but only to the extent that) such damages are required by law to be an available remedy for any of the specific claims asserted. In accordance with
JAMS' Arbitration Rules and Procedures, the arbitrator's award shall consist of a written statement as to the disposition of each claim and the relief, if any, awarded on each claim. The award shall
not include or be accompanied by any findings of fact, conclusions of law or other written explanation of the reasons for the award. The parties understand that the right to appeal or to seek
modification of any ruling or award by the arbitrator is severely limited under state and federal law. Any award rendered by the arbitrator shall be final and binding, and judgment may be entered on
it in any court of competent jurisdiction in the county and state of the principal office of PSB at the time the award is rendered or as otherwise provided by law. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18.&nbsp;&nbsp;<U>Counterparts</U>.&nbsp;&nbsp;&nbsp;&nbsp;This
Agreement may be executed in any number of counterparts, each of which shall be deemed an original but all
of which together shall constitute one and the same instrument. </FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;19.&nbsp;&nbsp;<U>No
Third-Party Beneficiaries</U>.&nbsp;&nbsp;&nbsp;&nbsp;Neither party intends for this Agreement to benefit any third party not expressly named in this
Agreement. </FONT></P>

<P ALIGN="CENTER"><FONT SIZE=2>3</FONT></P>

<HR NOSHADE>
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<A NAME="page_cd1089_1_4"> </A>
<BR>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;IN
WITNESS WHEREOF, this Finder's Agreement has been duly executed by or on behalf of the parties hereto as of the date first written above. </FONT></P>

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<TABLE WIDTH="100%" BORDER=0 CELLSPACING=0 CELLPADDING=0>
<TR VALIGN="TOP">
<TD COLSPAN=2><FONT SIZE=2><B>PSB:</B></FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="16%"><FONT SIZE=2><B>FINDER:</B></FONT></TD>
<TD WIDTH="34%"><FONT SIZE=2>&nbsp;</FONT></TD>
</TR>
<TR VALIGN="TOP">
<TD COLSPAN=2><FONT SIZE=2><BR>
SIMPSON PSB FUND</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD COLSPAN=2><FONT SIZE=2><BR>
&nbsp;&nbsp;&nbsp;&nbsp;</FONT><HR NOSHADE></TD>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="13%"><FONT SIZE=2><BR>
By:</FONT></TD>
<TD WIDTH="34%"><FONT SIZE=2><BR>
&nbsp;&nbsp;&nbsp;&nbsp;</FONT><HR NOSHADE></TD>
<TD WIDTH="2%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="16%"><FONT SIZE=2><BR>
Signature:</FONT></TD>
<TD WIDTH="34%"><FONT SIZE=2><BR>
&nbsp;&nbsp;&nbsp;&nbsp;</FONT><HR NOSHADE></TD>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="13%"><FONT SIZE=2><BR>
&nbsp;</FONT></TD>
<TD WIDTH="34%" ALIGN="CENTER"><FONT SIZE=2><BR>
Barclay Simpson</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="16%"><FONT SIZE=2><BR>
Printed Name:</FONT></TD>
<TD WIDTH="34%"><FONT SIZE=2><BR>
&nbsp;&nbsp;&nbsp;&nbsp;</FONT><HR NOSHADE></TD>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="13%"><FONT SIZE=2><BR>
&nbsp;</FONT></TD>
<TD WIDTH="34%" ALIGN="CENTER"><FONT SIZE=2><BR>
President</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="16%"><FONT SIZE=2><BR>
Title (if any):</FONT></TD>
<TD WIDTH="34%"><FONT SIZE=2><BR>
&nbsp;&nbsp;&nbsp;&nbsp;</FONT><HR NOSHADE></TD>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="13%"><FONT SIZE=2><BR>
Address:</FONT></TD>
<TD WIDTH="34%"><FONT SIZE=2><BR>
3669 Mt. Diablo Blvd.</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="16%"><FONT SIZE=2><BR>
Address:</FONT></TD>
<TD WIDTH="34%"><FONT SIZE=2><BR>
&nbsp;&nbsp;&nbsp;&nbsp;</FONT><HR NOSHADE></TD>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="13%"><FONT SIZE=2><BR>
&nbsp;</FONT></TD>
<TD WIDTH="34%"><FONT SIZE=2><BR>
Lafayette, CA 94549</FONT></TD>
<TD WIDTH="2%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="16%"><FONT SIZE=2><BR>
&nbsp;</FONT></TD>
<TD WIDTH="34%"><FONT SIZE=2><BR>
&nbsp;&nbsp;&nbsp;&nbsp;</FONT><HR NOSHADE></TD>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="13%"><FONT SIZE=2><BR>
Telephone:</FONT></TD>
<TD WIDTH="34%"><FONT SIZE=2><BR>
&nbsp;&nbsp;&nbsp;&nbsp;</FONT><HR NOSHADE></TD>
<TD WIDTH="2%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="16%"><FONT SIZE=2><BR>
Telephone:</FONT></TD>
<TD WIDTH="34%"><FONT SIZE=2><BR>
&nbsp;&nbsp;&nbsp;&nbsp;</FONT><HR NOSHADE></TD>
</TR>
<TR VALIGN="TOP">
<TD WIDTH="13%"><FONT SIZE=2><BR>
Facsimile:</FONT></TD>
<TD WIDTH="34%"><FONT SIZE=2><BR>
&nbsp;&nbsp;&nbsp;&nbsp;</FONT><HR NOSHADE></TD>
<TD WIDTH="2%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD WIDTH="16%"><FONT SIZE=2><BR>
Facsimile:</FONT></TD>
<TD WIDTH="34%"><FONT SIZE=2><BR>
&nbsp;&nbsp;&nbsp;&nbsp;</FONT><HR NOSHADE></TD>
</TR>
</TABLE>
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<P ALIGN="CENTER"><FONT SIZE=2>4</FONT></P>

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<BR>
<P><br><A NAME="03SFO1089_3">QuickLinks</A><br></P><!-- TOC_BEGIN -->
<UL>
<FONT SIZE=2><A HREF="#toc_cd1089_1">EXHIBIT 10.1</A></FONT><BR>
</UL>
<FONT SIZE=2><A HREF="#toc_cd1089_2">FINDER'S AGREEMENT</A></FONT><BR>
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</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.2
<SEQUENCE>5
<FILENAME>a2102092zex-23_2.htm
<DESCRIPTION>EX-23.2
<TEXT>
<HTML>
<HEAD>

</HEAD>
<BODY BGCOLOR="#FFFFFF" LINK=BLUE  VLINK=PURPLE>
<BR>
<FONT SIZE=3 ><A HREF="#03SFO1089_4">QuickLinks</A></FONT>
<font size=3> -- Click here to rapidly navigate through this document</font>
<!-- TOC_END -->
<P ALIGN="RIGHT"><FONT SIZE=2><A
NAME="ch1089_exhibit_23.2"> </A>
<A NAME="toc_ch1089_1"> </A>
<BR></FONT><FONT SIZE=2><B>EXHIBIT 23.2    <BR>  </B></FONT></P>

<P ALIGN="CENTER"><FONT SIZE=2><A
NAME="ch1089_consent_of_independent_accountants"> </A>
<A NAME="toc_ch1089_2"> </A>
<BR></FONT><FONT SIZE=2><B>CONSENT OF INDEPENDENT ACCOUNTANTS    <BR>  </B></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We hereby consent to the incorporation by reference in this Registration Statement on Form&nbsp;S-3 of our report dated February&nbsp;4, 2002,
relating to the financial statements and financial statement schedules of Simpson Manufacturing Co.,&nbsp;Inc., which appears in Simpson Manufacturing Co.,&nbsp;Inc.'s Annual Report on
Form&nbsp;10-K for the year ended December&nbsp;31, 2001. We also consent to the references to us under the heading "Experts" in such Registration Statement. </FONT></P>

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<TD WIDTH="60%"><FONT SIZE=2><BR>
/s/&nbsp;&nbsp;</FONT><FONT SIZE=2>PRICEWATERHOUSECOOPERS LLP</FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT></TD>
<TD WIDTH="40%"><FONT SIZE=2><BR>
&nbsp;</FONT></TD>
</TR>
</TABLE>
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<P><FONT SIZE=2>San
Francisco, California<BR>
January&nbsp;31, 2003 </FONT></P>

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<BR>
<P><br><A NAME="03SFO1089_4">QuickLinks</A><br></P><!-- TOC_BEGIN -->
<UL>
<FONT SIZE=2><A HREF="#toc_ch1089_1">EXHIBIT 23.2</A></FONT><BR>
</UL>
<FONT SIZE=2><A HREF="#toc_ch1089_2">CONSENT OF INDEPENDENT ACCOUNTANTS</A></FONT><BR>
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