<SUBMISSION>
<ACCESSION-NUMBER>0000920371-01-000006
<TYPE>4
<PUBLIC-DOCUMENT-COUNT>1
<PERIOD>20010228
<FILING-DATE>20010305
<SUBJECT-COMPANY>
<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>4
<ACT>34
<FILE-NUMBER>001-13429
<FILM-NUMBER>1560838
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>4637 CHABOT DR
<STREET2>STE 200
<CITY>PLEASANTON
<STATE>CA
<ZIP>94588
<PHONE>5106099912
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>4637 CHABOT DR
<STREET2>STE 200
<CITY>PLEASANTON
<STATE>CA
<ZIP>94588
</MAIL-ADDRESS>
</SUBJECT-COMPANY>
<REPORTING-OWNER>
<COMPANY-DATA>
<CONFORMED-NAME>TOWSEND DONALD M
<CIK>0001036046
<ASSIGNED-SIC>
<RELATIONSHIP>OFFICER
</COMPANY-DATA>
<FILING-VALUES>
<FORM-TYPE>4
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>4637 CHABOT DRIVE
<STREET2>SUITE 200
<CITY>PLEASANTON
<STATE>CA
<ZIP>94588
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>4637 CHABOT DRIVE
<STREET2>SUITE 200
<CITY>PLEASANTON
<STATE>CA
<ZIP>94588
</MAIL-ADDRESS>
</REPORTING-OWNER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>0001.txt
<DESCRIPTION>FORM 4 - FEBRUARY 2001
<TEXT>


                             U.S. SECURITIES AND EXCHANGE COMMISSION
                                        WASHINGTON, D.C.
                                             FORM 4
                           STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

( ) Check box if no longer subject to Section 16.
Form 4 or Form 5 obligations may continue. See Instructions 1(b).

1.  Name and Address of Reporting Person
    TOWNSEND, DONALD M.
    4120 Dublin Blvd., Suite 400
    Dublin, CA  94568
    USA

2.  Issuer Name and Ticker or Trading Symbol
    SIMPSON MANUFACTURING CO., INC. - (SSD)

3.  IRS or Social Security Number of Reporting Person (Voluntary)

4.  Statement for Month/Year
    FEBRUARY 2001

5.  If Amendment, Date of Original (Month/Year)

6.  Relationship of Reporting Person to Issuer (Check all applicable)
    ( ) Director                    ( ) 10% Owner
    (X) Officer (give title below)  ( ) Other (specify below)
    PRESIDENT AND C.E.O. OF SIMPSON DURA-VENT COMPANY, INC.

7.  Individual or Joint/Group Filing (Check Applicable Line)
    [X] Form filed by One Reporting Person
    [ ] Form filed by More than One Reporting Person

<TABLE>
<CAPTION>
__________________________________________________________________________________________________________________________________
 Table I -- Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned                                                |
__________________________________________________________________________________________________________________________________|
1. Title of Security       |2.    |3.    |4.Securities Acquired (A)         |5.Amount of        |6.Dir |7.Nature of Indirect      |
                           | Transaction |  or Disposed of (D)              |  Securities       |ect   |  Beneficial Ownership    |
                           |      |      |                                  |  Beneficially     |(D)or |                          |
                           |      |    | |                  | A/|           |  Owned at         |Indir |                          |
                           | Date |Code|V|    Amount        | D |    Price  |  End of Month     |ect(I)|                          |
__________________________________________________________________________________________________________________________________|
<S>                        <C>    <C>  <C><C>               <C> <C>         <C>                 <C>    <C>
Common Stock               | 02/27|    | |                  |   |           |                   |      |                          |
                           | /2001|  S | |       12,500     | D |           |         42,778    |   D  |                          |
----------------------------------------------------------------------------------------------------------------------------------|
                           |      |    | |                  |   |           |                   |      |                          |
                           |      |    | |                  |   |           |                   |      |                          |
----------------------------------------------------------------------------------------------------------------------------------|
                           |      |    | |                  |   |           |                   |      |                          |
                           |      |    | |                  |   |           |                   |      |                          |
----------------------------------------------------------------------------------------------------------------------------------|
                           |      |    | |                  |   |           |                   |      |                          |
                           |      |    | |                  |   |           |                   |      |                          |
----------------------------------------------------------------------------------------------------------------------------------|
__________________________________________________________________________________________________________________________________|
</TABLE>

<TABLE>
<CAPTION>
__________________________________________________________________________________________________________________________________
 Table II -- Derivative Securities Acquired, Disposed of, or Beneficially Owned                                                   |
__________________________________________________________________________________________________________________________________|
1.Title of Derivative |2.Con-  |3.   |4.    |5.Number of De |6.Date Exer|7.Title and Amount  |8.Price |9.Number    |10.|11.Nature |
  Security            |version |Transaction | rivative Secu |cisable and|  of Underlying     |of Deri |of Deriva   |Dir|of        |
                      |or Exer |     |      | rities Acqui  |Expiration |  Securities        |vative  |tive        |ect|Indirect  |
                      |cise    |     |      | red(A) or Dis |Date(Month/|                    |Secu    |Securities  |(D)|Beneficial|
                      |Price of|     |      | posed of(D)   |Day/Year)  |                    |rity    |Benefi      |or |Ownership |
                      |Deriva- |     |      |               |Date |Expir|                    |        |ficially    |Ind|          |
                      |tive    |     |      |           | A/|Exer-|ation|   Title and Number |        |Owned at    |ire|          |
                      |Secu-   |     |    | |           | D |cisa-|Date |   of Shares        |        |End of      |ct |          |
                      |rity    |Date |Code|V|  Amount   |   |ble  |     |                    |        |Month       |(I)|          |
----------------------------------------------------------------------------------------------------------------------------------|
<S>                   <C>      <C>   <C>  <C><C>        <C> <C>   <C>   <C>          <C>     <C>      <C>          <C> <C>
| Options on          |        |     |    | |           |   |     |     |            |       |        |            |   |          |
| Common Stock        |        |     |    | |           |   |     |     |            |       |        |     1,875  | D |          |
----------------------------------------------------------------------------------------------------------------------------------|
| Options on          |        |     |    | |           |   |     |     |            |       |        |            |   |          |
| Common Stock        |        |     |    | |           |   |     |     |            |       |        |     1,875  | D |          |
----------------------------------------------------------------------------------------------------------------------------------|
| Options on          |        |     |    | |           |   |     |     |            |       |        |            |   |          |
| Common Stock        |        |     |    | |           |   |     |     |            |       |        |       625  | D |          |
----------------------------------------------------------------------------------------------------------------------------------|
| Options on          |        |     |    | |           |   |     |     |            |       |        |            |   |          |
| Common Stock        |        |     |    | |           |   |     |     |            |       |        |       625  | D |          |
----------------------------------------------------------------------------------------------------------------------------------|
| Options on          |        |     |    | |           |   |     |     |            |       |        |            |   |          |
| Common Stock        |        |     |    | |           |   |     |     |            |       |        |       625  | D |          |
----------------------------------------------------------------------------------------------------------------------------------|
| Options on          |        |     |    | |           |   |     |     |            |       |        |            |   |          |
| Common Stock        |        |     |    | |           |   |     |     |            |       |        |       625  | D |          |
----------------------------------------------------------------------------------------------------------------------------------|
| Options on          |        |     |    | |           |   |     |     |            |       |        |            |   |          |
| Common Stock        |        |     |    | |           |   |     |     |            |       |        |       625  | D |          |
----------------------------------------------------------------------------------------------------------------------------------|
| Options on          |        |     |    | |           |   |     |     |            |       |        |            |   |          |
| Common Stock        |        |     |    | |           |   |     |     |            |       |        |       625  | D |          |
----------------------------------------------------------------------------------------------------------------------------------|
| Options on          |        |     |    | |           |   |     |     |            |       |        |            |   |          |
| Common Stock        |        |     |    | |           |   |     |     |            |       |        |       625  | D |          |
----------------------------------------------------------------------------------------------------------------------------------|
__________________________________________________________________________________________________________________________________|
</TABLE>

Explanation of Responses:


SIGNATURE OF REPORTING PERSON

BY:  Donald M. Townsend


/s/DONALD M. TOWNSEND
----------------------------------------

DATE


February 27, 2001
----------------------------------------

</TEXT>
</DOCUMENT>
</SUBMISSION>
