    <SEC-DOCUMENT>0001213900-17-001735-index.html : 20170223
    <SEC-HEADER>0001213900-17-001735.hdr.sgml : 20170223
    <ACCEPTANCE-DATETIME>20170223090315
    ACCESSION NUMBER:		0001213900-17-001735
    CONFORMED SUBMISSION TYPE:	DEFA14A
    PUBLIC DOCUMENT COUNT:		9
    FILED AS OF DATE:		20170223
    DATE AS OF CHANGE:		20170223
    EFFECTIVENESS DATE:		20170223

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			SIMPSON MANUFACTURING CO INC /CA/
    		CENTRAL INDEX KEY:			0000920371
    		STANDARD INDUSTRIAL CLASSIFICATION:	CUTLERY, HANDTOOLS & GENERAL HARDWARE [3420]
    		IRS NUMBER:				943196943
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		DEFA14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-13429
    		FILM NUMBER:		17630909

    	BUSINESS ADDRESS:
    		STREET 1:		5956 W LAS POSITAS BLVD
    		CITY:			PLEASANTON
    		STATE:			CA
    		ZIP:			94588
    		BUSINESS PHONE:		9255609000

    	MAIL ADDRESS:
    		STREET 1:		5956 W LAS POSITAS BLVD
    		CITY:			PLEASANTON
    		STATE:			CA
    		ZIP:			94588
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>DEFA14A
    <SEQUENCE>1
    <FILENAME>f8k022217_simpsonmanf.htm
    <DESCRIPTION>CURRENT REPORT
    <TEXT>
    Document 1 - file: f8k022217_simpsonmanf.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.1
    <SEQUENCE>2
    <FILENAME>f8k022217ex99i_simpson.htm
    <DESCRIPTION>PRESS RELEASE DATED FEBRUARY 23, 2017
    <TEXT>
    Document 2 - file: f8k022217ex99i_simpson.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.2
    <SEQUENCE>3
    <FILENAME>f8k022217ex99ii_simpson.htm
    <DESCRIPTION>INVESTOR PRESENTATION DATED FEBRUARY 23, 2017
    <TEXT>
    Document 3 - file: f8k022217ex99ii_simpson.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>4
    <FILENAME>image_1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 4 - file: image_1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>5
    <FILENAME>image_2.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 5 - file: image_2.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>image_3.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 6 - file: image_3.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>image_4.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 7 - file: image_4.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>image_5.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 8 - file: image_5.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>image_6.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 9 - file: image_6.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>