0000920371-06-000037 4 1 20060914 20060915 20060915 SIMPSON MANUFACTURING CO INC /CA/ 0000920371 3420 943196943 DE 1231 4120 DUBLILN BLVD STE 400 DUBLIN CA 94568 9255609000 4120 DUBLIN BLVD STE 400 DUBLIN CA 94568 LAMSON STEPHEN B 0001035241 4 34 001-13429 061092975 4120 DUBLIN BLVD SUITE 400 DUBLIN CA 94568 4 1 edgar.xml PRIMARY DOCUMENT