0000950149-01-500711 10-Q 3 20010331 20010514 SIMPSON MANUFACTURING CO INC /CA/ 0000920371 3420 943196943 DE 1231 10-Q 34 001-13429 1634127 4637 CHABOT DR STE 200 PLEASANTON CA 94588 5106099912 4637 CHABOT DR STE 200 PLEASANTON CA 94588 10-Q 1 f72588e10-q.txt FORM 10-Q FOR THE PERIOD ENDED MARCH 31, 2001 EX-11 2 f72588ex11.txt STATEMENTS RE COMPUTATION OF EARNINGS PER SHARE EX-18 3 f72588ex18.txt LETTER RE CHANGE IN ACCOUNTING PRINCIPLES