0000920371-99-000028 4 1 19990531 19990604 SIMPSON MANUFACTURING CO INC /CA/ 0000920371 3420 943196943 DE 1231 4 34 001-13429 99640849 4637 CHABOT DR STE 200 PLEASANTON CA 94588 5106099912 4637 CHABOT DR STE 200 PLEASANTON CA 94588 WILLIAMS BARRY LAWSON 0001035242 DIRECTOR 4 4637 CHABOT DRIVE SUITE 200 PLESANTON CA 94588 4637 CHABOT DRIVE SUITE 200 PLEASENTON CA 94588 4 1 000092037199000028-001-seq1-4.txt FORM 4 - MAY 1999