0000920371-99-000010 4 1 19990430 19990505 SIMPSON MANUFACTURING CO INC /CA/ 0000920371 3420 943196943 CA 1231 4 34 001-13429 99610923 4637 CHABOT DR STE 200 PLEASANTON CA 94588 5106099912 4637 CHABOT DR STE 200 PLEASANTON CA 94588 FITZMYERS THOMAS J 0000924811 0000 OFFICER CA 1231 4 4637 CHABOT DR STE 200 PLEASANTON CA 94588 4637 CHABOT DR STE 200 PLEASANTON CA 94588 4 1 000092037199000010-001-seq1-4.txt FORM 4 - APRIL 1999