0000912057-97-018421 8-K 4 19970507 2 5 7 19970520 NYSE CADENCE DESIGN SYSTEMS INC 0000813672 7372 770148231 DE 1231 8-K 34 001-10606 97611904 555 RIVER OAKS PKWY SAN JOSE CA 95134 4089431234 555 RIVER OAKS PARKWAY SAN JOSE CA 95134 ECAD INC /DE/ 19880609 8-K 1 000091205797018421-001-seq1-8-k.txt 8-K EX-99.1 2 000091205797018421-002-seq2-ex-99-1.txt EXHIBIT 99.1 EX-99.2 3 000091205797018421-003-seq3-ex-99-2.txt EXHIBIT 99.2 EX-99.3 4 000091205797018421-004-seq4-ex-99-3.txt EXHIBIT 99.3