0000950134-04-005637 8-K 2 20040421 12 20040421 CADENCE DESIGN SYSTEMS INC 0000813672 7372 770148231 DE 0102 8-K 34 001-10606 04745732 2655 SEELY ROAD BLDG 5 SAN JOSE CA 95134 4089431234 555 RIVER OAKS PARKWAY SAN JOSE CA 95134 ECAD INC /DE/ 19880609 8-K 1 f98247e8vk.htm FORM 8-K EX-99.1 3 f98247exv99w1.txt EXHIBIT 99.1