- -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 ---------------- SCHEDULE 14D-9 (AMENDMENT NO. 30) ---------------- Solicitation/Recommendation Statement Pursuant to Section 14(d)(4) of the Securities Exchange Act of 1934 QUICKTURN DESIGN SYSTEMS, INC. (Name of Subject Company) QUICKTURN DESIGN SYSTEMS, INC. (Name of Person(s) Filing Statement) COMMON STOCK, PAR VALUE $.001 PER SHARE (including the associated preferred stock purchase rights) (Title of Class of Securities) ---------------- 74838E102 (CUSIP Number of Class of Securities) ---------------- KEITH R. LOBO PRESIDENT AND CHIEF EXECUTIVE OFFICER QUICKTURN DESIGN SYSTEMS, INC. 55 W. TRIMBLE ROAD SAN JOSE, CALIFORNIA 95131 (408) 914-6000 (Name, address and telephone number of person authorized to receive notice and communications on behalf of person(s) filing statement) ---------------- COPY TO: LARRY W. SONSINI, ESQ. WILSON SONSINI GOODRICH & ROSATI PROFESSIONAL CORPORATION 650 PAGE MILL ROAD PALO ALTO, CALIFORNIA 94304-1050 (650) 493-9300 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- INTRODUCTION The Solicitation/Recommendation Statement on Schedule 14D-9 (the "Schedule 14D-9") originally filed on August 24, 1998, by Quickturn Design Systems, Inc., a Delaware corporation (the "Company" or "Quickturn"), relates to an offer by MGZ Corp., a Delaware corporation ("MGZ") and a wholly owned subsidiary of Mentor Graphics Corporation, an Oregon corporation ("Mentor"), to purchase all of the outstanding shares of the common stock, par value $.001 per share (including the associated preferred stock purchase rights), of the Company. All capitalized terms used herein without definition have the respective meanings set forth in the Schedule 14D-9. ITEM 8. ADDITIONAL INFORMATION TO BE FURNISHED The response to Item 8 is hereby amended by adding the following to the end of the section entitled "Proxy Solicitation": On December 24, 1998, the Company issued a press release and sent a letter, revised proxy card, and addendum to the Company's proxy statement in opposition to the solicitation by Mentor and MGZ. A copy of the press release, letter, addendum to proxy statement, and revised proxy card are filed as Exhibits 61, 62, 63 and 64, respectively, hereto, and are incorporated herein by reference. ITEM 9. MATERIAL TO BE FILED AS EXHIBITS The response to Item 9 is hereby amended by the addition of the following new exhibit: Exhibit 61 Press Release of the Company dated December 24, 1998. Exhibit 62 Letter to the Company's Stockholders dated December 24, 1998. Exhibit 63 Addendum to Proxy Statement dated December 24, 1998. Exhibit 64 Revised Proxy Card. 2 SIGNATURE After reasonable inquiry and to the best of its knowledge and belief, the undersigned certifies that the information set forth in this statement is true, complete and correct. Dated: December 24, 1998 QUICKTURN DESIGN SYSTEMS, INC. /s/ Keith R. Lobo By: _________________________________ Keith R. Lobo President and Chief Executive Officer 3