Exhibit 4.5 FIRST AMENDMENT TO RIGHTS AGREEMENT THIS FIRST AMENDMENT TO RIGHTS AGREEMENT (this "Amendment") is entered into as of December 3, 2001 by and between HARRIS TRUST COMPANY OF CALIFORNIA (hereinafter referred to as the "Rights Agent"), and...Rights Agreement • April 1st, 2002 • Avant Corp • Services-prepackaged software • Delaware
EXHIBIT 10.33 [AVANT! LETTERHEAD] Viraj Patel 5080 Canyon Crest Drive San Ramon, CA 94583 September 20, 2001 This letter is being delivered to you by Avant! Corporation (the "Company") to encourage you to continue your employment with the Company. The...Avant Corp • April 1st, 2002 • Services-prepackaged software
EXHIBIT 10.24 STOCK PURCHASE AGREEMENTStock Purchase Agreement • April 1st, 2002 • Avant Corp • Services-prepackaged software • California
FORM OFEmployment Agreement • April 1st, 2002 • Avant Corp • Services-prepackaged software
EXHIBIT 10.27 SEPARATION AGREEMENT GENERAL RELEASE AND WAIVER SEPARATION AGREEMENT and GENERAL RELEASE and WAIVER (this "Agreement") made as of December 3, 2001 (the "Execution Date"), by and between John Howard Hsu (the "Employee") and Avant!...Separation Agreement General Release and Waiver • April 1st, 2002 • Avant Corp • Services-prepackaged software • Delaware
RECITALSWaiver and Indemnification Agreement • April 1st, 2002 • Avant Corp • Services-prepackaged software • California
EXHIBIT 10.35 GENERAL RELEASE AND SETTLEMENT AGREEMENT WHEREAS the employment relationship between Stephen Wuu ("Employee") and Avant! Corporation ("Employer") is to terminate on July 25, 2001 because of Employee's resignation; WHEREAS the Employee...Release and Settlement Agreement • April 1st, 2002 • Avant Corp • Services-prepackaged software • California
December 3, 2001Avant Corp • April 1st, 2002 • Services-prepackaged software
This letter agreement is being entered into as of December 31, 2001, in connection with the execution of the Agreement and Plan of Merger, dated as of December 3, 2001 (the "Agreement"), by and among Synopsys, Inc., a Delaware corporation ("Parent"), Maple Forest Acquisition L.L.C., a Delaware limited liability company and a direct wholly-owned subsidiary of Parent ("Merger Sub"), and Avant! Corporation, a Delaware corporation ("the Company"), and is subject to the terms and conditions set forth in the Agreement. Capitalized terms, which are used but not defined herein, shall have the meanings ascribed to such terms in the Agreement.
