Exhibit 10.07 CADENCE DESIGN SYSTEMS, INC. EMPLOYEE STOCK PURCHASE PLAN AS ADOPTED JANUARY 30, 1990 AS AMENDED MAY 7, 1992 AS AMENDED MAY 4, 1993 AS AMENDED MAY 17, 1994 AS AMENDED AUGUST 1, 1996 TO BECOME EFFECTIVE AUGUST 15, 1996 AS AMENDED MARCH, 1997 AS APPROVED BY STOCKHOLDERS , 1997 1. ESTABLISHMENT OF PLAN. Cadence Design Systems, Inc. (the "Company") proposes to grant options for purchase of the Company's Common Stock to eligible employees of the Company and Subsidiaries (as hereinafter defined) pursuant to this Employee Stock Purchase Plan (the "Plan"). For purposes of this Plan, "parent corporation" and "Subsidiary" (when used in the plural, "Subsidiaries") shall have the same meaning as "parent corporation" and "subsidiary corporation" in Sections 424(e) and 424(f), respectively, of the Internal Revenue Code of 1986, as amended (the "Code"). The Company intends that the Plan shall qualify as an "employee stock purchase plan" under Section 423 of the Code (including any amendments or replacements of such section), and the Plan shall be so construed. Any term not expressly defined in the Plan but defined for purposes of Section 423 of the Code shall have the same definition herein. Subject to adjustment as provided in Section 14 of the Plan, the aggregate number of shares of Common Stock which may be purchased under this Plan shall not exceed 8,750,000(1) shares of Common Stock of the Company (including the 2,000,000 shares reserved for issuance in March 1997), which may be treasury shares reacquired by the Company or authorized and unissued shares, or a combination of both. 2. PURPOSE. The purpose of the Plan is to provide employees of the Company and Subsidiaries designated by the Board of Directors as eligible to participate in the Plan with a convenient means to acquire an equity interest in the Company through payroll deductions, to enhance such employees' sense of participation in the affairs of the Company and Subsidiaries, and to provide an incentive for continued employment. 3. ADMINISTRATION. The Plan is administered by the Board of Directors of the Company or by a committee of one or more members of the Board of Directors of the Company designated by the Board of Directors of the Company (in which event all references herein to the Board of Directors shall be to the committee). Subject to the provisions of the Plan and the limitations of Section 423 or the Code or any successor provision in the Code, all questions of interpretation or application of the Plan shall be determined by the Board and its decisions shall be final and binding upon all participants. Members of the Board shall receive no compensation for their services in connection with the administration of the Plan, other than standard fees as established from time to time by the Board of Directors of the Company for services rendered by Board members serving on Board committees. All expenses incurred in connection with the administration of the Plan shall be paid by the Company. 4. ELIGIBILITY. Any employee of the Company or the designated Subsidiaries is eligible to participate in an Offering Period (as hereinafter defined) under the Plan except the following: a) employees who are not employed by the Company or Subsidiaries on the fifteenth (15th) day of the month before the beginning of such Offering Period; - ------------------------ (1) Adjusted to reflect the 3-2 stock splits which occurred in October 1995 and May 1996. 70 b) employees who are customarily employed for less than 20 hours per week; c) employees who are customarily employed for less than five months in a calendar year; and d) employees who, together with any other person whose stock would be attributed to such employee pursuant to Section 425(d) of the Code, own stock or hold options to purchase stock or who, as a result of being granted an option under the Plan with respect to such Offering Period, would own stock or hold options to purchase stock possessing 5 percent or more of the total combined voting power or value of all classes of stock of the Company or any of its Subsidiaries. 5. OFFERING DATES. The Board or the committee shall have the authority to determine the terms and conditions of each Offering Period in accordance with the terms of the Plan. The first day of each Offering Period is referred to as the "Offering Date." The last day of each Offering Period is hereinafter referred to as the "Purchase Date." An Offering Period shall begin on the first day of February of each calendar year and shall end on the last day of July of the same year. An Offering Period shall also begin on the first day of August of each calendar year and end on the last day of January of the calendar year immediately following. The Board of Directors or the committee shall have the power to change the duration of Offering Periods with respect to future offerings without stockholder approval if such change is announced to eligible employees at least fifteen (15) days prior to the scheduled beginning of the first Offering Period to be affected. 6. PARTICIPATION IN THE PLAN. Eligible employees may become participants in an Offering Period under the Plan on the first Offering Date after satisfying the eligibility requirements by delivering a subscription agreement authorizing payroll deductions to the Company or Subsidiary (whichever employs such employee) not later than the 15th day of the month before such Offering Date (unless a later time for filing the subscription agreement is set by the Board for all eligible Employees with respect to a given Offering Period). The form of subscription agreement and the person or department to which the subscription agreement must be submitted for processing shall be determined by the Company. An eligible employee who does not deliver a subscription agreement by such date after becoming eligible to participate in such Offering Period under the Plan shall not participate in that Offering Period or any subsequent Offering Period unless such employee enrolls in the Plan by filing the subscription agreement not later than the specified date preceding a subsequent Offering Date. Once an employee becomes a participant in an Offering Period, such employee will automatically participate in the Offering Period commencing immediately following the last day of the prior Offering Period unless the employee withdraws from the Plan or terminates further participation in the Offering Period as set forth in Section 11 below. Such participant is not required to file any additional subscription agreements in order to continue participation in the Plan. Any participant whose option expires and who has not withdrawn from the Plan pursuant to Section 11 below will automatically be re-enrolled in the Plan and granted a new option on the Offering Date of the next Offering Period. 7. GRANT OF OPTION ON ENROLLMENT. An eligible employee who enrolls in the Plan with respect to an Offering Period pursuant to Section 6 hereof, will receive a grant of an option (as of the Offering Date) to purchase on the Purchase Date up to that number of shares of Common Stock of the Company determined by dividing the amount accumulated in such employee's payroll deduction account during such Offering Period by a lower of (i) eighty-five percent (85%) of the fair market value of a share of the Company's Common Stock on the Offering Date (the "Entry Price") or (ii) eighty-five percent (85%) of the fair market value of a share of the Company's Common Stock on the Purchase Date; provided, however, that the number of shares of the Company's Common Stock subject to any option granted pursuant to this Plan shall not exceed the lesser of (a) the maximum number of shares set by the Board pursuant to Section 10(c) below with respect to the applicable Offering Period, or (b) 200% of the number of shares which could be purchased for the Entry Price with the payroll deductions authorized by a participant and actually withheld with respect to such Offering Period. Fair market value of a share of the Company's Common Stock shall be determined as provided in Section 8 hereof. 71 8. PURCHASE PRICE. The purchase price per share at which a share of Common Stock will be sold in Any Offering Period shall be 85% of the lesser of: a) the fair market value on the Offering Date; or b) the fair market value on the Purchase Date. For purposes of the Plan, the term "fair market value" shall mean the closing price in U.S. dollars of a share of the Company's Common Stock as reported on the New York Stock Exchange. However, if the Offering Date or Purchase Date falls on a non-business day then the fair market value of the Common Stock shall be the closing sales price on the immediately preceding business day. 9. PAYMENT OF PURCHASE PRICE; CHANGES IN PAYROLL DEDUCTIONS; ISSUANCE OF SHARES a) The funds with which participants may purchase shares shall be accumulated by regular payroll deductions made during each Offering Period. The deductions are made as a percentage of the employee's Compensation in one percent increments of not less than two percent (2%) nor greater than twelve percent (12%). Compensation shall be limited to base salary or wages, cash incentive compensation (including bonuses), and commissions, if any, paid; PROVIDED, HOWEVER, that for purposes of determining a participant's Compensation, any election by such participant to reduce his or her regular cash remuneration under Sections 125 or 401(k) of the Code shall be treated as if the participant did not make such election. The Board of Directors or the committee shall have the power to interpret and/or alter the definition of "Compensation" with respect to any or all future Offering Periods. Payroll deductions shall commence on the first payday following the Offering Date and shall continue to the end of the Offering Period unless sooner altered or terminated as provided in the Plan. b) A participant may lower (but not increase) the rate of payroll deductions during an Offering Period by filing a new authorization for payroll deductions, in which case the new rate shall become effective: for the next payroll period commencing more than 15 days after receipt of the authorization and shall continue for the remainder of the Offering Period unless changed as described below. Such change in the rate of payroll deductions may be made at any time during an Offering Period, but not more than one change may be made effective during any Offering Period. A participant may increase or lower the rate of payroll deductions for any subsequent Offering Period by filing a new authorization for payroll deductions not later than the 15th day of the month (or other date specified by the Board of Directors or the committee) before the beginning of such Offering Period. c) All payroll deductions made for a participant are credited to his or her account under the Plan and are deposited with the general funds of the Company; no interest accrues on the payroll deductions. All payroll deductions received or held by the Company may be used by the Company for any corporate purpose, and the Company shall not be obligated to segregate such payroll deductions. d) On each Purchase Date, so long as the Plan remains in effect and the participant remains eligible to participate in the Plan, and provided that the participant has not submitted a signed and completed withdrawal form before that date which notifies the Company that the participant wishes to withdraw from that Offering Period under the Plan and have all payroll deductions accumulated in the account maintained on behalf of the participant as of that date returned to the participant, the Company shall apply the funds then in the participant's account to the purchase of whole shares of Common Stock reserved under the option granted to such participant with respect to the Offering Period to the extent that such option is exercisable on the Purchase Date. The purchase price per share shall be as specified in Section 8 of the Plan. Any cash remaining in a participant's account after such purchase of shares by reason of any limitation on the number of shares that may be purchased under the Plan as set forth in Section 10 hereof 72 which is sufficient to purchase a whole share of the Company's Common Stock, shall be refunded to such participant in cash; PROVIDED, HOWEVER, that any amount remaining in such participant's account on a Purchase Date which is less than the amount necessary to purchase a full share of Common Stock of the Company shall be carried forward, without interest, into the next Offering Period. In the event that the Plan has been oversubscribed, all funds not used to purchase shares on the Purchase Date shall be returned to the participant. No Common Stock shall be purchased on a Purchase Date on behalf of any employee whose participation in the Plan has terminated prior to such Purchase Date. e) As promptly as practicable after the Purchase Date, the Company shall arrange the delivery to each participant, as appropriate, of a certificate representing the shares purchased upon exercise of his or her option. f) During a participant's lifetime, such participant's option to purchase shares hereunder is exercisable only by him or her. In the event of the participant's death, the rights of such participant's heirs or beneficiaries shall be determined under Section 12 of the Plan. The participant will have no interest or voting right in shares covered by his or her option until such option has been exercised. Shares to be delivered to a participant under the Plan will be registered in the name of the participant or in the name of the participant and his or her spouse. 10. LIMITATIONS ON SHARES TO BE PURCHASED. a) No employee shall be entitled to purchase stock under the Plan at a rate which, when aggregated with his or her rights to purchase stock under all other employee stock purchase plans of the Company or any Subsidiary which are intended to satisfy the requirements of Section 423 of the Code, exceeds $25,000 in fair market value, determined as of the Offering Date (or such other limit as may be imposed by the Code) for each calendar year in which the employee participates in the Plan. b) No more than 200% of the number of shares which could be purchased for the Entry Price with the payroll deductions authorized by a participant and actually withheld with respect to a given single Offering Period may be purchased by the participant at the end of such Offering Period. c) No employee shall be entitled to purchase more than the Maximum Share Amount (as defined below) on any single Purchase Date. Not less than thirty days prior to the commencement of any Offering Period, the Board may, in its sole discretion, set a maximum number of shares which may be purchased by any employee at any single Purchase Date (hereinafter the "Maximum Share Amount"). In no event shall the Maximum Share Amount exceed the amounts permitted under Section 10(b) above. If a new Maximum Share Amount is set, then all participants must be notified of such Maximum Share Amount not less than fifteen days prior to the commencement of the next Offering Period. Once the Maximum Share Amount is set, it shall continue to apply in respect of all succeeding Purchase Dates and Offering Periods unless revised by the Board as set forth above. d) If the number of shares to be purchased on a Purchase Date by all employees participating in the Plan exceeds the number of shares then available for issuance under the Plan, the Company will make a pro rata allocation of the remaining shares in as uniform a manner as shall be practicable and as the Board shall determine to be equitable. In such event, the Company shall give written notice of such reduction of the number of shares to be purchased under a participant's option to each employee affected thereby. e) Any payroll deductions accumulated in a participant's account which are not used to purchase stock due to the limitations in this Section 10 shall be returned to the participant as soon as practicable after the end of the Offering Period. 73 11. WITHDRAWAL. (a) Each participant may withdraw from an Offering Period under the Plan by signing and delivering notice on a form provided by the Company for such purpose. Such withdrawal may be elected at any time prior to the 15th day of the month in which an Offering Period ends (or other date specified by the Board or committee). (b) Upon withdrawal from the Plan, the accumulated payroll deductions shall be returned to the withdrawn employee and his or her interest in the Plan shall terminate. In the event an employee voluntarily elects to withdraw from the Plan, he or she may not resume his or her participation in the Plan during the same Offering Period, but he or she may participate in any Offering Period under the Plan which commences on a date subsequent to such withdrawal by filing a new authorization for payroll deductions in the same manner as set forth above for initial participation in the Plan. 12. TERMINATION OF EMPLOYMENT. Termination of a participant's employment for any reason, including retirement or death or the failure of a participant to remain an eligible employee, terminates his or her participation in the Plan immediately. In such event, the payroll deductions credited to the participant's account will be returned to him or her or, in the case of his or her death, to his or her legal representative (including a beneficiary designated as permitted under Section 22). For this purpose, an employee will not be deemed to have terminated employment or failed to remain in the continuous employ of the Company in the case of sick leave, military leave, or any other leave of absence approved by the Board of Directors of the Company; provided that such leave is for a period of not more than ninety (90) days or reemployment upon the expiration of such leave is guaranteed by contract or statute. 13. RETURN OF PAYROLL DEDUCTIONS. In the event an employee's interest in the Plan is terminated by withdrawal, termination of employment or otherwise, or in the event the Plan is terminated by the Board, the Company shall promptly deliver to the employee all payroll deductions credited to his account. No interest shall accrue on the payroll deductions of a participant in the Plan. 14. CAPITAL CHANGES. Subject to any required action by the stockholders of the Company, the number of shares of Common Stock covered by each option under the Plan which has not yet been exercised and the number of shares of Common Stock which have been authorized for issuance under the Plan but have not yet been placed under option (collectively, the "Reserves"), as well as the price per share of Common Stock covered by each option under the Plan which has not yet been exercised, shall be proportionately adjusted for any increase or decrease in the number of issued shares of Common Stock resulting from a stock split or the payment of stock dividend (but only on the Common Stock) or any other increase or decrease in the number of shares of Common Stock effected without receipt of consideration by the Company; PROVIDED, HOWEVER, that conversion of any convertible securities of the Company shall not be deemed to have been "effected without receipt of consideration." Such adjustment shall be made by the Board, whose determination in that respect shall be final, binding and conclusive. Except as expressly provided herein, no issue by the Company of shares of stock of any class, or securities convertible into shares of stock of any class, shall affect, and no adjustment by reason thereof shall be made with respect to, the number or price of shares of Common Stock subject to an option. In the event of the proposed dissolution or liquidation of the Company, the Offering Period will terminate immediately prior to the consummation of such proposed action, unless otherwise provided by the Board. The Board may, in the exercise of its sole discretion in such instances, declare that the options under the Plan shall terminate as of a date fixed by the Board and give each participant the right to exercise his or her option as to all of the optioned stock, including shares which would not otherwise be exercisable. In the event of a proposed sale of all or substantially all of the assets of the Company, or the merger of the Company with or into another corporation or a parent or subsidiary of such successor corporation, the Offering Period will terminate immediately prior to the consummation of such proposed action, unless otherwise provided by the Board. The Board may, in the exercise of its sole discretion in 74 such instances, and in lieu of assumption or substitution of the option, provide that each participant shall have the right to exercise the option as to all of the optioned stock. If the Board makes an option exercisable in lieu of assumption or substitution in the event of a merger or sale of assets, the Board shall notify the participant that the option shall be fully exercisable for a period of twenty (20) days from the date of such notice (or such other period of time as the Board shall determine), and the option will terminate upon the expiration of such period. The Board may, if it so determines in the exercise of its sole discretion, also make provision for adjusting the Reserves, as well as the price per share of Common Stock covered by each outstanding option, in the event that the Company effects one or more reorganizations, recapitalizations, rights offering, or other increases or reductions of shares of its outstanding Common Stock, and in the event of the Company being consolidated with or merged into any other corporation. 15. NONASSIGNABILITY. Neither payroll deductions credited to a participant's account nor any rights with regard to the exercise of an option or to receive shares under the Plan may be assigned, transferred, pledged or otherwise disposed of in any way (other than by will, the laws of descent and distribution or as provided in Section 22 hereof) by the participant. Any such attempt at assignment, transfer, pledge or other disposition shall be without effect. 16. REPORTS. Individual accounts will be maintained for each participant in the Plan. Each participant shall receive promptly after the end of each Offering Period a report of his account setting forth the total payroll deductions accumulated, the number of shares purchased, the per share price thereof and the remaining cash balance, if any, carried forward to the next Offering Period or returned to the participant. 17. NOTICE OF DISPOSITION. Each participant shall notify the Company if the participant disposes of any of the shares purchased in any Offering Period pursuant to this Plan if such disposition occurs within two years from the Offering Date or within twelve months from the Purchase Date on which such shares were purchased (the "Notice Period"). Unless such participant is disposing of any of such shares during the Notice Period, such participant shall keep the certificates representing such shares in his or her name (and not in the name of a nominee) during the Notice Period. The Company may, at any time during the Notice Period, place a legend or legends on any certificate representing shares acquired pursuant to the Plan requesting the Company's transfer agent to notify the Company of any transfer of the shares. The obligation of the participant to provide such notice shall continue notwithstanding the placement of such legend on certificates. 18. NO RIGHTS TO CONTINUED EMPLOYMENT. Neither this Plan nor the grant of any option hereunder shall confer any right on any employee to remain in the employ of the Company or any Subsidiary or restrict the right of the Company or any Subsidiary to terminate such employee's employment. 19. EQUAL RIGHTS AND PRIVILEGES. All eligible employees shall have equal rights and privileges with respect to the Plan so that the Plan qualifies as an "employee stock purchase plan" within the meaning of Section 423 or any successor provision of the Code and the related regulations. Any provision of the Plan which is inconsistent with Section 423 or any successor provision of the Code shall without further act or amendment by the Company or the Board be reformed to comply with the requirements of Section 423. This Section 19 shall take precedence over all other provisions in the Plan. 20. NOTICES. All notices or other communications by a participant to the Company under or in connection with the Plan shall be deemed to have been duly given when received in the form specified by the Company at the location, or by the person, designated by the Company for the receipt thereof. 21. STOCKHOLDER APPROVAL OF AMENDMENTS. Any required approval of the stockholders of the Company shall be solicited substantially in accordance with Section 14(a) of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), and the rules and regulations promulgated thereunder. Such approval of an amendment shall be solicited at or prior to the first annual meeting of stockholders held subsequent to the grant to an officer or director of the Company of an option under the Plan as then 75 amended. If such stockholder approval is obtained at a duly held stockholders' meeting, it must be obtained by the affirmative vote of the holders of a majority of the outstanding shares of the Company, or if such stockholder approval is obtained by written consent, it must be obtained by a majority of the outstanding shares of the Company; PROVIDED, HOWEVER, that approval at a meeting or by written consent may be obtained by a lesser degree of stockholder approval if the Board determines, in its discretion after consultation with the Company's legal counsel, that such lesser degree of stockholder approval will comply with all applicable laws and will not adversely affect the qualification of the Plan under Section 423 of the Code or Rule 16b-3 promulgated under the Exchange Act ("Rule 16b-3"). 22. DESIGNATION OF BENEFICIARY. a) A participant may file a written designation of a beneficiary who is to receive any shares and cash, if any, from the participant's account under the Plan in the event of such participant's death subsequent to the end of an Offering Period but prior to delivery to him of such shares and cash. In addition, a participant may file a written designation of a beneficiary who is to receive any cash from the participant's account under the Plan in the event of such participant's death prior to a Purchase Date. b) Such designation of beneficiary may be changed by the participant at any time by written notice. In the event of the death of a participant and in the absence of a beneficiary validly designated under the Plan who is living at the time of such participant's death, the Company shall deliver such shares or cash to the executor or administrator of the estate of the participant, or if no such executor or administrator has been appointed (to the knowledge of the Company), the Company, in its discretion, may deliver such shares or cash to the spouse or to any one or more dependents or relatives of the participant, or if no spouse, dependent or relative is known to the Company, then to such other person as the Company may designate. 23. CONDITIONS UPON ISSUANCE OF SHARES; LIMITATIONS ON SALE OF SHARES. Shares shall not be issued with respect to an option unless the exercise of such option and the issuance and delivery of such shares pursuant thereto shall comply with all applicable provisions of law, domestic or foreign, including, without limitation, the Securities Act of 1933, as amended, the Exchange Act, the rules and regulations promulgated thereunder, and the requirements of any stock exchange upon which the shares may then be listed, and shall be further subject to the approval of counsel for the Company with respect to, such compliance. 24. APPLICABLE LAW. The Plan shall be governed by the substantive laws (excluding the conflict of laws rules) of the State of Delaware. 25. AMENDMENT OR TERMINATION OF THE PLAN. This Plan shall be effective July 1, 1990, and shall continue until the earlier to occur of termination by the Board or issuance of all of the shares of Common Stock reserved for issuance under the Plan. The Board of Directors of the Company may at any time amend or terminate the Plan, except that any such termination cannot affect options previously granted under the Plan, nor may any amendment make any change in an option previously granted which would adversely affect the right of any participant, nor may any amendment be made without approval of the stockholders of the Company obtained in accordance with Section 21 hereof within 12 months of the adoption of such amendment (or earlier if required by Section 21) if such amendment would constitute an amendment for which stockholder approval is required in order to comply with Rule 16b-3 (or any successor rule) of the Exchange Act or Nasdaq or any securities exchange listing requirements. 76