Exhibit 4.12

KILROY REALTY

2006 INCENTIVE AWARD PLAN

ARTICLE 1.

PURPOSE

The purpose of the Kilroy Realty 2006 Incentive Award Plan (the “ Plan ”) is to promote the success and enhance the value of Kilroy Realty Corporation (the “ Company ”), Kilroy Realty, L.P. (the “ Partnership ”), and Kilroy Realty TRS, Inc. (the “ TRS ”) by linking the personal interests of the members of the Board, Employees, and Consultants to those of Company stockholders and by providing such individuals with an incentive for outstanding performance to generate superior returns to Company stockholders. The Plan is further intended to provide flexibility to the Company, the TRS, the Partnership and their subsidiaries in their ability to motivate, attract, and retain the services of members of the Board, Employees, and Consultants upon whose judgment, interest, and special effort the successful conduct of the Company’s, the TRS’s and the Partnership’s operation is largely dependent.

ARTICLE 2.

DEFINITIONS AND CONSTRUCTION

Wherever the following terms are used in the Plan they shall have the meanings specified below, unless the context clearly indicates otherwise. The singular pronoun shall include the plural where the context so indicates.

2.1 “ Award ” means an Option, a Restricted Stock award, a Stock Appreciation Right award, a Performance Share award, a Performance Stock Unit award, a Dividend Equivalents award, a Stock Payment award, a Deferred Stock award, a Restricted Stock Unit award, a Profits Interest Unit award, an Other Incentive Award, a Performance Bonus Award, or a Performance-Based Award granted to a Participant pursuant to the Plan.

2.2 “ Award Agreement ” means any written agreement, contract, or other instrument or document evidencing an Award, including through electronic medium.

2.3 “ Board ” means the Board of Directors of the Company.

2.4 “ Change in Control ” means and includes each of the following:

(a) A transaction or series of transactions (other than an offering of Stock to the general public through a registration statement filed with the Securities and Exchange Commission) whereby any “person” or related “group” of “persons” (as such terms are used in Sections 13(d) and 14(d)(2) of the Exchange Act) (other than the Company, any of its subsidiaries, an employee benefit plan maintained by the Company or any of its subsidiaries or a “person” that, prior to such transaction, directly or indirectly controls, is controlled by, or is under common control with, the Company) directly or indirectly acquires beneficial ownership (within the meaning of Rule 13d-3 under the Exchange Act) of securities of the Company and immediately after such acquisition possesses more than 50% of the total combined voting power of the Company’s securities outstanding immediately after such acquisition; or

(b) During any period of two consecutive years, individuals who, at the beginning of such period, constitute the Board together with any new director(s) (other than a director designated by a person who shall have entered into an agreement with the Company to effect a transaction described in Section 2.4(a) hereof or Section 2.4(c) hereof) whose election by the Board or nomination for election by the Company’s stockholders was approved by a vote of at least two-thirds of the directors then still in office who either

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were directors at the beginning of the two-year period or whose election or nomination for election was previously so approved, cease for any reason to constitute a majority thereof; or

(c) The consummation by the Company (whether directly involving the Company or indirectly involving the Company through one or more intermediaries) of (x) a merger, consolidation, reorganization, or business combination or (y) a sale or other disposition of all or substantially all of the Company’s assets in any single transaction or series of related transactions or (z) the acquisition of assets or stock of another entity, in each case other than a transaction:

(i) Which results in the Company’s voting securities outstanding immediately before the transaction continuing to represent (either by remaining outstanding or by being converted into voting securities of the Company or the person that, as a result of the transaction, controls, directly or indirectly, the Company or owns, directly or indirectly, all or substantially all of the Company’s assets or otherwise succeeds to the business of the Company (the Company or such person, the “ Successor Entity ”)) directly or indirectly, at least a majority of the combined voting power of the Successor Entity’s outstanding voting securities immediately after the transaction, and

(ii) After which no person or group beneficially owns voting securities representing 50% or more of the combined voting power of the Successor Entity; provided, however, that no person or group shall be treated for purposes of this Section 2.4(c)(ii) as beneficially owning 50% or more of combined voting power of the Successor Entity solely as a result of the voting power held in the Company prior to the consummation of the transaction; or

(d) The Company’s stockholders approve a liquidation or dissolution of the Company and all material contingencies to such liquidation or dissolution have been satisfied or waived.

2.5 “ Code ” means the Internal Revenue Code of 1986, as amended.

2.6 “ Committee ” means the committee of the Board described in Article 12 hereof.

2.7 “ Company ” means Kilroy Realty Corporation, a Maryland corporation.

2.8 “ Company Consultant ” means any consultant or adviser if:

(a) The consultant or adviser renders bona fide services to the Company or Company Subsidiary;

(b) The services rendered by the consultant or adviser are not in connection with the offer or sale of securities in a capital-raising transaction and do not directly or indirectly promote or maintain a market for the Company’s securities; and

(c) The consultant or adviser is a natural person who has contracted directly with the Company or Company Subsidiary to render such services.

2.9 “ Company Employee ” means any officer or other employee (as defined in accordance with Section 3401(c) of the Code) of the Company or of any Company Subsidiary.

2.10 “ Company Subsidiary ” means (i) a corporation, association or other business entity of which 50% or more of the total combined voting power of all classes of capital stock is owned, directly or indirectly, by the Company or by one or more Company Subsidiaries or by the Company and one or more Company Subsidiaries, (ii) any partnership or limited liability company of which 50% or more of the capital and profits interests is owned, directly or indirectly, by the Company or by one or more Company Subsidiaries or by the Company and one or more Company Subsidiaries, and (iii) any other entity not described in clauses (i) or (ii) above of which 50% or more of the ownership and the power, pursuant to a written contract or agreement, to direct the policies and management or the financial and the other affairs thereof, are owned or controlled by the Company or by one or more other Company Subsidiaries or by the Company and one or more Company Subsidiaries; provided,

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however , that “Company Subsidiary” shall not include the TRS, any TRS Subsidiary, the Partnership or any Partnership Subsidiary.

2.11 “ Consultant ” means any Company Consultant, TRS Consultant or Partnership Consultant.

2.12 “ Covered Employee ” means a Company Employee who is, or could be, a “covered employee” within the meaning of Section 162(m) of the Code.

2.13 “ Deferred Stock ” means a right to receive a specified number of shares of Stock during specified time periods pursuant to Section 8.5 hereof.

2.14 “ Disability ” means that the Participant qualifies to receive long-term disability payments under the Company’s or the Partnership’s long-term disability insurance program, as it may be amended from time to time.

2.15 “ Dividend Equivalents ” means a right granted to a Participant pursuant to Section 8.3 hereof to receive the equivalent value (in cash or Stock) of dividends paid on Stock.

2.16 “ Effective Date ” shall have the meaning set forth in Section 13.1 hereof.

2.17 “ Eligible Individual ” means any person who is an Employee, a Consultant, a member of the Board or a TRS Director, as determined by the Committee.

2.18 “ Employee ” means any Company Employee, TRS Employee or Partnership Employee.

2.19 “ Exchange Act ” means the Securities Exchange Act of 1934, as amended.

2.20 “ Fair Market Value ” means, as of any given date, (a) if Stock is traded on an exchange, the closing price of a share of Stock as reported in the Wall Street Journal for the first trading date immediately prior to such date during which a sale occurred, or, (b) such other determination of the fair market value of a share of Stock as established from time to time by the Committee acting in good faith.

2.21 “ Incentive Stock Option ” means an Option that is intended to meet the requirements of Section 422 of the Code or any successor provision thereto.

2.22 “ Independent Director ” means a member of the Board who is not an Employee of the Company.

2.23 “ Non-Employee Director ” means a member of the Board who qualifies as a “Non-Employee Director” as defined in Rule 16b-3(b)(3) under the Exchange Act, or any successor rule.

2.24 “ Non-Qualified Stock Option ” means an Option that is not intended to be an Incentive Stock Option.

2.25 “ Option ” means a right granted to a Participant pursuant to Article 5 hereof to purchase a specified number of shares of Stock at a specified price during specified time periods. An Option may be either an Incentive Stock Option or a Non-Qualified Stock Option.

2.26 “ Other Incentive Award ” means an Award granted pursuant to Section 8.8 of the Plan.

2.27 “ Participant ” means any Eligible Individual who, as a member of the Board, Consultant, Employee, or TRS Director, has been granted an Award pursuant to the Plan.

2.28 “ Partnership ” means Kilroy Realty, L.P., a Delaware limited partnership.

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2.29 “ Partnership Agreement ” means the Fifth Amended and Restated Agreement of Limited Partnership of Kilroy Realty, L.P., as the same may be amended, modified or restated from time to time.

2.30 “ Partnership Consultant ” means any consultant or advisor if:

(a) The consultant or adviser renders bona fide services to the Partnership or Partnership Subsidiary;

(b) The services rendered by the consultant or adviser are not in connection with the offer or sale of securities in a capital-raising transaction and do not directly or indirectly promote or maintain a market for the Partnership’s securities; and

(c) The consultant or adviser is a natural person who has contracted directly with the Partnership or Partnership Subsidiary to render such services.

2.31 “ Partnership Employee ” means any employee (as defined in accordance with Section 3401(c) of the Code) of the Partnership or any entity which is then a Partnership Subsidiary.

2.32 “ Partnership Participant Purchased Shares ” has the meaning set forth in Section 5.4.

2.33 “ Partnership Purchase Price ” has the meaning set forth in Section 5.4.

2.34 “ Partnership Purchased Shares ” has the meaning set forth in Section 5.4.

2.35 “ Partnership Subsidiary ” means (i) a corporation, association or other business entity of which 50% or more of the total combined voting power of all classes of capital stock is owned, directly or indirectly, by the Partnership or by one or more Partnership Subsidiaries or by the Partnership and one or more Partnership Subsidiaries, (ii) any partnership or limited liability company of which 50% or more of the capital and profits interests is owned, directly or indirectly, by the Partnership or by one or more Partnership Subsidiaries or by the Partnership and one or more Partnership Subsidiaries, and (iii) any other entity not described in clauses (i) or (ii) above of which 50% or more of the ownership and the power, pursuant to a written contract or agreement, to direct the policies and management or the financial and the other affairs thereof, are owned or controlled by the Partnership or by one or more other Partnership Subsidiaries or by the Partnership and one or more Partnership Subsidiaries; provided, however, that “Partnership Subsidiary” shall not include the TRS or any TRS Subsidiary.

2.36 “ Performance-Based Award ” means an Award, other than an Option or SAR, granted to selected Covered Employees, which the Committee determines shall be subject to the terms and conditions set forth in Article 9 hereof. All Performance-Based Awards are intended to qualify as Qualified Performance-Based Compensation.

2.37 “ Performance Bonus Award ” has the meaning set forth in Section 8.9 hereof.

2.38 “ Performance Criteria ” means the criteria that the Committee selects for purposes of establishing the Performance Goal or Performance Goals for a Participant for a Performance Period. The Performance Criteria that will be used to establish Performance Goals are limited to the following: net earnings (either before or after interest, taxes, depreciation and amortization), economic value-added, sales or revenue, net income (either before or after taxes), operating earnings, cash flow (including, but not limited to, operating cash flow and free cash flow), cash flow return on capital, return on net assets, return on stockholders’ equity, return on assets, return on capital, stockholder returns, return on sales, gross or net profit margin, productivity, expense, margins, operating efficiency, tenant satisfaction, working capital, earnings per share, price per share of Stock, and market share, any of which may be measured either in absolute terms, by comparison to comparable performance in an earlier period or periods, or as compared to results of a peer group, industry index, or other company or companies. The Committee shall define in an objective fashion the manner of calculating the Performance Criteria it selects to use for such Performance Period for such Participant. The Committee may use other performance criteria as a basis for exercising negative discretion or in connection with an Award other than a Performance-Based Award.

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2.39 “ Performance Goals ” means, for a Performance Period, the goals established in writing by the Committee for the Performance Period based upon the Performance Criteria. Depending on the Performance Criteria used to establish such Performance Goals, the Performance Goals may be expressed in terms of overall performance of the Company, the TRS, the Partnership, any Subsidiary, or the performance of a division, business unit, or an individual. The Committee, in its discretion, may, within the time prescribed by Section 162(m) of the Code, adjust or modify the calculation of Performance Goals for such Performance Period in order to prevent the dilution or enlargement of the rights of Participants (a) in the event of, or in anticipation of, any unusual or extraordinary corporate item, transaction, event, or development, or (b) in recognition of, or in anticipation of, any other unusual or nonrecurring events affecting the Company, the TRS, the Partnership or any Subsidiary, or the financial statements of the Company, the TRS, the Partnership or any Subsidiary, or in response to, or in anticipation of, changes in applicable laws, regulations, accounting principles, or business conditions.

2.40 “ Performance Period ” means the one or more periods of time, which may be of varying and overlapping durations, as the Committee may select, over which the attainment of one or more Performance Goals will be measured for the purpose of determining a Participant’s right to, and the payment of, a Performance-Based Award.

2.41 “ Performance Share ” means a right granted to a Participant pursuant to Section 8.1 hereof, to receive Stock, the payment of which is contingent upon achieving certain Performance Goals or other performance-based targets established by the Committee.

2.42 “ Performance Stock Unit ” means a right granted to a Participant pursuant to Section 8.2 hereof, to receive Stock, the payment of which is contingent upon achieving certain Performance Goals or other performance-based targets established by the Committee.

2.43 “ Plan ” means this Kilroy Realty 2006 Incentive Award Plan, as it may be amended from time to time.

2.44 “ Profits Interest Unit ” means to the extent authorized by the Partnership Agreement, a unit of the Partnership that is intended to constitute a “profits interest” within the meaning of the Code, Treasury Regulations promulgated thereunder, and any published guidance by the Internal Revenue Service with respect thereto.

2.45 “ Qualified Performance-Based Compensation ” means any compensation that is intended to qualify as “qualified performance-based compensation” as described in Section 162(m)(4)(C) of the Code.

2.46 “ REIT ” means a real estate investment trust within the meaning of Sections 856 through 860 of the Code.

2.47 “ Restricted Stock ” means Stock awarded to a Participant pursuant to Article 6 hereof that is subject to certain restrictions and may be subject to risk of forfeiture.

2.48 “ Restricted Stock Unit ” means an Award granted pursuant to Section 8.6 hereof.

2.49 “ Securities Act ” shall mean the Securities Act of 1933, as amended.

2.50 “ Stock ” means the common stock of the Company, par value $.01 per share, and such other securities of the Company that may be substituted for Stock pursuant to Article 11 hereof.

2.51 “ Stock Appreciation Right ” or “ SAR ” means a right granted pursuant to Article 7 hereof to receive a payment equal to the excess of the Fair Market Value of a specified number of shares of Stock on the date the SAR is exercised over the Fair Market Value on the date the SAR was granted as set forth in the applicable Award Agreement.

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2.52 “ Stock Payment ” means (a) a payment in the form of shares of Stock, or (b) an option or other right to purchase shares of Stock, as part of any bonus, deferred compensation or other arrangement, made in lieu of all or any portion of the compensation, granted pursuant to Section 8.4 hereof.

2.53 “ Subsidiary ” means any Company Subsidiary, TRS Subsidiary or Partnership Subsidiary.

2.54 “ TRS ” means Kilroy Realty TRS, Inc., a Delaware corporation.

2.55 “ TRS Consultant ” means any consultant or advisor if:

(a) The consultant or adviser renders bona fide services to the TRS or TRS Subsidiary;

(b) The services rendered by the consultant or adviser are not in connection with the offer or sale of securities in a capital-raising transaction and do not directly or indirectly promote or maintain a market for the Company’s securities; and

(c) The consultant or adviser is a natural person who has contracted directly with the TRS or TRS Subsidiary to render such services.

2.56 “ TRS Director ” means a member of the Board of Directors of the TRS.

2.57 “ TRS Employee ” means any officer or other employee (as defined in accordance with Section 3401(c) of the Code) of the TRS or of any corporation, partnership or limited liability company which is then a TRS Subsidiary.

2.58 “ TRS Participant Purchased Shares ” has the meaning set forth in Section 5.5.

2.59 “ TRS Purchase Price ” has the meaning set forth in Section 5.5.

2.60 “ TRS Purchased Shares ” has the meaning set forth in Section 5.5.

2.61 “ TRS Subsidiary ” means (i) a corporation, association or other business entity of which 50% or more of the total combined voting power of all classes of capital stock is owned, directly or indirectly, by the TRS or by one or more TRS Subsidiaries or by the TRS and one or more TRS Subsidiaries, (ii) any partnership or limited liability company of which 50% or more of the capital and profits interests is owned, directly or indirectly, by the TRS or by one or more TRS Subsidiaries or by the TRS and one or more TRS Subsidiaries, and (iii) any other entity not described in clauses (i) or (ii) above of which 50% or more of the ownership and the power, pursuant to a written contract or agreement, to direct the policies and management or the financial and the other affairs thereof, are owned or controlled by the TRS or by one or more other TRS Subsidiaries or by the TRS and one or more TRS Subsidiaries.

ARTICLE 3.

SHARES SUBJECT TO THE PLAN

3.1 Number of Shares .

(a) Subject to Article 11 hereof and Section 3.1(b) hereof, the aggregate number of shares of Stock which may be issued or transferred pursuant to Awards under the Plan is 1,535,000.

(b) To the extent that an Award terminates, expires, lapses for any reason, or is settled in cash, any shares of Stock subject to the Award shall again be available for the grant of an Award pursuant to the Plan. Additionally, any shares of Stock tendered or withheld to satisfy the grant or exercise price or tax withholding obligation with respect to any Award shall not be counted as issued or transferred to the

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Participant under the Plan and shall again be available for the grant of an Award pursuant to the Plan. To the extent permitted by applicable law or any exchange rule, shares of Stock issued in assumption of, or in substitution for, any outstanding awards of any entity acquired in any form of combination by the Company or any Subsidiary shall not be counted against shares of Stock available for grant pursuant to this Plan. Each Profits Interest Unit issued pursuant to an Award shall count as one share of Stock for purposes of calculating the aggregate number of shares of Stock available for issuance under the Plan as set forth in Section 3.1(a) and for purposes of calculating the share limitation set forth in Section 3.3. To the extent that a SAR is exercised for Stock, only the number of shares actually issued or transferred upon such exercise will be counted for purposes of calculating the aggregate number of shares of Stock available for issuance under the Plan as set forth in Section 3.1(a). The payment of Dividend Equivalents in cash in conjunction with any outstanding Awards, shall not be counted against the shares available for issuance or transfer under the Plan. Notwithstanding the provisions of this Section 3.1(b), no shares of Stock may again be optioned, granted or awarded if such action would cause an Incentive Stock Option to fail to qualify as an incentive stock option under Section 422 of the Code.

3.2 Stock Distributed .    Any Stock distributed pursuant to an Award may consist, in whole or in part, of authorized and unissued Stock, treasury Stock or Stock purchased on the open market.

3.3 Limitation on Number of Shares Subject to Awards .    Notwithstanding any provision in the Plan to the contrary, and subject to Article 11 hereof, the maximum number of shares of Stock with respect to one or more Awards that may be granted to any one Participant during any calendar year shall be 500,000 and, with respect to one or more Awards to any one Participant which are not denominated in Stock or otherwise for which the foregoing limitation would not be an effective limitation, the maximum amount that may be paid in cash during any calendar year shall be $10,000,000.

ARTICLE 4.

ELIGIBILITY AND PARTICIPATION

4.1 Eligibility .    Each Eligible Individual shall be eligible to be granted one or more Awards pursuant to the Plan.

4.2 Participation .    Subject to the provisions of the Plan, the Committee may, from time to time, select from among all Eligible Individuals, those to whom Awards shall be granted and shall determine the nature and amount of each Award. No Eligible Individual shall have any right to be granted an Award pursuant to this Plan.

4.3 Foreign Participants .    Notwithstanding any provision of the Plan to the contrary, in order to comply with the laws in other countries in which the Company, the Partnership, the TRS, or any Subsidiary operates or has Eligible Individuals, the Committee, in its sole discretion, shall have the power and authority to: (i) determine which Subsidiaries shall be covered by the Plan; (ii) determine which Eligible Individuals outside the United States are eligible to participate in the Plan; (iii) modify the terms and conditions of any Award granted to Eligible Individuals outside the United States to comply with applicable foreign laws and customs and meet the objectives of the Plan; (iv) establish subplans and modify exercise procedures and other terms and procedures, to the extent such actions may be necessary or advisable (any such subplans and/or modifications shall be attached to this Plan as appendices); provided, however , that no such subplans and/or modifications shall increase the share limitations contained in Sections 3.1 and 3.3 hereof; and (v) take any action, before or after an Award is made, that it deems advisable to obtain approval or comply with any necessary local governmental regulatory exemptions or approvals or local customs.

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ARTICLE 5.

STOCK OPTIONS

5.1 General .    The Committee is authorized to grant Options to Participants on the following terms and conditions:

(a) Exercise Price .    The exercise price per share of Stock subject to an Option shall be determined by the Committee and set forth in the Award Agreement; provided , that, subject to Section 5.2(b) hereof, the per share exercise price for any Option shall not be less than 100% of the Fair Market Value of a share of Stock on the date of grant.

(b) Time and Conditions of Exercise .    The Committee shall determine the time or times at which an Option may be exercised in whole or in part; provided that the term of any Option granted under the Plan shall not exceed ten years. The Committee shall also determine the performance or other conditions, if any, that must be satisfied before all or part of an Option may be exercised.

(c) Payment .    The Committee shall determine the methods by which the exercise price of an Option may be paid, the form of payment, including, without limitation: (i) cash, (ii) shares of Stock having a fair market value on the date of delivery equal to the aggregate exercise price of the Option or exercised portion thereof, including shares that would be issuable or transferable upon exercise of the Option, or (iii) other property acceptable to the Committee (including through the delivery of a notice that the Participant has placed a market sell order with a broker with respect to shares of Stock then issuable upon exercise of the Option, and that the broker has been directed to pay a sufficient portion of the net proceeds of the sale to the Company in satisfaction of the Option exercise price; provided that payment of such proceeds is then made to the Company at such time as may be required by the Company not later than settlement of such sale), and the methods by which shares of Stock shall be delivered or deemed to be delivered to Participants. Notwithstanding any other provision of the Plan to the contrary, no Participant who is a member of the Board or an “executive officer” of the Company within the meaning of Section 13(k) of the Exchange Act shall be permitted to pay the exercise price of an Option, or continue any extension of credit with respect to the exercise price of an Option with a loan from the Company, the Partnership, the TRS or any Subsidiary or a loan arranged by the Company, the Partnership, the TRS or any Subsidiary in violation of Section 13(k) of the Exchange Act.

(d) Evidence of Grant .    All Options shall be evidenced by an Award Agreement between the Company and the Participant. The Award Agreement shall include such additional provisions as may be specified by the Committee.

5.2 Incentive Stock Options .    Incentive Stock Options shall be granted only to Company Employees or to Employees of a corporation which constitutes a “subsidiary corporation” of the Company within the meaning of Section 424(f) of the Code, and the terms of any Incentive Stock Options granted pursuant to the Plan, in addition to the requirements of Section 5.1 hereof, must comply with the provisions of this Section 5.2.

(a) Dollar Limitation .    The aggregate Fair Market Value (determined as of the time the Option is granted) of all shares of Stock with respect to which Incentive Stock Options are first exercisable by a Participant in any calendar year may not exceed $100,000 or such other limitation as imposed by Section 422(d) of the Code, or any successor provision. To the extent that Incentive Stock Options are first exercisable by a Participant in excess of such limitation, the excess shall be considered Non-Qualified Stock Options.

(b) Ten Percent Owners .    An Incentive Stock Option may not be granted to any individual who, at the date of grant, owns stock possessing more than ten percent of the total combined voting power of all classes of Stock of the Company or any “parent corporation” or “subsidiary corporation” of the Company within the meaning of Section 424(e) and 424(f), respectively, of the Code, unless such Option is granted at a price that is not less than 110% of Fair Market Value on the date of grant and the Option is exercisable for no more than five years from the date of grant.

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(c) Notice of Disposition .    The Participant shall give the Company prompt notice of any disposition of shares of Stock acquired by exercise of an Incentive Stock Option within (i) two years from the date of grant of such Incentive Stock Option or (ii) one year after the transfer of such shares of Stock to the Participant.

(d) Right to Exercise .    During a Participant’s lifetime, an Incentive Stock Option may be exercised only by the Participant.

(e) Failure to Meet Requirements .    Any Option (or portion thereof) purported to be an Incentive Stock Option, which, for any reason, fails to meet the requirements of Section 422 of the Code shall be considered a Non-Qualified Stock Option.

5.3 Transfer of Shares to a Company Employee, Consultant or Independent Director .    As soon as practicable after receipt by the Company of payment for the shares with respect to which an Option (which in the case of a Company Employee, Company Consultant or Independent Director was issued to and is held by such Participant in such capacity), or portion thereof, is exercised by a Participant who is a Company Employee, Company Consultant or Independent Director, then, with respect to each such exercise, the Company shall transfer to the Participant the number of shares equal to:

(a) The amount of the payment made by the Participant to the Company pursuant to Section 5.1(c), divided by

(b) The price per share of the shares subject to the Option as determined pursuant to Section 5.1(a) or 5.2(c), as applicable.

5.4 Transfer of Shares to a Partnership Employee or Consultant .    As soon as practicable after receipt by the Company, pursuant to Section 5.1(c), of payment for the shares with respect to which an Option (which was issued to and is held by a Partnership Employee or Partnership Consultant in such capacity), or portion thereof, is exercised by a Participant who is a Partnership Employee or Partnership Consultant, then, with respect to each such exercise:

(a) The Company shall transfer to the Participant the number of shares equal to (A) the amount of the payment made by the Participant to the Company pursuant to Section 5.1(c) divided by (B) the Fair Market Value of a share of Stock at the time of exercise (the “ Partnership Participant Purchased Shares ”);

(b) The Company shall sell to the Partnership the number of shares (the “ Partnership Purchased Shares ”) equal to the excess of (i) the amount obtained by dividing (A) the amount of the payment made by the Participant to the Company pursuant to Section 5.1(c) by (B) the price per share of the shares subject to the Option as determined pursuant to Section 5.1(a), over (ii) the Partnership Participant Purchased Shares. The price to be paid by the Partnership to the Company for the Partnership Purchased Shares (the “ Partnership Purchase Price ”) shall be an amount equal to the product of (x) the number of Partnership Purchased Shares multiplied by (y) the Fair Market Value of a share of Stock at the time of the exercise; and

(c) As soon as practicable after receipt of the Partnership Purchased Shares by the Partnership, the Partnership shall transfer such shares to the Participant at no additional cost, as additional compensation.

5.5 Transfer of Shares to a TRS Employee, Consultant or Director .    As soon as practicable after receipt by the Company, pursuant to Section 5.1(c), of payment for the shares with respect to which an Option (which was issued to and is held by a TRS Employee, TRS Director or TRS Consultant in such capacity), or portion thereof, is exercised by a Participant who is a TRS Employee, TRS Director or TRS Consultant, then, with respect to each such exercise:

(a) The Company shall transfer to the Participant the number of shares equal to (A) the amount of the payment made by the Participant to the Company pursuant to Section 5.1(c) divided by (B) the Fair Market Value of a share of Stock at the time of exercise (the “ TRS Participant Purchased Shares ”);

(b) The Company shall sell to the TRS the number of shares (the “ TRS Purchased Shares ”) equal to the excess of (i) the amount obtained by dividing (A) the amount of the payment made by the Participant to the

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Company pursuant to Section 5.1(c) by (B) the price per share of the shares subject to the Option as determined pursuant to Section 5.1(a), over (ii) the TRS Participant Purchased Shares. The price to be paid by the TRS to the Company for the TRS Purchased Shares (the “ TRS Purchase Price ”) shall be an amount equal to the product of (x) the number of TRS Purchased Shares multiplied by (y) the Fair Market Value of a share of Stock at the time of the exercise; and

As soon as practicable after receipt of the TRS Purchased Shares by the TRS, the TRS shall transfer such shares to the Participant at no additional cost, as additional compensation.

5.6 Transfer of Payment to the Partnership .    As soon as practicable after receipt by the Company of the amounts described in Sections 5.1(c), 5.4(b), and 5.5(b), the Company shall contribute to the Partnership an amount of cash equal to such payments and the Partnership shall issue an additional interest in the Partnership on the terms set forth in the Partnership Agreement.

5.7 Allocation of Payment upon Option Exercise .    Notwithstanding the foregoing, to the extent that a Participant provides services to more than one of the Company, the Partnership, the TRS or any Subsidiary, the Company may, in its discretion, allocate the payment or issuance of shares with respect to any Options exercised by such Participant (and the services performed by the Participant ) among such entities for purposes of the provisions of Sections 5.3, 5.4, 5.5 and 5.6 in order to ensure that the relationship between the Company and the TRS, the Partnership or such Subsidiary remains at arms-length.

ARTICLE 6.

RESTRICTED STOCK AWARDS

6.1 Grant of Restricted Stock .    The Committee is authorized to make Awards of Restricted Stock to any Participant selected by the Committee in such amounts and subject to such terms and conditions as determined by the Committee. All Awards of Restricted Stock shall be evidenced by an Award Agreement.

6.2 Issuance and Restrictions .    Restricted Stock shall be subject to such restrictions on transferability and other restrictions as the Committee may impose (including, without limitation, limitations on the right to vote Restricted Stock or the right to receive dividends on the Restricted Stock). These restrictions may lapse separately or in combination at such times, pursuant to such circumstances, in such installments, or otherwise, as the Committee determines at the time of the grant of the Award or thereafter.

6.3 Forfeiture .    Except as otherwise determined by the Committee at the time of the grant of the Award or thereafter, upon termination of employment or service during the applicable restriction period, Restricted Stock that is at that time subject to restrictions shall be forfeited; provided, however , that, the Committee may (a) provide in any Restricted Stock Award Agreement that restrictions or forfeiture conditions relating to Restricted Stock will lapse in whole or in part in the event of terminations resulting from specified causes, and (b) provide in other cases for the lapse in whole or in part of restrictions or forfeiture conditions relating to Restricted Stock.

6.4 Certificates for Restricted Stock .    Restricted Stock granted pursuant to the Plan may be evidenced in such manner as the Committee shall determine. If certificates representing shares of Restricted Stock are registered in the name of the Participant, certificates must bear an appropriate legend referring to the terms, conditions, and restrictions applicable to such Restricted Stock, and the Company, the TRS or the Partnership, as applicable, may, at its discretion, retain physical possession of the certificate until such time as all applicable restrictions lapse.

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ARTICLE 7.

STOCK APPRECIATION RIGHTS

7.1 Grant of Stock Appreciation Rights .

(a) A Stock Appreciation Right may be granted to any Participant selected by the Committee. A Stock Appreciation Right shall be subject to such terms and conditions not inconsistent with the Plan as the Committee shall impose and shall be evidenced by an Award Agreement.

(b) A Stock Appreciation Right shall entitle the Participant (or other person entitled to exercise the Stock Appreciation Right pursuant to the Plan) to exercise all or a specified portion of the Stock Appreciation Right (to the extent then exercisable pursuant to its terms) and to receive from the Company an amount equal to the product of (i) the excess of (A) the Fair Market Value of the Stock on the date the Stock Appreciation Right is exercised over (B) the Fair Market Value of the Stock on the date the Stock Appreciation Right was granted and (ii) the number of shares of Stock with respect to which the Stock Appreciation Right is exercised, subject to any limitations the Committee may impose.

7.2 Payment and Limitations on Exercise .

(a) Subject to Section 7.2(b) below, payment of the amounts determined under Sections 7.1(b) above shall be in cash, in Stock (based on its Fair Market Value as of the date the Stock Appreciation Right is exercised) or a combination of both, as determined by the Committee in the Award Agreement.

(b) To the extent any payment under Section 7.1(b) hereof is effected in Stock, it shall be made subject to satisfaction of all provisions of Article 5 above pertaining to Options.

ARTICLE 8.

OTHER TYPES OF AWARDS

8.1 Performance Share Awards .    Any Participant selected by the Committee may be granted one or more Performance Share awards which shall be denominated in a number of shares of Stock and which may be linked to any one or more of the Performance Criteria or other specific performance criteria determined appropriate by the Committee, in each case on a specified date or dates or over any period or periods determined by the Committee. In making such determinations, the Committee shall consider (among such other factors as it deems relevant in light of the specific type of award) the contributions, responsibilities and other compensation of the particular Participant.

8.2 Performance Stock Units .     Any Participant selected by the Committee may be granted one or more Performance Stock Unit awards which shall be denominated in unit equivalent of shares of Stock and/or units of value including dollar value of shares of Stock and which may be linked to any one or more of the Performance Criteria or other specific performance criteria determined appropriate by the Committee, in each case on a specified date or dates or over any period or periods determined by the Committee. In making such determinations, the Committee shall consider (among such other factors as it deems relevant in light of the specific type of award) the contributions, responsibilities and other compensation of the particular Participant.

8.3 Dividend Equivalents .

(a) Any Participant selected by the Committee may be granted Dividend Equivalents based on the dividends declared on the shares of Stock that are subject to any Award, to be credited as of dividend payment dates, during the period between the date the Award is granted and the date the Award is exercised, vests or expires, as determined by the Committee. Such Dividend Equivalents shall be converted to cash or additional shares of Stock by such formula and at such time and subject to such limitations as may be determined by the Committee.

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(b) Dividend Equivalents granted with respect to Options or SARs that are intended to be Qualified Performance-Based Compensation shall be payable, with respect to pre-exercise periods, regardless of whether such Option or SAR is subsequently exercised.

8.4 Stock Payments .    Any Participant selected by the Committee may receive Stock Payments in the manner determined from time to time by the Committee; provided , that unless otherwise determined by the Committee such Stock Payments shall be made in lieu of base salary, bonus, or other cash compensation otherwise payable to such Participant. The number of shares shall be determined by the Committee and may be based upon the Performance Criteria or other specific performance criteria determined appropriate by the Committee, determined on the date such Stock Payment is made or on any date thereafter.

8.5 Deferred Stock .    Any Participant selected by the Committee may be granted an award of Deferred Stock in the manner determined from time to time by the Committee. The number of shares of Deferred Stock shall be determined by the Committee and may be linked to the Performance Criteria or other specific performance criteria determined to be appropriate by the Committee, in each case on a specified date or dates or over any period or periods determined by the Committee. Stock underlying a Deferred Stock award will not be issued until the Deferred Stock award has vested, pursuant to a vesting schedule or performance criteria set by the Committee. Unless otherwise provided by the Committee, a Participant awarded Deferred Stock shall have no rights as a Company stockholder with respect to such Deferred Stock until such time as the Deferred Stock Award has vested and the Stock underlying the Deferred Stock Award has been issued.

8.6 Restricted Stock Units .    The Committee is authorized to make Awards of Restricted Stock Units to any Participant selected by the Committee in such amounts and subject to such terms and conditions as determined by the Committee. At the time of grant, the Committee shall specify the date or dates on which the Restricted Stock Units shall become fully vested and nonforfeitable, and may specify such conditions to vesting as it deems appropriate. At the time of grant, the Committee shall specify the maturity date applicable to each grant of Restricted Stock Units which shall be no earlier than the vesting date or dates of the Award and may be determined at the election of the grantee. On the maturity date, the Company, the TRS or the Partnership, as applicable, shall, subject to Section 10.5(b) hereof, transfer to the Participant one unrestricted, fully transferable share of Stock for each Restricted Stock Unit scheduled to be paid out on such date and not previously forfeited.

8.7 Profits Interest Units .    Any Participant selected by the Committee may be granted an award of Profits Interest Units in such amount and subject to such terms and conditions as may be determined by the Committee; provided, however, that Profits Interest Units may only be issued to a Participant for the performance of services to or for the benefit of the Partnership (a) in the Participant’s capacity as a partner of the Partnership, (b) in anticipation of the Participant becoming a partner of the Partnership, or (c) as otherwise determined by the Committee, provided that the Profits Interest Units would constitute “profits interests” within the meaning of the Code, Treasury Regulations promulgated thereunder and any published guidance by the Internal Revenue Service with respect thereto. At the time of grant, the Committee shall specify the date or dates on which the Profits Interest Units shall vest and become nonforfeitable, and may specify such conditions to vesting as it deems appropriate. Profits Interest Units shall be subject to such restrictions on transferability and other restrictions as the Committee may impose. These restrictions may lapse separately or in combination at such times, pursuant to such circumstances, in such installments, or otherwise, as the Committee determines at the time of the grant of the Award or thereafter. The Committee shall specify the purchase price, if any, to be paid by the grantee to the Partnership for the Profits Interest Units.

8.8 Other Incentive Awards .    Any Participant selected by the Committee may be granted one or more Awards that provide Participants with shares of Stock or the right to purchase shares of Stock or that have a value derived from the value of, or an exercise or conversion privilege at a price related to, or that are otherwise payable in or based on, shares of Stock or shareholder value or shareholder return, in each case on a specified date or dates or over any period or periods determined by the Committee. Other Incentive Awards may be linked to any one or more of the Performance Criteria or other specific performance criteria determined appropriate by

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the Committee. Amounts payable under Other Incentive Awards may be in cash, Stock, units of the Partnership, or a combination of any of the foregoing, as determined by the Committee.

8.9 Performance Bonus Awards .    Any Participant selected by the Committee may be granted a cash bonus (a “ Performance Bonus Award ”) payable upon the attainment of Performance Goals that are established by the Committee and relate to one or more of the Performance Criteria or other specific performance criteria determined to be appropriate by the Committee, in each case on a specified date or dates or over any period or periods determined by the Committee. Any such Performance Bonus Award paid to a Covered Employee may be a Performance-Based Award and be based upon objectively determinable bonus formulas established in accordance with Article 9 hereof.

8.10 Term .    Except as otherwise provided herein, the term of any Award of Performance Shares, Performance Stock Units, Dividend Equivalents, Stock Payments, Deferred Stock, Restricted Stock Units or an Other Incentive Award shall be set by the Committee in its discretion.

8.11 Exercise or Purchase Price .    The Committee may establish the exercise or purchase price, if any, of any Award of Performance Shares, Performance Stock Units, Deferred Stock, Stock Payments, Restricted Stock Units or an Other Incentive Award; provided, however , that such price shall not be less than the par value of a share of Stock on the date of grant, unless otherwise permitted by applicable state law.

8.12 Exercise upon Termination of Employment or Service .    An Award of Performance Shares, Performance Stock Units, Dividend Equivalents, Deferred Stock, Stock Payments, Restricted Stock Units, Profits Interest Units, and an Other Incentive Award shall only vest or be exercisable or payable while the Participant is an Employee, Consultant, a member of the Board, or a TRS Director, as applicable; provided, however , that the Committee in its sole and absolute discretion may provide that an Award of Performance Shares, Performance Stock Units, Dividend Equivalents, Stock Payments, Deferred Stock, Restricted Stock Units, Profits Interest Units or an Other Incentive Award may vest or be exercised or paid subsequent to a termination of employment or service, as applicable, or following a Change in Control of the Company, or because of the Participant’s retirement, death or Disability, or otherwise; provided, however , that, to the extent required to preserve tax deductibility under Section 162(m) of the Code, any such provision with respect to Performance Shares or Performance Stock Units that are intended to constitute Qualified Performance-Based Compensation shall be subject to the applicable requirements of Section 162(m) of the Code that apply to Qualified Performance-Based Compensation.

8.13 Form of Payment .    Payments with respect to any Awards granted under this Article 8, other than Profits Interest Units, shall be made in cash, in Stock or a combination of both, as determined by the Committee.

8.14 Award Agreement .    All Awards under this Article 8 shall be subject to such additional terms and conditions as determined by the Committee and shall be evidenced by an Award Agreement.

ARTICLE 9.

PERFORMANCE-BASED AWARDS

9.1 Purpose .    The purpose of this Article 9 is to provide the Committee the ability to qualify Awards other than Options and SARs and that are granted pursuant to Articles 6 and 8 hereof as Qualified Performance-Based Compensation. If the Committee, in its discretion, decides to grant a Performance-Based Award to a Covered Employee, the provisions of this Article 9 shall control over any contrary provision contained in Articles 6 or 8 hereof; provided, however , that the Committee may in its discretion grant Awards to Covered Employees that are based on Performance Criteria or Performance Goals but that do not satisfy the requirements of this Article 9.

9.2 Applicability .    This Article 9 shall apply only to those Covered Employees selected by the Committee to receive Performance-Based Awards. The designation of a Covered Employee as a Participant for a

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Performance Period shall not in any manner entitle the Participant to receive an Award for the period. Moreover, designation of a Covered Employee as a Participant for a particular Performance Period shall not require designation of such Covered Employee as a Participant in any subsequent Performance Period and designation of one Covered Employee as a Participant shall not require designation of any other Covered Employees as a Participant in such period or in any other period.

9.3 Procedures with Respect to Performance-Based Awards .    To the extent necessary to comply with the Qualified Performance-Based Compensation requirements of Section 162(m)(4)(C) of the Code, with respect to any Award granted under Articles 6 or 8 hereof which may be granted to one or more Covered Employees, no later than ninety (90) days following the commencement of any fiscal year in question or any other designated fiscal period or period of service (or such other time as may be required or permitted by Section 162(m) of the Code), the Committee shall, in writing, (a) designate one or more Covered Employees, (b) select the Performance Criteria applicable to the Performance Period, (c) establish the Performance Goals, and amounts of such Awards, as applicable, which may be earned for such Performance Period, and (d) specify the relationship between Performance Criteria and the Performance Goals and the amounts of such Awards, as applicable, to be earned by each Covered Employee for such Performance Period. Following the completion of each Performance Period, the Committee shall certify in writing whether the applicable Performance Goals have been achieved for such Performance Period. In determining the amount earned by a Covered Employee, the Committee shall have the right to reduce or eliminate (but not to increase) the amount payable at a given level of performance to take into account additional factors that the Committee may deem relevant to the assessment of individual or corporate performance for the Performance Period.

9.4 Payment of Performance-Based Awards .    Unless otherwise provided in the applicable Award Agreement, a Participant must be employed by the Company or a Company Subsidiary, the Partnership or a Partnership Subsidiary, or the TRS or a TRS Subsidiary, on the day a Performance-Based Award for such Performance Period is paid to the Participant. Furthermore, a Participant shall be eligible to receive payment pursuant to a Performance-Based Award for a Performance Period only if the Performance Goals for such period are achieved, to the extent required in order to preserve tax deductibility under Code Section 162(m). In determining the amount earned under a Performance-Based Award, the Committee may reduce or eliminate the amount of the Performance-Based Award earned for the Performance Period, if in its sole and absolute discretion, such reduction or elimination is appropriate.

9.5 Additional Limitations .    Notwithstanding any other provision of the Plan, to the extent required in order to preserve tax deductibility under Code Section 162(m), any Award which is granted to a Covered Employee and is intended to constitute Qualified Performance-Based Compensation shall be subject to any additional limitations set forth in Section 162(m) of the Code (including any amendment to Section 162(m) of the Code) or any regulations or rulings issued thereunder that are requirements for qualification as qualified performance-based compensation as described in Section 162(m)(4)(C) of the Code, and the Plan shall be deemed amended to the extent necessary to conform to such requirements.

ARTICLE 10.

PROVISIONS APPLICABLE TO AWARDS

10.1 Stand-Alone and Tandem Awards .    Awards granted pursuant to the Plan may, in the discretion of the Committee, be granted either alone, in addition to, or in tandem with, any other Award granted pursuant to the Plan. Awards granted in addition to or in tandem with other Awards may be granted either at the same time as or at a different time from the grant of such other Awards.

10.2 Award Agreement .    Awards under the Plan shall be evidenced by Award Agreements that set forth the terms, conditions and limitations for each Award which may include the term of an Award, the provisions applicable in the event the Participant’s employment or service terminates, and the Company’s authority to unilaterally or bilaterally amend, modify, suspend, cancel or rescind an Award.

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10.3 Limits on Transfer .    No right or interest of a Participant in any Award may be pledged, encumbered, or hypothecated to or in favor of any party other than the Company, the TRS, the Partnership or a Subsidiary, or shall be subject to any lien, obligation, or liability of such Participant to any other party other than the Company, the TRS, the Partnership or a Subsidiary. Except as otherwise provided by the Committee, no Award shall be assigned, transferred, or otherwise disposed of by a Participant other than by will or the laws of descent and distribution. The Committee by express provision in the Award or an amendment thereto may permit an Award to be transferred to, exercised by and paid to certain persons or entities related to the Participant, including but not limited to members of the Participant’s family, charitable institutions, or trusts or other entities whose beneficiaries or beneficial owners are members of the Participant’s family and/or charitable institutions, or to such other persons or entities as may be expressly approved by the Committee, pursuant to such conditions and procedures as the Committee may establish; provided, however, that no such transfer of an Incentive Stock Option shall be permitted to the extent that such transfer would cause the Incentive Stock Option to fail to qualify as an “incentive stock option” under Section 422 of the Code. Any permitted transfer shall be subject to the condition that the Committee receive evidence satisfactory to it that the transfer is being made for estate and/or tax planning purposes (or to a “blind trust” in connection with the Participant’s termination of employment or service with the Company, the TRS, the Partnership or a Subsidiary to assume a position with a governmental, charitable, educational or similar non-profit institution) and on a basis consistent with the Company’s lawful issue of securities. Notwithstanding the foregoing, in no event shall any Award be transferable by a Participant to a third party for consideration.

10.4 Beneficiaries .    Notwithstanding Section 10.3 hereof, a Participant may, in the manner determined by the Committee, designate a beneficiary to exercise the rights of the Participant and to receive any distribution with respect to any Award upon the Participant’s death. A beneficiary, legal guardian, legal representative, or other person claiming any rights pursuant to the Plan is subject to all terms and conditions of the Plan and any Award Agreement applicable to the Participant, except to the extent the Plan and Award Agreement otherwise provide, and to any additional restrictions deemed necessary or appropriate by the Committee. If the Participant is married and resides in a community property state, a designation of a person other than the Participant’s spouse as his or her beneficiary with respect to more than 50% of the Participant’s interest in the Award shall not be effective without the prior written consent of the Participant’s spouse. If no beneficiary has been designated or survives the Participant, payment shall be made to the person entitled thereto pursuant to the Participant’s will or the laws of descent and distribution. Subject to the foregoing, a beneficiary designation may be changed or revoked by a Participant at any time provided the change or revocation is filed with the Committee.

10.5 Stock Certificates; Book Entry Procedures .

(a) Notwithstanding anything herein to the contrary, the Company, the TRS, nor the Partnership shall not be required to issue or deliver any certificates evidencing shares of Stock pursuant to the exercise of any Award, unless and until the Board has determined, with advice of counsel, that the issuance and delivery of such certificates is in compliance with all applicable laws, regulations of governmental authorities and, if applicable, the requirements of any exchange on which the shares of Stock are listed or traded. All Stock certificates delivered pursuant to the Plan are subject to any stop-transfer orders and other restrictions as the Committee deems necessary or advisable to comply with federal, state, or foreign jurisdiction, securities or other laws, rules and regulations and the rules of any national securities exchange or automated quotation system on which the Stock is listed, quoted, or traded. The Committee may place legends on any Stock certificate to reference restrictions applicable to the Stock. In addition to the terms and conditions provided herein, the Board may require that a Participant make such reasonable covenants, agreements, and representations as the Board, in its discretion, deems advisable in order to comply with any such laws, regulations, or requirements. The Committee shall have the right to require any Participant to comply with any timing or other restrictions with respect to the settlement or exercise of any Award, including a window-period limitation, as may be imposed in the discretion of the Committee.

(b) Notwithstanding any other provision of the Plan, unless otherwise determined by the Committee or required by any applicable law, rule or regulation, the Company shall not deliver to any Participant certificates evidencing shares of Stock issued in connection with any Award and instead such shares of

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Stock shall be recorded in the books of the Company (or, as applicable, its transfer agent or stock plan administrator).

10.6 Paperless Exercise .    In the event that the Company establishes, for itself or using the services of a third party, an automated system for the exercise of Awards, such as a system using an internet website or interactive voice response, then the paperless exercise of Awards by a Participant may be permitted through the use of such an automated system.

ARTICLE 11.

CHANGES IN CAPITAL STRUCTURE

11.1 Adjustments .

(a) In the event of any stock dividend, stock split, combination or exchange of shares, merger, consolidation, spin-off, recapitalization or other distribution (other than normal cash dividends) of Company assets to stockholders, or any other change affecting the shares of Stock or the share price of the Stock, the Committee shall make such proportionate adjustments, if any, as the Committee in its discretion may deem appropriate to reflect such change with respect to (a) the aggregate number and kind of shares that may be issued under the Plan (including, but not limited to, adjustments of the limitations in Sections 3.1 and 3.3 hereof); (b) the terms and conditions of any outstanding Awards (including, without limitation, any applicable performance targets or criteria with respect thereto); and (c) the grant or exercise price per share for any outstanding Awards under the Plan. Any adjustment affecting an Award intended as Qualified Performance-Based Compensation shall be made consistent with the requirements of Section 162(m) of the Code.

(b) In the event of any transaction or event described in Section 11.1(a) hereof or any unusual or nonrecurring transactions or events affecting the Company, the Partnership, any affiliate of the Company or the Partnership, or the financial statements of the Company, the Partnership or any affiliate, or of changes in applicable laws, regulations or accounting principles, the Committee, in its sole and absolute discretion, and on such terms and conditions as it deems appropriate, either by the terms of the Award or by action taken prior to the occurrence of such transaction or event and either automatically or upon the Participant’s request, is hereby authorized to take any one or more of the following actions whenever the Committee determines that such action is appropriate in order to prevent dilution or enlargement of the benefits or potential benefits intended to be made available under the Plan or with respect to any Award under the Plan, to facilitate such transactions or events or to give effect to such changes in laws, regulations or principles:

(i) To provide for either (A) termination of any such Award in exchange for an amount of cash, if any, equal to the amount that would have been attained upon the exercise of such Award or realization of the Participant’s rights (and, for the avoidance of doubt, if as of the date of the occurrence of the transaction or event described in this Section 11.1 the Committee determines in good faith that no amount would have been attained upon the exercise of such Award or realization of the Participant’s rights, then such Award may be terminated by the Company without payment) or (B) the replacement of such Award with other rights or property selected by the Committee in its sole discretion;

(ii) To provide that such Award be assumed by the successor or survivor corporation, or a parent or subsidiary thereof, or shall be substituted for by similar options, rights or awards covering the stock of the successor or survivor corporation, or a parent or subsidiary thereof, with appropriate adjustments as to the number and kind of shares and prices;

(iii) To make adjustments in the number and type of shares of Stock (or other securities or property) subject to outstanding Awards, and in the number and kind of outstanding Restricted Stock or Deferred Stock and/or in the terms and conditions of (including the grant or exercise price), and the criteria included in, outstanding options, rights and awards and options, rights and awards which may be granted in the future;

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(iv) To provide that such Award shall be exercisable or payable or fully vested with respect to all shares covered thereby, notwithstanding anything to the contrary in the Plan or the applicable Award Agreement; and

(v) To provide that the Award cannot vest, be exercised or become payable after such event.

11.2 Acceleration Upon a Change in Control .    Notwithstanding Section 11.1 hereof, and except as may otherwise be provided in any applicable Award Agreement or other written agreement entered into between the Company and a Participant, if a Change in Control occurs and a Participant’s Awards are not converted, assumed, or replaced by a successor entity, then immediately prior to the Change in Control such Awards shall become fully exercisable, and all forfeiture restrictions on such Awards shall lapse. Upon, or in anticipation of, a Change in Control, the Committee may cause any and all Awards outstanding hereunder to terminate at a specific time in the future, including but not limited to the date of such Change in Control, and shall give each Participant the right to exercise such Awards during a period of time as the Committee, in its sole and absolute discretion, shall determine. In the event that the terms of any agreement between the Company, the TRS, the Partnership or any Subsidiary or affiliate and a Participant contains provisions that conflict with and are more restrictive than the provisions of this Section 11.2, this Section 11.2 shall prevail and control and the more restrictive terms of such agreement (and only such terms) shall be of no force or effect.

11.3 No Other Rights .    Except as expressly provided in the Plan, no Participant shall have any rights by reason of any subdivision or consolidation of shares of stock of any class, the payment of any dividend, any increase or decrease in the number of shares of stock of any class or any dissolution, liquidation, merger, or consolidation of the Company or any other corporation. Except as expressly provided in the Plan or pursuant to action of the Committee under the Plan, no issuance 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 of shares of Stock subject to an Award or the grant or exercise price of any Award.

ARTICLE 12.

ADMINISTRATION

12.1 Committee .    Unless and until the Board delegates administration of the Plan to a Committee as set forth below, the Plan shall be administered by the full Board, and for such purposes the term “Committee” as used in this Plan shall be deemed to refer to the Board. The Board, at its discretion (including to the extent it deems it advisable to comply with the requirements of Section 162(m) of the Code, Rule 16b-3 promulgated under the Exchange Act or any other applicable rule or regulation), shall delegate administration of the Plan to a Committee. The Committee shall consist solely of two or more members of the Board each of whom is an “outside director,” within the meaning of Section 162(m) of the Code, a Non-Employee Director and an “independent director” under the rules of the New York Stock Exchange (or other principal securities market on which shares of Stock are traded). The governance of such Committee shall be subject to the charter of the Committee as approved by the Board. Any action taken by the Committee shall be valid and effective, whether or not members of the Committee at the time of such action are later determined not to have satisfied the requirements for membership set forth in this Section 12.1 or otherwise provided in the charter of the Committee. Notwithstanding the foregoing: (a) the full Board, acting by a majority of its members in office, shall conduct the general administration of the Plan with respect to all Awards granted to Independent Directors and for purposes of such Awards the term “Committee” as used in this Plan shall be deemed to refer to the Board and (b) the Committee may delegate its authority hereunder to the extent permitted by Section 12.5 hereof. In its sole discretion, the Board may at any time and from time to time exercise any and all rights and duties of the Committee under the Plan.

12.2 Support for the Committee .    Each member of the Committee is entitled to, in good faith, rely or act upon any report or other information furnished to that member by any officer or other employee of the Company, the TRS, the Partnership or any Subsidiary, the independent certified public accountants of the Company, the

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TRS, or the Partnership, or any executive compensation consultant or other professional retained by the Company, the TRS, or the Partnership to assist in the administration of the Plan.

12.3 Authority of Committee .    Subject to any specific designation in the Plan, the Committee has the exclusive power, authority and discretion to:

(a) Designate Participants to receive Awards;

(b) Determine the type or types of Awards to be granted to each Participant;

(c) Determine the number of Awards to be granted and the number of shares of Stock or Profits Interest Units to which an Award will relate;

(d) Determine the terms and conditions of any Award granted pursuant to the Plan, including, but not limited to, the exercise price, grant price, or purchase price, any reload provision, any restrictions or limitations on the Award, any schedule for lapse of forfeiture restrictions or restrictions on the exercisability of an Award, and accelerations or waivers thereof, any provisions related to non-competition and recapture of gain on an Award, based in each case on such considerations as the Committee in its sole discretion determines; provided, however , that the Committee shall not have the authority to accelerate the vesting or waive the forfeiture of any Performance-Based Awards;

(e) Determine whether, to what extent, and pursuant to what circumstances an Award may be settled in, or the exercise price of an Award may be paid in, cash, Stock, other Awards, or other property, or an Award may be canceled, forfeited, or surrendered;

(f) Prescribe the form of each Award Agreement, which need not be identical for each Participant;

(g) Decide all other matters that must be determined in connection with an Award;

(h) Establish, adopt, or revise any rules and regulations as it may deem necessary or advisable to administer the Plan;

(i) Interpret the terms of, and any matter arising pursuant to, the Plan or any Award Agreement;

(j) In the case of Awards to TRS Employees, TRS Consultants, Partnership Employees or Partnership Consultants, determine the mechanics for the transfer of rights under such Awards; and

(k) Make all other decisions and determinations that may be required pursuant to the Plan or as the Committee deems necessary or advisable to administer the Plan.

12.4 Decisions Binding .    The Committee’s interpretation of the Plan, any Awards granted pursuant to the Plan, any Award Agreement and all decisions and determinations by the Committee with respect to the Plan are final, binding, and conclusive on all parties.

12.5 Delegation of Authority .    To the extent permitted by applicable law, the Committee may from time to time delegate to a committee of one or more members of the Board or one or more officers of the Company the authority to grant or amend Awards to Participants other than (a) senior executives of the Company who are subject to Section 16 of the Exchange Act or Independent Directors, or (b) officers of the Company (or members of the Board) to whom authority to grant or amend Awards has been delegated hereunder. Any delegation hereunder shall be subject to the restrictions and limits that the Committee specifies at the time of such delegation, and the Committee may at any time rescind the authority so delegated or appoint a new delegatee. At all times, the delegatee appointed under this Section 12.5 shall serve in such capacity at the pleasure of the Committee.

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ARTICLE 13.

EFFECTIVE AND EXPIRATION DATE

13.1 Effective Date .    The Plan is effective as of the date the Plan is approved by the Company’s stockholders (the “ Effective Date ”). The Plan will be deemed to be approved by the stockholders if it receives the affirmative vote of a majority of votes cast at a meeting duly held in accordance with the applicable provisions of the Company’s bylaws, provided that the total vote cast on the proposal represents over 50% in interest of all securities entitled to vote on the proposal.

13.2 Expiration Date .    No Award may be granted pursuant to the Plan after the tenth anniversary of the Effective Date. Any Awards that are outstanding on the tenth anniversary of the Effective Date shall remain in force according to the terms of the Plan and the applicable Award Agreement.

ARTICLE 14.

AMENDMENT, MODIFICATION, AND TERMINATION

14.1 Amendment, Modification, and Termination .    Subject to Section 15.17 hereof, with the approval of the Board, at any time and from time to time, the Committee may terminate, amend or modify the Plan; provided, however , that (a) to the extent the Company deems it necessary or desirable to comply with any applicable law, regulation, or stock exchange rule, the Company shall obtain stockholder approval of any Plan amendment in such a manner and to such a degree as required, and (b) stockholder approval shall be required for any amendment to the Plan that (i) increases the number of shares available under the Plan (other than any adjustment as provided by Article 11 hereof), (ii) permits the Committee to grant Options or SARs with an exercise price that is below Fair Market Value on the date of grant, or (iii) permits the Committee to extend the exercise period for an Option or SAR beyond ten years from the date of grant. Notwithstanding any provision in this Plan to the contrary, absent approval of the stockholders of the Company, (I) no Option or SAR may be amended to reduce the per share exercise price of the shares subject to such Option or SAR below the per share exercise price as of the date the Award is granted, (II) except as permitted by Article 11 hereof, no Option or SAR may be granted in exchange for, or in connection with, the cancellation or surrender of an Option or SAR having a higher per share exercise price, and (III) except as permitted by Article 11 hereof, no Award may be granted in exchange for the cancellation or surrender of an Option or SAR with a per share exercise price that is greater than the Fair Market Value on the date of such grant or cancellation.

14.2 Awards Previously Granted .    Except with respect to amendments made pursuant to Section 15.17 hereof, no termination, amendment, or modification of the Plan shall adversely affect in any material way any Award previously granted pursuant to the Plan without the prior written consent of the Participant.

ARTICLE 15.

GENERAL PROVISIONS

15.1 No Rights to Awards .    No Eligible Individual or other person shall have any claim to be granted any Award pursuant to the Plan, and none of the Company, the TRS, the Partnership, any Subsidiary or the Committee is obligated to treat Eligible Individuals, Participants or any other persons uniformly.

15.2 No Stockholders Rights .    Except as otherwise provided herein, a Participant shall have none of the rights of a stockholder with respect to shares of Stock covered by any Award until the Participant becomes the record owner of such shares of Stock.

15.3 Withholding .    The Company, the TRS, the Partnership or any Subsidiary, as applicable, shall have the authority and the right to deduct or withhold, or require a Participant to remit to the Company, the TRS, the Partnership or any Subsidiary, as applicable, an amount sufficient to satisfy federal, state, local and foreign taxes

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(including the Participant’s employment tax obligations) required by law to be withheld with respect to any taxable event concerning a Participant arising as a result of this Plan. The Committee may in its discretion and in satisfaction of the foregoing requirement require or allow a Participant to elect to have the Company, the TRS, the Partnership or any Subsidiary, as applicable, withhold shares of Stock otherwise issuable under an Award (or allow the return of shares of Stock) having a fair market value on the date of withholding equal to the sums required to be withheld. Notwithstanding any other provision of the Plan, the number of shares of Stock which may be withheld with respect to the issuance, vesting, exercise or payment of any Award (or which may be repurchased from the Participant of such Award within six months (or such other period as may be determined by the Committee) after such shares of Stock were acquired by the Participant from the Company) in order to satisfy the Participant’s federal, state, local and foreign income and payroll tax liabilities with respect to the issuance, vesting, exercise or payment of the Award shall be limited to the number of shares which have a fair market value on the date of withholding or repurchase equal to the aggregate amount of such liabilities based on the minimum statutory withholding rates for federal, state, local and foreign income tax and payroll tax purposes that are applicable to such supplemental taxable income.

15.4 No Right to Employment or Services .    Nothing in the Plan or any Award Agreement shall interfere with or limit in any way the right of the Company, the TRS, the Partnership or any Subsidiary to terminate any Participant’s employment or services at any time, nor confer upon any Participant any right to continue in the employ or service of the Company, the TRS, the Partnership or any Subsidiary.

15.5 Unfunded Status of Awards .    The Plan is intended to be an “unfunded” plan for incentive compensation. With respect to any payments not yet made to a Participant pursuant to an Award, nothing contained in the Plan or any Award Agreement shall give the Participant any rights that are greater than those of a general creditor of the Company, the TRS, the Partnership or any Subsidiary.

15.6 Indemnification .    To the extent allowable pursuant to applicable law, each member of the Committee or of the Board shall be indemnified and held harmless by the Company, the TRS, and/or the Partnership from any loss, cost, liability, or expense that may be imposed upon or reasonably incurred by such member in connection with or resulting from any claim, action, suit, or proceeding to which he or she may be a party or in which he or she may be involved by reason of any action or failure to act pursuant to the Plan and against and from any and all amounts paid by him or her in satisfaction of judgment in such action, suit, or proceeding against him or her; provided he or she gives the Company, the TRS and the Partnership an opportunity, at its own expense, to handle and defend the same before he or she undertakes to handle and defend it on his or her own behalf. The foregoing right of indemnification shall not be exclusive of any other rights of indemnification to which such persons may be entitled pursuant to the Company’s Certificate of Incorporation or bylaws, as a matter of law, or otherwise, or any power that the Company, the TRS, and/or the Partnership may have to indemnify them or hold them harmless.

15.7 Relationship to Other Benefits .    No payment pursuant to the Plan shall be taken into account in determining any benefits pursuant to any pension, retirement, savings, profit sharing, group insurance, welfare or other benefit plan of the Company, the TRS, the Partnership or any Subsidiary except to the extent otherwise expressly provided in writing in such other plan or an agreement thereunder.

15.8 Expenses .    The expenses of administering the Plan shall be borne by the Company, the TRS, the Partnership and their Subsidiaries.

15.9 Titles and Headings .    The titles and headings of the Sections in the Plan are for convenience of reference only and, in the event of any conflict, the text of the Plan, rather than such titles or headings, shall control.

15.10 Fractional Shares .    No fractional shares of Stock shall be issued and the Committee shall determine, in its discretion, whether cash shall be given in lieu of fractional shares or whether such fractional shares shall be eliminated by rounding up or down as appropriate.

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15.11 Limitations Applicable to Section 16 Persons .    Notwithstanding any other provision of the Plan, the Plan, and any Award granted or awarded to any Participant who is then subject to Section 16 of the Exchange Act, shall be subject to any additional limitations set forth in any applicable exemptive rule under Section 16 of the Exchange Act (including any amendment to Rule 16b-3 under the Exchange Act) that are requirements for the application of such exemptive rule if and to the extent necessary in order that the Participant not have actual short-swing profits liability under Section 16(b) of the Exchange Act, and, to the extent permitted by applicable law, the Plan and such Awards shall be deemed amended to the extent necessary to conform to such applicable exemptive rule.

15.12 Government and Other Regulations .    The obligation of the Company, the TRS and the Partnership to make payment of awards in Stock, Profits Interest Units or otherwise shall be subject to all applicable laws, rules, and regulations, and to such approvals by government agencies as may be required. The Company shall be under no obligation to register pursuant to the Securities Act, as amended, any of the shares of Stock or Profits Interest Units paid pursuant to the Plan. If the shares or Profits Interest Units paid pursuant to the Plan may in certain circumstances be exempt from registration pursuant to the Securities Act, as amended, the Company, the TRS and the Partnership may restrict the transfer of such shares or Profits Interest Units in such manner as it deems advisable to ensure the availability of any such exemption.

15.13 Section 83(b) Election Prohibited .    No Participant may make an election under Section 83(b) of the Code with respect to any Award under the Plan without the consent of the Company or the Partnership, which the Company or the Partnership may grant or withhold in its sole discretion.

15.14 Grant of Awards to Certain Employees or Consultants .    The Company, the TRS, the Partnership or any Subsidiary may provide through the establishment of a formal written policy or otherwise for the method by which shares of Stock or other securities and/or payment therefor may be exchanged or contributed between the Company and such other party, or may be returned to the Company upon any forfeiture of Stock or other securities by the Participant, for the purpose of ensuring that the relationship between the Company and the TRS, the Partnership or such Subsidiary remains at arms-length.

15.15 Restrictions on Awards .    This Plan shall be interpreted and construed in a manner consistent with the Company’s status as a REIT. No Award shall be granted or awarded, and with respect to an Award already granted under the Plan, such Award shall not be exercisable or payable:

(a) To the extent that the grant, exercise or payment of such Award could cause the Participant to be in violation of the Ownership Limit (as defined in the Company’s Articles of Incorporation, as amended from time to time) or Subparagraph E(2) of Article IV (or any successor provision thereto) of the Company’s Articles of Incorporation, as amended from time to time; or

(b) If, in the discretion of the Committee, the grant or exercise of such Award could impair the Company’s status as a REIT.

15.16 Governing Law .    The Plan and all Award Agreements shall be construed in accordance with and governed by the laws of the State of Maryland.

15.17 Section 409A .    To the extent that the Committee determines that any Award granted under the Plan is subject to Section 409A of the Code, the Award Agreement evidencing such Award shall incorporate the terms and conditions required by Section 409A of the Code. To the extent applicable, the Plan and Award Agreements shall be interpreted in accordance with Section 409A of the Code and Department of Treasury regulations and other interpretive guidance issued thereunder, including without limitation any such regulations or other guidance that may be issued after the Effective Date. Notwithstanding any provision of the Plan to the contrary, in the event that following the Effective Date the Committee determines that any Award may be subject to Section 409A of the Code and related Department of Treasury guidance (including such Department of Treasury guidance as may be issued after the Effective Date), the Committee may adopt such amendments to the Plan and

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the applicable Award Agreement or adopt other policies and procedures (including amendments, policies and procedures with retroactive effect), or take any other actions, that the Committee determines are necessary or appropriate to (a) exempt the Award from Section 409A of the Code and/or preserve the intended tax treatment of the benefits provided with respect to the Award, or (b) comply with the requirements of Section 409A of the Code and related Department of Treasury guidance.

* * * * *

I hereby certify that the foregoing Plan was duly adopted by the Board of Directors of Kilroy Realty Corporation on March 30, 2006.

* * * * *

I hereby certify that the foregoing Plan was approved by the stockholders of Kilroy Realty Corporation on May 18, 2006.

Executed on this 18 ^th day of May, 2006.

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