FOURTH AMENDMENT TO LEASE

Exhibit 10.29

FOURTH AMENDMENT TO LEASE

THIS FOURTH AMENDMENT TO LEASE (this “Amendment”) is entered into as of the 11 day of May, 2011, by and between 3900 SAN CLEMENTE, L.P., a Texas limited partnership (“Landlord”) and BAZAARVOICE, INC., a Delaware corporation (“Tenant”).

WHEREAS, Landlord and Tenant entered into that certain Office Lease Agreement dated as of July 15, 2009 (the “Lease Agreement”) pursuant to which Tenant leased from Landlord certain space in that building known as 3900 San Clemente, and located at 3900 N. Capital of Texas Highway, Austin, Texas 78746 (the “Building”), as more particularly described therein;

WHEREAS, the Lease Agreement has been amended by that certain Acceptance of Premises Memorandum dated October 21, 2009, that certain First Amendment to Lease Agreement (the “First Amendment”) dated as of January 19, 2010, that certain Second Amendment to Lease (the “Second Amendment”) dated as of February 8, 2010, that certain Third Amendment to Lease dated as of March 30, 2010, and that certain Acceptance of Premises Memorandum for Suite 250 dated May 12, 2010 (the Lease Agreement, as amended, the “Lease”), whereby Tenant currently leases from Landlord approximately 76,804 square feet of Agreed Rentable Area (the “Current Premises”) known as Suite 300 and Suite 250 on the third (3rd) and second (2nd) floors of the Building;

WHEREAS, Tenant desires to lease additional space in the Building currently designated as Suite 260, containing approximately 17,282 square feet of Agreed Rentable Area located on the second (2nd) floor of the Building as shown on Exhibit A attached hereto (the “260 Expansion Space”);

WHEREAS, the Term of the Lease is currently scheduled to expire by its terms on January 31, 2015, and Tenant desires to extend the Term of the Lease with respect to only the 260 Expansion Space to expire on the last day of the calendar month which is fifty (50) months following the 260 Expansion Date (hereinafter defined);

WHEREAS, subject to the terms and conditions set forth below, Landlord has agreed to lease the 260 Expansion Space to Tenant and to extend the Term as set forth herein; and

WHEREAS, Landlord and Tenant desire to amend the Lease to reflect their agreements as to the terms and conditions governing Tenant’s lease of the 260 Expansion Space and the extension of the Term of the Lease.

NOW, THEREFORE, in consideration of the premises and the mutual covenants between the parties herein contained, Landlord and Tenant hereby agree as follows:

1. Premises.

(a) Effective as of the 260 Expansion Date, Landlord shall lease the 260 Expansion Space to Tenant and Tenant shall lease the 260 Expansion Space from Landlord, and the Premises, as defined in the Lease, shall mean, collectively, the Current Premises and the 260 Expansion Space. Accordingly, effective as of the 260 Expansion Date, the “Agreed Rentable Area”, as defined in Item 2 of the Basic Lease Provisions, shall be amended to mean 94,086 square feet. The 260 Expansion Space shall be subject to all the terms and conditions of the

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Lease except as expressly modified herein and except that Tenant shall not be entitled to receive any allowances or free rent granted with respect to the Current Premises unless such concessions are expressly provided for herein with respect to the 260 Expansion Space.

(b) As used herein, the “260 Expansion Date” shall mean the date of Substantial Completion with respect to the 260 Expansion Space, subject to adjustment for any Tenant Delays (as defined and determined in accordance with the terms of the Work Letter attached hereto as Exhibit B) and delivery of possession of the 260 Expansion Space in vacant, broom clean condition. Upon Substantial Completion of the 260 Expansion Space, Landlord and Tenant shall execute an Acceptance of Premises Memorandum in substantially the form of Exhibit E attached to the Lease. If Tenant occupies any portion of the 260 Expansion Space, other than for the purposes of installing Tenant’s property as described in Section 1(c) below, without executing the Acceptance of Premises Memorandum, Tenant shall be deemed to have accepted such 260 Expansion Space for all purposes, subject to the terms of the Lease as otherwise applicable to the Premises (e.g., Tenant’s express rights to object to defects). Effective as of the 260 Expansion Date, Exhibit A attached hereto shall be added to and incorporated into Exhibit A to the Lease. Notwithstanding anything to the contrary in this Amendment, if the 260 Expansion Date is delayed beyond July 1, 2011, then the Density Surcharge that would otherwise be payable under the Lease shall be deemed waived until the date that is sixty (60) days after the 260 Expansion Date.

(c) Tenant shall have the right to access the 260 Expansion Space approximately two (2) weeks prior to the 260 Expansion Date for the sole purpose of installing furniture, trade fixtures, telecommunications or other personal property of Tenant and otherwise preparing the 260 Expansion Space for occupancy, provided that Tenant coordinates such access with Landlord’s general contractor and does not materially interfere with the construction of the Tenant’s Improvements (as defined in Exhibit B attached hereto). Such access shall be subject to all of the terms and conditions of the Lease, and except for the cost of above Building standard services requested by Tenant in writing (e.g. after hours HVAC), Tenant shall not be required to pay Rent or other remuneration with respect to the 260 Expansion Space for the period of time prior to the 260 Expansion Date during which Tenant performs such work in the 260 Expansion Space.

2. Term. The Term of the Lease is hereby extended with respect to only the 260 Expansion Space to expire on the last day of the calendar month which is fifty (50) months following the 260 Expansion Date (such date, the “260 Expiration Date”), unless sooner terminated in accordance with the terms of the Lease. The Term of the Lease with respect to the Current Premises shall expire in accordance with the terms of the Lease.

3. Basic Rent. Commencing on the 260 Expansion Date, in addition to the Basic Rent payable with respect to the Current Premises, Tenant shall pay Basic Rent for the 260 Expansion Space as follows:

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All such Basic Rent shall be payable in accordance with the terms of the Lease. As used in this Amendment, an “Expansion Month” means a period of time commencing on the same numeric day as the 260 Expansion Date and ending on (but not including) the day in the next calendar month that is the same numeric date as the 260 Expansion Date; provided, however, that if the 260 Expansion Date does not occur on the first day of a calendar month, then the third (3rd) Expansion Month shall be extended to end on the last day of the third (3rd) full calendar month following the 260 Expansion Date, and the succeeding Expansion Months shall commence on the first day of each calendar month thereafter.

4. Tenant’s Pro Rata Share Percentage. Commencing on the 260 Expansion Date, Tenant shall pay Additional Rent with respect to the 260 Expansion Space in accordance with the terms of the Lease, including without limitation during the first two Expansion Months. Effective as of the 260 Expansion Date, “Tenant’s Pro Rata Share Percentage”, as defined in Item 4 of the Basic Lease Provisions, shall be amended to mean 37.4627%.

5. Acceptance of 260 Expansion Space. Tenant acknowledges that Tenant has inspected the 260 Expansion Space and, except for latent defects discovered and reported to Landlord by Tenant within 180 days after the 260 Expansion Date and subject to Landlord’s completion of its obligations under the Work Letter attached hereto as Exhibit B, Tenant hereby accepts the 260 Expansion Space (including the suitability of the 260 Expansion Space for the Permitted Use) for all purposes. By taking possession of the 260 Expansion Space, Tenant shall be deemed to have accepted the 260 Expansion Space and agreed that the 260 Expansion Space is in good order and satisfactory condition, with no representation or warranty by Landlord as to the condition of the 260 Expansion Space or the Building or suitability thereof for Tenant’s use, except as otherwise expressly set forth in the Lease. EXCEPT AS OTHERWISE EXPRESSLY SET FORTH IN THE LEASE, NO WARRANTIES, EXPRESS OR IMPLIED, ARE MADE REGARDING THE CONDITION OR SUITABILITY OF THE 260 EXPANSION SPACE ON THE 260 EXPANSION DATE. FURTHER, TO THE EXTENT PERMITTED BY LAW, TENANT WAIVES ANY IMPLIED WARRANTY OF SUITABILITY OR OTHER IMPLIED WARRANTIES THAT LANDLORD WILL MAINTAIN OR REPAIR THE 260 EXPANSION SPACE OR ITS APPURTENANCES EXCEPT AS MAY BE CLEARLY AND EXPRESSLY PROVIDED IN THE LEASE.

6. Renewal Options. Tenant shall continue to have the option to renew the term of the Lease with respect to only the Current Premises in accordance with the terms of Rider 1 to the Lease, which renewal option is hereby ratified and confirmed. In addition, Tenant shall have the option to renew the term of the Lease with respect to only the 260 Expansion Space in accordance with the terms of Exhibit C attached hereto. If Tenant fails to exercise a renewal option with respect to the Current Premises (or later with respect to the 260 Expansion Space) so that Tenant only leases the 260 Expansion Space (or only the Current Premises), then Landlord and Tenant shall enter into an amendment to the Lease, as amended hereby, to reflect the changes in the Agreed Rentable Area, Tenant’s Pro Rata Share Percentage and other appropriate terms. As an alternative to the renewal options described above, Tenant shall have the right to renew the term of the Lease with respect to all (but not a portion) of both the Current Premises

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and the 260 Expansion Space (the “Expanded Premises Renewal Option”) for a period of five (5) years commencing on February 1, 2015 and expiring on January 31, 2020, subject to and in accordance with the terms of Exhibit D attached hereto. If Tenant is entitled to and properly exercises the Expanded Premises Renewal Option, then Rider 1 to the Lease and Exhibit C attached hereto shall automatically be deleted and of no further force or effect. If Tenant fails to properly exercise the Expanded Premises Renewal Option, then Exhibit D attached hereto shall automatically be deleted and Tenant shall continue to have the renewal options described above with respect to only the Current Premises and with respect to only the 260 Expansion Space, subject to the terms thereof.

7. Termination Option. The Termination Option set forth in Rider 4 to the Lease shall only apply with respect to the Current Premises (notwithstanding anything to the contrary set forth in such Rider 4) and is hereby ratified and confirmed, and Tenant shall have no right under such Rider 4 to terminate the Lease with respect to the 260 Expansion Space. In the event Tenant is entitled to and properly exercises its Termination Option with respect to the Current Premises, Landlord and Tenant shall enter into an amendment to the Lease, as amended hereby, to reflect the changes in the Agreed Rentable Area, Tenant’s Pro Rata Share Percentage and other appropriate terms.

8. Security Deposit. In addition to the Security Deposit currently required under the Lease, Tenant shall pay to Landlord contemporaneously with its execution and delivery of this Amendment the amount of $758,000.00 (the “260 Security Deposit”), which will be held as security for Tenant’s performance of the terms of the Lease, as amended hereby. The 260 Security Deposit shall be subject to all the terms of the Lease applicable to the Security Deposit, including those allowing the Security Deposit to provided in the form of a letter of credit (references to the 260 Security Deposit shall also include references to the letter of credit that Tenant may deliver in lieu of the cash 260 Security Deposit); provided that (i) all provisions providing for the return of the Security Deposit upon the expiration or termination of the Lease shall not apply to the 260 Security Deposit except in connection with the expiration or termination of the Lease with respect to the 260 Expansion Space; and (ii) the 260 Security Deposit shall not be subject to reduction as set forth in the last paragraph of Article 3 of the Lease with respect to the Security Deposit. For example, if the 260 Security Deposit is provided through an increase in the existing Letter of Credit and Tenant is entitled to reduce the Letter of Credit as of the last day of the forty-eighth (48th) Lease Month of the Term as provided in the last paragraph of Article 3 of the Lease, then the amount of such Letter of Credit would reduce to $1,058,000 (i.e. $300,000 for the reduced existing Security Deposit, plus $758,000 for the original 260 Security Deposit).

Notwithstanding anything herein to the contrary, provided Tenant is not in default under the Lease as defined in Section 13.1 of the Lease and with respect to defaults for which Tenant has a notice and cure period, no notice of default has been given as of the effective date of the reduction of the 260 Security Deposit, Tenant shall have the right to reduce the amount of the 260 Security Deposit (but not the original Security Deposit or Letter of Credit) to $258,000.00 effective upon the occurrence of both of (i) and (ii) following: (i) the last day of the thirty-sixth (36th) Expansion Month and (ii) the date upon which Tenant’s audited financial statements shall reflect Tenant having (x) a tangible net worth (as determined in accordance with generally accepted accounting principles) of at least $100,000,000, and (y) cash and cash equivalents in an amount of not less than $50,000,000. In the event Tenant is in default under the Lease as defined in Section 13.1 or with respect to any defaults for which Tenant has a notice and cure period, a

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default notice has been given to Tenant, as of the effective date of the reduction, if any, of the 260 Security Deposit, the same shall not reduce and Tenant shall maintain the 260 Security Deposit in place without reduction. In the event Tenant is maintaining a cash 260 Security Deposit (i.e., if Tenant has not elected to provide a letter of credit in lieu thereof) at the time of a reduction of the 260 Security Deposit as described above, then the excess 260 Security Deposit then held by Landlord shall be returned to Tenant within thirty (30) days after Landlord’s receipt of Tenant’s written request therefor, after deducting any amounts then payable by Tenant. From and after the date Tenant is entitled to a reduction of the 260 Security Deposit as set forth above, Landlord shall not be entitled to draw under the letter of credit evidencing the 260 Security Deposit more than the reduced amount, even if the existing letter of credit held by Landlord has a face amount greater than such reduced amount.

9. Parking. Tenant’s parking rights with respect to the Current Premises shall continue in accordance with the terms of the Lease. In addition, commencing on the 260 Expansion Date and continuing so long as the Lease, as amended hereby, remains in effect with respect to the 260 Expansion Space, Tenant or persons designated by Tenant shall have the right (but not the obligation) to rent (at no additional charge during the initial term and any renewals thereof) on an unreserved and non-exclusive basis parking spaces in or on the roof of the Garage and in the Building parking lot at a ratio of four (4) parking spaces for every 1,000 square feet of Agreed Rentable Area in the 260 Expansion Space. Notwithstanding anything contained in the Lease, except as set forth in the preceding sentence, Tenant shall not be entitled to any additional parking spaces in connection with the addition of the 260 Expansion Space to the Premises under the Lease. Tenant’s use of such additional spaces shall be governed by the terms of the Lease, except as otherwise provided herein.

10. Expansion Options. Tenant acknowledges that the Expansion Space leased by Tenant pursuant to the terms of the Second Amendment is the Expansion Space described in Rider 2 to the Lease, as amended by Section 2 of the First Amendment. Accordingly, Rider 2 to the Lease, as amended by Section 2 of the First Amendment, is hereby deleted in its entirety. The first paragraph of Section A of Rider 3 to the Lease, as amended by Section 3 of the First Amendment, is hereby amended in its entirety to read as follows:

Tenant shall have a right of opportunity (the “Right of Opportunity”) on (i) the space containing 7,408 square feet of Agreed Rentable Area known as Suite 150 on the first (1st) floor of the Building, and (ii) the space containing 7,510 square feet of Agreed Rentable Area known as Suite 200 on the second (2nd) floor of the Building, each as shown on Schedule A attached hereto (each, an “Opportunity Expansion Space”) as provided in this Rider 3. In the event Landlord shall desire to offer all or any portion of the Opportunity Expansion Space for rent, license or any other possessory arrangement with a bona-fide third party, and Landlord shall thereafter receive a counter proposal from a bona-fide third party covering all or any portion of the applicable Opportunity Expansion Space, Landlord shall deliver to Tenant a written statement (the “Statement”) setting forth the terms on which Landlord is willing to lease the entire applicable Opportunity Expansion Space to Tenant, which terms shall reflect the terms which are no worse for Tenant than the terms on which Landlord is willing to lease such space to a bona-fide third party. Tenant may lease the entire (but not a portion of) applicable Opportunity Expansion Space under such terms, by providing Landlord with written notice of exercise (the “Notice of Exercise”) within ten (10) days after the date of the

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Statement, except that Tenant shall have no such right and Landlord need not provide Tenant with an Statement if:

Each reference to the “Opportunity Expansion Space” contained in the remaining provisions of Rider 3 to the Lease shall mean either the Opportunity Expansion Space located on the first (1st) floor of the Building or the Opportunity Expansion Space located on the second (2nd) floor of the Building, as the case may be. Exhibit E attached hereto is hereby added to and incorporated into the Lease as Schedule A of Rider 3 to the Lease. The Opportunity Expansion Space located on the second (2nd) floor of the Building is currently leased to a third party tenant and, notwithstanding anything contained in Rider 3 to the Lease, as amended hereby, Tenant’s Right of Opportunity with respect to the Opportunity Expansion Space located on the second (2nd) floor of the Building is subject and subordinate to the right of the existing tenant leasing such space to extend or renew the term of its lease (whether or not expressly stated as a right in such tenant’s lease).

11. Brokers. Tenant warrants that it has had no dealings with any real estate broker or agent in connection with the negotiation of this Amendment other than The Aleshire Company (“Tenant’s Broker”) and HPI Real Estate and Investments (“Landlord’s Broker”), and that it knows of no other real estate brokers or agents who are or might be entitled to a commission in connection with this Amendment. Landlord agrees to pay a commission to Tenant’s Broker and to Landlord’s Broker pursuant to separate written agreements between Landlord and such brokers. Tenant agrees to indemnify and hold Landlord harmless from and against any liability or claim arising in respect to any brokers or agents claiming a commission by, through, or under Tenant in connection with this Amendment other than Tenant’s Broker. Landlord agrees to indemnify and hold Tenant harmless from and against any liability or claim arising in respect to any brokers or agents claiming a commission by, through, or under Landlord in connection with this Amendment.

12. Defined Terms. Except as defined differently herein, all capitalized terms used in this Amendment shall have the meanings ascribed to them under the Lease.

13. Authority. Tenant represents to Landlord as follows: (i) Tenant is a duly foamed and validly existing corporation under the laws of the State of Delaware, (ii) Tenant has and is qualified to do business in Texas, (iii) Tenant has the full right and authority to enter into this Amendment, and (iv) each person signing on behalf of Tenant was and continues to be authorized to do so.

14. Exhibit. Each exhibit attached hereto is made a part hereof for all purposes.

15. Ratification of Lease. Except as amended hereby, the Lease shall remain in full force and effect in accordance with its terms and is hereby ratified. In the event of a conflict between the Lease and this Amendment, this Amendment shall control.

16. Entire Agreement. This Amendment, together with the Lease, contains all of the agreements of the parties hereto with respect to any matter covered or mentioned in this Amendment or the Lease, and no prior agreement, understanding or representation pertaining to any such matter shall be effective for any purpose.

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17. Successors and Assigns. The terms and provisions hereof shall be binding upon and inure to the benefit of the parties hereto and their respective successors and assigns.

18. Severability. A determination that any provision of this Amendment is unenforceable or invalid shall not affect the enforceability or validity of any other provision hereof and any determination that the application of any provision of this Amendment to any person or circumstance is illegal or unenforceable shall not affect the enforceability or validity of such provision as it may apply to any other persons or circumstances.

19. Governing Law. This Amendment shall be governed by the laws of the State of Texas.

20. Submission of Amendment Not Offer. The submission by Landlord to Tenant of this Amendment for Tenant’s consideration shall have no binding force or effect, shall not constitute an option, and shall not confer any rights upon Tenant or impose any obligations upon Landlord irrespective of any reliance thereon, change of position or partial performance. This Amendment is effective and binding on Landlord only upon the execution and delivery of this Amendment by Landlord and Tenant.

21. Operating Expense Exclusions. Notwithstanding anything to the contrary in the Lease, “Operating Expenses” and “Additional Pass Through Costs” shall not include and Tenant shall have no liability for the following costs and expenses: (a) costs occasioned by casualties or by the exercise of the power of eminent domain, other than insurance deductibles paid by Landlord; (b) costs incurred to bring the Premises or the Building into compliance with any covenant, condition, restriction, underwriter’s requirement or law applicable to the Premises or the Building as of on the Commencement Date of the Lease; and (c) costs incurred in connection with the presence of any hazardous or toxic material, except (i) to the extent caused by the release or emission of the hazardous or toxic material in question by Tenant or (ii) for any such costs related to general maintenance and repair of the Building.

[Signature page follows.]

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IN WITNESS WHEREOF, the parties have executed this Amendment as of the date first above written.

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EXHIBIT A

FLOOR PLAN FOR 260 EXPANSION SPACE

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EXHIBIT B

WORK LETTER

1. Plans.

1.1 Space Plan. Within twenty (20) days after the date of this Amendment, Tenant shall deliver to Landlord a space plan for the 260 Expansion Space prepared by Tenant’s space planner, at Tenant’s expense (subject to reimbursement through the Finish Allowance). Landlord will approve or disapprove in writing the space plan within three (3) business days after receipt from Tenant and if disapproved, Landlord shall provide Tenant and Tenant’s space planner with specific reasons for disapproval. If Landlord fails to approve or disapprove the space plan on or before the end of such three (3) business day period, Landlord shall be deemed to have approved the last submitted space plan. Landlord will not disapprove any element of the space plan that is generally consistent with the improvements and finishes in the Current Premises. The foregoing process shall be repeated until Landlord has approved (which shall include deemed approval) the space plan (such space plan, when approved by Landlord and Tenant, is herein referred to as the “Space Plan”). Landlord shall not unreasonably withhold its approval of the Space Plan.

1.2 Compliance With Disability Acts. Tenant shall provide Tenant’s space planner and/or architect as applicable, with all information needed to cause the construction of Tenant’s Improvements to be completed such that Tenant, the 260 Expansion Space and Tenant’s Improvements (as constructed) will be in compliance with the Disability Acts. Tenant shall indemnify and hold harmless Landlord from and against any and all claims, liabilities and expenses (including, without limitation, reasonable attorney’s fees and expenses) incurred by or asserted against Landlord by reason of or in connection with any violation of the Disability Acts by Tenant and/or Tenant’s Improvements or the 260 Expansion Space not being in compliance with the Disability Acts, except with respect to any non-compliance of the 260 Expansion Space existing on the date of this Amendment. The foregoing indemnity shall not include any claims, liabilities or expenses (including reasonable attorneys’ fees and expenses) arising out of the negligence, gross negligence or willful misconduct of Landlord or Landlord’s employees, agents or contractors.

1.3 Construction Plans. Within forty-five (45) days after written approval (or deemed approval) of the Space Plan by Landlord and Tenant, a licensed architect and MEP engineer selected by Tenant and reasonably acceptable to Landlord, at Tenant’s expense (subject to reimbursement through the Finish Allowance), will prepare construction plans (such construction plans, when approved in writing (or deemed approved) by Landlord and Tenant, and all changes and amendments thereto agreed to by Landlord and Tenant in writing, are herein called the “Construction Plans”) for all of Tenant’s improvements requested pursuant to the Space Plan (all improvements required by the Construction Plans are herein called “Tenant’s Improvements”), including complete detail and finish drawings for partitions, doors, reflected ceiling, telephone outlets, electrical switches and outlets and Building standard heating, ventilation and air conditioning equipment and controls. Within five (5) business days after construction plans are delivered to Landlord, Landlord shall approve (which approval shall not be unreasonably withheld) or disapprove same in writing and if disapproved, Landlord shall provide Tenant and Tenant’s architect specific reasons for disapproval. If Landlord disapproves of the submitted construction plans, Tenant shall cause Tenant’s architect to revise the construction plans to incorporate Landlord’s comments and re-submit the revised construction plans to Landlord

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within five (5) business days after Landlord’s notice of disapproval. Within three (3) business days after the revised construction plans are delivered to Landlord, Landlord shall approve (which approval shall not be unreasonably withheld) or disapprove same in writing and if disapproved, Landlord shall provide Tenant and Tenant’s architect specific reasons for disapproval. The foregoing process shall continue until the construction plans are approved by Landlord; provided that if Landlord fails to respond in the five (5) or any three (3) business day period, as applicable, Landlord shall be deemed to have approved the last submitted construction plans. If the construction plans are not approved in writing (or deemed approved) by both Tenant and Landlord on or before June 24, 2011 for any reason whatsoever, then each day after June 24, 2011 that the construction plans are not approved (or deemed approved) by Landlord and Tenant shall constitute one (1) day of Tenant Delay. Landlord hereby agrees that Landlord shall not be entitled to disapprove construction plans except for the following reasons: (i) the construction plans do not conform to applicable laws, rules and regulations, (ii) the construction plans or specifications will not accommodate Building standard heating, cooling, mechanical, electrical or plumbing improvements, (iii) the construction plans or specifications do not conform to the Space Plan, or (iv) the work required by the construction plans affects the exterior of the 260 Expansion Space or the Building.

1.4 Changes to Approved Plans. If any re-drawing or re-drafting of either the Space Plan or the Construction Plans is necessitated by Tenant’s written, requested changes (all of which shall be subject to approval by Landlord (which approval shall not be unreasonably withheld or delayed) and, if applicable, the Texas Department of Licensing & Regulation and any other governmental agency or authority to which the plans and specifications are required to be submitted), the expense of any such re-drawing or re-drafting required in connection therewith and the expense of any work and improvements necessitated by such re-drawing or re-drafting will be charged to Tenant (subject to reimbursement from the Finish Allowance). Landlord shall not have the right to make changes to the Construction Plans without Tenant’s approval, which approval shall not be unreasonably withheld or delayed.

1.5 Coordination of Planners and Designers. If Tenant shall arrange for interior design services, whether with Landlord’s space planner or any other planner or designer, it shall be Tenant’s responsibility to cause necessary coordination of its agents’ efforts with Landlord’s agents to ensure that no delays are caused to either the planning or construction of the Tenant’s Improvements, and Landlord agrees to reasonably cooperate with Tenant in such regard.

1.6 Contract Selection Process. Promptly following the completion of the Construction Plans, Landlord shall competitively bid the construction of the Tenant’s Improvements to at least three (3) qualified general contractors approved by Landlord, one of which may be selected by Tenant (subject to Landlord’s reasonable approval). The contractor submitting the lowest qualified bid to perform the total construction project associated with Tenant’s Improvements shall be selected, unless otherwise agreed in writing by Landlord and Tenant. Notwithstanding Tenant’s right to approve the general contractor, the general contractor is the contractor only of Landlord and Tenant shall have no liability to the general contractor with respect to the construction contract.

2. Construction and Costs of Tenant’s Improvements.

2.1 Construction Obligation and Finish Allowance.

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2.2 Excess Costs. If the Permitted Costs exceeds the Finish Allowance, then Tenant shall pay all such excess costs (“Excess Costs”), provided, however, Landlord will, prior to the commencement of construction of Tenant’s Improvements, advise Tenant of the sum of the Contract Sum and the Construction Management Fee (the “Cost Estimate”). Tenant shall have five (5) business days from and after the receipt of such advice within which to approve or disapprove the Contract Sum and Cost Estimate. If Tenant fails to approve same by the expiration of the fifth such business day, then Tenant shall be deemed to have approved the Proposed Contract Sum and Cost Estimate. If Tenant disapproves the Contract Sum and Cost Estimate within such five (5) business day period, then Tenant shall either reduce the scope of Tenant’s Improvements such that the Contract Sum and Construction Management Fee do not exceed the Finish Allowance or, at Tenant’s option, Landlord shall obtain two (2) additional bids, provided that each day beyond such five (5) business day period and until the rebid is accepted by Tenant shall constitute a Tenant Delay hereunder. The foregoing process shall continue until a Contract Sum and Cost Estimate are accepted or deemed accepted by Tenant. Landlord and Tenant must approve (or be deemed to have approved) the Contract Sum for the construction of Tenant’s Improvements in writing prior to the commencement of construction.

2.3 Liens Arising from Excess Costs. Tenant agrees to keep the 260 Expansion Space free from any liens arising out of nonpayment of Excess Costs. In the event that any such lien is filed and Tenant, within ten (10) days following Tenant’s receipt of written notice of such filing fails to cause same to be released of record by payment or posting of a proper bond, Landlord shall have, in addition to all other remedies provided herein and by law, the right, but not the obligation, to cause the same to be released by such means as it in its sole discretion deems proper, including payment of or defense against the claim giving rise to such lien. All sums paid by Landlord in connection therewith shall constitute Rent under the Lease and a demand obligation of Tenant to Landlord and such obligation shall bear interest at the rate provided for in Section 15.10 of the Supplemental Lease Provisions from the date of payment by Landlord until the date paid by Tenant.

2.4 Construction Deposit. Tenant shall remit to Landlord an amount (the “Prepayment”) equal to fifty percent (50%) of the projected Excess Costs, if any, within five (5) working days after commencement of construction by Landlord. On or prior to the 260 Expansion Date, Tenant shall deliver to Landlord the actual Excess Costs, minus the Prepayment previously paid. Failure by Tenant to timely tender to Landlord the full Prepayment shall permit Landlord to stop all work until the Prepayment is received. All sums due Landlord under this Section 2.4 shall be considered Rent under the terms of the Lease and nonpayment beyond the applicable notice and cure period shall constitute a default under the Lease and entitle Landlord to any and all remedies specified in the Lease.

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3. Delays. Delays in the completion of construction of Tenant’s Improvements or in obtaining a certificate of occupancy, if required by the applicable governmental authority, caused by the act or omission of Tenant, Tenant’s Contractors (hereinafter defined) or any person, firm or corporation employed by Tenant or Tenant’s Contractors shall constitute “Tenant Delays”. Landlord agrees to use reasonable efforts to promptly notify Tenant of any events causing Tenant Delays of which Landlord has actual knowledge. In the event that Substantial Completion of the Tenant’s Improvements with respect to the 260 Expansion Space is delayed as a result of any Tenant Delays, then for purposes of determining the 260 Expansion Date, the date of Substantial Completion shall be deemed to be the day that the Tenant’s Improvements would have been Substantially Complete absent any such Tenant Delays. The adjustment of the 260 Expansion Date shall be Tenant’s sole and exclusive remedy for any delay in the Substantial Completion of the Tenant’s Improvements. Notwithstanding the foregoing, if the construction plans are approved (or deemed approved) by Landlord and Tenant prior to June 24, 2011, then Tenant shall receive a credit against any Tenant Delays of one day for each day prior to June 24, 2011 on which the construction plans are approved (or deemed approved). By way of example, if the construction plans are approved (or deemed approved) by Landlord and Tenant on June 4, 2011, then Tenant shall have a credit of 20 days to be applied against days which would otherwise constitute days of Tenant Delays.

4. Substantial Completion and Punch List. The terms “Substantial Completion” and “Substantially Complete,” as applicable, shall mean when Tenant’s Improvements are sufficiently completed in accordance with the Construction Plans so that Landlord can obtain a temporary or permanent certificate of occupancy for the 260 Expansion Space and Tenant can reasonably use the 260 Expansion Space for the Permitted Use (as described in Item 10 of the Basic Lease Provisions). When Landlord reasonably considers Tenant’s Improvements to be Substantially Complete, Landlord will notify Tenant and within five (5) business days thereafter, Landlord’s representative and Tenant’s representative shall conduct a walk-through of the 260 Expansion Space and identify any necessary touch-up work, repairs and minor completion items as are necessary for final completion of Tenant’s Improvements. Neither Landlord’s representative nor Tenant’s representative shall unreasonably withhold his agreement on punch list items. Landlord will use reasonable efforts to cause the contractor to complete all punch list items within thirty (30) days after agreement thereon.

5. Tenant’s Contractors. If Tenant should desire to enter the 260 Expansion Space or authorize its agent to do so prior to the 260 Expansion Date, to perform approved work not requested of the Landlord, Landlord shall permit such entry if:

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Landlord shall not be liable for any injury, loss or damage to any of Tenant’s installations or decorations made prior to the 260 Expansion Date and not installed by Landlord. Tenant shall indemnify and hold harmless Landlord and Landlord’s Contractors from and against any and all costs, expenses, claims, liabilities and causes of action arising out of or in connection with work performed in the 260 Expansion Space by or on behalf of Tenant (but excluding work performed by Landlord or Landlord’s Contractors). Landlord is not responsible for the function and maintenance of Tenant’s Improvements which are different than Landlord’s standard improvements at the Property or improvements, equipment, cabinets or fixtures not installed by Landlord. Such entry by Tenant and Tenant’s Contractors pursuant to this Section 5 shall be deemed to be under all of the terms, covenants, provisions and conditions of the Lease except the covenant to pay Rent.

6. Construction Representatives. Landlord’s and Tenant’s representatives for coordination of construction and approval of change orders will be as follows, provided that either party may change its representative upon written notice to the other:

LANDLORD’S REPRESENTATIVE:

TENANT’S REPRESENTATIVE:

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With a copy of notices delivered in connection with this Work Letter to:

7. Building Shell. Notwithstanding anything to the contrary contained herein, Landlord shall be solely responsible (and no part of such work shall be charged as part of the Finish Allowance) and Tenant shall not be obligated to pay for the costs associated with providing the Building shell, which shall include, but not be limited to, the following work:

In addition, notwithstanding anything to the contrary contained herein, Landlord shall be solely responsible (and no part of such work shall be charged as part of the Finish Allowance) for and Tenant shall not be obligation to pay for the following: (a) costs for improvements which are not shown on or described in the Construction Plans unless otherwise approved by Tenant; (b) costs incurred due to the presence of Hazardous Materials in the 260 Expansion Premises or the surrounding area; (c) attorneys’ fees incurred in connection with negotiation of construction contracts, and attorneys’ fees, experts’ fees and other costs in connection with disputes with third parties; (d) interest and other costs of financing construction costs and any costs for construction bonds or similar surety instruments; (e) penalties and late charges attributable to Landlord’s failure to pay construction costs; (f) offsite management or other general overhead costs incurred by Landlord; or (g) construction management, profit and overhead charges of Landlord in excess of Construction Management Fee.

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EXHIBIT C

260 EXPANSION SPACE RENEWAL OPTION

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EXHIBIT D

EXPANDED PREMISES RENEWAL OPTION

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D-3

EXHIBIT E

SCHEDULE A

TO RIDER 3

OPPORTUNITY EXPANSION SPACE

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