Delivery of Letter of Credit. Concurrently with the execution and delivery of this Lease, Tenant shall deliver to Landlord, as protection for the full and faithful performance by Tenant of all of its obligations under this Lease and for all losses and damages Landlord may suffer (or which Landlord reasonably estimates that it may suffer) as a result of any breach or default by Tenant under this Lease, an irrevocable and unconditional negotiable standby letter of credit (the “Letter of Credit”) in an amount of (the “Letter of Credit Amount”), payable upon presentation to an operating retail branch located in the San Francisco Bay Area, running in favor of Landlord and issued by a solvent, nationally recognized bank with assets in excess of Forty Billion Dollars ($40,000,000,000) and with a long term rating from Standard and Poor’s Professional Rating Service of A or a comparable rating from Moody’s Professional Rating Service or higher, under the supervision of the Superintendent of Banks of the State of California. The Letter of Credit shall # be “callable” at sight, irrevocable and unconditional, # be maintained in effect, whether through renewal (pursuant to a so-called “evergreen provision”) or extension, for the period from the Lease Date, until the date (the “LC Expiration Date”) that is sixty (60) days after the Expiration Date, and Tenant shall deliver to Landlord a new Letter of Credit, certificate of renewal or extension amendment at least sixty (60) days prior to the expiration of the Letter of Credit then held by Landlord, without any action whatsoever on the part of Landlord, # be fully transferrable by Landlord, its successors and assigns, # be payable to Landlord, Security Holder or their assignees (the “Beneficiary”); # require that any draw on the Letter of Credit shall be made only upon receipt by the issuer of a letter signed by a purported authorized representative of the Beneficiary certifying that the Beneficiary is entitled to draw on the Letter of Credit pursuant to this Lease; # permit partial draws and multiple presentations and drawings; and # be otherwise subject to the Uniform Customs and Practices for Documentary Credits (2007-Rev) or International Chamber of Commerce Publication #600. In addition to the foregoing, the form and terms of the Letter of Credit and the bank issuing the same (the “Bank”) shall be acceptable to Landlord and Security Holder, in their respective sole discretion. If Landlord notifies Tenant in writing that the Bank which issued the Letter of Credit has become financially unacceptable because the above requirements are not met or the Bank has filed bankruptcy or reorganization proceedings or is placed into a receivership or conservatorship, or the financial condition of the Bank has changed in any other materially adverse way, then Tenant shall have thirty (30) days to provide Landlord with a substitute Letter of Credit complying with all of the requirements of this Paragraph 20. If Tenant does not so provide Landlord with a substitute Letter of Credit within such thirty (30) day period, then Beneficiary shall have the right to draw upon the then current Letter of Credit. In addition to Beneficiary’s rights to draw upon the Letter of Credit as otherwise described in this Paragraph 20, Beneficiary shall have the right to draw down an amount up to the face amount of the Letter of Credit if any of the following shall have occurred or be applicable: # an Event of Default of Tenant has occurred; # an event has occurred which, with the passage of time or giving of notice or both, would constitute an Event of Default of Tenant where Landlord is prevented from, or delayed in, giving such notice because of a bankruptcy or other insolvency proceeding; # this Lease is terminated by Landlord due to an Event of Default by Tenant; # Tenant has filed a voluntary petition under the U.S. Bankruptcy Code or any state bankruptcy code (collectively, “Bankruptcy Code”), # an involuntary petition has been filed against Tenant under the Bankruptcy Code, or # the Bank has notified Landlord that the Letter of Credit will not be renewed or extended through the LC Expiration Date and Tenant has not provided a replacement Letter of Credit that satisfies the requirements of this Paragraph 20 within thirty (30) days prior to the expiration of the Letter of Credit. The Letter of Credit will be honored by the Bank regardless of whether Tenant disputes Landlord’s right to draw upon the Letter of Credit. Tenant shall be responsible for paying the Bank’s fees in connection with the issuance of any Letter of Credit, certificate of renewal or extension amendment.

Delivery of Letter of Credit. Tenant shall deliver to Landlord, within ten (10) business days after Tenant's execution of this Lease, an unconditional, clean, irrevocable letter of credit (the "L-C") in the amount set forth in Section 8 of the Lease Summary (the "L-C Amount"), which L-C shall be issued by a money-center, solvent and nationally recognized bank (a bank which accepts deposits, maintains accounts, has a local San Francisco Bay Area office which will negotiate a letter of credit or will accept draw requests by facsimile, and whose deposits are insured by the FDIC) reasonably acceptable to Landlord (such approved, issuing bank being referred to herein as the "Bank"), which Bank must have a rating from Standard and Poors Corporation of A- or better (or any equivalent rating thereto from any successor or substitute rating service selected by Lessor) and a letter of credit issuer rating from Moody’s Investor Service of [[Unknown Identifier]] or better (or any equivalent rating thereto from any successor rating agency thereto)) (collectively, the "Bank’s Credit Rating Threshold"), and which L-C shall be in the form of Exhibit H, attached hereto. Tenant shall pay all expenses, points and/or fees incurred by Tenant in obtaining the L-C. The L-C shall # be "callable" at sight, irrevocable and unconditional, # be maintained in effect, whether through renewal or extension, for the period commencing on the date of this Lease and continuing until the date (the "L-C Expiration Date") that is no less than sixty (60) days after the expiration of the Lease Term as the same may be extended, and Tenant shall deliver a new L-C or certificate of renewal or extension to Landlord at least thirty (30) days prior to the expiration of the L-C then held by Landlord, without any action whatsoever on the part of Landlord, # be fully assignable by Landlord, its successors and assigns, # permit partial draws and multiple presentations and drawings, and # be otherwise subject to the Uniform Customs and Practices for Documentary Credits (1993-Rev), International Chamber of Commerce Publication #500, or the International Standby Practices-ISP 98, International Chamber of Commerce Publication #590. Landlord, or its then managing agent, shall have the right to draw down an amount up to the face amount of the L-C if any of the following shall have occurred or be applicable: # such amount is due to Landlord under the terms and conditions of this Lease, and has not been paid within applicable notice and cure periods (or, if Landlord is prevented by law from providing notice, within the period for payment set forth in the Lease), or # Tenant has filed a voluntary petition under the U. S. Bankruptcy Code or any state bankruptcy code (collectively, "Bankruptcy Code"), or # an involuntary petition has been filed against Tenant under the Bankruptcy Code that is not dismissed within thirty (30) days, or # the Lease has been rejected, or is deemed rejected, under Section 365 of the U.S. Bankruptcy Code, following the filing of a voluntary petition by Tenant under the Bankruptcy Code, or the filing of an involuntary petition against Tenant under the Bankruptcy Code, or # the Bank has notified Landlord that the L-C will not be renewed or extended through the L-C Expiration Date, and Tenant has not provided a replacement L-C that satisfies the requirements of this Lease at least thirty (30) days prior to such expiration, or # Tenant is placed into receivership or conservatorship, or becomes subject to similar proceedings under Federal or State law, or # Tenant executes an assignment for the benefit of creditors, or # if # any of the Bank's Fitch Ratings (or other comparable ratings to the extent the Fitch Ratings are no longer available) have been reduced below the Bank's Credit Rating Threshold, or # there is otherwise a material adverse change in the financial condition of the Bank, and Tenant has failed to provide Landlord with a replacement letter of credit, conforming in all respects to the requirements of this Article 21 (including, but not limited to, the requirements placed on the issuing Bank more particularly set forth in this Section 21.1 above), in the amount of the applicable L-C Amount, within ten (10) days following Landlord’s written demand therefor (with no other notice or cure or grace period being applicable thereto, notwithstanding anything in this Lease to the contrary) (each of the foregoing being an "L-C Draw Event"). The L-C shall be honored by the Bank regardless of whether Tenant disputes Landlord's right to draw upon the L-C. In addition, in the event the Bank is placed into receivership or conservatorship by the Federal Deposit Insurance Corporation or any successor or similar entity, then, effective as of the date such receivership or conservatorship occurs, said L-C shall be deemed to fail to meet the requirements of this Article 21, and, within ten (10) days following Landlord's notice to Tenant of such receivership or conservatorship (the "L-C FDIC Replacement Notice"), Tenant shall replace such L-C with a substitute letter of credit from a different issuer (which issuer shall meet or exceed the Bank's Credit Rating Threshold and shall otherwise be acceptable to Landlord in its reasonable discretion) and that complies in all respects with the requirements of this Article 21. If Tenant fails to replace such L-C with such conforming, substitute letter of credit pursuant to the terms and conditions of this Section 21.1, then, notwithstanding anything in this Lease to the contrary, Landlord shall have the right to declare Tenant in default of this Lease for which there shall be no notice or grace or cure periods being applicable thereto (other than the aforesaid ten (10) day period). Tenant shall be responsible for the payment of any and all Tenant’s and Bank’s costs incurred with the review of any replacement L-C, which replacement is required pursuant to this Section or is otherwise requested by Tenant. In the event of an assignment by Tenant of its interest in the Lease (and irrespective of whether Landlord's consent is required for such assignment), the acceptance of any replacement or substitute letter of credit by Landlord from the assignee shall be subject to Landlord's prior written approval, in Landlord's reasonable discretion, and the actual and reasonable attorney's fees incurred by Landlord in connection with such determination shall be payable by Tenant to Landlord within ten (10) days of billing.

Delivery of Letter of Credit. Tenant shall deliver to Landlord, within ten (10) business days after Tenant's execution of this Lease, an unconditional, clean, irrevocable letter of credit (the "L‑C XE "L‑C" ") in the amount set forth in Section 8 of the Lease Summary (the "L‑C Amount XE "L‑C Amount" "), which L‑C shall be issued by a money-center, solvent and nationally recognized bank (a bank which accepts deposits, maintains accounts, has a local San Francisco Bay Area office which will negotiate a letter of credit or will accept draw requests by facsimile, and whose deposits are insured by the FDIC) reasonably acceptable to Landlord (such approved, issuing bank being referred to herein as the "Bank XE "Bank" "), which Bank must have a rating from Standard and Poors Corporation of BBB+ or better (or any equivalent rating thereto from any successor or substitute rating service selected by Lessor) and a letter of credit issuer rating from Moody’s Investor Service of [[Unknown Identifier]] or better (or any equivalent rating thereto from any successor rating agency thereto)) (collectively, the "Bank’s Credit Rating Threshold XE "Bank’s Credit Rating Threshold" "), and which L‑C shall be substantially in the form of [Exhibit H], attached hereto (with such commercially reasonable modifications required by the issuing bank as are reasonably approved by Landlord).. Landlord hereby agrees that Silicon Valley Bank is an approved “Bank” as of the date of this Lease. Tenant shall pay all expenses, points and/or fees incurred by Tenant in obtaining the L‑C. The L‑C shall # be "callable" at sight, irrevocable and unconditional, # be maintained in effect, whether through renewal or extension, for the period commencing on the date of this Lease and continuing until the date (the "L‑C Expiration Date XE "L‑C Expiration Date" ") that is no less than sixty (60) days after the expiration of the Lease Term as the same may be extended, and Tenant shall deliver a new L‑C or certificate of renewal or extension to Landlord at least thirty (30) days prior to the expiration of the L‑C then held by Landlord, without any action whatsoever on the part of Landlord, # be fully assignable by Landlord, its successors and assigns, # permit partial draws and multiple presentations and drawings, and # be otherwise subject to the Uniform Customs and Practices for Documentary Credits (1993-Rev), International Chamber of Commerce Publication #500, or the International Standby Practices-ISP 98, International Chamber of Commerce Publication #590. Landlord, or its then managing agent, shall have the right to draw down an amount up to the face amount of the L‑C if any of the following shall have occurred or be applicable: # such amount is due to Landlord under the terms and conditions of this Lease, and has not been paid within applicable notice and cure periods (or, if Landlord is prevented by law from providing notice, within the period for payment set forth in this Lease), or # Tenant has filed a voluntary petition under the U. S. Bankruptcy Code or any state bankruptcy code (collectively, "Bankruptcy Code XE "Bankruptcy Code" "), or # an involuntary petition has been filed against Tenant under the Bankruptcy Code that is not dismissed within thirty (30) days, or # the Lease has been rejected, or is deemed rejected, under Section 365 of the U.S. Bankruptcy Code, following the filing of a voluntary petition by Tenant under the Bankruptcy Code, or the filing of an involuntary petition against Tenant under the Bankruptcy Code, or # the Bank has notified Landlord that the L‑C will not be renewed or extended through the L‑C Expiration Date, and Tenant has not provided a replacement L-C that satisfies the requirements of this Lease at least thirty (30) days prior to such expiration, or # Tenant is placed into receivership or conservatorship, or becomes subject to similar proceedings under Federal or State law, or # Tenant executes an assignment for the benefit of creditors, or # if # any of the Bank's credit ratings have been reduced below the Bank's Credit Rating Threshold, or # the Bank ceases to satisfy the conditions required by this Section 21.1, and Tenant has failed to provide Landlord with a replacement letter of credit, conforming in all respects to the requirements of this Article 21 (including, but not limited to, the requirements placed on the issuing Bank more particularly set forth in this Section 21.1 above), in the amount of the applicable L‑C Amount, within ten (10) days following Landlord’s written demand therefor (with no other notice or cure or grace period being applicable thereto, notwithstanding anything in this Lease to the contrary) (each of the foregoing being an "L‑C Draw Event XE "L‑C Draw Event" "). The L‑C shall be honored by the Bank regardless of whether Tenant disputes Landlord's right to draw upon the L‑C. In addition, in the event the Bank is placed into receivership or

Security Deposit — Letter of Credit. Subtenant shall deliver to Sublandlord concurrently with its execution of this Lease, as security for the performance of Subtenant’s covenants and obligations under this Sublease, an original irrevocable standby letter of credit (the “Letter of Credit”) in the amount of Four Hundred Thousand and 00/100 Dollars ($400,000.00), naming Sublandlord as beneficiary, which Sublandlord may draw upon, without prejudice to any other remedy provided in this Sublease or by law, to cure any default under this Sublease or to satisfy any other loss or damage resulting from Subtenant’s breach under this Sublease. Any such draw on the Letter of Credit shall not constitute a waiver of any other rights of Sublandlord with respect to such default or failure to perform. The Letter of Credit shall be issued by a major commercial bank reasonably acceptable to Sublandlord, have an expiration date not earlier than the sixtieth (60th) day after the Expiration Date (or, in the alternative, have a term of not less than one (1) year and be automatically renewable for an additional one (1) year period unless notice of non-renewal is given by the issuer to Sublandlord not later than sixty (60) days prior to the expiration thereof) and shall provide that Sublandlord may make partial and multiple draws thereunder, up to the face amount thereof. If, at any period while the Letter of Credit is required to be in effect hereunder, the financial condition of the issuing bank materially deteriorates from the financial condition as of the date of Sublandlord’s initial approval of the bank (as evidenced by a material drop in Standard & Poor’s financial services rating for such bank), then Sublandlord may, by written notice to Subtenant, require that Subtenant replace the Letter of Credit with a Letter of Credit issued by a major commercial bank then reasonably acceptable to Sublandlord. In addition, the Letter of Credit shall provide that, in the event of Sublandlord’s assignment or other transfer of its interest in this Sublease, the Letter of Credit shall be freely transferable by Sublandlord, without charge and without recourse, to the assignee or transferee of such interest and the bank shall confirm the same to Sublandlord and such assignee or transferee. The Letter of Credit shall provide for payment to Sublandlord upon the issuer’s receipt of a sight draft from Sublandlord together with a statement by Sublandlord that the requested sum is due and payable from Subtenant to Sublandlord in accordance with the provisions of this Sublease and otherwise be in form and content satisfactory to Sublandlord. If the Letter of Credit has an expiration date earlier than sixty (60) days after the Expiration Date, then throughout the term hereof (including any renewal or extension of the term) Subtenant shall provide evidence of renewal of the Letter of Credit to Sublandlord at least sixty (60) days prior to the date the Letter of Credit expires. If Sublandlord draws on the Letter of Credit pursuant to the terms hereof, Subtenant shall immediately replenish the Letter of Credit or provide Sublandlord with an additional letter of credit conforming to the requirement of this section so that the amount available to Sublandlord from the Letter of Credit provided hereunder is the amount specified above. If Subtenant is not in default at the expiration or termination of this Sublease, within fifteen (15) days thereafter Sublandlord shall return to Subtenant the Letter of Credit then held by Sublandlord, as applicable; provided, however, that in no event shall any such return be construed as an admission by Sublandlord that Subtenant has performed all of its covenants and obligations hereunder. Subtenant hereby unconditionally and irrevocably waives the benefits and protections of California Civil Code Section 1950.7, and, without limitation of the scope of such waiver, acknowledges that Sublandlord may use all or any part of the Letter of Credit or the proceeds thereof to compensate Sublandlord for damages resulting from termination of this Sublease and the tenancy created hereunder (including, without limitation, damages recoverable under California Civil Code Section 1951.2).

In General. If for any reason the amount of the Letter of Credit becomes less than the Letter of Credit Amount, Tenant shall, within ten (10) Business Days thereafter, either provide Landlord with a cash security deposit equal to such difference or provide Landlord with additional letter(s) of credit in an amount equal to the deficiency (or a replacement letter of credit in the total Letter of Credit Amount or an amendment to the existing Letter of Credit to increase the Letter of Credit Amount by the deficiency), and any such additional (or replacement) letter of credit or letter of credit amendments shall comply with all of the provisions of this Paragraph 20, and if Tenant fails to comply with the foregoing, then, notwithstanding anything to the contrary contained in Paragraph 20.1 above, the same shall constitute an incurable default by Tenant under this Lease (without the need for any additional notice and/or cure period). Tenant further covenants and warrants that it will neither assign nor encumber the Letter of Credit or any part thereof and that neither Landlord nor its successors or assigns will be bound by any such assignment, encumbrance, attempted assignment or attempted encumbrance. Without limiting the generality of the foregoing, if the Letter of Credit expires earlier than the LC Expiration Date, Landlord will accept a renewal thereof (such renewal letter of credit to be in effect and delivered to Landlord, as applicable, not later than thirty (30) days prior to the expiration of the Letter of Credit), which shall be irrevocable and automatically renewable as above provided through the LC Expiration Date upon the same terms as the expiring Letter of Credit or such other terms as may be acceptable to Landlord in its reasonable discretion. However, if the Letter of Credit is not timely renewed, or if Tenant fails to maintain the Letter of Credit in the amount and in accordance with the terms set forth in this Paragraph 20, Beneficiary shall have the right to present the Letter of Credit to the Bank in accordance with the terms of this Paragraph 20, and the proceeds of the Letter of Credit may be applied by Landlord against any Rent payable by Tenant under this Lease that is not paid when due (subject to applicable notice and cure periods) and/or to pay for all losses and damages that Landlord has suffered or that Landlord reasonably estimates that it will suffer as a result of any breach or default by Tenant under this Lease (subject to applicable notice and cure periods), including, but not limited to, all damages or rent due upon termination of this Lease pursuant to Section 1951.2 of the California Civil Code. Any unused proceeds shall constitute the property of Landlord and need not be segregated from Landlord’s other assets. Landlord agrees to pay to Tenant within sixty (60) days after the Expiration Date the amount of any proceeds of the Letter of Credit received by Landlord and not applied against any Rent payable by Tenant under this Lease that was not paid when due or used to pay for any losses and/or damages suffered by Landlord (or reasonably estimated by Landlord that it will suffer) as a result of any breach or default by Tenant under this Lease (including, but not limited to, all damages or rent due upon termination of this Lease pursuant to Section 1951.2 of the California Civil Code); provided, however, that if prior to the LC Expiration Date a voluntary petition is filed by Tenant, or an involuntary petition is filed against Tenant by any of Tenant’s creditors, under the Bankruptcy Code, then Landlord shall not be obligated to make such payment in the amount of the unused Letter of Credit proceeds until either all preference issues relating to payments under this Lease have been resolved in such bankruptcy or reorganization case or such bankruptcy or reorganization case has been dismissed.

Within thirty (30) days after the Effective Date of this Lease, Tenant shall deliver to Landlord, and Tenant shall maintain in effect at all times during the Lease Term an irrevocable letter of credit in the amount of Security Deposit Amount which shall be security for the performance by Tenant within any applicable notice or cure period of all of Tenant’s obligations, covenants, conditions and agreements under this Lease, substantially in the form annexed hereto as [Exhibit K] and otherwise reasonably satisfactory to Landlord and issued by a banking corporation reasonably satisfactory to Landlord it being agreed that Silicon Valley Bank is hereby approved for purposes of Tenant’s initial letter of credit hereunder. Any such letter of credit shall have an expiration date no earlier than the first anniversary of the date of issuance thereof and shall (subject to any outside expiration date set forth therein) be automatically renewed from year to year unless the issuer thereof provides notice to Landlord of its intent not to renew the subject letter of credit at least forty-five (45) days prior to the expiration thereof. Tenant shall, throughout the term of this Lease, deliver to Landlord, in the event of the termination of or non-renewal of any such letter of credit, replacement letters of credit in lieu thereof (each such letter of credit and such extensions or replacements thereof, as the case may be, is herein called a “Letter of Credit”) no later than fifteen (15) days prior to the expiration date of the preceding Letter of Credit. Notwithstanding the foregoing, the Letter of Credit may contain a final expiration date which is prior to the scheduled expiration date of this Lease, and in such event Tenant shall deliver a replacement of or amendment to such Letter of Credit no later than fifteen (15) days prior to such final expiration date, and the final Letter of Credit delivered to Landlord pursuant to this Article 21 shall have a final expiration date occurring not earlier than sixty (60) days following the Expiration Date of this Lease. If Tenant shall fail to obtain any replacement of or amendment to a Letter of Credit within any of the applicable time limits set forth in this Article XI, such failure shall constitute an Event of Default and Landlord shall have the right (but not the obligation), at its option, to draw down the full amount of the existing Letter of Credit and retain the same as security hereunder, and notwithstanding such draw by Landlord, Landlord shall retain all other rights and remedies that are available to Landlord under this Lease.

Application of Letter of Credit. Tenant hereby acknowledges and agrees that Landlord is entering into this Lease in material reliance upon the ability of Landlord to draw upon the Letter of Credit upon the occurrence of any breach or default on the part of Tenant under this Lease. If Tenant shall breach any provision of this Lease or otherwise be in default hereunder, in each case beyond applicable notice and cure periods, Landlord may, but without obligation to do so, and without notice to Tenant, draw upon the Letter of Credit, in part or in whole, to cure any breach or default of Tenant and/or to compensate Landlord for any and all damages of any kind or nature sustained or that Landlord reasonably estimates that it will sustain resulting from Tenant’s breach or default, including, but not limited to, all damages or rent due upon termination of this Lease pursuant to Section 1951.2 of the California Civil Code. The use, application or retention of the Letter of Credit, or any portion thereof, by Landlord shall not prevent Landlord from exercising any other right or remedy provided by this Lease or by any Applicable Laws, it being intended that Landlord shall not first be required to proceed against the Letter of Credit, and the use, application or retention of the Letter of Credit shall not operate as a limitation on any recovery to which Landlord may otherwise be entitled. Tenant agrees not to interfere in any way with payment to Landlord of the proceeds of the Letter of Credit, either prior to or following a “draw” by Landlord of any portion of the Letter of Credit, regardless of whether any dispute exists between Tenant and Landlord as to Landlord’s right to draw upon the Letter of Credit. No condition or term of this Lease shall be deemed to render the Letter of Credit conditional to justify the issuer of the Letter of Credit in failing to honor a drawing upon such Letter of Credit in a timely manner. Tenant agrees and acknowledges that # the Letter of Credit constitutes a separate and independent contract between Landlord and the Bank, # Tenant is not a third party beneficiary of such contract, and # in the event Tenant becomes a debtor under any chapter of the Bankruptcy Code, neither Tenant, any trustee, nor Tenant’s bankruptcy estate shall have any right to restrict or limit Landlord’s claim and/or rights to the Letter of Credit and/or the proceeds thereof by application of Section 502(b)(6) of the U.S. Bankruptcy Code or otherwise.