Estoppel. Tenant fails to provide any estoppel certificate after Landlord's written request therefor pursuant to Section 25(e) and such failure shall continue for seven (7) days after Landlord's second written notice thereof to Tenant;

Estoppel. Within ten (10) days after written request by Landlord, Tenant shall deliver an estoppel certificate duly executed (and acknowledged, if required by any lender or by Landlord), substantially in the form attached hereto as Exhibit E, or in such other form as may be acceptable to any such lender, which form may include some or all of the provisions contained in Exhibit E, to any proposed lender, ground lessee, purchaser or Landlord. Tenant’s failure to deliver said statement in such time period shall be an Event of Default hereunder and shall be conclusive upon Tenant that # this Lease is in full force and effect, without modification except as may be represented by Landlord; # there are no uncured defaults in Landlord’s performance and Tenant has no right of offset, counterclaim or deduction against Rent hereunder; and # no more than one month’s Base Rent has been paid in advance.

Each party agrees, at any time and from time to time, as requested by the other party, upon not less than ten (10) days prior notice, to execute and deliver to the other a statement that this Lease is unmodified and in full force and effect (or if there have been modifications that the same is in full force as modified and stating the modifications), certifying the dates to which the Fixed Rent and Additional Rent have been paid, and stating whether If not, to the best knowledge of, the signer, the other party is in default in the performance of any of his obligations under this Lease, and, if so, specifying each such default of which the signer may have knowledge, it being intended that any such statement delivered pursuant hereto may be relied upon by others with whom the party requesting such certificate may be dealing.

Estoppel Certificate. Tenant shall, within 10 business days of written notice from Landlord, execute, acknowledge and deliver a statement in writing in any form reasonably requested by a proposed lender or purchaser, # certifying that this Lease is unmodified and in full force and effect {or, if modified, stating the nature of such modification and certifying that this Lease as so modified is in full force and effect) and the dates to which the rental and other charges are paid in advance, if any, # acknowledging, to Tenant’s actual knowledge, that there are not any uncured defaults on the part of Landlord hereunder, or specifying such defaults if any are claimed, and # setting forth such further information with respect to the status of this Lease or the Premises as may be requested thereon. Any such statement may be relied upon by any prospective purchaser or encumbrancer of all or any portion of the real property of which the Premises are a part. Tenant’s failure to deliver such statement within such time shall, at the option of Landlord, be conclusive upon Tenant that the Lease is in full force and effect and without modification except as may be represented by Landlord in any certificate prepared by Landlord and delivered to Tenant for execution,

Estoppel Certificate. Tenant shall, within ten (10) Business Days’ following written request by Landlord, execute and deliver to Landlord a statement in form reasonably satisfactory to Tenant and Landlord in writing certifying that this Lease is unmodified and in full force and effect and that Tenant has no actual knowledge of any defenses, offsets or counterclaims against its obligations to pay the Fixed Rent and Additional Rent and to perform its other covenants under this Lease (or, if there have been any modifications, that this Lease is in full force and effect as modified and stating the modifications and, if there are any defenses, offsets or counterclaims, setting them forth in reasonable detail), the dates to which the Fixed Rent and Additional Rent and other charges have been paid, and any other matter reasonably requested pertaining to this Lease. Any such statement delivered pursuant to this [subsection 6.1.9] may be relied upon by any prospective purchaser or mortgagee of the Property, or any prospective assignee of such mortgage, but shall not in any way modify this Lease.

Estoppel Certificate. Tenant shall, within 10 business days of written notice from Landlord, execute, acknowledge and deliver a statement in writing in any form reasonably requested by a proposed lender or purchaser, # certifying that this Lease is unmodified and in full force and effect (or, if modified, stating the nature of such modification and certifying that this Lease as so modified is in full force and effect) and the dates to which the rental and other charges are paid in advance, if any, # acknowledging, to the best of Tenant’s knowledge, that there are not any uncured defaults on the part of Landlord hereunder, or specifying such defaults if any are claimed, and # setting forth such further information with respect to the status of this Lease or the Premises as may be reasonably requested thereon. Any such statement may be relied upon by any prospective purchaser or encumbrancer of all or any portion of the real property of which the Premises are a part. If Tenant does not respond within 5 days of a second written request for such statement, Tenant’s failure to deliver such statement within such time shall, at the option of Landlord, be conclusive upon Tenant that the Lease is in full force and effect and without modification except as may be represented by Landlord in any certificate prepared by Landlord and delivered to Tenant for execution.

Estoppel Certificate. Each of Landlord and Tenant shall, at any time and from time to time, but no more frequently than twice per Lease Year, upon receipt of not less than ten (10) Business Days’ prior written request from the other party hereto, furnish an estoppel certificate executed by an appropriate officer with knowledge of the matters set forth therein (an “Estoppel Certificate”) certifying # that this Lease is unmodified and in full force and effect, or that this Lease is in full force and effect as modified and setting forth the modifications; # the Rent and Additional Charges payable hereunder and the dates to which the Rent and Additional Charges payable have been paid; # that the address for notices to be sent to the party furnishing such Estoppel Certificate is as set forth in this Lease (or, if such address for notices has changed, the correct address for notices to such party); # whether or not, to its actual knowledge, such party or the other party hereto is in default in the performance of any covenant, agreement or condition contained in this Lease (together with, back-up calculation and information reasonably necessary to support the determination and calculation of the financial calculations required under this Lease, including, without limitation, the calculation of the Escalation amount and Tenant’s compliance with [Section 23.3]) and, if so, specifying each such default of which such party may have knowledge; # that Tenant is in possession of the Leased Property; and # responses to such other questions or statements of fact as such other party, any ground or underlying landlord, any purchaser or any current or prospective Fee Mortgagee or Permitted Leasehold Mortgagee shall reasonably request. Landlord’s or Tenant’s failure to deliver such statement within such time shall constitute an acknowledgement by such failing party that, to such party’s knowledge, # this Lease is unmodified and in full force and effect except as may be represented to the contrary by the other party; # the other party is not in default in the performance of any covenant, agreement or condition contained in this Lease; and # the other matters set forth in such request, if any, are true and correct. Any such certificate furnished pursuant to this [Article XXIII] may be relied upon by the receiving party and any current or prospective Fee Mortgagee, Permitted Leasehold Mortgagee, ground or underlying landlord or purchaser of the Leased Property. Each Guarantor or Tenant, as the case may be, shall deliver a written notice within ten (10) Business Days of obtaining knowledge of the occurrence of a default hereunder. Such notice shall include a detailed description of the default and the actions such Guarantor or Tenant has taken or shall take, if any, to remedy such default.

Tenant shall at any time and from time to time upon not less than ten (10) business days’ prior notice from Landlord, execute, acknowledge and deliver to Landlord a statement in writing certifying that this Lease is unmodified and in full force and effect (or if there have been modifications, that the same is in full force and effect as modified and stating the modifications), and the dates to which Rent has been paid in advance, if any, stating to Tenant’s knowledge whether or not Landlord is in default in performance of any covenant, agreement, term, provision or condition contained in this Lease and, if so, specifying each such default, and such other facts as Landlord may reasonably request, it being intended that any such statement delivered pursuant hereto may be relied upon by Landlord, any prospective purchaser of the Building or of any interest of Landlord therein, any Mortgagee or prospective Mortgagee thereof, any lessor or prospective lessor thereof, any lessee or prospective lessee thereof, or any prospective assignee of any mortgage thereof. Time is of the essence with respect to any such requested certificate, Tenant hereby acknowledging the importance of such certificates in mortgage financing arrangements, prospective sales and the like.

Tenant shall at any time and from time to time upon not less than ten (10) days’ prior notice from Landlord, execute, acknowledge and deliver to Landlord a statement in writing certifying that this Lease is unmodified and in full force and effect (or if there have been modifications, that the same is in full force and effect as modified and stating the modifications), and the dates to which Rent has been paid in advance, if any, stating whether or not Landlord is in default in performance of any covenant, agreement, term, provision or condition contained in this Lease and, if so, specifying each such default, and such other facts as Landlord may reasonably request, it being intended that any such statement delivered pursuant hereto may be relied upon by Landlord, any prospective purchaser of the Building or of any interest of Landlord therein, any Mortgagee or prospective Mortgagee thereof, any lessor or prospective lessor thereof, any lessee or prospective lessee thereof, or any prospective assignee of any mortgage thereof. Time is of the essence with respect to any such requested certificate, Tenant hereby acknowledging the importance of such certificates in mortgage financing arrangements, prospective sales and the like. If Tenant shall fail to execute and deliver to Landlord any such statement within such ten-day period, Tenant hereby appoints Landlord as Tenant’s attorney-in-fact in its name and behalf to execute such statement, such appointment being coupled with an interest.

ESTOPPEL CERTIFICATES. Within ten (10) business days following a request in writing by Landlord, Tenant shall execute, acknowledge and deliver to Landlord an estoppel certificate, which, as submitted by Landlord, shall be substantially in the form of Exhibit D, attached hereto (or such other form as may be reasonably required by any prospective mortgagee or purchaser of the Project, or any portion thereof), indicating therein any exceptions thereto that may exist at that time, and shall also contain any other information reasonably requested by Landlord or Landlord's mortgagee or prospective mortgagee. Any such certificate may be relied upon by any prospective mortgagee or purchaser of all or any portion of the Project. Tenant shall execute and deliver whatever other instruments may be reasonably required for such purposes. At any time during the Lease Term, in connection with a sale or financing of the Building by Landlord, Landlord may require Tenant to provide Landlord with its most recent annual financial statement and annual financial statements of the preceding two (2) years, if Tenant is not at the time of Landlord’s request publicly listed on a nationally-recognized stock exchange or market. Such statements shall be prepared in accordance with generally accepted accounting principles and, if such is the normal practice of Tenant, shall be audited by an independent certified public accountant. Landlord shall hold such statements confidential. Failure of Tenant to timely execute, acknowledge and deliver such estoppel certificate or other instruments shall constitute an acceptance of the Premises and an acknowledgment by Tenant that statements included in the estoppel certificate are true and correct, without exception.