SUB-SUBLEASE AGREEMENT

THIS SUB-SUBLEASE AGREEMENT (this “Sub-Sublease”) is made and entered into as of the 14th day of July, 2016, by and between (i) ROSETTA STONE LTD., a Virginia corporation (“Sub-Sublandlord”) and (ii) Snagajob.com, Inc., a Delaware corporation, (“Sub-Subtenant”).

A.    Paramount Group, Inc. (as successor in interest to Waterview, L.P.) (“Landlord”) and the Corporate Executive Board Company (“Tenant”) are parties to that certain Deed of Lease dated as of August 16, 2004 (“Prime Lease”), pursuant to which Tenant leases floors 4 - 24 (the “Prime Lease Premises”) in the building located at 1919 North Lynn Street, Arlington, Virginia, (the “Building”), at the rent and subject to the terms and conditions set forth in the Prime Lease; and

B.    Tenant (as “Sublandlord”) and Rosetta Stone Ltd. (as “Subtenant”) are parties to that certain Sublease Agreement dated as of October 6, 2008 (the “Original Sublease”), as amended by First Amendment to Sublease Agreement dated November 1, 2012 (the “First Amendment to Sublease,” and, together with the Original Sublease, the “Sublease”), pursuant to which Subtenant subleases a portion of the Prime Lease Premises consisting of the entire rentable area of the 6^th and 7^th floors of the Building (the “Subleased Premises”) from Sublandlord; and

C.    Subtenant (as “Sub-Sublandlord”) desires to sub-sublease to Sub-Subtenant, and Sub-Subtenant desires to sub-sublease from Sub-Sublandlord a portion of the Subleased Premises consisting of the entire rentable area of the seventh (7th) floor of the Building (the “Sub-Subleased Premises”), containing approximately 31,281 rentable square feet as more particularly described in Exhibit D, upon the terms and conditions set forth herein.

NOW THEREFORE, in consideration of the mutual covenants set forth herein, the parties hereto agree as follows:

1.Recitals: Incorporation of Terms. The foregoing recitals, and, subject to Section 6 hereof, the terms and provisions of the Sublease, are incorporated herein by reference and are made a substantive part of this Sub-Sublease. Capitalized terms not defined herein shall have the meanings ascribed to such terms in the Sublease (and if not defined therein, then in the Prime Lease). This Sub-Sublease is subject and subordinate to the Sublease and the Prime Lease in all respects, unless otherwise stated herein. For all purposes under this Sub-Sublease, the rentable area of the Sub-Subleased Premises is hereby stipulated and agreed to be 31,281 rentable square feet, the rentable area of the Sublease Premises is stipulated and agreed to be 62,562 rentable square feet and the rentable area of the Building is hereby stipulated and agreed to be 625,062 rentable square feet,

which rentable areas shall not be subject to further calculation, except in the event of a change in the physical size of any such space.

2.    Sub-Subleased Premises.

(a)    Sub-Sublease; Condition of Sub-Subleased Premises. As of the Sub-Sublease Commencement Date (defined in Section 3 below), Sub-Sublandlord shall sub-sublease to Sub-Subtenant and Sub-Subtenant shall sub-sublease from Sub-Sublandlord, the Sub-Subleased Premises upon the terms and conditions set forth herein. Sub-Sublandlord shall tender possession of the Sub-Subleased Premises to Sub-Subtenant on the Sub-Sublease Commencement Date, vacant of occupants on the Sub-Sublease Commencement Date, with the removal, reconfiguration, and other work described in subsections (b), (c) and (e) below completed, and otherwise in broom-clean condition. Sub-Subtenant has fully inspected the Sub-Subleased Premises and, subject to Sub-Sublandlord’s removal and reconfiguration obligations set forth in subsections (b) and (c) below, Sub-Subtenant shall accept the Sub-Subleased Premises in its “as is,” “where-is” condition as of the date hereof, including without limitation all mechanical, electrical and plumbing systems servicing the Sub-Subleased Premises. Sub-Subtenant acknowledges that, except as specifically set forth in this Sub-Sublease, no representations, statements or warranties, express or implied, have been made by or on behalf of Sub-Sublandlord with respect to the condition of the Sub-Subleased Premises or the Building, and that Sub-Sublandlord has made no representation, statement or warranty as to the leasing of any personal property, fixtures, or equipment in the Sub-Subleased Premises other than the Walls/Partitions, Systems Furniture, Personal Property and Supplemental HVAC (as each such term is defined below).

(b)    Systems Furniture and Modular Walls/Partitions. The configuration of the Sub-Subleased Premises shall include modular walls and partitions, approximately as shown on Exhibit B-l, attached hereto, (“Walls/Partitions”) and office systems furniture also shown on Exhibit B-l, attached hereto (“Systems Furniture”). Sub-Subtenant shall have the right to use the Walls/Partitions and Systems Furniture as part of the Sub-Subleased Premises at no additional charge, subject to the conditions hereof; provided, however, Subl-Sublandlord agrees to remove any Systems Furniture or Walls/Partitions or Personal Property (hereinafter defined) designated by Sub-Subtenant , all at Sub-Sublandlords’ sole cost and expense. Sub-Subtenant shall be present to designate such items for removal on the day that Sub-Sublandlord moves out of the Subleased Premises. If not insured by the Sublandlord, Sub-Subtenant shall insure the Walls/Partitions and Systems Furniture under the special cause of loss business property insurance required by Section 17.A.(1) of the Prime Lease, naming Tenant as loss payee under such policy for the Walls/Partitions and Systems Furniture. Provided that Sub-Subtenant receives the prior written consent of Sublandlord and Sub-Sublandlord, Sub-Sublandlord’s consent not to be unreasonably withheld, conditioned or delayed, Sub-Subtenant shall have the right to perform modifications to the Wall/Partitions and/or Systems Furniture in accordance with Section 2(b) of the Sublease.

(c)    Office Furniture. In consideration for the rents and other promises contained in this Sub-Sublease, Sub-Sublandlord shall sub-sublease to Sub-Subtenant (and Sub-Subtenant shall sub-sublease from Sub-Sublandlord) the furniture and equipment listed on Exhibit B-2 attached hereto (the “Personal Property”) at no extra cost or expense to Sub-Subtenant. Sub-Sublandlord shall remove any furniture and equipment located in the Sub-Sub-Subleased Premises in excess of that set forth on Exhibit B-2 prior to the Sub-Sublease Commencement Date and any items designated by Sub-Subtenant for removal on the day that Sub-Sublandlord moves out of the Sub-Subleased Premises shall be removed within three (3) business days thereafter. The parties hereby agree to amend and replace Exhibit B-2 promptly following such date that Sub-Sublandord surrenders the Sub-Subleased Premises to Sub-Subtenant. Sub-Sublandlord represents and warrants that Sublandlord is the owner of the Personal Property, except as indicated in Exhibit B-2; however Sub-Sublandlord has full authority to sub-sublease such Personal Property to Sub-Subtenant. Sub-Subtenant shall not have the right to remove all or any Personal Property from the Sub-Subleased Premises and hereby agrees to return the Personal Property to Sub-Sublandlord at the end of the Sub-Sublease Term in substantially the same condition as of the date hereof, normal wear and tear and damage from casualty excepted, and Sub-Subtenant shall make any necessary repairs or restoration to such Personal Property in the event such damage or restoration is required as a result of the negligent or willful misuse thereof by Sub-Subtenant. Unless insured by Sublandlord, Sub-Subtenant shall be responsible to insure the Personal Property under the special cause of loss business property insurance required by Section 17.A.(1) of the Prime Lease, naming Tenant as loss payee under such policy for the Personal Property.

(d)    Supplemental HVAC. As of the date hereof, the Sub-Subleased Premises contains and/or is served by supplemental HVAC equipment as set forth on Exhibit B-3 (“Supplemental HVAC”). Sub-Subtenant shall have the right to use the Supplemental HVAC under the terms and conditions hereinafter set forth. Sub-Sublandlord makes no representation or warranty as to the capacity or output of the Supplemental HVAC or to its sufficiency to service Sub-Subtenant’s particular requirements in the Sub-Subleased Premises, and Sub-Subtenant acknowledges that the Supplemental HVAC equipment is in its "as is, where is" condition. Sub-Subtenant shall reimburse Sub-Sublandlord from time to time, within thirty (30) days after invoice therefor, all costs for use of the Supplemental HVAC actually incurred by Sub-Sublandlord pursuant to invoice from Sublandlord, including, without limitation, costs for electricity and chilled water or condenser water (including any costs for depreciation charged by Landlord as set forth below) serving the Supplemental HVAC for use in the Sub-Sublease Premises. Sub-Sublandlord shall not be required, under any circumstance, to replace the Supplemental HVAC servicing the Sub-Subleased Premises or to perform repairs or maintenance thereto, but shall use commercially reasonable efforts to cause Sublandlord to require the services covered under Supplement HVAC service contract to be performed. Sub-Subtenant shall have no responsibility to replace the Supplemental HVAC or to perform repairs or maintenance thereto.

3.    Term.

(a)    Sub-Sublease Term. The term of this Sub-Sublease (the “Sub-Sublease Term”) shall commence on October 15, 2016 (the “Sub-Sublease Commencement Date”) and shall expire at midnight on December 15, 2018 (the “Sub-Sublease Expiration Date”), unless sooner terminated or cancelled in accordance with the terms of this Sub-sublease. If Sub-Sublandlord has not tendered possession of the Sub-Subleased Premises to Sub-Subtenant on or before October 15, 2016, then Sub-Subtenant, at its sole discretion, shall have the right to terminate this Sub-Sublease by delivering written notice of such termination to Sub-Sublandlord any time before October 31, 2016. There shall be no fee, payment, penalty or other sum due from Sub-Subtenant in connection with Sub-Subtenant’s exercise of its termination right in this Section 3(a). Notwithstanding anything contained herein to the contrary, the October 15, 2016 date set forth above shall be extended one day for each day that Sub-Sublandlord is delayed in delivering the Sub-Subleased Premises to Sub-Subtenant due to actions of Sublandlord, it employees, agents, or contractors or Sub-Subtenant or due to casualty or Unavoidable Delay.

(b)    Early Entry. Provided no Default by Sub-Subtenant then exists, from and after the date that is fifteen (15) days immediately prior to the Sub-Sublease Commencement Date (such period, the “Early Access Period”), Sub-Subtenant shall be permitted to access the Sub-Subleased Premises (subject to the provisions of this subsection (b)) for purposes of inspecting same, surveying requirements, moving and performing any move-related tasks, including installing furniture, fixtures, equipment, voice and data systems, telecommunications cabling and wiring in the Sub-Subleased Premises (subject to the provisions of this Sub-Sublease, including, without limitation, Section 7 of this Sub-Sublease). Such access to the Sub-Subleased Premises shall be subject to commercially reasonable prior notice to and prompt approval by Sub-Sublandlord (each of which notice and approval may be telephonic or by email correspondence), and shall be at no charge to Sub-Subtenant, but in no event shall Sub-Subtenant be permitted to commence business operations in the Sub-Subleased Premises prior to the Sub-Sublease Commencement Date without the approval of Sub-Sublandlord. Sub-Sublandlord shall use reasonable efforts to assist with the coordination of Sub-Subtenant’s access to the Building and the Sub-Subleased Premises, such assistance shall specifically include coordination with the Building’s property manager. Notwithstanding the foregoing, neither Sub-Subtenant nor any agent, contractor, representative, employee or invitee of Sub-Subtenant (collectively, “Invitee”) shall enter the Sub-Subleased Premises during the Early Access Period during those times that Sub-Sublandlord determines, in its reasonable discretion, that such entry will substantially interfere with activities of Sub-Sublandlord or Sub-Sublandlord’s agents or employees in the Sub-Subleased Premises. Prior to each such event, Sub-Sublandlord shall notify Sub-Subtenant of specific times during which Sub-Subtenant may make such entry. During the Early Access Period, Sub-Subtenant and any of its Invitees shall use commercially reasonable efforts to neither delay nor otherwise inhibit the work being performed in the Sub-Subleased Premises by Sub-Sublandlord or Sub-Sublandlord’s agents

or employees. Sub-Sublandlord shall have no responsibility with respect to any items placed in the Sub-Subleased Premises by Sub-Subtenant or any Invitee prior to the Sub-Sublease Commencement Date, except to the extent any damage is caused to such property due to Sub-Sublandlord’s gross negligence or willful misconduct. Sub-Subtenant shall reimburse Sub-Sublandlord, within thirty (30) days after invoice, all costs actually incurred by Sub-Sublandlord associated with Sub-Subtenant’s access during the Early Access Period, including (i) costs which are billed to Sub-Sublandlord by Sublandlord, including, without limitation, engineering charges or overtime/extra hours service charges associated with non-business hour access to the Building, if any, and (ii) reasonable costs incurred by Sub-Sublandlord in repairing or replacing any damage to the Sub-Subleased Premises required to be repaired by Sublandlord under the Sublease or (iii) reasonable costs incurred by Sub-Sublandlord in repairing or replacing damage to any property or equipment located therein and required to be repaired by Sublandlord under the Sublease, which damage, in the case of (ii) and (iii) above, was caused by Sub-Subtenant or its Invitees. Notwithstanding anything in this Sub-Sublease to the contrary, all of the provisions of this Sub-Sublease (including, without limitation, all insurance, indemnity and utility provisions) shall apply during the Early Access Period, except that during such period Sub-Subtenant shall not be obligated to pay Rent.

(c)    Extension Option. Provided that Sub-Subtenant elects to enter into a direct lease with Landlord, then, at Sub-Subtenant’s election, the Sub-Sublease Extension Date shall be extended to December 31, 2018 upon the same terms and conditions set forth herein.

4.    Rent.

(a)    Base Sub-Subrent. Beginning on the Sub-Sublease Commencement Date, and throughout the Sub-Sublease Term, Sub-Subtenant shall pay to Sub-Sublandlord, as base sub-subrent hereunder, an annual rental (“Annual Base Sub-Subrent”) for each Sub-Sublease Year in an amount set forth below, which Annual Base Sub-Subrent shall increase as set forth below. For all purposes of this Sub-Sublease, the term “Sub-Sublease Year” shall mean, with respect to the first Sub-Sublease Year, the period commencing on the Sub-Sublease Commencement Date and ending at midnight on the day immediately before the first anniversary of the Sub-Sublease Commencement Date, and, with respect to future Sub-Sublease Years, the one year periods ending on the anniversary of such date thereafter. Annual Base Sub-Subrent through the Sub-Sublease Term shall be as follows:

(b)    Subrent Payments. The Annual Base Sub-Subrent for each Sub-Sublease Year shall be payable by Sub-Subtenant to Sub-Sublandlord in equal monthly installments in advance; provided, however, in lieu of payment to Sub-Sublandlord, such payments shall be made directly to Sublandlord by Sub-Subtenant, following prior written notice to Sub-Subtenant signed by both Sublandlord and Sub-Sublandlord, if and to the extent required pursuant to the Consent (defined in Section 23 hereof). All payments of Annual Base Sub-Subrent shall be due and payable on the first day of each and every calendar month during the Sub-Sublease Term. Sub-Subtenant’s obligation to pay Annual Base Sub-Subrent hereunder that accrues during the Sub-Sublease Term shall survive the expiration or earlier termination of this Sub-Sublease. In the event that the Sub-Sublease Term commences on a date other than the first day of a calendar month or expires on a day other than the last day of a calendar month, Annual Base Sub-Subrent owed for less than a full month shall be prorated on the basis of a 30-day month. Notwithstanding anything herein to the contrary, the first three (3) full calendar months’ installments of Annual Base Sub-Subrent shall be abated (e.g. if the Sub-Sublease Commencement Date is October 15, 2016, the monthly installment of Annual Base Sub-Subrent shall be abated for November 2016, December 2016 and January 2017).

(c)    Additional Sub-Subrent. For purposes hereof “Additional Sub-Subrent” means all other amounts (other than Annual Base Sub-Subrent) payable by Sub-Subtenant to Sub-Sublandlord pursuant to this Sub-Sublease, including, without limitation, costs arising from Sub-Subtenant’s use of the Supplemental HVAC for servicing the Sub-Subleased Premises or electrical usage or costs incurred by Sub-Sublandlord under the Sublease arising or resulting from Sub-

Subtenant’s use of the Sub-Subleased Premises, including Sub-Subtenant’s payment obligations pursuant to Section 10 below. Annual Base Sub-Subrent hereunder shall be gross rent, such that Sub-Subtenant shall not be responsible to pay any pass-through expense rental in connection with this Sub-Sublease, such as those in Sections 5 B. and C of the Prime Lease and the Pass-Through Expense Rental (as defined in the Sublease) which includes both Operating Expenses and Real Estate Tax Expenses. Sub-Sublandlord shall continue to be responsible at its sole cost and expense to pay all such Pass-Through Expense Rental required under the Sublease, including Pass-Through Expense Rental for the Sub-Subleased Premises. “Rent” as used herein shall mean Annual Base Sub-Subrent and Additional Sub-Subrent.

5.    Permitted Use; Access. The Sub-Subleased Premises shall be used by Sub-Subtenant only for general office use and uses ancillary thereto in accordance with all applicable Laws and for no other purpose, except as may be permitted by Sublandlord and the Prime Lease to the contrary. Subject to the provisions of the Prime Lease and this Sublease, Sub-Sublandlord shall not interfere with Sub-Subtenant’s accessing the Sub-Subleased Premises in accordance with Section 12.A.(7) of the Prime Lease. Unless a longer time period is required pursuant to the terms of the Sublease or Prime Lease, Sub-Sublandlord shall not access the Sub-Subleased Premises unless Sub-Sublandlord has provided Sub-Subtenant at least twenty-hour (24) hours’ advance written notice (except in case of emergency).

6.    Compliance with Sublease.

(a)    Obligations under the Sublease. Sub-Subtenant hereby acknowledges that it has read the Sublease, a true, correct and complete copy of which is attached hereto as Exhibit C and, except as set forth below, such Sublease is incorporated herein by reference as fully as if the terms and provisions thereof were set forth herein. Sub-Subtenant agrees to assume the same responsibilities and duties that the Sub-Sublandlord has as “Subtenant” to the Sublandlord with respect to the Sub-Subleased Premises, excepting matters relating to the identification of the Sub-Subleased Premises, and the amount and due dates of the rentals payable therefor, and other excluded or modified terms set forth herein provided, however, in no event shall Sub-Sublandlord be deemed to have assumed the responsibilities of the Sublandlord under the Sublease, unless such responsibilities have been expressly assumed herein. Notwithstanding the foregoing, upon the written request of Sub-Subtenant, Sub-Sublandlord agrees to use commercially reasonable efforts to enforce its rights under the Sublease against Sublandlord with respect to the Sub-Subleased Premises. Sub-Subtenant shall have the right, at Sub-Subtenant’s sole cost and expense, to obtain consents, approvals and waivers directly from Sublandlord, and shall have the right to contact Sublandlord directly for enforcement of obligations of Sublandlord with respect to the Sublease so long as the obligations of Sub-Sublandlord as Subtenant under the Sublease are not increased by any of the foregoing and Sub-Sublandlord does not incur any additional costs or expenses under the Sublease resulting therefrom (or Sub-Subtenant agrees to reimburse Sub-Sublandlord for such

costs or expenses). If both Sublandlord’s and Sub-Sublandlord’s consent, approval or waiver are required pursuant to the terms of this Sub-Sublease and there are additional costs and expenses in connection with Sublandlord’s consent, approval or waiver, Sub-Sublandlord shall not charge Sub-Subtenant any additional amount in connection with its request for consent, approval or waiver.

(b)    Incorporation of Sublease Provisions. In furtherance of the provisions of Section 6(a), except as otherwise specifically provided for herein and to the extent they are not inconsistent with the terms and conditions of this Sub-Sublease, the sub-subletting effected hereby shall be upon all of the terms and conditions of the letting effected by the Sublease, except the provisions of the Sublease relating to “Sublandlord” shall be deemed to refer to Sub-Sublandlord, the provisions thereof relating to “Subtenant” shall be deemed to refer to Sub-Subtenant, the provisions of the Sublease relating to the Sublet Premises (as defined in the Sublease) shall be deemed to refer to the Sub-Subleased Premises, the provisions of the Sublease referring to the Sublease shall be deemed to refer to this Sub-Sublease, and the provisions of the Sublease relating to “Rent” shall be deemed to refer to Annual Base Sub-Subrent and Additional Sub-Subrent (unless, in any of the foregoing cases, the context otherwise requires). The foregoing notwithstanding, the following provisions of the Sublease shall not be applicable to this Sub-Sublease (except for the definitions contained therein): Section 4, 5, 7, 8, 11 (except for the requirements of the Letter of Credit), 12, 13, 15, and 16. With respect to the relationship between the Sub-Sublandlord and the Sub-Subtenant, the express terms and conditions of the Sub-Sublease shall govern (and where the Sub-Sublease is silent, the Sublease shall govern). If Sublandlord shall default in the performance of any of its covenants or obligations under the Sublease, Sub-Subtenant shall have the right, in the name of Sub-Sublandlord, to make any demand or institute any action or proceeding at law or in equity or otherwise against Sublandlord permitted under the Sublease for the enforcement of Sublandlord’s obligations or covenants under the Sublease.

(c)    Avoidance of Sublease Termination. Sub-Sublandlord and Sub-Subtenant each shall take no action or permit anything to be done which would cause a termination of the Prime Lease or the Sublease (provided that Sub-Sublandlord shall be entitled to terminate the Sublease pursuant to Section 9 of the Sublease in connection with the exercise of its rights following any condemnation or casualty affecting the Sub-Subleased Premises). Each of Sub-Sublandlord and Sub-Subtenant shall indemnify, defend and hold the other harmless from and against any loss, cost, damage or expense (including, without limitation, court costs and reasonable attorneys’ fees) incurred as a result of a breach by Sub-Sublandlord or Sub-Subtenant, as the case may be, of the foregoing covenant. Without limiting any other right or remedy of Sub-Subtenant, if Sublandlord seeks to terminate the Sublease in connection with the default or alleged default by Sub-Sublandlord (or Subtenant under the Sublease), Sub-Sublandlord shall take all action required to maintain the Sublease in full force and effect for the benefit of Sub-Subtenant, and Sub-Sublandlord shall take all action required to reinstate the Sublease.

(d)    Actions Requiring Sublandlord Consent. Whenever Sub-Subtenant desires to take any action that would require the consent of Sublandlord under the Sublease, Sub-Subtenant shall only take such action if the consent of each of Sublandlord and Sub-Sublandlord is obtained, which consent, in the case of Sub-Sublandlord, shall automatically be deemed obtained if consented to by Sublandlord so long as the obligations of Sub-Sublandlord as Subtenant under the Sublease are not increased by any of the foregoing and Sub-Sublandlord does not incur any additional costs or expenses under the Sublease resulting therefrom (or Sub-Subtenant agrees to reimburse Sub-Sublandlord for such costs or expenses).

7.    Alterations, Electrical Usage.

(a)    Alterations.

(i)    Sub-Subtenant shall not make or permit to be made any alterations, additions, improvements, or modifications to the Sub-Subleased Premises (an “alteration”) without (i) the prior written consent of Sub-Sublandlord and Sublandlord, the latter’s consent to be deemed granted in accordance with Section 6(d) above or, if Section 6(d) is not applicable, such consent not to be unreasonably withheld, conditioned or delayed, and (ii), to the extent required by the Prime Lease, the prior written consent of Landlord. If the alteration is a Cosmetic Alteration, then Sub-Sublandlord’s consent shall not be required (but Sub-Subtenant shall notify Sub-Sublandlord of such alteration). A “Cosmetic Alteration” is an alteration that is (i) cosmetic in nature (e.g., painting, wallcoverings, carpeting, hanging of artwork, and the like), and (ii) does not require a building permit to perform. If the alteration is other than a Cosmetic Alteration, then Sub-Sublandlord’s consent shall be required, which consent shall not be unreasonably withheld, conditioned or delayed (and which consent shall be deemed obtained if no response is made by Sub-Sublandlord to Sub-Subtenant’s request for consent within ten (10) days after Sub-Subtenant’s delivery of such written request to Sub-Sublandlord). Any alterations shall be made at Sub-Subtenant’s expense, in a good and workmanlike manner by contractors and subcontractors approved by Sublandlord, and, if required by the Prime Lease, by Landlord, provided, however, with respect to alterations affecting the Walls/Partitions or Systems Furniture, Sub-Subtenant shall use contractors, subcontractors and vendors designated by Sublandlord. All alterations shall be made only after Sub-Subtenant: (i) has obtained all necessary permits from governmental authorities having jurisdiction and has furnished copies thereof to Sublandlord, and (ii) has complied with all other requirements reasonably imposed by Sublandlord, including without limitation any requirements due to the underwriting guidelines of Sublandlord’s insurance carriers. At Sub-Subtenant’s expense, Sub-Sublandlord shall join in submitting Sub-Subtenant’s plans for any necessary governmental approval, if required by applicable law. Sub-Sublandlord’s consent (or deemed consent) to any alterations and approval (or deemed approval) of any plans and specifications constitutes approval of no more than the concept of these alterations and not a representation or warranty with respect to the quality or functioning of such alterations, plans and specifications. Sub-Subtenant shall reimburse Sub-Sublandlord any

charge actually incurred by Sub-Sublandlord by invoice from Sublandlord in connection with any alteration performed by or on behalf of Sub-Subtenant hereunder, and Sub-Sublandlord shall not charge Sub-Subtenant any amount in addition thereto. Sub-Subtenant hereby agrees to indemnify and hold Sub-Sublandlord harmless against and from any and all claims, damages, costs, and fines arising solely out of the alterations performed by or on behalf of Sub-Subtenant hereunder, except to the extent caused by the negligence or willful misconduct of Sub-Sublandlord or anyone acting by or through Sub-Sublandlord.

(ii)    All alterations performed by or on behalf of Sub-Subtenant shall remain in place at the end of the Sub-Sublease Term unless Sublandlord requires removal of same in writing, in which event, Sub-Subtenant shall be responsible to restore those portions of the Sub-Subleased Premises altered by Sub-Subtenant that are required to be restored by Sublandlord, at Sub-Subtenant’s sole cost and expense on or prior to the end of the Sub-Sublease Term (including any early termination thereof). Unless Sublandlord requires removal of any or all alterations performed by or on behalf of Sub-Subtenant, Sub-Subtenant shall have no obligation to remove the same. Upon written request from Sub-Subtenant to Sub-Sublandlord, as permitted under Section 8(B) of the First Amendment to Sublease, Sub-Sublandlord shall promptly request Sublandlord’s determination of the restoration or removal of Walls/Partitions and Systems Furniture proposed by Sub-Sublandlord to be modified in accordance with the provisions of this Sub-Sublease, by delivering written request of such determination to Sublandlord, accompanied by a set of plans and specifications showing the proposed modifications (including identifying items that will be removed or altered). Sub-Sublandlord shall use commercially reasonable efforts to enforce its right under the Sublease to cause Sublandlord to respond within ten (10) business days following receipt of Sub-Sublandlord’s written request for Sublandlord’s determination (together with the plans and specifications regarding the proposed modification) as to whether Sublandlord will require the restoration or removal of the proposed modifications to the Walls/Partitions and/or Systems Furniture. Sublandlord’s determination shall be promptly delivered to Sub-Subtenant after Sub-Sublandlord’s receipt thereof. Notwithstanding anything to the contrary in this Sub-Sublease, the Sublease or the Prime Lease, Sub-Subtenant shall have no obligation to make or cause improvements or alterations the Sub-Subleased Premises and shall have no liability or responsibility to remove or restore any alterations made to the Sub-Subleased Premises prior to the Commencement Date of this Sub-Sublease.

(iii)    Electrical Usage. Except to the extent caused by the negligence or willful misconduct of Sub-Sublandlord, Sub-Subtenant hereby agrees to indemnify and hold Sub-Sublandlord harmless against and from any and all claims, damages, costs, and fines arising out of or connected with Sub-Subtenant’s use of electricity in the Sub-Subleased Premises in excess of the Sub-Subleased Premises Standard Electrical Capacity, which is five (5) watts per rentable square foot of the Sub-Subleased Premises (convenience) and 1.5 watts per rentable square foot Sub-Subleased Premises (lighting).

8.    Liability for Damage or Injury and Indemnification.

(a)    Limitation of Liability; Indemnification. Sub-Sublandlord shall not be liable for any damage to the Sub-Subleased Premises or any injury to persons sustained by Sub-Subtenant or its employees, agents, invitees, guests, or other persons caused by conditions or activities on the Sub-Subleased Premises or the Building (including, without limitation, the Cafeteria, Fitness Center, Bike Room or Shower Facilities), or activities of Sub-Subtenant in or upon the Building (including, without limitation, use of the Cafeteria, Fitness Center, Bike Room or Shower Facilities), except to the extent any loss, cost, damage or expense is attributable to the gross negligence or intentional misconduct of Sub-Sublandlord or its agents or employees, and subject to the waiver of subrogation provisions hereof and in the Sublease. Subject to the waiver of subrogation provisions set forth in subsection (b), below, except to the extent caused by the negligence or willful misconduct of Sub-Sublandlord or its agents or employees, (each of the foregoing, an “Indemnified Party”), Sub-Subtenant hereby indemnifies and saves harmless the non-negligent Indemnified Parties from any liability, loss, cost or expense (including, without limitation, reasonable attorneys’ fees) arising out of (i) Sub-Subtenant’s use or occupancy of the Sub-Subleased Premises, the Cafeteria, Fitness Center, Bike Room or Shower Facilities and (ii) Sub-Subtenant’s failure to keep, observe or perform any of the terms, provisions, covenants, conditions and obligations on Sub-Subtenant’s part to be kept, observed or performed under this Sub-Sublease. Subject to the waiver of subrogation provisions set forth in subsection (b), below, except to the extent caused by the gross negligence or willful misconduct of Sub-Subtenant, Sub-Sublandlord hereby indemnifies and saves harmless Sub-Subtenant from any liability, loss, cost or expense (including, without limitation, reasonable attorneys’ fees) arising out of (x) Sub-Sublandlord’s failure to keep, observe or perform any of the terms, provisions, covenants, conditions and obligations on Sub-Sublandlord’s part to be kept, observed or performed under this Sub-Sublease and (y) the negligence or willful misconduct of Sub-Sublandlord or anyone acting by or through Sub-Sublandlord. Sub-Subtenant’s and Sub-Sublandlord’s obligation hereunder shall survive the termination of this Sub-Sublease. Unless carried by Sublandlord, Sub-Subtenant shall carry all insurance, in form and substance as required of Sub-Sublandlord under the Sublease.

(b)    Waiver of Subrogation. Notwithstanding anything to the contrary in this Sub-Sublease, whether the loss or damage is due to the negligence of Sub-Sublandlord or its agents or employees, Sub-Subtenant hereby releases Sub-Sublandlord and its agents and employees from responsibility for and waives its entire claim of recovery for (i) any and all loss or damage to the personal property of Sub-Subtenant located in the Sub-Subleased Premises arising out of any of the perils which are covered by Sub-Subtenant’s property insurance policy or which would be covered by an all-risk property insurance policy required to be obtained by the terms herein if such policy was obtained by Sub-Subtenant, or (ii) loss resulting from business interruption at the Sub-Subleased Premises, arising out of any of the perils which may be covered by the business interruption insurance policy carried by Sub-Subtenant or which would be covered by a business

interruption insurance policy required to be obtained by the terms herein, with twenty-four (24) months coverage if such policy was obtained by Sub-Subtenant. Similarly, notwithstanding anything to the contrary in this Sub-Sublease, whether the loss or damage is due to the negligence of Sub-Subtenant or its agents or employees, Sub-Sublandlord hereby releases Sub-Subtenant and its agents and employees from responsibility for and waives its entire claim of recovery for any and all loss or damage to personal property of Sub-Sublandlord located in the Sub-Subleased Premises, arising out of any of the perils which are covered by any such property insurance or business interruption insurance which Sub-Sublandlord obtains or would be covered if any such policy was obtained by Sub-Sublandlord if such policy was required to be obtained by the terms herein. Sub-Sublandlord and Sub-Subtenant shall each cause its respective insurance carrier(s) to consent to such waiver of all rights of subrogation against the other, and to issue an endorsement to all policies of insurance obtained by such party confirming that the foregoing release and waiver will not invalidate such policies. Sub-Subtenant shall only be required to obtain such insurance waiver if and to the extent Sublandlord has not done so for the benefit of Subtenant under the Sublease.

9.    Assignments and Subleases.    

(a)    Sub-Subtenant shall not have the right to assign, mortgage, pledge or otherwise encumber this Sub-Sublease or any interest herein (including any assignment by operation of law), or sub-sublet all or any part of the Sub-Subleased Premises (any of the foregoing, a “transfer”) without the prior written consent of either Sub-Sublandlord or Sublandlord, including, without limitation, transfers to Permitted Transferees (hereinafter defined). Sub-Sublandlord’s approval shall be deemed given in accordance with Section 6(d) of this Sub-Sublease and if Section 6(d) of this Sub-Sublease does not apply, such approval shall not be unreasonably withheld, conditioned or delayed. No assignment or sub-subletting shall relieve Sub-Subtenant from primary liability for all obligations of Sub-Subtenant under this Sub-Sublease, whether accruing before or after the date of such assignment or sub-subletting. For purposes of this Sub-Sublease, the term “sublet” or “sub-sublet” shall be deemed to include the granting of any rights of occupancy of any portion of the Sub-Subleased Premises. Any attempted transfer in violation of the requirements of this Section 9 shall be null and void and of no force or effect. Notwithstanding anything to the contrary in the Prime Lease or Sublease, Sub-Sublandlord shall not have recapture rights.

(b)    Except for transfers to Permitted Transferees, if Sub-Subtenant wishes to enter into a transfer, Sub-Subtenant must provide not less than ten (10) days’ prior written notice thereof to Sub-Sublandlord, which notice shall include the proposed effective date of such assignment or sublease, and in the case of a proposed sublease, shall specify the space to be sublet.

(c)    The consent (or deemed consent) by Sub-Sublandlord to any transfer shall neither be construed as a waiver or release of Sub-Subtenant from any covenant or obligation of Sub-Subtenant under this Sub-Sublease, nor as relieving Sub-Subtenant from giving Sub-

Sublandlord the aforesaid ten (10) days’ notice of, or from obtaining the consent of Sub-Sublandlord as and in accordance with subsection (a) above, to, any further transfer. The collection or acceptance of rent from any such transferee shall not constitute a waiver or release of Sub-Subtenant from any covenant or obligation of Sub-Subtenant under this Sub-Sublease, except as expressly agreed by Sub-Sublandlord in writing.

(d)    Notwithstanding anything contained herein to the contrary, the Sub-Subleased Premises may be occupied by, or subleased or assigned to, a Sub-Subtenant Affiliate (as hereinafter defined), and such occupancy, assignment or sublease shall be permitted provided Sub-Subtenant delivers notice thereof to Sub-Sublandlord prior to such occupancy, assignment or sublease and such Sub-Subtenant Affiliate agrees in writing to assume all obligations of Sub-Subtenant under this Sub-Sublease. For purposes of this subparagraph, a “Sub-Subtenant Affiliate” shall mean an entity that, directly or indirectly Controls, is Controlled by, or is under common Control with Sub-Subtenant. For purposes of this subparagraph, “Control” shall mean ownership of sufficient stock or membership or partnership interests of an entity to have voting control of such entity (such as ownership of 50% or more of the outstanding voting stock of a corporation or of the outstanding membership, partnership or other similar interest if such entity is not a corporation). Notwithstanding anything contained herein to the contrary, Sub-Subtenant may assign this Sub-Sublease to an entity with which Sub-Subtenant merges, consolidates or which purchases all or substantially all of Sub-Subtenant’s stock or assets (a “Successor”) without Sub-Sublandlord’s prior written approval. The term “Permitted Transferee” shall mean a Sub-Subtenant Affiliate or Successor, and the term “Permitted Transfer” shall mean a transfer to Permitted Transferee in accordance with this Section 9(d). In the event of a transfer to a Sub-Subtenant Affiliate, Sub-Subtenant shall not be released from any covenant or obligation of Sub-Subtenant under this Sub-Sublease, but shall remain jointly and severally liable with Sub-Subtenant Affiliate for the performance of all covenants and obligations hereunder. In the event of a transfer to a Successor, such Successor shall expressly assume all obligations of Sub-Subtenant under this Sub-Sublease in writing.

10.    Services and Amenities.

(a)    Services. Anything contained in this Sub-Sublease to the contrary notwithstanding, the only services or rights to which Sub-Subtenant is entitled hereunder are those to which Sub-Sublandlord is entitled under the Sublease from Sublandlord. In the event Sub-Sublandlord is entitled to any rental abatement on account of any interruption of essential services to the Sub-Subleased Premises (and not other portions of the Subleased Premises subleased by Sub-Sublandlord pursuant to the Sublease) pursuant to the terms of the Sublease, Sub-Subtenant shall be entitled to proportionately abate its rental obligations hereunder for the same period of time. Sub-Subtenant shall, within thirty (30) days of demand, pay or reimburse Sub-Sublandlord for all costs and expenses actually incurred by Sub-Sublandlord (i) payable under the Sublease arising

solely out of Sub-Subtenant’s acts or omissions with respect to this Sub-Sublease or the Sub-Subleased Premises or Sub-Subtenant’s requests for services in excess of those provided by Landlord and included in Operating Expenses under the Prime Lease in connection with the Sub-Subleased Premises and (ii) for services to the Sub-Subleased Premises requested in writing by Sub-Subtenant which are provided directly by Sublandlord and billed to Sub-Sublandlord, including (a) supplemental chilled or condenser water, (b) above building standard or overtime HVAC, (c) extra cleaning, (d) overtime or dedicated freight elevator service, and (e) any maintenance, repair or other service for which a separate charge is payable to Landlord under the Prime Lease or which is provided by Sublandlord, and (f) any janitorial service in excess of those described on Exhibit E of the Prime Lease. Sublandlord currently causes the carpeting in the elevator lobby of the Sub-Subleased Premises to be cleaned approximately once per quarter, which frequency exceeds that set forth in the standard janitorial specifications set forth on Exhibit E of the Prime Lease; such excess is not subject to a separate charge.. To the extent Sub-Sublandlord is billed for such costs, Sub-Subtenant shall pay the excess charge to Sub-Sublandlord that is allocable to the Sub-Subleased Premises as Additional Sub-Subrent from time to time. Sublandlord currently maintains the Supplemental HVAC, as well as the water heaters, water filters, VAV boxes, and appurtenances thereto. To the extent Sub-Sublandlord is billed by Sublandlord for such costs attributable to the Sub-Subleased Premises, Sub-Subtenant shall pay its proportionate share of such maintenance costs to Sub-Sublandlord as Additional Sub-Subrent from time to time. Sub-Sublandlord shall charge Sub-Subtenant the actual costs of those excess services set forth in this Section 10(a) and in no event add any costs or expenses to Sub-Subtenant’s proportionate share of such costs, such as a management fee, administration fee, or other markup. Notices from Sub-Subtenant requesting overtime HVAC services shall be delivered to the Director fo Support Services for the Corporate Executive Board Company (or such other contact of which Sub-Sublandlord notifies Sub-Subtenant from time to time). The current cost for overtime HVAC services is: i) Eighty-nine dollars and 50 cents ($89.50) per hour for up to three (3) hours; and ii) One hundred and ninety-six dollars and 50 cents ($196.50) per hour for four (4) or more hours. Sub-Sublandlord shall provide Sub-Subtenant with up to two hundred twenty-five (225) access card keys for its employees at Five and 00/100 Dollars ($5.00) per card. Sub-Subtenant may obtain additional or replacement access card keys for its employees by written request to Sub-Sublandlord, at Sub-Sublandlord’s actual cost therefor. Security management is provided to Building by Kastle Systems.

(b)    Amenities.    Subject to Sublandlord’s prior written approval, Sub-Subtenant shall have access to and use of, at no cost to Sub-Subtenant, the Cafeteria and Fitness Facility (as such terms are defined in the Sublease) upon the same terms and conditions set forth in the Sublease. If Sublandlord does not provide such written, Sections 28(a), (b) and (d) of the Sublease shall not apply. Sub-Subtenant shall have access to and use of the bike room and shower facilities provided by Landlord in accordance with the terms of the Sublease. Sub-Subtenant acknowledges that Sub-Sublandlord does not have sole authority over the amenities in this Subsection 10(b); however, Sub-Sublandlord shall not take any action or permit anything to be done which would cause Sub-Subtenant to lose its rights to the use and access of the Cafeteria, Fitness Facility, bike room and shower facilities.

11.    Default.    In the event that Sub-Subtenant shall be in default beyond any applicable notice and cure period of any covenant or obligation under this Sub-Sublease, or if any other default set forth in Section 19 of the Prime Lease occurs with respect to Sub-Subtenant and is not cured within the applicable notice and cure periods set forth in such Section 19, then Sub-Sublandlord shall have available to it all of the remedies available to Sublandlord under the Sublease in the event of a like default or failure on the part of the Subtenant thereunder. Sub-Subtenant shall have the same cure periods and notice rights in connection with a default under this Sub-Sublease as Tenant has under the Prime Lease; provided, however, if Sub-Sublandlord receives a notice of default from Sublandlord relating to a default by Sub-Subtenant, then Sub-Sublandlord shall immediately provide the notice to Sub-Subtenant and the period of time to cure such Sub-Subtenant default set forth in such default notice shall govern. Sub-Sublandlord shall use commercially reasonable efforts to mitigate its damages resulting from a default under this Sub-Sublease by Sub-Subtenant beyond any applicable notice and cure period. Notwithstanding anything contained herein to the contrary, except with respect to payments that are required to be made by Sub-Subtenant directly to Sub-Sublandlord hereunder which fail to be paid within the timeframes required hereby, Sub-Sublandlord shall not declare a default against Sub-Subtenant unless Sublandlord has delivered a notice of such default to Subtenant under the Sublease with respect to the actions or omissions of Sub-Subtenant (including failure of Sub-Subtenant to pay Sub-Subrent directly to Sublandlord). In no event shall Sub-Subtenant be liable for consequential or punitive damages.

12.    No Waiver. The failure of either party to insist at any time upon the strict performance of any covenant or agreement herein, or to exercise any option, right, power or remedy contained in this Sub-Sublease shall not be construed as a waiver or a relinquishment thereof for the future. No act or thing done by Sub-Sublandlord or its agents during the term hereof shall be deemed an acceptance or surrender of the Sub-Subleased Premises, and no agreement to accept a surrender of the Sub-Subleased Premises shall be valid unless in writing and signed by Sub-Sublandlord.

13.    Surrender of Sub-Subleased Premises; Holdover. Upon the expiration or other termination of the Sub-Sublease Term, Sub-Subtenant shall quit and surrender to Sub-Sublandlord

the Sub-Subleased Premises, broom clean, in good order and condition, ordinary wear and tear and damage from casualty excepted, and Sub-Subtenant shall remove all of its property as provided in Section 10.B. of the Prime Lease. Sub-Subtenant shall only be required to remove alterations that are required to be removed by Sublandlord in writing and are not the obligation of Sub-Sublandlord to be removed pursuant to the terms of the Sublease. In the event of holding over by Sub-Subtenant or any person or entity claiming under Sub-Subtenant after expiration or other termination of the Sub-Sublease Term, or in the event Sub-Subtenant continues to occupy the Sub-Subleased Premises after the termination of Sub-Subtenant’s right of possession due to a default by Sub-Subtenant, such holding over or possession shall constitute a tenancy at sufferance. In the event of any such holding over, Sub-Sublandlord shall have the right, in accordance with applicable law, to enter upon and take possession of the Sub-Subleased Premises. Sub-Subtenant shall, throughout the entire holdover period, pay Rent at the times and in the manner required by this Sub-Sublease; provided, however, if Sub-Subtenant holds over in the Sub-Subleased Premises after the Sub-Sublease Expiration Date, and if Sub-Sublandlord desires to repossess the Sub-Subleased Premises at any time after the Sub-Sublease Expiration Date, then Sub-Sublandlord shall deliver written notice requiring Sub-Subtenant to vacate the Sub-Subleased Premises (the “Vacation Notice”), which vacation and surrender shall occur not earlier than the later of (x) thirty (30) days after the Vacation Notice or (y) the Termination Date (the “Vacation Date”). If Sub-Subtenant has not vacated and surrendered the Sub-Subleased Premises to Sub-Sublandlord on or before the Vacation Date, then, from and after the Vacation Date, and during the holdover period, in addition to Sub-Sublandlord’s other rights and remedies, Sub-Subtenant shall pay Monthly Base Sub-Subrent to Sub-Sublandlord in an amount equal to 150% of the Monthly Base Sub-Subrent in effect during the last month of the Sub-Sublease Term, prorated for the number of days of holdover past the Vacation Date. No holding over by Sub-Subtenant after the expiration of the Sub-Sublease Term and no acceptance of Rent by Sub-Sublandlord during a holdover period, whether with or without the consent of Sub-Sublandlord, shall be construed to extend the Sub-Sublease Term or prevent Sub-Sublandlord from recovering immediate possession of the Sub-Subleased Premises by summary proceedings or otherwise. In addition, in the event of any unauthorized holding over by Sub-Subtenant which results in holdover under the Sublease by Sub-Sublandlord, Sub-Subtenant will protect, defend, indemnify and hold Sub-Sublandlord harmless from and against any claims, demands, liability, costs, expenses or damages (including reasonable attorneys’ fees) for which Sub-Sublandlord may become liable to Sublandlord under the Sublease due to such holding over.

14.    Security Deposit.

(a)    Within one (1) business day after Sub-Sublandlord provides Sub-Subtenant with written notice of Landlord’s and Sublandlord’s acceptance of this Sub-Sublease, Sub-Subtenant shall deliver to Sub-Sublandlord a security deposit (“Security Deposit”) in the amount of the then-current amount of three (3) Monthly Installments of Annual Base Sub-Subrent, which Security Deposit may be in the form of cash or a letter of credit that conforms to the requirements for the

form of Letter of Credit set forth in Section 11(b) of the Sublease, to secure the payment and performance by Sub-Subtenant of all of Sub-Subtenant’s obligations, covenants, conditions and agreements under this Sub-Sublease. If in the form of cash, Sub-Sublandlord shall not be required to keep the Security Deposit separate from other funds or accounts of Sub-Sublandlord and the Security Deposit shall not bear interest. If Sub-Subtenant defaults in the observance or performance of any of such terms and conditions (beyond any applicable notice and cure period of any covenant or obligation under this Sub-Sublease), Sub-Sublandlord may use or apply all or any part of the Security Deposit for the payment of any Rent not paid when due or for the payment of any other amounts due Sub-Sublandlord by reason of such default, including any actual and reasonable costs of Sub-Sublandlord’s observing or performing such terms or conditions on Sub-Subtenant’s behalf and any deficiencies in reletting or damages incurred by Sub-Sublandlord. If Sub-Sublandlord shall use or apply all or any part of the Security Deposit, Sub-Subtenant shall, within five (5) business days’ after receipt of written notice of such use or application, deliver to Sub-Sublandlord additional funds so as to restore the Security Deposit to the amount specified above. If Sub-Subtenant shall faithfully observe and perform all of the terms and conditions of this Sub-Sublease or cure any default thereof, the Security Deposit, or so much thereof as shall not have been used or applied in accordance with this Section 14, shall be returned to Sub-Subtenant within thirty (30) days after the expiration or sooner termination of this Sub-Sublease and the vacation and surrender of the Sub-Sublet Premises in accordance with this Sub-Sublease. In the event of any assignment of Sub-Sublandlord’s interest in this Sub-Sublease, Sub-Sublandlord shall transfer the Security Deposit to such assignee, in which event such assignee shall hold, use and apply the Security Deposit in accordance with the covenants, terms and conditions of this Sub-Sublease. Following receipt of written notice of transfer of the Security Deposit, Sub-Subtenant shall look solely to the assignee for the return of the Security Deposit and Sub-Sublandlord shall thereupon be released from all liability to Sub-Subtenant for the return of the Security Deposit. Sub-Subtenant shall not assign (other than to a permitted assignee of this Sub-Sublease) or encumber its interest in the Security Deposit and no such assignment or encumbrance shall be valid or binding upon Sub-Sublandlord unless Sub-Sublandlord provides written consent to such assignment or encumbrance. Broker. Each party represents and warrants to the other that, except for CBRE, Inc. (“Sub-Sublandlord’s Broker”) and Jones Lang LaSalle Brokerage, Inc. (“Sub-Subtenant’s Broker” and, together with Sub-Sublandlord’s Broker, “Brokers”) (i) no broker brought about this transaction or dealt with either party in connection herewith, and (ii) neither party has had any dealings with any real estate broker, finder or other person, with respect to this Sub-Sublease in any manner. Each party agrees to indemnify, defend and hold harmless the other against and from any and all losses, costs, claims, damages and expenses (including, without limitation, reasonable attorneys’ fees) which may be claimed by any broker (other than the Brokers) by reason of any dealings, actions or agreements with the indemnifying party. Sub-Sublandlord agrees to compensate the Brokers pursuant to the terms of a separate agreement between Sub-Sublandlord and the Brokers.

(b)    If Tenant is not currently in a monetary default beyond any applicable notice and cure periods as of April 15, 2017 and October 15, 2017 respectively (a) prior to April 15, 2017, then the amount of the Security Deposit shall be reduced to two (2) Monthly Installments of Annual Base Sub-Subrent, and (b) prior to October 15, 2017, then the amount of the Security Deposit shall be reduced to one and one half (1.5) Monthly Installments of Annual Base Sub-Subrent. If the Security Deposit is held in cash, Landlord shall return to Tenant one (1) Monthly Installment of Annual Sub-Subrent within five (5) days following each applicable reduction date (i.e. by April 20, 2017 and October 20, 2017). If the Security Deposit is held in the form of a letter of credit, Landlord and Tenant shall cooperate to cause the appropriate reduction in the letter of credit within five (5) days after each applicable reduction date.

15.    Notices. Sub-Sublandlord shall concurrently send to Sub-Subtenant copies of any notices to Sublandlord or Landlord and shall immediately deliver to Sub-Subtenant copies of any notices from Sublandlord or Landlord. All notices given or required to be given pursuant to the provisions hereof shall be in writing and shall only be sent by reputable overnight delivery service or certified mail, postage prepaid, return receipt requested, to the following addresses, or to such other address as the party to be notified shall specify in writing by such notice:

Notices shall be deemed given and effective upon the date of delivery (or refusal to accept delivery) if delivered by hand or overnight delivery service, and upon the date set forth on the return receipt therefor if delivered by certified mail.

16.    Parking. Sub-Subtenant shall have the ongoing right, but not the obligation, to obtain non-reserved, first-come, first-served parking contracts, by contracting directly with the Garage Operator, for the parking of up to thirty-seven (37) automobiles in the Garage upon the same rental, terms and conditions in the parking contracts that the Garage makes available to Sub-Sublandlord,

and Sub-Sublandlord hereby relinquishes and shall have no further rights with respect to such spaces under the Sublease. The current rates paid by Sub-Sublandlord to Garage are: i) One hundred and seventy-five dollars ($175) per general parking space; and ii) Three hundred and fifty dollars ($350) per reserved parking space. All parking rights granted to Sub-Subtenant shall be at Sub-Subtenant’s sole risk. Sub-Subtenant shall obtain parking access keys directly from Sublandlord at Sub-Subtenant’s expense. Notwithstanding anything to the contrary in the Sublease, Sub-Sublandlord shall not have the right to issue permits (or to cause such issuance) or establish other reasonable parking controls (or cause such controls to be established) in addition to those in place as of the date hereof.

17.    Sub-Subtenant Signage. Subject to written approval by Sublandlord, Sub-Subtenant shall have the right to install, at its expense, (a) signage in the Building lobby and (b) suite entry signage at the entrance to the Sub-Subleased Premises, in a location and with dimensions as approved by Sublandlord. Sub-Subtenant shall be permitted to remove Sub-Sublandlord’s signage in order to install its signage. Sub-Subtenant acknowledges and agrees that the Building does not have a lobby directory. Sub-Sublandlord shall cooperate in good faith to obtain any required approvals to lobby and suite entry signage; provided, however, if Sublandlord and Landlord (if required under the Prime Lease) do not approve the signage, the Sub-Sublandlord and Sub-Subtenant shall work together in good faith to redesign the signage package and resubmit to the necessary parties.

18.    Waiver of Jury Trial. THE PARTIES HERETO EACH HEREBY WAIVES ALL RIGHT TO TRIAL BY JURY IN ANY CLAIM, ACTION, PROCEEDING OR COUNTERCLAIM BY EITHER PARTY AGAINST THE OTHER ON ANY MATTERS ARISING OUT OF OR IN ANY WAY CONNECTED WITH THIS SUB-SUBLEASE, THE RELATIONSHIP OF THE PARTIES HERETO OR SUB-SUBTENANT’S USE OR OCCUPANCY OF THE SUB-SUBLEASED PREMISES.

19.    Reciprocal Litigation Costs. In the event of any litigation between Sub-Sublandlord and Sub-Subtenant, the unsuccessful party as determined by a court of competent jurisdiction shall reimburse the successful party for all reasonable legal fees, court costs and out-of-pocket expenses incurred by the successful party in prosecuting or defending any such action. For the purposes of this Section 20, “litigation” shall include any legal proceeding or retention of an attorney to enforce any right or obligation under this Sub-Sublease.

20.    Estoppel Certificates. Each party shall, from time to time, within ten (10) business days following request by the other party, execute and deliver to such persons as requested by such party, a statement certifying that this Sub-Sublease is unmodified and in full force and effect (or if there have been modifications, that the same is in full force and effect as so modified), stating the dates to which Annual Base Sub-Subrent and other charges payable under this Sub-Sublease have

been paid, and stating that, to the certifying party’s knowledge, the requesting party is not in default hereunder (or if a default is alleged to exist, stating the nature of such alleged default).

21.    Representations. Sub-Sublandlord represents and warrants that, as of the date hereof: (a) to the best of Sub-Sublandlord’s knowledge, as of the Sub-Sublease Commencement Date the Sub-Subleased Premises are in compliance with all applicable Laws and all systems servicing the Sub-Subleased Premises, including mechanical, electrical and plumbing systems and the Supplemental HVAC, are in good working order and repair, (b) Sub-Sublandlord has not caused the presence of Hazardous Materials in, on or under the Sub-Subleased Premises, (c) Sub-Sublandlord has not received any notice from the Sublandlord asserting that Sub-Sublandlord is in Default under the Sublease and, to its knowledge, it is not aware of any default on its part under the Sublease, (d) the Sublease is unmodified and in full force and effect; and (e) Sub-Sublandlord has the power and authority to enter into this Sub-Sublease. Sub-Subtenant represents and warrants that it has the power and authority to enter into this Sub-Sublease.

22.    Consent of Sublandlord. The parties shall enter into the Consent of Sublandlord letter agreement substantially in the form attached hereto as Exhibit A on or about the date hereof the (“Consent”). If Sublandlord fails to execute the Consent within thirty (30) days after written request therefor, following full execution and delivery by both parties of this Sub-Sublease, then either party shall have the right to terminate this Sub-Sublease by written notice thereof to the other party and Sublandlord, which must be delivered within five (5) business days after expiration of such thirty (30) day period (time being of the essence), else such right to terminate is automatically waived and of no further force or effect.

23.    Miscellaneous.

(a)    Time of the Essence. Time is of the essence in the performance by both parties with respect to their obligations hereunder.

(b)    Severability. In the event any part of this Sub-Sublease is held to be unenforceable or invalid for any reason, the balance of this Sub-Sublease shall not be affected and shall remain in full force and effect during the term of this Sub-Sublease.

(c)    Binding Effect. The covenants, conditions, agreements, terms and provisions of this Sub-Sublease shall be binding upon and shall inure to the benefit of the parties hereof and each of their respective successors and assigns, subject to the restrictions and limitations set forth herein.

(d)    Governing Law. It is the intention of the parties hereto that this Sub-Sublease (and the terms and provisions hereof) shall be construed and enforced in accordance with the laws of the Commonwealth of Virginia.

(e)    Entirety. It is understood and agreed by and between the parties hereto that this Sub-Sublease and the Consent contain the final and entire agreement between the parties relative to the subject matter hereof, and that they shall not be bound by any terms, statements, conditions or representations relative to the subject matter hereof, oral or written, express or implied, not herein contained. This Sub-Sublease may not be changed or terminated orally or in any manner other than by an agreement in writing and signed by all parties hereto.

(f)    Submission Not an Offer. The submission of this Sub-Sublease by either party to the other shall not constitute an offer by such party and neither party shall be bound in any way unless and until this Sub-Sublease is executed and delivered by both parties.

(g)    Counterparts. This Sub-Sublease may be executed in two (2) or more counterparts, each of which shall be deemed an original, but all of which together shall constitute one and the same instrument.

(h)    Exhibits. The exhibits attached hereto are made a substantive part of this Sub-Sublease.

(i)    Appointment of Resident Agent. For purposes of § 55-218.1 of the Code of Virginia, Sub-Sublandlord appoints as its resident agent:_____________________.

(j)    No Recordation. Neither party shall have the right to record this Sub-Sublease or the Sublease.

(k)    Intentionally omitted.

(l)    Quiet Enjoyment. Sub-Sublandlord covenants and agrees with Sub-Subtenant that so long as no default by Sub-Subtenant exists under this Sub-Sublease after notice and applicable cure periods have passed, Sub-Subtenant shall have quiet and undisturbed and continuous possession of the premises, free from any claims against the Sub-Sublandlord and all persons claiming under it, by or through the Sub-Sublandlord.

(m)    No Merger or Imputed Obligations. The covenants, representations, warranties, and obligations of Sub-Subtenant under this Sub-Sublease shall apply only to Sub-Subtenant and shall not be conferred or imputed to Sublandlord under the Sublease or to Tenant under the Prime Lease, regardless of any unity of identity among the entities comprising Sub-Subtenant, Sublandlord and Tenant. Each of the Prime Lease, Sublease, and Sub-Sublease shall be and remain separate and distinct documents and none of the rights and obligations among them shall merge notwithstanding unity of identity among parties thereto.

IN WITNESS WHEREOF, the parties hereto have made and entered into this Sub-Sublease Agreement under seal as of the date and year first set forth above.