Exhibit 10.23

LEASE AGREEMENT

THIS LEASE AGREEMENT (this “Lease”) is made this 4 day of December, 2014, between TCIT DALLAS INDUSTRIAL, INC., a Delaware corporation (“Landlord”), and the Tenant named below.

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1. Granting Clause. In consideration of the obligation of Tenant to pay rent as herein provided and in consideration of the other terms, covenants, and conditions hereof, Landlord leases to Tenant, and Tenant takes from Landlord, the Premises. to have and to hold for the Lease Term, subject to the terms, covenants and conditions of this Lease.

2. Acceptance of Premises. Tenant shall accept the Premises in its condition as of the Commencement Date, subject to all applicable laws, ordinances, regulations, covenants and restrictions. Landlord has made no representation or warranty as to the suitability of the Premises for the conduct of Tenant’s business, and Tenant waives any implied warranty that the Premises are suitable for Tenant’s intended purposes. In no event shall Landlord have any obligation for any defects in the Premises or any limitation on its use. The taking of possession of the Premises shall be conclusive evidence that Tenant accepts the Premises and that the Premises were in good condition at the time possession was taken except for items that are Landlord’s responsibility under Paragraph 10 and any punch list items agreed to in writing by Landlord and Tenant. No later than 10 days after written demand is made therefor by Landlord of Tenant, Tenant shall execute and deliver to Landlord a Commencement Date Certificate in the form of Exhibit C attached to and hereby made a part of this Lease.

3. Use. The Premises shall be used only for the purpose of receiving, storing, shipping and selling (but specifically excluding retail selling) products, materials and merchandise made and/or distributed by Tenant and for such other lawful purposes as may be incidental thereto; provided, however, with Landlord’s prior written consent, Tenant may also use the Premises for light manufacturing. Tenant shall not conduct or give notice of any auction, liquidation, or going out of business sale on the Premises. Tenant will use the Premises in a careful, safe and proper manner and will not commit waste, overload the floor or structure of the Premises or subject the Premises to use that would damage the Premises. Tenant shall not permit any objectionable or unpleasant odors, smoke, dust, gas, noise, or vibrations to emanate from the Premises, or take any other action that would constitute a nuisance or would disturb, unreasonably interfere with, or endanger Landlord or any tenants of the Project. Outside storage, including without limitation, storage of trucks and other vehicles, is prohibited without Landlord's prior written consent; provided, however, Tenant shall have the right to park operable vehicles and trailers overnight at the truck loading docks and designated truck and trailer parking areas for the Premises and operable automobiles in the designated automobile parking areas, and further provided there is no interference with the access of other tenants to the Building and Project parking lots and truck courts. Tenant, at its sole expense, shall use and occupy the Premises in compliance with all laws, including, without limitation, the Americans with Disabilities Act of 1990 (as amended) (the “ADA”), orders, judgments, ordinances, regulations, codes, directives, permits, licenses, covenants and restrictions now or hereafter applicable to the Premises (collectively, “Legal Requirements”). The Premises shall not be used as a place of public accommodation under the ADA or similar state statutes or local ordinances or any regulations promulgated thereunder, all as may be amended from time to time. Tenant shall, at its expense, make any alterations or modifications, within or without the Premises, that are required by Legal Requirements related to Tenant's use or occupation of the Premises. Tenant will not use or permit the Premises to be used for any purpose or in any manner that would void Tenant's or Landlord's insurance, increase the insurance risk, or cause the disallowance of any sprinkler credits. If any increase in the cost of any insurance on the Premises or the Project is caused by Tenant's use or occupation of the Premises, or because Tenant vacates the Premises, then Tenant shall pay the amount of such increase to Landlord. Any occupation of the Premises by Tenant prior to the Commencement Date shall be subject to all obligations of Tenant under this Lease.

4. Base Rent. Tenant shall pay Base Rent in the amount set forth on Page 1 of this Lease. The first month’s Base Rent, the Security Deposit, and the first monthly installment of estimated Operating Expenses (as hereafter defined) shall be due and payable on the date hereof, and Tenant promises to pay to Landlord in advance, without demand, deduction or set-off, monthly installments of Base Rent on or before the first day of each calendar month succeeding the Commencement Date. Payments of Base Rent for any fractional calendar month shall be prorated. All payments required to be made by Tenant to Landlord hereunder (or to such other party as Landlord may from time to time specify in writing) shall be made by check or by Electronic Fund Transfer (“EFT”) of immediately available federal funds before 11:00 a.m., Eastern Time at the Rent Payment Address as provided above or such other place, within the continental United States, as Landlord may from time to time designate to Tenant in writing. The obligation of Tenant to pay Base Rent and other sums to Landlord and the obligations of Landlord under this Lease are independent obligations. Tenant shall have no right at any time to abate, reduce, or set-off any rent due hereunder except as may be expressly provided in this Lease. If Tenant is delinquent in any monthly installment of Base Rent or of estimated Operating Expenses for more than 5 days, Tenant shall pay to Landlord on demand a late charge equal to 5 percent of such delinquent sum. The provision for such late charge shall be in addition to all of Landlord’s other rights and remedies hereunder or at law and shall not be construed as a penalty. Notwithstanding the foregoing, the late fee referenced above shall not be charged with respect to the first occurrence (but not any subsequent occurrence) during any 12-month period that Tenant fails to make payment when due, until five days after Landlord delivers written notice of such delinquency to Tenant.

5. Security Deposit. The Security Deposit shall be held by Landlord as security for the performance of Tenant’s obligations under this Lease. The Security Deposit is not an advance rental deposit or a measure of Landlord’s damages in case of Tenant’s default. Upon each occurrence of an Event of Default (hereinafter defined), Landlord may use all or part of the Security Deposit to pay delinquent payments due under this Lease, and the cost of any damage, injury, expense or liability caused by such Event of Default,

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without prejudice to any other remedy provided herein or provided by law. Tenant shall pay Landlord on demand the amount that will restore the Security Deposit to its original amount. Landlord's obligation respecting the Security Deposit is that of a debtor, not a trustee; no interest shall accrue thereon. The Security Deposit shall be the property of Landlord, but any remaining balance shall be paid to Tenant within thirty (30) days after the expiration or earlier termination of this Lease. Landlord shall be released from any obligation with respect to the Security Deposit upon transfer of this Lease and the Premises to a person or entity assuming Landlord's obligations under this Paragraph 5.

6. Operating Expense Payments. During each month of the Lease Term, on the same date that Base Rent is due, Tenant shall pay Landlord an amount equal to 1/12 of the annual cost, as estimated by Landlord from time to time, of Tenant’s Proportionate Share (hereinafter defined) of Operating Expenses for the Project. Payments thereof for any fractional calendar month shall be prorated. The term “Operating Expenses” means all costs and expenses incurred by Landlord with respect to the ownership, maintenance, and operation of the Project including, but not limited to costs of: Taxes (hereinafter defined) and fees payable to tax consultants and attorneys for consultation and contesting taxes; insurance; utilities; maintenance, repair and replacement of all portions of the Project, including without limitation, paving and parking areas, roads, non-structural components of the roofs (including the roof membrane), alleys, and driveways, mowing, landscaping, exterior painting, utility lines, lighting, electrical systems and other mechanical and building systems; amounts paid to contractors and subcontractors for work or services performed in connection with any of the foregoing; charges or assessments of any association to which the Project is subject; property management fees payable to a property manager, including any affiliate of Landlord (not to exceed three percent (3%) of gross revenues of the Project); security services, if any; trash collection, sweeping and removal; and additions or alterations made by Landlord to the Project or the Building in order to comply with Legal Requirements (other than those expressly required herein to be made by Tenant) or that are appropriate to the continued operation of the Project or the Building as an industrial building in the market area, provided that the cost of additions or alterations that are required to be capitalized for federal income tax purposes shall be amortized on a straight line basis over a period equal to the lesser of the useful life thereof for federal income tax purposes or 10 years. Operating Expenses do not include costs, expenses, depreciation or amortization for capital repairs and capital replacements required to be made by Landlord under Paragraph 10 of this Lease, debt service under mortgages or ground rent under ground leases, costs of restoration to the extent of net insurance proceeds received by Landlord with respect thereto, leasing commissions, or the costs of renovating space for tenants.

If Tenant’s total payments of Operating Expenses for any year are less than Tenant’s Proportionate Share of actual Operating Expenses for such year, then Tenant shall pay the difference to Landlord within 30 days after demand, and if more, then Landlord shall retain such excess and credit it against Tenant’s next payments except that during the last calendar year of the Lease Term or any extension terms thereof, Landlord shall refund any such excess within 60 days following the termination of the Lease Term or any extension terms thereof, provided that Tenant is not in default of its obligations under this Lease. For purposes of calculating Tenant’s Proportionate Share of Operating Expenses, a year shall mean a calendar year except the first year, which shall begin on the Commencement Date, and the last year, which shall end on the expiration of this Lease. With respect to Operating Expenses which Landlord allocates to the entire Project, Tenant’s “Proportionate Share” shall be the percentage set forth on the first page of this Lease as Tenant’s Proportionate Share of the Project as reasonably adjusted by Landlord in the future for changes in the physical size of the Premises or the Project; and, with respect to Operating Expenses which Landlord allocates only to the Building, Tenant’s “Proportionate Share” shall be the percentage set forth on the first page of this Lease as Tenant’s Proportionate Share of the Building as reasonably adjusted by Landlord in the future for changes in the physical size of the Premises or the Building. Landlord may equitably increase Tenant’s Proportionate Share for any item of expense or cost reimbursable by Tenant that relates to a repair, replacement, or service that benefits only the Premises or only a portion of the Project or Building that includes the Premises. In the event that during all or any portion of any calendar year, the Building is not fully rented and occupied Landlord shall make an appropriate adjustment in occupancy-related Operating Expenses for such year for the purpose of avoiding distortion of the amount of such Operating Expenses to be attributed to Tenant by reason of variation in total occupancy of the Building, by employing consistent and sound accounting and management principles to determine Operating Expenses that would have been paid or incurred by Landlord had the Building been at least ninety-five percent (95%) rented and occupied, and the amount so determined shall be deemed to have been Operating Expenses for such calendar year. The estimated Operating Expenses for the Premises set forth on the first page of this Lease are only estimates, and Landlord makes no guaranty or warranty that such estimates will be accurate.

For purposes of calculating Tenant’s Proportionate Share of Operating Expenses under Section 6, the maximum increase in the amount of Controllable Operating Expenses (defined below) that may be included in calculating Tenant’s Proportionate Share of Operating Expenses for each calendar year after 2015 shall be limited to 8% per calendar year on a cumulative, compounded basis; for example, the maximum amount of Controllable Operating Expenses that may be included in the calculation of Tenant’s Proportionate Share of Operating Expenses for each calendar year after 2015 shall equal the product of the 2015 Controllable Operating Expenses and the following percentages for the following calendar years: 108% for 2016; 116.64% for 2017; 125.97% for 2018; 136.05% for 2019; etc. “Controllable Operating Expenses” shall mean all Operating Expenses which are within the reasonable control of Landlord; thus, excluding Taxes, insurance, utilities, snow removal costs, costs incurred to comply with governmental requirements, and other costs beyond the reasonable control of Landlord.

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7. Utilities. Tenant shall pay for all water, gas, electricity, heat, light, power, telephone, sewer, sprinkler services, refuse and trash collection, and other utilities and services used on the Premises, all maintenance charges for utilities, and any storm sewer charges or other similar charges for utilities imposed by any governmental entity or utility provider, together with any taxes, penalties, surcharges or the like pertaining to Tenant’s use of the Premises. Landlord may cause at Tenant’s expense any utilities to be separately metered or charged directly to Tenant by the provider in the event Landlord reasonably determines that Tenant’s use of such jointly metered utility materially exceeds the use of such jointly metered utility by other tenants in the Building. Tenant shall pay its share of all charges for jointly metered utilities based upon consumption, as reasonably determined by Landlord. No interruption or failure of utilities shall result in the termination of this Lease or the abatement of rent. Tenant agrees to limit use of water and sewer for normal restroom use.

8. Taxes. Landlord shall pay all taxes, assessments and governmental charges (collectively referred to as “Taxes”) that accrue against the Project during the Lease Term, which shall be included as part of the Operating Expenses charged to Tenant. Landlord may contest by appropriate legal proceedings the amount, validity, or application of any Taxes or liens thereof. All capital levies or other taxes assessed or imposed on Landlord upon the rents payable to Landlord under this Lease and any franchise tax, any excise, use, margin (including, but not limited to, any tax pursuant to Chapter 171 of the Texas Tax Code, as the same may be amended, renewed or replaced from time to time), transaction, sales or privilege tax, assessment, levy or charge measured by or based, in whole or in part, upon such rents from the Premises and/or the Project or any portion thereof shall be paid by Tenant to Landlord monthly in estimated installments or upon demand, at the option of Landlord, as additional rent; provided, however, in no event shall Tenant be liable for any net income taxes imposed on Landlord unless such net income taxes are in substitution for any Taxes payable hereunder. If any such tax or excise is levied or assessed directly against Tenant or results from any Tenant-Made Alterations (defined below), then Tenant shall be responsible for and shall pay the same at such times and in such manner as the taxing authority shall require. Tenant shall be liable for all taxes levied or assessed against any personal property or fixtures placed in the Premises, whether levied or assessed against Landlord or Tenant.

9. Insurance. Landlord shall maintain all risk or special form property insurance covering the full replacement cost of the Building and commercial general liability insurance on the Project in forms and amounts customary for properties substantially similar to the Project, subject to customary deductibles. Landlord may, but is not obligated to, maintain such other insurance and additional coverages as it may deem necessary, including but not limited to, rent loss insurance. All such insurance shall be included as part of the Operating Expenses charged to Tenant. The Project or Building may be included in a blanket policy (in which case the cost of such insurance allocable to the Project or Building will be determined by Landlord based upon the total insurance cost calculations). Tenant shall also reimburse Landlord for any increased premiums or additional insurance which Landlord reasonably deems necessary as a result of Tenant’s use of the Premises.

Tenant, at its expense, shall maintain during the Lease Term the following insurance, at Tenant’s sole cost and expense: (a) commercial general liability insurance applicable to the Premises and its appurtenances providing, on an occurrence basis, a minimum combined single limit of $2,000,000; and in the event property of Tenant’s invitees or customers are kept in, or about the, Premises, Tenant shall maintain warehouser’s legal liability or bailee customers insurance for the full value of the property of such invitees or customers as determined by the warehouse contract between Tenant and its customer; (b) all risk or special form property insurance covering the full replacement cost of all property and improvements installed or placed in the Premises by Tenant; (c) workers’ compensation insurance as required by the state in which the Premises is located and in amounts as may be required by applicable statute and shall include a waiver of subrogation in favor of Landlord; (d) employers liability insurance of at least $1,000,000, (e) business automobile liability insurance having a combined single limit of not less than $2,000,000 per occurrence insuring Tenant against liability arising out of the ownership, maintenance, or use of any owned, hired or nonowned automobiles, and (f) business interruption insurance with a limit of liability representing loss of at least approximately 6 months of income. Any company writing any of Tenant’s insurance shall have an A.M. Best rating of not less than A-VIII and provide primary coverage to Landlord (any policy issued to Landlord providing duplicate or similar coverage shall be deemed excess over Tenant’s policies). All commercial general liability, all risk or special form property insurance, and, if applicable, warehouser’s legal liability or bailee customers insurance policies shall name Tenant as a named insured and Landlord, its property manager, and other designees of Landlord as the interest of such designees shall appear, as additional insureds (General Liability and warehouser’s legal liability or bailee customers) and loss payee (Property-Special Form). The limits and types of insurance maintained by Tenant shall not limit Tenant’s liability under this Lease. Tenant shall provide Landlord with certificates of such insurance as required under this Lease prior to the earlier to occur of the Commencement Date or the date Tenant is provided with possession of the Premises, and thereafter upon renewals at least 15 days prior to the expiration of the insurance coverage. Acceptance by Landlord of delivery of any certificates of insurance does not constitute approval or agreement by Landlord that the insurance requirements of this section have been met, and failure of Landlord to identify a deficiency from evidence provided will not be construed as a waiver of Tenant’s obligation to maintain such insurance. In the event any of the insurance policies required to be carried by Tenant under this Lease shall be cancelled prior to the expiration date of such policy, or if Tenant receives notice of any cancellation of such insurance policies from the insurer prior to the expiration date of such policy, Tenant shall: (i) immediately deliver notice to Landlord that such insurance has been, or is to be, cancelled, (ii) shall promptly replace such insurance policy in order to assure no lapse of coverage shall occur, and (iii) shall deliver to Landlord a certificate of insurance for such policy.

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The all-risk or special form property insurance obtained by Landlord and Tenant shall include a waiver of subrogation by the insurers and all rights based upon an assignment from its insured, against Landlord or Tenant, their officers, directors, employees, managers, agents, invitees and contractors, in connection with any loss or damage thereby insured against. Neither party nor its officers, directors, employees, managers, agents, invitees or contractors shall be liable to the other for loss or damage caused by any risk coverable by all risk or special form property insurance, even if such loss or damage is caused solely or in part by the negligence of Landlord or Tenant, and each party waives any claims against the other party, and its officers, directors, employees, managers, agents, invitees and contractors for such loss or damage, even if such loss or damage is caused solely or in part by the negligence of Landlord or Tenant. The failure of a party to insure its property shall not void this waiver. Tenant and its agents, employees and contractors shall not be liable for, and Landlord hereby waives all claims against such parties for losses resulting from an interruption of Landlord’s business, or any person claiming through Landlord, resulting from any accident or occurrence in or upon the Premises or the Project from any cause whatsoever, including without limitation, damage caused in whole or in part, directly or indirectly, by the negligence of Tenant or its agents, employees or contractors. Landlord and its agents, employees and contractors shall not be liable for, and Tenant hereby waives all claims against such parties for losses resulting from an interruption of Tenant’s business, or any person claiming through Tenant, resulting from any accident or occurrence in or upon the Premises or the Project from any cause whatsoever, including without limitation, damage caused in whole or in part, directly or indirectly, by the negligence of Landlord or its agents, employees or contractors.

10. Landlord’s Repairs. Landlord shall repair, at its expense and without pass through as an Operating Expense, the structural soundness of the roof (which does not include the roof membrane), the structural soundness of the foundation, and the structural soundness of the exterior walls of the Building in good repair, reasonable wear and tear and uninsured losses and damages caused by Tenant, its agents and contractors excluded. The term “walls” as used in this Paragraph 10 shall not include windows, glass or plate glass, doors or overhead doors, special store fronts, dock bumpers, dock plates or levelers, or office entries. Tenant shall promptly give Landlord written notice of any repair required by Landlord pursuant to this Paragraph 10, after which Landlord shall have a reasonable opportunity to repair.

11. Tenant’s Repairs. Landlord, at Tenant’s expense as provided in Paragraph 6, shall maintain in good repair and condition the parking areas and other common areas of the Building, including, but not limited to driveways, alleys, landscape and grounds surrounding the Premises. Subject to Landlord’s obligation in Paragraph 10 and subject to Paragraphs 9 and 15, Tenant, at its expense, shall repair, replace and maintain in good condition all portions of the Premises and all areas, improvements and systems exclusively serving the Premises including, without limitation, dock and loading areas, truck doors, plumbing, water and sewer lines up to points of common connection, fire sprinklers and fire protection systems, entries, doors, ceilings, windows, interior walls, and the interior side of demising walls, and heating, ventilation and air conditioning systems. Such repair and replacements include capital expenditures and repairs whose benefit may extend beyond the Term. Heating, ventilation and air conditioning systems and other mechanical and building systems exclusively serving the Premises shall be maintained at Tenant’s expense pursuant to maintenance service contracts entered into by Tenant or, at Landlord’s election, by Landlord, in which case the costs of such contracts entered into by Landlord shall be included as an Operating Expense. The scope of services and contractors under such maintenance contracts shall be reasonably approved by Landlord. If Tenant fails to perform any repair or replacement for which it is responsible, Landlord may perform such work and be reimbursed by Tenant within 20 days after demand therefor. Tenant shall not be responsible for making any repairs to the structural portions of the Building; provided, however, that Tenant shall bear the full cost of any repair or replacement to any part of the Building or Project that results from damage caused by Tenant, its agents, contractors, or invitees, subject to Paragraphs 9 and 15. Tenant shall additionally bear the full cost of any non-structural repair that benefits only the Premises.

Provided that Tenant enters into and maintains the maintenance service contract for the heating, ventilation, and air conditioning systems serving the Premises (the “Premises HVAC”) required pursuant to the terms and conditions of this Lease, Tenant shall be responsible for only the first $1,500.00 per each occurrence of repair or replacement per unit of the Premises HVAC (except to the extent repair or replacement is necessitated by Tenant’s negligence or willful misconduct in which case Tenant shall be responsible for all costs), with the remaining cost of such repair or replacement being borne by Landlord; provided, if any unit of the Premises HVAC is replaced during the Lease Term, then (i) the foregoing limitations will no longer apply to such unit and (ii) Tenant will be solely responsible for the maintenance, repair, and replacement of such replaced unit.

In addition to the foregoing, if Tenant determines that any unit of the Premises HVAC must be replaced prior to the end of the Lease Term (except to the extent replacement is necessitated by Tenant’s negligence or willful misconduct in which case Tenant shall be responsible for all costs), and Landlord agrees that such replacement is required, Landlord shall pay the cost of such replacement, it being understood and agreed that the cost of said improvement or replacement shall be amortized over a term of fifteen (15) years, beginning on the first day of the calendar month after the calendar month in which the replacement occurs, which amortization shall be based upon equal payments of principal and interest over said fifteen (15) year term, and interest shall be at the rate of ten percent (10%) per annum. Throughout that portion of the Lease Term during which such amortization occurs, Tenant shall pay, as additional Rent, simultaneously with its payment of each installment of Base Rent hereunder, beginning on the first day of the first calendar month after the replacement is installed, the amortized amount, including interest as specified above. The foregoing amortization will be valid to the extent Tenant provides Landlord with quarterly maintenance reports indicating maintenance has been performed on the units in accordance with the provisions of this Paragraph 11.

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12. Tenant-Made Alterations and Trade Fixtures. Any alterations, additions, or improvements made by or on behalf of Tenant to the Premises (“Tenant-Made Alterations”) shall be subject to Landlord’s prior written consent. Tenant shall cause, at its expense, all Tenant-Made Alterations to comply with insurance requirements and with Legal Requirements and shall construct at its expense any alteration or modification required by Legal Requirements as a result of any Tenant-Made Alterations. All Tenant-Made Alterations shall be constructed in a good and workmanlike manner by contractors reasonably acceptable to Landlord and only good grades of materials shall be used. All plans and specifications for any Tenant-Made Alterations shall be submitted to Landlord for its approval. Landlord may monitor construction of the Tenant-Made Alterations. Tenant shall reimburse Landlord for its costs in reviewing plans and specifications and in monitoring construction. Landlord’s right to review plans and specifications and to monitor construction shall be solely for its own benefit, and Landlord shall have no duty to see that such plans and specifications or construction comply with applicable laws, codes, rules and regulations. Tenant shall provide Landlord with the identities and mailing addresses of all persons performing work or supplying materials, prior to beginning such construction, and Landlord may post on and about the Premises notices of non-responsibility pursuant to applicable law. Tenant shall furnish security or make other arrangements satisfactory to Landlord to assure payment for the completion of all work free and clear of liens and shall provide certificates of insurance for worker’s compensation and other coverage in amounts and from an insurance company satisfactory to Landlord protecting Landlord against liability for personal injury or property damage during construction. Upon completion of any Tenant-Made Alterations, Tenant shall deliver to Landlord sworn statements setting forth the names of all contractors and subcontractors who did work on the Tenant-Made Alterations and final lien waivers from all such contractors and subcontractors. Upon surrender of the Premises, all Tenant-Made Alterations and any leasehold improvements constructed by Landlord or Tenant shall remain on the Premises as Landlord’s property, except to the extent Landlord requires removal at Tenant’s expense of any such items or Landlord and Tenant have otherwise agreed in writing in connection with Landlord’s consent to any Tenant-Made Alterations. Tenant shall repair any damage caused by the removal of such Tenant-Made Alterations upon surrender of the Premises.

Tenant, at its own cost and expense and without Landlord’s prior approval, may erect such shelves, racking, bins, machinery and trade fixtures (collectively “Trade Fixtures”) in the ordinary course of its business provided that such items do not alter the basic character of the Premises, do not overload or damage the Premises, and may be removed without injury to the Premises, and the construction, erection, and installation thereof complies with all Legal Requirements and with Landlord’s requirements set forth above. Tenant shall remove its Trade Fixtures and shall repair any damage caused by such removal upon surrender of the Premises.

Notwithstanding the foregoing, Tenant shall not be required to obtain Landlord’s consent for repainting, recarpeting, or other alterations, tenant improvements, alterations or physical additions to the Premises which are cosmetic in nature totaling less than $10,000 in any single instance or series of related alterations performed within a six-month period (provided that Tenant shall not perform any improvements, alterations or additions to the Premises in stages as a means to subvert this provision), in each case provided that (A) Tenant delivers to Landlord written notice thereof, a list of contractors and subcontractors to perform the work (and certificates of insurance for each such party) and any plans and specifications therefor prior to commencing any such alterations, additions, or improvements (for informational purposes only so long as no consent is required by Landlord as required by this Lease), (B) the installation thereof does not involve any core drilling or the configuration or location of any exterior or interior walls of the Building, and (C) such alterations, additions and improvements will not affect (i) the Building’s structure or the Building’s systems, (ii) the provision of services to other Building tenants, or (iii) the appearance of the Building’s common areas or the exterior of the Building.

13. Signs. Tenant shall not make any changes to the exterior of the Premises, install any exterior lights, decorations, balloons, flags, pennants, banners, or painting, or erect or install any signs, windows or door lettering, placards, decorations, or advertising media of any type which can be viewed from the exterior of the Premises, without Landlord’s prior written consent, which consent may be withheld in Landlord’s sole discretion. Upon surrender or vacation of the Premises, Tenant shall have removed all signs and repair, paint, and/or replace the building fascia surface to which its signs are attached. Tenant shall obtain all applicable governmental permits and approvals for sign and exterior treatments. All signs, decorations, advertising media, blinds, draperies and other window treatment or bars or other security installations visible from outside the Premises shall be subject to Landlord’s approval and conform in all respects to Landlord’s requirements.

14. Parking. Tenant shall be entitled to park in common with other tenants of the Project in those areas designated for nonreserved parking. Landlord may allocate parking spaces among Tenant and other tenants in the Project if Landlord reasonably determines that such parking facilities are becoming crowded. Landlord shall not be responsible for enforcing Tenant’s parking rights against any third parties.

15. Restoration. If at any time during the Lease Term the Premises are damaged by a fire or other casualty. Landlord shall notify Tenant within 60 days after such damage as to the amount of time Landlord reasonably estimates it will take to restore the Premises. If the restoration time is estimated to exceed 6 months, either Landlord or Tenant may elect to terminate this Lease upon notice to the other party given no later than 30 days after Landlord’s notice. If neither party elects to terminate this Lease or if Landlord estimates that restoration will take 6 months or less, then, subject to receipt of sufficient insurance proceeds, Landlord shall

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promptly restore the Premises excluding the improvements installed by Tenant or by Landlord and paid by Tenant, subject to delays arising from the collection of insurance proceeds or from Force Majeure events. Tenant at Tenant’s expense shall promptly perform, subject to delays arising from the collection of insurance proceeds, or from Force Majeure events (as defined in Paragraph 33), all repairs or restoration not required to be done by Landlord and shall promptly reenter the Premises and commence doing business in accordance with this Lease. Notwithstanding the foregoing, either party may terminate this Lease if the Premises are damaged during the last year of the Lease Term and Landlord reasonably estimates that it will take more than one month to repair such damage. Base Rent and Operating Expenses shall be abated for the period of repair and restoration commencing on the date of such casualty event in the proportion which the area of the Premises, if any, which is not usable by Tenant bears to the total area of the Premises. Such abatement shall be the sole remedy of Tenant, and except as provided herein, Tenant waives any right to terminate the Lease by reason of damage or casualty loss.

Notwithstanding anything contained in the Lease to the contrary, to the extent the damage to the Project is attributable to Tenant, Tenant shall pay to Landlord, with respect to any damage to the Project. an amount equal to the commercially reasonable deductible under Landlord’s insurance policy, within 30 days after presentment of Landlord’s invoice.

16. Condemnation. If any part of the Premises or the Project should be taken for any public or quasi-public use under governmental law, ordinance, or regulation, or by right of eminent domain, or by private purchase in lieu thereof (a “Taking” or “Taken”), and the Taking would materially interfere with or impair Landlord’s ownership or operation of the Project, then upon written notice by Landlord this Lease shall terminate and Base Rent shall be apportioned as of said date. If part of the Premises shall be Taken, and this Lease is not terminated as provided above, the Base Rent payable hereunder during the unexpired Lease Term shall be reduced to such extent as may be fair and reasonable under the circumstances. In the event of any such Taking, Landlord shall be entitled to receive the entire price or award from any such Taking without any payment to Tenant, and Tenant hereby assigns to Landlord Tenant’s interest, if any, in such award. Tenant shall have the right, to the extent that same shall not diminish Landlord’s award, to make a separate claim against the condemning authority (but not Landlord) for such compensation as may be separately awarded or recoverable by Tenant for moving expenses and damage to Tenant’s Trade Fixtures, if a separate award for such items is made to Tenant.

17. Assignment and Subletting. Without Landlord’s prior written consent, which shall not be unreasonably withheld conditioned or delayed, Tenant shall not assign this Lease or sublease the Premises or any part thereof or mortgage, pledge, or hypothecate its leasehold interest or grant any concession or license within the Premises and any attempt to do any of the foregoing shall be void and of no effect. It shall be reasonable for the Landlord to withhold, delay or condition its consent, where required, to any assignment or sublease in any of the following instances: (a) the assignee or sublessee does not have a net worth calculated according to generally accepted accounting principles at least equal to the greater of the net worth of Tenant immediately prior to such assignment or sublease or the net worth of the Tenant at the time it executed the Lease; (b) occupancy of the Premises by the assignee or sublessee would, in Landlord’s opinion, violate any agreement binding upon Landlord or the Project with regard to the identity of tenants, usage in the Project, or similar matters; (c) the identity or business reputation of the assignee or sublessee will, in the good faith judgment of Landlord, tend to damage the goodwill or reputation of the Project; (d) the assignment or sublease is to another tenant in the Project and is at rates which are below those charged by Landlord for comparable space in the Project; or (e) in the case of a sublease, the subtenant has not acknowledged that the Lease controls over any inconsistent provision in the sublease. The foregoing criteria shall not exclude any other reasonable basis for Landlord to refuse its consent to such assignment or sublease. Any approved assignment or sublease shall be expressly subject to the terms and conditions of this Lease. Tenant shall provide to Landlord all information concerning the assignee or sublessee as Landlord may reasonably request. Landlord may revoke its consent immediately and without notice if, as of the effective date of the assignment or sublease, there has occurred and is continuing any default under the Lease. For purposes of this paragraph, a transfer of the ownership interests controlling Tenant shall be deemed an assignment of this Lease unless such ownership interests are publicly traded. Notwithstanding the above, Tenant may assign or sublet the Premises, or any part thereof, to any entity controlling Tenant, controlled by Tenant or under common control with Tenant (a “Tenant Affiliate”), without the prior written consent of Landlord. Tenant shall reimburse Landlord for all of Landlord’s reasonable expenses in connection with any assignment or sublease not to exceed $1,500.00. This Lease shall be binding upon Tenant and its successors and permitted assigns. Upon Landlord’s receipt of Tenant’s written notice of a desire to assign or sublet the Premises, or any part thereof (other than to a Tenant Affiliate), Landlord may, by giving written notice to Tenant within 30 days after receipt of Tenant’s notice, terminate this Lease with respect to the space described in Tenant’s notice, as of the date specified in Tenant’s notice for the commencement of the proposed assignment or sublease.

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Notwithstanding any assignment or subletting, Tenant and any guarantor or surety of Tenant’s obligations under this Lease shall at all times remain fully responsible and liable for the payment of the rent and for compliance with all of Tenant’s other obligations under this Lease (regardless of whether Landlord’s approval has been obtained for any such assignments or sublettings). In the event that the rent due and payable by a sublessee or assignee (or a combination of the rental payable under such sublease or assignment plus any bonus or other consideration therefor or incident thereto) exceeds the rental payable under this Lease, then Tenant shall be bound and obligated to pay Landlord as additional rent hereunder all such excess rental and other excess consideration within 10 days following receipt thereof by Tenant; provided in the event of a sublease which is less than 100% of the Premises such excess rental and other consideration shall be applied on a square foot basis.

If this Lease be assigned or if the Premises be subleased (whether in whole or in part) or in the event of the mortgage, pledge, or hypothecation of Tenant’s leasehold interest or grant of any concession or license within the Premises or if the Premises be occupied in whole or in part by anyone other than Tenant, then upon a default by Tenant hereunder Landlord may collect rent from the assignee, sublessee, mortgagee, pledgee, party to whom the leasehold interest was hypothecated, concessionee or licensee or other occupant and, except to the extent set forth in the preceding paragraph, apply the amount collected to the next rent payable hereunder; and all such rentals collected by Tenant shall be held in trust for Landlord and immediately forwarded to Landlord. No such transaction or collection of rent or application thereof by Landlord, however, shall be deemed a waiver of these provisions or a release of Tenant from the further performance by Tenant of its covenants, duties, or obligations hereunder.

18. Indemnification. To the extent permitted by law, Tenant agrees to indemnify, defend and hold harmless Landlord, and Landlord’s agents, employees and contractors (“Landlord Parties”), from and against any and all losses, liabilities, damages, costs and expenses (including attorneys’ fees) resulting from claims by third parties for injuries to any person and damage to or theft or misappropriation or loss of property occurring in or about the Building and arising from the use and occupancy of the Premises or from any activity, work, or thing done, permitted or suffered by Tenant in or about the Premises or due to any other act or omission of Tenant, its subtenants, assignees, invitees, employees, contractors and agents, (collectively “Claims”), even if such Claims are caused solely or in part by the negligence or any of the Landlord Parties but not to the extent caused by the gross negligence or willful misconduct of any such parties. The furnishing of insurance required hereunder shall not be deemed to limit Tenant’s obligations under this Paragraph 18.

19. Inspection and Access. Landlord and its agents, representatives, and contractors may enter the Premises at any reasonable time to inspect the Premises and to make such repairs as may be required or permitted pursuant to this Lease and for any other business purpose. Landlord and Landlord’s representatives may enter the Premises during business hours upon 24 hours’ prior notice (except in the event of an emergency) for the purpose of showing the Premises to prospective purchasers and, during the last six (6) months of the Lease Term, to prospective tenants. Landlord may erect a suitable sign on the Premises stating the Premises are available to let or that the Project is available for sale. Landlord may grant easements, make public dedications, designate and modify common areas and create restrictions on or about the Premises, provided that no such easement, dedication, designation, modification or restriction materially interferes with Tenant’s use or occupancy of the Premises. At Landlord’s request, Tenant shall execute such instruments as may be necessary for such easements, dedications or restrictions.

20. Quiet Enjoyment. If Tenant shall perform all of the covenants and agreements herein required to be performed by Tenant, Tenant shall, subject to the terms of this Lease, at all times during the Lease Term, have peaceful and quiet enjoyment of the Premises against any person claiming by, through or under Landlord.

21. Surrender. Upon termination of the Lease Term or earlier termination of Tenant’s right of possession, Tenant shall surrender the Premises to Landlord in the same condition as received ordinary wear and tear, casualty loss and condemnation covered by Paragraphs 15 and 16 excepted and otherwise in accordance with the Move Out Conditions Addendum attached hereto. Without limiting the foregoing, Tenant shall remove any odor which may exist in the Premises resulting from Tenant’s occupancy of the Premises upon the termination of the Lease Term or earlier termination of Tenant’s right of possession. Any Trade Fixtures, Tenant-Made Alterations and property not so removed by Tenant as permitted or required herein shall be deemed abandoned and may be stored, removed, and disposed of by Landlord at Tenant’s expense, and Tenant waives all claims against Landlord for any damages resulting from Landlord’s retention and disposition of such property. Tenant must, at Tenant’s sole cost, upon termination of this Lease, remove any and all data/telecommunications cabling and wiring installed by or on behalf of Tenant, whether inside walls, under any raised floor or above any ceiling. Tenant shall remain responsible for the cost of removal and disposal of any such cabling and wiring not so removed, as well as any damage caused by such removal. All obligations of Tenant hereunder not fully performed as of the termination of the Lease Term shall survive the termination of the Lease Term, including without limitation, indemnity obligations, payment obligations with respect to Operating Expenses and obligations concerning the condition and repair of the Premises.

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22. Holding Over. If Tenant retains possession of the Premises after the termination of the Lease Term, unless otherwise agreed in writing, such possession shall be subject to immediate termination by Landlord at any time, and all of the other terms and provisions of this Lease (excluding any expansion or renewal option or other similar right or option) shall be applicable during such holdover period, except that Tenant shall pay Landlord from time to time, upon demand, as Base Rent for the holdover period, an amount equal to 150% of the Base Rent in effect on the termination date, computed on a monthly basis for each month or part thereof during such holding over. All other payments shall continue under the terms of this Lease. In addition, Tenant shall be liable for all damages incurred by Landlord as a result of such holding over. No holding over by Tenant, whether with or without consent of Landlord, shall operate to extend this Lease except as otherwise expressly provided, and this Paragraph 22 shall not be construed as consent for Tenant to retain possession of the Premises. For purposes of this Paragraph 22, “possession of the Premises” shall continue until, among other things, Tenant has delivered all keys to the Premises to Landlord, Landlord has complete and total dominion and control over the Premises, and Tenant has completely fulfilled all obligations required of it upon termination of the Lease as set forth in this Lease, including, without limitation, those concerning the condition and repair of the Premises.

23. Events of Default. Each of the following events shall be an event of default (“Event of Default”) by Tenant under this Lease:

(a) Tenant shall fail to pay any installment of Base Rent or any other payment required herein when due, and such failure shall continue for a period of 5 days from the date such payment was due.

(b) Tenant or any guarantor or surety of Tenant’s obligations hereunder shall (i) make a general assignment for the benefit of creditors; (ii) commence any case, proceeding or other action seeking to have an order for relief entered on its behalf as a debtor or to adjudicate it as bankrupt or insolvent, or seeking reorganization, arrangement, adjustment, liquidation, dissolution or composition of it or its debts or seeking appointment of a receiver, trustee, custodian or other similar official for it or for all or of any substantial part of its property (collectively a “proceeding for relief”); (iii) become the subject of any proceeding for relief which is not dismissed within 60 days of its filing or entry; or (iv) die or suffer a legal disability (if Tenant, guarantor, or surety is an individual) or be dissolved or otherwise fail to maintain its legal existence (if Tenant, guarantor or surety is a corporation, partnership or other entity).

(c) Any insurance required to be maintained by Tenant pursuant to this Lease shall be cancelled or terminated or shall expire or shall be reduced or materially changed, except, in each case, as permitted in this Lease.

(d) Tenant shall not occupy or shall vacate the Premises whether or not Tenant is in monetary or other default under this Lease. Tenant’s vacating of the Premises shall not constitute an Event of Default if, prior to vacating the Premises, Tenant has made arrangements reasonably acceptable to Landlord to (i) ensure that Tenant’s insurance for the Premises will not be voided or cancelled with respect to the Premises as a result of such vacancy, (ii) ensure that the Premises are secured and not subject to vandalism, and (iii) ensure that the Premises will be properly maintained after such vacation, including, but not limited to, keeping the heating, ventilation and cooling systems maintenance contracts required by this Lease in full force and effect and maintaining the utility services. Tenant shall inspect the Premises at least once each month and report monthly in writing to Landlord on the condition of the Premises.

(e) Tenant shall attempt or there shall occur any assignment, subleasing or other transfer of Tenant’s interest in or with respect to this Lease except as otherwise permitted in this Lease.

(f) Tenant shall fail to discharge any lien placed upon the Premises in violation of this Lease within 20 days after any such lien or encumbrance is filed against the Premises.

(g) Tenant shall fail to comply with any provision of this Lease other than those specifically referred to in this Paragraph 23, and except as otherwise expressly provided herein, such default shall continue for more than 30 days after Landlord shall have given Tenant written notice of such default (said notice being in lieu of, and not in addition to, any notice required as a prerequisite to a forcible entry and detainer or similar action for possession of the Premises).

24. Landlord’s Remedies. Upon each occurrence of an Event of Default and so long as such Event of Default shall be continuing, Landlord may at any time thereafter at its election; terminate this Lease or Tenant’s right of possession, (but Tenant shall remain liable as hereinafter provided) and/or pursue any other remedies at law or in equity. Upon the termination of this Lease or termination of Tenant’s right of possession, it shall be lawful for Landlord, without formal demand or notice of any kind, to re-enter the Premises by summary dispossession proceedings or any other action or proceeding authorized by law and to remove Tenant and all persons and property therefrom. If Landlord re-enters the Premises, Landlord shall have the right to keep in place and use, or remove and store, all of the furniture, fixtures and equipment at the Premises.

If Landlord terminates this Lease, Landlord may recover from Tenant the sum of: all Base Rent and all other amounts accrued hereunder to the date of such termination; the value of the Base Rent for any periods of abated Monthly Base Rent based on the Monthly Base Rent amount that immediately follows such period of abatement; the cost of reletting the whole or any part of the Premises, including without limitation brokerage fees and/or leasing commissions incurred by Landlord, and costs of removing and

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storing Tenant’s or any other occupant’s property, repairing, altering, remodeling, or otherwise putting the Premises into condition acceptable to a new tenant or tenants, and all reasonable expenses incurred by Landlord in pursuing its remedies, including reasonable attorneys’ fees and court costs; and the excess of the then present value of the Base Rent and other amounts payable by Tenant under this Lease as would otherwise have been required to be paid by Tenant to Landlord during the period following the termination of this Lease measured from the date of such termination to the expiration date stated in this Lease, over the present value of any net amounts which Tenant establishes Landlord can reasonably expect to recover by reletting the Premises for such period, taking into consideration the availability of acceptable tenants and other market conditions affecting leasing. Such present values shall be calculated at a discount rate equal to the 90-day U.S. Treasury bill rate at the date of such termination.

If Landlord terminates Tenant’s right of possession (but not this Lease), Landlord may, but shall be under no obligation to, relet the Premises for the account of Tenant for such rent and upon such terms as shall be satisfactory to Landlord without thereby releasing Tenant from any liability hereunder and without demand or notice of any kind to Tenant. For the purpose of such reletting Landlord is authorized to make any repairs, changes, alterations, or additions in or to the Premises as Landlord deems reasonably necessary or desirable. If the Premises are not relet, then Tenant shall pay to Landlord as damages a sum equal to the amount of the rental reserved in this Lease for such period or periods, plus the cost of recovering possession of the Premises (including attorneys’ fees and costs of suit), the unpaid Base Rent and other amounts accrued hereunder at the time of repossession, and the costs incurred in any attempt by Landlord to relet the Premises. If the Premises are relet and a sufficient sum shall not be realized from such reletting [after first deducting therefrom, for retention by Landlord, the unpaid Base Rent and other amounts accrued hereunder at the time of reletting, the cost of recovering possession (including attorneys’ fees and costs of suit), all of the costs and expense of repairs, changes, alterations, and additions, the expense of such reletting (including without limitation brokerage fees and leasing commissions) and the cost of collection of the rent accruing therefrom] to satisfy the rent provided for in this Lease to be paid, then Tenant shall immediately satisfy and pay any such deficiency. Any such payments due Landlord shall be made upon demand therefor from time to time and Tenant agrees that Landlord may file suit to recover any sums falling due from time to time. Notwithstanding any such reletting without termination, Landlord may at any time thereafter elect in writing to terminate this Lease for such previous breach.

Exercise by Landlord of any one or more remedies hereunder granted or otherwise available shall not be deemed to be an acceptance of surrender of the Premises and/or a termination of this Lease by Landlord, whether by agreement or by operation of law, it being understood that such surrender and/or termination can be effected only by the written agreement of Landlord and Tenant. Any law, usage, or custom to the contrary notwithstanding, Landlord shall have the right at all times to enforce the provisions of this Lease in strict accordance with the terms hereof; and the failure of Landlord at any time to enforce its rights under this Lease strictly in accordance with same shall not be construed as having created a custom in any way or manner contrary to the specific terms, provisions, and covenants of this Lease or as having modified the same. Tenant and Landlord further agree that forbearance or waiver by Landlord to enforce its rights pursuant to this Lease or at law or in equity, shall not be a waiver of Landlord’s right to enforce one or more of its rights in connection with any subsequent default. A receipt by Landlord of rent or other payment with knowledge of the breach of any covenant hereof shall not be deemed a waiver of such breach, and no waiver by Landlord of any provision of this Lease shall be deemed to have been made unless expressed in writing and signed by Landlord. To the greatest extent permitted by law, Tenant waives the service of notice of Landlord’s intention to re-enter as provided for in any statute, or to institute legal proceedings to that end, and also waives all right of redemption in case Tenant shall be dispossessed by a judgment or by warrant of any court or judge. The terms “enter,” “re-enter,” “entry” or “re-entry,” as used in this Lease, are not restricted to their technical legal meanings. Any reletting of the Premises shall be on such terms and conditions as Landlord in its sole discretion may determine (including without limitation a term different than the remaining Lease Term, rental concessions, alterations and repair of the Premises, lease of less than the entire Premises to any tenant and leasing any or all other portions of the Project before reletting the Premises). Landlord shall not be liable for, and Tenant’s obligations hereunder shall not be diminished because of, Landlord’s failure to relet the Premises or collect rent due in respect of such reletting.

25. Tenant's Remedies/Limitation of Liability.  Landlord shall not be in default hereunder unless Landlord fails to perform any of its obligations hereunder within 30 days after written notice from Tenant specifying such failure (unless such performance will, due to the nature of the obligation, require a period of time in excess of 30 days, then after such period of time as is reasonably necessary).  All obligations of Landlord hereunder shall be construed as covenants, not conditions; and, except as may be otherwise expressly provided in this Lease, Tenant may not terminate this Lease for breach of Landlord's obligations hereunder. All obligations of Landlord under this Lease will be binding upon Landlord only during the period of its ownership of the Premises and not thereafter. The term “Landlord” in this Lease shall mean only the owner, for the time being, of the Premises, and in the event of the transfer by such owner of its interest in the Premises, such owner shall thereupon be released and discharged from all obligations of Landlord thereafter accruing, but such obligations shall be binding during the Lease Term upon each new owner for the duration of such owner's ownership. Any liability of Landlord under this Lease shall be limited solely to its interest in the Project, and in no event shall any personal liability be asserted against Landlord in connection with this Lease nor shall any recourse be had to any other property or assets of Landlord.

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26. Landlord’s Lien/Security Interest. Tenant hereby grants Landlord a security interest, and this Lease constitutes a security agreement, within the meaning of and pursuant to the Uniform Commercial Code of the state in which the Premises are situated as to all of Tenant’s property situated in, or upon, or used in connection with the Premises (except merchandise sold in the ordinary course of business) as security for all of Tenant’s obligations hereunder, including, without limitation, the obligation to pay rent. Such personalty thus encumbered includes specifically all trade and other fixtures for the purpose of this Paragraph and inventory, equipment, contract rights, accounts receivable and the proceeds thereof. In order to perfect such security interest, Tenant shall execute such financing statements and file the same at Tenant’s expense at the state and county Uniform Commercial Code filing offices as often as Landlord in its discretion shall require; and Tenant hereby irrevocably appoints Landlord its agent for the purpose of executing and filing such financing statements on Tenant’s behalf as Landlord shall deem necessary.

27. Subordination. This Lease and Tenant’s interest and rights hereunder are and shall be subject and subordinate at all times to the lien of any first mortgage, now existing or hereafter created on or against the Project or the Premises, and all amendments, restatements, renewals, modifications, consolidations, refinancing, assignments and extensions thereof, without the necessity of any further instrument or act on the part of Tenant. Tenant agrees, at the election of the holder of any such mortgage, to attorn to any such holder. Tenant agrees upon demand to execute, acknowledge and deliver such instruments, confirming such subordination and such instruments of attornment as shall be requested by any such holder. Notwithstanding the foregoing, any such holder may at any time subordinate its mortgage to this Lease, without Tenant’s consent, by notice in writing to Tenant, and thereupon this Lease shall be deemed prior to such mortgage without regard to their respective dates of execution, delivery or recording and in that event such holder shall have the same rights with respect to this Lease as though this Lease had been executed prior to the execution, delivery and recording of such mortgage and had been assigned to such holder. The term “mortgage” whenever used in this Lease shall be deemed to include deeds of trust, security assignments and any other encumbrances, and any reference to the “holder” of a mortgage shall be deemed to include the beneficiary under a deed of trust.

28. Mechanic’s Liens. Tenant has no express or implied authority to create or place any lien or encumbrance of any kind upon, or in any manner to bind the interest of Landlord or Tenant in, the Premises or to charge the rentals payable hereunder for any claim in favor of any person dealing with Tenant, including those who may furnish materials or perform labor for any construction or repairs. Tenant covenants and agrees that it will pay or cause to be paid all sums legally due and payable by it on account of any labor performed or materials furnished in connection with any work performed on the Premises and that it will save and hold Landlord harmless from all loss, cost or expense based on or arising out of asserted claims or liens against the leasehold estate or against the interest of Landlord in the Premises or under this Lease. Tenant shall give Landlord immediate written notice of the placing of any lien or encumbrance against the Premises and cause such lien or encumbrance to be discharged within 20 days of the filing or recording thereof; provided, however, Tenant may contest such liens or encumbrances as long as such contest prevents foreclosure of the lien or encumbrance and Tenant causes such lien or encumbrance to be bonded or insured over in a manner satisfactory to Landlord within such 20 day period.

29. Estoppel Certificates. Tenant agrees, from time to time, within 10 days after request of Landlord, to execute and deliver to Landlord, or Landlord’s designee, any estoppel certificate requested by Landlord, stating that this Lease is in full force and effect, the date to which rent has been paid, that Landlord is not in default hereunder (or specifying in detail the nature of Landlord’s default), the termination date of this Lease and such other matters pertaining to this Lease as may be requested by Landlord. Tenant’s obligation to furnish each estoppel certificate in a timely fashion is a material inducement for Landlord’s execution of this Lease. No cure or grace period provided in this Lease shall apply to Tenant’s obligations to timely deliver an estoppel certificate.

30. Environmental Requirements. Except for Hazardous Material contained in products used by Tenant in de minimis quantities for ordinary cleaning and office purposes, and except for Hazardous Materials contained in products stored and/or distributed during Tenant’s normal course of business in their original, sealed, and unopened containers, Tenant shall not permit or cause any party to bring any Hazardous Material upon the Premises or transport, store, use, generate, manufacture or release any Hazardous Material in or about the Premises without Landlord’s prior written consent. Tenant, at its sole cost and expense, shall operate its business in the Premises in strict compliance with all Environmental Requirements and shall remediate in a manner satisfactory to Landlord any Hazardous Materials released on or from the Project by Tenant, its agents, employees, contractors, subtenants or invitees. Tenant shall complete and certify to disclosure statements as requested by Landlord from time to time relating to Tenant’s transportation, storage, use, generation, manufacture or release of Hazardous Materials on the Premises. The tent “Environmental Requirements” means all applicable present and future statutes, regulations, ordinances, rules, codes, judgments, orders or other similar enactments of any governmental authority or agency regulating or relating to health, safety, or environmental conditions on, under, or about the Premises or the environment, including without limitation, the following: the Comprehensive Environmental Response, Compensation and Liability Act; the Resource Conservation and Recovery Act; and all state and local counterparts thereto, and any regulations or policies promulgated or issued thereunder. The term “Hazardous Materials” means and includes any substance, material, waste, pollutant, or contaminant listed or defined as hazardous or toxic, under any Environmental Requirements, asbestos and petroleum, including crude oil or any fraction thereof, natural gas liquids, liquefied natural gas, or synthetic gas usable for fuel (or mixtures of natural gas and such synthetic gas). As defined in Environmental Requirements, Tenant is

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and shall be deemed to be the “operator” of Tenant’s “facility” and the “owner” of all Hazardous Materials brought on the Premises by Tenant, its agents, employees, contractors or invitees, and the wastes, by-products, or residues generated, resulting, or produced therefrom. No cure or grace period provided in this Lease shall apply to Tenant’s obligations to comply with the terms and conditions of this Paragraph 30.

Notwithstanding anything to the contrary in this Paragraph 30, Tenant shall have no liability of any kind to Landlord as to Hazardous Materials on the Premises caused or permitted by (a) Landlord, its agents, employees, contractors or invitees; or (b) any other tenants in the Project or their agents, employees, contractors, subtenants, assignees or invitees.

Tenant shall indemnify, defend, and hold Landlord harmless from and against any and all losses (including, without limitation, diminution in value of the Premises or the Project and loss of rental income from the Project), claims, demands, actions, suits, damages (including, without limitation, punitive damages), expenses (including, without limitation, remediation, removal, repair, corrective action, or cleanup expenses), and costs (including, without limitation, actual attorneys’ fees, consultant fees or expert fees and including, without limitation, removal or management of any asbestos brought into the property or disturbed in breach of the requirements of this Paragraph 30, regardless of whether such removal or management is required by law) which are brought or recoverable against, or suffered or incurred by Landlord as a result of any release of Hazardous Materials for which Tenant is obligated to remediate as provided above or any other breach of the requirements under this Paragraph 30 by Tenant, its agents, employees, contractors, subtenants, assignees or invitees, regardless of whether Tenant had knowledge of such noncompliance. The obligations of Tenant under this Paragraph 30 shall survive any termination of this Lease.

Landlord shall have access to, and a right to perform inspections and tests of, the Premises to determine Tenant’s compliance with Environmental Requirements, its obligations under this Paragraph 30, or the environmental condition of the Premises. Access shall be granted to Landlord upon Landlord’s prior notice to Tenant and at such times so as to minimize, so far as may be reasonable under the circumstances, any disturbance to Tenant’s operations. Such inspections and tests shall be conducted at Landlord’s expense, unless such inspections or tests reveal that Tenant has not complied with any Environmental Requirement, in which case Tenant shall reimburse Landlord for the reasonable cost of such inspection and tests. Landlord’s receipt of or satisfaction with any environmental assessment in no way waives any rights that Landlord holds against Tenant.

31. Rules and Regulations. Tenant shall, at all times during the Lease Term and any extension thereof, comply with all reasonable rules and regulations at any time or from time to time established by Landlord covering use of the Premises and the Project. The current Project rules and regulations are attached hereto as Exhibit B. In the event of any conflict between said rules and regulations and other provisions of this Lease, the other terms and provisions of this Lease shall control. Landlord shall not have any liability or obligation for the breach of any rules or regulations by other tenants in the Project.

32. Security Service. Tenant acknowledges and agrees that, while Landlord may patrol the Project, Landlord is not providing any security services with respect to the Premises and that Landlord shall not be liable to Tenant for, and Tenant waives any claim against Landlord with respect to, any loss by theft or any other damage suffered or incurred by Tenant in connection with any unauthorized entry into the Premises or any other breach of security with respect to the Premises.

33. Force Majeure. Landlord shall not be held responsible for delays in the performance of its obligations hereunder when caused by strikes, lockouts, labor disputes, acts of God, inability to obtain labor or materials or reasonable substitutes therefor, governmental restrictions, governmental regulations, governmental controls, delay in issuance of permits, enemy or hostile governmental action, civil commotion, fire or other casualty, and other causes beyond the reasonable control of Landlord (“Force Majeure”).

34. Entire Agreement/Disclaimer of Reliance on Representations. This Lease constitutes the complete agreement of Landlord and Tenant with respect to the subject matter hereof. No representations, inducements, promises or agreements, oral or written, have been made by Landlord or Tenant, or anyone acting on behalf of Landlord or Tenant, which are not contained herein, and any prior agreements, promises, negotiations, or representations are superseded by this Lease. This Lease may not be amended except by an instrument in writing signed by both parties hereto. Each of the parties to this Lease has executed this Lease relying solely on its own judgment with the benefit of the advice of its own attorneys and/or brokers (or having decided to proceed without benefit of the advice of its own attorneys and/or brokers), and each party hereby disclaims reliance upon any statement or representation of the other party or any agent of such other party unless such statement or representation is expressly set forth in this Lease.

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35. Severability. If any clause or provision of this Lease is illegal, invalid or unenforceable under present or future laws, then and in that event, it is the intention of the parties hereto that the remainder of this Lease shall not be affected thereby. It is also the intention of the parties to this Lease that in lieu of each clause or provision of this Lease that is illegal, invalid or unenforceable, there be added, as a part of this Lease, a clause or provision as similar in terms to such illegal, invalid or unenforceable clause or provision as may be possible and be legal, valid and enforceable.

36. Brokers. Tenant represents and warrants that it has dealt with no broker, agent or other person in connection with this transaction and that no broker, agent or other person brought about this transaction, other than Tenant's Broker and Landlord’s Broker, and Tenant agrees to indemnify and hold Landlord harmless from and against any claims by any other broker, agent or other person claiming a commission or other form of compensation by virtue of having dealt with Tenant with regard to this leasing transaction.

37. Miscellaneous.

(a) Any payments or charges due from Tenant to Landlord hereunder shall be considered rent for all purposes of this Lease.

(b) If and when included within the term “Tenant,” as used in this instrument, there is more than one person, firm or corporation, each shall be jointly and severally liable for the obligations of Tenant.

(c) All notices required or permitted to be given under this Lease shall be in writing and shall be sent by registered or certified mail, return receipt requested, or by a reputable national overnight courier service, postage prepaid, or by hand delivery addressed to Landlord at c/o Holt Lunsford Commercial, Attn: Lauri Fowler, 5055 Keller Springs Road, Suite 300, Addison, Texas 75001. Either party may by notice given aforesaid change its address for all subsequent notices or add an additional party to be copied on all subsequent notices. Except where otherwise expressly provided to the contrary, notice shall be deemed given three (3) days after being deposited in the United States mail or immediately upon tender by personal delivery or by a contract delivery service to the addressee at its address set forth in this Lease, or at such other address as it has then last specified by written notice delivered in accordance with this Paragraph 37, whether or not actually accepted or received by the addressee.

(d) Except as otherwise expressly provided in this Lease or as otherwise required by law, Landlord retains the absolute right to withhold any consent or approval.

(e) At Landlord’s request from time to time Tenant shall furnish Landlord with true and complete copies of its most recent annual and quarterly financial statements prepared by Tenant or Tenant’s accountants and any other financial information or summaries that Tenant typically provides to its lenders or shareholders.

(f) Neither this Lease nor a memorandum of lease shall be filed by or on behalf of Tenant in any public record. Landlord may prepare and file, and upon request by Landlord Tenant will execute, a memorandum of lease.

(g) The normal rule of construction to the effect that any ambiguities are to be resolved against the drafting party shall not be employed in the interpretation of this Lease or any exhibits or amendments hereto.

(h) The submission by Landlord to Tenant of this Lease shall have no binding force or effect, shall not constitute an option for the leasing of the Premises, nor confer any right or impose any obligations upon either party until execution of this Lease by both parties.

(i) Words of any gender used in this Lease shall be held and construed to include any other gender, and words in the singular number shall be held to include the plural, unless the context otherwise requires. The captions inserted in this Lease are for convenience only and in no way define, limit or otherwise describe the scope or intent of this Lease, or any provision hereof, or in any way affect the interpretation of this Lease.

(j) Any amount not paid by Tenant within 5 days after its due date in accordance with the terms of this Lease shall bear interest from such due date until paid in full at the lesser of the highest rate permitted by applicable law or 10 percent per year. It is expressly the intent of Landlord and Tenant at all times to comply with applicable law governing the maximum rate or amount of any interest payable on or in connection with this Lease. If applicable law is ever judicially interpreted so as to render usurious any interest called for under this Lease, or contracted for, charged, taken, reserved, or received with respect to this Lease, then it is Landlord’s and Tenant’s express intent that all excess amounts theretofore collected by Landlord be credited on the applicable obligation (or, if the obligation has been or would thereby be paid in full, refunded to Tenant), and the provisions of this Lease immediately shall be deemed reformed and the amounts thereafter collectible hereunder reduced, without the necessity of the execution of any new document, so as to comply with the applicable law, but so as to permit the recovery of the fullest amount otherwise called for hereunder.

(k) Construction and interpretation of this Lease shall be governed by the laws of the state in which the Project is located, excluding any principles of conflicts of laws.

(l) Time is of the essence as to the performance of Tenant's and Landlord's obligations under this Lease.

- 13 -

(m) All exhibits and addenda attached hereto are hereby incorporated into this Lease and made a part hereof. In the event of any conflict between such exhibits or addenda and the terms of this Lease, such exhibits or addenda shall control.

(n) In the event either party hereto initiates litigation to enforce the terms and provisions of this Lease, the non-prevailing party in such action shall reimburse the prevailing party for its reasonable attorney's fees, filing fees, and court costs.

(o) Tenant agrees and understands that Landlord shall have the right (provided that the exercise of Landlord's rights does not adversely affect Tenant's use and occupancy of the Premises or subject Tenant to additional costs), without Tenant's consent, to place a solar electric generating system on the roof of the Building or enter into a lease for the roof of the Building whereby such roof tenant shall have the right to install a solar electric generating system on the roof of the Building.

(p) This Lease may be executed in any number of counterparts, each of which shall be deemed to be an original, and all of such counterparts shall constitute one Lease. Execution copies of this Lease may be delivered by facsimile or email, and the parties hereto agree to accept and be bound by facsimile signatures or scanned signatures transmitted via email hereto, which signatures shall be considered as original signatures with the transmitted Lease having the same binding effect as an original signature on an original Lease. At the request of either party, any facsimile document or scanned document transmitted via email is to be re-executed in original form by the party who executed the original facsimile document or scanned document. Neither party may raise the use of a facsimile machine or scanned document or the fact that any signature was transmitted through the use of a facsimile machine or email as a defense to the enforcement of this Lease.

38. Limitation of Liability of Trustees, Shareholders, and Officers of Landlord. Any obligation or liability whatsoever of Landlord which may arise at any time under this Lease or any obligation or liability which may be incurred by it pursuant to any other instrument, transaction, or undertaking contemplated hereby shall not be personally binding upon, nor shall resort for the enforcement thereof be had to the property of, its trustees, directors, shareholders, officers, employees or agents, regardless of whether such obligation or liability is in the nature of contract, tort, or otherwise.

39. WAIVER OF JURY TRIAL. TENANT AND LANDLORD WAIVE ANY RIGHT TO TRIAL BY JURY OR TO HAVE A JURY PARTICIPATE IN RESOLVING ANY DISPUTE, WHETHER SOUNDING IN CONTRACT, TORT, OR OTHERWISE, BETWEEN LANDLORD AND TENANT ARISING OUT OF THIS LEASE OR ANY OTHER INSTRUMENT, DOCUMENT, OR AGREEMENT EXECUTED OR DELIVERED IN CONNECTION HEREWITH OR THE TRANSACTIONS RELATED HERETO.

40. Determination of Charges. Landlord and Tenant agree that each provision of this Lease for determining charges and amounts payable by Tenant (including provisions regarding Tenant's Proportionate Share of Taxes and Operating Expenses) is commercially reasonable and, as to each such charge or amount, constitutes a statement of the amount of the charge or a method by which the charge is to be computed for purposes of Section 93.012 of the Texas Property Code.

41. Prohibited Persons and Transactions. Tenant represents and warrants to Landlord that Tenant is currently in compliance with and shall at all times during the Lease Term (including any extension thereof) remain in compliance with the regulations of the Office of Foreign Asset Control (“OFAC”) of the Department of the Treasury (including those named on OFAC’s Specially Designated Nationals and Blocked Persons List) and any statute, executive order (including the September 24, 2001, Executive Order Blocking Property and Prohibiting Transactions with Persons Who Commit, Threaten to Commit, or Support Terrorism), or other governmental action relating thereto.

42. Deceptive Trade Practices. TENANT HEREBY WAIVES ALL ITS RIGHTS UNDER THE DECEPTIVE TRADE PRACTICES — CONSUMER PROTECTION ACT, SECTION 17.41 ET SEQ. OF THE TEXAS BUSINESS AND COMMERCE CODE, A LAW THAT GIVES CONSUMERS SPECIAL RIGHTS AND PROTECTIONS. AFTER CONSULTATION WITH AN ATTORNEY OF TENANT'S OWN SELECTION, TENANT VOLUNTARILY CONSENTS TO THIS WAIVER.

- 14 -

IN WITNESS WHEREOF, Landlord and Tenant have executed this Lease as of the day and year first above written.

TENANT:

INOGEN, INC.,

a Delaware corporation

LANDLORD:

TCIT DALLAS INDUSTRIAL, INC.,

a Delaware corporation

- 15 -

ADDENDUM 1

BASE RENT ADJUSTMENTS

ATTACHED TO AND A PART OF THE LEASE AGREEMENT

DATED DECEMBER 4, 2014, BETWEEN

TCIT DALLAS INDUSTRIAL, INC.

and

INOGEN, INC.

Base Rent shall equal the following amounts for the respective periods set forth below:

- 16 -

ADDENDUM 2

HVAC MAINTENANCE CONTRACT

ATTACHED TO AND A PART OF THE LEASE AGREEMENT

DATED DECEMBER 4, 2014, BETWEEN

TCIT DALLAS INDUSTRIAL, INC.

and

INOGEN, INC.

Paragraph 11, captioned “TENANT REPAIRS,” is revised to include the following:

Tenant agrees to enter into and maintain through the term of the Lease, a regularly scheduled preventative maintenance/service contract for servicing all hot water, heating and air conditioning systems and equipment serving the Premises. Landlord requires a qualified HVAC contractor perform this work. A certificate must be provided to the Landlord upon occupancy of the leased Premises.

The service contract must become effective within thirty (30) days of occupancy, and service visits shall be performed on a quarterly basis. Landlord suggests that Tenant send the following list to a qualified HVAC contractor to be assured that these items are included in the maintenance contract:

1. Adjust belt tension;

2. Lubricate all moving parts, as necessary;

3. Inspect and adjust all temperature and safety controls;

4. Check refrigeration system for leaks and operation;

5. Check refrigeration system for moisture;

6. Inspect compressor oil level and crank case heaters;

7. Check head pressure, suction pressure and oil pressure;

8. Inspect air filters and replace when necessary;

9. Check space conditions;

10. Check condensate drains and drain pans and clean, if necessary;

11. Inspect and adjust all valves;

12. Check and adjust dampers;

13. Run machine through complete cycle.

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ADDENDUM 3

MOVE-OUT CONDITIONS

ATTACHED TO AND A PART OF THE LEASE AGREEMENT

DATED DECEMBER 4, 2014, BETWEEN

TCIT DALLAS INDUSTRIAL, INC.

and

INOGEN, INC.

With respect to Paragraph 21 of the Lease, Tenant shall surrender the Premises in the same condition as received, ordinary wear and tear, casualty loss, and condemnation covered by Paragraphs 15 and 16 excepted.

Before surrendering the Premises, Tenant shall remove all of its personal property and trade fixtures and such alterations or additions to the Premises made by Tenant as may be specified for removal thereof. If Tenant fails to remove its personal property and fixtures upon the expiration or earlier termination of this Lease, the same shall be deemed abandoned and shall become the property of the Landlord. The following list is designed to assist Tenant in the move-out procedures but is not intended to be all inclusive:

- 18 -

- 19 -

EXHIBIT A

SITE PLAN

ATTACHED TO AND A PART OF THE LEASE AGREEMENT

DATED DECEMBER 4, 2014, BETWEEN

TCIT DALLAS INDUSTRIAL, INC.

and

INOGEN,

INC.

- 20 -

- 21 -

EXHIBIT B

PROJECT RULES AND REGULATIONS

ATTACHED TO AND A PART OF THE LEASE AGREEMENT

DATED DECEMBER 4, 2014, BETWEEN

TCIT DALLAS INDUSTRIAL, INC.

and

INOGEN, INC.

Rules and Regulations

- 22 -

- 23 -

EXHIBIT C

FORM OF COMMENCEMENT DATE CERTIFICATE

ATTACHED TO AND A PART OF THE LEASE AGREEMENT

DATED DECEMBER 4, 2014, BETWEEN

TCIT DALLAS INDUSTRIAL, INC.

and

INOGEN, INC.

COMMENCEMENT DATE CERTIFICATE

            , 201  

Notice Contact Name

Company Name

Notice Street Address

City, State Zip Code

RE: Lease dated Date between Customer & Owner for Premises Address

Dear Salutation Notice Contact Last Name:

Welcome to your new facility. We would like to confirm the terms of the above referenced lease agreement:

We are pleased to welcome you as a customer and look forward to working with you. Please indicate your agreement with the above changes to your lease by signing and returning the enclosed copy of this letter to me. If I can be of service, please do not hesitate to contact me.

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EXHIBIT D

WORK LETTER

ATTACHED TO AND A PART OF THE LEASE AGREEMENT

DATED DECEMBER 4, 2014, BETWEEN

TCIT DALLAS INDUSTRIAL, INC.

and

INOGEN, INC.

TENANT FINISH-WORK: WORK OF LIMITED SCOPE (NO PLANS)

(Landlord Performs the Work)

1. Acceptance of Premises. Except as set forth in this Exhibit, Tenant accepts the Premises in their “AS-IS” condition on the date that this Lease is entered into.

2. Space Plans.

(a) Preparation and Delivery. Within two business days after Tenant’s execution of this Lease, Tenant shall meet with a design consultant selected by Landlord (the “Architect”) to discuss the nature and extent of all improvements that Tenant proposes to install in the Premises and, at such meeting, provide the Architect with all necessary data and information needed by the Architect to prepare initial space plans therefor as required by this paragraph. On or before the tenth day following the date of this Lease, Landlord shall deliver to Tenant a space plan prepared by the Architect depicting improvements to be installed in the Premises (the “Space Plans”).

(b) Approval Process. Tenant shall notify Landlord whether it approves of the submitted Space Plans within three business days after Landlord’s submission thereof. If Tenant disapproves of such Space Plans, then Tenant shall notify Landlord thereof specifying in reasonable detail the reasons for such disapproval, in which case Landlord shall, within three business days after such notice, revise such Space Plans in accordance with Tenant’s objections and submit to Tenant for its review and approval. Tenant shall notify Landlord in writing whether it approves of the resubmitted Space Plans within one business day after its receipt thereof. This process shall be repeated until the Space Plans have been finally approved by Tenant and Landlord. If Tenant fails to notify Landlord that it disapproves of the initial Space Plans within three business days (or, in the case of resubmitted Space Plans, within one business day) after the submission thereof, then Tenant shall be deemed to have approved the Space Plans in question.

3. Working Drawings.

(a) Preparation and Delivery. On or before the date which is 15 days following the date on which the Space Plans are approved (or deemed approved) by Tenant and Landlord, Landlord shall cause to be prepared final working drawings of all improvements to be installed in the Premises and deliver the same to Tenant for its review and approval (which approval shall not be unreasonably withheld, delayed or conditioned).

(b) Approval Process. Tenant shall notify Landlord whether it approves of the submitted working drawings within three business days after Landlord’s submission thereof. If Tenant disapproves of such working drawings, then Tenant shall notify Landlord thereof specifying in reasonable detail the reasons for such disapproval, in which case Landlord shall, within five business days after such notice, revise such working drawings in accordance with Tenant’s objections and submit the revised working drawings to Tenant for its review and approval. Tenant shall notify Landlord in writing whether it approves of the resubmitted working drawings within one business day after its receipt thereof. This process shall be repeated until the working drawings have been finally approved by Landlord and Tenant. If Tenant fails to notify Landlord that it disapproves of the initial working drawings within three business days (or, in the case of resubmitted working drawings, within one business day) after the submission thereof, then Tenant shall be deemed to have approved the working drawings in question.

(c) Landlord’s Approval; Performance of Work. If any of Tenant’s proposed construction work will affect the Building’s structure or the Building’s systems, then the working drawings pertaining thereto must be approved by the Building’s engineer of record. Landlord’s approval of such working drawings shall not be unreasonably withheld, provided that (i) they comply with all laws, (ii) the improvements depicted thereon do not adversely affect (in the reasonable discretion of Landlord) the Building’s structure or the Building’s systems (including the Building’s restrooms or mechanical rooms), the exterior appearance of the Building, or the appearance of the Building’s common areas, (iii) such working drawings are sufficiently detailed to allow construction of the improvements in a good and workmanlike manner, and (iv) the improvements depicted thereon conform to the rules and regulations promulgated from time to time by Landlord for the construction of tenant improvements (a copy of which has been delivered to

- 25 -

Tenant). As used herein, “Working Drawings” means the final working drawings approved by Landlord, as amended from time to time by any approved changes thereto, and “Work” means all improvements to be constructed in accordance with and as indicated on the Working Drawings, together with any work required by governmental authorities to be made to other areas of the Building as a result of the improvements indicated by the Working Drawings. In addition, the Work must include all work required to demise the Premises and split the utilities serving the Premises from the adjacent space in the Building. Landlord’s approval of the Working Drawings shall not be a representation or warranty of Landlord that such drawings are adequate for any use or comply with any Law, but shall merely be the consent of Landlord thereto. Tenant shall, at Landlord’s request, sign the Working Drawings to evidence its review and approval thereof. After the Working Drawings have been approved, Landlord shall cause the Work to be performed in substantial accordance with the Working Drawings.

4. Bidding of Work. Prior to commencing the Work, Landlord shall competitively bid the Work to three contractors approved by Landlord. If the estimated Total Construction Costs are expected to exceed the Construction Allowance, Tenant shall be allowed to review the submitted bids from such contractors to value engineer any of Tenant’s requested alterations. In such case, Tenant shall notify Landlord of any items in the Working Drawings that Tenant desires to change within two business days after Landlord’s submission thereof to Tenant. if Tenant fails to notify Landlord of its election within such two business day period, Tenant shall be deemed to have approved the bids. Within five business days following Landlord’s submission of the initial construction bids to Tenant under the foregoing provisions (if applicable), Tenant shall have completed all of the following items: (a) finalized with Landlord’s representative and the proposed contractor, the pricing of any requested revisions to the bids for the Work, and (b) approved in writing any overage in the Total Construction Costs in excess of the Construction Allowance.

5. Change Orders. Tenant may initiate changes in the Work. Each such change must receive the prior written approval of Landlord, such approval not to be unreasonably withheld or delayed; however, if such requested change would adversely affect (in the reasonable discretion of Landlord) (a) the Building’s structure or the Building’s systems (including the Building’s restrooms or mechanical rooms), (b) the exterior appearance of the Building, or (c) the appearance of the Building’s common areas, Landlord may withhold its consent in its sole and absolute discretion. Landlord shall, upon completion of the Work, cause to be prepared an accurate architectural “as-built” plan of the Work as constructed, which plan shall be incorporated into this Exhibit by this reference for all purposes. If Tenant requests any changes to the Work described in the Space Plans or the Working Drawings, then such increased costs and any additional design costs incurred in connection therewith as the result of any such change shall be added to the Total Construction Costs.

6. Definitions. As used herein “Substantial Completion,” “Substantially Completed” and any derivations thereof mean the Work in the Premises is substantially completed (as reasonably determined by Landlord) in substantial accordance with the Working Drawings. Substantial Completion shall have occurred even though minor details of construction, decoration, landscaping and mechanical adjustments remain to be completed by Landlord.

7. Walk-Through; Punchlist. When Landlord considers the Work in the Premises to be Substantially Completed, Landlord will notify Tenant and, within three business days thereafter, Landlord’s representative and Tenant’s representative shall conduct a walk-through of the Premises and identify any necessary touch-up work, repairs and minor completion items that are necessary for final completion of the Work. Neither Landlord’s representative nor Tenant’s representative shall unreasonably withhold his or her agreement on punchlist items. Landlord shall use reasonable efforts to cause the contractor performing the Work to complete all punchlist items within 30 days after agreement thereon; however, Landlord shall not be obligated to engage overtime labor in order to complete such items.

8. Excess Costs. The entire cost of performing the Work (including design of and space planning for the Work and preparation of the Working Drawings and the final “as-built” plan of the Work, costs of construction labor and materials, electrical usage during construction, additional janitorial services, general tenant signage, related taxes and insurance costs, licenses, permits, certifications, surveys and other approvals required by law, and the construction supervision fee referenced in Section 10 of this Exhibit, all of which costs are herein collectively called the “Total Construction Costs”) in excess of the Construction Allowance (hereinafter defined) shall be paid by Tenant. Upon approval of the Working Drawings and selection of a contractor, Tenant shall promptly (a) execute a work order agreement prepared by Landlord which identifies such drawings and itemizes the Total Construction Costs and sets forth the Construction Allowance, and (b) pay to Landlord 50% of the amount by which Total Construction Costs exceed the Construction Allowance. Upon Substantial Completion of the Work and before Tenant occupies the Premises to conduct business therein, Tenant shall pay to Landlord an amount equal to the Total Construction Costs (as adjusted for any approved changes to the Work), less (1) the amount of the advance payment already made by Tenant, and (2) the amount of the Construction Allowance. In the event of default of payment of such excess costs, Landlord (in addition to all other remedies) shall have the same rights as for an Event of Default under this Lease.

- 26 -

9. Construction Allowance. Landlord shall provide to Tenant a construction allowance not to exceed $71,670.00 (the “Construction Allowance”) to be applied toward the Total Construction Costs, as adjusted for any changes to the Work. The Construction Allowance shall not be disbursed to Tenant in cash, but shall be applied by Landlord to the payment of the Total Construction Costs, if, as, and when the cost of the Work is actually incurred and paid by Landlord. The Construction Allowance must be used (that is, the Work must be fully complete and the Construction Allowance disbursed) within nine months following the Commencement Date or shall be deemed forfeited with no further obligation by Landlord with respect thereto, time being of the essence with respect thereto.

10. Construction Management. Landlord or its affiliate or agent shall supervise the Work, make disbursements required to be made to the contractor, and act as a liaison between the contractor and Tenant and coordinate the relationship between the Work, the Building and the Building’s systems. In consideration for Landlord’s construction supervision services, Tenant shall pay to Landlord a construction supervision fee equal to five percent of the Total Construction Costs.

11. Landlord’s Work. Landlord, at its sole cost and expense, will perform the following work in the Premises (such work will not be funded by the Construction Allowance):

(a) Deliver the HVAC, mechanical, electrical, and plumbing systems serving the Premises in good working order;

(b) Perform the repairs for RTU 1, RTU 2, RTU 3, RTU 4, RTU 5, and RTU 6 described on the HVAC report attached as Schedule 1 to this Exhibit (the “Suite 1225 Report”);

(c) Replace Split System 1 and Split System 2 described on the Suite 1225 Report with units sufficient to air condition the warehouse portion of the Premises, using Building-standard materials; provided, any electrical costs incurred by Landlord in connection with the removal of the existing units and installation of the new units will be included as part of the Work and deducted from the Construction Allowance; and

(d) Perform the repairs for RTU 1, RTU 2, RTU 3, RTU 4, RTU 5, RTU 6, RTU 7, RTU 8, and RTU 9 described on the HVAC report attached as Schedule 2 to this Exhibit.

- 27 -

Schedule I

August 25, 2014

Ms. Alesia Wiginton

Holt Lunsford Commercial

5055 Keller Springs Rd. Suite 300

Addison, TX 75001

Dear Alesia,

What follows is a summary of our HVAC inspection at 1225 Commerce Drive, Richardson, There are six (6) rooftop HVAC systems serving the space. Our inspection includes a comprehensive heating and cooling running inspection; we test / check controls, compressors, motors, coils, gas heat exchangers and/or electric heat to accurately identify equipment condition

- 28 -

1225 Commerce Drive, Richardson

- 29 -

1225 Commerce Drive, Richardson

Additionally, there are two (2) 50 ton split systems that are not currently in use. We performed an inspection in August of 2007 and the results at that time were as follows:

Alesia, all prices are plus tax. Thank-you for being a Mechanical Solutions customer.

- 30 -

Schedule 2

February 20, 2014

Ms. Alesla. Wiginton

Holt Lunsford Commercial

5055 Keller Springs Rd. Suite 300

Addison, TX 75001

Dear Alesia,

What follows is a summary of our HVAC inspection at 1249.Commerce Dr, Richardson. There are nine (9) rooftop HVAC systems serving the space. Our Inspection includes a comprehensive heating and cooling running inspection; we test / check controls, compressors, motors, coils, gas heat exchangers and/or electric heat to accurately identify equipment condition

- 31 -

1249 Commerce Dr. Richardson

- 32 -

1249 Commerce Dr. Richardson

Alesia, all prices are plus tax. Thank-you for being a Mechanical Solutions Customer.

- 33 -

EXHIBIT E

RIGHT OF FIRST OFFER

ATTACHED TO AND A PART OF THE LEASE AGREEMENT

DATED DECEMBER 4, 2014, BETWEEN

TCIT DALLAS INDUSTRIAL, INC.

and

INOGEN, INC.

RIGHT OF FIRST OFFER

Subject to then-existing renewal or expansion options of other tenants, and provided no Event of Default then exists, Landlord shall, prior to offering the same to any party (other than the then-current tenant therein), first offer to lease to Tenant the space designated on Schedule 1 to this Exhibit (the “Offer Space”) in an “AS-IS” condition; such offer shall be in writing and specify the lease terms for the Offer Space, including the rent to be paid for the Offer Space and the date on which the Offer Space shall be included in the Premises (the “Offer Notice”). Tenant shall notify Landlord in writing whether Tenant elects to lease the entire Offer Space on the terms set forth in the Offer Notice, within ten days after Landlord delivers to Tenant the Offer Notice. If Tenant timely elects to lease the Offer Space, then Landlord and Tenant shall execute an amendment to this Lease, effective as of the date the Offer Space is to be included in the Premises, on the terms set forth in the Offer Notice and, to the extent not inconsistent with the Offer Notice terms, the terms of this Lease; however, Tenant shall accept the Offer Space in an “AS-IS” condition and Landlord shall not provide to Tenant any allowances (e.g., moving allowance, construction allowance, and the like) or other tenant inducements except as specifically provided in the Offer Notice. Notwithstanding the foregoing, if prior to Landlord’s delivery to Tenant of the Offer Notice, Landlord has received an offer to lease all or part of the Offer Space from a third party (a “Third Party Offer”) and such Third Party Offer includes space in excess of the Offer Space, Tenant must exercise its rights hereunder, if at all, as to all of the space contained in the Third Party Offer.

If Tenant fails or is unable to timely exercise its right hereunder, then such right shall lapse, time being of the essence with respect to exercise thereof (it being understood that Tenant’s right hereunder is a one-time right only), and Landlord may lease all or a portion of the Offer Space to third parties on such terms as Landlord may elect. Tenant may not exercise its rights under this Exhibit if an Event of Default exists or Tenant is not then occupying the entire Premises. For purposes hereof, if an Offer Notice is delivered for less than all of the Offer Space but such notice provides for an expansion, right of first refusal, or other preferential right to lease some of the remaining portion of the Offer Space, then such remaining portion of the Offer Space shall thereafter be excluded from the provisions of this Exhibit.

Tenant’s rights under this Exhibit shall terminate if (a) this Lease or Tenant’s right to possession of the Premises is terminated, (b) Tenant assigns any of its interest in this Lease or sublets any portion of the Premises, or (c) less than two (2) full calendar years remain in the initial Lease Term of this Lease.

- 34 -

Schedule I

- 35 -

EXHIBIT F

RENEWAL OPTION

ATTACHED TO AND A PART OF THE LEASE AGREEMENT

DATED DECEMBER 4, 2014, BETWEEN

TCIT DALLAS INDUSTRIAL, INC.

and

INOGEN, INC.

RENEWAL OPTION

Provided no Event of Default exists and Tenant is occupying the entire Premises at the time of such election, Tenant may renew this Lease for one additional period of five (5) years, by delivering written notice of the exercise thereof to Landlord not earlier than nine (9) months nor later than six (6) months before the expiration of the Lease Term. The Base Rent payable for each month during such extended Lease Term shall be the prevailing rental rate (the “Prevailing Rental Rate”), at the commencement of such extended Lease Term, for renewals of space in the Building of equivalent quality, size, utility and location, with the length of the extended Lease Term and the credit standing of Tenant to be taken into account, Within 30 days after receipt of Tenant’s notice to renew, Landlord shall deliver to Tenant written notice of the Prevailing Rental Rate and shall advise Tenant of the required adjustment to Base Rent, if any, and the other terms and conditions offered. Tenant shall, within ten days after receipt of Landlord’s notice, notify Landlord in writingn whether Tenant accepts or rejects Landlord’s determination of the Prevailing Rental Rate. If Tenant timely notifies Landlord that Tenant accepts Landlord’s determination of the Prevailing Rental Rate, then, on or before the commencement date of the extended Lease Term, Landlord and Tenant shall execute an amendment to this Lease extending the Lease Term on the same terms provided in this Lease, except as follows:

(a)Base Rent shall be adjusted to the Prevailing Rental Rate:

(b)Tenant shall have no further renewal option unless expressly granted by Landlord in writing; and

(c)Landlord shall lease to Tenant the Premises in their then-current condition, and Landlord shall not provide to Tenant any allowances (e.g., moving allowance, construction allowance, and the like) or other tenant inducements.

If Tenant rejects Landlord’s determination of the Prevailing Rental Rate, or fails to timely notify Landlord in writing that Tenant accepts or rejects Landlord’s determination of the Prevailing Rental Rate, time being of the essence with respect thereto, Tenant’s rights under this Exhibit shall terminate and Tenant shall have no right to renew this Lease.

Tenant’s rights under this Exhibit shall terminate if (1) this letter or Tenant’s right to possession of the Premises is terminated, (2) Tenant assigns any of its interest in this Lease or sublets any portion of the Premises, or (3) Tenant fails to timely exercise its option under this Exhibit, time being of the essence with respect to Tenant’s exercise thereof.

- 36 -