General Prohibition. Without Landlord’s prior written consent subject to and on the conditions described in this Section 22, Tenant shall not, directly or indirectly, voluntarily or by operation of law, 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. If Tenant is a corporation, partnership or limited liability company, the shares or other ownership interests thereof which are not actively traded upon a stock exchange or in the over-the-counter market, a transfer or series of transfers whereby 49% or more of the issued and outstanding shares or other ownership interests of such corporation are, or voting control is, transferred (but excepting transfers upon deaths of individual owners) from a person or persons or entity or entities which were owners thereof at time of execution of this Lease to persons or entities who were not owners of shares or other ownership interests of the corporation, partnership or limited liability company at time of execution of this Lease, shall be deemed an assignment of this Lease requiring the consent of Landlord as provided in this Section 22. Notwithstanding the foregoing, Tenant shall have the right to obtain financing from investors (including venture capital funding and corporate partners) or undergo a public offering which results in a change in control of Tenant without such change of control constituting an assignment under this Section 22 requiring Landlord consent, provided that # Tenant notifies Landlord in writing of the financing at least 5 business days prior to the closing of the financing, and # provided that in no event shall such financing result in a change in use of the Premises from the use contemplated by Tenant at the commencement of the Term.

No Prohibition. No consent of any party to any contract, agreement, instrument, lease, license, or arrangement to which the Company is a party, or to which any of its properties or assets are subject, is required for the execution, delivery, or performance of this Agreement or the Trust Indenture. The Company’s execution, delivery, or performance of this Agreement and the Trust Indenture and sale of the Notes in the Offering # will not violate, result in a breach of, or conflict with, or (with or without the giving of notice or the passage of time or both) entitle any party to terminate or call a default under, any agreement to which the Company is a party or to which the Company or any of its assets are subject; # will not violate, result in a breach of, or conflict with any term of the certificate of formation or operating agreement; # will not result in the creation or imposition of any lien, charge, or encumbrance upon any property or assets of the Company; and # will not violate, result in a breach of, or conflict with any law, rule, regulation, order, judgment, or decree binding on the Company or any of its assets;

Prohibition on Repricing. Subject to Section 12.2 hereof, the Administrator shall not, without the approval of the stockholders of the Company, # authorize the amendment of any outstanding Option or Stock Appreciation Right to reduce its price per share, or # cancel any Option or Stock Appreciation Right in exchange for cash or another Award when the Option or Stock Appreciation Right price per share exceeds the Fair Market Value of the underlying Shares. Subject to Section 12.2 hereof, the Administrator shall have the authority, without the approval of the stockholders of the Company, to amend any outstanding award to increase the price per share or to cancel and replace an Award with the grant of an Award having a price per share that is greater than or equal to the price per share of the original Award.

Prohibition Against Recording. Except as provided in Section 29.4 of this Lease, neither this Lease, nor any memorandum, affidavit or other writing with respect thereto, shall be recorded by Tenant or by anyone acting through, under or on behalf of Tenant.

Prohibition/Compliance/Indemnity. Tenant shall not cause or permit any Hazardous Materials (as hereinafter defined) to be brought upon, kept, used, stored, handled, treated, generated in or about, or released or disposed of from, the Premises or the Project in violation of applicable Environmental Requirements (as hereinafter defined) by Tenant or any Tenant Party. If Tenant breaches the obligation stated in the preceding sentence, or if the presence of Hazardous Materials in the Premises during the Term or any holding over results in contamination of the Premises, the Project or any adjacent property or if contamination of the Premises, the Project or any adjacent property by Hazardous Materials brought into, kept, used, stored, handled, treated, generated in or about, or released or disposed of from, the Premises by anyone other than Landlord and Landlord’s employees, agents and contractors otherwise occurs during the Term or any holding over, Tenant hereby indemnifies and shall defend and hold Landlord, its officers, directors, employees, agents and contractors harmless from any and all actions (including, without limitation, remedial or enforcement actions of any kind, administrative or judicial proceedings, and orders or judgments arising out of or resulting therefrom), costs, claims, damages (including, without limitation, punitive damages and damages based upon diminution in value of the Premises or the Project, or the loss of, or restriction on, use of the Premises or any portion of the Project), expenses (including, without limitation, attorneys’, consultants’ and experts’ fees, court costs and amounts paid in settlement of any claims or actions), fines, forfeitures or other civil, administrative or criminal penalties, injunctive or other relief (whether or not based upon personal injury, property damage, or contamination of, or adverse effects upon, the environment, water tables or natural resources), liabilities or losses (collectively, “Environmental Claims”) which arise during or after the Term as a result of such contamination. This indemnification of Landlord by Tenant includes, without limitation, costs incurred in connection with any investigation of site conditions or any cleanup, treatment, remedial, removal, or restoration work required by any federal, state or local Governmental Authority because of Hazardous Materials present in the air, soil or ground water above, on, or under the Premises. Without limiting the foregoing, if the presence of any Hazardous Materials on the Premises, the Building, the Project or any adjacent property caused or permitted by Tenant or any Tenant Party results in any contamination of the Premises, the Building, the Project or any adjacent property, Tenant shall promptly take all actions at its sole expense and in accordance with applicable Environmental Requirements as are necessary to return the Premises, the Building, the Project or any adjacent property to the condition existing prior to the time of such contamination, provided that Landlord’s approval of such action shall first be obtained, which approval shall not unreasonably be withheld so long as such actions would not potentially have any material adverse long-term or short-term effect on the Premises, the Building or the Project. Notwithstanding anything to the contrary contained in Section 28 or this Section 30, Tenant shall not be responsible for or have any liability to Landlord, and the indemnification and hold harmless obligation set forth in this paragraph shall not apply to Hazardous Materials in or about the Building, the

Prohibition on Repricings. Except in connection with a corporate transaction involving the Company (including, without limitation, any stock dividend, stock split, extraordinary cash dividend, recapitalization, reorganization, merger, consolidation, split-up, spin-off, combination, or exchange of shares), the terms of outstanding Awards may not be amended to reduce the exercise price of outstanding Options or SARs or cancel outstanding Options or SARs in exchange for cash, other Awards or Options or SARs with an exercise price that is less than the exercise price of the original Options or SARs without stockholder approval.

No right or interest under the Plan of any Participant or Beneficiary shall be subject at any time or in any manner to anticipation, alienation, assignment (either at law or in equity), encumbrance (as security or otherwise), garnishment, levy, execution, or other legal or equitable process, and no Participant or Beneficiary shall have the power at any time or in any manner to anticipate, transfer, assign (either at law or in equity), alienate, or subject to attachment, garnishment, levy, execution or other legal or equitable process, or in any way encumber, such Participant's or Beneficiary's rights or interests under the Plan, and any attempt to do so shall be void; provided, however, that the Company shall have the unrestricted right to set off against or recover out of any payments due a Participant or Beneficiary at the time such payments would have otherwise been payable hereunder, any amounts owed the Company or any Affiliated Company by such Participant or Beneficiary.

General. This Amendment is governed by and construed in accordance with the laws of the State of Illinois and forms part of and is subject to the terms and conditions of the Plan; however, the terms of this Amendment shall prevail to the extent of any conflict or inconsistency between the terms of this Amendment and the Plan, and all references in the Plan to “the Plan,” “herein,” “hereof” or similar terms shall be deemed to refer to the Plan as amended by this Amendment. Except as specifically amended pursuant to the foregoing, the Plan shall continue in full force and effect in accordance with the terms in existence as of the date of this Amendment. This Amendment, together with the Plan and the agreements referred to therein and herein, contains the entire agreement of the parties with respect to the matters herein, and may not be amended or modified except by an instrument executed in writing by all parties hereto. The parties may execute this Amendment in one or more counterparts, each of which shall for all purposes be deemed to be an original but both of which together shall constitute one and the same Amendment.

General. The Committee shall administer the Plan in accordance with its terms, provided that the Board may act in lieu of the Committee on any matter. The Committee shall hold meetings at such times and places as it may determine and shall make such rules and regulations for the conduct of its business as it deems advisable. In the absence of a duly appointed Committee or if the Board otherwise chooses to act in lieu of the Committee, the Board shall function as the Committee for all purposes of the Plan.

General. As a condition to the issuance or distribution of Shares pursuant to the Plan, the Participant (or in the case of the Participant’s death, the person who succeeds to the Participant’s rights) shall make such arrangements as the Company may require for the satisfaction of any applicable federal, state, local or foreign withholding tax obligations that may arise in connection with the Award and the issuance of Shares. The Company shall not be required to issue any Shares until such obligations are satisfied. If the Committee allows the withholding or surrender of Shares to satisfy a Participant’s tax withholding obligations, the Committee shall not allow Shares to be withheld in an amount that exceeds the minimum statutory withholding rates for federal and state tax purposes, including payroll taxes.