Maximum. A Participant may contribute, by payroll deduction, any whole percentage of the Participant’s Compensation not exceeding 75% of Compensation for each pay period to the Participant’s Pretax Deferral Account and/or Roth Deferral Account. The Participant must specify whether the deferral contributions shall be pretax deferral contributions, Roth deferral contributions, or a combination of both. If a Participant fails to specify, then his or her deferral contributions shall be treated as pretax deferral contributions. The election shall be made in such manner and with such advance notice as prescribed by the Committee.

Tender of Payment. Upon giving notice of any exercise hereunder, the Optionee shall provide for payment of the Exercise Price of the Shares being purchased through one or a combination of the following methods:

Agreement to Tender. Subject to the terms of this Agreement, each Stockholder hereby agrees to validly and irrevocably tender or cause to be validly and irrevocably tendered in the Offer all of such Stockholder’s Subject Shares (other than Company Stock Options that are not exercised and Company PSUs that are not settled during the Agreement Period (as defined below)) pursuant to and in accordance with the terms of the Offer, free and clear of all Liens except for Permitted Liens (as defined below). Without limiting the generality of the foregoing, as promptly as practicable after, but in no event later than ten (10) Business Days after, the commencement (within the meaning of Rule 14d-2 under the Exchange Act) of the Offer (or in the case of any shares of Company Common Stock acquired by such Stockholder subsequent to such tenth (10th) Business Day, or in each case if such Stockholder has not received the Offer Documents by such time, as promptly as practicable after the acquisition of such shares or receipt of the Offer Documents, as the case may be (but, if such shares are acquired or such Offer Documents are received prior to the expiration of the Offer, in no event later than expiration of the Offer)), each Stockholder shall deliver or cause to be delivered pursuant to the terms of the Offer # in the case of Subject Shares represented by a Certificate, a letter of transmittal with respect to all of such Stockholder’s Subject Shares complying with the terms of the Offer, together with the Certificate(s) representing all such Subject Shares that are certificated, # in the case of Book- Entry Shares, written instructions to such Stockholder’s broker, dealer or other nominee that such Subject Shares be tendered, including a reference to this Agreement, and requesting delivery of an “agent’s message” (or such other evidence, if any, of transfer as the Paying Agent may reasonably request) with respect to such Subject Shares, and # all other documents or instruments required by the terms of the Offer in order to effect the valid tender of such Stockholder’s Subject Shares in accordance with the terms of the Offer. Each Stockholder agrees that, once any of such Stockholder’s Subject Shares are tendered, such Stockholder will not withdraw and will cause not to be withdrawn such Subject Shares from the Offer at any time, unless and until this Agreement shall have been validly terminated in accordance with Section 5.2.

As set forth in [Exhibit C], CLIENT warrants that, to its knowledge, it has provided all necessary documentation and proper handling instructions for all Products to be stored and handled by OHL, and that such information is accurate, complete and sufficient to allow OHL to comply with all laws, regulations and ordinances concerning the storage, handling, shipping and transporting of such Products. In the event CLIENT becomes aware of any new, additional or incomplete information not [ * ] = CERTAIN CONFIDENTIAL INFORMATION CONTAINED IN THIS DOCUMENT, MARKED BY BRACKETS, IS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO RULE 406 UNDER THE SECURITIES ACT OF 1933, AS AMENDED

Tender Back Provision. If, in the context of a lawsuit involving Grantee or any other person or entity arguing on Grantee’s behalf, any court determines that any provisions of [Section 2] are void, invalid, illegal, or otherwise unenforceable, Grantee shall be required to immediately return to the Company 70% of all monies paid out under Paragraph 2 of the Restricted Stock Award Agreement, or to return 70% of any unsold shares the Grantee still owns of such Restricted Stock awarded under Paragraph 2 of the Restricted Stock Award Agreement. For purposes of this section, the amount to be paid back shall be determined by ascertaining the value and amount the share(s) sold for at the time that the Grantee actually sold such share(s).

6 Representations of the Purchasers 16

Maximum Reduction. The maximum aggregate reduction with respect to any Licensed Product in any country during any Calendar Quarter pursuant to [Section 7.4.4] shall be capped at ​ of the amount of the royalty that would be payable in respect of Net Sales in such country under [Section 7.4.3], prior to any such reductions, and any unused portions of the reduction shall be carried-forward in future Calendar Quarters.

Maximum Rate. In no contingency or event whatsoever shall the aggregate of all amounts deemed interest under this Agreement charged or collected pursuant to the terms of this Agreement exceed the highest rate permissible under any Applicable Law which a court of competent jurisdiction shall, in a final determination, deem applicable hereto. In the event that such a court determines that ​ have charged or received interest hereunder in excess of the highest applicable rate, the rate in effect hereunder shall automatically be reduced to the maximum rate permitted by Applicable Law and ​ shall at the Administrative Agent’s option # promptly refund to the Borrower any interest received by ​ in excess of the maximum lawful rate or # apply such excess to the principal balance of the Obligations. It is the intent hereof that the Borrower not pay or contract to pay, and that neither the Administrative Agent nor any Lender receive or contract to receive, directly or indirectly in any manner whatsoever, interest in excess of that which may be paid by the Borrower under Applicable Law.

The Revolving A Facility Usage shall not exceed at any time the lesser of # the Maximum Revolving A Advance Amount, and # the Formula Amount. The amount of outstanding Revolving B Advances shall not exceed at any time the sum of # the Maximum Revolving B Advance Amount plus # any Revolving B PIK Interest accrued or paid-in-kind in accordance with this Agreement.

In no event whatsoever shall interest and other charges charged hereunder exceed the highest rate permissible under Applicable Law. In the event interest and other charges as computed hereunder would otherwise exceed the highest rate permitted under Applicable Law, such excess amount shall be first applied to any unpaid principal balance owed by ​, and if the then remaining excess amount is greater than the previously unpaid principal balance, Lenders shall promptly refund such excess amount to ​ and the provisions hereof shall be deemed amended to provide for such permissible rate.

Condition Precedent. Notwithstanding anything to the contrary contained in this First Amendment, Tenant and Landlord acknowledge and agree that the effectiveness of this First Amendment shall be subject to the following condition precedent (“Condition Precedent”) having been satisfied: Landlord and Omniox shall have entered into a lease amendment to the Omniox Lease on or before ​, pursuant to which Omniox agrees to surrender the Expansion Premises and lease an alternate premises in the Building from Landlord (“Substitute Premises”), which lease amendment shall be on terms and conditions acceptable to Landlord, in Landlord’s sole and absolute discretion. (For the avoidance of any doubt, the Substitute Premises referred to in the immediately preceding sentence is the same “Omniox Premises” referred to in [Section 2] of the Lease (as amended pursuant to [Section 9] above)). In the event that the Condition Precedent is not satisfied, Landlord shall have the right to terminate this First Amendment upon delivery of written notice to Tenant. Landlord shall have no liability whatsoever to Tenant relating to or arising from Landlord’s inability or failure to cause the Condition Precedent to be satisfied.

Environmental Condition. Except as set forth on [Schedule 4.13] and except with respect to any other matters that, individually or in the aggregate, could not reasonably be expected to have a Material Adverse Effect:

Performance Condition. Subject to the following sentence, the actual number of Shares subject to this Award that will vest will be determined based upon the achievement of Company Stock Price Target(s) during the Performance Period and the satisfaction of the applicable service-based vesting conditions, all in accordance with this [Exhibit A]. Except as set forth in [Section 4] of this [Exhibit A], in no case can more than 3,100,000 Shares become Eligible Shares (as defined below) in any calendar year during the Initial Period (such limit, the “Share Limit”). For the avoidance of doubt, following the end of the Initial Period, no Share Limit shall apply.

Environmental Condition. Except as set forth on [Schedule 4.11], # to Borrower's knowledge, no Loan Party's nor any of its Subsidiaries' properties or assets has ever been used by a Loan Party, its Subsidiaries, or by previous owners or operators in the disposal of, or to produce, store, handle, treat, release, or transport, any Hazardous Materials, where such disposal, production, storage, handling, treatment, release or transport was in violation, in any material respect, of any applicable Environmental Law, # to Borrower's knowledge, after due inquiry, no Loan Party's nor any of its Subsidiaries' properties or assets has ever been designated or identified in any manner pursuant to any environmental protection statute as a Hazardous Materials disposal site, # no Loan Party nor any of its Subsidiaries has received notice that a Lien arising under any Environmental Law has attached to any revenues or to any Real Property owned or operated by a Loan Party or its Subsidiaries, and # no Loan Party nor any of its Subsidiaries nor any of their respective facilities or operations is subject to any outstanding written order, consent decree, or settlement agreement with any Person relating to any Environmental Law or Environmental Liability that, individually or in the aggregate, could reasonably be expected to result in a Material Adverse Effect.

PUCT Condition. Notwithstanding anything to the contrary in [Section 13], no amendment or modification of this Agreement shall be effective unless the process set forth in this [Section 14] has been followed.

Financial Condition. ​ has not applied for or consented to the appointment of a receiver, trustee or liquidator of itself or any of its property, admitted in writing its inability to pay its debts as they mature, made a general assignment for the benefit of creditors, been adjudicated a bankrupt or insolvent or filed a voluntary petition in bankruptcy, or a petition or an answer seeking reorganization or an arrangement with creditors or to take advantage of any bankruptcy, reorganization, insolvency, readjustment of debt, dissolution or liquidation law or statute, or an answer admitting the material allegations of a petition filed against it in any proceeding under any such law, and no action has been taken by ​ for the purpose of effecting any of the foregoing. No order, judgment or decree has been entered by any court of competent jurisdiction approving a petition seeking reorganization of ​ or all or a substantial part of the assets of ​, or appointing a receiver, sequestrator, trustee or liquidator of it or any of its property.

Burdensome Condition. No Required Regulatory Approval, Mitchell Plant Approval, Additional Regulatory Filing and Consent, amendment of the NSR Consent Decree contemplated by [Section 4.13] shall, individually or in the aggregate, impose, be conditioned upon or contain terms, conditions, liabilities, obligations, commitments or sanctions resulting in, or otherwise create or have created, any Burdensome Condition.

Condition Precedent. As a condition precedent to the obligations of the ​ to purchase the Company Shares, the ​ shall have conducted a due diligence review of the Company and its books and records to its full satisfaction and shall have delivered written confirmation of the same as set forth in [Section 2.3] hereof.

Rating Condition. The Administrative Agent shall have received evidence satisfactory to it that the Rating Condition has been satisfied.

Financial Condition. The Borrower represents that, at the present time, it is not a party to any material pending or threatened litigation, nor a party to any proceeding or action for the assessment or collection of a material amount of additional taxes, and that it does not know of any material contingent liabilities not provided for or disclosed in the financial statements heretofore provided Lender. The Borrower also represents to Lender that the latest financial statements furnished heretofore to Lender fairly represent its financial condition for the period as of the date stated, all in accordance with generally accepted accounting principles consistently applied; and that no substantial adverse changes have occurred since the date of the last financial statement furnished to Lender.