LOCK-UP LETTER AGREEMENT

Definitions. As used in this Agreement, the following capitalized terms have the following respective meanings:

“Immediate Family” shall mean any relationship by blood, marriage or adoption, not more remote than first cousin.

“Lock-Up Shares” shall mean the Closing Stock Consideration issued to the undersigned at the Closing and any shares of capital stock of Parent issued (or issuable upon the conversion or exercise of any warrant, right or other security which is issued) by Parent as a dividend or other distribution with respect to, or in exchange for or in replacement of, such Closing Stock Consideration.

“Restricted Period” shall mean the period of time from and after the Closing Date until the one (1) year anniversary of the Closing Date.

“Transfer” shall mean (i) any direct or indirect sale, assignment, disposition or other transfer, either voluntary or involuntary, of any capital stock or interest in any capital stock or (ii) in respect of any capital stock or interest in any capital stock, to enter into any swap or other agreement, transaction or series of transactions, in each case that has an exercise or conversion privilege or a settlement or payment mechanism determined with reference to, or derived from the value of, the capital stock of Parent and that hedges or transfers, in whole or in part, directly or indirectly, the economic consequences of such capital stock or interest in such capital stock, whether any such transaction, swap or series

Restriction. During the Restricted Period, the undersigned will not, without the prior written consent of Parent, Transfer any of the Lock-Up Shares.

Full Shareholder Rights. Nothing in this Agreement limits the rights of the undersigned as a shareholder of Parent, including, but not limited to, the right to vote and receive dividends on the Lock-Up Shares.

Exceptions. Notwithstanding Section 2, the undersigned may Transfer the Lock-Up Shares during the Restricted Period with the prior written consent of Parent or may Transfer the Lock-Up Shares without Parent’s consent: (i) as a bona fide gift or gifts, (ii) to any trust or family limited partnership or similar entity for the direct or indirect benefit of the undersigned and/or the Immediate Family of the undersigned and/or bona fide charities, or (iii) (a) if the undersigned is a corporation, the corporation may Transfer the Lock-Up Shares to any wholly owned subsidiary or stockholder of the undersigned; (b) if the undersigned is a partnership or limited partnership, the partnership or limited partnership may Transfer the Lock-Up Shares to its partners or limited partners, as the case may be; and (c) if the undersigned is a limited liability company, the limited liability company may Transfer the Lock-Up Shares to its members; provided, however, that in the case of any such Transfer, it shall be a condition to the Transfer that (A) the donee, trustee, general partner of the family limited partnership, shareholder, partner, limited partner, member or other transferee agree to be bound in writing by the restrictions set forth herein; (B) such transferee shall execute an agreement stating that the transferee is receiving and holding the Lock-Up Shares subject to the provisions of this Agreement; and (C) there shall be no further Transfer of such Lock-Up Shares by such transferee except in accordance with this Agreement.

Transfers in Violation. Any Transfer or attempted Transfer of Lock-Up Shares in violation of this Agreement shall, to the fullest extent permitted by law, be null and void ab initio, and Parent shall not, and shall instruct its transfer agent and other third parties not to, record or recognize any such purported transaction on the share register of Parent.

Implementation of Restrictions. The undersigned agrees and consents to the entry of stop transfer instructions with Parent’s transfer agent and registrar against the Transfer of the Lock-Up Shares, except in compliance with this Agreement. In furtherance of the foregoing, Parent and its transfer agent are hereby authorized to decline to make any Transfer of securities if such Transfer would constitute a violation or breach of this Agreement. Additionally, Parent’s transfer agent is hereby authorized to note the restrictions against Transfer of the Lock-Up Shares of this Agreement in its book entry records and, if any of the Lock-Up Shares are issued in certificated form, Parent’s transfer agent is authorized to place a legend upon such certificate stating the restrictions of this Agreement.

Incorporation of Purchase Agreement Provisions. The provisions of Section 10.5 (Notices), Section 10.7 (Governing Law), Section 10.9 (Interpretation), Section 10.12 (Severability), Section 10.13 (Counterparts; Facsimile Signatures), Section 10.15 (Waiver of Jury Trial), Section 10.16 (Jurisdiction and Venue) and Section 10.17 (Specific Performance) of the Purchase Agreement shall apply to this Agreement as if fully set forth herein, mutatis mutandis.

Authority; Assigns. The undersigned represents and warrants that the undersigned has full power and authority to enter into this Agreement and sole power and authority to agree to all of the matters set forth in this Agreement, with no limitations, qualification or restrictions on such rights, subject to applicable federal securities laws and the terms of this Agreement. This Agreement shall be binding upon and shall inure to the benefit of the parties hereto and their respective heirs, successors, executors, legal representatives, and permitted assigns. The undersigned may not assign any of its rights or obligations hereunder without the prior written consent of Parent.

Amendment and Modification; Waiver. This Agreement may only be amended, modified or supplemented by an agreement in writing signed by the parties hereto. No waiver by any party of any of the provisions hereof shall be effective unless explicitly set forth in writing and signed by the party so waiving. Except as otherwise set forth in this Agreement, no failure to exercise, or delay in exercising, any rights, remedy, power or privilege arising from this Agreement shall operate or be construed as a waiver thereof; nor shall any single or partial exercise of any right, remedy, power or privilege hereunder preclude any other or further exercise thereof or the exercise of any other right, remedy, power or privilege.

Entire Agreement. This Agreement constitutes the sole and entire agreement of the parties to this Agreement with respect to the subject matter contained herein, and supersedes all prior and contemporaneous understandings, agreements, representations and warranties, both written and oral, with respect to such subject matter.

Effectiveness of this Agreement. Notwithstanding the earlier execution and delivery of this Agreement, the effectiveness of this Agreement is conditioned on the Closing of the transactions contemplated by the Purchase Agreement. If the Closing shall occur, this Agreement shall become effective concurrently with the Closing on the Closing Date. If the Purchase Agreement is terminated for any reason in accordance therewith, this Agreement shall be null and void ab initio.