Notwithstanding any other provision of this Article IV, each Purchaser covenants that the Shares may be disposed of only pursuant to an effective registration statement under, and in compliance with the requirements of, the Securities Act, or pursuant to an available exemption from, or in a transaction not subject to, the registration requirements of the Securities Act, and in compliance with any applicable state, federal or foreign securities laws. In connection with any transfer of the Shares other than (i) pursuant to an effective registration statement, (ii) to the Company or (iii) pursuant to Rule 144 (provided that the transferor provides the Company with reasonable assurances (in the form of a seller representation letter and, if applicable, a broker representation letter) that such securities may be sold pursuant to such rule), the Company may require the transferor thereof to provide to the Company and the Transfer Agent, at the transferor’s expense, an opinion of counsel selected by the transferor and reasonably acceptable to the Company and the Transfer Agent, the form and substance of which opinion shall be reasonably satisfactory to the Company and the Transfer Agent, to the effect that such transfer does not require registration of such Shares under the Securities Act.