3.7 Entire Agreement; Amendments and Waivers. This Agreement (including the Exhibits hereto, if any) constitutes the full and entire understanding and agreement among the parties with regard to the subjects hereof and thereof. Any term of this Agreement may be amended and the observance of any term of this Agreement may be waived (either generally or in a particular instance and either retroactively or prospectively), only with the written consent of the Company and the holders of more than two-thirds of the Registrable Securities then outstanding; provided, however, that (a) in the event that such amendment or waiver adversely affects the obligations and/or rights of the Common Holders in a different manner than the other Holders, such amendment or waiver shall also require the written consent of the holders of a majority of the Common Stock of the Company held by the Common Holders, (b) in the event that such amendment or waiver adversely affects the obligations and/or rights of an Investor in a manner materially different than the other Investors, such amendment or waiver shall not be binding on such differently affected Investor without its written consent; and (c) the provisions of Section 2.5 may not be amended or waived so as to deprive Prospect Venture Partners, Venrock Associates, New Enterprise Associates, or Atlas Venture Fund VI, L.P. of any rights to designate directors thereunder without the consent of such affected party. Any amendment or waiver effected in accordance with this paragraph (including any waiver of the Right of First Offer by the requisite percentage set forth in this Section 3.7) shall be binding upon each holder of any Registrable Securities, each future holder of all such Registrable Securities, each Common Holder, and the Company.
3.8 Severability. If one or more provisions of this Agreement are held to be unenforceable under applicable law, such provision shall be excluded from this Agreement and the balance of the Agreement shall be interpreted as if such provision were so excluded and shall be enforceable in accordance with its terms.
3.9 Aggregation of Stock. All shares of Registrable Securities held or acquired by affiliated entities or persons shall be aggregated together for the purpose of determining the availability of any rights under this Agreement.
3.10 Additional Investors. Notwithstanding Section 3.7, no consent shall be necessary to add additional Investors as signatories to this Agreement, provided that such Investors have purchased Series D Preferred Stock pursuant to the Series D Agreement.
3.11 Termination of Prior Agreement. Upon the effectiveness of this Agreement, the Prior Agreement shall be amended and restated and be of no further force and effect, and shall be superseded and replaced in its entirety by this Agreement.
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