stockholders. Any director may be removed during his or her term of office, either with or without cause, by, and only by, the affirmative vote of the holders of the shares of the class or series of stock entitled to elect such director or directors, given either at a special meeting of such stockholders duly called for that purpose or pursuant to a written consent of stockholders, and any vacancy thereby created may be filled by the holders of that class or series of stock represented at the meeting or pursuant to written consent.
6. Protective Provisions. So long as any shares of Preferred Stock are outstanding, the Corporation shall not (by amendment, merger, consolidation or otherwise) without first obtaining the approval (by vote or written consent, as provided by law) of the holders of at least a majority of the then outstanding shares of Preferred Stock, voting together as a single class on an as-converted basis:
(a) amend, alter, waive or repeal of any provision of the Restated Certificate or Bylaws of the Corporation (or equivalent organizational documents);
(b) increase the total number of authorized shares of Common Stock or Preferred Stock, provided, however, the Corporation shall not (by amendment, merger, consolidation or otherwise) (i) increase the total number of authorized shares of Series B Preferred Stock without the approval (by vote or written consent, as provided by law) of the holders of at least a majority of the then outstanding Series B Preferred Stock, voting as a separate class, or (ii) increase the total number of authorized shares of Series C Preferred Stock without the approval (by vote or written consent, as provided by law) of the holders of at least a majority of the then outstanding Series C Preferred Stock, voting as a separate class;
(c) authorize or issue (whether by reclassification or otherwise) any equity security (including any other security convertible into or exercisable for any such equity security) having a preference over, or being on a parity with, any series of Preferred Stock with respect to dividends, liquidation, voting or redemption, other than the issuance of any authorized but unissued shares of Series C Preferred Stock designated in this Restated Certificate (including any security convertible into or exercisable for such shares of Preferred Stock);
(d) redeem, purchase or otherwise acquire (or permit any subsidiary to redeem, purchase or otherwise acquire), or pay into or set aside for a sinking fund for such purpose, any share or shares of Preferred Stock or Common Stock; provided, however, that this restriction shall not apply to (i) the repurchase of shares of Common Stock from employees, officers, directors, consultants or other persons performing services for the Corporation or any subsidiary pursuant to agreements under which the Corporation has the option to repurchase such shares upon the occurrence of certain events, such as the termination of employment or service, or (ii) pursuant to a right of first refusal;
(e) increase or decrease the authorized number of members of the Board of Directors (or equivalent governing body);
(f) increase or decrease the number of shares of Common Stock reserved for issuance pursuant to any stock option plans or restricted stock plans;
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