in connection with any unsolicited offer to acquire us. However, these provisions may have an anti-takeover effect and may delay, deter or prevent a merger or acquisition of the Company by means of a tender offer, a proxy contest or other takeover attempt that a shareholder might consider in its best interest, including those attempts that might result in a premium over the prevailing market price for the shares of common stock held by shareholders.
These provisions include:
Classified board. Our certificate of incorporation provides that our Board is divided into three classes of directors, with the classes as nearly equal in number as possible, and with the directors serving three-year terms. As a result, approximately one-third of our Board will be elected each year. The classification of directors has the effect of making it more difficult for shareholders to change the composition of our Board. Our certificate of incorporation also provides that, subject to any rights of holders of preferred stock to elect additional directors under specified circumstances, the number of directors will be fixed exclusively pursuant to a resolution adopted by our Board.
Shareholder action by written consent. Our certificate of incorporation precludes shareholder action by written consent at any time when Apax Partners (“Apax”) and Welsh, Carson, Anderson and Stowe (“WCAS” and, together with Apax, the “Principal Shareholders”) beneficially own, in the aggregate, less than 35% in voting power of our outstanding common stock.
Special meetings of shareholders. Our certificate of incorporation and bylaws provide that, except as required by law, special meetings of our shareholders may be called at any time only by or at the direction of our Board or the chair of our Board; provided, however, at any time when the Principal Shareholders beneficially own, in the aggregate, at least 35% in voting power of our outstanding common stock, special meetings of our shareholders shall also be called by our Board or the chair of our Board at the request of the Principal Shareholders. Our bylaws prohibit the conduct of any business at a special meeting other than as specified in the notice for such meeting. These provisions may have the effect of deferring, delaying or discouraging hostile takeovers, or changes in control or management of the Company.
Advance notice procedures. Our bylaws establish advance-notice procedures with respect to shareholder proposals and the nomination of candidates for election as directors, other than nominations made by or at the direction of our Board or a committee of our board of directors, provided, however, that at any time when the Principal Shareholders beneficially own, in the aggregate, at least 5% in voting power of our outstanding common stock, such advance notice procedure will not apply to the Principal Shareholders. Shareholders at an annual meeting will only be able to consider proposals or nominations specified in the notice of meeting or brought before the meeting by or at the direction of our Board or by a shareholder who was a shareholder of record on the record date for the meeting, who is entitled to vote at the meeting and who has given our Secretary timely written notice, in proper form, of the shareholder’s intention to bring that business before the meeting. Although the bylaws do not give our Board the power to approve or disapprove shareholder nominations of candidates or proposals regarding other business to be conducted at a special or annual meeting, the bylaws may have the effect of precluding the conduct of certain business at a meeting if the proper procedures are not followed or may discourage or deter a potential acquirer from conducting a solicitation of proxies to elect its own slate of directors or otherwise attempting to obtain control of the Company. These provisions do not apply to nominations by the Principal Shareholders pursuant to the Director Nomination Agreement dated March 8, 2021 (the “Director Nomination Agreement”).
Removal of directors; vacancies. Our certificate of incorporation provides that a director nominated by the Principal Shareholders may be removed with or without cause by the Principal Shareholders; provided, however, that at any time when the Principal Shareholders beneficially own, in the aggregate, less than 40% of our outstanding common stock, all directors, including those nominated by the Principal Shareholders, may only be removed for cause, and only by the affirmative vote of holders of at least 662⁄3% in voting power of all the then-outstanding shares of stock of the Company entitled to vote thereon, voting together as a single class. In addition, our certificate of incorporation also provides that, subject to the rights granted to one or more