9.	Common stock

Authorized, issued and outstanding shares

As of December 31, 2014, 2013 and 2012, as stated in the Company’s Fourth Amended and Restated Certificate of Incorporation (the “Fourth Amended Certificate of Incorporation”), the Company has authorized 110,000,000 shares of Common Stock, par value $0.001 per share (“Common Stock”).

As of December 31, 2014 and 2013, there were 44,154,572 and 44,153,473 shares of common stock issued and outstanding with a par value of $0.001 per share, respectively.

Voting rights

Each outstanding share of common stock, is entitled to one vote on all matters submitted to a vote of holders of common stock, except for stockholders that beneficially own more than 20% of the shares of the outstanding common stock, in which case the board of directors (the “Board”) may declare that any shares of stock above such 20% do not have voting rights. The holders of common stock do not have cumulative voting rights in the election of directors.