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<div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">(1)</font></div>
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<div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">Includes options to purchase 2,744,302 shares of Common Stock granted under our 2010 Equity Incentive Plan, options to purchase 297,500 shares of Common Stock granted under our 2002 Long-Term Incentive Plan, and options to purchase 6,875 shares of Common Stock granted under our 1992 Stock Option Plan.</font></div>
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<div><font>(1)</font></div>
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<div><font>Includes options to purchase 2,744,302 shares of Common Stock granted under our 2010 Equity Incentive Plan, options to purchase 297,500 shares of Common Stock granted under our 2002 Long-Term Incentive Plan, and options to purchase 6,875 shares of Common Stock granted under our 1992 Stock Option Plan.</font></div>
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