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false --12-31 Q2 2015 2015-06-30 10-Q 0001157601 136442378 Yes Accelerated Filer SYNTA PHARMACEUTICALS CORP 12317000 14728000 6177000 5529000 12000 24000 8000 30000 50000000 27000000 1 600000 2000000 4000000 788000 36 9 30 36 2000000 2580000 2411000 200000 100000 100000 100000 P3M P3M P1Y P1Y 2 1 <div> <div style="margin-left:0pt;margin-right:0pt;">   7) Other Accrued Liabilities   Other accrued liabilities as of June 30, 2015 and December 31, 2014 consisted of the following (in thousands):   <div style="width:100%"><table cellpadding="0" cellspacing="0" style="border-collapse:collapse;width: 90.00%;margin-left:0pt;"> <tr> <td valign="bottom" style="width:66.66%;padding:0pt;">   </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:13.34%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> June 30, 2015 </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:13.34%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> December 31, 2014 </td> <td valign="bottom" style="width:01.10%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:66.66%;padding:0pt;">   </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:13.34%;padding:0pt;">   </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:13.34%;padding:0pt;">   </td> <td valign="bottom" style="width:01.10%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:66.66%;background-color: #CCEEFF;padding:0pt;"> Compensation and benefits </td> <td valign="bottom" style="width:02.78%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.26%;background-color: #CCEEFF;padding:0pt;"> $ </td> <td valign="bottom" style="width:12.08%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>2,995  </td> <td valign="bottom" style="width:02.78%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.26%;background-color: #CCEEFF;padding:0pt;"> $ </td> <td valign="bottom" style="width:12.08%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>3,852  </td> <td valign="bottom" style="width:01.10%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:66.66%;padding:0pt;"> Professional fees </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:13.34%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>1,393  </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:13.34%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>1,285  </td> <td valign="bottom" style="width:01.10%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:66.66%;background-color: #CCEEFF;padding:0pt;"> Other </td> <td valign="bottom" style="width:02.78%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:13.34%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>1,141  </td> <td valign="bottom" style="width:02.78%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:13.34%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>1,040  </td> <td valign="bottom" style="width:01.10%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:66.66%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.78%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:13.34%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.78%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:13.34%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.10%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:66.66%;padding:0pt;">   </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td valign="bottom" style="width:01.26%;padding:0pt;"> $ </td> <td valign="bottom" style="width:12.08%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>5,529  </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td valign="bottom" style="width:01.26%;padding:0pt;"> $ </td> <td valign="bottom" style="width:12.08%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>6,177  </td> <td valign="bottom" style="width:01.10%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:66.66%;padding:0pt;">   </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td valign="bottom" style="width:01.26%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:12.08%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td valign="bottom" style="width:01.26%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:12.08%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:01.10%;padding:0pt;">   </td> </tr> </table></div>   </div> </div> 0.03 4992000 12700000 <div> <div style="margin-left:0pt;margin-right:0pt;">   Other accrued liabilities as of June 30, 2015 and December 31, 2014 consisted of the following (in thousands):   <div style="width:100%"><table cellpadding="0" cellspacing="0" style="border-collapse:collapse;width: 100.00%;margin-left:0pt;"> <tr> <td valign="bottom" style="width:66.66%;padding:0pt;">   </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:13.34%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> June 30, 2015 </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:13.34%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> December 31, 2014 </td> <td valign="bottom" style="width:01.10%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:66.66%;padding:0pt;">   </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:13.34%;padding:0pt;">   </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:13.34%;padding:0pt;">   </td> <td valign="bottom" style="width:01.10%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:66.66%;background-color: #CCEEFF;padding:0pt;"> Compensation and benefits </td> <td valign="bottom" style="width:02.78%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.26%;background-color: #CCEEFF;padding:0pt;"> $ </td> <td valign="bottom" style="width:12.08%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>2,995  </td> <td valign="bottom" style="width:02.78%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.26%;background-color: #CCEEFF;padding:0pt;"> $ </td> <td valign="bottom" style="width:12.08%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>3,852  </td> <td valign="bottom" style="width:01.10%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:66.66%;padding:0pt;"> Professional fees </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:13.34%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>1,393  </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:13.34%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>1,285  </td> <td valign="bottom" style="width:01.10%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:66.66%;background-color: #CCEEFF;padding:0pt;"> Other </td> <td valign="bottom" style="width:02.78%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:13.34%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>1,141  </td> <td valign="bottom" style="width:02.78%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:13.34%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>1,040  </td> <td valign="bottom" style="width:01.10%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:66.66%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.78%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:13.34%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.78%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:13.34%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.10%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:66.66%;padding:0pt;">   </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td valign="bottom" style="width:01.26%;padding:0pt;"> $ </td> <td valign="bottom" style="width:12.08%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>5,529  </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td valign="bottom" style="width:01.26%;padding:0pt;"> $ </td> <td valign="bottom" style="width:12.08%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>6,177  </td> <td valign="bottom" style="width:01.10%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:66.66%;padding:0pt;">   </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td valign="bottom" style="width:01.26%;padding:0pt;">   </td> <td valign="bottom" style="width:12.08%;padding:0pt;">   </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td valign="bottom" style="width:01.26%;padding:0pt;">   </td> <td valign="bottom" style="width:12.08%;padding:0pt;">   </td> <td valign="bottom" style="width:01.10%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:66.66%;padding:0pt;">   </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td valign="bottom" style="width:01.26%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:12.08%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td valign="bottom" style="width:01.26%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:12.08%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:01.10%;padding:0pt;">   </td> </tr> </table></div>   </div> </div> <div> <div style="margin-left:0pt;margin-right:0pt;">   Stock-based compensation expense during the three months and six months ended June 30, 2015 and 2014 was as follows (in thousands):   <div style="width:100%"><table cellpadding="0" cellspacing="0" style="border-collapse:collapse;width: 100.00%;margin-left:0pt;"> <tr> <td valign="bottom" style="width:49.00%;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="5" valign="bottom" style="width:22.50%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> Three Months Ended June 30, </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="5" valign="bottom" style="width:22.50%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> Six Months Ended June 30, </td> <td valign="bottom" style="width:01.00%;padding:0pt;">   </td> </tr> <tr> <td valign="bottom" style="width:49.00%;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> 2015 </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> 2014 </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> 2015 </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> 2014 </td> <td valign="bottom" style="width:01.00%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:49.00%;background-color: #CCEEFF;padding:0pt;"> Stock-based compensation expense by type of award: </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.00%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:49.00%;padding:0pt;"> Employee stock options </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;padding:0pt;"> $ </td> <td valign="bottom" style="width:08.88%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>1,045 </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;padding:0pt;"> $ </td> <td valign="bottom" style="width:08.88%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>1,471 </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;padding:0pt;"> $ </td> <td valign="bottom" style="width:08.88%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>2,552 </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;padding:0pt;"> $ </td> <td valign="bottom" style="width:08.88%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>4,000 </td> <td valign="bottom" style="width:01.00%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:49.00%;background-color: #CCEEFF;padding:0pt;"> Restricted stock </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>(202 </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;"> ) </td> <td colspan="2" valign="bottom" style="width:10.00%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>42 </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>1 </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>99 </td> <td valign="bottom" style="width:01.00%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:49.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.00%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:49.00%;padding:0pt;"> Total stock-based compensation expense </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;padding:0pt;"> $ </td> <td valign="bottom" style="width:08.88%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>843 </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;padding:0pt;"> $ </td> <td valign="bottom" style="width:08.88%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>1,513 </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;padding:0pt;"> $ </td> <td valign="bottom" style="width:08.88%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>2,553 </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;padding:0pt;"> $ </td> <td valign="bottom" style="width:08.88%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>4,099 </td> <td valign="bottom" style="width:01.00%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:49.00%;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:08.88%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:08.88%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:08.88%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:08.88%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:01.00%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:49.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.00%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:49.00%;padding:0pt;"> Effect of stock-based compensation expense by line item: </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;padding:0pt;">   </td> <td valign="bottom" style="width:01.00%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:49.00%;background-color: #CCEEFF;padding:0pt;"> Research and development </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;background-color: #CCEEFF;padding:0pt;"> $ </td> <td valign="bottom" style="width:08.88%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>884 </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;background-color: #CCEEFF;padding:0pt;"> $ </td> <td valign="bottom" style="width:08.88%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>1,132 </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;background-color: #CCEEFF;padding:0pt;"> $ </td> <td valign="bottom" style="width:08.88%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>1,865 </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;background-color: #CCEEFF;padding:0pt;"> $ </td> <td valign="bottom" style="width:08.88%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>2,263 </td> <td valign="bottom" style="width:01.00%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:49.00%;padding:0pt;"> General and administrative </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>(41 </td> <td valign="bottom" style="width:02.50%;"> ) </td> <td colspan="2" valign="bottom" style="width:10.00%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>381 </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>688 </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>1,836 </td> <td valign="bottom" style="width:01.00%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:49.00%;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:01.00%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:49.00%;background-color: #CCEEFF;padding:0pt;"> Total stock-based compensation expense included in net loss </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;background-color: #CCEEFF;padding:0pt;"> $ </td> <td valign="bottom" style="width:08.88%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>843 </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;background-color: #CCEEFF;padding:0pt;"> $ </td> <td valign="bottom" style="width:08.88%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>1,513 </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;background-color: #CCEEFF;padding:0pt;"> $ </td> <td valign="bottom" style="width:08.88%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>2,553 </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;background-color: #CCEEFF;padding:0pt;"> $ </td> <td valign="bottom" style="width:08.88%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>4,099 </td> <td valign="bottom" style="width:01.00%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:49.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:08.88%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:08.88%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:08.88%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:08.88%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.00%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> </table></div>   </div> </div> 1300000 0.05 4.05

3139000

3018000

1285000

1393000

20483000

20820000

4000

-6000

702694000

747055000

4099000

4000000

1836000

2263000

99000

1513000

1471000

381000

1132000

42000

2553000

2552000

688000

1865000

1000

843000

1045000

-41000

884000

-202000

7606266

9565682

375000

100675000

101539000

99346000

100547000

51662000

51666000

66337000

66331000

12000

24000

8000

30000

51666000

66331000

42000

43000

22000

48490000

96811000

46024000

32003000

46024000

45004000

1020000

45004000

1020000

32003000

25670000

6333000

25670000

6333000

<div> <div style="margin-left:0pt;margin-right:0pt;">   (3) Cash, Cash Equivalents and Marketable Securities   A summary of cash, cash equivalents and available-for-sale marketable securities held by the Company as of June 30, 2015 and December 31, 2014 was as follows in thousands (see Note 2):   <div style="width:100%"><table cellpadding="0" cellspacing="0" style="border-collapse:collapse;width: 100.00%;margin-left:0pt;"> <tr> <td valign="bottom" style="width:41.00%;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="11" valign="bottom" style="width:55.50%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> June 30, 2015 </td> <td valign="bottom" style="width:01.00%;padding:0pt;">   </td> </tr> <tr> <td valign="bottom" style="width:41.00%;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> Cost </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> Unrealized gains </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> Unrealized losses </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> Fair value </td> <td valign="bottom" style="width:01.00%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:41.00%;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;padding:0pt;">   </td> <td valign="bottom" style="width:01.00%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:41.00%;background-color: #CCEEFF;padding:0pt;"> Cash and cash equivalents: </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.00%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:41.00%;padding:0pt;"> Cash and money market funds (Level 1) </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;padding:0pt;"> $ </td> <td valign="bottom" style="width:10.88%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>25,670 </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;padding:0pt;"> $ </td> <td valign="bottom" style="width:10.88%;padding:0pt;"> — </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;padding:0pt;"> $ </td> <td valign="bottom" style="width:10.88%;padding:0pt;"> — </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;padding:0pt;"> $ </td> <td valign="bottom" style="width:10.88%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>25,670 </td> <td valign="bottom" style="width:01.00%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:41.00%;background-color: #CCEEFF;padding:0pt;"> Corporate debt securities due within 3 months of date of purchase (Level 2) </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>6,333 </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;background-color: #CCEEFF;padding:0pt;"> — </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;background-color: #CCEEFF;padding:0pt;"> — </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>6,333 </td> <td valign="bottom" style="width:01.00%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:41.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.00%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:41.00%;padding:0pt;"> Total cash and cash equivalents </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;padding:0pt;"> $ </td> <td valign="bottom" style="width:10.88%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>32,003 </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;padding:0pt;"> $ </td> <td valign="bottom" style="width:10.88%;padding:0pt;"> — </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;padding:0pt;"> $ </td> <td valign="bottom" style="width:10.88%;padding:0pt;"> — </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;padding:0pt;"> $ </td> <td valign="bottom" style="width:10.88%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>32,003 </td> <td valign="bottom" style="width:01.00%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:41.00%;background-color: #CCEEFF;padding:0pt;"> Marketable securities: </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.00%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:41.00%;padding:0pt;"> Corporate debt securities due within 1 year of date of purchase (Level 2) </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>66,337 </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>24 </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>(30 </td> <td valign="bottom" style="width:02.50%;"> ) </td> <td colspan="2" valign="bottom" style="width:12.00%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>66,331 </td> <td valign="bottom" style="width:01.00%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:41.00%;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:01.00%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:41.00%;background-color: #CCEEFF;padding:0pt;"> Total cash, cash equivalents and marketable securities </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;background-color: #CCEEFF;padding:0pt;"> $ </td> <td valign="bottom" style="width:10.88%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>98,340 </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;background-color: #CCEEFF;padding:0pt;"> $ </td> <td valign="bottom" style="width:10.88%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>24 </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;background-color: #CCEEFF;padding:0pt;"> $ </td> <td valign="bottom" style="width:10.88%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>(30 </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;"> ) </td> <td valign="bottom" style="width:01.12%;background-color: #CCEEFF;padding:0pt;"> $ </td> <td valign="bottom" style="width:10.88%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>98,334 </td> <td valign="bottom" style="width:01.00%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:41.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:10.88%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:10.88%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:10.88%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:10.88%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.00%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> </table></div>   <div style="width:100%"><table cellpadding="0" cellspacing="0" style="border-collapse:collapse;width: 100.00%;margin-left:0pt;"> <tr> <td valign="bottom" style="width:41.00%;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="11" valign="bottom" style="width:55.50%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> December 31, 2014 </td> <td valign="bottom" style="width:01.00%;padding:0pt;">   </td> </tr> <tr> <td valign="bottom" style="width:41.00%;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> Cost </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> Unrealized gains </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> Unrealized losses </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> Fair value </td> <td valign="bottom" style="width:01.00%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:41.00%;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;padding:0pt;">   </td> <td valign="bottom" style="width:01.00%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:41.00%;background-color: #CCEEFF;padding:0pt;"> Cash and cash equivalents: </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.00%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:41.00%;padding:0pt;"> Cash and money market funds (Level 1) </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;padding:0pt;"> $ </td> <td valign="bottom" style="width:10.88%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>45,004 </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;padding:0pt;"> $ </td> <td valign="bottom" style="width:10.88%;padding:0pt;"> — </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;padding:0pt;"> $ </td> <td valign="bottom" style="width:10.88%;padding:0pt;"> — </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;padding:0pt;"> $ </td> <td valign="bottom" style="width:10.88%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>45,004 </td> <td valign="bottom" style="width:01.00%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:41.00%;background-color: #CCEEFF;padding:0pt;"> Corporate debt securities due within 3 months of date of purchase (Level 2) </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>1,020 </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;background-color: #CCEEFF;padding:0pt;"> — </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;background-color: #CCEEFF;padding:0pt;"> — </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>1,020 </td> <td valign="bottom" style="width:01.00%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:41.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.00%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:41.00%;padding:0pt;"> Total cash and cash equivalents </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;padding:0pt;"> $ </td> <td valign="bottom" style="width:10.88%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>46,024 </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;padding:0pt;"> $ </td> <td valign="bottom" style="width:10.88%;padding:0pt;"> — </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;padding:0pt;"> $ </td> <td valign="bottom" style="width:10.88%;padding:0pt;"> — </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;padding:0pt;"> $ </td> <td valign="bottom" style="width:10.88%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>46,024 </td> <td valign="bottom" style="width:01.00%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:41.00%;background-color: #CCEEFF;padding:0pt;"> Marketable securities: </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.00%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:41.00%;padding:0pt;"> Corporate debt securities due within 1 year of date of purchase (Level 2) </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>51,662 </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>12 </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>(8 </td> <td valign="bottom" style="width:02.50%;"> ) </td> <td colspan="2" valign="bottom" style="width:12.00%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>51,666 </td> <td valign="bottom" style="width:01.00%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:41.00%;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:01.00%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:41.00%;background-color: #CCEEFF;padding:0pt;"> Total cash, cash equivalents and marketable securities </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;background-color: #CCEEFF;padding:0pt;"> $ </td> <td valign="bottom" style="width:10.88%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>97,686 </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;background-color: #CCEEFF;padding:0pt;"> $ </td> <td valign="bottom" style="width:10.88%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>12 </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;background-color: #CCEEFF;padding:0pt;"> $ </td> <td valign="bottom" style="width:10.88%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>(8 </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;"> ) </td> <td valign="bottom" style="width:01.12%;background-color: #CCEEFF;padding:0pt;"> $ </td> <td valign="bottom" style="width:10.88%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>97,690 </td> <td valign="bottom" style="width:01.00%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:41.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:10.88%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:10.88%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:10.88%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:10.88%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.00%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> </table></div>   </div> </div>

97686000

97690000

98340000

98334000

0.0001

200000000

109120670

134070670

109120670

134070670

11000

13000

-45857000

-22287000

-40517000

-19812000

0.0975

0.1335

108000

337000

100000

337000

100000

<div> <div style="margin-left:0pt;margin-right:0pt;">   (6) Stock-Based Compensation   The Company’s 2006 Stock Plan provided for the grant of incentive stock options, non-statutory stock options and non-vested restricted stock to employees, officers, directors and consultants of the Company. In January 2015, the number of shares of common stock reserved for issuance under the 2006 Stock Plan was increased from 10,300,000 to 11,600,000 pursuant to an “evergreen” provision, which provides for an annual increase based on the lesser of 1,300,000 shares, 5% of the Company’s then outstanding shares of common stock, or such other amount as the board of directors may determine. This increase was approved by the board of directors in December 2014. In June 2015, upon obtaining stockholder approval at its annual shareholder meeting, the Company implemented its new 2015 Stock Plan and reserved 8,741,000 shares of common stock for future issuance. In June 2015, the Company terminated its 2006 Stock Plan. The administration of these stock plans is under the general supervision of the compensation committee of the board of directors. The exercise price of the stock options is determined by the compensation committee of the board of directors, provided that incentive stock options are granted with an exercise price not less than fair market value of the common stock on the date of grant and expire no later than ten years from the date the option is granted. Options generally vest over four years. As of June 30, 2015, the Company had options outstanding to purchase 9,565,682 shares of its common stock, which includes options outstanding under its 2001 Stock Plan and 2006 Stock Plan that were terminated in March 2006 and June 2015, respectively. As of June 30, 2015, 8,740,968 shares were available for future issuance.   The following table summarizes stock option activity during the six months ended June 30, 2015:   <div style="width:100%"><table cellpadding="0" cellspacing="0" style="border-collapse:collapse;width: 90.00%;margin-left:0pt;"> <tr> <td valign="bottom" style="width:62.22%;padding:0pt;">   </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td valign="bottom" style="width:13.34%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> Shares </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:17.78%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> Weighted average exercise price per share </td> <td valign="bottom" style="width:01.10%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:62.22%;background-color: #CCEEFF;padding:0pt;"> Outstanding at January 1, 2015 </td> <td valign="bottom" style="width:02.78%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:13.34%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>8,829,343 </td> <td valign="bottom" style="width:02.78%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.26%;background-color: #CCEEFF;padding:0pt;"> $ </td> <td valign="bottom" style="width:16.52%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>6.17 </td> <td valign="bottom" style="width:01.10%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:62.22%;padding:0pt;"> Options granted </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td valign="bottom" style="width:13.34%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>2,464,146 </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:17.78%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>2.38 </td> <td valign="bottom" style="width:01.10%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:62.22%;background-color: #CCEEFF;padding:0pt;"> Options exercised </td> <td valign="bottom" style="width:02.78%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:13.34%;background-color: #CCEEFF;padding:0pt;"> — </td> <td valign="bottom" style="width:02.78%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:17.78%;background-color: #CCEEFF;padding:0pt;"> — </td> <td valign="bottom" style="width:01.10%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:62.22%;padding:0pt;"> Options cancelled </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td valign="bottom" style="width:13.34%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>(1,727,807 </td> <td valign="bottom" style="width:02.78%;"> ) </td> <td colspan="2" valign="bottom" style="width:17.78%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>5.44 </td> <td valign="bottom" style="width:01.10%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:62.22%;padding:0pt;">   </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td valign="bottom" style="width:13.34%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:17.78%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:01.10%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:62.22%;background-color: #CCEEFF;padding:0pt;"> Outstanding at June 30, 2015 </td> <td valign="bottom" style="width:02.78%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:13.34%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>9,565,682 </td> <td valign="bottom" style="width:02.78%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.26%;background-color: #CCEEFF;padding:0pt;"> $ </td> <td valign="bottom" style="width:16.52%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>5.32 </td> <td valign="bottom" style="width:01.10%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:62.22%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.78%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:13.34%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.78%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.26%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:16.52%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.10%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:62.22%;padding:0pt;"> Exercisable at June 30, 2015 </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td valign="bottom" style="width:13.34%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>5,606,833 </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td valign="bottom" style="width:01.26%;padding:0pt;"> $ </td> <td valign="bottom" style="width:16.52%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>6.36 </td> <td valign="bottom" style="width:01.10%;padding:0pt;">   </td> </tr> </table></div>   The total cash received by the Company as a result of stock option exercises during the six months ended June 30, 2015 and 2014 was $0 and $0.8 million, respectively. The weighted-average grant date fair values of options granted during the three months ended June 30, 2015 and 2014 were $1.87 and $3.39, respectively, and during the six months ended June 30, 2015 and 2014 were $1.91 and $5.01, respectively.   Non-Vested (“Restricted”) Stock Awards with Service Conditions   The Company’s share-based compensation plans provide for awards of restricted shares of common stock to employees, officers, directors and consultants to the Company. Restricted stock awards are subject to forfeiture if employment or service terminates during the prescribed retention period. Restricted shares vest over the service period. The total fair value of restricted stock that vested in each of the six months ended June 30, 2015 and 2014 was $0.1 million.   The following table summarizes unvested restricted share activity during the six months ended June 30, 2015:   <div style="width:100%"><table cellpadding="0" cellspacing="0" style="border-collapse:collapse;width: 90.00%;margin-left:0pt;"> <tr> <td valign="bottom" style="width:66.68%;padding:0pt;">   </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td valign="bottom" style="width:13.34%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> Shares </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:13.34%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> Weighted average grant date fair value per share </td> <td valign="bottom" style="width:01.08%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:66.68%;background-color: #CCEEFF;padding:0pt;"> Outstanding at January 1, 2015 </td> <td valign="bottom" style="width:02.78%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:13.34%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>744,514 </td> <td valign="bottom" style="width:02.78%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.26%;background-color: #CCEEFF;padding:0pt;"> $ </td> <td valign="bottom" style="width:12.08%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>3.65 </td> <td valign="bottom" style="width:01.08%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:66.68%;padding:0pt;"> Vested </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td valign="bottom" style="width:13.34%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>(19,514 </td> <td valign="bottom" style="width:02.78%;"> ) </td> <td colspan="2" valign="bottom" style="width:13.34%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>4.10 </td> <td valign="bottom" style="width:01.08%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:66.68%;background-color: #CCEEFF;padding:0pt;"> Granted </td> <td valign="bottom" style="width:02.78%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:13.34%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>150,000 </td> <td valign="bottom" style="width:02.78%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:13.34%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>2.40 </td> <td valign="bottom" style="width:01.08%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:66.68%;padding:0pt;"> Forfeited </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td valign="bottom" style="width:13.34%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>(500,000 </td> <td valign="bottom" style="width:02.78%;"> ) </td> <td colspan="2" valign="bottom" style="width:13.34%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>4.00 </td> <td valign="bottom" style="width:01.08%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:66.68%;padding:0pt;">   </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td valign="bottom" style="width:13.34%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:13.34%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:01.08%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:66.68%;background-color: #CCEEFF;padding:0pt;"> Outstanding at June 30, 2015 </td> <td valign="bottom" style="width:02.78%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:13.34%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>375,000 </td> <td valign="bottom" style="width:02.78%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.26%;background-color: #CCEEFF;padding:0pt;"> $ </td> <td valign="bottom" style="width:12.08%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>2.67 </td> <td valign="bottom" style="width:01.08%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:66.68%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.78%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:13.34%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.78%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.26%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:12.08%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.08%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> </table></div>   Stock-Based Compensation Expense   For the three months and six months ended June 30, 2015 and 2014, the fair value of each employee stock option award was estimated on the date of grant based on the fair value method using the Black-Scholes option pricing valuation model with the following weighted average assumptions:   <div style="width:100%"><table cellpadding="0" cellspacing="0" style="border-collapse:collapse;width: 100.00%;margin-left:0pt;"> <tr> <td valign="bottom" style="width:41.00%;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="3" valign="bottom" style="width:26.50%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> Three Months Ended June 30, </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="3" valign="bottom" style="width:26.50%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> Six Months Ended June 30, </td> <td valign="bottom" style="width:01.00%;padding:0pt;">   </td> </tr> <tr> <td valign="bottom" style="width:41.00%;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:12.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> 2015 </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:12.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> 2014 </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:12.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> 2015 </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:12.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> 2014 </td> <td valign="bottom" style="width:01.00%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:41.00%;background-color: #CCEEFF;padding:0pt;"> Risk-free interest rate </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:12.00%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>1.89  </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;"> % </td> <td valign="bottom" style="width:12.00%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>2.00  </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;"> % </td> <td valign="bottom" style="width:12.00%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>1.81  </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;"> % </td> <td valign="bottom" style="width:12.00%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>1.84  </td> <td valign="bottom" style="width:01.00%;background-color: #CCEEFF;padding:0pt;"> % </td> </tr> <tr> <td valign="top" style="width:41.00%;padding:0pt;"> Expected life in years </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:12.00%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>6.23  </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:12.00%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>6.25  </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:12.00%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>6.24  </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:12.00%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>6.25  </td> <td valign="bottom" style="width:01.00%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:41.00%;background-color: #CCEEFF;padding:0pt;"> Volatility </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:12.00%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>99  </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;"> % </td> <td valign="bottom" style="width:12.00%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>104  </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;"> % </td> <td valign="bottom" style="width:12.00%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>101  </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;"> % </td> <td valign="bottom" style="width:12.00%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>104  </td> <td valign="bottom" style="width:01.00%;background-color: #CCEEFF;padding:0pt;"> % </td> </tr> <tr> <td valign="top" style="width:41.00%;padding:0pt;"> Expected dividend yield </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:12.00%;padding:0pt;"> — </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:12.00%;padding:0pt;"> — </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:12.00%;padding:0pt;"> — </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:12.00%;padding:0pt;"> — </td> <td valign="bottom" style="width:01.00%;padding:0pt;">   </td> </tr> </table></div>   Stock-based compensation expense during the three months and six months ended June 30, 2015 and 2014 was as follows (in thousands):   <div style="width:100%"><table cellpadding="0" cellspacing="0" style="border-collapse:collapse;width: 100.00%;margin-left:0pt;"> <tr> <td valign="bottom" style="width:49.00%;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="5" valign="bottom" style="width:22.50%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> Three Months Ended June 30, </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="5" valign="bottom" style="width:22.50%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> Six Months Ended June 30, </td> <td valign="bottom" style="width:01.00%;padding:0pt;">   </td> </tr> <tr> <td valign="bottom" style="width:49.00%;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> 2015 </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> 2014 </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> 2015 </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> 2014 </td> <td valign="bottom" style="width:01.00%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:49.00%;background-color: #CCEEFF;padding:0pt;"> Stock-based compensation expense by type of award: </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.00%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:49.00%;padding:0pt;"> Employee stock options </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;padding:0pt;"> $ </td> <td valign="bottom" style="width:08.88%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>1,045 </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;padding:0pt;"> $ </td> <td valign="bottom" style="width:08.88%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>1,471 </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;padding:0pt;"> $ </td> <td valign="bottom" style="width:08.88%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>2,552 </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;padding:0pt;"> $ </td> <td valign="bottom" style="width:08.88%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>4,000 </td> <td valign="bottom" style="width:01.00%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:49.00%;background-color: #CCEEFF;padding:0pt;"> Restricted stock </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>(202 </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;"> ) </td> <td colspan="2" valign="bottom" style="width:10.00%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>42 </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>1 </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>99 </td> <td valign="bottom" style="width:01.00%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:49.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.00%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:49.00%;padding:0pt;"> Total stock-based compensation expense </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;padding:0pt;"> $ </td> <td valign="bottom" style="width:08.88%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>843 </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;padding:0pt;"> $ </td> <td valign="bottom" style="width:08.88%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>1,513 </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;padding:0pt;"> $ </td> <td valign="bottom" style="width:08.88%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>2,553 </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;padding:0pt;"> $ </td> <td valign="bottom" style="width:08.88%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>4,099 </td> <td valign="bottom" style="width:01.00%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:49.00%;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:08.88%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:08.88%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:08.88%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:08.88%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:01.00%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:49.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.00%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:49.00%;padding:0pt;"> Effect of stock-based compensation expense by line item: </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;padding:0pt;">   </td> <td valign="bottom" style="width:01.00%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:49.00%;background-color: #CCEEFF;padding:0pt;"> Research and development </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;background-color: #CCEEFF;padding:0pt;"> $ </td> <td valign="bottom" style="width:08.88%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>884 </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;background-color: #CCEEFF;padding:0pt;"> $ </td> <td valign="bottom" style="width:08.88%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>1,132 </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;background-color: #CCEEFF;padding:0pt;"> $ </td> <td valign="bottom" style="width:08.88%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>1,865 </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;background-color: #CCEEFF;padding:0pt;"> $ </td> <td valign="bottom" style="width:08.88%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>2,263 </td> <td valign="bottom" style="width:01.00%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:49.00%;padding:0pt;"> General and administrative </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>(41 </td> <td valign="bottom" style="width:02.50%;"> ) </td> <td colspan="2" valign="bottom" style="width:10.00%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>381 </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>688 </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>1,836 </td> <td valign="bottom" style="width:01.00%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:49.00%;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:10.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:01.00%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:49.00%;background-color: #CCEEFF;padding:0pt;"> Total stock-based compensation expense included in net loss </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;background-color: #CCEEFF;padding:0pt;"> $ </td> <td valign="bottom" style="width:08.88%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>843 </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;background-color: #CCEEFF;padding:0pt;"> $ </td> <td valign="bottom" style="width:08.88%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>1,513 </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;background-color: #CCEEFF;padding:0pt;"> $ </td> <td valign="bottom" style="width:08.88%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>2,553 </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;background-color: #CCEEFF;padding:0pt;"> $ </td> <td valign="bottom" style="width:08.86%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>4,099 </td> <td valign="bottom" style="width:01.00%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:49.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:08.88%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:08.88%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:08.88%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:08.86%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.00%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> </table></div>   Unrecognized stock-based compensation expense as of June 30, 2015 was as follows (dollars in thousands):   <div style="width:100%"><table cellpadding="0" cellspacing="0" style="border-collapse:collapse;width: 90.00%;margin-left:0pt;"> <tr> <td valign="bottom" style="width:66.66%;padding:0pt;">   </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:13.34%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> Unrecognized stock compensation expense </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td valign="bottom" style="width:13.34%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> Weighted average remaining period (in years) </td> <td valign="bottom" style="width:01.10%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:66.66%;background-color: #CCEEFF;padding:0pt;"> Stock options </td> <td valign="bottom" style="width:02.78%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.26%;background-color: #CCEEFF;padding:0pt;"> $ </td> <td valign="bottom" style="width:12.08%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>10,054  </td> <td valign="bottom" style="width:02.78%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:13.34%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>2.67  </td> <td valign="bottom" style="width:01.10%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:66.66%;padding:0pt;"> Restricted stock </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:13.34%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>905  </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td valign="bottom" style="width:13.34%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>2.63  </td> <td valign="bottom" style="width:01.10%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:66.66%;padding:0pt;">   </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:13.34%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td valign="bottom" style="width:13.34%;padding:0pt;">   </td> <td valign="bottom" style="width:01.10%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:66.66%;background-color: #CCEEFF;padding:0pt;"> Total </td> <td valign="bottom" style="width:02.78%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.26%;background-color: #CCEEFF;padding:0pt;"> $ </td> <td valign="bottom" style="width:12.08%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>10,959  </td> <td valign="bottom" style="width:02.78%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:13.34%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>2.67  </td> <td valign="bottom" style="width:01.10%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:66.66%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.78%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.26%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:12.08%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.78%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:13.34%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.10%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> </table></div>   </div> </div>

-0.51

-0.24

-0.34

-0.15

3852000

2995000

800000

10959000

10054000

905000

P2Y8M1D

P2Y7M17D

8264000

2940000

7277000

3127000

-1363000

-121000

-506000

-648000

-58000

-27000

506000

557000

1200000

35000

600000

14000

700000

24000

300000

11000

-1235000

-585000

-671000

-296000

1055000

592000

35539000

32557000

100675000

101539000

30889000

32525000

4650000

32000

4610000

4607000

48321000

-14021000

61790000

37186000

27675000

-14702000

-41144000

-36505000

-45843000

-22286000

-40507000

-19800000

44608000

21701000

39836000

19504000

-44608000

-21701000

-39836000

-19504000

1040000

1141000

305000

278000

-14000

-1000

-10000

-12000

17715000

78923000

48000

27000

0.0001

5000000

1656000

2213000

61673000

29110000

600000

2000000

12900000

22500000

41800000

45438000

64248000

21507000

3126000

12217000

1176000

4988000

21534000

3132000

12217000

1176000

5009000

1024000

714000

21000

20000

4854000

4604000

36344000

18761000

32559000

16377000

-637573000

-678080000

<div> <div style="margin-left:0pt;margin-right:0pt;">   <div style="width:100%"><table cellpadding="0" cellspacing="0" style="border-collapse:collapse;width: 100.00%;margin-left:0pt;"> <tr> <td valign="bottom" style="width:66.66%;padding:0pt;">   </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td colspan="3" valign="bottom" style="width:29.46%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> June 30, </td> <td valign="bottom" style="width:01.10%;padding:0pt;">   </td> </tr> <tr> <td valign="bottom" style="width:66.66%;padding:0pt;">   </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td valign="bottom" style="width:13.34%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> 2015 </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td valign="bottom" style="width:13.34%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> 2014 </td> <td valign="bottom" style="width:01.10%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:66.66%;background-color: #CCEEFF;padding:0pt;"> Common stock options </td> <td valign="bottom" style="width:02.78%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:13.34%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>9,565,682  </td> <td valign="bottom" style="width:02.78%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:13.34%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>7,606,266  </td> <td valign="bottom" style="width:01.10%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:66.66%;padding:0pt;"> Unvested restricted common stock </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td valign="bottom" style="width:13.34%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>375,000  </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td valign="bottom" style="width:13.34%;padding:0pt;"> — </td> <td valign="bottom" style="width:01.10%;padding:0pt;">   </td> </tr> </table></div>   </div> </div>

<div> <div style="margin-left:0pt;margin-right:0pt;">   A summary of cash, cash equivalents and available-for-sale marketable securities held by the Company as of June 30, 2015 and December 31, 2014 was as follows in thousands (see Note 2):   <div style="width:100%"><table cellpadding="0" cellspacing="0" style="border-collapse:collapse;width: 100.00%;margin-left:0pt;"> <tr> <td valign="bottom" style="width:41.00%;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="11" valign="bottom" style="width:55.50%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> June 30, 2015 </td> <td valign="bottom" style="width:01.00%;padding:0pt;">   </td> </tr> <tr> <td valign="bottom" style="width:41.00%;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> Cost </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> Unrealized gains </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> Unrealized losses </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> Fair value </td> <td valign="bottom" style="width:01.00%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:41.00%;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;padding:0pt;">   </td> <td valign="bottom" style="width:01.00%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:41.00%;background-color: #CCEEFF;padding:0pt;"> Cash and cash equivalents: </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.00%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:41.00%;padding:0pt;"> Cash and money market funds (Level 1) </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;padding:0pt;"> $ </td> <td valign="bottom" style="width:10.88%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>25,670 </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;padding:0pt;"> $ </td> <td valign="bottom" style="width:10.88%;padding:0pt;"> — </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;padding:0pt;"> $ </td> <td valign="bottom" style="width:10.88%;padding:0pt;"> — </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;padding:0pt;"> $ </td> <td valign="bottom" style="width:10.88%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>25,670 </td> <td valign="bottom" style="width:01.00%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:41.00%;background-color: #CCEEFF;padding:0pt;"> Corporate debt securities due within 3 months of date of purchase (Level 2) </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>6,333 </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;background-color: #CCEEFF;padding:0pt;"> — </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;background-color: #CCEEFF;padding:0pt;"> — </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>6,333 </td> <td valign="bottom" style="width:01.00%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:41.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.00%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:41.00%;padding:0pt;"> Total cash and cash equivalents </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;padding:0pt;"> $ </td> <td valign="bottom" style="width:10.88%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>32,003 </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;padding:0pt;"> $ </td> <td valign="bottom" style="width:10.88%;padding:0pt;"> — </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;padding:0pt;"> $ </td> <td valign="bottom" style="width:10.88%;padding:0pt;"> — </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;padding:0pt;"> $ </td> <td valign="bottom" style="width:10.88%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>32,003 </td> <td valign="bottom" style="width:01.00%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:41.00%;background-color: #CCEEFF;padding:0pt;"> Marketable securities: </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.00%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:41.00%;padding:0pt;"> Corporate debt securities due within 1 year of date of purchase (Level 2) </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>66,337 </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>24 </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>(30 </td> <td valign="bottom" style="width:02.50%;"> ) </td> <td colspan="2" valign="bottom" style="width:12.00%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>66,331 </td> <td valign="bottom" style="width:01.00%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:41.00%;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:01.00%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:41.00%;background-color: #CCEEFF;padding:0pt;"> Total cash, cash equivalents and marketable securities </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;background-color: #CCEEFF;padding:0pt;"> $ </td> <td valign="bottom" style="width:10.88%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>98,340 </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;background-color: #CCEEFF;padding:0pt;"> $ </td> <td valign="bottom" style="width:10.88%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>24 </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;background-color: #CCEEFF;padding:0pt;"> $ </td> <td valign="bottom" style="width:10.88%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>(30 </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;"> ) </td> <td valign="bottom" style="width:01.12%;background-color: #CCEEFF;padding:0pt;"> $ </td> <td valign="bottom" style="width:10.88%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>98,334 </td> <td valign="bottom" style="width:01.00%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:41.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:10.88%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:10.88%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:10.88%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:10.88%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.00%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> </table></div> <div style="width:100%"><table cellpadding="0" cellspacing="0" style="border-collapse:collapse;width: 100.00%;margin-left:0pt;"> <tr> <td valign="bottom" style="width:41.00%;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="11" valign="bottom" style="width:55.50%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> December 31, 2014 </td> <td valign="bottom" style="width:01.00%;padding:0pt;">   </td> </tr> <tr> <td valign="bottom" style="width:41.00%;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> Cost </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> Unrealized gains </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> Unrealized losses </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> Fair value </td> <td valign="bottom" style="width:01.00%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:41.00%;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;padding:0pt;">   </td> <td valign="bottom" style="width:01.00%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:41.00%;background-color: #CCEEFF;padding:0pt;"> Cash and cash equivalents: </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.00%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:41.00%;padding:0pt;"> Cash and money market funds (Level 1) </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;padding:0pt;"> $ </td> <td valign="bottom" style="width:10.88%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>45,004 </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;padding:0pt;"> $ </td> <td valign="bottom" style="width:10.88%;padding:0pt;"> — </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;padding:0pt;"> $ </td> <td valign="bottom" style="width:10.88%;padding:0pt;"> — </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;padding:0pt;"> $ </td> <td valign="bottom" style="width:10.88%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>45,004 </td> <td valign="bottom" style="width:01.00%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:41.00%;background-color: #CCEEFF;padding:0pt;"> Corporate debt securities due within 3 months of date of purchase (Level 2) </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>1,020 </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;background-color: #CCEEFF;padding:0pt;"> — </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;background-color: #CCEEFF;padding:0pt;"> — </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>1,020 </td> <td valign="bottom" style="width:01.00%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:41.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.00%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:41.00%;padding:0pt;"> Total cash and cash equivalents </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;padding:0pt;"> $ </td> <td valign="bottom" style="width:10.88%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>46,024 </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;padding:0pt;"> $ </td> <td valign="bottom" style="width:10.88%;padding:0pt;"> — </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;padding:0pt;"> $ </td> <td valign="bottom" style="width:10.88%;padding:0pt;"> — </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;padding:0pt;"> $ </td> <td valign="bottom" style="width:10.88%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>46,024 </td> <td valign="bottom" style="width:01.00%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:41.00%;background-color: #CCEEFF;padding:0pt;"> Marketable securities: </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.00%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:41.00%;padding:0pt;"> Corporate debt securities due within 1 year of date of purchase (Level 2) </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>51,662 </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>12 </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>(8 </td> <td valign="bottom" style="width:02.50%;"> ) </td> <td colspan="2" valign="bottom" style="width:12.00%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>51,666 </td> <td valign="bottom" style="width:01.00%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:41.00%;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:12.00%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:01.00%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:41.00%;background-color: #CCEEFF;padding:0pt;"> Total cash, cash equivalents and marketable securities </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;background-color: #CCEEFF;padding:0pt;"> $ </td> <td valign="bottom" style="width:10.88%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>97,686 </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;background-color: #CCEEFF;padding:0pt;"> $ </td> <td valign="bottom" style="width:10.88%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>12 </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;background-color: #CCEEFF;padding:0pt;"> $ </td> <td valign="bottom" style="width:10.88%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>(8 </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;"> ) </td> <td valign="bottom" style="width:01.12%;background-color: #CCEEFF;padding:0pt;"> $ </td> <td valign="bottom" style="width:10.88%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>97,690 </td> <td valign="bottom" style="width:01.00%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:41.00%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:10.88%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:10.88%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:10.88%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.50%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.12%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:10.88%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.00%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> </table></div> </div> </div>

<div> <div style="margin-left:0pt;margin-right:0pt;">   <div style="width:100%"><table cellpadding="0" cellspacing="0" style="border-collapse:collapse;width: 100.00%;margin-left:0pt;"> <tr> <td valign="bottom" style="width:66.68%;padding:0pt;">   </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td valign="bottom" style="width:13.34%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> Shares </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:13.34%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> Weighted average grant date fair value per share </td> <td valign="bottom" style="width:01.08%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:66.68%;background-color: #CCEEFF;padding:0pt;"> Outstanding at January 1, 2015 </td> <td valign="bottom" style="width:02.78%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:13.34%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>744,514 </td> <td valign="bottom" style="width:02.78%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.26%;background-color: #CCEEFF;padding:0pt;"> $ </td> <td valign="bottom" style="width:12.08%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>3.65 </td> <td valign="bottom" style="width:01.08%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:66.68%;padding:0pt;"> Vested </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td valign="bottom" style="width:13.34%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>(19,514 </td> <td valign="bottom" style="width:02.78%;"> ) </td> <td colspan="2" valign="bottom" style="width:13.34%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>4.10 </td> <td valign="bottom" style="width:01.08%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:66.68%;background-color: #CCEEFF;padding:0pt;"> Granted </td> <td valign="bottom" style="width:02.78%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:13.34%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>150,000 </td> <td valign="bottom" style="width:02.78%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:13.34%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>2.40 </td> <td valign="bottom" style="width:01.08%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:66.68%;padding:0pt;"> Forfeited </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td valign="bottom" style="width:13.34%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>(500,000 </td> <td valign="bottom" style="width:02.78%;"> ) </td> <td colspan="2" valign="bottom" style="width:13.34%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>4.00 </td> <td valign="bottom" style="width:01.08%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:66.68%;padding:0pt;">   </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td valign="bottom" style="width:13.34%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:13.34%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:01.08%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:66.68%;background-color: #CCEEFF;padding:0pt;"> Outstanding at June 30, 2015 </td> <td valign="bottom" style="width:02.78%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:13.34%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>375,000 </td> <td valign="bottom" style="width:02.78%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.26%;background-color: #CCEEFF;padding:0pt;"> $ </td> <td valign="bottom" style="width:12.08%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>2.67 </td> <td valign="bottom" style="width:01.08%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:66.68%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.78%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:13.34%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.78%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.26%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:12.08%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.08%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> </table></div>   </div> </div>

<div> <div style="margin-left:0pt;margin-right:0pt;">   <div style="width:100%"><table cellpadding="0" cellspacing="0" style="border-collapse:collapse;width: 100.00%;margin-left:0pt;"> <tr> <td valign="bottom" style="width:62.22%;padding:0pt;">   </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td valign="bottom" style="width:13.34%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> Shares </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:17.78%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> Weighted average exercise price per share </td> <td valign="bottom" style="width:01.10%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:62.22%;background-color: #CCEEFF;padding:0pt;"> Outstanding at January 1, 2015 </td> <td valign="bottom" style="width:02.78%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:13.34%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>8,829,343 </td> <td valign="bottom" style="width:02.78%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.26%;background-color: #CCEEFF;padding:0pt;"> $ </td> <td valign="bottom" style="width:16.52%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>6.17 </td> <td valign="bottom" style="width:01.10%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:62.22%;padding:0pt;"> Options granted </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td valign="bottom" style="width:13.34%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>2,464,146 </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:17.78%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>2.38 </td> <td valign="bottom" style="width:01.10%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:62.22%;background-color: #CCEEFF;padding:0pt;"> Options exercised </td> <td valign="bottom" style="width:02.78%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:13.34%;background-color: #CCEEFF;padding:0pt;"> — </td> <td valign="bottom" style="width:02.78%;background-color: #CCEEFF;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:17.78%;background-color: #CCEEFF;padding:0pt;"> — </td> <td valign="bottom" style="width:01.10%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:62.22%;padding:0pt;"> Options cancelled </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td valign="bottom" style="width:13.34%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>(1,727,807 </td> <td valign="bottom" style="width:02.78%;"> ) </td> <td colspan="2" valign="bottom" style="width:17.78%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>5.44 </td> <td valign="bottom" style="width:01.10%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:62.22%;padding:0pt;">   </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td valign="bottom" style="width:13.34%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td colspan="2" valign="bottom" style="width:17.78%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;">   </td> <td valign="bottom" style="width:01.10%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:62.22%;background-color: #CCEEFF;padding:0pt;"> Outstanding at June 30, 2015 </td> <td valign="bottom" style="width:02.78%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:13.34%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>9,565,682 </td> <td valign="bottom" style="width:02.78%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.26%;background-color: #CCEEFF;padding:0pt;"> $ </td> <td valign="bottom" style="width:16.52%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>5.32 </td> <td valign="bottom" style="width:01.10%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:62.22%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.78%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:13.34%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:02.78%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.26%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:16.52%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:2pt double #000000 ;border-right:1pt none #D9D9D9 ;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:01.10%;background-color: #CCEEFF;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:62.22%;padding:0pt;"> Exercisable at June 30, 2015 </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td valign="bottom" style="width:13.34%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>5,606,833 </td> <td valign="bottom" style="width:02.78%;padding:0pt;">   </td> <td valign="bottom" style="width:01.26%;padding:0pt;"> $ </td> <td valign="bottom" style="width:16.52%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>6.36 </td> <td valign="bottom" style="width:01.10%;padding:0pt;">   </td> </tr> </table></div>   </div> </div>

<div> <div style="margin-left:0pt;margin-right:0pt;">   <div style="width:100%"><table cellpadding="0" cellspacing="0" style="border-collapse:collapse;width: 100.00%;margin-left:0pt;"> <tr> <td valign="bottom" style="width:40.88%;padding:0pt;">   </td> <td valign="bottom" style="width:02.42%;padding:0pt;">   </td> <td colspan="3" valign="bottom" style="width:26.24%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> Three Months Ended June 30, </td> <td valign="bottom" style="width:02.42%;padding:0pt;">   </td> <td colspan="3" valign="bottom" style="width:26.26%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> Six Months Ended June 30, </td> <td valign="bottom" style="width:01.78%;padding:0pt;">   </td> </tr> <tr> <td valign="bottom" style="width:40.88%;padding:0pt;">   </td> <td valign="bottom" style="width:02.42%;padding:0pt;">   </td> <td valign="bottom" style="width:11.92%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> 2015 </td> <td valign="bottom" style="width:02.42%;padding:0pt;">   </td> <td valign="bottom" style="width:11.92%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> 2014 </td> <td valign="bottom" style="width:02.42%;padding:0pt;">   </td> <td valign="bottom" style="width:11.92%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> 2015 </td> <td valign="bottom" style="width:02.42%;padding:0pt;">   </td> <td valign="bottom" style="width:11.92%;border-top:1pt none #D9D9D9 ;border-left:1pt none #D9D9D9 ;border-bottom:1pt solid #000000 ;border-right:1pt none #D9D9D9 ;padding:0pt;"> 2014 </td> <td valign="bottom" style="width:01.78%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:40.88%;background-color: #CCEEFF;padding:0pt;"> Risk-free interest rate </td> <td valign="bottom" style="width:02.42%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:11.92%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>1.89  </td> <td valign="bottom" style="width:02.42%;background-color: #CCEEFF;padding:0pt;"> % </td> <td valign="bottom" style="width:11.92%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>2.00  </td> <td valign="bottom" style="width:02.42%;background-color: #CCEEFF;padding:0pt;"> % </td> <td valign="bottom" style="width:11.92%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>1.81  </td> <td valign="bottom" style="width:02.42%;background-color: #CCEEFF;padding:0pt;"> % </td> <td valign="bottom" style="width:11.92%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>1.84  </td> <td valign="bottom" style="width:01.78%;background-color: #CCEEFF;padding:0pt;"> % </td> </tr> <tr> <td valign="top" style="width:40.88%;padding:0pt;"> Expected life in years </td> <td valign="bottom" style="width:02.42%;padding:0pt;">   </td> <td valign="bottom" style="width:11.92%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>6.23  </td> <td valign="bottom" style="width:02.42%;padding:0pt;">   </td> <td valign="bottom" style="width:11.92%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>6.25  </td> <td valign="bottom" style="width:02.42%;padding:0pt;">   </td> <td valign="bottom" style="width:11.92%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>6.24  </td> <td valign="bottom" style="width:02.42%;padding:0pt;">   </td> <td valign="bottom" style="width:11.92%;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>6.25  </td> <td valign="bottom" style="width:01.78%;padding:0pt;">   </td> </tr> <tr> <td valign="top" style="width:40.88%;background-color: #CCEEFF;padding:0pt;"> Volatility </td> <td valign="bottom" style="width:02.42%;background-color: #CCEEFF;padding:0pt;">   </td> <td valign="bottom" style="width:11.92%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>99  </td> <td valign="bottom" style="width:02.42%;background-color: #CCEEFF;padding:0pt;"> % </td> <td valign="bottom" style="width:11.92%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>104  </td> <td valign="bottom" style="width:02.42%;background-color: #CCEEFF;padding:0pt;"> % </td> <td valign="bottom" style="width:11.92%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>101  </td> <td valign="bottom" style="width:02.42%;background-color: #CCEEFF;padding:0pt;"> % </td> <td valign="bottom" style="width:11.92%;background-color: #CCEEFF;;font-family:Times New Roman;font-size:10pt;text-align:right;" nowrap="nowrap"><div style="float:left"></div>104  </td> <td valign="bottom" style="width:01.78%;background-color: #CCEEFF;padding:0pt;"> % </td> </tr> <tr> <td valign="top" style="width:40.88%;padding:0pt;"> Expected dividend yield </td> <td valign="bottom" style="width:02.42%;padding:0pt;">   </td> <td valign="bottom" style="width:11.92%;padding:0pt;"> — </td> <td valign="bottom" style="width:02.42%;padding:0pt;">   </td> <td valign="bottom" style="width:11.92%;padding:0pt;"> — </td> <td valign="bottom" style="width:02.42%;padding:0pt;">   </td> <td valign="bottom" style="width:11.92%;padding:0pt;"> — </td> <td valign="bottom" style="width:02.42%;padding:0pt;">   </td> <td valign="bottom" style="width:11.92%;padding:0pt;"> — </td> <td valign="bottom" style="width:01.78%;padding:0pt;">   </td> </tr> </table></div>   </div> </div>

22500000

9217000

9214000

9207000

4607000

10000

4099000

2553000

P4Y

500000

4.00

150000

2.40

744514

375000

3.65

2.67

19514

100000

4.10

P10Y

P6Y3M

P6Y2M27D

P6Y2M23D

1.04

1.01

0.99

0.0184

0.0200

0.0181

0.0189

10300000

11600000

8740968

8741000

5606833

6.36

1727807

2464146

5.01

3.39

1.91

1.87

8829343

9565682

6.17

5.32

5.44

2.38

1.75

65136000

68982000

5679685

25300000

7257142

3300000

23000000

44300000

89765982

94046278

120402163

132295909