<table>
<tbody><tr style="vertical-align: bottom">
    <td style="text-align: center; padding-left: 10pt; text-indent: -10pt">&nbsp;</td>
    <td>&nbsp;</td>
    <td colspan="2" style="text-align: center; border-bottom: Black 1pt solid">Weighted average exercise price</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td colspan="2" style="text-align: center; border-bottom: Black 1pt solid">Number of options</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td colspan="2" style="text-align: center; border-bottom: Black 1pt solid">Weighted average remaining contractual term (years)</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td colspan="2" style="text-align: center; border-bottom: Black 1pt solid">Aggregate intrinsic value</td>
    <td>&nbsp;</td></tr>
<tr style="vertical-align: bottom">
    <td style="text-align: center; padding-left: 10pt; text-indent: -10pt">&nbsp;</td>
    <td>&nbsp;</td>
    <td colspan="2" style="text-align: center">&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td colspan="2" style="text-align: center">&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td colspan="2" style="text-align: center">&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td colspan="2" style="text-align: center">&nbsp;</td>
    <td>&nbsp;</td></tr>
<tr style="vertical-align: bottom; background-color: rgb(234,249,232)">
    <td style="width: 36%; text-align: left; padding-left: 10pt; text-indent: -10pt">Balance at March 31, 2012</td>
    <td style="width: 3%">&nbsp;</td>
    <td style="width: 1%; text-align: left">$</td>
    <td style="width: 11%; text-align: right">0.60</td>
    <td style="width: 1%; text-align: left">&nbsp;</td>
    <td style="width: 3%">&nbsp;</td>
    <td style="width: 1%; text-align: left">&nbsp;</td>
    <td style="width: 11%; text-align: right">2,814,302</td>
    <td style="width: 1%; text-align: left">&nbsp;</td>
    <td style="width: 3%">&nbsp;</td>
    <td style="width: 1%; text-align: left">&nbsp;</td>
    <td style="width: 11%; text-align: right">8.06</td>
    <td style="width: 1%; text-align: left">&nbsp;</td>
    <td style="width: 3%">&nbsp;</td>
    <td style="width: 1%; text-align: left">$</td>
    <td style="width: 11%; text-align: right">1,238,293</td>
    <td style="width: 1%; text-align: left">&nbsp;</td></tr>
<tr style="vertical-align: bottom; background-color: White">
    <td style="text-align: left; padding-left: 10pt; text-indent: -10pt">Granted</td>
    <td>&nbsp;</td>
    <td style="text-align: left">&nbsp;</td>
    <td style="text-align: right">—</td>
    <td style="text-align: left">&nbsp;</td>
    <td>&nbsp;</td>
    <td style="text-align: left">&nbsp;</td>
    <td style="text-align: right">—</td>
    <td style="text-align: left">&nbsp;</td>
    <td>&nbsp;</td>
    <td style="text-align: left">&nbsp;</td>
    <td style="text-align: right">&nbsp;</td>
    <td style="text-align: left">&nbsp;</td>
    <td>&nbsp;</td>
    <td style="text-align: left">&nbsp;</td>
    <td style="text-align: right">&nbsp;</td>
    <td style="text-align: left">&nbsp;</td></tr>
<tr style="vertical-align: bottom; background-color: rgb(234,249,232)">
    <td style="text-align: left; padding-left: 10pt; text-indent: -10pt">Exercised</td>
    <td>&nbsp;</td>
    <td style="text-align: left">&nbsp;</td>
    <td style="text-align: right">—</td>
    <td style="text-align: left">&nbsp;</td>
    <td>&nbsp;</td>
    <td style="text-align: left">&nbsp;</td>
    <td style="text-align: right">—</td>
    <td style="text-align: left">&nbsp;</td>
    <td>&nbsp;</td>
    <td style="text-align: left">&nbsp;</td>
    <td style="text-align: right">&nbsp;</td>
    <td style="text-align: left">&nbsp;</td>
    <td>&nbsp;</td>
    <td style="text-align: left">&nbsp;</td>
    <td style="text-align: right">&nbsp;</td>
    <td style="text-align: left">&nbsp;</td></tr>
<tr style="vertical-align: bottom; background-color: White">
    <td style="text-align: left; padding-bottom: 1pt; padding-left: 10pt; text-indent: -10pt">Canceled</td>
    <td>&nbsp;</td>
    <td style="border-bottom: Black 1pt solid; text-align: left">$</td>
    <td style="border-bottom: Black 1pt solid; text-align: right">0.43</td>
    <td style="border-bottom: Black 1pt solid; text-align: left">&nbsp;</td>
    <td style="border-bottom: Black 1pt solid">&nbsp;</td>
    <td style="border-bottom: Black 1pt solid; text-align: left">&nbsp;</td>
    <td style="border-bottom: Black 1pt solid; text-align: right">(144,437</td>
    <td style="border-bottom: Black 1pt solid; text-align: left">)</td>
    <td style="border-bottom: Black 1pt solid">&nbsp;</td>
    <td style="border-bottom: Black 1pt solid; text-align: left">&nbsp;</td>
    <td style="border-bottom: Black 1pt solid; text-align: right">&nbsp;</td>
    <td style="border-bottom: Black 1pt solid; text-align: left">&nbsp;</td>
    <td style="border-bottom: Black 1pt solid">&nbsp;</td>
    <td style="border-bottom: Black 1pt solid; text-align: left">&nbsp;</td>
    <td style="border-bottom: Black 1pt solid; text-align: right">&nbsp;</td>
    <td style="text-align: left">&nbsp;</td></tr>
<tr style="vertical-align: bottom; background-color: rgb(234,249,232)">
    <td style="text-align: left; padding-bottom: 2.5pt; text-indent: -10pt; padding-left: 10pt">Balance at December 31, 2012 (vested and expected to vest)</td>
    <td>&nbsp;</td>
    <td style="border-bottom: Black 2.5pt double; text-align: left">$</td>
    <td style="border-bottom: Black 2.5pt double; text-align: right">0.48</td>
    <td style="border-bottom: Black 2.5pt double; text-align: left">&nbsp;</td>
    <td style="border-bottom: Black 2.5pt double">&nbsp;</td>
    <td style="border-bottom: Black 2.5pt double; text-align: left">&nbsp;</td>
    <td style="border-bottom: Black 2.5pt double; text-align: right">2,669,865</td>
    <td style="border-bottom: Black 2.5pt double; text-align: left">&nbsp;</td>
    <td style="border-bottom: Black 2.5pt double">&nbsp;</td>
    <td style="border-bottom: Black 2.5pt double; text-align: left">&nbsp;</td>
    <td style="border-bottom: Black 2.5pt double; text-align: right">7.31</td>
    <td style="border-bottom: Black 2.5pt double; text-align: left">&nbsp;</td>
    <td style="border-bottom: Black 2.5pt double">&nbsp;</td>
    <td style="border-bottom: Black 2.5pt double; text-align: left">$</td>
    <td style="border-bottom: Black 2.5pt double; text-align: right">1,388,330</td>
    <td style="text-align: left">&nbsp;</td></tr>
<tr style="vertical-align: bottom; background-color: White">
    <td style="text-align: left; padding-bottom: 2.5pt; text-indent: -10pt; padding-left: 10pt">Exercisable at December 31, 2012</td>
    <td>&nbsp;</td>
    <td style="border-bottom: Black 2.5pt double; text-align: left">$</td>
    <td style="border-bottom: Black 2.5pt double; text-align: right">0.53</td>
    <td style="border-bottom: Black 2.5pt double; text-align: left">&nbsp;</td>
    <td style="border-bottom: Black 2.5pt double">&nbsp;</td>
    <td style="border-bottom: Black 2.5pt double; text-align: left">&nbsp;</td>
    <td style="border-bottom: Black 2.5pt double; text-align: right">1,442,153</td>
    <td style="border-bottom: Black 2.5pt double; text-align: left">&nbsp;</td>
    <td style="border-bottom: Black 2.5pt double">&nbsp;</td>
    <td style="border-bottom: Black 2.5pt double; text-align: left">&nbsp;</td>
    <td style="border-bottom: Black 2.5pt double; text-align: right">7.40</td>
    <td style="border-bottom: Black 2.5pt double; text-align: left">&nbsp;</td>
    <td style="border-bottom: Black 2.5pt double">&nbsp;</td>
    <td style="border-bottom: Black 2.5pt double; text-align: left">$</td>
    <td style="border-bottom: Black 2.5pt double; text-align: right">677,812</td>
    <td style="text-align: left">&nbsp;</td></tr>
</tbody></table>
<table>
<tbody><tr>
<td> </td>
<td> </td>
<td>Weighted average exercise price</td>
<td> </td>
<td> </td>
<td>Number of options</td>
<td> </td>
<td> </td>
<td>Weighted average remaining contractual term (years)</td>
<td> </td>
<td> </td>
<td>Aggregate intrinsic value</td>
<td> </td></tr>
<tr>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td></tr>
<tr>
<td>Balance at March 31, 2012</td>
<td> </td>
<td>$</td>
<td>0.60</td>
<td> </td>
<td> </td>
<td> </td>
<td>2,814,302</td>
<td> </td>
<td> </td>
<td> </td>
<td>8.06</td>
<td> </td>
<td> </td>
<td>$</td>
<td>1,238,293</td>
<td> </td></tr>
<tr>
<td>Granted</td>
<td> </td>
<td> </td>
<td>—</td>
<td> </td>
<td> </td>
<td> </td>
<td>—</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td></tr>
<tr>
<td>Exercised</td>
<td> </td>
<td> </td>
<td>—</td>
<td> </td>
<td> </td>
<td> </td>
<td>—</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td></tr>
<tr>
<td>Canceled</td>
<td> </td>
<td>$</td>
<td>0.43</td>
<td> </td>
<td> </td>
<td> </td>
<td>(144,437</td>
<td>)</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td></tr>
<tr>
<td>Balance at December 31, 2012 (vested and expected to vest)</td>
<td> </td>
<td>$</td>
<td>0.48</td>
<td> </td>
<td> </td>
<td> </td>
<td>2,669,865</td>
<td> </td>
<td> </td>
<td> </td>
<td>7.31</td>
<td> </td>
<td> </td>
<td>$</td>
<td>1,388,330</td>
<td> </td></tr>
<tr>
<td>Exercisable at December 31, 2012</td>
<td> </td>
<td>$</td>
<td>0.53</td>
<td> </td>
<td> </td>
<td> </td>
<td>1,442,153</td>
<td> </td>
<td> </td>
<td> </td>
<td>7.40</td>
<td> </td>
<td> </td>
<td>$</td>
<td>677,812</td>
<td> </td></tr>
</tbody></table>