<table>
<thead>
<tr>
<th>报告人姓名</th>
<th>关系</th>
<th>类型</th>
<th>金额</th>
<th>SEC 文件</th>
</tr>
</thead>
<tbody>
<tr>
<td>Arnon Rosenthal</td>
<td>首席执行官，10% 股东</td>
<td>卖出</td>
<td>$116,826</td>
<td>Form 4</td>
</tr>
<tr>
<td>Sara Kenkare-Mitra</td>
<td>总裁兼研发负责人，10% 股东</td>
<td>卖出</td>
<td>$46,672</td>
<td>Form 4</td>
</tr>
<tr>
<td>Neil Lindsay Berkley</td>
<td>首席商务官兼临时首席财务官，10% 股东</td>
<td>卖出</td>
<td>$41,717</td>
<td>Form 4</td>
</tr>
</tbody>
</table>
<p>Alector 的首席执行官及 10% 股东 Arnon Rosenthal 于 2025 年 12 月 3 日以每股加权平均价格 $1.1196 卖出 104,347 股普通股，总金额为 $116,826，以满足与限制性股票单位归属相关的税务义务。交易后，Rosenthal 直接持有 2,420,040 股，间接通过多个家庭信托持有 3,930,375 股。</p>
<p>Alector 的总裁兼研发负责人 Sara Kenkare-Mitra 及 10% 股东，于同一天卖出 41,687 股普通股，以满足与 RSU 归属相关的税务义务。这些股票以每股加权平均价格 $1.1196 卖出，总金额未披露。交易后，Kenkare-Mitra 直接持有 501,652 股 Alector 的股票。</p>
<p>Alector 的首席商务官兼临时首席财务官 Neil Lindsay 及 10% 股东和公司董事，于 2025 年 12 月 3 日卖出 37,261 股普通股，以满足与限制性股票单位归属相关的税务义务。这些股票以每股加权平均价格 $1.1196 卖出，总金额未披露。交易后，Lindsay 直接持有 374,309 股 Alector 的普通股。</p>

ALEC

<p>Alector 的高管，包括首席执行官 Arnon Rosenthal、总裁 Sara Kenkare-Mitra 和首席商务官 Neil Lindsay，出售了股票以满足与限制性股票单位归属相关的税务义务。Rosenthal 出售了价值 116,826 美元的股票，Kenkare-Mitra 出售了价值 46,672 美元的股票，Lindsay 出售了价值 41,717 美元的股票。在交易之后，他们仍然持有公司大量股份</p>

<table>
<thead>
<tr>
<th>Reporter Name</th>
<th>Relationship</th>
<th>Type</th>
<th>Amount</th>
<th>SEC Filing</th>
</tr>
</thead>
<tbody>
<tr>
<td>Rosenthal Arnon</td>
<td>Chief Executive Officer, 10% Owner</td>
<td>Sell</td>
<td>$116,826</td>
<td>Form 4</td>
</tr>
<tr>
<td>Kenkare-Mitra Sara</td>
<td>President and Head of R&amp;D, 10% Owner</td>
<td>Sell</td>
<td>$46,672</td>
<td>Form 4</td>
</tr>
<tr>
<td>Berkley Neil Lindsay</td>
<td>Chief Bus Ofcr &amp; Interim CFO, 10% Owner</td>
<td>Sell</td>
<td>$41,717</td>
<td>Form 4</td>
</tr>
</tbody>
</table>
<div class="lb-trans"><table>
<thead>
<tr>
<th>报告人姓名</th>
<th>关系</th>
<th>类型</th>
<th>金额</th>
<th>SEC 文件</th>
</tr>
</thead>
<tbody>
<tr>
<td>Arnon Rosenthal</td>
<td>首席执行官，10% 股东</td>
<td>卖出</td>
<td>$116,826</td>
<td>Form 4</td>
</tr>
<tr>
<td>Sara Kenkare-Mitra</td>
<td>总裁兼研发负责人，10% 股东</td>
<td>卖出</td>
<td>$46,672</td>
<td>Form 4</td>
</tr>
<tr>
<td>Neil Lindsay Berkley</td>
<td>首席商务官兼临时首席财务官，10% 股东</td>
<td>卖出</td>
<td>$41,717</td>
<td>Form 4</td>
</tr>
</tbody>
</table>
</div><p>Alector's Chief Executive Officer and 10% owner, Arnon Rosenthal, sold 104,347 shares of common stock on December 3, 2025, at a weighted average price of $1.1196 per share, totaling $116,826, to satisfy tax obligations related to the vesting of restricted stock units. Following the transaction, Rosenthal directly owns 2,420,040 shares and indirectly owns 3,930,375 shares through various family trusts.</p>
<div class="lb-trans"><p>Alector 的首席执行官及 10% 股东 Arnon Rosenthal 于 2025 年 12 月 3 日以每股加权平均价格 $1.1196 卖出 104,347 股普通股，总金额为 $116,826，以满足与限制性股票单位归属相关的税务义务。交易后，Rosenthal 直接持有 2,420,040 股，间接通过多个家庭信托持有 3,930,375 股。</p>
</div><p>Sara Kenkare-Mitra, President and Head of R&amp;D at Alector and a 10% owner, sold 41,687 shares of common stock on the same date to meet tax obligations related to RSU vesting. The shares were sold at a weighted average price of $1.1196, totaling an undisclosed amount. Following the sale, Kenkare-Mitra directly owns 501,652 shares of Alector.</p>
<div class="lb-trans"><p>Alector 的总裁兼研发负责人 Sara Kenkare-Mitra 及 10% 股东，于同一天卖出 41,687 股普通股，以满足与 RSU 归属相关的税务义务。这些股票以每股加权平均价格 $1.1196 卖出，总金额未披露。交易后，Kenkare-Mitra 直接持有 501,652 股 Alector 的股票。</p>
</div><p>Neil Lindsay, Chief Business Officer and Interim CFO of Alector, and a 10% owner and director of the company, sold 37,261 shares of common stock on December 3, 2025, to satisfy tax obligations related to the vesting of restricted stock units. The shares were sold at a weighted average price of $1.1196, totaling an undisclosed amount. Following the sale, Lindsay directly owns 374,309 shares of Alector's common stock.</p>
<div class="lb-trans"><p>Alector 的首席商务官兼临时首席财务官 Neil Lindsay 及 10% 股东和公司董事，于 2025 年 12 月 3 日卖出 37,261 股普通股，以满足与限制性股票单位归属相关的税务义务。这些股票以每股加权平均价格 $1.1196 卖出，总金额未披露。交易后，Lindsay 直接持有 374,309 股 Alector 的普通股。</p>
</div>

Alector 公司的高管出售股票以履行税务义务