<p>RNS 编号：7473Q Costain Group PLC2026 年 1 月 28 日</p>
<p>TR-1：主要持股通知的标准表格</p>
<p>1. 发行人详情</p>
<p>ISIN</p>
<p>GB00B64NSP76</p>
<p>发行人名称</p>
<p>COSTAIN GROUP PLC</p>
<p>英国或非英国发行人</p>
<p>英国</p>
<p>2. 通知原因</p>
<p>投票权的收购或处置</p>
<p>3. 受通知义务的人的详细信息</p>
<p>姓名</p>
<p>瑞银集团 - 投资银行与全球财富管理</p>
<p>注册办公室所在城市（如适用）</p>
<p>伦敦</p>
<p>注册办公室所在国家（如适用）</p>
<p>英国</p>
<p>4. 股东的详细信息</p>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>姓名</td>
<td>瑞银集团</td>
</tr>
<tr>
<td>注册办公室所在城市</td>
<td>伦敦</td>
</tr>
<tr>
<td>注册办公室所在国家</td>
<td>英国</td>
</tr>
</tbody>
</table>
<p>5. 超过或达到阈值的日期</p>
<p>2026 年 1 月 26 日</p>
<p>6. 发行人通知的日期</p>
<p>2026 年 1 月 28 日</p>
<p>7. 受通知义务的人的总持仓</p>
<table>
<thead>
<tr>
<th></th>
<th></th>
<th></th>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td></td>
<td>附加于股份的投票权的百分比（总计 8.A）</td>
<td>通过金融工具的投票权的百分比（总计 8.B 1 + 8.B 2）</td>
<td>两者的总和百分比（8.A + 8.B）</td>
<td>发行人持有的投票权总数</td>
</tr>
<tr>
<td>超过或达到阈值时的情况</td>
<td>7.933702</td>
<td>0.000000</td>
<td>7.933702</td>
<td>21160366</td>
</tr>
<tr>
<td>之前通知的持仓（如适用）</td>
<td>8.014094</td>
<td>0.000000</td>
<td>8.014094</td>
<td></td>
</tr>
</tbody>
</table>
<p>8. 超过或达到阈值时的通知详情</p>
<p>8A. 附加于股份的投票权</p>
<table>
<thead>
<tr>
<th></th>
<th></th>
<th></th>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>股份类别/类型 ISIN 代码（如可能）</td>
<td>直接投票权数量（DTR5.1）</td>
<td>间接投票权数量（DTR5.2.1）</td>
<td>直接投票权的百分比（DTR5.1）</td>
<td>间接投票权的百分比（DTR5.2.1）</td>
</tr>
<tr>
<td>GB00B64NSP76</td>
<td></td>
<td>21160366</td>
<td></td>
<td>7.933702</td>
</tr>
<tr>
<td>小计 8.A</td>
<td>21160366</td>
<td>7.933702%</td>
<td></td>
<td></td>
</tr>
</tbody>
</table>
<p>8B1. 根据 (DTR5.3.1R.(1) (a)) 的金融工具</p>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>金融工具类型</td>
<td>小计 8.B1</td>
</tr>
<tr>
<td>到期日期</td>
<td></td>
</tr>
<tr>
<td>行使/转换期限</td>
<td></td>
</tr>
<tr>
<td>如果行使/转换该工具可获得的投票权数量</td>
<td></td>
</tr>
<tr>
<td>投票权的百分比</td>
<td></td>
</tr>
</tbody>
</table>
<p>8B2. 根据 (DTR5.3.1R.(1) (b)) 的具有类似经济效果的金融工具</p>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>金融工具类型</td>
<td>小计 8.B2</td>
</tr>
<tr>
<td>到期日期</td>
<td></td>
</tr>
<tr>
<td>行使/转换期限</td>
<td></td>
</tr>
<tr>
<td>实物或现金结算</td>
<td></td>
</tr>
<tr>
<td>投票权数量</td>
<td></td>
</tr>
<tr>
<td>投票权的百分比</td>
<td></td>
</tr>
</tbody>
</table>
<p>9. 关于受通知义务的人的信息</p>
<p>2. 通过最终控制自然人或法律实体有效持有投票权和/或金融工具的受控企业的完整链条（如有必要请添加额外行）</p>
<table>
<thead>
<tr>
<th></th>
<th></th>
<th></th>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>最终控制人</td>
<td>受控企业名称</td>
<td>如果等于或高于可通知阈值的投票权百分比</td>
<td>如果等于或高于可通知阈值的通过金融工具的投票权百分比</td>
<td>如果等于或高于可通知阈值的两者总和</td>
</tr>
<tr>
<td>瑞银集团（链条 1）</td>
<td></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr>
<td>瑞银集团（链条 1）</td>
<td>瑞银集团</td>
<td>7.933702</td>
<td></td>
<td>7.933702%</td>
</tr>
</tbody>
</table>
<p>10. 在代理投票的情况下</p>
<p>代理持有人姓名</p>
<p>持有的投票权数量和百分比</p>
<p>持有投票权的截止日期</p>
<p>11. 附加信息</p>
<p>12. 完成日期</p>
<p>2026 年 1 月 28 日</p>
<p>13. 完成地点</p>
<p>瑞士苏黎世</p>
<p>此信息由 RNS 提供，伦敦证券交易所的新闻服务。RNS 获得金融行为监管局的批准，作为英国的主要信息提供者。有关使用和分发此信息的条款和条件可能适用。如需更多信息，请联系 rns@lseg.com 或访问 www.rns.com。</p>
<p>RNS 可能会使用您的 IP 地址以确认遵守条款和条件，分析您与本通信中包含的信息的互动，并以匿名方式与他人分享此分析，作为我们商业服务的一部分。如需有关 RNS 和伦敦证券交易所如何使用您提供的个人数据的更多信息，请参见我们的隐私政策。结束 HOLPPUMAGUPQGUR</p>

COST

瑞银集团

<p>Costain Group PLC 宣布瑞银集团（UBS Group AG）对其主要持股的通知，瑞银集团截至 2026 年 1 月 26 日已获得公司 7.93% 的投票权。该通知于 2026 年 1 月 28 日发布，显示瑞银集团总共持有 2,116,036 股。这一收购反映出其之前持股 8.01% 的变化。该信息由伦敦证券交易所的新闻服务 RNS 提供</p>

<p>RNS Number : 7473Q Costain Group PLC 28 January 2026</p>
<div class="lb-trans"><p>RNS 编号：7473Q Costain Group PLC2026 年 1 月 28 日</p>
</div><p>TR-1: Standard form for notification of major holdings</p>
<div class="lb-trans"><p>TR-1：主要持股通知的标准表格</p>
</div><p>1. Issuer Details</p>
<div class="lb-trans"><p>1. 发行人详情</p>
</div><p>ISIN</p>
<div class="lb-trans"><p>ISIN</p>
</div><p>GB00B64NSP76</p>
<div class="lb-trans"><p>GB00B64NSP76</p>
</div><p>Issuer Name</p>
<div class="lb-trans"><p>发行人名称</p>
</div><p>COSTAIN GROUP PLC</p>
<div class="lb-trans"><p>COSTAIN GROUP PLC</p>
</div><p>UK or Non-UK Issuer</p>
<div class="lb-trans"><p>英国或非英国发行人</p>
</div><p>UK</p>
<div class="lb-trans"><p>英国</p>
</div><p>2. Reason for Notification</p>
<div class="lb-trans"><p>2. 通知原因</p>
</div><p>An acquisition or disposal of voting rights</p>
<div class="lb-trans"><p>投票权的收购或处置</p>
</div><p>3. Details of person subject to the notification obligation</p>
<div class="lb-trans"><p>3. 受通知义务的人的详细信息</p>
</div><p>Name</p>
<div class="lb-trans"><p>姓名</p>
</div><p>UBS Group AG-Investment Bank &amp; Global Wealth Management</p>
<div class="lb-trans"><p>瑞银集团 - 投资银行与全球财富管理</p>
</div><p>City of registered office (if applicable)</p>
<div class="lb-trans"><p>注册办公室所在城市（如适用）</p>
</div><p>London</p>
<div class="lb-trans"><p>伦敦</p>
</div><p>Country of registered office (if applicable)</p>
<div class="lb-trans"><p>注册办公室所在国家（如适用）</p>
</div><p>United Kingdom</p>
<div class="lb-trans"><p>英国</p>
</div><p>4. Details of the shareholder</p>
<div class="lb-trans"><p>4. 股东的详细信息</p>
</div><table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Name</td>
<td>UBS AG</td>
</tr>
<tr>
<td>City of registered office</td>
<td>London</td>
</tr>
<tr>
<td>Country of registered office</td>
<td>United Kingdom</td>
</tr>
</tbody>
</table>
<div class="lb-trans"><table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>姓名</td>
<td>瑞银集团</td>
</tr>
<tr>
<td>注册办公室所在城市</td>
<td>伦敦</td>
</tr>
<tr>
<td>注册办公室所在国家</td>
<td>英国</td>
</tr>
</tbody>
</table>
</div><p>5. Date on which the threshold was crossed or reached</p>
<div class="lb-trans"><p>5. 超过或达到阈值的日期</p>
</div><p>26-Jan-2026</p>
<div class="lb-trans"><p>2026 年 1 月 26 日</p>
</div><p>6. Date on which Issuer notified</p>
<div class="lb-trans"><p>6. 发行人通知的日期</p>
</div><p>28-Jan-2026</p>
<div class="lb-trans"><p>2026 年 1 月 28 日</p>
</div><p>7. Total positions of person(s) subject to the notification obligation</p>
<div class="lb-trans"><p>7. 受通知义务的人的总持仓</p>
</div><table>
<thead>
<tr>
<th></th>
<th></th>
<th></th>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td></td>
<td>% of voting rights attached to shares (total of 8.A)</td>
<td>% of voting rights through financial instruments (total of 8.B 1 + 8.B 2)</td>
<td>Total of both in % (8.A + 8.B)</td>
<td>Total number of voting rights held in issuer</td>
</tr>
<tr>
<td>Resulting situation on the date on which threshold was crossed or reached</td>
<td>7.933702</td>
<td>0.000000</td>
<td>7.933702</td>
<td>21160366</td>
</tr>
<tr>
<td>Position of previous notification (if applicable)</td>
<td>8.014094</td>
<td>0.000000</td>
<td>8.014094</td>
<td></td>
</tr>
</tbody>
</table>
<div class="lb-trans"><table>
<thead>
<tr>
<th></th>
<th></th>
<th></th>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td></td>
<td>附加于股份的投票权的百分比（总计 8.A）</td>
<td>通过金融工具的投票权的百分比（总计 8.B 1 + 8.B 2）</td>
<td>两者的总和百分比（8.A + 8.B）</td>
<td>发行人持有的投票权总数</td>
</tr>
<tr>
<td>超过或达到阈值时的情况</td>
<td>7.933702</td>
<td>0.000000</td>
<td>7.933702</td>
<td>21160366</td>
</tr>
<tr>
<td>之前通知的持仓（如适用）</td>
<td>8.014094</td>
<td>0.000000</td>
<td>8.014094</td>
<td></td>
</tr>
</tbody>
</table>
</div><p>8. Notified details of the resulting situation on the date on which the threshold was crossed or reached</p>
<div class="lb-trans"><p>8. 超过或达到阈值时的通知详情</p>
</div><p>8A. Voting rights attached to shares</p>
<div class="lb-trans"><p>8A. 附加于股份的投票权</p>
</div><table>
<thead>
<tr>
<th></th>
<th></th>
<th></th>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Class/Type of shares ISIN code(if possible)</td>
<td>Number of direct voting rights (DTR5.1)</td>
<td>Number of indirect voting rights (DTR5.2.1)</td>
<td>% of direct voting rights (DTR5.1)</td>
<td>% of indirect voting rights (DTR5.2.1)</td>
</tr>
<tr>
<td>GB00B64NSP76</td>
<td></td>
<td>21160366</td>
<td></td>
<td>7.933702</td>
</tr>
<tr>
<td>Sub Total 8.A</td>
<td>21160366</td>
<td>7.933702%</td>
<td></td>
<td></td>
</tr>
</tbody>
</table>
<div class="lb-trans"><table>
<thead>
<tr>
<th></th>
<th></th>
<th></th>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>股份类别/类型 ISIN 代码（如可能）</td>
<td>直接投票权数量（DTR5.1）</td>
<td>间接投票权数量（DTR5.2.1）</td>
<td>直接投票权的百分比（DTR5.1）</td>
<td>间接投票权的百分比（DTR5.2.1）</td>
</tr>
<tr>
<td>GB00B64NSP76</td>
<td></td>
<td>21160366</td>
<td></td>
<td>7.933702</td>
</tr>
<tr>
<td>小计 8.A</td>
<td>21160366</td>
<td>7.933702%</td>
<td></td>
<td></td>
</tr>
</tbody>
</table>
</div><p>8B1. Financial Instruments according to (DTR5.3.1R.(1) (a))</p>
<div class="lb-trans"><p>8B1. 根据 (DTR5.3.1R.(1) (a)) 的金融工具</p>
</div><table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Type of financial instrument</td>
<td>Sub Total 8.B1</td>
</tr>
<tr>
<td>Expiration date</td>
<td></td>
</tr>
<tr>
<td>Exercise/conversion period</td>
<td></td>
</tr>
<tr>
<td>Number of voting rights that may be acquired if the instrument is exercised/converted</td>
<td></td>
</tr>
<tr>
<td>% of voting rights</td>
<td></td>
</tr>
</tbody>
</table>
<div class="lb-trans"><table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>金融工具类型</td>
<td>小计 8.B1</td>
</tr>
<tr>
<td>到期日期</td>
<td></td>
</tr>
<tr>
<td>行使/转换期限</td>
<td></td>
</tr>
<tr>
<td>如果行使/转换该工具可获得的投票权数量</td>
<td></td>
</tr>
<tr>
<td>投票权的百分比</td>
<td></td>
</tr>
</tbody>
</table>
</div><p>8B2. Financial Instruments with similar economic effect according to (DTR5.3.1R.(1) (b))</p>
<div class="lb-trans"><p>8B2. 根据 (DTR5.3.1R.(1) (b)) 的具有类似经济效果的金融工具</p>
</div><table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Type of financial instrument</td>
<td>Sub Total 8.B2</td>
</tr>
<tr>
<td>Expiration date</td>
<td></td>
</tr>
<tr>
<td>Exercise/conversion period</td>
<td></td>
</tr>
<tr>
<td>Physical or cash settlement</td>
<td></td>
</tr>
<tr>
<td>Number of voting rights</td>
<td></td>
</tr>
<tr>
<td>% of voting rights</td>
<td></td>
</tr>
</tbody>
</table>
<div class="lb-trans"><table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>金融工具类型</td>
<td>小计 8.B2</td>
</tr>
<tr>
<td>到期日期</td>
<td></td>
</tr>
<tr>
<td>行使/转换期限</td>
<td></td>
</tr>
<tr>
<td>实物或现金结算</td>
<td></td>
</tr>
<tr>
<td>投票权数量</td>
<td></td>
</tr>
<tr>
<td>投票权的百分比</td>
<td></td>
</tr>
</tbody>
</table>
</div><p>9. Information in relation to the person subject to the notification obligation</p>
<div class="lb-trans"><p>9. 关于受通知义务的人的信息</p>
</div><p>2. Full chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held starting with the ultimate controlling natural person or legal entities (please add additional rows as necessary)</p>
<div class="lb-trans"><p>2. 通过最终控制自然人或法律实体有效持有投票权和/或金融工具的受控企业的完整链条（如有必要请添加额外行）</p>
</div><table>
<thead>
<tr>
<th></th>
<th></th>
<th></th>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Ultimate controlling person</td>
<td>Name of controlled undertaking</td>
<td>% of voting rights if it equals or is higher than the notifiable threshold</td>
<td>% of voting rights through financial instruments if it equals or is higher than the notifiable threshold</td>
<td>Total of both if it equals or is higher than the notifiable threshold</td>
</tr>
<tr>
<td>UBS Group AG (Chain 1)</td>
<td></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr>
<td>UBS Group AG (Chain 1)</td>
<td>UBS AG</td>
<td>7.933702</td>
<td></td>
<td>7.933702%</td>
</tr>
</tbody>
</table>
<div class="lb-trans"><table>
<thead>
<tr>
<th></th>
<th></th>
<th></th>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>最终控制人</td>
<td>受控企业名称</td>
<td>如果等于或高于可通知阈值的投票权百分比</td>
<td>如果等于或高于可通知阈值的通过金融工具的投票权百分比</td>
<td>如果等于或高于可通知阈值的两者总和</td>
</tr>
<tr>
<td>瑞银集团（链条 1）</td>
<td></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr>
<td>瑞银集团（链条 1）</td>
<td>瑞银集团</td>
<td>7.933702</td>
<td></td>
<td>7.933702%</td>
</tr>
</tbody>
</table>
</div><p>10. In case of proxy voting</p>
<div class="lb-trans"><p>10. 在代理投票的情况下</p>
</div><p>Name of the proxy holder</p>
<div class="lb-trans"><p>代理持有人姓名</p>
</div><p>The number and % of voting rights held</p>
<div class="lb-trans"><p>持有的投票权数量和百分比</p>
</div><p>The date until which the voting rights will be held</p>
<div class="lb-trans"><p>持有投票权的截止日期</p>
</div><p>11. Additional Information</p>
<div class="lb-trans"><p>11. 附加信息</p>
</div><p>12. Date of Completion</p>
<div class="lb-trans"><p>12. 完成日期</p>
</div><p>28-Jan-2026</p>
<div class="lb-trans"><p>2026 年 1 月 28 日</p>
</div><p>13. Place Of Completion</p>
<div class="lb-trans"><p>13. 完成地点</p>
</div><p>Zurich, Switzerland</p>
<div class="lb-trans"><p>瑞士苏黎世</p>
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