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<title>Legal Insider Trading Data | Free and Professional Subscription Services | Insider Insights</title>
<link href="http://www.insiderinsights.com/news/company/qsi" ></link>
<id>urn:uuid:b14b640f-ecd9-9cf3-bf6f-ce03b98835d1</id>
<updated>2026-10-23T07:11:12-04:00</updated>
<author>Jonathan Moreland</author>
<subtitle>Profit from legal insider trading. InsiderInsights.com provides free insider trading data tools and resources, and professional grade subscription based real time Form 4 data, analysis and services</subtitle>
<entry>
<title>QSI: HAWKINS JEFFREY ALAN (PR,CEO,DIR) Sold (S) 29,852 Shares of QUANTUM SI INC for $0.76 on 9/21-9/22</title>
<link href="http://www.insiderinsights.com/company/qsi/quantum-si-inc/id-6473033" ></link>
<id>urn:uuid:b6f6e421-ffa6-1ece-d05e-7369d610c166</id>
<updated>2026-09-23T19:51:48-04:00</updated>
<summary type="html" ><![CDATA[QUANTUM SI INC (QSI). Recent Price: $1.12. Mkt Cap:245.2mm. 10D Vol: 12.2mm]]></summary>
</entry>
<entry>
<title>QSI: KEYES JEFFRY R (CFO) Sold (S) 7,665 Shares of QUANTUM SI INC for $0.76 on 9/21-9/22</title>
<link href="http://www.insiderinsights.com/company/qsi/quantum-si-inc/id-6473032" ></link>
<id>urn:uuid:5bd59887-2471-c65c-1ffe-e525c849c7c4</id>
<updated>2026-09-23T19:45:56-04:00</updated>
<summary type="html" ><![CDATA[QUANTUM SI INC (QSI). Recent Price: $1.12. Mkt Cap:245.2mm. 10D Vol: 12.2mm]]></summary>
</entry>
<entry>
<title>QSI: LAPOINTE CHRISTIAN (GC,SEC) Sold (S) 14,516 Shares of QUANTUM SI INC for $0.76 on 9/21-9/22</title>
<link href="http://www.insiderinsights.com/company/qsi/quantum-si-inc/id-6473029" ></link>
<id>urn:uuid:87e93652-db16-d5ad-2e10-c5c2f3420520</id>
<updated>2026-09-23T19:40:28-04:00</updated>
<summary type="html" ><![CDATA[QUANTUM SI INC (QSI). Recent Price: $1.12. Mkt Cap:245.2mm. 10D Vol: 12.2mm]]></summary>
</entry>
<entry>
<title>QSI: LAPOINTE CHRISTIAN (GC,SEC) Sold (S) 15,588 Shares of QUANTUM SI INC for $0.90 on 6/22-6/23</title>
<link href="http://www.insiderinsights.com/company/qsi/quantum-si-inc/id-6432196" ></link>
<id>urn:uuid:89e6ed31-0d97-48ad-21dc-9500075a72f5</id>
<updated>2026-06-24T20:31:31-04:00</updated>
<summary type="html" ><![CDATA[QUANTUM SI INC (QSI). Recent Price: $1.12. Mkt Cap:245.2mm. 10D Vol: 12.2mm]]></summary>
</entry>
<entry>
<title>QSI: KEYES JEFFRY R (CFO) Sold (S) 8,233 Shares of QUANTUM SI INC for $0.90 on 6/22-6/23</title>
<link href="http://www.insiderinsights.com/company/qsi/quantum-si-inc/id-6432191" ></link>
<id>urn:uuid:a04b27b0-1bf2-25d8-25f6-684382c4a7ad</id>
<updated>2026-06-24T20:23:00-04:00</updated>
<summary type="html" ><![CDATA[QUANTUM SI INC (QSI). Recent Price: $1.12. Mkt Cap:245.2mm. 10D Vol: 12.2mm]]></summary>
</entry>
<entry>
<title>QSI: VIECELI JOHN S (O) Sold (S) 30,223 Shares of QUANTUM SI INC for $0.90 on 6/22-6/23</title>
<link href="http://www.insiderinsights.com/company/qsi/quantum-si-inc/id-6432189" ></link>
<id>urn:uuid:6ef0b3a8-04dd-1139-17f9-eef3861e2f9a</id>
<updated>2026-06-24T20:17:00-04:00</updated>
<summary type="html" ><![CDATA[QUANTUM SI INC (QSI). Recent Price: $1.12. Mkt Cap:245.2mm. 10D Vol: 12.2mm]]></summary>
</entry>
<entry>
<title>QSI: HAWKINS JEFFREY ALAN (PR,CEO,DIR) Sold (S) 22,621 Shares of QUANTUM SI INC for $0.90 on 6/22-6/23</title>
<link href="http://www.insiderinsights.com/company/qsi/quantum-si-inc/id-6432188" ></link>
<id>urn:uuid:cee6e2c0-ca0c-96d6-d794-8aacd935bc51</id>
<updated>2026-06-24T20:12:13-04:00</updated>
<summary type="html" ><![CDATA[QUANTUM SI INC (QSI). Recent Price: $1.12. Mkt Cap:245.2mm. 10D Vol: 12.2mm]]></summary>
</entry>
<entry>
<title>QSI: KEYES JEFFRY R (CFO) Sold (S) 74,763 Shares of QUANTUM SI INC for $1.00 on 4/20-4/21</title>
<link href="http://www.insiderinsights.com/company/qsi/quantum-si-inc/id-6389608" ></link>
<id>urn:uuid:ce668344-c2c6-7122-1734-370b91dd57db</id>
<updated>2026-04-22T17:09:09-04:00</updated>
<summary type="html" ><![CDATA[QUANTUM SI INC (QSI). Recent Price: $1.12. Mkt Cap:245.2mm. 10D Vol: 12.2mm]]></summary>
</entry>
<entry>
<title>QSI: HAWKINS JEFFREY ALAN (PR,CEO,DIR) Sold (S) 167,424 Shares of QUANTUM SI INC for $1.00 on 4/20-4/21</title>
<link href="http://www.insiderinsights.com/company/qsi/quantum-si-inc/id-6389600" ></link>
<id>urn:uuid:a0ec16ba-a481-04d1-2d82-60bbffa3b115</id>
<updated>2026-04-22T17:02:10-04:00</updated>
<summary type="html" ><![CDATA[QUANTUM SI INC (QSI). Recent Price: $1.12. Mkt Cap:245.2mm. 10D Vol: 12.2mm]]></summary>
</entry>
<entry>
<title>QSI: KEYES JEFFRY R (CFO) Sold (S) 8,655 Shares of QUANTUM SI INC for $0.83 on 3/20-3/23</title>
<link href="http://www.insiderinsights.com/company/qsi/quantum-si-inc/id-6372984" ></link>
<id>urn:uuid:0e4064db-83d3-a246-e05f-6f9394a4c235</id>
<updated>2026-03-24T19:02:16-04:00</updated>
<summary type="html" ><![CDATA[QUANTUM SI INC (QSI). Recent Price: $1.12. Mkt Cap:245.2mm. 10D Vol: 12.2mm]]></summary>
</entry>
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