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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>2026-05-12T21:45:54-04:00</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: 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: $0.91. Mkt Cap:197.4mm. 10D Vol: 5.9mm]]></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: $0.91. Mkt Cap:197.4mm. 10D Vol: 5.9mm]]></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: $0.91. Mkt Cap:197.4mm. 10D Vol: 5.9mm]]></summary>
</entry>
<entry>
<title>QSI: LAPOINTE CHRISTIAN (GC,SEC) Sold (S) 11,959 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-6372976" ></link>
<id>urn:uuid:f7793824-8844-f658-67d4-2ee63ee28082</id>
<updated>2026-03-24T18:55:40-04:00</updated>
<summary type="html" ><![CDATA[QUANTUM SI INC (QSI). Recent Price: $0.91. Mkt Cap:197.4mm. 10D Vol: 5.9mm]]></summary>
</entry>
<entry>
<title>QSI: VIECELI JOHN S (O) Sold (S) 21,997 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-6372977" ></link>
<id>urn:uuid:1423ff74-044d-bd98-f008-236a6f5ade65</id>
<updated>2026-03-24T18:55:18-04:00</updated>
<summary type="html" ><![CDATA[QUANTUM SI INC (QSI). Recent Price: $0.91. Mkt Cap:197.4mm. 10D Vol: 5.9mm]]></summary>
</entry>
<entry>
<title>QSI: HAWKINS JEFFREY ALAN (PR,CEO,DIR) Sold (S) 23,777 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-6372973" ></link>
<id>urn:uuid:14ef9e12-7be9-1ad5-32d3-6f9ac005b40a</id>
<updated>2026-03-24T18:49:53-04:00</updated>
<summary type="html" ><![CDATA[QUANTUM SI INC (QSI). Recent Price: $0.91. Mkt Cap:197.4mm. 10D Vol: 5.9mm]]></summary>
</entry>
<entry>
<title>QSI: KEYES JEFFRY R (CFO) Acquired (JB) 652,803 Shares of QUANTUM SI INC for $0.00 on 3/12</title>
<link href="http://www.insiderinsights.com/company/qsi/quantum-si-inc/id-6363104" ></link>
<id>urn:uuid:329d983e-21d7-4fe1-c990-212b92c73e7c</id>
<updated>2026-03-16T16:19:21-04:00</updated>
<summary type="html" ><![CDATA[QUANTUM SI INC (QSI). Recent Price: $0.91. Mkt Cap:197.4mm. 10D Vol: 5.9mm]]></summary>
</entry>
<entry>
<title>QSI: VIECELI JOHN S (O) Acquired (JB) 391,681 Shares of QUANTUM SI INC for $0.00 on 3/12</title>
<link href="http://www.insiderinsights.com/company/qsi/quantum-si-inc/id-6363050" ></link>
<id>urn:uuid:ce5bff39-8ad0-73ef-557a-3806a4ecdeda</id>
<updated>2026-03-16T16:14:14-04:00</updated>
<summary type="html" ><![CDATA[QUANTUM SI INC (QSI). Recent Price: $0.91. Mkt Cap:197.4mm. 10D Vol: 5.9mm]]></summary>
</entry>
<entry>
<title>QSI: HAWKINS JEFFREY ALAN (PR,CEO,DIR) Acquired (JB) 1.3mm Shares of QUANTUM SI INC for $0.00 on 3/12</title>
<link href="http://www.insiderinsights.com/company/qsi/quantum-si-inc/id-6363003" ></link>
<id>urn:uuid:80317f27-67d7-42bd-16ff-69563baee5e8</id>
<updated>2026-03-16T16:10:37-04:00</updated>
<summary type="html" ><![CDATA[QUANTUM SI INC (QSI). Recent Price: $0.91. Mkt Cap:197.4mm. 10D Vol: 5.9mm]]></summary>
</entry>
<entry>
<title>QSI: LAPOINTE CHRISTIAN (GC,SEC) Acquired (JB) 261,121 Shares of QUANTUM SI INC for $0.00 on 3/12</title>
<link href="http://www.insiderinsights.com/company/qsi/quantum-si-inc/id-6362949" ></link>
<id>urn:uuid:10d0ad65-559e-9587-5743-abd27bd1d261</id>
<updated>2026-03-16T16:06:32-04:00</updated>
<summary type="html" ><![CDATA[QUANTUM SI INC (QSI). Recent Price: $0.91. Mkt Cap:197.4mm. 10D Vol: 5.9mm]]></summary>
</entry>
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