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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/spro" ></link>
<id>urn:uuid:bde9c979-d624-741d-0c42-18cb472ad64b</id>
<updated>2026-06-28T20:27:12-04:00</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>SPRO: DESHPANDE MILIND (DIR) Acquired (JB) 10k Shares of SPERO THERAPEUTICS INC for $0.00 on 6/23</title>
<link href="http://www.insiderinsights.com/company/spro/spero-therapeutics-inc/id-6432629" ></link>
<id>urn:uuid:6d67d19a-2639-3de8-6a05-743d8b310ed8</id>
<updated>2026-06-25T19:26:49-04:00</updated>
<summary type="html" ><![CDATA[SPERO THERAPEUTICS INC (SPRO). Recent Price: $2.26. Mkt Cap:130.9mm. 10D Vol: 2.9mm]]></summary>
</entry>
<entry>
<title>SPRO: TREGONING KATHLEEN (DIR) Acquired (JB) 10k Shares of SPERO THERAPEUTICS INC for $0.00 on 6/23</title>
<link href="http://www.insiderinsights.com/company/spro/spero-therapeutics-inc/id-6432628" ></link>
<id>urn:uuid:38681070-ad3c-75de-2d77-b41130c32b0a</id>
<updated>2026-06-25T19:17:12-04:00</updated>
<summary type="html" ><![CDATA[SPERO THERAPEUTICS INC (SPRO). Recent Price: $2.26. Mkt Cap:130.9mm. 10D Vol: 2.9mm]]></summary>
</entry>
<entry>
<title>SPRO: SMITH CYNTHIA (DIR) Acquired (JB) 10k Shares of SPERO THERAPEUTICS INC for $0.00 on 6/23</title>
<link href="http://www.insiderinsights.com/company/spro/spero-therapeutics-inc/id-6432627" ></link>
<id>urn:uuid:e6969dd9-8a09-1c88-04e7-13270b9091ab</id>
<updated>2026-06-25T19:14:32-04:00</updated>
<summary type="html" ><![CDATA[SPERO THERAPEUTICS INC (SPRO). Recent Price: $2.26. Mkt Cap:130.9mm. 10D Vol: 2.9mm]]></summary>
</entry>
<entry>
<title>SPRO: VINK PATRICK V J J (DIR) Acquired (JB) 10k Shares of SPERO THERAPEUTICS INC for $0.00 on 6/23</title>
<link href="http://www.insiderinsights.com/company/spro/spero-therapeutics-inc/id-6432626" ></link>
<id>urn:uuid:95a2ddf7-209d-27be-9258-185391f4e24e</id>
<updated>2026-06-25T19:12:10-04:00</updated>
<summary type="html" ><![CDATA[SPERO THERAPEUTICS INC (SPRO). Recent Price: $2.26. Mkt Cap:130.9mm. 10D Vol: 2.9mm]]></summary>
</entry>
<entry>
<title>SPRO: THOMAS FRANK E (DIR) Acquired (JB) 10k Shares of SPERO THERAPEUTICS INC for $0.00 on 6/23</title>
<link href="http://www.insiderinsights.com/company/spro/spero-therapeutics-inc/id-6432622" ></link>
<id>urn:uuid:8717498f-7c49-c707-ed15-8b6169334376</id>
<updated>2026-06-25T18:59:52-04:00</updated>
<summary type="html" ><![CDATA[SPERO THERAPEUTICS INC (SPRO). Recent Price: $2.26. Mkt Cap:130.9mm. 10D Vol: 2.9mm]]></summary>
</entry>
<entry>
<title>SPRO: JACKSON SCOTT THOMAS (DIR) Acquired (JB) 10k Shares of SPERO THERAPEUTICS INC for $0.00 on 6/23</title>
<link href="http://www.insiderinsights.com/company/spro/spero-therapeutics-inc/id-6432621" ></link>
<id>urn:uuid:80b252e3-c5ac-aaca-234e-6d4d10eb95ec</id>
<updated>2026-06-25T18:57:29-04:00</updated>
<summary type="html" ><![CDATA[SPERO THERAPEUTICS INC (SPRO). Recent Price: $2.26. Mkt Cap:130.9mm. 10D Vol: 2.9mm]]></summary>
</entry>
<entry>
<title>SPRO: POTTAGE JOHN C JR (DIR) Acquired (JB) 10k Shares of SPERO THERAPEUTICS INC for $0.00 on 6/23</title>
<link href="http://www.insiderinsights.com/company/spro/spero-therapeutics-inc/id-6432620" ></link>
<id>urn:uuid:6074076c-3bc9-d3ee-15ab-362bfcb6a08c</id>
<updated>2026-06-25T18:55:43-04:00</updated>
<summary type="html" ><![CDATA[SPERO THERAPEUTICS INC (SPRO). Recent Price: $2.26. Mkt Cap:130.9mm. 10D Vol: 2.9mm]]></summary>
</entry>
<entry>
<title>SPRO: RAJAVELU ESTHER (O) Sold (S) 25,240 Shares of SPERO THERAPEUTICS INC for $2.51 on 5/4</title>
<link href="http://www.insiderinsights.com/company/spro/spero-therapeutics-inc/id-6397294" ></link>
<id>urn:uuid:ba6d7f2b-b57f-bcfd-5ff7-973be56ddf3a</id>
<updated>2026-05-06T21:53:26-04:00</updated>
<summary type="html" ><![CDATA[SPERO THERAPEUTICS INC (SPRO). Recent Price: $2.26. Mkt Cap:130.9mm. 10D Vol: 2.9mm]]></summary>
</entry>
<entry>
<title>SPRO: RAJAVELU ESTHER (O) Sold (S) 87,917 Shares of SPERO THERAPEUTICS INC for $2.36 on 2/6</title>
<link href="http://www.insiderinsights.com/company/spro/spero-therapeutics-inc/id-6323019" ></link>
<id>urn:uuid:1d1f5b24-a911-3f31-7a4c-58d2007f7586</id>
<updated>2026-02-09T21:31:37-05:00</updated>
<summary type="html" ><![CDATA[SPERO THERAPEUTICS INC (SPRO). Recent Price: $2.26. Mkt Cap:130.9mm. 10D Vol: 2.9mm]]></summary>
</entry>
<entry>
<title>SPRO: KEUTZER TIMOTHY (COO) Sold (S) 18,652 Shares of SPERO THERAPEUTICS INC for $2.36 on 2/6</title>
<link href="http://www.insiderinsights.com/company/spro/spero-therapeutics-inc/id-6323010" ></link>
<id>urn:uuid:52a7f476-9d57-8d55-fb80-218d4c8cd42c</id>
<updated>2026-02-09T21:09:39-05:00</updated>
<summary type="html" ><![CDATA[SPERO THERAPEUTICS INC (SPRO). Recent Price: $2.26. Mkt Cap:130.9mm. 10D Vol: 2.9mm]]></summary>
</entry>
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