<SEC-DOCUMENT>0001193125-26-333719.txt : 20260805
<SEC-HEADER>0001193125-26-333719.hdr.sgml : 20260805
<ACCEPTANCE-DATETIME>20260805060141
ACCESSION NUMBER:		0001193125-26-333719
CONFORMED SUBMISSION TYPE:	SCHEDULE 13G
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20260805
DATE AS OF CHANGE:		20260805

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Seaport Therapeutics, Inc.
		CENTRAL INDEX KEY:			0002042347
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		ORGANIZATION NAME:           	03 Life Sciences
		EIN:				992235719
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13G
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-95656
		FILM NUMBER:		261241101

	BUSINESS ADDRESS:	
		STREET 1:		6 TIDE STREET
		STREET 2:		SUITE 400
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02110
		BUSINESS PHONE:		617-807-4062

	MAIL ADDRESS:	
		STREET 1:		6 TIDE STREET
		STREET 2:		SUITE 400
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02110

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PAUL STEVEN M
		CENTRAL INDEX KEY:			0001237564
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13G

	MAIL ADDRESS:	
		STREET 1:		RAPPORT THERAPEUTICS, INC.
		STREET 2:		1325 BOYLSTON STREET, SUITE 401
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02215
</SEC-HEADER>
<DOCUMENT>
<TYPE>SCHEDULE 13G
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/schedule13g" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <schemaVersion>X0202</schemaVersion>
<headerData>
    <submissionType>SCHEDULE 13G</submissionType>
    <filerInfo>
      <filer>
        <filerCredentials>
          <cik>0001237564</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>



    </filerInfo>
  </headerData>
  <formData>
    <coverPageHeader>
      <securitiesClassTitle>Voting Common Stock, $0.0001 par value per share</securitiesClassTitle>
      <eventDateRequiresFilingThisStatement>06/30/2026</eventDateRequiresFilingThisStatement>
      <issuerInfo>
        <issuerCik>0002042347</issuerCik>
        <issuerName>Seaport Therapeutics, Inc.</issuerName>
        <issuerCusips>
          <issuerCusipNumber>81221K108</issuerCusipNumber>
        </issuerCusips>
        <issuerPrincipalExecutiveOfficeAddress>
          <street1 xmlns="http://www.sec.gov/edgar/common">101 Seaport Blvd., Floor 12</street1>
          <city xmlns="http://www.sec.gov/edgar/common">Boston</city>
          <stateOrCountry xmlns="http://www.sec.gov/edgar/common">MA</stateOrCountry>
          <zipCode xmlns="http://www.sec.gov/edgar/common">02210</zipCode>
        </issuerPrincipalExecutiveOfficeAddress>
      </issuerInfo>
      <designateRulesPursuantThisScheduleFiled>
        <designateRulePursuantThisScheduleFiled>Rule 13d-1(d)</designateRulePursuantThisScheduleFiled>
      </designateRulesPursuantThisScheduleFiled>
    </coverPageHeader>
    <coverPageHeaderReportingPersonDetails>


      <reportingPersonName>PAUL STEVEN M</reportingPersonName>
      <citizenshipOrOrganization>X1</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
        <soleVotingPower>3516718</soleVotingPower>
        <sharedVotingPower>0</sharedVotingPower>
        <soleDispositivePower>3516718</soleDispositivePower>
        <sharedDispositivePower>0</sharedDispositivePower>
      </reportingPersonBeneficiallyOwnedNumberOfShares>
      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>3516718</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
      <aggregateAmountExcludesCertainSharesFlag>N</aggregateAmountExcludesCertainSharesFlag>
      <classPercent>6.3</classPercent>
      <typeOfReportingPerson>IN</typeOfReportingPerson>
    </coverPageHeaderReportingPersonDetails>
    <items>
      <item1>
        <issuerName>Seaport Therapeutics, Inc.</issuerName>
        <issuerPrincipalExecutiveOfficeAddress>101 Seaport Blvd., Floor 12, Boston, MA 02210</issuerPrincipalExecutiveOfficeAddress>
      </item1>
      <item2>
        <filingPersonName>This statement is filed on behalf of Steven M. Paul (the "Reporting Person"). </filingPersonName>
        <principalBusinessOfficeOrResidenceAddress>The address of the principal business office of the Reporting Person is 101 Seaport Blvd., Floor 12, Boston, MA 02210.</principalBusinessOfficeOrResidenceAddress>
        <citizenship>The Reporting Person is a citizen of the United States.</citizenship>
      </item2>
      <item3>
        <notApplicableFlag>Y</notApplicableFlag>
      </item3>
      <item4>
        <amountBeneficiallyOwned>The ownership information below represents beneficial ownership of Voting Common Stock, par value $0.0001 per share ("Common Stock") of the Issuer as of June 30, 2026, based upon 53,530,550 shares of Common Stock outstanding as of June 30, 2026, as provided by the Issuer.

The Reporting Person is deemed to be the beneficial owner of 3,516,718 shares of Common Stock, consisting of (i) 863,031 shares of Common Stock held of record by the Reporting Person and (ii) 2,653,687 shares of Common Stock subject to stock options exercisable within 60 days of June 30, 2026 by the Reporting Person.  </amountBeneficiallyOwned>
        <classPercent>6.3</classPercent>
        <numberOfSharesPersonHas>
          <solePowerOrDirectToVote>3,516,718</solePowerOrDirectToVote>
          <sharedPowerOrDirectToVote>0</sharedPowerOrDirectToVote>
          <solePowerOrDirectToDispose>3,516,718</solePowerOrDirectToDispose>
          <sharedPowerOrDirectToDispose>0</sharedPowerOrDirectToDispose>
        </numberOfSharesPersonHas>
      </item4>
      <item5>
        <notApplicableFlag>Y</notApplicableFlag>
      </item5>
      <item6>
        <notApplicableFlag>Y</notApplicableFlag>
      </item6>
      <item7>
        <notApplicableFlag>Y</notApplicableFlag>
      </item7>
      <item8>
        <notApplicableFlag>Y</notApplicableFlag>
      </item8>
      <item9>
        <notApplicableFlag>Y</notApplicableFlag>
      </item9>
      <item10>
        <notApplicableFlag>Y</notApplicableFlag>
      </item10>
    </items>
    <signatureInformation>
      <reportingPersonName>PAUL STEVEN M</reportingPersonName>
      <signatureDetails>
        <signature>/s/ Steven M. Paul</signature>
        <title>Steven M. Paul</title>
        <date>08/05/2026</date>
      </signatureDetails>
    </signatureInformation>
  </formData>
</edgarSubmission>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
