<SEC-DOCUMENT>0001654954-18-001133.txt : 20180206
<SEC-HEADER>0001654954-18-001133.hdr.sgml : 20180206
<ACCEPTANCE-DATETIME>20180206172957
ACCESSION NUMBER:		0001654954-18-001133
CONFORMED SUBMISSION TYPE:	D
PUBLIC DOCUMENT COUNT:		1
ITEM INFORMATION:		<ITEMS>06b
FILED AS OF DATE:		20180206
DATE AS OF CHANGE:		20180206
EFFECTIVENESS DATE:		20180206

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			GT Biopharma, Inc.
		CENTRAL INDEX KEY:			0000109657
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				941620407
		STATE OF INCORPORATION:			FL
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		D
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	021-304968
		FILM NUMBER:		18578615

	BUSINESS ADDRESS:	
		STREET 1:		1825 K STREET
		STREET 2:		SUITE 510
		CITY:			WASHINGTON, D.C.
		STATE:			DC
		ZIP:			33602
		BUSINESS PHONE:		(800) 304-9888

	MAIL ADDRESS:	
		STREET 1:		1825 K STREET
		STREET 2:		SUITE 510
		CITY:			WASHINGTON, D.C.
		STATE:			DC
		ZIP:			33602

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	OXIS INTERNATIONAL INC
		DATE OF NAME CHANGE:	19940916

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	DDI PHARMACEUTICALS INC
		DATE OF NAME CHANGE:	19920703

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	DIAGNOSTIC DATA INC /DE/
		DATE OF NAME CHANGE:	19850312
</SEC-HEADER>
<DOCUMENT>
<TYPE>D
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<edgarSubmission>

    <schemaVersion>X0708</schemaVersion>

    <submissionType>D</submissionType>

    <testOrLive>LIVE</testOrLive>

    <primaryIssuer>
        <cik>0000109657</cik>
        <entityName>GT Biopharma, Inc.</entityName>
        <issuerAddress>
            <street1>1825 K Street, Suite 510</street1>
            <city>Washington</city>
            <stateOrCountry>DC</stateOrCountry>
            <stateOrCountryDescription>DISTRICT OF COLUMBIA</stateOrCountryDescription>
            <zipCode>20006</zipCode>
        </issuerAddress>
        <issuerPhoneNumber>800-304-9888</issuerPhoneNumber>
        <jurisdictionOfInc>FLORIDA</jurisdictionOfInc>
        <edgarPreviousNameList>
            <previousName>OXIS INTERNATIONAL INC</previousName>
            <previousName>DDI PHARMACEUTICALS INC</previousName>
            <previousName>DIAGNOSTIC DATA INC /DE/</previousName>
        </edgarPreviousNameList>
        <entityType>Corporation</entityType>
        <yearOfInc>
            <overFiveYears>true</overFiveYears>
        </yearOfInc>
    </primaryIssuer>

    <relatedPersonsList>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Steven</firstName>
                <lastName>Weldon</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>1825 K Street, Suite 510</street1>
                <city>Washington</city>
                <stateOrCountry>DC</stateOrCountry>
                <stateOrCountryDescription>DISTRICT OF COLUMBIA</stateOrCountryDescription>
                <zipCode>20006</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Anthony</firstName>
                <middleName>J.</middleName>
                <lastName>Cataldo</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>1825 K Street, Suite 510</street1>
                <city>Washington</city>
                <stateOrCountry>DC</stateOrCountry>
                <stateOrCountryDescription>DISTRICT OF COLUMBIA</stateOrCountryDescription>
                <zipCode>20006</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Kathleen</firstName>
                <lastName>Clarence-Smith</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>1825 K Street, Suite 510</street1>
                <city>Washington</city>
                <stateOrCountry>DC</stateOrCountry>
                <stateOrCountryDescription>DISTRICT OF COLUMBIA</stateOrCountryDescription>
                <zipCode>20006</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Geoffrey</firstName>
                <middleName>B.</middleName>
                <lastName>Davis</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>1825 K Street, Suite 510</street1>
                <city>Washington</city>
                <stateOrCountry>DC</stateOrCountry>
                <stateOrCountryDescription>DISTRICT OF COLUMBIA</stateOrCountryDescription>
                <zipCode>20006</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
        </relatedPersonInfo>
    </relatedPersonsList>

    <offeringData>
        <industryGroup>
            <industryGroupType>Biotechnology</industryGroupType>
        </industryGroup>
        <issuerSize>
            <revenueRange>$1 - $1,000,000</revenueRange>
        </issuerSize>
        <federalExemptionsExclusions>
            <item>06b</item>
        </federalExemptionsExclusions>
        <typeOfFiling>
            <newOrAmendment>
                <isAmendment>false</isAmendment>
            </newOrAmendment>
            <dateOfFirstSale>
                <value>2018-01-23</value>
            </dateOfFirstSale>
        </typeOfFiling>
        <durationOfOffering>
            <moreThanOneYear>false</moreThanOneYear>
        </durationOfOffering>
        <typesOfSecuritiesOffered>
            <isDebtType>true</isDebtType>
            <isOptionToAcquireType>true</isOptionToAcquireType>
        </typesOfSecuritiesOffered>
        <businessCombinationTransaction>
            <isBusinessCombinationTransaction>false</isBusinessCombinationTransaction>
        </businessCombinationTransaction>
        <minimumInvestmentAccepted>0</minimumInvestmentAccepted>
        <salesCompensationList></salesCompensationList>
        <offeringSalesAmounts>
            <totalOfferingAmount>7055000</totalOfferingAmount>
            <totalAmountSold>7055000</totalAmountSold>
            <totalRemaining>0</totalRemaining>
        </offeringSalesAmounts>
        <investors>
            <hasNonAccreditedInvestors>false</hasNonAccreditedInvestors>
            <totalNumberAlreadyInvested>14</totalNumberAlreadyInvested>
        </investors>
        <salesCommissionsFindersFees>
            <salesCommissions>
                <dollarAmount>0</dollarAmount>
            </salesCommissions>
            <findersFees>
                <dollarAmount>0</dollarAmount>
            </findersFees>
        </salesCommissionsFindersFees>
        <useOfProceeds>
            <grossProceedsUsed>
                <dollarAmount>0</dollarAmount>
            </grossProceedsUsed>
            <clarificationOfResponse>None, other than compensation to executive officers in their roles as employees.</clarificationOfResponse>
        </useOfProceeds>
        <signatureBlock>
            <signature>
                <issuerName>GT Biopharma, Inc.</issuerName>
                <signatureName>/s/ Steven Weldon</signatureName>
                <nameOfSigner>Steven Weldon</nameOfSigner>
                <signatureTitle>Chief Financial Officer</signatureTitle>
                <signatureDate>2018-02-06</signatureDate>
            </signature>
        </signatureBlock>
    </offeringData>
</edgarSubmission>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
