<?xml version="1.0"?>
<edgarSubmission>

    <schemaVersion>X0708</schemaVersion>

    <submissionType>D/A</submissionType>

    <testOrLive>LIVE</testOrLive>

    <primaryIssuer>
        <cik>0002089549</cik>
        <entityName>Atlantic Labs 4 GmbH &amp; Co. KG</entityName>
        <issuerAddress>
            <street1>ROSENTHALER STR. 13</street1>
            <city>BERLIN</city>
            <stateOrCountry>2M</stateOrCountry>
            <stateOrCountryDescription>GERMANY</stateOrCountryDescription>
            <zipCode>10119</zipCode>
        </issuerAddress>
        <issuerPhoneNumber>4915110717070</issuerPhoneNumber>
        <jurisdictionOfInc>GERMANY</jurisdictionOfInc>
        <issuerPreviousNameList>
            <value>None</value>
        </issuerPreviousNameList>
        <edgarPreviousNameList>
            <value>None</value>
        </edgarPreviousNameList>
        <entityType>Other</entityType>
        <entityTypeOtherDesc>German GmbH &amp; Co. KG</entityTypeOtherDesc>
        <yearOfInc>
            <withinFiveYears>true</withinFiveYears>
            <value>2025</value>
        </yearOfInc>
    </primaryIssuer>

    <relatedPersonsList>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Christophe</firstName>
                <middleName>F.</middleName>
                <lastName>Maire</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>Linienstr. 222</street1>
                <city>Berlin</city>
                <stateOrCountry>2M</stateOrCountry>
                <stateOrCountryDescription>GERMANY</stateOrCountryDescription>
                <zipCode>10119</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Promoter</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Christophe Maire is a Managing Director of Atlantic Labs Manager GmbH, the Manager of the Issuer.</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Marc-Olivier</firstName>
                <lastName>Lucke</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>Danziger Str. 20</street1>
                <city>Berlin</city>
                <stateOrCountry>2M</stateOrCountry>
                <stateOrCountryDescription>GERMANY</stateOrCountryDescription>
                <zipCode>10435</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Promoter</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Marc-Olivier is a Managing Director of Atlantic Labs Manager GmbH, the Manager of the Issuer.</relationshipClarification>
        </relatedPersonInfo>
    </relatedPersonsList>

    <offeringData>
        <industryGroup>
            <industryGroupType>Pooled Investment Fund</industryGroupType>
            <investmentFundInfo>
                <investmentFundType>Venture Capital Fund</investmentFundType>
                <is40Act>false</is40Act>
            </investmentFundInfo>
        </industryGroup>
        <issuerSize>
            <revenueRange>Decline to Disclose</revenueRange>
        </issuerSize>
        <federalExemptionsExclusions>
            <item>06b</item>
            <item>3C</item>
            <item>3C.7</item>
        </federalExemptionsExclusions>
        <typeOfFiling>
            <newOrAmendment>
                <isAmendment>true</isAmendment>
                <previousAccessionNumber>0001013594-25-001175</previousAccessionNumber>
            </newOrAmendment>
            <dateOfFirstSale>
                <value>2025-09-01</value>
            </dateOfFirstSale>
        </typeOfFiling>
        <durationOfOffering>
            <moreThanOneYear>true</moreThanOneYear>
        </durationOfOffering>
        <typesOfSecuritiesOffered>
            <isEquityType>true</isEquityType>
            <isPooledInvestmentFundType>true</isPooledInvestmentFundType>
        </typesOfSecuritiesOffered>
        <businessCombinationTransaction>
            <isBusinessCombinationTransaction>false</isBusinessCombinationTransaction>
            <clarificationOfResponse></clarificationOfResponse>
        </businessCombinationTransaction>
        <minimumInvestmentAccepted>0</minimumInvestmentAccepted>
        <salesCompensationList></salesCompensationList>
        <offeringSalesAmounts>
            <totalOfferingAmount>Indefinite</totalOfferingAmount>
            <totalAmountSold>564900</totalAmountSold>
            <totalRemaining>Indefinite</totalRemaining>
            <clarificationOfResponse>The offering was denominated in EUR and the total amount sold above is calculated based on the exchange rate of 1.1298 as of October 1, 2026.</clarificationOfResponse>
        </offeringSalesAmounts>
        <investors>
            <hasNonAccreditedInvestors>false</hasNonAccreditedInvestors>
            <totalNumberAlreadyInvested>2</totalNumberAlreadyInvested>
        </investors>
        <salesCommissionsFindersFees>
            <salesCommissions>
                <dollarAmount>0</dollarAmount>
            </salesCommissions>
            <findersFees>
                <dollarAmount>0</dollarAmount>
            </findersFees>
            <clarificationOfResponse></clarificationOfResponse>
        </salesCommissionsFindersFees>
        <useOfProceeds>
            <grossProceedsUsed>
                <dollarAmount>0</dollarAmount>
                <isEstimate>true</isEstimate>
            </grossProceedsUsed>
            <clarificationOfResponse>The Manager is entitled to receive a management fee as described in the Issuer's offering materials.</clarificationOfResponse>
        </useOfProceeds>
        <signatureBlock>
            <authorizedRepresentative>false</authorizedRepresentative>
            <signature>
                <issuerName>Atlantic Labs 4 GmbH &amp; Co. KG</issuerName>
                <signatureName>/s/ Marc-Olivier Lucke</signatureName>
                <nameOfSigner>Marc-Olivier Lucke</nameOfSigner>
                <signatureTitle>Managing Director of the Manager</signatureTitle>
                <signatureDate>2026-10-02</signatureDate>
            </signature>
        </signatureBlock>
    </offeringData>
</edgarSubmission>
