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

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2025-08-02</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001804176</issuerCik>
        <issuerName>Butterfly Network, Inc.</issuerName>
        <issuerTradingSymbol>BFLY</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0002080055</rptOwnerCik>
            <rptOwnerName>Carlson Megan</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O BUTTERFLY NETWORK, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>1600 DISTRICT AVENUE</rptOwnerStreet2>
            <rptOwnerCity>BURLINGTON</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>01803</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Interim CFO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Class A Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>561247</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Stock Option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>12.27</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F2"/>
            </exerciseDate>
            <expirationDate>
                <value>2031-07-07</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Class A Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>20000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Consists of 63,235 shares of Class A Common Stock and 498,012 restricted stock units (&quot;RSUs&quot;). Each RSU represents the right to receive one share of Class A Common Stock upon vesting. The RSUs vest as follows: (i) 16,668 RSUs will vest on March 1, 2026; (ii) 57,333 RSUs will vest in two equal annual installments following March 1, 2025; (iii) 50,000 RSUs will vest in two equal annual installments following September 3, 2024; (iv) 74,011 RSUs will vest in three equal annual installments following March 3, 2025, and (v) 300,000 RSUs will vest as to 25% on July 1, 2026, with the remainder vesting in 12 equal quarterly installments thereafter, in each case subject to the Reporting Person's continued service on each such vesting date.</footnote>
        <footnote id="F2">100% of the shares subject to the option are fully vested and exercisable.</footnote>
    </footnotes>

    <remarks>Exhibit 24 - Power of Attorney</remarks>

    <ownerSignature>
        <signatureName>/s/ Nick Caezza, Attorney-in-Fact</signatureName>
        <signatureDate>2025-08-06</signatureDate>
    </ownerSignature>
</ownershipDocument>
