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

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2021-07-07</periodOfReport>

    <issuer>
        <issuerCik>0001556727</issuerCik>
        <issuerName>First Northwest Bancorp</issuerName>
        <issuerTradingSymbol>FNWB</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001763732</rptOwnerCik>
            <rptOwnerName>Riffle Randy T.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>105 WEST 8TH STREET</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>PORT ANGELES</rptOwnerCity>
            <rptOwnerState>WA</rptOwnerState>
            <rptOwnerZipCode>98362</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isOfficer>1</isOfficer>
            <officerTitle>EVP/Chief Lending Officer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2021-07-07</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>F</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>1015</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>17.75</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>29282</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Includes 6,000 unvested shares of restricted stock granted under the Issuer's 2015 Equity Incentive Plan, of which one-fourth will vest per year beginning on May 1, 2022; 8,334 unvested shares of restricted stock granted under Issuer's 2020 Equity Incentive Plan (&quot;2020 Plan&quot;), of which one-half will vest per year beginning on July 7, 2022; and 5,649 unvested shares of restricted stock granted under the 2020 Plan, of which one-third will vest per year beginning on March 7, 2022.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Allison R. Mahaney, Attorney-in-Fact, for Randy T. Riffle</signatureName>
        <signatureDate>2021-07-08</signatureDate>
    </ownerSignature>
</ownershipDocument>
