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    <periodOfReport>2026-02-17</periodOfReport>

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    <issuer>
        <issuerCik>0001734342</issuerCik>
        <issuerName>Amerant Bancorp Inc.</issuerName>
        <issuerTradingSymbol>AMTB</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0002041148</rptOwnerCik>
            <rptOwnerName>Parra Pedro</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O AMERANT BANCORP INC.</rptOwnerStreet1>
            <rptOwnerStreet2>220 ALHAMBRA CR. 12TH FLOOR</rptOwnerStreet2>
            <rptOwnerCity>CORAL GABLES</rptOwnerCity>
            <rptOwnerState>FL</rptOwnerState>
            <rptOwnerZipCode>33134</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>See Remarks</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

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                <transactionShares>
                    <value>4675</value>
                </transactionShares>
                <transactionPricePerShare>
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                    <value>A</value>
                </transactionAcquiredDisposedCode>
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                <underlyingSecurityTitle>
                    <value>Class A Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>4675</value>
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            </underlyingSecurity>
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                    <value>4675</value>
                </sharesOwnedFollowingTransaction>
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                    <value>D</value>
                </directOrIndirectOwnership>
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        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Performance Based Restricted Stock Units LTI 2026</value>
            </securityTitle>
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                <value>0</value>
                <footnoteId id="F7"/>
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            <transactionDate>
                <value>2026-02-17</value>
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                    <value>4675</value>
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                <transactionPricePerShare>
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            <underlyingSecurity>
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                    <value>Class A Common Stock</value>
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                    <value>4675</value>
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        </derivativeTransaction>
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    <footnotes>
        <footnote id="F1">Each restricted stock unit (&quot;RSU&quot;) is the economic equivalent of one share of Class A Common Stock.</footnote>
        <footnote id="F2">Includes 261.73 and 265.97 shares acquired under the Amerant Bancorp Inc. Employee Stock Purchase Plan on May 30, 2025 and November 28, 2025, respectively.</footnote>
        <footnote id="F3">Reflects the shares of Class A Common Stock that were surrendered in order to satisfy the reporting person's tax withholding obligation upon the vesting of RSUs.</footnote>
        <footnote id="F4">On February 16, 2023, Mr. Parra was awarded 1,000 RSUs, each representing the right to receive, following vesting, one share of Class A common stock. The award vests in substantially equal installments on each of the first three anniversaries of the date of grant, provided that Mr. Parra remains in the continuous service of the Company or a subsidiary through each such date. Since the anniversary of the date of grant was on Monday, February 16, 2026, a federal holiday, the vesting occurred on Tuesday, February 17, 2026, the next business day.</footnote>
        <footnote id="F5">On February 16, 2024, Mr. Parra was awarded 1,000 RSUs,  each representing the right to receive, following vesting, one share of Class A common stock. The award vests in substantially equal installments on each of the first three anniversaries of the date of grant, provided that Mr. Parra remains in the continuous service of the Company or a subsidiary through each such date. Since the anniversary of the date of grant was on Monday, February 16, 2026, a federal holiday, the vesting occurred on Tuesday, February 17, 2026, the next business day.</footnote>
        <footnote id="F6">On February 17, 2026, Mr. Parra was awarded 4,675 RSUs, each representing the right to receive, following vesting, one share of Class A Common Stock. The award vests in substantially equal installments on each of the first three anniversaries of the date of grant, provided that Mr. Parra remains in the continuous service of the Company or a subsidiary through each such date.</footnote>
        <footnote id="F7">Each performance-based restricted stock unit (&quot;PSU&quot;) is the economic equivalent of one share of Class A Common Stock.</footnote>
        <footnote id="F8">PSUs awarded to Mr. Parra, each representing the right to receive, following vesting, one share of Class A Common Stock. The actual number of PSUs earned shall be based on the achievement of the Relative Adjusted Return on Average Tangible Common Equity at a Threshold, Target or Maximum level set by the Compensation and Human Capital Committee (the &quot;Committee&quot;) further modified by the achievement of specified Threshold, Target or Maximum levels set by the Committee of Relative Total Shareholder Return for a 3-year period beginning January 1, 2026 and ending on December 31, 2028, and in general can range from 40% to 180% of the PSUs. The number reported reflects the target number of PSUs Mr. Parra may earn.</footnote>
    </footnotes>

    <remarks>SEVP, Chief International Banking Officer</remarks>

    <ownerSignature>
        <signatureName>/s/ Julio V. Pena, as Attorney-in-Fact for Pedro Parra</signatureName>
        <signatureDate>2026-02-19</signatureDate>
    </ownerSignature>
</ownershipDocument>
