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      <liveTestFlag>LIVE</liveTestFlag>
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        <credentials>
          <cik>0000036029</cik>
          <ccc>XXXXXXXX</ccc>
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      <periodOfReport>09-30-2025</periodOfReport>
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      <reportCalendarOrQuarter>09-30-2025</reportCalendarOrQuarter>
      <isAmendment>false</isAmendment>
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        <name>First Financial Bankshares Inc</name>
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          <ns1:street1>400 Pine Street</ns1:street1>
          <ns1:city>Abilene</ns1:city>
          <ns1:stateOrCountry>TX</ns1:stateOrCountry>
          <ns1:zipCode>79601</ns1:zipCode>
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      <reportType>13F HOLDINGS REPORT</reportType>
      <form13FFileNumber>028-23917</form13FFileNumber>
      <provideInfoForInstruction5>N</provideInfoForInstruction5>
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    <signatureBlock>
      <name>Michelle S. Hickox</name>
      <title>EVP, CFO</title>
      <phone>(325) 627-7361</phone>
      <signature>/s/ Michelle S. Hickox</signature>
      <city>Abilene</city>
      <stateOrCountry>TX</stateOrCountry>
      <signatureDate>11-10-2025</signatureDate>
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            <name>First Financial Trust &amp; Asset Management Company </name>
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