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      <registrantType>RMIC</registrantType>
      <liveTestFlag>LIVE</liveTestFlag>
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          <cik>0002018846</cik>
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      <periodOfReport>06/30/2026</periodOfReport>
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      <yearOrQuarter>YEAR</yearOrQuarter>
      <reportCalendarYear>2026</reportCalendarYear>
      <reportingPerson>
        <name>MFS Active Exchange Traded Funds Trust</name>
        <phoneNumber>617-954-5000</phoneNumber>
        <address>
          <com:street1>111 HUNTINGTON AVENUE</com:street1>
          <com:city>Boston</com:city>
          <com:stateOrCountry>MA</com:stateOrCountry>
          <com:zipCode>02199</com:zipCode>
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      </reportingPerson>
      <agentForService>
        <name>Christopher R. Bohane, Massachusetts Financial Services Company</name>
        <address>
          <com:street1>111 Huntington Avenue</com:street1>
          <com:city>Boston</com:city>
          <com:stateOrCountry>MA</com:stateOrCountry>
          <com:zipCode>02199</com:zipCode>
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        <reportType>FUND VOTING REPORT</reportType>
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      <leiNumber>254900BBYRSBROE1WI76</leiNumber>
      <explanatoryInformation>
        <explanatoryChoice>Y</explanatoryChoice>
        <explanatoryNotes>The reporting period for the MFS Active Mid Cap ETF started September 24, 2025, the date the fund commenced its investment operations. The reporting period for the MFS Blended Research Core Equity ETF and MFS Blended Research International Equity ETF started October 22, 2025, the date the fund commenced its investment operations. The reporting period for the MFS Blended Research Emerging Markets Equity ETF started March 5, 2026, the date the fund commenced its investment operations.</explanatoryNotes>
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    <signaturePage>
      <reportingPerson>MFS Active Exchange Traded Funds Trust</reportingPerson>
      <txSignature>David DiLorenzo</txSignature>
      <txPrintedSignature>David DiLorenzo</txPrintedSignature>
      <txTitle>President and Principal Executive Officer</txTitle>
      <txAsOfDate>08/26/2026</txAsOfDate>
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