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      <SupplementalInformationDetail>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, line 11b</FormAndLineReferenceDesc>
        <ExplanationTxt>The Federal Form 990 is prepared by an independent accountant and upon submission of the draft, is reviewed by the Secretary/Treasurer and Executive Director. The form 990 is presented to the Board of Directors for review and discussion prior to finalizing with the Internal Revenue Service. Formal approval is recorded in the minutes.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, line 12c</FormAndLineReferenceDesc>
        <ExplanationTxt>To ensure accurate, up to date information, each board member reviews their disclosure statement during face-to-face meetings and updates as necessary between meetings. Each board member clearly describes their interest in each such issue, subject, person or entity on this form and return to the Foundation's Executive Director. The information on this form is reviewed by the President and Executive Director, and shared with the Board of Directors if relevant to the discussion at hand. The board member may voluntarily recuse themself from discussion and/or voting on the basis of a conflict of interest. In addition, the Board of Directors may require that the Foundation's board member: (a) refrain from voting on the issue, (b) not participate in either the discussion or the vote on the issue, (c) leave the room during discussion and voting on the issue, or (d) explain their interest in the matter fully so the Board of Directors may weigh the board member's further participation.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section C, line 19</FormAndLineReferenceDesc>
        <ExplanationTxt>Governing documents and the Conflict of Interest Policy are available on the public portion of the website. Financial statements are provided upon request.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part XI, line 9:</FormAndLineReferenceDesc>
        <ExplanationTxt>Return of 2022 unused grant funds 3,548.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part XII, Line 2c:</FormAndLineReferenceDesc>
        <ExplanationTxt>The Council/Board and the Society's Finance Committee are responsible for the oversight of the consolidated audit, including the selection of the independent accountant. The process is consistent with previous years.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
    <IRS990ScheduleR documentId="RetDoc1043400001">
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        <DisregardedEntityName>
          <BusinessNameLine1Txt>American Society of Transplant Surgeons</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>1401 South Clark St Ste 1120</AddressLine1Txt>
          <CityNm>Arlington</CityNm>
          <StateAbbreviationCd>VA</StateAbbreviationCd>
          <ZIPCd>222024165</ZIPCd>
        </USAddress>
        <EIN>133048373</EIN>
        <PrimaryActivitiesTxt>To advance the art and science of transplant surgery</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>OR</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(c)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>Line 7</PublicCharityStatusTxt>
        <ControlledOrganizationInd>0</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <ReceiptOfIntAnntsRntsRyltsInd>0</ReceiptOfIntAnntsRntsRyltsInd>
      <GiftGrntOrCapContriToOthOrgInd>0</GiftGrntOrCapContriToOthOrgInd>
      <GiftGrntCapContriFromOthOrgInd>0</GiftGrntCapContriFromOthOrgInd>
      <LoansOrGuaranteesToOtherOrgInd>0</LoansOrGuaranteesToOtherOrgInd>
      <LoansOrGuaranteesFromOthOrgInd>0</LoansOrGuaranteesFromOthOrgInd>
      <DivRelatedOrganizationInd>0</DivRelatedOrganizationInd>
      <AssetSaleToOtherOrgInd>0</AssetSaleToOtherOrgInd>
      <AssetPurchaseFromOtherOrgInd>0</AssetPurchaseFromOtherOrgInd>
      <AssetExchangeInd>0</AssetExchangeInd>
      <RentalOfFacilitiesToOthOrgInd>0</RentalOfFacilitiesToOthOrgInd>
      <RentalOfFcltsFromOthOrgInd>0</RentalOfFcltsFromOthOrgInd>
      <PerformOfServicesForOthOrgInd>0</PerformOfServicesForOthOrgInd>
      <PerformOfServicesByOtherOrgInd>1</PerformOfServicesByOtherOrgInd>
      <SharingOfFacilitiesInd>1</SharingOfFacilitiesInd>
      <PaidEmployeesSharingInd>1</PaidEmployeesSharingInd>
      <ReimbursementPaidToOtherOrgInd>0</ReimbursementPaidToOtherOrgInd>
      <ReimbursementPaidByOtherOrgInd>0</ReimbursementPaidByOtherOrgInd>
      <TransferToOtherOrgInd>0</TransferToOtherOrgInd>
      <TransferFromOtherOrgInd>0</TransferFromOtherOrgInd>
    </IRS990ScheduleR>
  </ReturnData>
</Return>