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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>SHANDA H BLACKMON MD</PersonNm>
        <TitleTxt>DIRECTOR-AT-LARGE (THRU 1/2020)</TitleTxt>
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        <AverageHoursPerWeekRltdOrgRt>4.00</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>JOSEPH C CLEVELAND MD</PersonNm>
        <TitleTxt>DIRECTOR-AT-LARGE</TitleTxt>
        <AverageHoursPerWeekRt>2.00</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.00</AverageHoursPerWeekRltdOrgRt>
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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>GREGORY F FONTANA MD</PersonNm>
        <TitleTxt>DIRECTOR-AT-LARGE</TitleTxt>
        <AverageHoursPerWeekRt>2.00</AverageHoursPerWeekRt>
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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>JENNIFER C ROMANO MD</PersonNm>
        <TitleTxt>DIRECTOR-AT-LARGE</TitleTxt>
        <AverageHoursPerWeekRt>2.00</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.00</AverageHoursPerWeekRltdOrgRt>
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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>VINHOD H THOURANI MD</PersonNm>
        <TitleTxt>DIRECTOR-AT-LARGE</TitleTxt>
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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>JAMES S TWEDDELL MD</PersonNm>
        <TitleTxt>DIRECTOR-AT-LARGE</TitleTxt>
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        <AverageHoursPerWeekRltdOrgRt>0.00</AverageHoursPerWeekRltdOrgRt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>ARA A VAPORCIYAN MD</PersonNm>
        <TitleTxt>DIRECTOR-AT-LARGE</TitleTxt>
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        <AverageHoursPerWeekRltdOrgRt>0.00</AverageHoursPerWeekRltdOrgRt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>ELAINE WEISS</PersonNm>
        <TitleTxt>CEO/EXECUTIVE DIRECTOR</TitleTxt>
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        <AverageHoursPerWeekRltdOrgRt>1.00</AverageHoursPerWeekRltdOrgRt>
        <OfficerInd>X</OfficerInd>
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      <Form990PartVIISectionAGrp>
        <PersonNm>WILLIAM SEWARD</PersonNm>
        <TitleTxt>ASSOCIATE EXECUTIVE DIRECTOR</TitleTxt>
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        <AverageHoursPerWeekRltdOrgRt>0.00</AverageHoursPerWeekRltdOrgRt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>GRAHAME RUSH</PersonNm>
        <TitleTxt>ASSOCIATE EXECUTIVE DIRECTOR</TitleTxt>
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        <AverageHoursPerWeekRltdOrgRt>1.00</AverageHoursPerWeekRltdOrgRt>
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        <ReportableCompFromOrgAmt>369017</ReportableCompFromOrgAmt>
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        <OtherCompensationAmt>55564</OtherCompensationAmt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>ROBERT HABIB</PersonNm>
        <TitleTxt>DIRECTOR, STS RESEARCH CENTER</TitleTxt>
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        <AverageHoursPerWeekRltdOrgRt>0.00</AverageHoursPerWeekRltdOrgRt>
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        <ReportableCompFromOrgAmt>338294</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>55024</OtherCompensationAmt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>KEITH BURA</PersonNm>
        <TitleTxt>DIRECTOR OF FINANCE &amp; ADMINISTRATION</TitleTxt>
        <AverageHoursPerWeekRt>40.00</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>1.00</AverageHoursPerWeekRltdOrgRt>
        <KeyEmployeeInd>X</KeyEmployeeInd>
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      <Form990PartVIISectionAGrp>
        <PersonNm>AVIDAN STERN</PersonNm>
        <TitleTxt>ASSOCIATE GENERAL COUNSEL</TitleTxt>
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        <AverageHoursPerWeekRltdOrgRt>1.00</AverageHoursPerWeekRltdOrgRt>
        <KeyEmployeeInd>X</KeyEmployeeInd>
        <ReportableCompFromOrgAmt>262961</ReportableCompFromOrgAmt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>NATALIE BODEN</PersonNm>
        <TitleTxt>DIR. OF MARKETING &amp; COMMUNICATION</TitleTxt>
        <AverageHoursPerWeekRt>40.00</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>1.00</AverageHoursPerWeekRltdOrgRt>
        <KeyEmployeeInd>X</KeyEmployeeInd>
        <ReportableCompFromOrgAmt>220002</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
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      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>DONNA MCDONALD</PersonNm>
        <TitleTxt>DIRECTOR OF QUALITY</TitleTxt>
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        <AverageHoursPerWeekRltdOrgRt>0.00</AverageHoursPerWeekRltdOrgRt>
        <KeyEmployeeInd>X</KeyEmployeeInd>
        <ReportableCompFromOrgAmt>236653</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>20176</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>COURTNEY YOHE</PersonNm>
        <TitleTxt>DIRECTOR OF GOVERNMENT RELATIONS</TitleTxt>
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        <AverageHoursPerWeekRltdOrgRt>0.00</AverageHoursPerWeekRltdOrgRt>
        <KeyEmployeeInd>X</KeyEmployeeInd>
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      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>SCOTT BRADBURY</PersonNm>
        <TitleTxt>DIRECTOR OF EDUCATION</TitleTxt>
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        <AverageHoursPerWeekRltdOrgRt>0.00</AverageHoursPerWeekRltdOrgRt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>COLLEEN DONOHOE</PersonNm>
        <TitleTxt>DIRECTOR OF MEETINGS AND CONVENTIONS</TitleTxt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>JANE HAN</PersonNm>
        <TitleTxt>ASSOCIATE DIRECTOR OF QUALITY</TitleTxt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>BETH WINER</PersonNm>
        <TitleTxt>EXECUTIVE DIRECTOR, STSA &amp; TSDA</TitleTxt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>THERESA LOPEZ</PersonNm>
        <TitleTxt>SENIOR MANAGER, HUMAN RESOURCES</TitleTxt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>KEVIN GILMARTIN</PersonNm>
        <TitleTxt>SENIOR MANAGER - IT</TitleTxt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>ROBERT WYNBRANDT</PersonNm>
        <TitleTxt>FORMER OFFICER</TitleTxt>
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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
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      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>IQVIA RDS INC</BusinessNameLine1Txt>
          </BusinessName>
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        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>PO BOX 13979</AddressLine1Txt>
            <CityNm>RESEARCH TRIANGLE PARK</CityNm>
            <StateAbbreviationCd>NC</StateAbbreviationCd>
            <ZIPCd>27709</ZIPCd>
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        </ContractorAddress>
        <ServicesDesc>DATA WAREHOUSING</ServicesDesc>
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      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>DUKE UNIVERSITY</BusinessNameLine1Txt>
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        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>PO BOX 17969</AddressLine1Txt>
            <CityNm>DURHAM</CityNm>
            <StateAbbreviationCd>NC</StateAbbreviationCd>
            <ZIPCd>27715</ZIPCd>
          </USAddress>
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        <ServicesDesc>DATA WAREHOUSING</ServicesDesc>
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      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>UNIVERSITY OF ALABAMA AT BIRMINGHAM</BusinessNameLine1Txt>
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        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>701 19TH ST SOUTH LHRB 790</AddressLine1Txt>
            <CityNm>BIRMINGHAM</CityNm>
            <StateAbbreviationCd>AL</StateAbbreviationCd>
            <ZIPCd>35294</ZIPCd>
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        <ServicesDesc>DATA WAREHOUSING</ServicesDesc>
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      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>PROJECTION INC</BusinessNameLine1Txt>
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        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>PO BOX 890472</AddressLine1Txt>
            <CityNm>CHARLOTTE</CityNm>
            <StateAbbreviationCd>NC</StateAbbreviationCd>
            <ZIPCd>28289</ZIPCd>
          </USAddress>
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        <ServicesDesc>AUDIO VISUAL</ServicesDesc>
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      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>COBALT</BusinessNameLine1Txt>
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          <USAddress>
            <AddressLine1Txt>2800 EISENHOWER AVE STE 100</AddressLine1Txt>
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            <StateAbbreviationCd>VA</StateAbbreviationCd>
            <ZIPCd>22314</ZIPCd>
          </USAddress>
        </ContractorAddress>
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      <TotalContributionsAmt>1064334</TotalContributionsAmt>
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        <Desc>NATIONAL DATABASE</Desc>
        <BusinessCd>611710</BusinessCd>
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      <ProgramServiceRevenueGrp>
        <Desc>TVT REGISTRY</Desc>
        <BusinessCd>611710</BusinessCd>
        <TotalRevenueColumnAmt>4348000</TotalRevenueColumnAmt>
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        <Desc>EDUCATIONAL MEETINGS</Desc>
        <BusinessCd>611710</BusinessCd>
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      <ProgramServiceRevenueGrp>
        <Desc>MEMBERSHIP DUES</Desc>
        <BusinessCd>611710</BusinessCd>
        <TotalRevenueColumnAmt>2820084</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>2820084</RelatedOrExemptFuncIncomeAmt>
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      <ProgramServiceRevenueGrp>
        <Desc>PUBLICATIONS &amp; SUBSCRIPTIONS</Desc>
        <BusinessCd>611710</BusinessCd>
        <TotalRevenueColumnAmt>1381768</TotalRevenueColumnAmt>
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        <RelatedOrExemptFuncIncomeAmt>105558</RelatedOrExemptFuncIncomeAmt>
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        <TotalRevenueColumnAmt>960699</TotalRevenueColumnAmt>
        <ExclusionAmt>960699</ExclusionAmt>
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        <ExclusionAmt>6480797</ExclusionAmt>
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      <RentalIncomeOrLossGrp>
        <RealAmt>69977</RealAmt>
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      <NetRentalIncomeOrLossGrp>
        <TotalRevenueColumnAmt>69977</TotalRevenueColumnAmt>
        <ExclusionAmt>69977</ExclusionAmt>
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      <GrossAmountSalesAssetsGrp>
        <SecuritiesAmt>57696927</SecuritiesAmt>
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      <LessCostOthBasisSalesExpnssGrp>
        <SecuritiesAmt>53096074</SecuritiesAmt>
      </LessCostOthBasisSalesExpnssGrp>
      <GainOrLossGrp>
        <SecuritiesAmt>4600853</SecuritiesAmt>
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      <NetGainOrLossInvestmentsGrp>
        <TotalRevenueColumnAmt>4600853</TotalRevenueColumnAmt>
        <ExclusionAmt>4600853</ExclusionAmt>
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      <CostOfGoodsSoldAmt>52</CostOfGoodsSoldAmt>
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        <TotalRevenueColumnAmt>28</TotalRevenueColumnAmt>
        <UnrelatedBusinessRevenueAmt>28</UnrelatedBusinessRevenueAmt>
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        <Desc>EBLAST REVENUE</Desc>
        <BusinessCd>900004</BusinessCd>
        <TotalRevenueColumnAmt>30000</TotalRevenueColumnAmt>
        <UnrelatedBusinessRevenueAmt>30000</UnrelatedBusinessRevenueAmt>
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      <OtherRevenueMiscGrp>
        <Desc>POD CAST REVENUE</Desc>
        <BusinessCd>900004</BusinessCd>
        <TotalRevenueColumnAmt>950</TotalRevenueColumnAmt>
        <UnrelatedBusinessRevenueAmt>950</UnrelatedBusinessRevenueAmt>
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      <OtherRevenueTotalAmt>30950</OtherRevenueTotalAmt>
      <TotalRevenueGrp>
        <TotalRevenueColumnAmt>35419706</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>21062504</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>1180542</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>12112326</ExclusionAmt>
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      <InfoInScheduleOPartIXInd>X</InfoInScheduleOPartIXInd>
      <GrantsToDomesticOrgsGrp>
        <TotalAmt>1126991</TotalAmt>
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      <GrantsToDomesticIndividualsGrp>
        <TotalAmt>82089</TotalAmt>
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      <CompCurrentOfcrDirectorsGrp>
        <TotalAmt>4732435</TotalAmt>
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      <OtherSalariesAndWagesGrp>
        <TotalAmt>4881491</TotalAmt>
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        <TotalAmt>351863</TotalAmt>
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        <TotalAmt>805714</TotalAmt>
      </OtherEmployeeBenefitsGrp>
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        <TotalAmt>569689</TotalAmt>
      </PayrollTaxesGrp>
      <FeesForServicesLegalGrp>
        <TotalAmt>116874</TotalAmt>
      </FeesForServicesLegalGrp>
      <FeesForServicesAccountingGrp>
        <TotalAmt>49100</TotalAmt>
      </FeesForServicesAccountingGrp>
      <FeesForSrvcInvstMgmntFeesGrp>
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        <TotalAmt>10108932</TotalAmt>
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      <InsuranceGrp>
        <TotalAmt>92954</TotalAmt>
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      <OtherExpensesGrp>
        <Desc>MEMBERSHIP AND CONTRIBU</Desc>
        <TotalAmt>85704</TotalAmt>
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      <OtherExpensesGrp>
        <Desc>UBI TAX</Desc>
        <TotalAmt>14468</TotalAmt>
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      <AllOtherExpensesGrp>
        <TotalAmt>106817</TotalAmt>
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        <EOYAmt>555419</EOYAmt>
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        <BOYAmt>69890330</BOYAmt>
        <EOYAmt>73521371</EOYAmt>
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      <AccountsPayableAccrExpnssGrp>
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        <EOYAmt>9650724</EOYAmt>
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        <EOYAmt>6893824</EOYAmt>
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      <TotalLiabilitiesGrp>
        <BOYAmt>17038508</BOYAmt>
        <EOYAmt>16544548</EOYAmt>
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      <OrganizationFollowsFASB117Ind>X</OrganizationFollowsFASB117Ind>
      <NoDonorRestrictionNetAssetsGrp>
        <BOYAmt>52400064</BOYAmt>
        <EOYAmt>56497383</EOYAmt>
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      <DonorRestrictionNetAssetsGrp>
        <BOYAmt>451758</BOYAmt>
        <EOYAmt>479440</EOYAmt>
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      <TotalNetAssetsFundBalanceGrp>
        <BOYAmt>52851822</BOYAmt>
        <EOYAmt>56976823</EOYAmt>
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      <TotLiabNetAssetsFundBalanceGrp>
        <BOYAmt>69890330</BOYAmt>
        <EOYAmt>73521371</EOYAmt>
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      <ReconcilationRevenueExpnssAmt>6480719</ReconcilationRevenueExpnssAmt>
      <NetUnrlzdGainsLossesInvstAmt>-2355718</NetUnrlzdGainsLossesInvstAmt>
      <OtherChangesInNetAssetsAmt>0</OtherChangesInNetAssetsAmt>
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>0</AccountantCompileOrReviewInd>
      <FSAuditedInd>1</FSAuditedInd>
      <FSAuditedBasisGrp>
        <ConsolidatedBasisFinclStmtInd>X</ConsolidatedBasisFinclStmtInd>
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      <AuditCommitteeInd>1</AuditCommitteeInd>
      <FederalGrantAuditRequiredInd>0</FederalGrantAuditRequiredInd>
    </IRS990>
    <IRS990ScheduleB documentId="RetDoc1234500001">
      <ContributorInformationGrp>
        <ContributorNum>RESTRICTED</ContributorNum>
        <ContributorBusinessName>
          <BusinessNameLine1>RESTRICTED</BusinessNameLine1>
        </ContributorBusinessName>
        <ContributorUSAddress>
          <AddressLine1>RESTRICTED</AddressLine1>
          <AddressLine2>RESTRICTED</AddressLine2>
          <City>RESTRICTED</City>
          <State>RESTRICTED</State>
          <ZIPCode>RESTRICTED</ZIPCode>
        </ContributorUSAddress>
        <TotalContributionsAmt>RESTRICTED</TotalContributionsAmt>
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      <OnlyInHouseLobbyingInd>0</OnlyInHouseLobbyingInd>
      <AgreeCarryoverPriorYearInd>1</AgreeCarryoverPriorYearInd>
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      <NonDeductibleLbbyngPltclCYAmt>655804</NonDeductibleLbbyngPltclCYAmt>
      <NonDedLbbyngPltclCyovAmt>-1352392</NonDedLbbyngPltclCyovAmt>
      <NonDeductibleLbbyngPltclTotAmt>-696588</NonDeductibleLbbyngPltclTotAmt>
      <AggregateReportedDuesNtcAmt>359306</AggregateReportedDuesNtcAmt>
      <TaxableAmt>-1055894</TaxableAmt>
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    <IRS990ScheduleD documentId="RetDoc1040000001">
      <CYEndwmtFundGrp>
        <BeginningYearBalanceAmt>451757</BeginningYearBalanceAmt>
        <InvestmentEarningsOrLossesAmt>38987</InvestmentEarningsOrLossesAmt>
        <OtherExpendituresAmt>11305</OtherExpendituresAmt>
        <EndYearBalanceAmt>479439</EndYearBalanceAmt>
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      <CYMinus1YrEndwmtFundGrp>
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        <InvestmentEarningsOrLossesAmt>62200</InvestmentEarningsOrLossesAmt>
        <OtherExpendituresAmt>11108</OtherExpendituresAmt>
        <EndYearBalanceAmt>451757</EndYearBalanceAmt>
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      <CYMinus2YrEndwmtFundGrp>
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        <InvestmentEarningsOrLossesAmt>-16323</InvestmentEarningsOrLossesAmt>
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        <EndYearBalanceAmt>400665</EndYearBalanceAmt>
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        <EndYearBalanceAmt>429133</EndYearBalanceAmt>
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        <EndYearBalanceAmt>406730</EndYearBalanceAmt>
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      <EndowmentsHeldRelatedOrgInd>0</EndowmentsHeldRelatedOrgInd>
      <LeaseholdImprovementsGrp>
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        <DepreciationAmt>662757</DepreciationAmt>
        <BookValueAmt>1924072</BookValueAmt>
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      <EquipmentGrp>
        <OtherCostOrOtherBasisAmt>168594</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>140943</DepreciationAmt>
        <BookValueAmt>27651</BookValueAmt>
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      <OtherLandBuildingsGrp>
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        <DepreciationAmt>6527795</DepreciationAmt>
        <BookValueAmt>7984288</BookValueAmt>
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      <TotalBookValueLandBuildingsAmt>9936011</TotalBookValueLandBuildingsAmt>
      <FootnoteTextInd>X</FootnoteTextInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART X, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>ACCOUNTING PRINCIPLES GENERALLY ACCEPTED IN THE UNITED STATES OF AMERICA REQUIRE MANAGEMENT TO EVALUATE TAX POSITIONS TAKEN BY THE SOCIETY AND RECOGNIZE A TAX LIABILITY IF THE SOCIETY HAS TAKEN AN UNCERTAIN POSITION THAT MORE LIKELY THAN NOT WOULD NOT BE SUSTAINED UPON EXAMINATION BY THE IRS OR OTHER APPLICABLE TAXING AUTHORITIES. MANAGEMENT HAS ANALYZED THE TAX POSITIONS TAKEN BY THE SOCIETY AND HAS CONCLUDED THAT, AS OF DECEMBER 31, 2020, THERE ARE NO UNCERTAIN POSITIONS TAKEN OR EXPECTED TO BE TAKEN THAT WOULD REQUIRE RECOGNITION OF A LIABILITY OR DISCLOSURE IN THE CONSOLIDATED FINANCIAL STATEMENTS.</ExplanationTxt>
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        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>INVESTMENT (LIQUIDATED IN 2020)</TypeOfActivitiesConductedTxt>
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      <SubtotalOfficesCnt>0</SubtotalOfficesCnt>
      <SubtotalEmployeesCnt>0</SubtotalEmployeesCnt>
      <ContinuationTotalOfficeCnt>0</ContinuationTotalOfficeCnt>
      <ContinuationTotalEmployeeCnt>0</ContinuationTotalEmployeeCnt>
      <TotalOfficeCnt>0</TotalOfficeCnt>
      <TotalEmployeeCnt>0</TotalEmployeeCnt>
      <SubtotalSpentAmt>0</SubtotalSpentAmt>
      <ContinuationSpentAmt>0</ContinuationSpentAmt>
      <TotalSpentAmt>0</TotalSpentAmt>
      <TransferToForeignCorpInd>0</TransferToForeignCorpInd>
      <InterestInForeignTrustInd>0</InterestInForeignTrustInd>
      <ForeignCorpOwnershipInd>1</ForeignCorpOwnershipInd>
      <PassiveForeignInvestmestCoInd>0</PassiveForeignInvestmestCoInd>
      <ForeignPartnershipInd>0</ForeignPartnershipInd>
      <BoycottCountriesInd>0</BoycottCountriesInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART III ACCOUNTING METHOD:</FormAndLineReferenceDesc>
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      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>GENERAL THORACIC SURGICAL CLUB</BusinessNameLine1Txt>
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          <CityNm>CHICAGO</CityNm>
          <StateAbbreviationCd>IL</StateAbbreviationCd>
          <ZIPCd>60611</ZIPCd>
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      <RecipientTable>
        <RecipientBusinessName>
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        <USAddress>
          <AddressLine1Txt>633 N SAINT CLAIRE STREET</AddressLine1Txt>
          <CityNm>CHICAGO</CityNm>
          <StateAbbreviationCd>IL</StateAbbreviationCd>
          <ZIPCd>60611</ZIPCd>
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        <IRCSectionDesc>501(C)(3)</IRCSectionDesc>
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      <RecipientTable>
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          <CityNm>BEVERLY</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
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      <RecipientTable>
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      <Total501c3OrgCnt>2</Total501c3OrgCnt>
      <TotalOtherOrgCnt>2</TotalOtherOrgCnt>
      <GrantsOtherAsstToIndivInUSGrp>
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        <FormAndLineReferenceDesc>PART I, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>GRANTS AND OTHER ASSISTANCE AMOUNTS ARE APPROVED THROUGHOUT THE YEAR ACCORDING TO STS POLICY. STAFF WILL PROCESS THE VARIOUS GRANTS ACCORDING TO THESE AUTHORIZED DIRECTIVES AND WILL FOLLOW UP WITH THE RECIPIENTS ACCORDINGLY. LOOKING TO THE FUTURE SCHOLARSHIP RECIPIENTS ARE REQUIRED TO SUBMIT EXPENSE REPORTS FOR TRAVEL EXPENSES. MAX REIMBURSEMENT ALLOWED IS $500. STS COVERS THEIR LODGING EXPENSES.</ExplanationTxt>
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      <Form990OfOtherOrganizationsInd>X</Form990OfOtherOrganizationsInd>
      <CompensationSurveyInd>X</CompensationSurveyInd>
      <BoardOrCommitteeApprovalInd>X</BoardOrCommitteeApprovalInd>
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        <DeferredCompensationFlngOrgAmt>70450</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
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        <TotalCompensationFilingOrgAmt>424581</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
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        <TotalCompensationFilingOrgAmt>393318</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
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        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>NATALIE BODEN</PersonNm>
        <TitleTxt>DIR. OF MARKETING &amp; COMMUNICATION</TitleTxt>
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        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>267918</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>DONNA MCDONALD</PersonNm>
        <TitleTxt>DIRECTOR OF QUALITY</TitleTxt>
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        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
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      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>COURTNEY YOHE</PersonNm>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>SCOTT BRADBURY</PersonNm>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>COLLEEN DONOHOE</PersonNm>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>JANE HAN</PersonNm>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>BETH WINER</PersonNm>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>THERESA LOPEZ</PersonNm>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>KEVIN GILMARTIN</PersonNm>
        <TitleTxt>SENIOR MANAGER - IT</TitleTxt>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>ROBERT WYNBRANDT</PersonNm>
        <TitleTxt>FORMER OFFICER</TitleTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINES 4A-B</FormAndLineReferenceDesc>
        <ExplanationTxt>LINE 4A: ROBERT WYNBRANDT, FORMER EXECUTIVE DIRECTOR AND GENERAL COUNSEL, RECEIVED A SEVERANCE PAYMENT DURING 2020 OF $135,000. LINE 4B: EXECUTIVE DIRECTOR, ELAINE WEISS, PARTICIPATES IN A 457(F) PLAN. THERE WERE NO DISTRIBUTIONS FROM THE PLAN IN 2020.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleJ>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 4</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION AMENDED ITS BYLAWS DURING 2020. THE FOLLOWING ITEMS WERE REVISED: ARTICLE III, SECTION 2 AND 5 - APPROVAL OF APPLICATIONS SHALL NOW BE THE RESPONSIBILITY OF THE EXECUTIVE COMMITTEE. ARTICLE III, SECTION 7 - PRE-CANDIDATE MEMBERS ENROLLED IN AN APPROPRIATELY RECOGNIZED EDUCATIONAL PROGRAM ARE ALLOWED TO REMAIN PRE-CANDIDATE MEMBERS FOR A MAXIMUM OF ONE YEAR FOLLOWING COMPLETION OF EDUCATION. ARTICLE V, SECTION 3 - A TOTAL OF 8 DIRECTORS-AT-LARGE SHALL BE ELECTED FOR STAGGERED TERMS OF 3 YEARS EACH. AT LEAST 2 DIRECTORS-AT-LARGE SHALL BE ELECTED ON AN ANNUAL BASIS, EXCEPT THAT THE BOARD OF DIRECTORS MAY SHORTEN THE TERM OF A DIRECTOR-AT-LARGE TO 2 YEARS OR 1 AS NECESSARY TO STAGGER TERMS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 6</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION IS A MEMBERSHIP SOCIETY AND HAS OVER 7,500 MEMBERS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 7A</FormAndLineReferenceDesc>
        <ExplanationTxt>MEMBERS OF THE GOVERNING BODY ARE ELECTED BY THE MEMBERSHIP AT ITS ANNUAL MEETING PURSUANT TO THE ORGANIZATION'S BYLAWS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 7B</FormAndLineReferenceDesc>
        <ExplanationTxt>CERTAIN DECISIONS OF THE GOVERNING BODY (E.G., REGARDING DUES AND BYLAWS AMENDMENTS) ARE SUBJECT TO APPROVAL BY MEMBERS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION RETAINED THE SERVICES OF AN INDEPENDENT CPA FIRM TO PREPARE ITS FORM 990. MANAGEMENT THEN REVIEWED THE COMPLETED FORM 990 AND PROVIDED A FULL COPY TO ALL VOTING MEMBERS OF THE ORGANIZATION'S BOARD OF DIRECTORS (I.E., THE GOVERNING BODY). THE VOTING MEMBERS OF THE GOVERNING BODY WERE GIVEN A REASONABLE AMOUNT OF TIME TO REVIEW THE RETURN AND ASK ANY QUESTIONS DIRECTLY TO MANAGEMENT OR SENIOR CORPORATE OFFICERS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>OFFICERS, DIRECTORS, KEY EMPLOYEES, AND OTHERS ARE ANNUALLY REQUIRED TO COMPLETE A CONFLICT OF INTEREST DISCLOSURE STATEMENT AS A REQUIREMENT OF SERVICE. THE STATEMENT ON STS DISCLOSURE POLICY AND GUIDELINES REGARDING CONFLICTS OF INTEREST IS READ AT THE BEGINNING OF EVERY BOARD OF DIRECTORS, COMMITTEE, COUNCIL OPERATING BOARD, AND WORKFORCE MEETING. IF A CONFLICT OF INTEREST OR THE APPEARANCE OF A CONFLICT OF INTEREST EXISTS, THE PERSON WITH SUCH A CONFLICT MUST DISCLOSE THE RELATIONSHIP AND REFRAIN FROM VOTING ON THE MATTER; IF THE NATURE OF THE RELATIONSHIP SUGGESTS THAT HIS OR HER PRESENCE MAY BE DETRIMENTAL TO THE DISCUSSION, HE OR SHE MUST EXIT THE MEETING. THE MEETING CHAIR MAKES THE FINAL DETERMINATION AS TO THE APPROPRIATE ACTION.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 15</FormAndLineReferenceDesc>
        <ExplanationTxt>15A. THE SOCIETY ENGAGES AN INDEPENDENT COMPENSATION CONSULTANT PERIODICALLY, USUALLY EVERY TWO OR THREE YEARS, TO PERFORM A MARKET SALARY ANALYSIS FOR THE CEO/EXECUTIVE DIRECTOR POSITION. THIS INFORMATION IS SHARED WITH THE EXECUTIVE COMMITTEE WHICH DETERMINES THE NEW LEVEL OF COMPENSATION AND COMMUNICATES THE SALARY INFORMATION TO THE CEO/EXECUTIVE DIRECTOR AND TO THE DIRECTOR OF FINANCE &amp; ADMINISTRATION FOR IMPLEMENTATION. AN INDEPENDENT COMPENSATION CONSULTANT WAS UTILIZED AS A PART OF THIS PROCESS IN 2018. AN ADJUSTMENT IS MADE TO THE CEO/EXECUTIVE DIRECTOR'S SALARY ANNUALLY FOR A MERIT INCREASE, WHICH IS BASED ON A FORMAL PERFORMANCE EVALUATION. 15B. COMPENSATION - THE SOCIETY ENGAGES AN INDEPENDENT COMPENSATION CONSULTANT PERIODICALLY, USUALLY EVERY TWO OR THREE YEARS, TO PERFORM A MARKET SALARY ANALYSIS FOR STS POSITIONS. THE CONSULTANT MEETS WITH THE CEO/EXECUTIVE DIRECTOR AND EACH STAFF DIRECTOR TO ASCERTAIN INFORMATION RELEVANT TO EACH POSITION. THE CONSULTANT ALSO REVIEWS EACH OF THE POSITION DESCRIPTIONS, DETERMINES APPROPRIATE MATCHES FROM COMPENSATION MARKET SURVEYS, E.G., TOWERS WATSON, PRM, ASSOCIATION FORUM, AND ASAE, FOR COMPARABLE POSITIONS AT SIMILARLY SITUATED ORGANIZATIONS, AND COMPILES AND ANALYZES THIS MARKET DATA FOR EACH POSITION. THE CONSULTANT MEETS WITH THE CEO/EXECUTIVE DIRECTOR AND THE DIRECTOR OF FINANCE &amp; ADMINISTRATION TO REVIEW THE COMPENSATION ANALYSIS, AND MAKES ADJUSTMENTS TO THE ANALYSIS, AS APPROPRIATE. UTILIZING THE CONSULTANT'S ANALYSIS, THE CEO/EXECUTIVE DIRECTOR MAKES SALARY ADJUSTMENTS. AN INDEPENDENT COMPENSATION CONSULTANT WAS UTILIZED AS PART OF THIS PROCESS IN 2018. ADJUSTMENTS ARE MADE TO SALARIES ANNUALLY FOR MERIT INCREASES, WHICH ARE BASED ON FORMAL PERFORMANCE EVALUATIONS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION'S BYLAWS AND KEY GOVERNANCE POLICIES ARE AVAILABLE TO THE PUBLIC ON THE STS WEBSITE. OTHER GOVERNING DOCUMENTS, AS WELL AS THE ORGANIZATION'S CONFLICT OF INTEREST POLICY AND FINANCIAL STATEMENTS ARE MADE AVAILABLE TO THE PUBLIC UPON WRITTEN REQUEST TO THE ORGANIZATION.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART IX, LINE 11G</FormAndLineReferenceDesc>
        <ExplanationTxt>CONSULTANT EXPENSES 1,116,339. TEMPORARY SERVICES FROM SALARIES 234,812. VOLUNTEER STIPENDS FROM SALARIES 300,000. PAYROLL AND HR FEES 80,868. DATA WAREHOUSING AND ANALYSIS 5,728,552. WEB-BASED EXPENSES 25,225. VIDEO PRODUCTION 36,005. CTS NET FEES 42,700. MISCELLANEOUS 18,372. TVT EXPENSE 2,526,059.</ExplanationTxt>
      </SupplementalInformationDetail>
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          <AddressLine1Txt>633 N ST CLAIR ST SUITE 2100</AddressLine1Txt>
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      <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>1</PerformOfServicesForOthOrgInd>
      <PerformOfServicesByOtherOrgInd>0</PerformOfServicesByOtherOrgInd>
      <SharingOfFacilitiesInd>1</SharingOfFacilitiesInd>
      <PaidEmployeesSharingInd>1</PaidEmployeesSharingInd>
      <ReimbursementPaidToOtherOrgInd>0</ReimbursementPaidToOtherOrgInd>
      <ReimbursementPaidByOtherOrgInd>1</ReimbursementPaidByOtherOrgInd>
      <TransferToOtherOrgInd>1</TransferToOtherOrgInd>
      <TransferFromOtherOrgInd>0</TransferFromOtherOrgInd>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>THE THORACIC SURGERY FOUNDATION</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>B</TransactionTypeTxt>
        <InvolvedAmt>818231</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>CASH PAID</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>THE THORACIC SURGERY FOUNDATION</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>L</TransactionTypeTxt>
        <InvolvedAmt>284000</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>ACTUAL COST</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
    </IRS990ScheduleR>
  </ReturnData>
</Return>
