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        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>A BOBAN</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>J CONNORS</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>3000</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>M CUSHMAN</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>41250</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>J DOUKETIS</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>F NI ANIE</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>500</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>JOOST MEIJERS</PersonNm>
        <TitleTxt>EX-OFFICIO D</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>500</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>JEFFREY WELTZ</PersonNm>
        <TitleTxt>EX-OFFICIO D</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>500</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>THOMAS REISER</PersonNm>
        <TitleTxt>EXECUTIVE DI</TitleTxt>
        <AverageHoursPerWeekRt>40.00</AverageHoursPerWeekRt>
        <KeyEmployeeInd>X</KeyEmployeeInd>
        <ReportableCompFromOrgAmt>355495</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>47980</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>LISA ASTORGA</PersonNm>
        <TitleTxt>EMPLOYEE</TitleTxt>
        <AverageHoursPerWeekRt>40.00</AverageHoursPerWeekRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>189104</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>19112</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>LOUISE BANNON</PersonNm>
        <TitleTxt>EMPLOYEE</TitleTxt>
        <AverageHoursPerWeekRt>40.00</AverageHoursPerWeekRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>179760</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>27851</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>ROBIN BOETCHER</PersonNm>
        <TitleTxt>EMPLOYEE</TitleTxt>
        <AverageHoursPerWeekRt>40.00</AverageHoursPerWeekRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>180540</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>27929</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>JEFFREY CAIOLA</PersonNm>
        <TitleTxt>DIR FINANCE</TitleTxt>
        <AverageHoursPerWeekRt>40.00</AverageHoursPerWeekRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>180706</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>32094</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>ROBERT CLARK</PersonNm>
        <TitleTxt>EMPLOYEE</TitleTxt>
        <AverageHoursPerWeekRt>40.00</AverageHoursPerWeekRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>167671</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>37268</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <TotalReportableCompFromOrgAmt>1253276</TotalReportableCompFromOrgAmt>
      <TotalOtherCompensationAmt>245984</TotalOtherCompensationAmt>
      <IndivRcvdGreaterThan100KCnt>6</IndivRcvdGreaterThan100KCnt>
      <FormerOfcrEmployeesListedInd>false</FormerOfcrEmployeesListedInd>
      <TotalCompGreaterThan150KInd>true</TotalCompGreaterThan150KInd>
      <CompensationFromOtherSrcsInd>false</CompensationFromOtherSrcsInd>
      <MembershipDuesAmt>726147</MembershipDuesAmt>
      <AllOtherContributionsAmt>1684497</AllOtherContributionsAmt>
      <TotalContributionsAmt>2410644</TotalContributionsAmt>
      <ProgramServiceRevenueGrp>
        <Desc>EXHIBITION INCOME</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>3731850</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>3731850</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>REGISTRATION FEES</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>3072695</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>3072695</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>OTHER INCOME</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>1503246</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>1503246</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>PUBLICATION INCOME</Desc>
        <BusinessCd>511120</BusinessCd>
        <TotalRevenueColumnAmt>1202077</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>1202077</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <TotalProgramServiceRevenueAmt>9509868</TotalProgramServiceRevenueAmt>
      <InvestmentIncomeGrp>
        <TotalRevenueColumnAmt>435155</TotalRevenueColumnAmt>
        <ExclusionAmt>435155</ExclusionAmt>
      </InvestmentIncomeGrp>
      <GrossAmountSalesAssetsGrp>
        <SecuritiesAmt>13484056</SecuritiesAmt>
      </GrossAmountSalesAssetsGrp>
      <LessCostOthBasisSalesExpnssGrp>
        <SecuritiesAmt>13308597</SecuritiesAmt>
      </LessCostOthBasisSalesExpnssGrp>
      <GainOrLossGrp>
        <SecuritiesAmt>175459</SecuritiesAmt>
      </GainOrLossGrp>
      <NetGainOrLossInvestmentsGrp>
        <TotalRevenueColumnAmt>175459</TotalRevenueColumnAmt>
        <ExclusionAmt>175459</ExclusionAmt>
      </NetGainOrLossInvestmentsGrp>
      <OtherRevenueMiscGrp>
        <Desc>GAIN(LOSS) FOREIGN CURRENCY</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>23825</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>23825</RelatedOrExemptFuncIncomeAmt>
      </OtherRevenueMiscGrp>
      <OtherRevenueTotalAmt>23825</OtherRevenueTotalAmt>
      <TotalRevenueGrp>
        <TotalRevenueColumnAmt>12554951</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>9533693</RelatedOrExemptFuncIncomeAmt>
        <ExclusionAmt>610614</ExclusionAmt>
      </TotalRevenueGrp>
      <InfoInScheduleOPartIXInd>X</InfoInScheduleOPartIXInd>
      <GrantsToDomesticOrgsGrp>
        <TotalAmt>100000</TotalAmt>
        <ProgramServicesAmt>100000</ProgramServicesAmt>
      </GrantsToDomesticOrgsGrp>
      <GrantsToDomesticIndividualsGrp>
        <TotalAmt>3366</TotalAmt>
        <ProgramServicesAmt>3366</ProgramServicesAmt>
      </GrantsToDomesticIndividualsGrp>
      <ForeignGrantsGrp>
        <TotalAmt>226590</TotalAmt>
        <ProgramServicesAmt>226590</ProgramServicesAmt>
      </ForeignGrantsGrp>
      <CompCurrentOfcrDirectorsGrp>
        <TotalAmt>355495</TotalAmt>
        <ProgramServicesAmt>205012</ProgramServicesAmt>
        <ManagementAndGeneralAmt>127940</ManagementAndGeneralAmt>
        <FundraisingAmt>22543</FundraisingAmt>
      </CompCurrentOfcrDirectorsGrp>
      <OtherSalariesAndWagesGrp>
        <TotalAmt>3201197</TotalAmt>
        <ProgramServicesAmt>1846105</ProgramServicesAmt>
        <ManagementAndGeneralAmt>1152090</ManagementAndGeneralAmt>
        <FundraisingAmt>203002</FundraisingAmt>
      </OtherSalariesAndWagesGrp>
      <PensionPlanContributionsGrp>
        <TotalAmt>359503</TotalAmt>
        <ProgramServicesAmt>207322</ProgramServicesAmt>
        <ManagementAndGeneralAmt>129383</ManagementAndGeneralAmt>
        <FundraisingAmt>22798</FundraisingAmt>
      </PensionPlanContributionsGrp>
      <OtherEmployeeBenefitsGrp>
        <TotalAmt>538803</TotalAmt>
        <ProgramServicesAmt>310724</ProgramServicesAmt>
        <ManagementAndGeneralAmt>193912</ManagementAndGeneralAmt>
        <FundraisingAmt>34167</FundraisingAmt>
      </OtherEmployeeBenefitsGrp>
      <PayrollTaxesGrp>
        <TotalAmt>276802</TotalAmt>
        <ProgramServicesAmt>159630</ProgramServicesAmt>
        <ManagementAndGeneralAmt>99619</ManagementAndGeneralAmt>
        <FundraisingAmt>17553</FundraisingAmt>
      </PayrollTaxesGrp>
      <FeesForServicesLegalGrp>
        <TotalAmt>51809</TotalAmt>
        <ProgramServicesAmt>25742</ProgramServicesAmt>
        <ManagementAndGeneralAmt>23757</ManagementAndGeneralAmt>
        <FundraisingAmt>2310</FundraisingAmt>
      </FeesForServicesLegalGrp>
      <FeesForServicesAccountingGrp>
        <TotalAmt>12600</TotalAmt>
        <ManagementAndGeneralAmt>12600</ManagementAndGeneralAmt>
      </FeesForServicesAccountingGrp>
      <FeesForSrvcInvstMgmntFeesGrp>
        <TotalAmt>192493</TotalAmt>
        <ManagementAndGeneralAmt>192493</ManagementAndGeneralAmt>
      </FeesForSrvcInvstMgmntFeesGrp>
      <FeesForServicesOtherGrp>
        <TotalAmt>2147512</TotalAmt>
        <ProgramServicesAmt>1694458</ProgramServicesAmt>
        <ManagementAndGeneralAmt>446131</ManagementAndGeneralAmt>
        <FundraisingAmt>6923</FundraisingAmt>
      </FeesForServicesOtherGrp>
      <OfficeExpensesGrp>
        <TotalAmt>69623</TotalAmt>
        <ProgramServicesAmt>34253</ProgramServicesAmt>
        <ManagementAndGeneralAmt>35268</ManagementAndGeneralAmt>
        <FundraisingAmt>102</FundraisingAmt>
      </OfficeExpensesGrp>
      <OccupancyGrp>
        <TotalAmt>32616</TotalAmt>
        <ManagementAndGeneralAmt>32616</ManagementAndGeneralAmt>
      </OccupancyGrp>
      <TravelGrp>
        <TotalAmt>822150</TotalAmt>
        <ProgramServicesAmt>303616</ProgramServicesAmt>
        <ManagementAndGeneralAmt>496622</ManagementAndGeneralAmt>
        <FundraisingAmt>21912</FundraisingAmt>
      </TravelGrp>
      <ConferencesMeetingsGrp>
        <TotalAmt>4141440</TotalAmt>
        <ProgramServicesAmt>4140680</ProgramServicesAmt>
        <ManagementAndGeneralAmt>760</ManagementAndGeneralAmt>
      </ConferencesMeetingsGrp>
      <DepreciationDepletionGrp>
        <TotalAmt>57251</TotalAmt>
        <ManagementAndGeneralAmt>57251</ManagementAndGeneralAmt>
      </DepreciationDepletionGrp>
      <OtherExpensesGrp>
        <Desc>OTHER OPERATING EXPENSES</Desc>
        <TotalAmt>424475</TotalAmt>
        <ProgramServicesAmt>204436</ProgramServicesAmt>
        <ManagementAndGeneralAmt>217771</ManagementAndGeneralAmt>
        <FundraisingAmt>2268</FundraisingAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>HONORARIA</Desc>
        <TotalAmt>270616</TotalAmt>
        <ProgramServicesAmt>270616</ProgramServicesAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>BANK CHARGES AND FEES</Desc>
        <TotalAmt>44822</TotalAmt>
        <ProgramServicesAmt>31200</ProgramServicesAmt>
        <ManagementAndGeneralAmt>13611</ManagementAndGeneralAmt>
        <FundraisingAmt>11</FundraisingAmt>
      </OtherExpensesGrp>
      <TotalFunctionalExpensesGrp>
        <TotalAmt>13329163</TotalAmt>
        <ProgramServicesAmt>9763750</ProgramServicesAmt>
        <ManagementAndGeneralAmt>3231824</ManagementAndGeneralAmt>
        <FundraisingAmt>333589</FundraisingAmt>
      </TotalFunctionalExpensesGrp>
      <CashNonInterestBearingGrp>
        <BOYAmt>1464873</BOYAmt>
        <EOYAmt>1007302</EOYAmt>
      </CashNonInterestBearingGrp>
      <SavingsAndTempCashInvstGrp>
        <BOYAmt>606484</BOYAmt>
        <EOYAmt>652394</EOYAmt>
      </SavingsAndTempCashInvstGrp>
      <AccountsReceivableGrp>
        <BOYAmt>3339794</BOYAmt>
        <EOYAmt>1593031</EOYAmt>
      </AccountsReceivableGrp>
      <PrepaidExpensesDefrdChargesGrp>
        <BOYAmt>521237</BOYAmt>
        <EOYAmt>2131410</EOYAmt>
      </PrepaidExpensesDefrdChargesGrp>
      <LandBldgEquipCostOrOtherBssAmt>1446103</LandBldgEquipCostOrOtherBssAmt>
      <LandBldgEquipAccumDeprecAmt>893680</LandBldgEquipAccumDeprecAmt>
      <LandBldgEquipBasisNetGrp>
        <BOYAmt>601151</BOYAmt>
        <EOYAmt>552423</EOYAmt>
      </LandBldgEquipBasisNetGrp>
      <InvestmentsPubTradedSecGrp>
        <BOYAmt>14534008</BOYAmt>
        <EOYAmt>14290699</EOYAmt>
      </InvestmentsPubTradedSecGrp>
      <OtherAssetsTotalGrp>
        <BOYAmt>127827</BOYAmt>
        <EOYAmt>390462</EOYAmt>
      </OtherAssetsTotalGrp>
      <TotalAssetsGrp>
        <BOYAmt>21195374</BOYAmt>
        <EOYAmt>20617721</EOYAmt>
      </TotalAssetsGrp>
      <AccountsPayableAccrExpnssGrp>
        <BOYAmt>1426900</BOYAmt>
        <EOYAmt>2333630</EOYAmt>
      </AccountsPayableAccrExpnssGrp>
      <DeferredRevenueGrp>
        <BOYAmt>4257872</BOYAmt>
        <EOYAmt>2174708</EOYAmt>
      </DeferredRevenueGrp>
      <TotalLiabilitiesGrp>
        <BOYAmt>5684772</BOYAmt>
        <EOYAmt>4508338</EOYAmt>
      </TotalLiabilitiesGrp>
      <OrganizationFollowsFASB117Ind>X</OrganizationFollowsFASB117Ind>
      <NoDonorRestrictionNetAssetsGrp>
        <BOYAmt>15470930</BOYAmt>
        <EOYAmt>16082621</EOYAmt>
      </NoDonorRestrictionNetAssetsGrp>
      <DonorRestrictionNetAssetsGrp>
        <BOYAmt>39672</BOYAmt>
        <EOYAmt>26762</EOYAmt>
      </DonorRestrictionNetAssetsGrp>
      <TotalNetAssetsFundBalanceGrp>
        <BOYAmt>15510602</BOYAmt>
        <EOYAmt>16109383</EOYAmt>
      </TotalNetAssetsFundBalanceGrp>
      <TotLiabNetAssetsFundBalanceGrp>
        <BOYAmt>21195374</BOYAmt>
        <EOYAmt>20617721</EOYAmt>
      </TotLiabNetAssetsFundBalanceGrp>
      <ReconcilationRevenueExpnssAmt>-774212</ReconcilationRevenueExpnssAmt>
      <NetUnrlzdGainsLossesInvstAmt>1372993</NetUnrlzdGainsLossesInvstAmt>
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>true</AccountantCompileOrReviewInd>
      <AcctCompileOrReviewBasisGrp>
        <SeparateBasisFinclStmtInd>X</SeparateBasisFinclStmtInd>
      </AcctCompileOrReviewBasisGrp>
      <FSAuditedInd>false</FSAuditedInd>
      <AuditCommitteeInd>true</AuditCommitteeInd>
      <FederalGrantAuditRequiredInd>false</FederalGrantAuditRequiredInd>
    </IRS990>
    <IRS990ScheduleA documentId="RetDoc7">
      <PubliclySupportedOrg509a2Ind>X</PubliclySupportedOrg509a2Ind>
      <GiftsGrantsContrisRcvd509Grp>
        <CurrentTaxYearMinus4YearsAmt>2829699</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>3354852</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>2773748</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>2617283</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>2410644</CurrentTaxYearAmt>
        <TotalAmt>13986226</TotalAmt>
      </GiftsGrantsContrisRcvd509Grp>
      <GrossReceiptsAdmissionsGrp>
        <CurrentTaxYearMinus4YearsAmt>8903397</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>3730523</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>5903922</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>9217927</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>9533693</CurrentTaxYearAmt>
        <TotalAmt>37289462</TotalAmt>
      </GrossReceiptsAdmissionsGrp>
      <GrossReceiptsNonUnrltBusGrp>
        <CurrentTaxYearMinus3YearsAmt>1869024</CurrentTaxYearMinus3YearsAmt>
        <TotalAmt>1869024</TotalAmt>
      </GrossReceiptsNonUnrltBusGrp>
      <Total509Grp>
        <CurrentTaxYearMinus4YearsAmt>11733096</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>8954399</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>8677670</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>11835210</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>11944337</CurrentTaxYearAmt>
        <TotalAmt>53144712</TotalAmt>
      </Total509Grp>
      <SubstantialContributorsAmtGrp>
        <CurrentTaxYearMinus4YearsAmt>1444010</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>2050652</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>1747487</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>1432380</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>1659073</CurrentTaxYearAmt>
        <TotalAmt>8333602</TotalAmt>
      </SubstantialContributorsAmtGrp>
      <SubstAndDsqlfyPrsnsTotGrp>
        <CurrentTaxYearMinus4YearsAmt>1444010</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>2050652</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>1747487</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>1432380</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>1659073</CurrentTaxYearAmt>
        <TotalAmt>8333602</TotalAmt>
      </SubstAndDsqlfyPrsnsTotGrp>
      <PublicSupportTotal509Amt>44811110</PublicSupportTotal509Amt>
      <GrossInvestmentIncome509Grp>
        <CurrentTaxYearMinus4YearsAmt>406341</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>323160</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>335927</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>343952</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>435155</CurrentTaxYearAmt>
        <TotalAmt>1844535</TotalAmt>
      </GrossInvestmentIncome509Grp>
      <InvestmentIncomeAndUBTIGrp>
        <CurrentTaxYearMinus4YearsAmt>406341</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>323160</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>335927</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>343952</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>435155</CurrentTaxYearAmt>
        <TotalAmt>1844535</TotalAmt>
      </InvestmentIncomeAndUBTIGrp>
      <TotalSupportCalendarYearGrp>
        <CurrentTaxYearMinus4YearsAmt>12139437</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>9277559</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>9013597</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>12179162</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>12379492</CurrentTaxYearAmt>
        <TotalAmt>54989247</TotalAmt>
      </TotalSupportCalendarYearGrp>
      <PublicSupportCY509Pct>0.81490</PublicSupportCY509Pct>
      <PublicSupportPY509Pct>0.80680</PublicSupportPY509Pct>
      <InvestmentIncomeCYPct>0.03000</InvestmentIncomeCYPct>
      <InvestmentIncomePYPct>0.04000</InvestmentIncomePYPct>
      <ThirtyThrPctSuprtTestsCY509Ind>X</ThirtyThrPctSuprtTestsCY509Ind>
    </IRS990ScheduleA>
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      <FootnoteTextInd>X</FootnoteTextInd>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>SCHEDULE D, PAGE 2, PART V, LINE 4</FormAndLineReferenceDesc>
        <ExplanationTxt>THE BOARD DESIGNATED ENDOWMENTS WERE ESTABLISHED TO FUND SUPPORT OF A SPEAKER HONORARIA FOR LECTURES AT THE CONGRESS, TO FUND AWARDS GIVEN BY THE JTH EDITORS TO YOUNG INVESTIGATORS FOR BEST ARTICLE AND TO FUND SSC SUBCOMMITTEE GRANTS. THE ENDOWMENT FUNDS WERE COMLETELY SPENT IN FISCAL YEAR 2021.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>SCHEDULE D, PAGE 3, PART X</FormAndLineReferenceDesc>
        <ExplanationTxt>FOR THE YEAR ENDED DECEMBER 31, 2023, THE SOCIETY HAS DOCUMENTED ITS CONSIDERATION OF FASB ASC 740-10, INCOME TAXES, THAT PROVIDES GUIDANCE FOR REPORTING UNCERTAINTY IN INCOME TAXES AND HAS DETERMINED THAT NO MATERIAL UNCERTAIN TAX POSITIONS QUALIFY FOR EITHER RECOGNITION OR DISCLOSURE IN THE FINANCIAL STATEMENTS. THE SOCIETY IS NOT CURRENTLY UNDER EXAMINATION BY ANY TAXING JURISDICTIONS. THE SOCIETYS FEDERAL AND STATE TAX RETURNS ARE GENERALLY OPEN FOR EXAMINATION FOR THREE YEARS FOLLOWING THE DATE FILED.</ExplanationTxt>
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    <IRS990ScheduleF documentId="RetDoc8">
      <GrantRecordsMaintainedInd>true</GrantRecordsMaintainedInd>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>EAST ASIA AND THE PACIFIC</RegionTxt>
        <TypeOfActivitiesConductedTxt>FELLOWSHIP (1)</TypeOfActivitiesConductedTxt>
        <SpecificServicesProvidedTxt>SEE PART V</SpecificServicesProvidedTxt>
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      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>EAST ASIA AND THE PACIFIC</RegionTxt>
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        <SpecificServicesProvidedTxt>SEE PART V</SpecificServicesProvidedTxt>
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      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>EUROPE</RegionTxt>
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        <SpecificServicesProvidedTxt>SEE PART V</SpecificServicesProvidedTxt>
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      <AccountActivitiesOutsideUSGrp>
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        <SpecificServicesProvidedTxt>SEE PART V</SpecificServicesProvidedTxt>
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      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>EUROPE</RegionTxt>
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        <SpecificServicesProvidedTxt>SEE PART V</SpecificServicesProvidedTxt>
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      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>SOUTH AMERICA</RegionTxt>
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        <SpecificServicesProvidedTxt>SEE PART V</SpecificServicesProvidedTxt>
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      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>NORTH AMERICA</RegionTxt>
        <TypeOfActivitiesConductedTxt>CONG TRAVEL (1)</TypeOfActivitiesConductedTxt>
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      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>AFRICA</RegionTxt>
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        <SpecificServicesProvidedTxt>SEE PART V</SpecificServicesProvidedTxt>
        <RegionTotalExpendituresAmt>10131</RegionTotalExpendituresAmt>
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        <MannerOfCashDisbursementTxt>WIRE TRANSFER</MannerOfCashDisbursementTxt>
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      <GrantsToOrgOutsideUSGrp>
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        <MannerOfCashDisbursementTxt>WIRE TRANSFER</MannerOfCashDisbursementTxt>
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      <GrantsToOrgOutsideUSGrp>
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        <PurposeOfGrantTxt>SEE PART V</PurposeOfGrantTxt>
        <CashGrantAmt>50000</CashGrantAmt>
        <MannerOfCashDisbursementTxt>WIRE TRANSFER</MannerOfCashDisbursementTxt>
        <ValuationMethodUsedDesc>N/A</ValuationMethodUsedDesc>
      </GrantsToOrgOutsideUSGrp>
      <GrantsToOrgOutsideUSGrp>
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        <PurposeOfGrantTxt>SEE PART V</PurposeOfGrantTxt>
        <CashGrantAmt>16000</CashGrantAmt>
        <MannerOfCashDisbursementTxt>WIRE TRANSFER</MannerOfCashDisbursementTxt>
        <ValuationMethodUsedDesc>N/A</ValuationMethodUsedDesc>
      </GrantsToOrgOutsideUSGrp>
      <GrantsToOrgOutsideUSGrp>
        <RegionTxt>EUROPE</RegionTxt>
        <PurposeOfGrantTxt>SEE PART V</PurposeOfGrantTxt>
        <CashGrantAmt>10000</CashGrantAmt>
        <MannerOfCashDisbursementTxt>WIRE TRANSFER</MannerOfCashDisbursementTxt>
        <ValuationMethodUsedDesc>N/A</ValuationMethodUsedDesc>
      </GrantsToOrgOutsideUSGrp>
      <GrantsToOrgOutsideUSGrp>
        <RegionTxt>AFRICA</RegionTxt>
        <PurposeOfGrantTxt>SEE PART V</PurposeOfGrantTxt>
        <CashGrantAmt>7136</CashGrantAmt>
        <MannerOfCashDisbursementTxt>WIRE TRANSFER</MannerOfCashDisbursementTxt>
        <ValuationMethodUsedDesc>N/A</ValuationMethodUsedDesc>
      </GrantsToOrgOutsideUSGrp>
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        <MannerOfCashDisbursementTxt>WIRE TRANSFER</MannerOfCashDisbursementTxt>
        <ValuationMethodUsedDesc>N/A</ValuationMethodUsedDesc>
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      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>FELLOWSHIP STIPEND, TRAVE</TypeOfAssistanceTxt>
        <RegionTxt>SOUTH AMERICA</RegionTxt>
        <RecipientCnt>2</RecipientCnt>
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        <MannerOfCashDisbursementTxt>WIRE TRANSFER</MannerOfCashDisbursementTxt>
        <ValuationMethodUsedDesc>N/A</ValuationMethodUsedDesc>
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      <ForeignIndividualsGrantsGrp>
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        <ValuationMethodUsedDesc>N/A</ValuationMethodUsedDesc>
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      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>JTH EDITOR TRAVEL GRANT</TypeOfAssistanceTxt>
        <RegionTxt>NORTH AMERICA</RegionTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>2000</CashGrantAmt>
        <MannerOfCashDisbursementTxt>WIRE TRANSFER</MannerOfCashDisbursementTxt>
        <ValuationMethodUsedDesc>N/A</ValuationMethodUsedDesc>
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        <FormAndLineReferenceDesc>SCHEDULE F, PAGE 1, PART I, LINE 2</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ISTH REACH-THE-WORLD (RTW) FELLOWSHIP PROGRAM IS TARGETED TO EARLY- CAREER PROFESSIONALS FROM DEVELOPING COUNTRIES (COUNTRIES DESIGNATED AS 'DEVELOPING' BY THE CLASSIFICATION OF THE WORLD BANK). THE OBJECTIVE IS TO PROMOTE ADVANCED KNOWLEDGE AND EXPERTISE IN ONE OR ALL OF THE FOLLOWING AREAS RELATED TO THROMBOSIS AND HEMOSTASIS: MEDICAL CARE; LABORATORY METHODS; AND RESEARCH. ISTH REIMBURSES AIRFARE AND PROVIDES A HOUSING AND PER DIEM STIPEND OF 3,000 PER MONTH TO ALLOW THE FELLOW TO TRAVEL AND TO STUDY AT A HOST INSTITUTE. IN 2023, WE HAD SEVEN RTW FELLOWS: FOUR FROM EUROPE, TWO FROM SOUTH AMERICA, AND ONE FROM NORTH AMERICA. WE HAD EIGHT TRAINING FELLOWS; SEVEN FROM EUROPE AND ONE FROM THE EAST ASIA AND PACIFIC REGION RECEIVING GRANTS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>SCHEDULE F, PAGE 1, PART I, LINE 3</FormAndLineReferenceDesc>
        <ExplanationTxt>EAST ASIA AND THE PACIFIC 6,702 0 EAST ASIA AND THE PACIFIC 4,466 0 EUROPE 28,046 0 EUROPE 28,310 0 EUROPE 12,000 0 EUROPE 105,790 0 SOUTH AMERICA 21,500 0 NORTH AMERICA 7,645 0 NORTH AMERICA 2,000 0 AFRICA 10,131 0</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>SCHEDULE F, PAGE 5, PART V</FormAndLineReferenceDesc>
        <ExplanationTxt>PART I, LINE 3, COLUMN (E) - ACTIVITIES OUTSIDE THE UNITED STATES REGION: EAST ASIA AND THE PACIFIC SPECIFIC TYPES OF SERVICES IN THE REGION: 6,702 IN FUNDING TO SUPPORT ONE FELLOW TRAVELING FROM AUSTRALIA TO BELGIUM. REGION: EUROPE SPECIFIC TYPES OF SERVICES IN THE REGION: 56,356 IN FUNDING IN SUPPORT OF SEVEN FELLOWS; ONE TRAVELING FROM FINLAND TO ANOTHER PART OF FINLAND (13,710), ONE TRAVELING FROM THE NETHERLANDS TO GERMANY (6,146) ONE TRAVELING FROM ARMENIA TO AUSTRIA (7,300) ONE TRAVELING FROM THE UKRAINE TO AUSTRIA (7,300), ONE TRAVELING FROM THE UNITED KINGDOM TO THE UNITED STATES (7,300), ONE TRAVELING FROM BELGIUM TO THE UNITED STATES (7,300), ONE TRAVELING FROM THE UNITED KINGDOM TO THE NETHERLAND (7,300). REGION: SOUTH AMERICA SPECIFIC TYPES OF SERVICES IN THE REGION: 21,500 IN FUNDING IN SUPPORT OF TWO FELLOWS TRAVELING FROM BRAZIL TO THE UNITED STATES, ONE FELLOW AT 14,200, ONE AT 7,300. REGION: NORTH AMERICA SPECIFIC TYPES OF SERVICES IN THE REGION: 7,645 IN FUNDING IN SUPPORT OF ONE FELLOW TRAVELING FROM CANADA TO AUSTRAILIA. PART II, LINE 1, COLUMN (D) - GRANTS TO ORGANIZATIONS OUTSIDE THE UNITED STATES RECIPIENT 1: RESEARCH - 8,190 IN FUNDING TO SUPPORT THE CREATION OF AN INTERNATIONAL REGISTRY ON PREKALIKREIN DEFICIENCY AND KININOGEN DEFICICENCY. RECEIPIENT 2: RESEARCH - 16,600 IN FUNDING TO SUPPORT THE STUDY OF GOLD VARIANTS: DEFINING A HIGH-QUALITY SET OF CLINICALLY RELEVANT DNA VARIANTS. RECIPIENT 3: RESEARCH SUPPORTED COURSE - 50,000 IN FUNDING TO SUPPORT A FUNDAMENTAL RESEARCH WORKSHOP CONCENTRATING ON PLATELET RESEARCH. RECIPIENT 4: RESEARCH - 16,000 IN FUNDING TO SUPPORT THE STUDY OF PLATELET PHYSIOLOGY AND FLOW CYTOMETRY METHODS. RECIPIENT 5: RESEARCH - 10,000 IN FUNDING TO SUPPORT THE PURCHASE OF CONSUMABLES USED IN THE COLLABORATIVE RESEARCH ON RARE BLEEDING DISORDERS. RECIPIENT 6: RESEARCH - 7,136 IN FUNDING TO SUPPORT THE STANDARDIZATION OF SEM ANALYSIS FOR FIBRIN FIBER DEIAMETER MEASUREMENTS.</ExplanationTxt>
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          <BusinessNameLine1Txt>THE UNIVERSITY OF UTAH</BusinessNameLine1Txt>
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          <AddressLine1Txt>201 S PRESIDENTS CIRCLE RM 406</AddressLine1Txt>
          <CityNm>SALT LAKE CITY</CityNm>
          <StateAbbreviationCd>UT</StateAbbreviationCd>
          <ZIPCd>841129020</ZIPCd>
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        <IRCSectionDesc>GOV</IRCSectionDesc>
        <CashGrantAmt>50000</CashGrantAmt>
        <PurposeOfGrantTxt>RSCH - PLATELETS</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>UNIVERSITY OF NORTH CAROLINA</BusinessNameLine1Txt>
          <BusinessNameLine2Txt>AT CHAPEL HILL</BusinessNameLine2Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>125 MACNIDER HALL CAMPUS BOX 7005</AddressLine1Txt>
          <CityNm>CHAPEL HILL</CityNm>
          <StateAbbreviationCd>NC</StateAbbreviationCd>
          <ZIPCd>27599</ZIPCd>
        </USAddress>
        <RecipientEIN>566001393</RecipientEIN>
        <IRCSectionDesc>GOV</IRCSectionDesc>
        <CashGrantAmt>50000</CashGrantAmt>
        <PurposeOfGrantTxt>RSCH - COAG PLATELET</PurposeOfGrantTxt>
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        <PersonNm>LISA ASTORGA</PersonNm>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>LOUISE BANNON</PersonNm>
        <TitleTxt>EMPLOYEE</TitleTxt>
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        <DeferredCompensationFlngOrgAmt>17976</DeferredCompensationFlngOrgAmt>
        <NontaxableBenefitsFilingOrgAmt>9875</NontaxableBenefitsFilingOrgAmt>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>ROBIN BOETCHER</PersonNm>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>ROBERT CLARK</PersonNm>
        <TitleTxt>EMPLOYEE</TitleTxt>
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        <DeferredCompensationFlngOrgAmt>17976</DeferredCompensationFlngOrgAmt>
        <NontaxableBenefitsFilingOrgAmt>19292</NontaxableBenefitsFilingOrgAmt>
        <TotalCompensationFilingOrgAmt>204939</TotalCompensationFilingOrgAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
    </IRS990ScheduleJ>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990 - ORGANIZATION'S MISSION</FormAndLineReferenceDesc>
        <ExplanationTxt>THE INTERNATIONAL SOCIETY ON THROMBOSIS AND HAEMOSTASIS (ISTH) ADVANCES THE UNDERSTANDING, PREVENTION, DIAGNOSIS AND TREATMENT OF CONDITIONS RELATED TO THROMBOSIS AND HEMOSTASIS. THE SOCIETY IS DEDICATED TO TRANSFORMATIVE SCIENTIFIC DISCOVERIES AND CLINICAL PRACTICES, THE DEVELOPMENT OF YOUNG PROFESSIONALS AND THE EDUCATION OF PHYSICIANS, SCIENTISTS AND ALLIED HEALTH PROFESSIONALS WHEREVER THEY MAY LIVE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 2, PART III, LINE 4D</FormAndLineReferenceDesc>
        <ExplanationTxt>PUBLICATION (HARDCOPY AND ONLINE) OF THE JOURNAL OF THROMBOSIS AND HAEMOSTASIS, WHICH SERVES AS AN INTERNATIONAL FORUM FOR ORIGINAL RESEARCH ARTICLES, REPORTS AND RECOMMENDATIONS AND REVIEWS RELATED TO THE IMPORTANT MEDICAL PROBLEMS OF THROMBOSIS, BLEEDING DISORDERS, AND VASCULAR BIOLOGY. TWELVE ISSUES ARE PUBLISHED ANNUALLY. PUBLICATION OF A MONTHLY E-NEWSLETTER PROVIDING INFORMATION ON ISTH EVENTS, EDUCATIONAL ACTIVITIES AND PROGRAMS, NEWS AND INTERVIEWS. COMPLEMENTING THE SOCIETY'S FLAGSHIP JOURNAL, THE JOURNAL OF THROMBOSIS AND HAEMOSTASIS (JTH) IS THE OPEN ACCESS ONLINE JOURNAL, RESEARCH AND PRACTICE IN THROMBOSIS AND HAEMOSTASIS (RPTH). RPTH IS A PLATFORM FOR SCIENCE AND DISCOURSE AMONG RESEARCHERS, CLINICIANS, NURSES, ALLIED HEALTH PROFESSIONALS, AND PATIENTS. PUBLISHED IN PARTNERSHIP WITH ELSEVIER, RPTH IS INTERESTED IN BASIC, CLINICAL, TRANSLATIONAL AND POPULATION OR PUBLIC HEALTH RESEARCH. MEMBER SERVICES PROVIDES BENEFITS TAILORED TO CLINICIANS, RESEARCHERS, NURSES, AND ALLIED HEALTH PROFESSIONALS AT ALL STAGES OF THEIR CAREERS IN BLEEDING AND CLOTTING DISORDERS THROUGH EDUCATION, PROGRAMS AND ACTIVITIES, AND PROFESSIONAL NETWORKING. THE SCIENTIFIC AND STANDARDIZATION COMMITTEE (SSC) IS A PERMANENT COMMITTEE OF THE ISTH AND IS ITS SCIENTIFIC WORKING ARM. CONDUCTED THROUGH SUBCOMMITTEES AND WORKING GROUPS, ITS ACTIVITIES PROMOTE COOPERATION AMONG LEADING INTERNATIONAL SCIENTISTS AND DIRECT THEIR ENERGIES TO PROJECTS THAT GENERATE RELIABLE AND STANDARDIZED CLINICAL AND BASIC SCIENCE TOOLS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART V, LINE 4B</FormAndLineReferenceDesc>
        <ExplanationTxt>GREAT BRITAIN (UK)</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 6</FormAndLineReferenceDesc>
        <ExplanationTxt>THE SOCIETY HAS THE FOLLOWING CLASSES OF MEMBERSHIP: PREMIER, ADVANCED PRACTICE PROVIDER (APP) PHARMACIST, ASSOCIATE, MEDICAL RESIDENT/POST DOC, REACH-THE-WORLD, NURSE, ALLIED HEALTH PROFESSIONAL, STUDENT/TRAINEE, ISTH ACADEMY AND EMERITUS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 7A</FormAndLineReferenceDesc>
        <ExplanationTxt>THE MEMBERS ELECT 15 DIRECTORS TO THE BOARD OF DIRECTORS KNOWN AS THE COUNCIL.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 7B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE BYLAWS MAY BE AMENDED OR REPEALED AND NEW BYLAWS ADOPTED BY THE AFFIRMATIVE VOTE OF TWO-THIRDS OF THE MEMBERS VOTING, EITHER BY MAIL OR IN PERSON AT A REGULAR MEETING OF THE MEMBERSHIP, PROVIDED THE PROPOSED CHANGE HAS BEEN SUBMITTED TO THE MEMBERSHIP AT LEAST THREE (3) MONTHS PRIOR TO THE MEETING.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE EXECUTIVE DIRECTOR AND TREASURER OF THE CORPORATION REVIEW THE FORM 990 WHICH IS THEN MADE AVAILABLE TO THE INTERNATIONAL BOARD OF DIRECTORS PRIOR TO FILING.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>ALL VOTING MEMBERS OF ISTH COUNCIL, ALL CHAIRS OF SSC SCIENTIFIC SUBCOMMITTEES AND SPEAKERS AT ISTH AND SSC MEETINGS ARE REQUIRED TO SUBMIT DISCLOSURE OF INTEREST/LOYALTY STATEMENTS ANNUALLY WHICH ARE KEPT ON FILE AT HEADQUARTERS. ALL MEDICAL JOURNAL AUTHORS SUBMIT COI DISCLOSURES KEPT ON FILE BY THE EDITORIAL OFFICE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 15A</FormAndLineReferenceDesc>
        <ExplanationTxt>COMPENSATION FOR ALL HIGHLY COMPENSATED STAFF IS ROUTINELY REVIEWED AND APPROVED BY EXEC. COMMITTEE OF THE BOARD BASED ON COMPARABLE DATA FOR SIMILAR POSITIONS IN SIMILAR ORGANIZATIONS FOR SIMILAR LONGEVITY, WITH WRITTEN DOCUMENTATION IN PERSONNEL FILE AND PAYROLL RECORDS. PERSONNEL EXPENSES ARE REPORTED ANNUALLY TO THE BOARD AND APPROVED AS PART OF THE BUDGET.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 15B</FormAndLineReferenceDesc>
        <ExplanationTxt>OFFICERS AND DIRECTORS DO NOT RECEIVE COMPENSATION FOR THEIR SERVICES.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 18</FormAndLineReferenceDesc>
        <ExplanationTxt>PRIOR YEARS' 990S ARE AVAILABLE ON GUIDESTAR.ORG AND ON THE IRS WEBSITE (HTTPS://APPS.IRS.GOV/APP/EOS/)</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>THE SOCIETY'S NAME AND ADDRESS OF REGISTERED OFFICE/AGENT ARE AVAILABLE TO THE PUBLIC ON THE NC SECRETARY OF STATE WEB SITE: HTTP://WWW.SECRETARY.STATE.NC.US. THE BYLAWS AND MISSION ARE POSTED ON THE ISTH WEBPAGE. FINANCIAL STATEMENTS, THE ARTICLES OF INCORPORATION, FORM 1023 AND THE CONFLICT OF INTEREST POLICY ARE AVAILABLE BY REQUEST TO ISTH HEADQUARTERS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART IX, LINE 11G</FormAndLineReferenceDesc>
        <ExplanationTxt>TECHNOLOGY SERVICES 87,921 50,678 2,535 HR SERVICES 0 225,386 0 EDITORIAL ASSISTANT 107,264 0 0 EDUCATION 65,487 0 0 GUIDANCE AND GUIDELINES 230,951 0 0 GENE THERAPY 429,109 0 0 SSC 1,585 0 0 SUBCOMMITTEES 21,058 0 0 WORLD THROMBOSIS DAY 360,939 0 0 WORLD HEALTH ORGANIZATION 130,000 0 0 ETHA 125,000 0 0 JTH JOURNAL 63,929 0 0 RPTH JOURNAL 16,815 0 0 FUNDRAISING 0 0 4,388 DIRECTORS AND OFFICERS 0 120,520 0 UBM GENERAL 0 49,547 0 NOVEL THERAPIES IN THROMBOSIS 54,400 0 0 TOTAL 1,694,458 446,131 6,923</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>
