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        <PersonNm>RONALD D ENNIS</PersonNm>
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        <PersonNm>SAMEER KEOLE</PersonNm>
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        <PersonNm>VIVEK S KAVADI HEALTH POLICY</PersonNm>
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        <PersonNm>WENDY WOODWARD</PersonNm>
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        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
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        <PersonNm>CURTILAND DEVILLE</PersonNm>
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        <PersonNm>AUSTIN JSIM</PersonNm>
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        <PersonNm>LAURA I THEVENOT</PersonNm>
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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>TERRY KARRAS</PersonNm>
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        <OfficerInd>X</OfficerInd>
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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
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        <PersonNm>EMILY WILSON</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>DAVE ADLER</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>CHRIS NEUMANN</PersonNm>
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        <PersonNm>ANNA ARNONE</PersonNm>
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        <PersonNm>ANNE HUBBARD</PersonNm>
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        <PersonNm>LAURA GOGAL</PersonNm>
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        <PersonNm>SAMANTHA DAWES</PersonNm>
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        <PersonNm>MICHELE CORDIE</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>KIRSTA SUGGS</PersonNm>
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          <BusinessName>
            <BusinessNameLine1Txt>PROJECTION PRESENTATION TECH</BusinessNameLine1Txt>
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          <USAddress>
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            <CityNm>SPRINGFIELD</CityNm>
            <StateAbbreviationCd>VA</StateAbbreviationCd>
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      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>ELSEVIER INC</BusinessNameLine1Txt>
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          <USAddress>
            <AddressLine1Txt>1600 JOHN F KENNEDY BLVD</AddressLine1Txt>
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            <StateAbbreviationCd>PA</StateAbbreviationCd>
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      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>GLOBAL EXPERIENCE SPECIALISTS INC</BusinessNameLine1Txt>
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          <USAddress>
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      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>CLARITY GROUP INC</BusinessNameLine1Txt>
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        <ContractorAddress>
          <USAddress>
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      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>SAN DIEGO CONVENTION CENTER</BusinessNameLine1Txt>
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          <USAddress>
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            <ZIPCd>92101</ZIPCd>
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      <TotalContributionsAmt>697789</TotalContributionsAmt>
      <ProgramServiceRevenueGrp>
        <Desc>MEETINGS AND EDUCATION</Desc>
        <BusinessCd>900099</BusinessCd>
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        <UnrelatedBusinessRevenueAmt>261848</UnrelatedBusinessRevenueAmt>
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      <ProgramServiceRevenueGrp>
        <Desc>MEMBERSHIP DUES</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>4172097</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>4172097</RelatedOrExemptFuncIncomeAmt>
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      <ProgramServiceRevenueGrp>
        <Desc>PUBLICATIONS</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>1535482</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>1090689</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>444793</UnrelatedBusinessRevenueAmt>
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      <ProgramServiceRevenueGrp>
        <Desc>QUALITY IMPROVEMENT</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>1220223</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>1220223</RelatedOrExemptFuncIncomeAmt>
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      <ProgramServiceRevenueGrp>
        <Desc>PATIENT BROCHURES</Desc>
        <BusinessCd>900099</BusinessCd>
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        <RelatedOrExemptFuncIncomeAmt>70837</RelatedOrExemptFuncIncomeAmt>
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      <TotalOthProgramServiceRevGrp>
        <TotalRevenueColumnAmt>32950</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>32950</RelatedOrExemptFuncIncomeAmt>
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      <TotalProgramServiceRevenueAmt>18414943</TotalProgramServiceRevenueAmt>
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        <TotalRevenueColumnAmt>1115741</TotalRevenueColumnAmt>
        <ExclusionAmt>1115741</ExclusionAmt>
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        <TotalRevenueColumnAmt>2050895</TotalRevenueColumnAmt>
        <ExclusionAmt>2050895</ExclusionAmt>
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      <GrossAmountSalesAssetsGrp>
        <SecuritiesAmt>9484321</SecuritiesAmt>
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      <NetGainOrLossInvestmentsGrp>
        <TotalRevenueColumnAmt>-195295</TotalRevenueColumnAmt>
        <ExclusionAmt>-195295</ExclusionAmt>
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        <TotalRevenueColumnAmt>-2912</TotalRevenueColumnAmt>
        <UnrelatedBusinessRevenueAmt>-2912</UnrelatedBusinessRevenueAmt>
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        <Desc>REBATES AND LABELS</Desc>
        <BusinessCd>900099</BusinessCd>
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        <ExclusionAmt>345143</ExclusionAmt>
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      <OtherRevenueMiscGrp>
        <Desc>CAREER CENTER</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>252428</TotalRevenueColumnAmt>
        <UnrelatedBusinessRevenueAmt>252428</UnrelatedBusinessRevenueAmt>
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      <OtherRevenueMiscGrp>
        <Desc>MISCELLANEOUS</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>911</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>911</RelatedOrExemptFuncIncomeAmt>
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      <OtherRevenueTotalAmt>598482</OtherRevenueTotalAmt>
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        <UnrelatedBusinessRevenueAmt>956157</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>3316484</ExclusionAmt>
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      <GrantsToDomesticOrgsGrp>
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        <TotalAmt>7748356</TotalAmt>
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      </PayrollTaxesGrp>
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      <FeesForServicesAccountingGrp>
        <TotalAmt>45842</TotalAmt>
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        <Desc>DUES AND SUBSCRIPTIONS</Desc>
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        <Desc>GIFTS AND AWARDS</Desc>
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        <EOYAmt>822737</EOYAmt>
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        <EOYAmt>1249843</EOYAmt>
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        <EOYAmt>1079893</EOYAmt>
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        <EOYAmt>1048552</EOYAmt>
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        <EOYAmt>37652460</EOYAmt>
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        <EOYAmt>7087308</EOYAmt>
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        <BOYAmt>4282449</BOYAmt>
        <EOYAmt>3596340</EOYAmt>
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      <TotalAssetsGrp>
        <BOYAmt>49255211</BOYAmt>
        <EOYAmt>52537133</EOYAmt>
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        <EOYAmt>1920775</EOYAmt>
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        <EOYAmt>4803354</EOYAmt>
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        <EOYAmt>5081620</EOYAmt>
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      <TotalLiabilitiesGrp>
        <BOYAmt>11407491</BOYAmt>
        <EOYAmt>11805749</EOYAmt>
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        <BOYAmt>37847720</BOYAmt>
        <EOYAmt>40731384</EOYAmt>
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        <EOYAmt>40731384</EOYAmt>
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      <OtherSecuritiesGrp>
        <Desc>TA REALTY CORE PROPERTY FUND</Desc>
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        <Desc>GOLDMAN SACHS VINTAGE VIII SCSP</Desc>
        <BookValueAmt>933575</BookValueAmt>
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      <OtherSecuritiesGrp>
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      <OtherSecuritiesGrp>
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      <OtherSecuritiesGrp>
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      <OtherSecuritiesGrp>
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      <OtherSecuritiesGrp>
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      <OtherSecuritiesGrp>
        <Desc>BLACKSTONE REIT CI I</Desc>
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        <FormAndLineReferenceDesc>PART V, LINE 4:</FormAndLineReferenceDesc>
        <ExplanationTxt>ASTRO WILL USE THESE ENDOWMENT FUNDS FOR SPECIFIC PROGRAMS AND ACTIVITES AS DESIGNATED BY THE BOARD OF DIRECTORS.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART X, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>ASTRO PERFORMED AN EVALUATION OF UNCERTAINTY IN INCOME TAXES FOR THE YEAR ENDED DECEMBER 31, 2023, AND DETERMINED THAT THERE ARE NO MATTERS THAT WOULD REQUIRE RECOGNITION IN THE CONSOLIDATED FINANCIAL STATEMENTS OR THAT MAY HAVE ANY EFFECT ON ITS TAX-EXEMPT STATUS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART XI, LINE 4B - OTHER ADJUSTMENTS:</FormAndLineReferenceDesc>
        <ExplanationTxt>COST OF GOODS SOLD -5,160.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART XII, LINE 2D - OTHER ADJUSTMENTS:</FormAndLineReferenceDesc>
        <ExplanationTxt>COST OF GOODS SOLD 5,160.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART XII, LINE 2B</FormAndLineReferenceDesc>
        <ExplanationTxt>PRIOR YEAR ADJUSTMENTS INCLUDE REFUNDS OF UNUSED FUNDS FROM PRIOR YEAR GRANTS.</ExplanationTxt>
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    <IRS990ScheduleI documentId="RetDoc1041900001">
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      <RecipientTable>
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          <AddressLine1Txt>15173 SPRINGDALE ST</AddressLine1Txt>
          <CityNm>HUNTINGTON BEACH</CityNm>
          <StateAbbreviationCd>CA</StateAbbreviationCd>
          <ZIPCd>92649</ZIPCd>
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      <RecipientTable>
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      <RecipientTable>
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          <StateAbbreviationCd>VA</StateAbbreviationCd>
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      <RecipientTable>
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      <RecipientTable>
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      <RecipientTable>
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      <RecipientTable>
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          <BusinessNameLine1Txt>ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI</BusinessNameLine1Txt>
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          <AddressLine1Txt>1 GUSTAVE LEVY PLACE</AddressLine1Txt>
          <CityNm>NEW YORK</CityNm>
          <StateAbbreviationCd>NY</StateAbbreviationCd>
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      <RecipientTable>
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          <AddressLine1Txt>3200 BURNET AVENUE</AddressLine1Txt>
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          <StateAbbreviationCd>OH</StateAbbreviationCd>
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        <PurposeOfGrantTxt>RESEARCH GRANT AWARD</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>THE RESEARCH INSTITUTE OF FOX CHASE CANCER CENTER</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>333 COTTMAN AVENUE</AddressLine1Txt>
          <CityNm>PHILADELPHIA</CityNm>
          <StateAbbreviationCd>PA</StateAbbreviationCd>
          <ZIPCd>19111</ZIPCd>
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        <RecipientEIN>236296135</RecipientEIN>
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        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>RESEARCH GRANT AWARD</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>MELANOMA RESEARCH ALLIANCE</BusinessNameLine1Txt>
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        <USAddress>
          <AddressLine1Txt>730 15TH STREET NW</AddressLine1Txt>
          <CityNm>WASHINGTON</CityNm>
          <StateAbbreviationCd>DC</StateAbbreviationCd>
          <ZIPCd>20005</ZIPCd>
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        <RecipientEIN>261636099</RecipientEIN>
        <IRCSectionDesc>501(C)(3)</IRCSectionDesc>
        <CashGrantAmt>112500</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>RESEARCH GRANT AWARD</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>NRG ONCOLOGY FOUNDATION</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>1600 JOHN F KENNEDY BLVD</AddressLine1Txt>
          <CityNm>PHILADELPHIA</CityNm>
          <StateAbbreviationCd>PA</StateAbbreviationCd>
          <ZIPCd>19103</ZIPCd>
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        <RecipientEIN>900912747</RecipientEIN>
        <IRCSectionDesc>501(C)(3)</IRCSectionDesc>
        <CashGrantAmt>25000</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>RESEARCH GRANT AWARD</PurposeOfGrantTxt>
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      <Total501c3OrgCnt>14</Total501c3OrgCnt>
      <TotalOtherOrgCnt>1</TotalOtherOrgCnt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>ASTRO FUNDS RESEARCH FOR JUNIOR FACULTY, RESIDENTS, FELLOWS, AND POSTDOCTORAL FELLOWS IN SUPPORT OF RADIATION ONCOLOGY RESEARCHERS' CAREERS. ASTRO AWARD GRANTS REQUIRE SPECIFIC DELIVERABLES (SUCH AS ANNUAL WRITTEN PROGRESS REPORTS AND A FINAL WRITTEN REPORT) TO ENSURE THAT THE FUNDS HAVE BEEN USED TO ACCOMPLISH A DEFINED PURPOSE OF THE GRANT.</ExplanationTxt>
      </SupplementalInformationDetail>
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        <PersonNm>LAURA I THEVENOT</PersonNm>
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        <PersonNm>EMILY WILSON</PersonNm>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>ANNE HUBBARD</PersonNm>
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        <PersonNm>TERRY KARRAS</PersonNm>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>LAURA GOGAL</PersonNm>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>CHRIS NEUMANN</PersonNm>
        <TitleTxt>VP, EDUCATION</TitleTxt>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>ANNA ARNONE</PersonNm>
        <TitleTxt>VP, MEMBERSHIP &amp; COMMUNICATION</TitleTxt>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>SAMANTHA DAWES</PersonNm>
        <TitleTxt>DIRECTOR OF QUALITY IMPROVEMENT</TitleTxt>
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        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
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        <TitleTxt>DIRECTOR OF DEI</TitleTxt>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>MICHELE CORDIE</PersonNm>
        <TitleTxt>DIRECTOR OF MEETINGS</TitleTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 1A</FormAndLineReferenceDesc>
        <ExplanationTxt>FORMER BOARD MEMBERS NAJEEB MOHIDEEN AND RANDALL TEN HAKEN RECEIVED TRAVEL EXPENSE REIMBURSEMENTS FOR COMPANION TRAVEL EXPENSES IN 2023.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 4B</FormAndLineReferenceDesc>
        <ExplanationTxt>DURING THE YEAR ENDED DECEMBER 31, 2023, LAURA THEVENOT, CEO, PARTICIPATED IN A 457(F) NONQUALIFIED PLAN, WITH CONTRIBUTIONS TO THE PLAN OF $11,000.</ExplanationTxt>
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    </IRS990ScheduleJ>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 6</FormAndLineReferenceDesc>
        <ExplanationTxt>ASTRO'S NOMINATING COMMITTEE IS COMPRISED OF 12 MEMBERS, INCLUDING 6 BOARD MEMBERS AND 6 PERSONS ELECTED FROM ITS MEMBERSHIP. THE NOMINATING COMMITTEE IS RESPONSIBLE FOR FINALIZING THE SLATE OF CANDIDATES FOR THE BOARD OF DIRECTORS. ASTRO MEMBERSHIP IS DIVIDED INTO NINE CATEGORIES: ACTIVE, AFFILIATE, INTERNATIONAL, ASSOCIATE, POSTDOCTORAL FELLOW, MEMBER-IN-TRAINING, STUDENT/GRADUATE STUDENT/PGY-1, EMERITUS, AND HONORARY. ONLY ACTIVE, AFFILIATE, AND INTERNATIONAL MEMBERS HAVE THE RIGHT TO VOTE AT MEMBERSHIP MEETINGS. FURTHERMORE, ONLY ACTIVE MEMBERS HAVE THE RIGHT TO HOLD ELECTIVE OFFICE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 7A</FormAndLineReferenceDesc>
        <ExplanationTxt>REFER TO EXPLANATION PROVIDED IN RESPONSE TO LINE 6 FOR A DESCRIPTION OF THE MEMBERS WITH THE RIGHT TO ELECT THE GOVERNING BODY. THE VOTING MEMBERSHIP OF THE SOCIETY SHALL ELECT BOARD MEMBERS AND NOMINATING COMMITTEE MEMBERS, AND AS NECESSARY, REPLACEMENTS TO FILL ANY VACANCIES OCCURRING IN ELECTED OFFICES DUE TO DEATH, RESIGNATION, REMOVAL, OR ASSUMPTION OF HIGHER OFFICE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 7B</FormAndLineReferenceDesc>
        <ExplanationTxt>REFER TO EXPLANATION PROVIDED IN RESPONSE TO LINE 6 FOR A DESCRIPTION OF THE MEMBERS WITH THE RIGHT TO PARTICIPATE IN ASTRO'S GOVERNANCE.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE FEDERAL FORM 990 IS PREPARED BY OUR EXTERNAL TAX ACCOUNTANTS. THE DRAFT IS PROVIDED TO OUR FINANCE STAFF FOR REVIEW BEFORE BEING SUBMITTED TO THE VP FINANCE &amp; ADMINISTRATION, CEO, AND TREASURER FOR THEIR REVIEW AND APPROVAL. THE REVISED DRAFT IS THEN PROVIDED TO THE FULL BOARD OF DIRECTORS FOR THEIR REVIEW PRIOR TO FILING WITH THE INTERNAL REVENUE SERVICE.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>ASTRO'S OFFICERS, DIRECTORS, KEY EMPLOYEES AND VOLUNTEERS ARE REQUIRED TO FILL OUT DISCLOSURE FORMS ON AN ANNUAL BASIS AND TO UPDATE THEIR DISCLOSURE FORMS UPON ANY MATERIAL CHANGE IN THE INTERIM. THESE DISCLOSURE FORMS ARE REVIEWED IN ORDER TO IDENTIFY AND ADDRESS ANY POTENTIAL CONFLICTS OF INTERESTS FOR THESE INDIVIDUALS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 15</FormAndLineReferenceDesc>
        <ExplanationTxt>AN INDEPENDENT CONSULTANT PERFORMED MARKET SURVEY TO DEVELOP SALARY STRUCTURE AND RANGES. ASTRO'S PRACTICE IS TO COMPLETE A MARKET SURVEY EVERY THREE YEARS; THIS WAS LAST COMPLETED FOR THE CEO IN 2024. THE CEO'S COMPENSATION IS DETERMINED BY A SUBCOMMITTEE OF THE BOARD USING COMPARABLE SALARIES OF SIMILAR CEO POSITIONS OF NONPROFIT MEDICAL ORGANIZATIONS. THIS REVIEW WAS DISCUSSED WITH THE BOARD OF DIRECTORS AND RECEIVED THEIR APPROVAL. ANNUALLY, BUDGET GUIDELINES ARE SET FOR ANY ADDITIONS TO STAFF AND SALARY INCREASES. MANAGERS MAKE RECOMMENDATIONS FOR ANNUAL INCREASES AND PROMOTIONS WHICH ARE REVIEWED BY HUMAN RESOURCES AND THE DIVISION VICE PRESIDENTS. ALL PROMOTIONS ARE APPROVED BY THE CHIEF EXECUTIVE OFFICER.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>THE SUMMARY FINANCIAL STATEMENTS ARE AVAILABLE UPON REQUEST. GOVERNING DOCUMENTS AND CONFLICT OF INTEREST POLICY ARE AVAILABLE ON OUR WEBSITE.</ExplanationTxt>
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        <OtherOrganizationName>
          <BusinessNameLine1Txt>RADIATION ONCOLOGY INSTITUTE</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>C</TransactionTypeTxt>
        <InvolvedAmt>10000</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>ACTUAL</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>RADIATION ONCOLOGY INSTITUTE</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>N</TransactionTypeTxt>
        <InvolvedAmt>82090</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>FMV</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>RADIATION ONCOLOGY INSTITUTE</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>O</TransactionTypeTxt>
        <InvolvedAmt>344592</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>FMV</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>RADIATION ONCOLOGY INSTITUTE</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>Q</TransactionTypeTxt>
        <InvolvedAmt>38128</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>ACTUAL</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
    </IRS990ScheduleR>
  </ReturnData>
</Return>