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        <InvestmentEarningsOrLossesAmt>848897</InvestmentEarningsOrLossesAmt>
        <GrantsOrScholarshipsAmt>149967</GrantsOrScholarshipsAmt>
        <OtherExpendituresAmt>91700</OtherExpendituresAmt>
        <AdministrativeExpensesAmt>90071</AdministrativeExpensesAmt>
        <EndYearBalanceAmt>14954438</EndYearBalanceAmt>
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      <CYMinus3YrEndwmtFundGrp>
        <BeginningYearBalanceAmt>14448589</BeginningYearBalanceAmt>
        <ContributionsAmt>1348279</ContributionsAmt>
        <InvestmentEarningsOrLossesAmt>-845148</InvestmentEarningsOrLossesAmt>
        <GrantsOrScholarshipsAmt>3600</GrantsOrScholarshipsAmt>
        <OtherExpendituresAmt>528707</OtherExpendituresAmt>
        <AdministrativeExpensesAmt>89733</AdministrativeExpensesAmt>
        <EndYearBalanceAmt>14329680</EndYearBalanceAmt>
      </CYMinus3YrEndwmtFundGrp>
      <CYMinus4YrEndwmtFundGrp>
        <BeginningYearBalanceAmt>14109764</BeginningYearBalanceAmt>
        <ContributionsAmt>64500</ContributionsAmt>
        <InvestmentEarningsOrLossesAmt>2720555</InvestmentEarningsOrLossesAmt>
        <OtherExpendituresAmt>2360919</OtherExpendituresAmt>
        <AdministrativeExpensesAmt>85311</AdministrativeExpensesAmt>
        <EndYearBalanceAmt>14448589</EndYearBalanceAmt>
      </CYMinus4YrEndwmtFundGrp>
      <BoardDesignatedBalanceEOYPct>0.93720</BoardDesignatedBalanceEOYPct>
      <PrmnntEndowmentBalanceEOYPct>0.05280</PrmnntEndowmentBalanceEOYPct>
      <TermEndowmentBalanceEOYPct>0.01000</TermEndowmentBalanceEOYPct>
      <EndowmentsHeldUnrelatedOrgInd>0</EndowmentsHeldUnrelatedOrgInd>
      <EndowmentsHeldRelatedOrgInd>0</EndowmentsHeldRelatedOrgInd>
      <LeaseholdImprovementsGrp>
        <OtherCostOrOtherBasisAmt>100634</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>100294</DepreciationAmt>
        <BookValueAmt>340</BookValueAmt>
      </LeaseholdImprovementsGrp>
      <EquipmentGrp>
        <OtherCostOrOtherBasisAmt>298312</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>257490</DepreciationAmt>
        <BookValueAmt>40822</BookValueAmt>
      </EquipmentGrp>
      <TotalBookValueLandBuildingsAmt>41162</TotalBookValueLandBuildingsAmt>
      <OtherLiabilitiesOrgGrp>
        <Desc>OPERATING LEASE LIABILITIES</Desc>
        <Amt>751782</Amt>
      </OtherLiabilitiesOrgGrp>
      <TotalLiabilityAmt>751782</TotalLiabilityAmt>
      <FootnoteTextInd>X</FootnoteTextInd>
      <TotalRevEtcAuditedFinclStmtAmt>11355444</TotalRevEtcAuditedFinclStmtAmt>
      <NetUnrealizedGainsInvstAmt>904576</NetUnrealizedGainsInvstAmt>
      <DonatedServicesAndUseFcltsAmt>193280</DonatedServicesAndUseFcltsAmt>
      <OtherRevenueAmt>164000</OtherRevenueAmt>
      <RevenueNotReportedAmt>1261856</RevenueNotReportedAmt>
      <RevenueSubtotalAmt>10093588</RevenueSubtotalAmt>
      <InvestmentExpensesNotIncldAmt>112796</InvestmentExpensesNotIncldAmt>
      <OtherRevenuesNotIncludedAmt>1164953</OtherRevenuesNotIncludedAmt>
      <RevenueNotReportedFinclStmtAmt>1277749</RevenueNotReportedFinclStmtAmt>
      <TotalRevenuePerForm990Amt>11371337</TotalRevenuePerForm990Amt>
      <TotExpnsEtcAuditedFinclStmtAmt>11809519</TotExpnsEtcAuditedFinclStmtAmt>
      <DonatedServicesUseFcltsAmt>193280</DonatedServicesUseFcltsAmt>
      <ExpensesNotReportedAmt>193280</ExpensesNotReportedAmt>
      <ExpensesSubtotalAmt>11616239</ExpensesSubtotalAmt>
      <InvestmentExpensesNotIncld2Amt>112796</InvestmentExpensesNotIncld2Amt>
      <OtherExpensesNotIncludedAmt>1166841</OtherExpensesNotIncludedAmt>
      <ExpensesNotRptFinclStmtAmt>1279637</ExpensesNotRptFinclStmtAmt>
      <TotalExpensesPerForm990Amt>12895876</TotalExpensesPerForm990Amt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART V, LINE 4:</FormAndLineReferenceDesc>
        <ExplanationTxt>SYMPOSIA HAS THREE ENDOWMENT FUNDS RESTRICTED BY DONORS TO PROVIDE SUPPORT FOR THE PROGRAM ENRICHMENT IN THE LIFE SCIENCE PROGRAM, TO CONDUCT ONE MEETING EACH YEAR ON A TOPIC RELATED TO CANCER IMMUNOTHERAPY, AND FOR SCHOLARSHIPS. THE ENDOWMENT INCLUDES ONLY DONOR RESTRICTED FUNDS, AS THE BOARD OF DIRECTORS HAS NOT DESIGNATED ANY NET ASSETS WITHOUT DONOR RESTRICTIONS TO FUNCTION AS ENDOWMENT. IN ADDITION, SYMPOSIA HAS SEVEN OTHER ENDOWMENT FUNDS RESTRICTED BY INDIVIDUAL DONORS TO PROVIDE SUPPORT FOR THE PROGRAM ENRICHMENT IN THE LIFE SCIENCE PROGRAM, MEETING SUPPORT FOR TOPICS ON CANCER IMMUNOTHERAPY, SUPPORT TO FUND KEYNOTE LECTURES IN EMERGING TOPICS IN MEMBRANES AND LIPIDS, TRAVEL STIPENDS FOR A STUDENT OR POSTDOC FROM KENYA TO ATTEND A KEYSTONE SYMPOSIA MEETING IN PERSON OR VIRTUALLY AND ANOTHER FOR UNRESTRICTED GENERAL OPERATING SUPPORT.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART X, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>SYMPOSIA BELIEVES THAT IT HAS APPROPRIATE SUPPORT FOR ANY TAX POSITIONS TAKEN AFFECTING ITS ANNUAL FILING REQUIREMENTS, AND AS SUCH, DO NOT HAVE ANY UNCERTAIN TAX POSITIONS THAT ARE MATERIAL TO THE FINANCIAL STATEMENTS. SYMPOSIA WOULD RECOGNIZE FUTURE ACCRUED INTEREST AND PENALTIES RELATED TO UNRECOGNIZED TAX BENEFITS AND LIABILITIES IN INCOME TAX EXPENSE IF SUCH INTEREST AND PENALTIES ARE INCURRED.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART XI, LINE 2D - OTHER ADJUSTMENTS:</FormAndLineReferenceDesc>
        <ExplanationTxt>RECOVERED UNCOLLECTABLE PROMISES TO GIVE 164,000.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART XI, LINE 4B - OTHER ADJUSTMENTS:</FormAndLineReferenceDesc>
        <ExplanationTxt>SCHOLARSHIP TRAVEL STIPENDS NETTED WITH INCOME ON THE FINANCIALS 1,166,841. LOSS ON THE DISPOSAL OF PROPERTY AND EQUIPMENT -1,888.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART XII, LINE 4B - OTHER ADJUSTMENTS:</FormAndLineReferenceDesc>
        <ExplanationTxt>SCHOLARSHIP TRAVEL STIPENDS NETTED WITH INCOME ON THE FINANCIALS 1,166,841.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
    <IRS990ScheduleF documentId="RetDoc1040500001">
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      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>EAST ASIA AND THE PACIFIC</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>REGISTRATION AND TRAVEL STIPENDS</TypeOfActivitiesConductedTxt>
        <SpecificServicesProvidedTxt>REGISTRATION AND TRAVEL STIPENDS</SpecificServicesProvidedTxt>
        <RegionTotalExpendituresAmt>39069</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>EUROPE (INCLUDING ICELAND &amp; GREENLAND) - ALBANIA, ANDORRA, AUSTRIA, BELGIUM</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>REGISTRATION AND TRAVEL STIPENDS</TypeOfActivitiesConductedTxt>
        <SpecificServicesProvidedTxt>REGISTRATION AND TRAVEL STIPENDS</SpecificServicesProvidedTxt>
        <RegionTotalExpendituresAmt>105757</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>MIDDLE EAST AND NORTH AFRICA - ALGERIA, BAHRAIN, DJIBOUTI, EGYPT,</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>REGISTRATION AND TRAVEL STIPENDS</TypeOfActivitiesConductedTxt>
        <SpecificServicesProvidedTxt>REGISTRATION AND TRAVEL STIPENDS</SpecificServicesProvidedTxt>
        <RegionTotalExpendituresAmt>6000</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>NORTH AMERICA - CANADA AND MEXICO, BUT NOT THE UNITED STATES</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>REGISTRATION AND TRAVEL STIPENDS</TypeOfActivitiesConductedTxt>
        <SpecificServicesProvidedTxt>REGISTRATION AND TRAVEL STIPENDS</SpecificServicesProvidedTxt>
        <RegionTotalExpendituresAmt>27547</RegionTotalExpendituresAmt>
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      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>SOUTH AMERICA - ARGENTINA, BOLIVIA, BRAZIL, CHILE, COLUMBIA, ECUADOR,</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>REGISTRATION AND TRAVEL STIPENDS</TypeOfActivitiesConductedTxt>
        <SpecificServicesProvidedTxt>REGISTRATION AND TRAVEL STIPENDS</SpecificServicesProvidedTxt>
        <RegionTotalExpendituresAmt>15214</RegionTotalExpendituresAmt>
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      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>SOUTH ASIA - AFGHANISTAN, BANGLADESH, BHUTAN, INDIA, MALDIVES, NEPAL,</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>REGISTRATION AND TRAVEL STIPENDS</TypeOfActivitiesConductedTxt>
        <SpecificServicesProvidedTxt>REGISTRATION AND TRAVEL STIPENDS</SpecificServicesProvidedTxt>
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      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>SUB-SAHARAN AFRICA - ANGOLA, BENIN, BOTSWANA, BURKINA FASO,</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>REGISTRATION AND TRAVEL STIPENDS</TypeOfActivitiesConductedTxt>
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        <RegionTotalExpendituresAmt>18201</RegionTotalExpendituresAmt>
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      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>EAST ASIA AND THE PACIFIC - AUSTRALIA, BRUNEI, BURMA, CAMBODIA,</RegionTxt>
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        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>PROGRAM SERVICES</TypeOfActivitiesConductedTxt>
        <SpecificServicesProvidedTxt>SCIENTIFIC CONFERENCE (1)</SpecificServicesProvidedTxt>
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      <AccountActivitiesOutsideUSGrp>
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        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>PROGRAM SERVICES</TypeOfActivitiesConductedTxt>
        <SpecificServicesProvidedTxt>SCIENTIFIC CONFERENCE (4)</SpecificServicesProvidedTxt>
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      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>SUB-SAHARAN AFRICA - ANGOLA, BENIN, BOTSWANA, BURKINA FASO,</RegionTxt>
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        <EmployeeCnt>0</EmployeeCnt>
        <SpecificServicesProvidedTxt>SCIENTIFIC CONFERENCE (1)</SpecificServicesProvidedTxt>
        <RegionTotalExpendituresAmt>275705</RegionTotalExpendituresAmt>
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      <ContinuationSpentAmt>1633351</ContinuationSpentAmt>
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        <RegionTxt>EAST ASIA AND THE PACIFIC - AUSTRALIA, BRUNEI, BURMA, CAMBODIA,</RegionTxt>
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        <MannerOfCashDisbursementTxt>CHECK OR WIRE</MannerOfCashDisbursementTxt>
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      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>REGISTRATION AND TRAVEL STIPENDS</TypeOfAssistanceTxt>
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        <MannerOfCashDisbursementTxt>CHECK OR WIRE</MannerOfCashDisbursementTxt>
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      <ForeignIndividualsGrantsGrp>
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        <MannerOfCashDisbursementTxt>CHECK OR WIRE</MannerOfCashDisbursementTxt>
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      <ForeignIndividualsGrantsGrp>
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        <MannerOfCashDisbursementTxt>CHECK OR WIRE</MannerOfCashDisbursementTxt>
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      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>REGISTRATION AND TRAVEL STIPENDS</TypeOfAssistanceTxt>
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        <RecipientCnt>15</RecipientCnt>
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        <MannerOfCashDisbursementTxt>CHECK OR WIRE</MannerOfCashDisbursementTxt>
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      <TransferToForeignCorpInd>0</TransferToForeignCorpInd>
      <InterestInForeignTrustInd>0</InterestInForeignTrustInd>
      <ForeignCorpOwnershipInd>0</ForeignCorpOwnershipInd>
      <PassiveForeignInvestmestCoInd>0</PassiveForeignInvestmestCoInd>
      <ForeignPartnershipInd>0</ForeignPartnershipInd>
      <BoycottCountriesInd>0</BoycottCountriesInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>SCHOLARSHIPS COVERING THE COSTS OF SYMPOSIA REGISTRATION AND TRAVEL STIPENDS FOR ELIGIBLE STUDENTS AND POSTDOCS ARE AWARDED ON A FIRST COME, FIRST SERVE BASIS UNTIL AVAILABLE FUNDING IS EXHAUSTED.</ExplanationTxt>
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      <GrantRecordsMaintainedInd>1</GrantRecordsMaintainedInd>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>SCHOLARSHIP TRAVEL STIPENDS</GrantTypeTxt>
        <RecipientCnt>292</RecipientCnt>
        <CashGrantAmt>343838</CashGrantAmt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>SCHOLARSHIPS COVERING THE COST OF SYMPOSIA REGISTRATION AND TRAVEL STIPENDS FOR ELIGIBLE STUDENTS AND POSTDOCS ARE AWARDED ON A FIRST COME, FIRST SERVE BASIS UNTIL AVAILABLE FUNDING IS EXHAUSTED.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleI>
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      <IndependentConsultantInd>X</IndependentConsultantInd>
      <Form990OfOtherOrganizationsInd>X</Form990OfOtherOrganizationsInd>
      <CompensationSurveyInd>X</CompensationSurveyInd>
      <BoardOrCommitteeApprovalInd>X</BoardOrCommitteeApprovalInd>
      <SeverancePaymentInd>0</SeverancePaymentInd>
      <SupplementalNonqualRtrPlanInd>0</SupplementalNonqualRtrPlanInd>
      <EquityBasedCompArrngmInd>0</EquityBasedCompArrngmInd>
      <CompBasedOnRevenueOfFlngOrgInd>1</CompBasedOnRevenueOfFlngOrgInd>
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        <PersonNm>DEBORAH L JOHNSON PHD</PersonNm>
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        <PersonNm>MINDA MASON</PersonNm>
        <TitleTxt>SENIOR DIRECTOR OF DEVELOPMENT</TitleTxt>
        <BaseCompensationFilingOrgAmt>150269</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>9073</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>11178</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>170520</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 5</FormAndLineReferenceDesc>
        <ExplanationTxt>THE CEO WAS PROVIDED WITH OPPORTUNITY TO RECEIVE A BONUS BASED ON THE FINANCIAL PERFORMANCE OF THE ORGANIZATION. PERFORMANCE-BASED COMPENSATION OF $15,000 WAS PAID TO THE PRIOR CEO AND $60,000 WAS ACCRUED TO THE CURRENT DURING FISCAL PERIOD ENDING JUNE 30, 2025. IN DETERMINING WHETHER THE CEO IS TO RECEIVE A BONUS AND IN DETERMINING THE AMOUNT OF THE BONUS, THE BOARD, IN ITS SOLE DISCRETION, MAY CONSIDER FACTORS THAT INCREASE KEYSTONE'S DESIRED IMPACT AND FINANCIAL PERFORMANCE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 7</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION ANNUALLY REVIEWS THE PERFORMANCE OF ITS EMPLOYEES TO DETERMINE IF ADDITIONAL COMPENSATION IN THE FORM OF MERIT INCREASES WILL BE PAID. DURING CALENDAR YEAR ENDING DECEMBER 31, 2024, MERIT INCREASES WERE AWARDED BASED ON REVIEW OF EACH INDIVIDUAL'S PERFORMANCE AND SERVICES TO THE ORGANIZATION.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleJ>
    <IRS990ScheduleM documentId="RetDoc1042900001">
      <OtherNonCashContriTableGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <Desc>TRAVEL STIPENDS</Desc>
        <ContributionCnt>102</ContributionCnt>
        <NoncashContributionsRptF990Amt>181480</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>COST OR SELLING PRIC</MethodOfDeterminingRevenuesTxt>
      </OtherNonCashContriTableGrp>
      <Form8283ReceivedCnt>0</Form8283ReceivedCnt>
      <AnyPropertyThatMustBeHeldInd>0</AnyPropertyThatMustBeHeldInd>
      <ReviewProcessUnusualNCGiftsInd>0</ReviewProcessUnusualNCGiftsInd>
      <ThirdPartiesUsedInd>0</ThirdPartiesUsedInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, COLUMN (B):</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION IS REPORTING THE TOTAL NUMBER OF CONTRIBUTORS IN PART I, COLUMN (B).</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleM>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 1A</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION HAS AN EXECUTIVE COMMITTEE COMPRISED OF THE BOARD CHAIR, THE TREASURER, THE SECRETARY, AND THE CHIEF EXECUTIVE OFFICER. IF THE EXECUTIVE COMMITTEE SO DESIRES, IT MAY ALSO HAVE ONE ADDITIONAL VOTING MEMBER PRIMARILY RESPONSIBLE FOR (I) RECOMMENDING TO THE COMMITTEE CANDIDATES TO BE NOMINATED FOR ELECTION OR REELECTION AS DIRECTORS; (II) RECOMMENDING TO THE CHAIR INDIVIDUALS FOR APPOINTMENT AS NON-BOARD MEMBERS TO SERVE AS NONVOTING MEMBERS OF BOARD COMMITTEES; (III) ORIENTING NEW DIRECTORS AND BOARD COMMITTEE MEMBERS; (IV) BOARD EDUCATION, AND; (V) RECOMMENDING TO THE COMMITTEE BOARD GOVERNANCE POLIICES. THE EXECUTIVE COMMITTEE SHALL HAVE ALL OF THE AUTHORITY OF THE BOARD OF DIRECTORS TO ACT ON BEHALF OF THE BOARD BETWEEN MEETINGS OF THE BOARD EXCEPT AS PROHIBITED BY STATUTE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>A COPY OF FORM 990 IS PROVIDED TO THE BOARD OF DIRECTORS PRIOR TO FILING WITH THE IRS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION'S CONFLICT OF INTEREST POLICY COVERS ALL BOARD MEMBERS, OFFICERS, AND EMPLOYEES OF THE ORGANIZATION. THE EXISTENCE OF ANY ACTUAL OR POTENTIAL CONFLICT OF INTEREST IS REVIEWED BY THE BOARD OF DIRECTORS AND CHIEF EXECUTIVE OFFICER SO THAT SAFEGUARDS CAN BE ESTABLISHED TO PROTECT ALL PARTIES. IF CONFLICTS ARE DETERMINED, THE PERSON WITH THE CONFLICT IS EXCLUDED FROM THE MEETING/DECISION AND WILL REFRAIN FROM VOTING ON THE MATTER.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 15A</FormAndLineReferenceDesc>
        <ExplanationTxt>COMPENSATION FOR THE ORGANIZATION'S CHIEF EXECUTIVE OFFICER IS REVIEWED ON AN ANNUAL BASIS BY THE CHAIRMAN OF THE BOARD AND THE FULL EXECUTIVE COMMITTEE IN CONSULTATION WITH THE CHAIR OF THE PERSONNEL COMMITTEE. COMPARABILITY DATA FROM THE AMERICAN SOCIETY OF ASSOCIATION EXECUTIVES AND GUIDESTAR IS USED IN THE DETERMINATION OF COMPENSATION AMOUNTS. THE CHIEF EXECUTIVE OFFICER REVIEWS THE COMPENSATION AMOUNTS FOR ALL OTHER STAFF MEMBERS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION MAKES ITS GOVERNING DOCUMENTS, CONFLICT OF INTEREST POLICY, FINANCIAL STATEMENTS, FORM 1023, AND FORM 990 AVAILABLE TO THE PUBLIC UPON REQUEST.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART XI, LINE 9:</FormAndLineReferenceDesc>
        <ExplanationTxt>LOSS ON UNCOLLECTIBLE PROMISES TO GIVE 164,000.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART I, LINE 5, PART V, LINE 2A, PART VII AND PART IX:</FormAndLineReferenceDesc>
        <ExplanationTxt>KEYSTONE SYMPOSIA ON MOLECULAR AND CELLULAR BIOLOGY HAS A CLIENT SERVICE AGREEMENT WITH INTANDEM HUMAN RESOURCES, LLC, AN UNRELATED ORGANIZATIONS. INTANDEM HUMAN RESOURCES, LLC IS A PROFESSIONAL EMPLOYER ORGANIZATIONS (PEO). AS A RESULT, THE PEO IS THE EMPLOYER FOR THE PURPOSES OF PAYING WAGES AND BENEFITS. THE PEO REMITS ALL TAXES AND FILES ALL RETURNS UNDER THEIR NAMES AND EMPLOYER IDENTIFICATION NUMBERS. THE SALARY, BENEFITS, AND PAYROLL TAX EXPENSES SHOWN ON LINE 5,7,AND 9 OF PART IX REPRESENT AMOUNTS PAID BY THE PEOS AS PART OF THE CLIENT SERVICE AGREEMENT. IN ADDITION, KEYSTONE SYMPOSIA ON MOLECULAR AND CELLULAR BIOLOGY IS REPORTING PAID EMPLOYEES ON FORM 990, PART V, LINE 2A BECAUSE OF THE RELATIONSHIP WITH THE PEO AS STATED ABOVE.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>