﻿<?xml version="1.0" encoding="utf-8"?>
<Return xmlns="http://www.irs.gov/efile" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.irs.gov/efile" returnVersion="2023v5.1">
  <ReturnHeader binaryAttachmentCnt="0">
    <ReturnTs>2024-11-13T13:47:03-06:00</ReturnTs>
    <TaxPeriodEndDt>2023-12-31</TaxPeriodEndDt>
    <PreparerFirmGrp>
      <PreparerFirmEIN>320043599</PreparerFirmEIN>
      <PreparerFirmName>
        <BusinessNameLine1Txt>LEGACY PROFESSIONALS LLP</BusinessNameLine1Txt>
      </PreparerFirmName>
      <PreparerUSAddress>
        <AddressLine1Txt>4 WESTBROOK CORPORATE CTR STE 700</AddressLine1Txt>
        <CityNm>WESTCHESTER</CityNm>
        <StateAbbreviationCd>IL</StateAbbreviationCd>
        <ZIPCd>60154</ZIPCd>
      </PreparerUSAddress>
    </PreparerFirmGrp>
    <ReturnTypeCd>990</ReturnTypeCd>
    <TaxPeriodBeginDt>2023-01-01</TaxPeriodBeginDt>
    <Filer>
      <EIN>222593051</EIN>
      <BusinessName>
        <BusinessNameLine1Txt>THE SOCIETY OF NEUROLOGICAL SURGEONS</BusinessNameLine1Txt>
      </BusinessName>
      <BusinessNameControlTxt>SOCI</BusinessNameControlTxt>
      <PhoneNum>8472402500</PhoneNum>
      <USAddress>
        <AddressLine1Txt>10 N MARTINGALE ROAD</AddressLine1Txt>
        <CityNm>SCHAUMBURG</CityNm>
        <StateAbbreviationCd>IL</StateAbbreviationCd>
        <ZIPCd>60173</ZIPCd>
      </USAddress>
    </Filer>
    <BusinessOfficerGrp>
      <PersonNm>LINDA LIAU</PersonNm>
      <PersonTitleTxt>TREASURER</PersonTitleTxt>
      <PhoneNum>8472402500</PhoneNum>
      <SignatureDt>2024-11-13</SignatureDt>
      <DiscussWithPaidPreparerInd>1</DiscussWithPaidPreparerInd>
    </BusinessOfficerGrp>
    <IRSResponsiblePrtyInfoCurrInd>1</IRSResponsiblePrtyInfoCurrInd>
    <PreparerPersonGrp>
      <PreparerPersonNm>CHRISTINE V ERNST</PreparerPersonNm>
      <PTIN>P01725863</PTIN>
      <PhoneNum>3123680500</PhoneNum>
      <PreparationDt>2024-11-13</PreparationDt>
    </PreparerPersonGrp>
    <TaxYr>2023</TaxYr>
    <BuildTS>2024-10-15 13:58:12Z</BuildTS>
  </ReturnHeader>
  <ReturnData documentCnt="6">
    <IRS990 documentId="RetDoc1038000001" referenceDocumentId="RetDoc1044400001">
      <PrincipalOfficerNm>LINDA LIAU</PrincipalOfficerNm>
      <USAddress>
        <AddressLine1Txt>10 N MARTINGALE ROAD</AddressLine1Txt>
        <CityNm>SCHAUMBURG</CityNm>
        <StateAbbreviationCd>IL</StateAbbreviationCd>
        <ZIPCd>60173</ZIPCd>
      </USAddress>
      <GrossReceiptsAmt>1830487</GrossReceiptsAmt>
      <GroupReturnForAffiliatesInd>0</GroupReturnForAffiliatesInd>
      <Organization501c3Ind>X</Organization501c3Ind>
      <WebsiteAddressTxt>WWW.SOCIETYNS.ORG</WebsiteAddressTxt>
      <TypeOfOrganizationCorpInd>X</TypeOfOrganizationCorpInd>
      <FormationYr>1985</FormationYr>
      <LegalDomicileStateCd>MA</LegalDomicileStateCd>
      <ActivityOrMissionDesc>PROVIDE EDUCATIONAL AND MEDICAL INFORMATION TO ITS MEMBERS</ActivityOrMissionDesc>
      <VotingMembersGoverningBodyCnt>23</VotingMembersGoverningBodyCnt>
      <VotingMembersIndependentCnt>23</VotingMembersIndependentCnt>
      <TotalEmployeeCnt>0</TotalEmployeeCnt>
      <TotalVolunteersCnt>23</TotalVolunteersCnt>
      <TotalGrossUBIAmt>0</TotalGrossUBIAmt>
      <NetUnrelatedBusTxblIncmAmt>0</NetUnrelatedBusTxblIncmAmt>
      <PYContributionsGrantsAmt>2119148</PYContributionsGrantsAmt>
      <CYContributionsGrantsAmt>1037189</CYContributionsGrantsAmt>
      <PYProgramServiceRevenueAmt>466375</PYProgramServiceRevenueAmt>
      <CYProgramServiceRevenueAmt>451454</CYProgramServiceRevenueAmt>
      <PYInvestmentIncomeAmt>66235</PYInvestmentIncomeAmt>
      <CYInvestmentIncomeAmt>143866</CYInvestmentIncomeAmt>
      <PYOtherRevenueAmt>0</PYOtherRevenueAmt>
      <CYOtherRevenueAmt>0</CYOtherRevenueAmt>
      <PYTotalRevenueAmt>2651758</PYTotalRevenueAmt>
      <CYTotalRevenueAmt>1632509</CYTotalRevenueAmt>
      <PYGrantsAndSimilarPaidAmt>10000</PYGrantsAndSimilarPaidAmt>
      <CYGrantsAndSimilarPaidAmt>267500</CYGrantsAndSimilarPaidAmt>
      <PYBenefitsPaidToMembersAmt>0</PYBenefitsPaidToMembersAmt>
      <CYBenefitsPaidToMembersAmt>0</CYBenefitsPaidToMembersAmt>
      <PYSalariesCompEmpBnftPaidAmt>0</PYSalariesCompEmpBnftPaidAmt>
      <CYSalariesCompEmpBnftPaidAmt>0</CYSalariesCompEmpBnftPaidAmt>
      <PYTotalProfFndrsngExpnsAmt>0</PYTotalProfFndrsngExpnsAmt>
      <CYTotalProfFndrsngExpnsAmt>0</CYTotalProfFndrsngExpnsAmt>
      <CYTotalFundraisingExpenseAmt>0</CYTotalFundraisingExpenseAmt>
      <PYOtherExpensesAmt>980599</PYOtherExpensesAmt>
      <CYOtherExpensesAmt>1097402</CYOtherExpensesAmt>
      <PYTotalExpensesAmt>990599</PYTotalExpensesAmt>
      <CYTotalExpensesAmt>1364902</CYTotalExpensesAmt>
      <PYRevenuesLessExpensesAmt>1661159</PYRevenuesLessExpensesAmt>
      <CYRevenuesLessExpensesAmt>267607</CYRevenuesLessExpensesAmt>
      <TotalAssetsBOYAmt>3712286</TotalAssetsBOYAmt>
      <TotalAssetsEOYAmt>3966249</TotalAssetsEOYAmt>
      <TotalLiabilitiesBOYAmt>949839</TotalLiabilitiesBOYAmt>
      <TotalLiabilitiesEOYAmt>881238</TotalLiabilitiesEOYAmt>
      <NetAssetsOrFundBalancesBOYAmt>2762447</NetAssetsOrFundBalancesBOYAmt>
      <NetAssetsOrFundBalancesEOYAmt>3085011</NetAssetsOrFundBalancesEOYAmt>
      <InfoInScheduleOPartIIIInd>X</InfoInScheduleOPartIIIInd>
      <MissionDesc>THE PURPOSE OF THE SOCIETY IN CARRYING ON THE TRADITIONS OF THE FOUNDING MEMBERS WILL BE: 1. THE CONTINUING DEVELOPMENT OF THE FIELD OF NEUROLOGICAL SURGERY INCLUDING GRADUATE AND POST-GRADUATE EDUCATION. 2. TO BESTOW RECOGNITION UPON PERSONS OF OUTSTANDING ABILITY AND EXCELLENCE IN THEIR WORK AND TEACHING SUCH RECOGNITION MAY BE BESTOWED BY APPOINTMENT TO MEMBERSHIP OR BY APPEARANCE ON THE PROGRAMS AT APPROPRIATE TIMES. 3. TO ENHANCE THE ROLE AND STATURE OF NEUROSURGICAL UNITS IN ACADEMIC MEDICAL CENTERS. 4. TO INSURE THAT PATIENTS WITH NERVOUS SYSTEM DISEASE RECEIVED THE HIGHEST QUALITY OF CARE. 5. TO ENCOURAGE AND SUPPORT RESEARCH IN NEUROSCIENCE.</MissionDesc>
      <SignificantNewProgramSrvcInd>0</SignificantNewProgramSrvcInd>
      <SignificantChangeInd>0</SignificantChangeInd>
      <ExpenseAmt>1087807</ExpenseAmt>
      <GrantAmt>267500</GrantAmt>
      <RevenueAmt>451454</RevenueAmt>
      <Desc>PROMOTE EDUCATION AND RESEARCH IN NEUROLOGICAL SURGERY AND THE NEUROSCIENCES THROUGH RESEARCH MEETINGS AND SEMINARS.</Desc>
      <TotalProgramServiceExpensesAmt>1087807</TotalProgramServiceExpensesAmt>
      <DescribedInSection501c3Ind referenceDocumentId="RetDoc1039100001">1</DescribedInSection501c3Ind>
      <ScheduleBRequiredInd referenceDocumentId="RetDoc1234500001">1</ScheduleBRequiredInd>
      <PoliticalCampaignActyInd>0</PoliticalCampaignActyInd>
      <LobbyingActivitiesInd>0</LobbyingActivitiesInd>
      <SubjectToProxyTaxInd>0</SubjectToProxyTaxInd>
      <DonorAdvisedFundInd referenceDocumentId="RetDoc1040000001">0</DonorAdvisedFundInd>
      <ConservationEasementsInd referenceDocumentId="RetDoc1040000001">0</ConservationEasementsInd>
      <CollectionsOfArtInd referenceDocumentId="RetDoc1040000001">0</CollectionsOfArtInd>
      <CreditCounselingInd referenceDocumentId="RetDoc1040000001">0</CreditCounselingInd>
      <DonorRstrOrQuasiEndowmentsInd>1</DonorRstrOrQuasiEndowmentsInd>
      <ReportLandBuildingEquipmentInd referenceDocumentId="RetDoc1040000001">0</ReportLandBuildingEquipmentInd>
      <ReportInvestmentsOtherSecInd referenceDocumentId="RetDoc1040000001">0</ReportInvestmentsOtherSecInd>
      <ReportProgramRelatedInvstInd referenceDocumentId="RetDoc1040000001">0</ReportProgramRelatedInvstInd>
      <ReportOtherAssetsInd referenceDocumentId="RetDoc1040000001">0</ReportOtherAssetsInd>
      <ReportOtherLiabilitiesInd referenceDocumentId="RetDoc1040000001">0</ReportOtherLiabilitiesInd>
      <IncludeFIN48FootnoteInd referenceDocumentId="RetDoc1040000001">0</IncludeFIN48FootnoteInd>
      <IndependentAuditFinclStmtInd referenceDocumentId="RetDoc1040000001">0</IndependentAuditFinclStmtInd>
      <ConsolidatedAuditFinclStmtInd referenceDocumentId="RetDoc1040000001">0</ConsolidatedAuditFinclStmtInd>
      <SchoolOperatingInd>0</SchoolOperatingInd>
      <ForeignOfficeInd>0</ForeignOfficeInd>
      <ForeignActivitiesInd>0</ForeignActivitiesInd>
      <MoreThan5000KToOrgInd>0</MoreThan5000KToOrgInd>
      <MoreThan5000KToIndividualsInd>0</MoreThan5000KToIndividualsInd>
      <ProfessionalFundraisingInd>0</ProfessionalFundraisingInd>
      <FundraisingActivitiesInd>0</FundraisingActivitiesInd>
      <GamingActivitiesInd>0</GamingActivitiesInd>
      <OperateHospitalInd>0</OperateHospitalInd>
      <GrantsToOrganizationsInd referenceDocumentId="RetDoc1041900001">0</GrantsToOrganizationsInd>
      <GrantsToIndividualsInd referenceDocumentId="RetDoc1041900001">1</GrantsToIndividualsInd>
      <ScheduleJRequiredInd>0</ScheduleJRequiredInd>
      <TaxExemptBondsInd>0</TaxExemptBondsInd>
      <EngagedInExcessBenefitTransInd>0</EngagedInExcessBenefitTransInd>
      <PYExcessBenefitTransInd>0</PYExcessBenefitTransInd>
      <LoanOutstandingInd>0</LoanOutstandingInd>
      <GrantToRelatedPersonInd>0</GrantToRelatedPersonInd>
      <BusinessRlnWithOrgMemInd>0</BusinessRlnWithOrgMemInd>
      <BusinessRlnWithFamMemInd>0</BusinessRlnWithFamMemInd>
      <BusinessRlnWith35CtrlEntInd>0</BusinessRlnWith35CtrlEntInd>
      <DeductibleNonCashContriInd>0</DeductibleNonCashContriInd>
      <DeductibleArtContributionInd>0</DeductibleArtContributionInd>
      <TerminateOperationsInd>0</TerminateOperationsInd>
      <PartialLiquidationInd>0</PartialLiquidationInd>
      <DisregardedEntityInd>0</DisregardedEntityInd>
      <RelatedEntityInd>0</RelatedEntityInd>
      <RelatedOrganizationCtrlEntInd>0</RelatedOrganizationCtrlEntInd>
      <TrnsfrExmptNonChrtblRltdOrgInd>0</TrnsfrExmptNonChrtblRltdOrgInd>
      <ActivitiesConductedPrtshpInd>0</ActivitiesConductedPrtshpInd>
      <ScheduleORequiredInd>1</ScheduleORequiredInd>
      <InfoInScheduleOPartVInd>X</InfoInScheduleOPartVInd>
      <IRPDocumentCnt>1</IRPDocumentCnt>
      <IRPDocumentW2GCnt>0</IRPDocumentW2GCnt>
      <BackupWthldComplianceInd>1</BackupWthldComplianceInd>
      <EmployeeCnt>0</EmployeeCnt>
      <UnrelatedBusIncmOverLimitInd>0</UnrelatedBusIncmOverLimitInd>
      <ForeignFinancialAccountInd>0</ForeignFinancialAccountInd>
      <ProhibitedTaxShelterTransInd>0</ProhibitedTaxShelterTransInd>
      <TaxablePartyNotificationInd>0</TaxablePartyNotificationInd>
      <NondeductibleContributionsInd>0</NondeductibleContributionsInd>
      <QuidProQuoContributionsInd>0</QuidProQuoContributionsInd>
      <Form8282PropertyDisposedOfInd>0</Form8282PropertyDisposedOfInd>
      <IndoorTanningServicesInd>0</IndoorTanningServicesInd>
      <SubjToTaxRmnrtnExPrchtPymtInd>0</SubjToTaxRmnrtnExPrchtPymtInd>
      <SubjectToExcsTaxNetInvstIncInd>0</SubjectToExcsTaxNetInvstIncInd>
      <InfoInScheduleOPartVIInd>X</InfoInScheduleOPartVIInd>
      <GoverningBodyVotingMembersCnt>23</GoverningBodyVotingMembersCnt>
      <IndependentVotingMemberCnt>23</IndependentVotingMemberCnt>
      <FamilyOrBusinessRlnInd>0</FamilyOrBusinessRlnInd>
      <DelegationOfMgmtDutiesInd>0</DelegationOfMgmtDutiesInd>
      <ChangeToOrgDocumentsInd>0</ChangeToOrgDocumentsInd>
      <MaterialDiversionOrMisuseInd>0</MaterialDiversionOrMisuseInd>
      <MembersOrStockholdersInd>0</MembersOrStockholdersInd>
      <ElectionOfBoardMembersInd>0</ElectionOfBoardMembersInd>
      <DecisionsSubjectToApprovaInd>0</DecisionsSubjectToApprovaInd>
      <MinutesOfGoverningBodyInd>1</MinutesOfGoverningBodyInd>
      <MinutesOfCommitteesInd>1</MinutesOfCommitteesInd>
      <OfficerMailingAddressInd>0</OfficerMailingAddressInd>
      <LocalChaptersInd>0</LocalChaptersInd>
      <Form990ProvidedToGvrnBodyInd>1</Form990ProvidedToGvrnBodyInd>
      <ConflictOfInterestPolicyInd>0</ConflictOfInterestPolicyInd>
      <WhistleblowerPolicyInd>0</WhistleblowerPolicyInd>
      <DocumentRetentionPolicyInd>0</DocumentRetentionPolicyInd>
      <CompensationProcessCEOInd>0</CompensationProcessCEOInd>
      <CompensationProcessOtherInd>0</CompensationProcessOtherInd>
      <InvestmentInJointVentureInd>0</InvestmentInJointVentureInd>
      <StatesWhereCopyOfReturnIsFldCd>MA</StatesWhereCopyOfReturnIsFldCd>
      <UponRequestInd>X</UponRequestInd>
      <BooksInCareOfDetail>
        <BusinessName>
          <BusinessNameLine1Txt>THE ORGANIZATION</BusinessNameLine1Txt>
        </BusinessName>
        <PhoneNum>8472402500</PhoneNum>
        <USAddress>
          <AddressLine1Txt>10 N MARTINGALE RD NO 190</AddressLine1Txt>
          <CityNm>SCHAUMBURG</CityNm>
          <StateAbbreviationCd>IL</StateAbbreviationCd>
          <ZIPCd>60173</ZIPCd>
        </USAddress>
      </BooksInCareOfDetail>
      <NoListedPersonsCompensatedInd>X</NoListedPersonsCompensatedInd>
      <Form990PartVIISectionAGrp>
        <PersonNm>E ANTONIO CHIOCCA</PersonNm>
        <TitleTxt>PRESIDENT -ELECT-PAST/PRESIDENT</TitleTxt>
        <AverageHoursPerWeekRt>5.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>NATHAN SELDEN</PersonNm>
        <TitleTxt>PRESIDENT-ELECT- NEW</TitleTxt>
        <AverageHoursPerWeekRt>5.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>JUDY HUANG</PersonNm>
        <TitleTxt>VICE PRESIDENT- NEW</TitleTxt>
        <AverageHoursPerWeekRt>5.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>GREGORY ZIPFEL</PersonNm>
        <TitleTxt>SECRETARY</TitleTxt>
        <AverageHoursPerWeekRt>5.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>LINDA LIAU</PersonNm>
        <TitleTxt>VICE PRESIDENT-PAST/TREASURER</TitleTxt>
        <AverageHoursPerWeekRt>5.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>E SANDER CONNOLLY</PersonNm>
        <TitleTxt>PRESIDENT-PAST/PAST PRESIDENT-NEW</TitleTxt>
        <AverageHoursPerWeekRt>5.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>WARREN SELMAN</PersonNm>
        <TitleTxt>PAST PRESIDENT- PAST/PAST PAST PRESIDENT- NEW</TitleTxt>
        <AverageHoursPerWeekRt>5.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>SEPIDEH AMIN-HANJANI</PersonNm>
        <TitleTxt>MEMBER AT LARGE- NEW</TitleTxt>
        <AverageHoursPerWeekRt>5.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>STACEY WOLFE</PersonNm>
        <TitleTxt>MEMBER AT LARGE- NEW</TitleTxt>
        <AverageHoursPerWeekRt>5.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>DAVID LIMBRICK</PersonNm>
        <TitleTxt>PROGRAM CHAIR- NEW</TitleTxt>
        <AverageHoursPerWeekRt>5.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>KIM BURCHIEL</PersonNm>
        <TitleTxt>HISTORIAN- NEW</TitleTxt>
        <AverageHoursPerWeekRt>5.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>PHILIP STIEG</PersonNm>
        <TitleTxt>LOCAL HOST- NEW</TitleTxt>
        <AverageHoursPerWeekRt>5.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>MICHAEL KAPLITT</PersonNm>
        <TitleTxt>LOCAL HOST- NEW</TitleTxt>
        <AverageHoursPerWeekRt>5.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>NICHOLAS BAMBAKIDIS</PersonNm>
        <TitleTxt>CORE- NEW</TitleTxt>
        <AverageHoursPerWeekRt>5.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>RUSSELL LONSER</PersonNm>
        <TitleTxt>ABNS LIAISON (EX OFFICIO)- NEW</TitleTxt>
        <AverageHoursPerWeekRt>5.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>ROBERT HARBAUGH</PersonNm>
        <TitleTxt>RC LIAISON (EX OFFICIO)- NEW</TitleTxt>
        <AverageHoursPerWeekRt>5.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>CHARLES BRANCH</PersonNm>
        <TitleTxt>CAST CHAIR- NEW</TitleTxt>
        <AverageHoursPerWeekRt>5.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>JOHN RATLIFF</PersonNm>
        <TitleTxt>MEMBERSHIP CHAIR- NEW</TitleTxt>
        <AverageHoursPerWeekRt>5.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>LOLA CHAMBLESS</PersonNm>
        <TitleTxt>MEDICAL STUDENT COMMITTEE CHAIR- NEW</TitleTxt>
        <AverageHoursPerWeekRt>5.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>COSTAS HADJIPANAYIS</PersonNm>
        <TitleTxt>RESEARCH CHAIR- NEW</TitleTxt>
        <AverageHoursPerWeekRt>5.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>RICHARD BYRNE</PersonNm>
        <TitleTxt>TREASURER-PAST/WINN PRIZE LIAISON- NEW</TitleTxt>
        <AverageHoursPerWeekRt>5.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>SHEROLYN PATTERSON</PersonNm>
        <TitleTxt>EX OFFICIO - ARANS PRESIDENT</TitleTxt>
        <AverageHoursPerWeekRt>5.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>REGINA SHUPAK</PersonNm>
        <TitleTxt>EX OFFICIO - CNS CEO</TitleTxt>
        <AverageHoursPerWeekRt>5.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <TotalReportableCompFromOrgAmt>0</TotalReportableCompFromOrgAmt>
      <TotReportableCompRltdOrgAmt>0</TotReportableCompRltdOrgAmt>
      <TotalOtherCompensationAmt>0</TotalOtherCompensationAmt>
      <IndivRcvdGreaterThan100KCnt>0</IndivRcvdGreaterThan100KCnt>
      <FormerOfcrEmployeesListedInd>0</FormerOfcrEmployeesListedInd>
      <TotalCompGreaterThan150KInd>0</TotalCompGreaterThan150KInd>
      <CompensationFromOtherSrcsInd>0</CompensationFromOtherSrcsInd>
      <CntrctRcvdGreaterThan100KCnt>0</CntrctRcvdGreaterThan100KCnt>
      <MembershipDuesAmt>729125</MembershipDuesAmt>
      <AllOtherContributionsAmt>308064</AllOtherContributionsAmt>
      <TotalContributionsAmt>1037189</TotalContributionsAmt>
      <ProgramServiceRevenueGrp>
        <Desc>MEETING INCOME</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>250650</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>250650</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>ACCREDITATION AND CERT</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>186429</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>186429</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>OTHER PROGRAM REVENUE</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>14375</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>14375</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <TotalProgramServiceRevenueAmt>451454</TotalProgramServiceRevenueAmt>
      <InvestmentIncomeGrp>
        <TotalRevenueColumnAmt>143866</TotalRevenueColumnAmt>
        <ExclusionAmt>143866</ExclusionAmt>
      </InvestmentIncomeGrp>
      <GrossAmountSalesAssetsGrp>
        <SecuritiesAmt>197978</SecuritiesAmt>
      </GrossAmountSalesAssetsGrp>
      <LessCostOthBasisSalesExpnssGrp>
        <SecuritiesAmt>197978</SecuritiesAmt>
      </LessCostOthBasisSalesExpnssGrp>
      <GainOrLossGrp>
        <SecuritiesAmt>0</SecuritiesAmt>
      </GainOrLossGrp>
      <NetGainOrLossInvestmentsGrp>
        <TotalRevenueColumnAmt>0</TotalRevenueColumnAmt>
      </NetGainOrLossInvestmentsGrp>
      <TotalRevenueGrp>
        <TotalRevenueColumnAmt>1632509</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>451454</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>143866</ExclusionAmt>
      </TotalRevenueGrp>
      <GrantsToDomesticIndividualsGrp>
        <TotalAmt>267500</TotalAmt>
        <ProgramServicesAmt>267500</ProgramServicesAmt>
      </GrantsToDomesticIndividualsGrp>
      <FeesForServicesManagementGrp>
        <TotalAmt>150312</TotalAmt>
        <ManagementAndGeneralAmt>150312</ManagementAndGeneralAmt>
      </FeesForServicesManagementGrp>
      <FeesForServicesLegalGrp>
        <TotalAmt>12123</TotalAmt>
        <ManagementAndGeneralAmt>12123</ManagementAndGeneralAmt>
      </FeesForServicesLegalGrp>
      <FeesForServicesAccountingGrp>
        <TotalAmt>5000</TotalAmt>
        <ManagementAndGeneralAmt>5000</ManagementAndGeneralAmt>
      </FeesForServicesAccountingGrp>
      <FeesForSrvcInvstMgmntFeesGrp>
        <TotalAmt>2527</TotalAmt>
        <ManagementAndGeneralAmt>2527</ManagementAndGeneralAmt>
      </FeesForSrvcInvstMgmntFeesGrp>
      <FeesForServicesOtherGrp>
        <TotalAmt>127841</TotalAmt>
        <ProgramServicesAmt>79261</ProgramServicesAmt>
        <ManagementAndGeneralAmt>48580</ManagementAndGeneralAmt>
      </FeesForServicesOtherGrp>
      <OfficeExpensesGrp>
        <TotalAmt>22796</TotalAmt>
        <ProgramServicesAmt>15832</ProgramServicesAmt>
        <ManagementAndGeneralAmt>6964</ManagementAndGeneralAmt>
      </OfficeExpensesGrp>
      <ConferencesMeetingsGrp>
        <TotalAmt>725214</TotalAmt>
        <ProgramServicesAmt>725214</ProgramServicesAmt>
      </ConferencesMeetingsGrp>
      <InsuranceGrp>
        <TotalAmt>17324</TotalAmt>
        <ManagementAndGeneralAmt>17324</ManagementAndGeneralAmt>
      </InsuranceGrp>
      <OtherExpensesGrp>
        <Desc>MISCELLANEOUS</Desc>
        <TotalAmt>34015</TotalAmt>
        <ManagementAndGeneralAmt>34015</ManagementAndGeneralAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>DUES AND MEMBERSHIPS</Desc>
        <TotalAmt>250</TotalAmt>
        <ManagementAndGeneralAmt>250</ManagementAndGeneralAmt>
      </OtherExpensesGrp>
      <TotalFunctionalExpensesGrp>
        <TotalAmt>1364902</TotalAmt>
        <ProgramServicesAmt>1087807</ProgramServicesAmt>
        <ManagementAndGeneralAmt>277095</ManagementAndGeneralAmt>
        <FundraisingAmt>0</FundraisingAmt>
      </TotalFunctionalExpensesGrp>
      <SavingsAndTempCashInvstGrp>
        <BOYAmt>475579</BOYAmt>
        <EOYAmt>433417</EOYAmt>
      </SavingsAndTempCashInvstGrp>
      <AccountsReceivableGrp>
        <BOYAmt>483761</BOYAmt>
        <EOYAmt>97619</EOYAmt>
      </AccountsReceivableGrp>
      <PrepaidExpensesDefrdChargesGrp>
        <BOYAmt>3662</BOYAmt>
        <EOYAmt>57761</EOYAmt>
      </PrepaidExpensesDefrdChargesGrp>
      <InvestmentsPubTradedSecGrp>
        <BOYAmt>2749284</BOYAmt>
        <EOYAmt>3377452</EOYAmt>
      </InvestmentsPubTradedSecGrp>
      <TotalAssetsGrp>
        <BOYAmt>3712286</BOYAmt>
        <EOYAmt>3966249</EOYAmt>
      </TotalAssetsGrp>
      <AccountsPayableAccrExpnssGrp>
        <BOYAmt>607087</BOYAmt>
        <EOYAmt>514100</EOYAmt>
      </AccountsPayableAccrExpnssGrp>
      <DeferredRevenueGrp>
        <BOYAmt>342752</BOYAmt>
        <EOYAmt>367138</EOYAmt>
      </DeferredRevenueGrp>
      <TotalLiabilitiesGrp>
        <BOYAmt>949839</BOYAmt>
        <EOYAmt>881238</EOYAmt>
      </TotalLiabilitiesGrp>
      <OrganizationFollowsFASB117Ind>X</OrganizationFollowsFASB117Ind>
      <NoDonorRestrictionNetAssetsGrp>
        <BOYAmt>696007</BOYAmt>
        <EOYAmt>824736</EOYAmt>
      </NoDonorRestrictionNetAssetsGrp>
      <DonorRestrictionNetAssetsGrp>
        <BOYAmt>2066440</BOYAmt>
        <EOYAmt>2260275</EOYAmt>
      </DonorRestrictionNetAssetsGrp>
      <TotalNetAssetsFundBalanceGrp>
        <BOYAmt>2762447</BOYAmt>
        <EOYAmt>3085011</EOYAmt>
      </TotalNetAssetsFundBalanceGrp>
      <TotLiabNetAssetsFundBalanceGrp>
        <BOYAmt>3712286</BOYAmt>
        <EOYAmt>3966249</EOYAmt>
      </TotLiabNetAssetsFundBalanceGrp>
      <ReconcilationRevenueExpnssAmt>267607</ReconcilationRevenueExpnssAmt>
      <NetUnrlzdGainsLossesInvstAmt>54957</NetUnrlzdGainsLossesInvstAmt>
      <OtherChangesInNetAssetsAmt>0</OtherChangesInNetAssetsAmt>
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>0</AccountantCompileOrReviewInd>
      <FSAuditedInd>0</FSAuditedInd>
      <FederalGrantAuditRequiredInd>0</FederalGrantAuditRequiredInd>
    </IRS990>
    <IRS990ScheduleA documentId="RetDoc1039100001">
      <PubliclySupportedOrg509a2Ind>X</PubliclySupportedOrg509a2Ind>
      <GiftsGrantsContrisRcvd509Grp>
        <CurrentTaxYearMinus4YearsAmt>1080279</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>136418</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>35000</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>1431507</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>1037189</CurrentTaxYearAmt>
        <TotalAmt>3720393</TotalAmt>
      </GiftsGrantsContrisRcvd509Grp>
      <GrossReceiptsAdmissionsGrp>
        <CurrentTaxYearMinus4YearsAmt>694270</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>209375</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>595987</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>1154016</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>451454</CurrentTaxYearAmt>
        <TotalAmt>3105102</TotalAmt>
      </GrossReceiptsAdmissionsGrp>
      <Total509Grp>
        <CurrentTaxYearMinus4YearsAmt>1774549</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>345793</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>630987</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>2585523</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>1488643</CurrentTaxYearAmt>
        <TotalAmt>6825495</TotalAmt>
      </Total509Grp>
      <AmountsRcvdDsqlfyPersonGrp>
        <TotalAmt>0</TotalAmt>
      </AmountsRcvdDsqlfyPersonGrp>
      <SubstantialContributorsAmtGrp>
        <CurrentTaxYearMinus1YearAmt>1073732</CurrentTaxYearMinus1YearAmt>
        <TotalAmt>1073732</TotalAmt>
      </SubstantialContributorsAmtGrp>
      <SubstAndDsqlfyPrsnsTotGrp>
        <CurrentTaxYearMinus1YearAmt>1073732</CurrentTaxYearMinus1YearAmt>
        <TotalAmt>1073732</TotalAmt>
      </SubstAndDsqlfyPrsnsTotGrp>
      <PublicSupportTotal509Amt>5751763</PublicSupportTotal509Amt>
      <GrossInvestmentIncome509Grp>
        <CurrentTaxYearMinus4YearsAmt>38178</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>35511</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>64935</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>41240</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>143422</CurrentTaxYearAmt>
        <TotalAmt>323286</TotalAmt>
      </GrossInvestmentIncome509Grp>
      <InvestmentIncomeAndUBTIGrp>
        <CurrentTaxYearMinus4YearsAmt>38178</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>35511</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>64935</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>41240</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>143422</CurrentTaxYearAmt>
        <TotalAmt>323286</TotalAmt>
      </InvestmentIncomeAndUBTIGrp>
      <TotalSupportCalendarYearGrp>
        <CurrentTaxYearMinus4YearsAmt>1812727</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>381304</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>695922</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>2626763</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>1632065</CurrentTaxYearAmt>
        <TotalAmt>7148781</TotalAmt>
      </TotalSupportCalendarYearGrp>
      <PublicSupportCY509Pct>0.80460</PublicSupportCY509Pct>
      <PublicSupportPY509Pct>0.80810</PublicSupportPY509Pct>
      <InvestmentIncomeCYPct>0.04520</InvestmentIncomeCYPct>
      <InvestmentIncomePYPct>0.03220</InvestmentIncomePYPct>
      <ThirtyThrPctSuprtTestsCY509Ind>X</ThirtyThrPctSuprtTestsCY509Ind>
    </IRS990ScheduleA>
    <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>
      </ContributorInformationGrp>
    </IRS990ScheduleB>
    <IRS990ScheduleD documentId="RetDoc1040000001">
      <CYEndwmtFundGrp>
        <BeginningYearBalanceAmt>2066440</BeginningYearBalanceAmt>
        <ContributionsAmt>92052</ContributionsAmt>
        <InvestmentEarningsOrLossesAmt>111783</InvestmentEarningsOrLossesAmt>
        <EndYearBalanceAmt>2270275</EndYearBalanceAmt>
      </CYEndwmtFundGrp>
      <CYMinus1YrEndwmtFundGrp>
        <BeginningYearBalanceAmt>867119</BeginningYearBalanceAmt>
        <ContributionsAmt>1148536</ContributionsAmt>
        <InvestmentEarningsOrLossesAmt>50785</InvestmentEarningsOrLossesAmt>
        <EndYearBalanceAmt>2066440</EndYearBalanceAmt>
      </CYMinus1YrEndwmtFundGrp>
      <CYMinus2YrEndwmtFundGrp>
        <BeginningYearBalanceAmt>775744</BeginningYearBalanceAmt>
        <ContributionsAmt>35000</ContributionsAmt>
        <InvestmentEarningsOrLossesAmt>56375</InvestmentEarningsOrLossesAmt>
        <EndYearBalanceAmt>867119</EndYearBalanceAmt>
      </CYMinus2YrEndwmtFundGrp>
      <CYMinus3YrEndwmtFundGrp>
        <BeginningYearBalanceAmt>593940</BeginningYearBalanceAmt>
        <ContributionsAmt>130328</ContributionsAmt>
        <InvestmentEarningsOrLossesAmt>51476</InvestmentEarningsOrLossesAmt>
        <EndYearBalanceAmt>775744</EndYearBalanceAmt>
      </CYMinus3YrEndwmtFundGrp>
      <CYMinus4YrEndwmtFundGrp>
        <BeginningYearBalanceAmt>465793</BeginningYearBalanceAmt>
        <ContributionsAmt>66569</ContributionsAmt>
        <InvestmentEarningsOrLossesAmt>64578</InvestmentEarningsOrLossesAmt>
        <GrantsOrScholarshipsAmt>3000</GrantsOrScholarshipsAmt>
        <EndYearBalanceAmt>593940</EndYearBalanceAmt>
      </CYMinus4YrEndwmtFundGrp>
      <PrmnntEndowmentBalanceEOYPct>1.00000</PrmnntEndowmentBalanceEOYPct>
      <EndowmentsHeldUnrelatedOrgInd>0</EndowmentsHeldUnrelatedOrgInd>
      <EndowmentsHeldRelatedOrgInd>0</EndowmentsHeldRelatedOrgInd>
      <TotalBookValueLandBuildingsAmt>0</TotalBookValueLandBuildingsAmt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART V, LINE 4:</FormAndLineReferenceDesc>
        <ExplanationTxt>TO PROVIDE AWARDS TO ENCOURAGE RESEARCH IN THE NEUROSCIENCES AND TO RECOGNIZE OUTSTANDING, CONTINUOUS COMMITMENT TO RESEARCH IN THE NEUROSCIENCES BY A NEUROLOGICAL SURGEON.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
    <IRS990ScheduleI documentId="RetDoc1041900001">
      <GrantRecordsMaintainedInd>1</GrantRecordsMaintainedInd>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>WINN AWARD</GrantTypeTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>50000</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>NEUROSURGEON- SCIENTIST TRAINING PROGRAM</GrantTypeTxt>
        <RecipientCnt>8</RecipientCnt>
        <CashGrantAmt>217500</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>IN 2007, THE SOCIETY OF NEUROLOGICAL SURGEONS ESTABLISHED THE H. RICHARD WINN, M.D. PRIZE. THE PURPOSE OF THIS INTERNATIONAL AWARD IS TO ENCOURAGE RESEARCH IN THE NEUROSCIENCES AND TO RECOGNIZE OUTSTANDING, CONTINUOUS COMMITMENT TO RESEARCH IN THE NEUROSCIENCES BY A NEUROLOGICAL SURGEON. SINCE ITS INCEPTION, EACH YEAR A DISTINGUISHED NEUROSURGICAL CLINICIAN INVESTIGATOR HAS BEEN RECOGNIZED, AND ASKED TO GIVE THE WINN PRIZE LECTURE, SUMMARIZING THEIR WORK DURING THE ANNUAL MEETING OF THE SNS. A CASH PRIZE, A BOUND EDITION OF THE WINNER'S PUBLISHED SCIENTIFIC PAPERS, AND A GOLD MEDAL ARE PRESENTED TO THE AWARD RECIPIENT. THE AWARD IS THE HIGHEST SCIENTIFIC HONOR THE SNS CAN BESTOW ON A NEUROSURGEON. DR. WINN'S FAMILY, FRIENDS, FORMER PATIENTS, AND NEUROSURGICAL COLLEAGUES INITIATED DEVELOPMENT OF THE ENDOWMENT CORPUS FOR THIS AWARD.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleI>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART V, LINE 13A</FormAndLineReferenceDesc>
        <ExplanationTxt>LINE 1B: THE TAXPAYER LEASES EMPLOYEES FROM ORGANIZATIONS. THEREFORE, THERE ARE NO W-2S FILED BUT PAYROLL EXPENSE FOR THE LEASED EMPLOYEES ARE REPORTED ON PART IX, LINE 7.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE 990 IS PROVIDED TO THE BOARD BEFORE FILING.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>THESE DOCUMENTS ARE AVAILABLE TO THE PUBLIC UPON REQUEST.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART V, LINE 2A</FormAndLineReferenceDesc>
        <ExplanationTxt>THE TAXPAYER LEASES EMPLOYEES FROM ORGANIZATIONS. THEREFORE, THERE ARE NO W-2S FILED BUT PAYROLL EXPENSE FOR THE LEASED EMPLOYEES ARE INCLUDED ON PART IX, LINE 11G.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>