﻿<?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="2023v6.0">
  <ReturnHeader binaryAttachmentCnt="0">
    <ReturnTs>2025-10-01T09:30:18-05:00</ReturnTs>
    <TaxPeriodEndDt>2024-11-30</TaxPeriodEndDt>
    <PreparerFirmGrp>
      <PreparerFirmEIN>263075049</PreparerFirmEIN>
      <PreparerFirmName>
        <BusinessNameLine1Txt>BURDICK &amp; ASSOCIATES PC</BusinessNameLine1Txt>
      </PreparerFirmName>
      <PreparerUSAddress>
        <AddressLine1Txt>8400 E PRENTICE AVE STE 660</AddressLine1Txt>
        <CityNm>GREENWOOD VILLAGE</CityNm>
        <StateAbbreviationCd>CO</StateAbbreviationCd>
        <ZIPCd>80111</ZIPCd>
      </PreparerUSAddress>
    </PreparerFirmGrp>
    <ReturnTypeCd>990EZ</ReturnTypeCd>
    <TaxPeriodBeginDt>2023-12-01</TaxPeriodBeginDt>
    <Filer>
      <EIN>237417448</EIN>
      <BusinessName>
        <BusinessNameLine1Txt>ROCKY MOUNTAIN NEUROSURGICAL SOCIETY</BusinessNameLine1Txt>
      </BusinessName>
      <BusinessNameControlTxt>ROCK</BusinessNameControlTxt>
      <PhoneNum>6462984672</PhoneNum>
      <USAddress>
        <AddressLine1Txt>4000 CAMBRIDGE ST</AddressLine1Txt>
        <CityNm>KANSAS CITY</CityNm>
        <StateAbbreviationCd>KS</StateAbbreviationCd>
        <ZIPCd>66160</ZIPCd>
      </USAddress>
    </Filer>
    <BusinessOfficerGrp>
      <PersonNm>JUSTIN DAVIS</PersonNm>
      <PersonTitleTxt>TREASURER</PersonTitleTxt>
      <PhoneNum>6462984672</PhoneNum>
      <SignatureDt>2025-09-26</SignatureDt>
      <DiscussWithPaidPreparerInd>1</DiscussWithPaidPreparerInd>
    </BusinessOfficerGrp>
    <IRSResponsiblePrtyInfoCurrInd>1</IRSResponsiblePrtyInfoCurrInd>
    <PreparerPersonGrp>
      <PreparerPersonNm>KELLIE L BURDICK</PreparerPersonNm>
      <PTIN>P01521644</PTIN>
      <PhoneNum>3038131380</PhoneNum>
    </PreparerPersonGrp>
    <TaxYr>2023</TaxYr>
    <BuildTS>2025-03-06 01:10:19Z</BuildTS>
  </ReturnHeader>
  <ReturnData documentCnt="3">
    <IRS990EZ documentId="RetDoc1234200001" referenceDocumentId="RetDoc1051800001 RetDoc2278000001">
      <MethodOfAccountingCashInd>X</MethodOfAccountingCashInd>
      <ScheduleBNotRequiredInd>X</ScheduleBNotRequiredInd>
      <WebsiteAddressTxt>WWW.RMNS.ORG</WebsiteAddressTxt>
      <Organization501cInd organization501cTypeTxt="6">X</Organization501cInd>
      <TypeOfOrganizationCorpInd>X</TypeOfOrganizationCorpInd>
      <GrossReceiptsAmt>136495</GrossReceiptsAmt>
      <InfoInScheduleOPartIInd>X</InfoInScheduleOPartIInd>
      <ProgramServiceRevenueAmt>88751</ProgramServiceRevenueAmt>
      <MembershipDuesAmt>47744</MembershipDuesAmt>
      <TotalRevenueAmt>136495</TotalRevenueAmt>
      <FeesAndOtherPymtToIndCntrctAmt>3439</FeesAndOtherPymtToIndCntrctAmt>
      <OtherExpensesTotalAmt>179151</OtherExpensesTotalAmt>
      <TotalExpensesAmt>182590</TotalExpensesAmt>
      <ExcessOrDeficitForYearAmt>-46095</ExcessOrDeficitForYearAmt>
      <NetAssetsOrFundBalancesBOYAmt>82932</NetAssetsOrFundBalancesBOYAmt>
      <OtherChangesInNetAssetsAmt>2255</OtherChangesInNetAssetsAmt>
      <NetAssetsOrFundBalancesEOYAmt>39092</NetAssetsOrFundBalancesEOYAmt>
      <InfoInScheduleOPartIIInd>X</InfoInScheduleOPartIIInd>
      <CashSavingsAndInvestmentsGrp>
        <BOYAmt>82202</BOYAmt>
        <EOYAmt>36107</EOYAmt>
      </CashSavingsAndInvestmentsGrp>
      <OtherAssetsTotalDetail>
        <BOYAmt>9750</BOYAmt>
        <EOYAmt>9750</EOYAmt>
      </OtherAssetsTotalDetail>
      <Form990TotalAssetsGrp>
        <BOYAmt>91952</BOYAmt>
        <EOYAmt>45857</EOYAmt>
      </Form990TotalAssetsGrp>
      <SumOfTotalLiabilitiesGrp>
        <BOYAmt>9020</BOYAmt>
        <EOYAmt>6765</EOYAmt>
      </SumOfTotalLiabilitiesGrp>
      <NetAssetsOrFundBalancesGrp>
        <BOYAmt>82932</BOYAmt>
        <EOYAmt>39092</EOYAmt>
      </NetAssetsOrFundBalancesGrp>
      <PrimaryExemptPurposeTxt>NEUROSURGEON SCIENTIFIC MEETING</PrimaryExemptPurposeTxt>
      <ProgramSrvcAccomplishmentGrp>
        <DescriptionProgramSrvcAccomTxt>ANNUAL SCIENTIFIC MEETING WITH HEALTH CARE PROVIDERS AND VENDOR ATTENDEES</DescriptionProgramSrvcAccomTxt>
        <GrantsAndAllocationsAmt>0</GrantsAndAllocationsAmt>
        <ProgramServiceExpensesAmt>158367</ProgramServiceExpensesAmt>
      </ProgramSrvcAccomplishmentGrp>
      <TotalProgramServiceExpensesAmt>158367</TotalProgramServiceExpensesAmt>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>ERIK PARKER MD</PersonNm>
        <TitleTxt>PRESIDENT</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>SALAH AOUN MD</PersonNm>
        <TitleTxt>MEMBER AT LARGE</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>JOHN CLOUGH MD</PersonNm>
        <TitleTxt>PRESIDENT ELECT/SECRETARY</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>JUSTIN DAVIS MD</PersonNm>
        <TitleTxt>TREASURER</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>JOEL D MACDONALD MD</PersonNm>
        <TitleTxt>HISTORIAN</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>JOEL D MACDONALD MD</PersonNm>
        <TitleTxt>WEBSITE ADMINISTRATOR</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>SHERVIN RAHIMPOUR MD</PersonNm>
        <TitleTxt>VICE PRESIDENT</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>BRAD LEGA MD</PersonNm>
        <TitleTxt>CME CHAIR</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <InfoInScheduleOPartVInd>X</InfoInScheduleOPartVInd>
      <ActivitiesNotPreviouslyRptInd>0</ActivitiesNotPreviouslyRptInd>
      <ChgMadeToOrgnzngDocNotRptInd>0</ChgMadeToOrgnzngDocNotRptInd>
      <OrganizationHadUBIInd>0</OrganizationHadUBIInd>
      <SubjectToProxyTaxInd>0</SubjectToProxyTaxInd>
      <OrganizationDissolvedEtcInd>0</OrganizationDissolvedEtcInd>
      <DirectIndirectPltclExpendAmt>0</DirectIndirectPltclExpendAmt>
      <MadeLoansToFromOfficersInd>0</MadeLoansToFromOfficersInd>
      <ProhibitedTaxShelterTransInd>0</ProhibitedTaxShelterTransInd>
      <BooksInCareOfDetail>
        <PersonNm>JUSTIN DAVIS MD</PersonNm>
        <USAddress>
          <AddressLine1Txt>4000 CAMBRIDGE ST</AddressLine1Txt>
          <CityNm>KANSAS CITY</CityNm>
          <StateAbbreviationCd>KS</StateAbbreviationCd>
          <ZIPCd>66160</ZIPCd>
        </USAddress>
        <PhoneNum>6462984672</PhoneNum>
      </BooksInCareOfDetail>
      <ForeignFinancialAccountInd>0</ForeignFinancialAccountInd>
      <ForeignOfficeInd>0</ForeignOfficeInd>
      <DonorAdvisedFndsInd>0</DonorAdvisedFndsInd>
      <OperateHospitalInd>0</OperateHospitalInd>
      <TanningServicesProvidedInd>0</TanningServicesProvidedInd>
      <RelatedOrganizationCtrlEntInd>0</RelatedOrganizationCtrlEntInd>
      <PoliticalCampaignActyInd>0</PoliticalCampaignActyInd>
    </IRS990EZ>
    <IRS990ScheduleO documentId="RetDoc1051800001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990-EZ, PART I, LINE 16 - OTHER EXPENSES</FormAndLineReferenceDesc>
        <ExplanationTxt>DESCRIPTION: ANNUAL MEETING EXPENSE. AMOUNT: 159,854. DESCRIPTION: WEBSITE EXPENSES. AMOUNT: 1,679. DESCRIPTION: SOFTWARE COSTS. AMOUNT: 1,017. DESCRIPTION: ADVERTISING &amp; PROMOTION. AMOUNT: 674. DESCRIPTION: OTHER EXPENSES. AMOUNT: 811. DESCRIPTION: LIABILITY INSURANCE EXPENSE. AMOUNT: 3,452. DESCRIPTION: BANK FEES. AMOUNT: 50. DESCRIPTION: WINTER MEETING EXPENSE. AMOUNT: 11,614. TOTAL TO FORM 990-EZ, LINE 16: 179,151.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990-EZ, PART I, LINE 20 - OTHER CHANGES IN NET ASSETS</FormAndLineReferenceDesc>
        <ExplanationTxt>DESCRIPTION: ACCRUAL TO CASH DIFFERENCES. AMOUNT: 2,255.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990-EZ, PART II, LINE 24 - OTHER ASSETS</FormAndLineReferenceDesc>
        <ExplanationTxt>DESCRIPTION: DUES RECEIVABLE. BEG. OF YEAR AMOUNT: 9,750. END OF YEAR AMOUNT: 9,750.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990-EZ, PART II, LINE 26 - OTHER LIABILITIES</FormAndLineReferenceDesc>
        <ExplanationTxt>DESCRIPTION: UNCONDITIONAL PROMISE TO GIVE. BEG. OF YEAR AMOUNT: 9,020. END OF YEAR AMOUNT: 6,765.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
    <TransferPrsnlBnftContractsDecl documentId="RetDoc2278000001">
      <DeclarationDesc>THE ORGANIZATION DID NOT, DURING THE YEAR, RECEIVE ANY FUNDS, DIRECTLY,OR INDIRECTLY, TO PAY PREMIUMS ON A PERSONAL BENEFIT CONTRACT.THE ORGANIZATION, DID NOT, DURING THE YEAR, PAY ANY PREMIUMS, DIRECTLY,OR INDIRECTLY, ON A PERSONAL BENEFIT CONTRACT.</DeclarationDesc>
    </TransferPrsnlBnftContractsDecl>
  </ReturnData>
</Return>