﻿<?xml version="1.0" encoding="utf-8"?>
<Return xmlns="http://www.irs.gov/efile" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" returnVersion="2024v5.0">
  <ReturnHeader binaryAttachmentCnt="0">
    <ReturnTs>2025-09-05T14:15:04-04:00</ReturnTs>
    <TaxPeriodEndDt>2024-12-31</TaxPeriodEndDt>
    <PreparerFirmGrp>
      <PreparerFirmEIN>200225806</PreparerFirmEIN>
      <PreparerFirmName>
        <BusinessNameLine1Txt>TRI-COUNTY BOOKKEEPERS INC</BusinessNameLine1Txt>
      </PreparerFirmName>
      <PreparerUSAddress>
        <AddressLine1Txt>2525 LAKE PINE DR STE A</AddressLine1Txt>
        <CityNm>SAINT JOSEPH</CityNm>
        <StateAbbreviationCd>MI</StateAbbreviationCd>
        <ZIPCd>49085</ZIPCd>
      </PreparerUSAddress>
    </PreparerFirmGrp>
    <ReturnTypeCd>990</ReturnTypeCd>
    <TaxPeriodBeginDt>2024-01-01</TaxPeriodBeginDt>
    <Filer>
      <EIN>432081926</EIN>
      <BusinessName>
        <BusinessNameLine1Txt>CLUSTERBUSTERS INC CO</BusinessNameLine1Txt>
        <BusinessNameLine2Txt>VIRGINIA PROFESSIONAL SERVICES LLC</BusinessNameLine2Txt>
      </BusinessName>
      <BusinessNameControlTxt>CLUS</BusinessNameControlTxt>
      <PhoneNum>6305423637</PhoneNum>
      <USAddress>
        <AddressLine1Txt>8401 MAYLAND DR STE P</AddressLine1Txt>
        <CityNm>RICHMOND</CityNm>
        <StateAbbreviationCd>VA</StateAbbreviationCd>
        <ZIPCd>23294</ZIPCd>
      </USAddress>
    </Filer>
    <BusinessOfficerGrp>
      <PersonNm>MATTHEW WELLEN</PersonNm>
      <PersonTitleTxt>TREASURER</PersonTitleTxt>
      <PhoneNum>6305423637</PhoneNum>
      <SignatureDt>2025-09-04</SignatureDt>
      <DiscussWithPaidPreparerInd>true</DiscussWithPaidPreparerInd>
    </BusinessOfficerGrp>
    <IRSResponsiblePrtyInfoCurrInd>true</IRSResponsiblePrtyInfoCurrInd>
    <PreparerPersonGrp>
      <PreparerPersonNm>FRANCISCO E VELASCO CPA</PreparerPersonNm>
      <PTIN>P02040864</PTIN>
      <PhoneNum>2699262191</PhoneNum>
      <PreparationDt>2025-09-04</PreparationDt>
    </PreparerPersonGrp>
    <TaxYr>2024</TaxYr>
    <BuildTS>2025-03-06 01:10:19Z</BuildTS>
  </ReturnHeader>
  <ReturnData documentCnt="4">
    <IRS990 documentId="RetDoc1" referenceDocumentId="RetDoc3">
      <PrincipalOfficerNm>MATTHEW WELLEN</PrincipalOfficerNm>
      <USAddress>
        <AddressLine1Txt>15 KENSINGTON CT</AddressLine1Txt>
        <CityNm>GLEN CARBON</CityNm>
        <StateAbbreviationCd>IL</StateAbbreviationCd>
        <ZIPCd>62034</ZIPCd>
      </USAddress>
      <GrossReceiptsAmt>275944</GrossReceiptsAmt>
      <GroupReturnForAffiliatesInd>false</GroupReturnForAffiliatesInd>
      <Organization501c3Ind>X</Organization501c3Ind>
      <WebsiteAddressTxt>WWW.CLUSTERBUSTERS.ORG</WebsiteAddressTxt>
      <TypeOfOrganizationCorpInd>X</TypeOfOrganizationCorpInd>
      <ActivityOrMissionDesc>CLUSTERBUSTERS INC IS A NON-PROFIT RESEARCH AND EDUCATIONAL ORGANIZATION DEDICATED TO FINDING EFFECTIVE TREATMENT OF CLUSTER HEADACHE WORLDWIDE. CLUSTERBUSTERS SUPPORTS THE EFFORTS INVOLVING THE RESEARCH, EDUCATION, SUPPORT AND ADVOCACY RELATED TO CLUSTER HEADACHES.</ActivityOrMissionDesc>
      <VotingMembersGoverningBodyCnt>7</VotingMembersGoverningBodyCnt>
      <VotingMembersIndependentCnt>7</VotingMembersIndependentCnt>
      <TotalEmployeeCnt>2</TotalEmployeeCnt>
      <TotalVolunteersCnt>35</TotalVolunteersCnt>
      <TotalGrossUBIAmt>0</TotalGrossUBIAmt>
      <PYContributionsGrantsAmt>141331</PYContributionsGrantsAmt>
      <CYContributionsGrantsAmt>235581</CYContributionsGrantsAmt>
      <PYProgramServiceRevenueAmt>40931</PYProgramServiceRevenueAmt>
      <CYProgramServiceRevenueAmt>40363</CYProgramServiceRevenueAmt>
      <CYInvestmentIncomeAmt>0</CYInvestmentIncomeAmt>
      <CYOtherRevenueAmt>0</CYOtherRevenueAmt>
      <PYTotalRevenueAmt>182262</PYTotalRevenueAmt>
      <CYTotalRevenueAmt>275944</CYTotalRevenueAmt>
      <CYGrantsAndSimilarPaidAmt>0</CYGrantsAndSimilarPaidAmt>
      <CYBenefitsPaidToMembersAmt>0</CYBenefitsPaidToMembersAmt>
      <PYSalariesCompEmpBnftPaidAmt>68874</PYSalariesCompEmpBnftPaidAmt>
      <CYSalariesCompEmpBnftPaidAmt>64849</CYSalariesCompEmpBnftPaidAmt>
      <CYTotalProfFndrsngExpnsAmt>0</CYTotalProfFndrsngExpnsAmt>
      <CYTotalFundraisingExpenseAmt>0</CYTotalFundraisingExpenseAmt>
      <PYOtherExpensesAmt>275674</PYOtherExpensesAmt>
      <CYOtherExpensesAmt>175936</CYOtherExpensesAmt>
      <PYTotalExpensesAmt>344548</PYTotalExpensesAmt>
      <CYTotalExpensesAmt>240785</CYTotalExpensesAmt>
      <PYRevenuesLessExpensesAmt>-162286</PYRevenuesLessExpensesAmt>
      <CYRevenuesLessExpensesAmt>35159</CYRevenuesLessExpensesAmt>
      <TotalAssetsBOYAmt>34340</TotalAssetsBOYAmt>
      <TotalAssetsEOYAmt>70827</TotalAssetsEOYAmt>
      <TotalLiabilitiesEOYAmt>1328</TotalLiabilitiesEOYAmt>
      <NetAssetsOrFundBalancesBOYAmt>34340</NetAssetsOrFundBalancesBOYAmt>
      <NetAssetsOrFundBalancesEOYAmt>69499</NetAssetsOrFundBalancesEOYAmt>
      <InfoInScheduleOPartIIIInd>X</InfoInScheduleOPartIIIInd>
      <MissionDesc>CLUSTERBUSTERS INC IS A NON-PROFIT RESEARCH AND EDUCATIONAL ORGANIZATION DEDICATED TO FINDING EFFECTIVE TREATMENT OF CLUSTER HEADACHE WORLDWIDE. CLUSTERBUSTERS SUPPORTS THE EFFORTS INVOLVING THE RESEARCH, EDUCATION, SUPPORT AND ADVOCACY RELATED TO CLUSTER HEADACHES.</MissionDesc>
      <SignificantNewProgramSrvcInd>false</SignificantNewProgramSrvcInd>
      <SignificantChangeInd>false</SignificantChangeInd>
      <ExpenseAmt>172438</ExpenseAmt>
      <RevenueAmt>40363</RevenueAmt>
      <Desc>FOR CHARITABLE AND EDUCATIONAL PURPOSES FOR FINDING CURE FOR CLUSTER HEADACHES.</Desc>
      <ProgSrvcAccomActyOtherGrp>
        <ExpenseAmt>63163</ExpenseAmt>
      </ProgSrvcAccomActyOtherGrp>
      <TotalOtherProgSrvcExpenseAmt>63163</TotalOtherProgSrvcExpenseAmt>
      <TotalProgramServiceExpensesAmt>235601</TotalProgramServiceExpensesAmt>
      <DescribedInSection501c3Ind referenceDocumentId="RetDoc4">true</DescribedInSection501c3Ind>
      <ScheduleBRequiredInd>false</ScheduleBRequiredInd>
      <PoliticalCampaignActyInd>false</PoliticalCampaignActyInd>
      <LobbyingActivitiesInd>false</LobbyingActivitiesInd>
      <SubjectToProxyTaxInd>false</SubjectToProxyTaxInd>
      <DonorAdvisedFundInd referenceDocumentId="RetDoc2">false</DonorAdvisedFundInd>
      <ConservationEasementsInd referenceDocumentId="RetDoc2">false</ConservationEasementsInd>
      <CollectionsOfArtInd referenceDocumentId="RetDoc2">false</CollectionsOfArtInd>
      <CreditCounselingInd referenceDocumentId="RetDoc2">false</CreditCounselingInd>
      <DonorRstrOrQuasiEndowmentsInd referenceDocumentId="RetDoc2">false</DonorRstrOrQuasiEndowmentsInd>
      <ReportLandBuildingEquipmentInd referenceDocumentId="RetDoc2">false</ReportLandBuildingEquipmentInd>
      <ReportInvestmentsOtherSecInd referenceDocumentId="RetDoc2">false</ReportInvestmentsOtherSecInd>
      <ReportProgramRelatedInvstInd referenceDocumentId="RetDoc2">false</ReportProgramRelatedInvstInd>
      <ReportOtherAssetsInd referenceDocumentId="RetDoc2">false</ReportOtherAssetsInd>
      <ReportOtherLiabilitiesInd referenceDocumentId="RetDoc2">true</ReportOtherLiabilitiesInd>
      <IncludeFIN48FootnoteInd referenceDocumentId="RetDoc2">false</IncludeFIN48FootnoteInd>
      <IndependentAuditFinclStmtInd referenceDocumentId="RetDoc2">false</IndependentAuditFinclStmtInd>
      <ConsolidatedAuditFinclStmtInd referenceDocumentId="RetDoc2">false</ConsolidatedAuditFinclStmtInd>
      <SchoolOperatingInd>false</SchoolOperatingInd>
      <ForeignOfficeInd>false</ForeignOfficeInd>
      <ForeignActivitiesInd>false</ForeignActivitiesInd>
      <MoreThan5000KToOrgInd>false</MoreThan5000KToOrgInd>
      <MoreThan5000KToIndividualsInd>false</MoreThan5000KToIndividualsInd>
      <ProfessionalFundraisingInd>false</ProfessionalFundraisingInd>
      <FundraisingActivitiesInd>false</FundraisingActivitiesInd>
      <GamingActivitiesInd>false</GamingActivitiesInd>
      <OperateHospitalInd>false</OperateHospitalInd>
      <GrantsToOrganizationsInd>false</GrantsToOrganizationsInd>
      <GrantsToIndividualsInd>false</GrantsToIndividualsInd>
      <ScheduleJRequiredInd>false</ScheduleJRequiredInd>
      <TaxExemptBondsInd>false</TaxExemptBondsInd>
      <EngagedInExcessBenefitTransInd>false</EngagedInExcessBenefitTransInd>
      <PYExcessBenefitTransInd>false</PYExcessBenefitTransInd>
      <LoanOutstandingInd>false</LoanOutstandingInd>
      <GrantToRelatedPersonInd>false</GrantToRelatedPersonInd>
      <BusinessRlnWithOrgMemInd>false</BusinessRlnWithOrgMemInd>
      <BusinessRlnWithFamMemInd>false</BusinessRlnWithFamMemInd>
      <BusinessRlnWith35CtrlEntInd>false</BusinessRlnWith35CtrlEntInd>
      <DeductibleNonCashContriInd>false</DeductibleNonCashContriInd>
      <DeductibleArtContributionInd>false</DeductibleArtContributionInd>
      <TerminateOperationsInd>false</TerminateOperationsInd>
      <PartialLiquidationInd>false</PartialLiquidationInd>
      <DisregardedEntityInd>false</DisregardedEntityInd>
      <RelatedEntityInd>false</RelatedEntityInd>
      <RelatedOrganizationCtrlEntInd>false</RelatedOrganizationCtrlEntInd>
      <TrnsfrExmptNonChrtblRltdOrgInd>false</TrnsfrExmptNonChrtblRltdOrgInd>
      <ActivitiesConductedPrtshpInd>false</ActivitiesConductedPrtshpInd>
      <ScheduleORequiredInd>false</ScheduleORequiredInd>
      <IRPDocumentCnt>5</IRPDocumentCnt>
      <IRPDocumentW2GCnt>0</IRPDocumentW2GCnt>
      <BackupWthldComplianceInd>false</BackupWthldComplianceInd>
      <EmployeeCnt>2</EmployeeCnt>
      <EmploymentTaxReturnsFiledInd>false</EmploymentTaxReturnsFiledInd>
      <UnrelatedBusIncmOverLimitInd>false</UnrelatedBusIncmOverLimitInd>
      <ForeignFinancialAccountInd>false</ForeignFinancialAccountInd>
      <ProhibitedTaxShelterTransInd>false</ProhibitedTaxShelterTransInd>
      <TaxablePartyNotificationInd>false</TaxablePartyNotificationInd>
      <NondeductibleContributionsInd>false</NondeductibleContributionsInd>
      <IndoorTanningServicesInd>false</IndoorTanningServicesInd>
      <SubjToTaxRmnrtnExPrchtPymtInd>false</SubjToTaxRmnrtnExPrchtPymtInd>
      <SubjectToExcsTaxNetInvstIncInd>false</SubjectToExcsTaxNetInvstIncInd>
      <GoverningBodyVotingMembersCnt>7</GoverningBodyVotingMembersCnt>
      <IndependentVotingMemberCnt>7</IndependentVotingMemberCnt>
      <FamilyOrBusinessRlnInd>false</FamilyOrBusinessRlnInd>
      <DelegationOfMgmtDutiesInd>false</DelegationOfMgmtDutiesInd>
      <ChangeToOrgDocumentsInd>false</ChangeToOrgDocumentsInd>
      <MaterialDiversionOrMisuseInd>false</MaterialDiversionOrMisuseInd>
      <MembersOrStockholdersInd>false</MembersOrStockholdersInd>
      <ElectionOfBoardMembersInd>false</ElectionOfBoardMembersInd>
      <DecisionsSubjectToApprovaInd>false</DecisionsSubjectToApprovaInd>
      <MinutesOfGoverningBodyInd>true</MinutesOfGoverningBodyInd>
      <MinutesOfCommitteesInd>true</MinutesOfCommitteesInd>
      <OfficerMailingAddressInd>false</OfficerMailingAddressInd>
      <LocalChaptersInd>false</LocalChaptersInd>
      <Form990ProvidedToGvrnBodyInd>false</Form990ProvidedToGvrnBodyInd>
      <ConflictOfInterestPolicyInd>false</ConflictOfInterestPolicyInd>
      <WhistleblowerPolicyInd>false</WhistleblowerPolicyInd>
      <DocumentRetentionPolicyInd>false</DocumentRetentionPolicyInd>
      <CompensationProcessCEOInd>false</CompensationProcessCEOInd>
      <CompensationProcessOtherInd>false</CompensationProcessOtherInd>
      <InvestmentInJointVentureInd>false</InvestmentInJointVentureInd>
      <UponRequestInd>X</UponRequestInd>
      <BooksInCareOfDetail>
        <PersonNm>MATTHEW WELLEN</PersonNm>
        <PhoneNum>6305423637</PhoneNum>
        <USAddress>
          <AddressLine1Txt>15 KENSINGTON CT</AddressLine1Txt>
          <CityNm>GLEN CARBON</CityNm>
          <StateAbbreviationCd>IL</StateAbbreviationCd>
          <ZIPCd>62034</ZIPCd>
        </USAddress>
      </BooksInCareOfDetail>
      <NoListedPersonsCompensatedInd>X</NoListedPersonsCompensatedInd>
      <Form990PartVIISectionAGrp>
        <PersonNm>EILEEN BREWER</PersonNm>
        <TitleTxt>PRESIDENT</TitleTxt>
        <AverageHoursPerWeekRt>30.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>MARY FRANKLIN</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
        <AverageHoursPerWeekRt>3.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>JOE MCKAY</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
        <AverageHoursPerWeekRt>12.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>ANNA WILLIAMS</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
        <AverageHoursPerWeekRt>12.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>AINSLIE COURSE</PersonNm>
        <TitleTxt>VP</TitleTxt>
        <AverageHoursPerWeekRt>40.00</AverageHoursPerWeekRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>JOE STONE</PersonNm>
        <TitleTxt>SECRETARY</TitleTxt>
        <AverageHoursPerWeekRt>5.00</AverageHoursPerWeekRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>MATTHEW WELLEN</PersonNm>
        <TitleTxt>TREASURER</TitleTxt>
        <AverageHoursPerWeekRt>7.00</AverageHoursPerWeekRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <FormerOfcrEmployeesListedInd>false</FormerOfcrEmployeesListedInd>
      <TotalCompGreaterThan150KInd>false</TotalCompGreaterThan150KInd>
      <CompensationFromOtherSrcsInd>false</CompensationFromOtherSrcsInd>
      <AllOtherContributionsAmt>235581</AllOtherContributionsAmt>
      <TotalContributionsAmt>235581</TotalContributionsAmt>
      <ProgramServiceRevenueGrp>
        <Desc>PROGRAM SERVICE REVENUE</Desc>
        <TotalRevenueColumnAmt>40363</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>40363</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <TotalProgramServiceRevenueAmt>40363</TotalProgramServiceRevenueAmt>
      <TotalRevenueGrp>
        <TotalRevenueColumnAmt>275944</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>40363</RelatedOrExemptFuncIncomeAmt>
      </TotalRevenueGrp>
      <InfoInScheduleOPartIXInd>X</InfoInScheduleOPartIXInd>
      <OtherSalariesAndWagesGrp>
        <TotalAmt>60001</TotalAmt>
        <ProgramServicesAmt>60001</ProgramServicesAmt>
      </OtherSalariesAndWagesGrp>
      <PayrollTaxesGrp>
        <TotalAmt>4848</TotalAmt>
        <ProgramServicesAmt>4848</ProgramServicesAmt>
      </PayrollTaxesGrp>
      <FeesForServicesAccountingGrp>
        <TotalAmt>5271</TotalAmt>
        <ProgramServicesAmt>2194</ProgramServicesAmt>
        <ManagementAndGeneralAmt>3077</ManagementAndGeneralAmt>
      </FeesForServicesAccountingGrp>
      <AdvertisingGrp>
        <TotalAmt>1707</TotalAmt>
        <ProgramServicesAmt>1707</ProgramServicesAmt>
      </AdvertisingGrp>
      <OfficeExpensesGrp>
        <TotalAmt>3290</TotalAmt>
        <ProgramServicesAmt>1183</ProgramServicesAmt>
        <ManagementAndGeneralAmt>2107</ManagementAndGeneralAmt>
      </OfficeExpensesGrp>
      <TravelGrp>
        <TotalAmt>4414</TotalAmt>
        <ProgramServicesAmt>4414</ProgramServicesAmt>
      </TravelGrp>
      <InsuranceGrp>
        <TotalAmt>1715</TotalAmt>
        <ProgramServicesAmt>1715</ProgramServicesAmt>
      </InsuranceGrp>
      <OtherExpensesGrp>
        <Desc>CONFERENCE RENT</Desc>
        <TotalAmt>41046</TotalAmt>
        <ProgramServicesAmt>41046</ProgramServicesAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>PPA EXPENSE</Desc>
        <TotalAmt>37395</TotalAmt>
        <ProgramServicesAmt>37395</ProgramServicesAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>GRANT EXPENSES</Desc>
        <TotalAmt>30000</TotalAmt>
        <ProgramServicesAmt>30000</ProgramServicesAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>PPA WEBINAR</Desc>
        <TotalAmt>10302</TotalAmt>
        <ProgramServicesAmt>10302</ProgramServicesAmt>
      </OtherExpensesGrp>
      <AllOtherExpensesGrp>
        <TotalAmt>40796</TotalAmt>
        <ProgramServicesAmt>40796</ProgramServicesAmt>
      </AllOtherExpensesGrp>
      <TotalFunctionalExpensesGrp>
        <TotalAmt>240785</TotalAmt>
        <ProgramServicesAmt>235601</ProgramServicesAmt>
        <ManagementAndGeneralAmt>5184</ManagementAndGeneralAmt>
        <FundraisingAmt>0</FundraisingAmt>
      </TotalFunctionalExpensesGrp>
      <CashNonInterestBearingGrp>
        <BOYAmt>34340</BOYAmt>
        <EOYAmt>70827</EOYAmt>
      </CashNonInterestBearingGrp>
      <TotalAssetsGrp>
        <BOYAmt>34340</BOYAmt>
        <EOYAmt>70827</EOYAmt>
      </TotalAssetsGrp>
      <OtherLiabilitiesGrp>
        <EOYAmt>1328</EOYAmt>
      </OtherLiabilitiesGrp>
      <TotalLiabilitiesGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>1328</EOYAmt>
      </TotalLiabilitiesGrp>
      <OrganizationFollowsFASB117Ind>X</OrganizationFollowsFASB117Ind>
      <NoDonorRestrictionNetAssetsGrp>
        <BOYAmt>34340</BOYAmt>
        <EOYAmt>69499</EOYAmt>
      </NoDonorRestrictionNetAssetsGrp>
      <TotalNetAssetsFundBalanceGrp>
        <BOYAmt>34340</BOYAmt>
        <EOYAmt>69499</EOYAmt>
      </TotalNetAssetsFundBalanceGrp>
      <TotLiabNetAssetsFundBalanceGrp>
        <BOYAmt>34340</BOYAmt>
        <EOYAmt>70827</EOYAmt>
      </TotLiabNetAssetsFundBalanceGrp>
      <ReconcilationRevenueExpnssAmt>35159</ReconcilationRevenueExpnssAmt>
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>false</AccountantCompileOrReviewInd>
      <FSAuditedInd>false</FSAuditedInd>
    </IRS990>
    <IRS990ScheduleA documentId="RetDoc4">
      <PubliclySupportedOrg509a2Ind>X</PubliclySupportedOrg509a2Ind>
      <GiftsGrantsContrisRcvd509Grp>
        <CurrentTaxYearMinus4YearsAmt>59025</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>61016</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>236205</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>141331</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>235581</CurrentTaxYearAmt>
        <TotalAmt>733158</TotalAmt>
      </GiftsGrantsContrisRcvd509Grp>
      <GrossReceiptsAdmissionsGrp>
        <CurrentTaxYearMinus4YearsAmt>41158</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>53727</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>47851</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>40931</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>40363</CurrentTaxYearAmt>
        <TotalAmt>224030</TotalAmt>
      </GrossReceiptsAdmissionsGrp>
      <Total509Grp>
        <CurrentTaxYearMinus4YearsAmt>100183</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>114743</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>284056</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>182262</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>275944</CurrentTaxYearAmt>
        <TotalAmt>957188</TotalAmt>
      </Total509Grp>
      <PublicSupportTotal509Amt>957188</PublicSupportTotal509Amt>
      <TotalSupportCalendarYearGrp>
        <CurrentTaxYearMinus4YearsAmt>100183</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>114743</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>284056</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>182262</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>275944</CurrentTaxYearAmt>
        <TotalAmt>957188</TotalAmt>
      </TotalSupportCalendarYearGrp>
      <PublicSupportCY509Pct>1.00000</PublicSupportCY509Pct>
      <PublicSupportPY509Pct>1.00000</PublicSupportPY509Pct>
      <InvestmentIncomeCYPct>0.00000</InvestmentIncomeCYPct>
      <InvestmentIncomePYPct>0.00000</InvestmentIncomePYPct>
      <ThirtyThrPctSuprtTestsCY509Ind>X</ThirtyThrPctSuprtTestsCY509Ind>
    </IRS990ScheduleA>
    <IRS990ScheduleD documentId="RetDoc2">
      <OtherLiabilitiesOrgGrp>
        <Desc>PAYROLL TAX LIABILITY</Desc>
        <Amt>1328</Amt>
      </OtherLiabilitiesOrgGrp>
      <TotalLiabilityAmt>1328</TotalLiabilityAmt>
    </IRS990ScheduleD>
    <IRS990ScheduleO documentId="RetDoc3">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990 - ORGANIZATION'S MISSION</FormAndLineReferenceDesc>
        <ExplanationTxt>CLUSTERBUSTERS INC IS A NON-PROFIT RESEARCH AND EDUCATIONAL ORGANIZATION DEDICATED TO FINDING EFFECTIVE TREATMENT OF CLUSTER HEADACHE WORLDWIDE. CLUSTERBUSTERS SUPPORTS THE EFFORTS INVOLVING THE RESEARCH, EDUCATION, SUPPORT AND ADVOCACY RELATED TO CLUSTER HEADACHES.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>NO REVIEW WAS OR WILL BE CONDUCTED.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>NO DOCUMENTS AVAILABLE TO THE PUBLIC</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART IX, LINE 24E</FormAndLineReferenceDesc>
        <ExplanationTxt>WEB SERVICES 7,418 0 0 CONFERENCE SUPPLIES 5,942 0 0 ACCREDITATION 5,300 0 0 PPA SYMPOSIUM 4,084 0 0 CONFERENCE SPEAKERS 3,636 0 0 PPA SURVEY 3,011 0 0 CONFERENCE SCHOLARSHIPS 2,953 0 0 NDPH DONATION 1,971 0 0 MEMBERSHIPS 1,457 0 0 SUPPLIES 1,446 0 0 PPA SUPPORT 1,100 0 0 SPONSORSHIP 1,025 0 0 BANK FEES 769 0 0 REGISTRATION FEES 250 0 0 CONFERENCE MEALS 248 0 0 ADVOCACY 186 0 0 TOTAL 40,796 0 0</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>