<?xml version="1.0" encoding="utf-8"?>
<Return xmlns="http://www.irs.gov/efile" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" returnVersion="2022v5.0">
  <ReturnHeader binaryAttachmentCnt="0">
    <ReturnTs>2024-04-24T18:59:30-04:00</ReturnTs>
    <TaxPeriodEndDt>2023-06-30</TaxPeriodEndDt>
    <PreparerFirmGrp>
      <PreparerFirmEIN>550533953</PreparerFirmEIN>
      <PreparerFirmName>
        <BusinessNameLine1Txt>COXHOLLIDAYOUNG PLLC</BusinessNameLine1Txt>
      </PreparerFirmName>
      <PreparerUSAddress>
        <AddressLine1Txt>101 N SPRING ST STE 200</AddressLine1Txt>
        <CityNm>MARTINSBURG</CityNm>
        <StateAbbreviationCd>WV</StateAbbreviationCd>
        <ZIPCd>254014311</ZIPCd>
      </PreparerUSAddress>
    </PreparerFirmGrp>
    <ReturnTypeCd>990EZ</ReturnTypeCd>
    <TaxPeriodBeginDt>2022-07-01</TaxPeriodBeginDt>
    <Filer>
      <EIN>872472691</EIN>
      <BusinessName>
        <BusinessNameLine1Txt>MRB FOUNDATION INC</BusinessNameLine1Txt>
      </BusinessName>
      <BusinessNameControlTxt>MRBF</BusinessNameControlTxt>
      <PhoneNum>3042622507</PhoneNum>
      <USAddress>
        <AddressLine1Txt>226 PILOT WAY</AddressLine1Txt>
        <CityNm>MARTINSBURG</CityNm>
        <StateAbbreviationCd>WV</StateAbbreviationCd>
        <ZIPCd>25405</ZIPCd>
      </USAddress>
    </Filer>
    <BusinessOfficerGrp>
      <PersonNm>NICOLAS DIEHL</PersonNm>
      <PersonTitleTxt>TREASURER</PersonTitleTxt>
      <PhoneNum>3042622507</PhoneNum>
      <SignatureDt>2024-04-23</SignatureDt>
    </BusinessOfficerGrp>
    <SigningOfficerGrp>
      <PersonFullName>
        <PersonFirstNm>NICOLAS</PersonFirstNm>
        <PersonLastNm>DIEHL</PersonLastNm>
      </PersonFullName>
      <SSN>XXX-XX-XXXX</SSN>
    </SigningOfficerGrp>
    <IRSResponsiblePrtyInfoCurrInd>true</IRSResponsiblePrtyInfoCurrInd>
    <PreparerPersonGrp>
      <PreparerPersonNm>CHARLI HEILMANN CPA</PreparerPersonNm>
      <PTIN>P01025746</PTIN>
      <PhoneNum>3042630891</PhoneNum>
      <PreparationDt>2024-04-23</PreparationDt>
    </PreparerPersonGrp>
    <TaxYr>2022</TaxYr>
    <BuildTS>2023-04-26 12:10:37Z</BuildTS>
  </ReturnHeader>
  <ReturnData documentCnt="4">
    <IRS990EZ documentId="RetDoc2" referenceDocumentId="RetDoc3">
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <WebsiteAddressTxt>N/A</WebsiteAddressTxt>
      <Organization501c3Ind referenceDocumentId="RetDoc4">X</Organization501c3Ind>
      <TypeOfOrganizationCorpInd>X</TypeOfOrganizationCorpInd>
      <GrossReceiptsAmt>199038</GrossReceiptsAmt>
      <InfoInScheduleOPartIInd>X</InfoInScheduleOPartIInd>
      <ContributionsGiftsGrantsEtcAmt>165648</ContributionsGiftsGrantsEtcAmt>
      <ProgramServiceRevenueAmt>33390</ProgramServiceRevenueAmt>
      <TotalRevenueAmt>199038</TotalRevenueAmt>
      <FeesAndOtherPymtToIndCntrctAmt>6390</FeesAndOtherPymtToIndCntrctAmt>
      <OtherExpensesTotalAmt>176369</OtherExpensesTotalAmt>
      <TotalExpensesAmt>182759</TotalExpensesAmt>
      <ExcessOrDeficitForYearAmt>16279</ExcessOrDeficitForYearAmt>
      <NetAssetsOrFundBalancesBOYAmt>29531</NetAssetsOrFundBalancesBOYAmt>
      <OtherChangesInNetAssetsAmt>-23115</OtherChangesInNetAssetsAmt>
      <NetAssetsOrFundBalancesEOYAmt>22695</NetAssetsOrFundBalancesEOYAmt>
      <InfoInScheduleOPartIIInd>X</InfoInScheduleOPartIIInd>
      <CashSavingsAndInvestmentsGrp>
        <BOYAmt>33364</BOYAmt>
        <EOYAmt>335118</EOYAmt>
      </CashSavingsAndInvestmentsGrp>
      <OtherAssetsTotalDetail>
        <BOYAmt>11500</BOYAmt>
        <EOYAmt>137592</EOYAmt>
      </OtherAssetsTotalDetail>
      <Form990TotalAssetsGrp>
        <BOYAmt>44864</BOYAmt>
        <EOYAmt>472710</EOYAmt>
      </Form990TotalAssetsGrp>
      <SumOfTotalLiabilitiesGrp>
        <BOYAmt>15333</BOYAmt>
        <EOYAmt>450015</EOYAmt>
      </SumOfTotalLiabilitiesGrp>
      <NetAssetsOrFundBalancesGrp>
        <BOYAmt>29531</BOYAmt>
        <EOYAmt>22695</EOYAmt>
      </NetAssetsOrFundBalancesGrp>
      <InfoInScheduleOPartIIIInd>X</InfoInScheduleOPartIIIInd>
      <PrimaryExemptPurposeTxt>THE FOUNDATIONS MISSION IS TO PROMOTE COMMUNITY RELATIONS, INCREASE PUBLIC AWARENESS AND UNDERSTANDING OF AVIATION, THE AVIATION INDUSTRY AND TO SUPPORT WORKFORCE RECRUITMENT AND RETENTION EFFORTS IN THE AVIATION INDUSTRY.</PrimaryExemptPurposeTxt>
      <ProgramSrvcAccomplishmentGrp>
        <DescriptionProgramSrvcAccomTxt>THE FOUNDATION PROMOTED COMMUNITY RELATIONS AND UNDERSTANDING OF AVIATION BY ORGANIZING VARIOUS EVENTS THAT BROUGHT TOGETHER THOUSANDS OF MEMBERS OF THE LOCAL COMMUNITY.</DescriptionProgramSrvcAccomTxt>
        <ProgramServiceExpensesAmt>152111</ProgramServiceExpensesAmt>
      </ProgramSrvcAccomplishmentGrp>
      <TotalProgramServiceExpensesAmt>152111</TotalProgramServiceExpensesAmt>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>JAMES MARSHALL</PersonNm>
        <TitleTxt>CHAIRMAN</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>LARRY DUNN</PersonNm>
        <TitleTxt>VICE CHAIRMA</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>0.50</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>MARIA LORENSEN</PersonNm>
        <TitleTxt>SECRETARY</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>0.50</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>NICOLAS DIEHL</PersonNm>
        <TitleTxt>TREASURER</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>3.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>JAMES WHITACRE</PersonNm>
        <TitleTxt>MEMBER</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>0.50</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>BART ROGERS</PersonNm>
        <TitleTxt>MEMBER</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>0.50</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <ActivitiesNotPreviouslyRptInd>false</ActivitiesNotPreviouslyRptInd>
      <ChgMadeToOrgnzngDocNotRptInd>false</ChgMadeToOrgnzngDocNotRptInd>
      <OrganizationHadUBIInd>false</OrganizationHadUBIInd>
      <SubjectToProxyTaxInd>false</SubjectToProxyTaxInd>
      <OrganizationDissolvedEtcInd>false</OrganizationDissolvedEtcInd>
      <Form1120PolFiledInd>false</Form1120PolFiledInd>
      <MadeLoansToFromOfficersInd>false</MadeLoansToFromOfficersInd>
      <EngagedInExcessBenefitTransInd>false</EngagedInExcessBenefitTransInd>
      <ProhibitedTaxShelterTransInd>false</ProhibitedTaxShelterTransInd>
      <BooksInCareOfDetail>
        <PersonNm>NICOLAS DIEHL</PersonNm>
        <USAddress>
          <AddressLine1Txt>226 PILOT WAY</AddressLine1Txt>
          <CityNm>MARTINSBURG</CityNm>
          <StateAbbreviationCd>WV</StateAbbreviationCd>
          <ZIPCd>25405</ZIPCd>
        </USAddress>
        <PhoneNum>3042622507</PhoneNum>
      </BooksInCareOfDetail>
      <ForeignFinancialAccountInd>false</ForeignFinancialAccountInd>
      <ForeignOfficeInd>false</ForeignOfficeInd>
      <DonorAdvisedFndsInd>false</DonorAdvisedFndsInd>
      <OperateHospitalInd>false</OperateHospitalInd>
      <TanningServicesProvidedInd>false</TanningServicesProvidedInd>
      <RelatedOrganizationCtrlEntInd>false</RelatedOrganizationCtrlEntInd>
      <TransactionWithControlEntInd>false</TransactionWithControlEntInd>
      <PoliticalCampaignActyInd>false</PoliticalCampaignActyInd>
      <LobbyingActivitiesInd>false</LobbyingActivitiesInd>
      <SchoolOperatingInd>false</SchoolOperatingInd>
      <TrnsfrExmptNonChrtblRltdOrgInd>false</TrnsfrExmptNonChrtblRltdOrgInd>
      <PartVIOfCompOfHghstPdEmplTxt>NONE</PartVIOfCompOfHghstPdEmplTxt>
      <PartVIHghstPdCntrctProfSrvcTxt>NONE</PartVIHghstPdCntrctProfSrvcTxt>
      <FiledScheduleAInd>true</FiledScheduleAInd>
    </IRS990EZ>
    <IRS990ScheduleA documentId="RetDoc4">
      <PubliclySupportedOrg509a2Ind>X</PubliclySupportedOrg509a2Ind>
      <GiftsGrantsContrisRcvd509Grp>
        <CurrentTaxYearMinus1YearAmt>14569</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>165648</CurrentTaxYearAmt>
        <TotalAmt>180217</TotalAmt>
      </GiftsGrantsContrisRcvd509Grp>
      <GrossReceiptsAdmissionsGrp>
        <CurrentTaxYearMinus1YearAmt>130246</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>33390</CurrentTaxYearAmt>
        <TotalAmt>163636</TotalAmt>
      </GrossReceiptsAdmissionsGrp>
      <Total509Grp>
        <CurrentTaxYearMinus1YearAmt>144815</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>199038</CurrentTaxYearAmt>
        <TotalAmt>343853</TotalAmt>
      </Total509Grp>
      <PublicSupportTotal509Amt>343853</PublicSupportTotal509Amt>
      <TotalSupportCalendarYearGrp>
        <CurrentTaxYearMinus1YearAmt>144815</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>199038</CurrentTaxYearAmt>
        <TotalAmt>343853</TotalAmt>
      </TotalSupportCalendarYearGrp>
      <PublicSupportCY509Pct>1.00000</PublicSupportCY509Pct>
      <PublicSupportPY509Pct>1.00000</PublicSupportPY509Pct>
      <InvestmentIncomeCYPct>0.00000</InvestmentIncomeCYPct>
      <InvestmentIncomePYPct>0.00000</InvestmentIncomePYPct>
      <ThirtyThrPctSuprtTestsCY509Ind>X</ThirtyThrPctSuprtTestsCY509Ind>
    </IRS990ScheduleA>
    <IRS990ScheduleB documentId="RetDoc1">
      <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>
    <IRS990ScheduleO documentId="RetDoc3">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990-EZ, PART I, LINE 16</FormAndLineReferenceDesc>
        <ExplanationTxt>EXPENSES ADVERTISING AND PROMOTION 11,414 INSURANCE 1,134 EQUIPMENT RENTAL 15,090 FIREWORKS 45,300 MATERIALS AND SUPPLIES 58,325 MISCELLANOUS 4,436 ENTERTAINMENT 26,735 ONLINE TICKET MANAGEMENT 6,339 CONTRACT SERVICES 5,874 250 TREES 1,004 HISTORY 718 TOTAL 176,369</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990-EZ, PART I, LINE 20</FormAndLineReferenceDesc>
        <ExplanationTxt>PRIOR PERIOD ADJUSTMENT -23,115</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990-EZ, PART II, LINE 24</FormAndLineReferenceDesc>
        <ExplanationTxt>GRANTS RECEIVABLE 0 5,600 ACCOUNTS RECEIVABLE 6,500 0 OTHER LOANS RECEIVABLE 0 16,110 PREPAID EXPENSES AND DEFERRED CHARGES 5,000 18,662 DEPOSIT ON PURCHASE - PLAYGROUND 0 97,220 TOTAL 11,500 137,592</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990-EZ, PART II, LINE 26</FormAndLineReferenceDesc>
        <ExplanationTxt>ACCOUNTS PAYABLE AND ACCRUED EXPENSES 15,333 0 DEFERRED REVENUE 0 450,015</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990-EZ, PART III</FormAndLineReferenceDesc>
        <ExplanationTxt>THE FOUNDATIONS MISSION IS TO PROMOTE COMMUNITY RELATIONS, INCREASE PUBLIC AWARENESS AND UNDERSTANDING OF AVIATION, THE AVIATION INDUSTRY AND TO SUPPORT WORKFORCE RECRUITMENT AND RETENTION EFFORTS IN THE AVIATION INDUSTRY.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>
