﻿<?xml version="1.0" encoding="utf-8"?>
<Return xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.irs.gov/efile" returnVersion="2024v5.1">
  <ReturnHeader binaryAttachmentCnt="0">
    <ReturnTs>2025-12-14T23:14:29-05:00</ReturnTs>
    <TaxPeriodEndDt>2025-06-30</TaxPeriodEndDt>
    <ReturnTypeCd>990EZ</ReturnTypeCd>
    <TaxPeriodBeginDt>2024-07-01</TaxPeriodBeginDt>
    <Filer>
      <EIN>452854884</EIN>
      <BusinessName>
        <BusinessNameLine1Txt>Sunnyvale Band Booster Club</BusinessNameLine1Txt>
      </BusinessName>
      <BusinessNameControlTxt>SUNN</BusinessNameControlTxt>
      <PhoneNum>7146797663</PhoneNum>
      <USAddress>
        <AddressLine1Txt>417 E Tripp Road</AddressLine1Txt>
        <CityNm>Sunnyvale</CityNm>
        <StateAbbreviationCd>TX</StateAbbreviationCd>
        <ZIPCd>75182</ZIPCd>
      </USAddress>
    </Filer>
    <BusinessOfficerGrp>
      <PersonNm>Sarah Orendorff</PersonNm>
      <PersonTitleTxt>Sunnyvale Band Boosters Treasurer</PersonTitleTxt>
      <PhoneNum>7146797663</PhoneNum>
      <SignatureDt>2025-12-16</SignatureDt>
      <DiscussWithPaidPreparerInd>false</DiscussWithPaidPreparerInd>
    </BusinessOfficerGrp>
    <TaxYr>2024</TaxYr>
    <BuildTS>2025-03-06 01:10:19Z</BuildTS>
  </ReturnHeader>
  <ReturnData documentCnt="6">
    <IRS990EZ documentId="IRS990EZ" softwareId="24020569" softwareVersionNum="V2.0" documentName="IRS990EZ" referenceDocumentName="IRS990ScheduleO ReasonableCauseExplanation TransfersPersonalBenefitsContractsDeclaration BinaryAttachment">
      <MethodOfAccountingCashInd>X</MethodOfAccountingCashInd>
      <Organization501c3Ind referenceDocumentId="IRS990ScheduleA1" referenceDocumentName="IRS990ScheduleA">X</Organization501c3Ind>
      <TypeOfOrganizationOtherInd>X</TypeOfOrganizationOtherInd>
      <TypeOfOrganizationOtherDesc>Booster Club</TypeOfOrganizationOtherDesc>
      <GrossReceiptsAmt>109829</GrossReceiptsAmt>
      <InfoInScheduleOPartIInd>X</InfoInScheduleOPartIInd>
      <ContributionsGiftsGrantsEtcAmt>58803</ContributionsGiftsGrantsEtcAmt>
      <ProgramServiceRevenueAmt>38091</ProgramServiceRevenueAmt>
      <InvestmentIncomeAmt>83</InvestmentIncomeAmt>
      <FundraisingGrossIncomeAmt fndrsngEventContriPrevRptAmt="23485" referenceDocumentName="IRS990ScheduleG">8354</FundraisingGrossIncomeAmt>
      <SpecialEventsDirectExpensesAmt>7294</SpecialEventsDirectExpensesAmt>
      <SpecialEventsNetIncomeLossAmt>1060</SpecialEventsNetIncomeLossAmt>
      <GrossSalesOfInventoryAmt>4498</GrossSalesOfInventoryAmt>
      <CostOfGoodsSoldAmt>2000</CostOfGoodsSoldAmt>
      <GrossProfitLossSlsOfInvntryAmt>2498</GrossProfitLossSlsOfInvntryAmt>
      <TotalRevenueAmt>100535</TotalRevenueAmt>
      <GrantsAndSimilarAmountsPaidAmt>2500</GrantsAndSimilarAmountsPaidAmt>
      <FeesAndOtherPymtToIndCntrctAmt>25444</FeesAndOtherPymtToIndCntrctAmt>
      <PrintingPublicationsPostageAmt>76</PrintingPublicationsPostageAmt>
      <OtherExpensesTotalAmt>63167</OtherExpensesTotalAmt>
      <TotalExpensesAmt>91187</TotalExpensesAmt>
      <ExcessOrDeficitForYearAmt>9348</ExcessOrDeficitForYearAmt>
      <NetAssetsOrFundBalancesBOYAmt>43243</NetAssetsOrFundBalancesBOYAmt>
      <OtherChangesInNetAssetsAmt>0</OtherChangesInNetAssetsAmt>
      <NetAssetsOrFundBalancesEOYAmt>52591</NetAssetsOrFundBalancesEOYAmt>
      <InfoInScheduleOPartIIInd>X</InfoInScheduleOPartIIInd>
      <CashSavingsAndInvestmentsGrp>
        <BOYAmt>43243</BOYAmt>
        <EOYAmt>48722</EOYAmt>
      </CashSavingsAndInvestmentsGrp>
      <OtherAssetsTotalDetail>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>3869</EOYAmt>
      </OtherAssetsTotalDetail>
      <Form990TotalAssetsGrp>
        <BOYAmt>43243</BOYAmt>
        <EOYAmt>52591</EOYAmt>
      </Form990TotalAssetsGrp>
      <NetAssetsOrFundBalancesGrp>
        <BOYAmt>43243</BOYAmt>
        <EOYAmt>52591</EOYAmt>
      </NetAssetsOrFundBalancesGrp>
      <PrimaryExemptPurposeTxt>To support promote and advance the educational and musical goals of the school band program thereby enriching the educational experience and personal development of the student participants.</PrimaryExemptPurposeTxt>
      <ProgramSrvcAccomplishmentGrp>
        <DescriptionProgramSrvcAccomTxt>Operations Support</DescriptionProgramSrvcAccomTxt>
        <GrantsAndAllocationsAmt>0</GrantsAndAllocationsAmt>
        <ProgramServiceExpensesAmt>67503</ProgramServiceExpensesAmt>
      </ProgramSrvcAccomplishmentGrp>
      <ProgramSrvcAccomplishmentGrp>
        <DescriptionProgramSrvcAccomTxt>Instructional Support</DescriptionProgramSrvcAccomTxt>
        <GrantsAndAllocationsAmt>0</GrantsAndAllocationsAmt>
        <ProgramServiceExpensesAmt>21669</ProgramServiceExpensesAmt>
      </ProgramSrvcAccomplishmentGrp>
      <ProgramSrvcAccomplishmentGrp>
        <DescriptionProgramSrvcAccomTxt>Welfare and logistics</DescriptionProgramSrvcAccomTxt>
        <GrantsAndAllocationsAmt>0</GrantsAndAllocationsAmt>
        <ProgramServiceExpensesAmt>2015</ProgramServiceExpensesAmt>
      </ProgramSrvcAccomplishmentGrp>
      <TotalProgramServiceExpensesAmt>91187</TotalProgramServiceExpensesAmt>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm referenceDocumentName="CompensationExplanation">Emily Phillips</PersonNm>
        <TitleTxt>President</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>10</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm referenceDocumentName="CompensationExplanation">Kelly Westfall</PersonNm>
        <TitleTxt>Vice President</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>10</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm referenceDocumentName="CompensationExplanation">Valerie Hanley</PersonNm>
        <TitleTxt>Treasurer</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>10</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <ActivitiesNotPreviouslyRptInd>false</ActivitiesNotPreviouslyRptInd>
      <ChgMadeToOrgnzngDocNotRptInd>false</ChgMadeToOrgnzngDocNotRptInd>
      <OrganizationHadUBIInd>false</OrganizationHadUBIInd>
      <SubjectToProxyTaxInd referenceDocumentName="IRS990ScheduleC">false</SubjectToProxyTaxInd>
      <OrganizationDissolvedEtcInd referenceDocumentName="IRS990ScheduleN BinaryAttachment">false</OrganizationDissolvedEtcInd>
      <Form1120PolFiledInd>false</Form1120PolFiledInd>
      <MadeLoansToFromOfficersInd>false</MadeLoansToFromOfficersInd>
      <EngagedInExcessBenefitTransInd referenceDocumentName="IRS990ScheduleL">false</EngagedInExcessBenefitTransInd>
      <ProhibitedTaxShelterTransInd>false</ProhibitedTaxShelterTransInd>
      <StatesWhereCopyOfReturnIsFldCd>TX</StatesWhereCopyOfReturnIsFldCd>
      <BooksInCareOfDetail>
        <PersonNm>Sarah Orendorff</PersonNm>
        <USAddress>
          <AddressLine1Txt>631 E Tripp Rd</AddressLine1Txt>
          <CityNm>SUNNYVALE</CityNm>
          <StateAbbreviationCd>TX</StateAbbreviationCd>
          <ZIPCd>75182</ZIPCd>
        </USAddress>
        <PhoneNum>7146797663</PhoneNum>
      </BooksInCareOfDetail>
      <ForeignFinancialAccountInd>false</ForeignFinancialAccountInd>
      <ForeignOfficeInd>false</ForeignOfficeInd>
      <DonorAdvisedFndsInd>false</DonorAdvisedFndsInd>
      <OperateHospitalInd>false</OperateHospitalInd>
      <TanningServicesProvidedInd>false</TanningServicesProvidedInd>
      <RelatedOrganizationCtrlEntInd>false</RelatedOrganizationCtrlEntInd>
      <TransactionWithControlEntInd>false</TransactionWithControlEntInd>
      <PoliticalCampaignActyInd referenceDocumentName="IRS990ScheduleC">false</PoliticalCampaignActyInd>
      <LobbyingActivitiesInd referenceDocumentName="IRS990ScheduleC">false</LobbyingActivitiesInd>
      <SchoolOperatingInd referenceDocumentName="IRS990ScheduleE">false</SchoolOperatingInd>
      <TrnsfrExmptNonChrtblRltdOrgInd>false</TrnsfrExmptNonChrtblRltdOrgInd>
      <PartVIOfCompOfHghstPdEmplTxt>NONE</PartVIOfCompOfHghstPdEmplTxt>
      <PartVIHghstPdCntrctProfSrvcTxt>NONE</PartVIHghstPdCntrctProfSrvcTxt>
      <FiledScheduleAInd>true</FiledScheduleAInd>
    </IRS990EZ>
    <IRS990ScheduleA documentId="IRS990ScheduleA1" documentName="IRS990ScheduleA">
      <PublicOrganization170Ind>X</PublicOrganization170Ind>
      <GiftsGrantsContriRcvd170Grp>
        <CurrentTaxYearMinus4YearsAmt>32245</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>18422</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>34675</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>17778</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>58803</CurrentTaxYearAmt>
        <TotalAmt>161923</TotalAmt>
      </GiftsGrantsContriRcvd170Grp>
      <TaxRevLeviedOrgnztnlBnft170Grp>
        <CurrentTaxYearMinus4YearsAmt>0</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>0</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>0</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>0</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>0</CurrentTaxYearAmt>
        <TotalAmt>0</TotalAmt>
      </TaxRevLeviedOrgnztnlBnft170Grp>
      <GovtFurnSrvcFcltsVl170Grp>
        <CurrentTaxYearMinus4YearsAmt>0</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>0</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>0</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>0</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>0</CurrentTaxYearAmt>
        <TotalAmt>0</TotalAmt>
      </GovtFurnSrvcFcltsVl170Grp>
      <TotalCalendarYear170Grp>
        <CurrentTaxYearMinus4YearsAmt>32245</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>18422</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>34675</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>17778</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>58803</CurrentTaxYearAmt>
        <TotalAmt>161923</TotalAmt>
      </TotalCalendarYear170Grp>
      <SubstantialContributorsTotAmt>54523</SubstantialContributorsTotAmt>
      <PublicSupportTotal170Amt>107400</PublicSupportTotal170Amt>
      <GrossInvestmentIncome170Grp>
        <CurrentTaxYearMinus4YearsAmt>0</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>0</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>0</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>0</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>83</CurrentTaxYearAmt>
        <TotalAmt>83</TotalAmt>
      </GrossInvestmentIncome170Grp>
      <UnrelatedBusinessNetIncm170Grp>
        <CurrentTaxYearMinus4YearsAmt>0</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>0</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>0</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>0</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>0</CurrentTaxYearAmt>
        <TotalAmt>0</TotalAmt>
      </UnrelatedBusinessNetIncm170Grp>
      <OtherIncome170Grp>
        <CurrentTaxYearMinus4YearsAmt>0</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>0</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>0</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>0</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>0</CurrentTaxYearAmt>
        <TotalAmt>0</TotalAmt>
      </OtherIncome170Grp>
      <TotalSupportAmt>162006</TotalSupportAmt>
      <GrossReceiptsRltdActivitiesAmt>159889</GrossReceiptsRltdActivitiesAmt>
      <PublicSupportCY170Pct>0.6629</PublicSupportCY170Pct>
      <PublicSupportPY170Pct>0.9656</PublicSupportPY170Pct>
      <ThirtyThrPctSuprtTestsCY170Ind>X</ThirtyThrPctSuprtTestsCY170Ind>
    </IRS990ScheduleA>
    <IRS990ScheduleB documentId="IRS990ScheduleB1" documentName="IRS990ScheduleB">
      <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>
    <IRS990ScheduleG documentId="IRS990ScheduleG1" documentName="IRS990ScheduleG">
      <FundraisingEventInformationGrp>
        <Event1Nm>March a Thon</Event1Nm>
        <GrossReceiptsEvent1Amt>18071</GrossReceiptsEvent1Amt>
        <CharitableContriEvent1Amt>18071</CharitableContriEvent1Amt>
        <GrossRevenueEvent1Amt>0</GrossRevenueEvent1Amt>
        <CashPrizesEvent1Amt>200</CashPrizesEvent1Amt>
        <NonCashPrizesEvent1Amt>0</NonCashPrizesEvent1Amt>
        <RentFacilityCostsEvent1Amt>0</RentFacilityCostsEvent1Amt>
        <FoodAndBeverageEvent1Amt>0</FoodAndBeverageEvent1Amt>
        <EntertainmentEvent1Amt>0</EntertainmentEvent1Amt>
        <OtherDirectExpensesEvent1Amt>2932</OtherDirectExpensesEvent1Amt>
        <Event2Nm>SMI</Event2Nm>
        <GrossReceiptsEvent2Amt>6831</GrossReceiptsEvent2Amt>
        <CharitableContriEvent2Amt>0</CharitableContriEvent2Amt>
        <GrossRevenueEvent2Amt>6831</GrossRevenueEvent2Amt>
        <CashPrizesEvent2Amt>0</CashPrizesEvent2Amt>
        <NonCashPrizesEvent2Amt>0</NonCashPrizesEvent2Amt>
        <RentFacilityCostsEvent2Amt>0</RentFacilityCostsEvent2Amt>
        <FoodAndBeverageEvent2Amt>80</FoodAndBeverageEvent2Amt>
        <EntertainmentEvent2Amt>0</EntertainmentEvent2Amt>
        <OtherDirectExpensesEvent2Amt>2182</OtherDirectExpensesEvent2Amt>
        <OtherEventsTotalCnt>1</OtherEventsTotalCnt>
        <GrossReceiptsOtherEventsAmt>5414</GrossReceiptsOtherEventsAmt>
        <CharitableContriOtherEventsAmt>5414</CharitableContriOtherEventsAmt>
        <GrossRevenueOtherEventsAmt>0</GrossRevenueOtherEventsAmt>
        <CashPrizesOtherEventsAmt>0</CashPrizesOtherEventsAmt>
        <NonCashPrizesOtherEventsAmt>0</NonCashPrizesOtherEventsAmt>
        <RentFcltyCostsOtherEventsAmt>0</RentFcltyCostsOtherEventsAmt>
        <FoodAndBeverageOtherEventsAmt>0</FoodAndBeverageOtherEventsAmt>
        <EntertainmentOtherEventsAmt>0</EntertainmentOtherEventsAmt>
        <OthDirectExpnssOtherEventsAmt>800</OthDirectExpnssOtherEventsAmt>
        <GrossReceiptsTotalAmt>30316</GrossReceiptsTotalAmt>
        <CharitableContributionsTotAmt>23485</CharitableContributionsTotAmt>
        <GrossRevenueTotalEventsAmt>6831</GrossRevenueTotalEventsAmt>
        <CashPrizesTotalEventsAmt>200</CashPrizesTotalEventsAmt>
        <NonCashPrizesTotalEventsAmt>0</NonCashPrizesTotalEventsAmt>
        <RentFcltyCostsTotalEventsAmt>0</RentFcltyCostsTotalEventsAmt>
        <FoodAndBeverageTotalEventsAmt>80</FoodAndBeverageTotalEventsAmt>
        <EntertainmentTotalEventsAmt>0</EntertainmentTotalEventsAmt>
        <OthDirectExpnssTotalEventsAmt>5914</OthDirectExpnssTotalEventsAmt>
        <DirectExpenseSummaryEventsAmt>6194</DirectExpenseSummaryEventsAmt>
        <NetIncomeSummaryAmt>637</NetIncomeSummaryAmt>
      </FundraisingEventInformationGrp>
    </IRS990ScheduleG>
    <IRS990ScheduleO documentId="IRS990ScheduleO1" documentName="IRS990ScheduleO">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part I, line 10</FormAndLineReferenceDesc>
        <ExplanationTxt>| Activity:, Grantee Name:, Grantee Address:, Amount:, Relationship:| Scholarships, grantee, "Scholarships", $2500.00, No Relationship|</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part I, line 16</FormAndLineReferenceDesc>
        <ExplanationTxt>| Other Expenses:, Amount:| Marching show, $7213.00| Meals and snacks, $11343.00| Show Concert shirts, $5242.00| Band gear Music Equipment, $21974.00| Activities, $3562.00| Entertainment Gifts, $5105.00| Band posters Senior banners, $2522.00| Band Banquet, $1776.00| Instrument Repairs, $2040.00| Uniform Cleaning, $1076.00| Admin expenses, $1314.00|</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part II, line 24</FormAndLineReferenceDesc>
        <ExplanationTxt>| Asset Name:, BOY Amount:, EOY Amount:| Inventory, 0, $3869|</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
    <ReasonableCauseExplanation documentId="ReasonableCauseExplanation" softwareId="24020569" softwareVersionNum="V2.0" documentName="ReasonableCauseExplanation">
      <ExplanationTxt>To Whom It May Concern Please accept this letter as an explanation for the late filing of the 990-EZ for the tax period ending June 30 2025 for Sunnyvale Band Booster Club EIN: 45-2854884. I sincerely regret the delay. I recently assumed the voluntary position of Treasurer for the organization on June 30th 2025. Due to the transition period and my substantial professional and personal commitments the filing deadline regrettably slipped my mind. I take full responsibility for this oversight. I have now completed and filed the return as quickly as possible upon realizing the error. To ensure this does not happen again I have implemented the following steps: Systemized Deadlines: I have established a permanent recurring reminder for the filing deadline including necessary preparation time on the organizations shared calendar. Created a Policy: I am drafting a transition checklist for future treasurers to clearly outline all critical compliance deadlines. We are committed to maintaining compliance and transparency as a 501c3 organization. We appreciate your understanding in this matter. Sincerely Sarah Orendorff Treasurer Sunnyvale Band Booster Club</ExplanationTxt>
    </ReasonableCauseExplanation>
  </ReturnData>
</Return>