﻿<?xml version="1.0" encoding="utf-8"?>
<Return xmlns="http://www.irs.gov/efile" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" returnVersion="2024v5.2" xsi:schemaLocation="http://www.irs.gov/efile">
  <ReturnHeader binaryAttachmentCnt="0">
    <ReturnTs>2025-11-05T08:33:26-08:00</ReturnTs>
    <TaxPeriodEndDt>2024-12-31</TaxPeriodEndDt>
    <PreparerFirmGrp>
      <PreparerFirmEIN>461538048</PreparerFirmEIN>
      <PreparerFirmName>
        <BusinessNameLine1Txt>Esposito &amp; Wiener LLC</BusinessNameLine1Txt>
      </PreparerFirmName>
      <PreparerUSAddress>
        <AddressLine1Txt>1 Industrial Way W</AddressLine1Txt>
        <CityNm>Eatontown</CityNm>
        <StateAbbreviationCd>NJ</StateAbbreviationCd>
        <ZIPCd>07724</ZIPCd>
      </PreparerUSAddress>
    </PreparerFirmGrp>
    <ReturnTypeCd>990PF</ReturnTypeCd>
    <TaxPeriodBeginDt>2024-01-01</TaxPeriodBeginDt>
    <Filer>
      <EIN>876966321</EIN>
      <BusinessName>
        <BusinessNameLine1Txt>THYLAN FOUNDATION</BusinessNameLine1Txt>
        <BusinessNameLine2Txt>CO THYLAN ASSOCIATES</BusinessNameLine2Txt>
      </BusinessName>
      <BusinessNameControlTxt>THYL</BusinessNameControlTxt>
      <PhoneNum>2128882000</PhoneNum>
      <USAddress>
        <AddressLine1Txt>805 THIRD AVENUE 10TH FLOOR</AddressLine1Txt>
        <CityNm>NEW YORK</CityNm>
        <StateAbbreviationCd>NY</StateAbbreviationCd>
        <ZIPCd>10022</ZIPCd>
      </USAddress>
    </Filer>
    <BusinessOfficerGrp>
      <PersonNm>LENARD THYLAN</PersonNm>
      <PersonTitleTxt>President</PersonTitleTxt>
      <SignatureDt>2025-11-05</SignatureDt>
      <DiscussWithPaidPreparerInd>true</DiscussWithPaidPreparerInd>
    </BusinessOfficerGrp>
    <IRSResponsiblePrtyInfoCurrInd>true</IRSResponsiblePrtyInfoCurrInd>
    <PreparerPersonGrp>
      <PreparerPersonNm>HARRY W ESPOSITO</PreparerPersonNm>
      <PTIN>P00448039</PTIN>
      <PhoneNum>7325448111</PhoneNum>
      <SelfEmployedInd>X</SelfEmployedInd>
    </PreparerPersonGrp>
    <TaxYr>2024</TaxYr>
    <BuildTS>2025-03-06 01:10:19Z</BuildTS>
  </ReturnHeader>
  <ReturnData documentCnt="6">
    <IRS990PF documentId="IRS990PF" referenceDocumentId="GeneralExplanation" softwareId="24020490" softwareVersionNum="2024v5.2">
      <InitialReturnInd>X</InitialReturnInd>
      <Organization501c3ExemptPFInd>X</Organization501c3ExemptPFInd>
      <FMVAssetsEOYAmt>533220</FMVAssetsEOYAmt>
      <MethodOfAccountingCashInd>X</MethodOfAccountingCashInd>
      <AnalysisOfRevenueAndExpenses>
        <ContriRcvdRevAndExpnssAmt>549526</ContriRcvdRevAndExpnssAmt>
        <DividendsRevAndExpnssAmt>3582</DividendsRevAndExpnssAmt>
        <DividendsNetInvstIncmAmt>3582</DividendsNetInvstIncmAmt>
        <DividendsAdjNetIncmAmt>3582</DividendsAdjNetIncmAmt>
        <OtherIncomeRevAndExpnssAmt referenceDocumentId="OtherIncomeSchedule2">318</OtherIncomeRevAndExpnssAmt>
        <TotalRevAndExpnssAmt>553426</TotalRevAndExpnssAmt>
        <TotalNetInvstIncmAmt>3582</TotalNetInvstIncmAmt>
        <TotalAdjNetIncmAmt>3582</TotalAdjNetIncmAmt>
        <LegalFeesRevAndExpnssAmt referenceDocumentId="LegalFeesSchedule">2896</LegalFeesRevAndExpnssAmt>
        <OtherExpensesRevAndExpnssAmt referenceDocumentId="OtherExpensesSchedule AmortizationSchedule">600</OtherExpensesRevAndExpnssAmt>
        <TotOprExpensesRevAndExpnssAmt>3496</TotOprExpensesRevAndExpnssAmt>
        <TotOprExpensesNetInvstIncmAmt>0</TotOprExpensesNetInvstIncmAmt>
        <TotOprExpensesDsbrsChrtblAmt>0</TotOprExpensesDsbrsChrtblAmt>
        <ContriPaidRevAndExpnssAmt>0</ContriPaidRevAndExpnssAmt>
        <ContriPaidDsbrsChrtblAmt>0</ContriPaidDsbrsChrtblAmt>
        <TotalExpensesRevAndExpnssAmt>3496</TotalExpensesRevAndExpnssAmt>
        <TotalExpensesNetInvstIncmAmt>0</TotalExpensesNetInvstIncmAmt>
        <TotalExpensesDsbrsChrtblAmt>0</TotalExpensesDsbrsChrtblAmt>
        <ExcessRevenueOverExpensesAmt>549930</ExcessRevenueOverExpensesAmt>
        <NetInvestmentIncomeAmt>3582</NetInvestmentIncomeAmt>
        <AdjustedNetIncomeAmt>3582</AdjustedNetIncomeAmt>
      </AnalysisOfRevenueAndExpenses>
      <Form990PFBalanceSheetsGrp>
        <CashEOYAmt>3900</CashEOYAmt>
        <OtherInvestmentsEOYAmt referenceDocumentId="InvestmentsOtherSchedule2">546030</OtherInvestmentsEOYAmt>
        <OtherInvestmentsEOYFMVAmt>533220</OtherInvestmentsEOYFMVAmt>
        <TotalAssetsEOYAmt>549930</TotalAssetsEOYAmt>
        <TotalAssetsEOYFMVAmt>533220</TotalAssetsEOYFMVAmt>
        <TotalLiabilitiesEOYAmt>0</TotalLiabilitiesEOYAmt>
        <OrganizationFollowsFASB117Ind>X</OrganizationFollowsFASB117Ind>
        <NoDonorRstrNetAssestsEOYAmt>549930</NoDonorRstrNetAssestsEOYAmt>
        <TotNetAstOrFundBalancesEOYAmt>549930</TotNetAstOrFundBalancesEOYAmt>
        <TotalLiabilitiesNetAstBOYAmt>0</TotalLiabilitiesNetAstBOYAmt>
        <TotalLiabilitiesNetAstEOYAmt>549930</TotalLiabilitiesNetAstEOYAmt>
      </Form990PFBalanceSheetsGrp>
      <ChgInNetAssetsFundBalancesGrp>
        <ExcessRevenueOverExpensesAmt>549930</ExcessRevenueOverExpensesAmt>
        <SubtotalAmt>549930</SubtotalAmt>
        <TotNetAstOrFundBalancesEOYAmt>549930</TotNetAstOrFundBalancesEOYAmt>
      </ChgInNetAssetsFundBalancesGrp>
      <ExciseTaxBasedOnInvstIncmGrp>
        <InvestmentIncomeExciseTaxAmt>50</InvestmentIncomeExciseTaxAmt>
        <SubtotalAmt>50</SubtotalAmt>
        <TaxBasedOnInvestmentIncomeAmt>50</TaxBasedOnInvestmentIncomeAmt>
        <ExtsnRequestIncomeTaxPaidAmt>50</ExtsnRequestIncomeTaxPaidAmt>
        <TotalPaymentsAndCreditsAmt>50</TotalPaymentsAndCreditsAmt>
        <TaxDueAmt>0</TaxDueAmt>
        <AppliedToESTaxAmt>0</AppliedToESTaxAmt>
      </ExciseTaxBasedOnInvstIncmGrp>
      <StatementsRegardingActyGrp>
        <LegislativePoliticalActyInd>false</LegislativePoliticalActyInd>
        <MoreThan100SpentInd>false</MoreThan100SpentInd>
        <Form1120POLFiledInd>false</Form1120POLFiledInd>
        <ActivitiesNotPreviouslyRptInd>false</ActivitiesNotPreviouslyRptInd>
        <ChangesToArticlesOrBylawsInd>false</ChangesToArticlesOrBylawsInd>
        <UnrelatedBusIncmOverLimitInd>false</UnrelatedBusIncmOverLimitInd>
        <OrganizationDissolvedEtcInd>false</OrganizationDissolvedEtcInd>
        <Section508eRqrSatisfiedInd>false</Section508eRqrSatisfiedInd>
        <AtLeast5000InAssetsInd>true</AtLeast5000InAssetsInd>
        <Form990PFFiledWithAttyGenInd>true</Form990PFFiledWithAttyGenInd>
        <PrivateOperatingFoundationInd>false</PrivateOperatingFoundationInd>
        <NewSubstantialContributorsInd>false</NewSubstantialContributorsInd>
        <OwnControlledEntityInd>false</OwnControlledEntityInd>
        <DonorAdvisedFundInd>false</DonorAdvisedFundInd>
        <ComplyWithPublicInspRqrInd>true</ComplyWithPublicInspRqrInd>
        <WebsiteAddressTxt>N/A</WebsiteAddressTxt>
        <PersonsWithBooksName>
          <BusinessNameLine1Txt>LENARD THYLAN</BusinessNameLine1Txt>
        </PersonsWithBooksName>
        <PhoneNum>2128882000</PhoneNum>
        <LocationOfBooksUSAddress>
          <AddressLine1Txt>710 PARK AVENUE APT 6C</AddressLine1Txt>
          <CityNm>NEW YORK</CityNm>
          <StateAbbreviationCd>NY</StateAbbreviationCd>
          <ZIPCd>10021</ZIPCd>
        </LocationOfBooksUSAddress>
        <ForeignAccountsQuestionInd>false</ForeignAccountsQuestionInd>
      </StatementsRegardingActyGrp>
      <StatementsRegardingActy4720Grp>
        <SaleOrExchDisqualifiedPrsnInd>false</SaleOrExchDisqualifiedPrsnInd>
        <BrrwOrLendDisqualifiedPrsnInd>false</BrrwOrLendDisqualifiedPrsnInd>
        <FurnGoodsDisqualifiedPrsnInd>false</FurnGoodsDisqualifiedPrsnInd>
        <PayCompDisqualifiedPrsnInd>false</PayCompDisqualifiedPrsnInd>
        <TransferAstDisqualifiedPrsnInd>false</TransferAstDisqualifiedPrsnInd>
        <PaymentToGovernmentOfficialInd>false</PaymentToGovernmentOfficialInd>
        <ActsFailToQlfyAsExceptionsInd>false</ActsFailToQlfyAsExceptionsInd>
        <UncorrectedPriorActsInd>false</UncorrectedPriorActsInd>
        <UndistributedIncomePYInd>false</UndistributedIncomePYInd>
        <BusinessHoldingsInd>false</BusinessHoldingsInd>
        <JeopardyInvestmentsInd>false</JeopardyInvestmentsInd>
        <UncorrectedPYJeopardyInvstInd>false</UncorrectedPYJeopardyInvstInd>
        <InfluenceLegislationInd>false</InfluenceLegislationInd>
        <InfluenceElectionInd>false</InfluenceElectionInd>
        <GrantsToIndividualsInd>false</GrantsToIndividualsInd>
        <GrantsToOrganizationsInd>false</GrantsToOrganizationsInd>
        <NoncharitablePurposeInd>false</NoncharitablePurposeInd>
        <RcvFndsToPayPrsnlBnftCntrctInd>false</RcvFndsToPayPrsnlBnftCntrctInd>
        <PayPremiumsPrsnlBnftCntrctInd>false</PayPremiumsPrsnlBnftCntrctInd>
        <ProhibitedTaxShelterTransInd>false</ProhibitedTaxShelterTransInd>
        <SubjToTaxRmnrtnExPrchtPymtInd>false</SubjToTaxRmnrtnExPrchtPymtInd>
      </StatementsRegardingActy4720Grp>
      <OfficerDirTrstKeyEmplInfoGrp>
        <OfficerDirTrstKeyEmplGrp>
          <PersonNm>LENARD THYLAN</PersonNm>
          <USAddress>
            <AddressLine1Txt>710 PARK AVENUE</AddressLine1Txt>
            <CityNm>NEW YORK</CityNm>
            <StateAbbreviationCd>NY</StateAbbreviationCd>
            <ZIPCd>10021</ZIPCd>
          </USAddress>
          <TitleTxt>President</TitleTxt>
          <AverageHrsPerWkDevotedToPosRt>0.00</AverageHrsPerWkDevotedToPosRt>
          <CompensationAmt>0</CompensationAmt>
        </OfficerDirTrstKeyEmplGrp>
        <OfficerDirTrstKeyEmplGrp>
          <PersonNm>BERNICE THYLAN</PersonNm>
          <USAddress>
            <AddressLine1Txt>322 SPYGLASS WAY</AddressLine1Txt>
            <CityNm>JUPITER</CityNm>
            <StateAbbreviationCd>FL</StateAbbreviationCd>
            <ZIPCd>33477</ZIPCd>
          </USAddress>
          <TitleTxt>Vice President</TitleTxt>
          <AverageHrsPerWkDevotedToPosRt>0.00</AverageHrsPerWkDevotedToPosRt>
          <CompensationAmt>0</CompensationAmt>
        </OfficerDirTrstKeyEmplGrp>
        <CompOfHghstPdEmplOrNONETxt>NONE</CompOfHghstPdEmplOrNONETxt>
        <CompOfHghstPdCntrctOrNONETxt>NONE</CompOfHghstPdCntrctOrNONETxt>
      </OfficerDirTrstKeyEmplInfoGrp>
      <MinimumInvestmentReturnGrp>
        <AverageMonthlyFMVOfSecAmt>44435</AverageMonthlyFMVOfSecAmt>
        <AverageMonthlyCashBalancesAmt>0</AverageMonthlyCashBalancesAmt>
        <FMVAllOtherNoncharitableAstAmt>0</FMVAllOtherNoncharitableAstAmt>
        <TotalFMVOfUnusedAssetsAmt>44435</TotalFMVOfUnusedAssetsAmt>
        <ReductionClaimedAmt>0</ReductionClaimedAmt>
        <AdjustedTotalFMVOfUnusedAstAmt>44435</AdjustedTotalFMVOfUnusedAstAmt>
        <CashDeemedCharitableAmt>667</CashDeemedCharitableAmt>
        <NetVlNoncharitableAssetsAmt>43768</NetVlNoncharitableAssetsAmt>
        <MinimumInvestmentReturnAmt>2188</MinimumInvestmentReturnAmt>
      </MinimumInvestmentReturnGrp>
      <DistributableAmountGrp>
        <MinimumInvestmentReturnAmt>2188</MinimumInvestmentReturnAmt>
        <TaxBasedOnInvestmentIncomeAmt>50</TaxBasedOnInvestmentIncomeAmt>
        <TotalTaxAmt>50</TotalTaxAmt>
        <DistributableBeforeAdjAmt>2138</DistributableBeforeAdjAmt>
        <DistributableBeforeDedAmt>2138</DistributableBeforeDedAmt>
        <DistributableAsAdjustedAmt>2138</DistributableAsAdjustedAmt>
      </DistributableAmountGrp>
      <PFQualifyingDistributionsGrp>
        <ExpensesAndContributionsAmt>0</ExpensesAndContributionsAmt>
      </PFQualifyingDistributionsGrp>
      <UndistributedIncomeGrp>
        <DistributableAsAdjustedAmt>2138</DistributableAsAdjustedAmt>
        <TreatedAsDistriFromCorpusAmt>0</TreatedAsDistriFromCorpusAmt>
        <UndistributedIncomeCYAmt>2138</UndistributedIncomeCYAmt>
      </UndistributedIncomeGrp>
      <SupplementaryInformationGrp>
        <ApplicationSubmissionInfoGrp>
          <RecipientPersonNm>THYLAN FOUNDATION</RecipientPersonNm>
          <RecipientUSAddress>
            <AddressLine1Txt>805 THIRD AVENUE 10TH FLOOR</AddressLine1Txt>
            <CityNm>NEW YORK</CityNm>
            <StateAbbreviationCd>NY</StateAbbreviationCd>
            <ZIPCd>10022</ZIPCd>
          </RecipientUSAddress>
          <RecipientPhoneNum>2128882000</RecipientPhoneNum>
          <RecipientEmailAddressTxt>NONE</RecipientEmailAddressTxt>
          <FormAndInfoAndMaterialsTxt>NO SPECIAL FORMS</FormAndInfoAndMaterialsTxt>
          <SubmissionDeadlinesTxt>NONE</SubmissionDeadlinesTxt>
          <RestrictionsOnAwardsTxt>NO RESTRICTION, ALL CONTRIBUTIONS MADE BY THE FOUNDATION ARE TO PUBLICILY SUPPORTED CHARITIES.</RestrictionsOnAwardsTxt>
        </ApplicationSubmissionInfoGrp>
      </SupplementaryInformationGrp>
      <AnalysisIncomeProducingActyGrp>
        <DividendsAndInterestFromSecDtl>
          <RelatedOrExemptFunctionIncmAmt>3582</RelatedOrExemptFunctionIncmAmt>
        </DividendsAndInterestFromSecDtl>
        <OtherInvestmentIncomeGrp>
          <RelatedOrExemptFunctionIncmAmt>318</RelatedOrExemptFunctionIncmAmt>
        </OtherInvestmentIncomeGrp>
        <SubtotalsIncmProducingActyGrp>
          <RelatedOrExemptFunctionIncmAmt>3900</RelatedOrExemptFunctionIncmAmt>
        </SubtotalsIncmProducingActyGrp>
        <TotalIncomeProducingActyAmt>3900</TotalIncomeProducingActyAmt>
      </AnalysisIncomeProducingActyGrp>
      <TrnsfrTransRlnNonchrtblEOGrp>
        <TrnsfrOfCashToNonchrtblEOInd>false</TrnsfrOfCashToNonchrtblEOInd>
        <TrnsfrOtherAssetNonchrtblEOInd>false</TrnsfrOtherAssetNonchrtblEOInd>
        <SalesOrExchangesOfAssetsInd>false</SalesOrExchangesOfAssetsInd>
        <PurchaseOfAssetsNonchrtblEOInd>false</PurchaseOfAssetsNonchrtblEOInd>
        <RentalOfFacilitiesOthAssetsInd>false</RentalOfFacilitiesOthAssetsInd>
        <ReimbursementArrangementsInd>false</ReimbursementArrangementsInd>
        <LoansOrLoanGuaranteesInd>false</LoansOrLoanGuaranteesInd>
        <PerformanceOfServicesEtcInd>false</PerformanceOfServicesEtcInd>
        <SharingOfFacilitiesEtcInd>false</SharingOfFacilitiesEtcInd>
        <RelationshipsNonchrtblEOInd>false</RelationshipsNonchrtblEOInd>
      </TrnsfrTransRlnNonchrtblEOGrp>
    </IRS990PF>
    <IRS990ScheduleB documentId="IRS990ScheduleB" softwareId="24020490" softwareVersionNum="2024v5.2">
      <Organization501c3ExemptPFInd>X</Organization501c3ExemptPFInd>
      <GeneralRuleInd>X</GeneralRuleInd>
      <ContributorInformationGrp>
        <ContributorNum>1</ContributorNum>
        <ContributorPersonNm>LENARD THYLAN</ContributorPersonNm>
        <ContributorUSAddress>
          <AddressLine1Txt>710 PARK AVENUE APT 6C</AddressLine1Txt>
          <CityNm>NEW YORK</CityNm>
          <StateAbbreviationCd>NY</StateAbbreviationCd>
          <ZIPCd>10021</ZIPCd>
        </ContributorUSAddress>
        <TotalContributionsAmt>549526</TotalContributionsAmt>
        <PersonContributionInd>X</PersonContributionInd>
        <NoncashContributionInd>X</NoncashContributionInd>
      </ContributorInformationGrp>
      <NonCashPropertyContributionGrp>
        <ContributorNum>1</ContributorNum>
        <NoncashPropertyDesc>6,000 SHARES OF PARK HOTELS RSRTS5,000 SHARES OF SABRA HEALTH CARE REIT INC4,000 SHARES OF DIREXION</NoncashPropertyDesc>
        <FairMarketValueAmt>546030</FairMarketValueAmt>
        <ReceivedDt>2024-12-23</ReceivedDt>
      </NonCashPropertyContributionGrp>
    </IRS990ScheduleB>
    <InvestmentsOtherSchedule2 documentId="InvestmentsOtherSchedule2" softwareId="24020490" softwareVersionNum="2024v5.2">
      <InvestmentsOtherGrp>
        <CategoryOrItemTxt>6,000 SHARES - PARK HOTEL RSRTS</CategoryOrItemTxt>
        <ListedAtCostOrFMVCd>FMV</ListedAtCostOrFMVCd>
        <BookValueAmt>89400</BookValueAmt>
        <EOYFMVAmt>84420</EOYFMVAmt>
      </InvestmentsOtherGrp>
      <InvestmentsOtherGrp>
        <CategoryOrItemTxt>5,000 SHARES - SABRA HEALTH CARE REIT IN</CategoryOrItemTxt>
        <ListedAtCostOrFMVCd>FMV</ListedAtCostOrFMVCd>
        <BookValueAmt>84550</BookValueAmt>
        <EOYFMVAmt>86600</EOYFMVAmt>
      </InvestmentsOtherGrp>
      <InvestmentsOtherGrp>
        <CategoryOrItemTxt>4,000 SHARES DIREXION TECHNOLOGY BULL 3X</CategoryOrItemTxt>
        <ListedAtCostOrFMVCd>FMV</ListedAtCostOrFMVCd>
        <BookValueAmt>372080</BookValueAmt>
        <EOYFMVAmt>362200</EOYFMVAmt>
      </InvestmentsOtherGrp>
    </InvestmentsOtherSchedule2>
    <LegalFeesSchedule documentId="LegalFeesSchedule" softwareId="24020490" softwareVersionNum="2024v5.2">
      <LegalFeesGrp>
        <CategoryTxt>LEGAL FEES</CategoryTxt>
        <LegalFeesAmt>2896</LegalFeesAmt>
        <NetInvestmentIncomeAmt>0</NetInvestmentIncomeAmt>
        <AdjustedNetIncomeAmt>0</AdjustedNetIncomeAmt>
        <DisbursementsCharitablePrpsAmt>0</DisbursementsCharitablePrpsAmt>
      </LegalFeesGrp>
    </LegalFeesSchedule>
    <OtherExpensesSchedule documentId="OtherExpensesSchedule" softwareId="24020490" softwareVersionNum="2024v5.2">
      <OtherExpensesScheduleGrp>
        <Desc>FILING FEE</Desc>
        <RevenueAndExpensesPerBooksAmt>600</RevenueAndExpensesPerBooksAmt>
      </OtherExpensesScheduleGrp>
    </OtherExpensesSchedule>
    <OtherIncomeSchedule2 documentId="OtherIncomeSchedule2" softwareId="24020490" softwareVersionNum="2024v5.2">
      <OtherIncomeDetail>
        <Desc>Other Investment Income</Desc>
        <RevenueAndExpensesPerBooksAmt>318</RevenueAndExpensesPerBooksAmt>
      </OtherIncomeDetail>
    </OtherIncomeSchedule2>
  </ReturnData>
</Return>