﻿<?xml version="1.0" encoding="utf-8"?>
<Return xmlns="http://www.irs.gov/efile" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" returnVersion="2017v2.3">
  <ReturnHeader binaryAttachmentCnt="0">
    <ReturnTs>2019-02-11T11:22:10-06:00</ReturnTs>
    <TaxPeriodEndDt>2018-06-30</TaxPeriodEndDt>
    <PreparerFirmGrp>
      <PreparerFirmEIN>900968587</PreparerFirmEIN>
      <PreparerFirmName>
        <BusinessNameLine1Txt>LT GAGNON PLC</BusinessNameLine1Txt>
      </PreparerFirmName>
      <PreparerUSAddress>
        <AddressLine1Txt>712 N TAMARISK ST</AddressLine1Txt>
        <CityNm>CHANDLER</CityNm>
        <StateAbbreviationCd>AZ</StateAbbreviationCd>
        <ZIPCd>852243413</ZIPCd>
      </PreparerUSAddress>
    </PreparerFirmGrp>
    <ReturnTypeCd>990EZ</ReturnTypeCd>
    <TaxPeriodBeginDt>2017-07-01</TaxPeriodBeginDt>
    <Filer>
      <EIN>522254656</EIN>
      <BusinessName>
        <BusinessNameLine1Txt>THE ROY G POST FOUNDATION</BusinessNameLine1Txt>
      </BusinessName>
      <BusinessNameControlTxt>ROYG</BusinessNameControlTxt>
      <PhoneNum>4804914004</PhoneNum>
      <USAddress>
        <AddressLine1Txt>PO BOX 27646</AddressLine1Txt>
        <CityNm>TEMPE</CityNm>
        <StateAbbreviationCd>AZ</StateAbbreviationCd>
        <ZIPCd>85285</ZIPCd>
      </USAddress>
    </Filer>
    <BusinessOfficerGrp>
      <PersonNm>JAN CARLIN</PersonNm>
      <PersonTitleTxt>MANAGING DIRECTOR</PersonTitleTxt>
      <PhoneNum>5202415398</PhoneNum>
      <SignatureDt>2019-02-05</SignatureDt>
      <DiscussWithPaidPreparerInd>true</DiscussWithPaidPreparerInd>
    </BusinessOfficerGrp>
    <PreparerPersonGrp>
      <PreparerPersonNm>LOUANNE T GAGNON</PreparerPersonNm>
      <PTIN>P00049103</PTIN>
      <PhoneNum>4809249245</PhoneNum>
      <PreparationDt>2019-02-11</PreparationDt>
    </PreparerPersonGrp>
    <FilingSecurityInformation>
      <IPAddress>
        <IPv4AddressTxt>184.188.105.83</IPv4AddressTxt>
      </IPAddress>
      <IPDt>2019-02-11</IPDt>
      <IPTm>09:41:35</IPTm>
      <FilingLicenseTypeCd>P</FilingLicenseTypeCd>
      <AtSubmissionCreationDeviceId>55768AC9CD56D4035E89663FEFE1880A83120F3A</AtSubmissionCreationDeviceId>
      <AtSubmissionFilingDeviceId>E410003EDDEBCEF75776BCF270AA5C2AD0055B18</AtSubmissionFilingDeviceId>
    </FilingSecurityInformation>
    <TaxYr>2017</TaxYr>
    <BuildTS>2019-02-21 02:37:17Z</BuildTS>
  </ReturnHeader>
  <ReturnData documentCnt="4">
    <IRS990EZ documentId="RetDoc2" referenceDocumentId="RetDoc3">
      <MethodOfAccountingCashInd>X</MethodOfAccountingCashInd>
      <WebsiteAddressTxt>WWW.ROYGPOST.ORG</WebsiteAddressTxt>
      <Organization501c3Ind referenceDocumentId="RetDoc4">X</Organization501c3Ind>
      <TypeOfOrganizationCorpInd>X</TypeOfOrganizationCorpInd>
      <GrossReceiptsAmt>77530</GrossReceiptsAmt>
      <InfoInScheduleOPartIInd>X</InfoInScheduleOPartIInd>
      <ContributionsGiftsGrantsEtcAmt>77530</ContributionsGiftsGrantsEtcAmt>
      <TotalRevenueAmt>77530</TotalRevenueAmt>
      <GrantsAndSimilarAmountsPaidAmt>57500</GrantsAndSimilarAmountsPaidAmt>
      <OtherExpensesTotalAmt>184</OtherExpensesTotalAmt>
      <TotalExpensesAmt>57684</TotalExpensesAmt>
      <ExcessOrDeficitForYearAmt>19846</ExcessOrDeficitForYearAmt>
      <NetAssetsOrFundBalancesBOYAmt>20748</NetAssetsOrFundBalancesBOYAmt>
      <NetAssetsOrFundBalancesEOYAmt>40594</NetAssetsOrFundBalancesEOYAmt>
      <CashSavingsAndInvestmentsGrp>
        <BOYAmt>20748</BOYAmt>
        <EOYAmt>40594</EOYAmt>
      </CashSavingsAndInvestmentsGrp>
      <Form990TotalAssetsGrp>
        <BOYAmt>20748</BOYAmt>
        <EOYAmt>40594</EOYAmt>
      </Form990TotalAssetsGrp>
      <NetAssetsOrFundBalancesGrp>
        <BOYAmt>20748</BOYAmt>
        <EOYAmt>40594</EOYAmt>
      </NetAssetsOrFundBalancesGrp>
      <InfoInScheduleOPartIIIInd>X</InfoInScheduleOPartIIIInd>
      <PrimaryExemptPurposeTxt>PROVIDE SCHOLARSHIPS TO UNIVERSITY STUDENTS TO DEVELOP CAREERS IN THE SAFE MANAGEMENT OF NUCLEAR MATERIALS AND TO PARTICIPATE IN THE ANNUAL WASTE MANAGEMENT SYMPOSIUM.</PrimaryExemptPurposeTxt>
      <ProgramSrvcAccomplishmentGrp>
        <DescriptionProgramSrvcAccomTxt>PROVIDED SCHOLARSHIPS TO 14 DIFFERENT STUDENTS TO CONTINUE THEIR EDUCATION IN ENGINEERING.</DescriptionProgramSrvcAccomTxt>
        <GrantsAndAllocationsAmt>57500</GrantsAndAllocationsAmt>
        <ProgramServiceExpensesAmt>57500</ProgramServiceExpensesAmt>
      </ProgramSrvcAccomplishmentGrp>
      <TotalProgramServiceExpensesAmt>57500</TotalProgramServiceExpensesAmt>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>ROBERT BERRY</PersonNm>
        <TitleTxt>PRESIDENT</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>000.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>JUDITH CONNELL</PersonNm>
        <TitleTxt>SECRETARY</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>000.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>JAMES FIORE</PersonNm>
        <TitleTxt>VICE PRESIDE</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>000.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>MARK FREI</PersonNm>
        <TitleTxt>TRUSTEE</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>000.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>MICHELLE CLAGGETT</PersonNm>
        <TitleTxt>TRUSTEE</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>000.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>MARTIN SCHNEIDER</PersonNm>
        <TitleTxt>TRUSTEE</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>000.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>JAN CARLIN</PersonNm>
        <TitleTxt>MANAGING DIR</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>000.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>PATRICIA RECKERS</PersonNm>
        <TitleTxt>CFO</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>000.00</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>
      <StatesWhereCopyOfReturnIsFldCd>AZ</StatesWhereCopyOfReturnIsFldCd>
      <BooksInCareOfDetail>
        <PersonNm>PATRICIA RECKERS</PersonNm>
        <USAddress>
          <AddressLine1Txt>PO BOX 27646</AddressLine1Txt>
          <CityNm>TEMPE</CityNm>
          <StateAbbreviationCd>AZ</StateAbbreviationCd>
          <ZIPCd>85285</ZIPCd>
        </USAddress>
        <PhoneNum>4804914004</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>
        <CurrentTaxYearMinus4YearsAmt>87820</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>78365</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>71895</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>73910</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>77530</CurrentTaxYearAmt>
        <TotalAmt>389520</TotalAmt>
      </GiftsGrantsContrisRcvd509Grp>
      <Total509Grp>
        <CurrentTaxYearMinus4YearsAmt>87820</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>78365</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>71895</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>73910</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>77530</CurrentTaxYearAmt>
        <TotalAmt>389520</TotalAmt>
      </Total509Grp>
      <PublicSupportTotal509Amt>389520</PublicSupportTotal509Amt>
      <TotalSupportCalendarYearGrp>
        <CurrentTaxYearMinus4YearsAmt>87820</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>78365</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>71895</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>73910</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>77530</CurrentTaxYearAmt>
        <TotalAmt>389520</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" />
    <IRS990ScheduleO documentId="RetDoc3">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990-EZ, PART I, LINE 10</FormAndLineReferenceDesc>
        <ExplanationTxt>CASH CONTRIBUTION: 57,500 RELATIONSHIP: NONE</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990-EZ, PART I, LINE 16</FormAndLineReferenceDesc>
        <ExplanationTxt>EXPENSES BANK CHARGES 184 TOTAL 184</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990-EZ, PART III</FormAndLineReferenceDesc>
        <ExplanationTxt>PROVIDE SCHOLARSHIPS TO UNIVERSITY STUDENTS TO DEVELOP CAREERS IN THE SAFE MANAGEMENT OF NUCLEAR MATERIALS AND TO PARTICIPATE IN THE ANNUAL WASTE MANAGEMENT SYMPOSIUM.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>