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        <FormAndLineReferenceDesc>FORM 990, SCHEDULE A, PART IV, SECTION D, LINE 3</FormAndLineReferenceDesc>
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      <Form990ScheduleAPartVIGrp>
        <FormAndLineReferenceDesc>FORM 990, SCHEDULE A, PART IV, SECTION E, LINE 3A</FormAndLineReferenceDesc>
        <ExplanationTxt>POWER TO APPOINT OR ELECT OFFICERS, DIRECTORS, OR TRUSTEES MATHER FOUNDATION IS THE PARENT AND SOLE MEMBER OF MATHER. MATHER IS THE PARENT AND SOLE MEMBER OF THE SUPPORTING ORGANIZATIONS INCLUDING THE MATHER EVANSTON, MATHER PLACE, MATHER INVESTMENTS, NFP, AND MATHER POSSIBILITIES. EACH PARENT ELECTS AND REMOVES THE DIRECTORS OF ITS CONTROLLED ENTITIES.</ExplanationTxt>
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      <Form990ScheduleAPartVIGrp>
        <FormAndLineReferenceDesc>FORM 990, SCHEDULE A, PART IV, SECTION E, LINE 3B</FormAndLineReferenceDesc>
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      <SupplementalInformationDetail>
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        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>MISSION DRIVEN PROGRAMS</PurposeOfGrantTxt>
      </RecipientTable>
      <Total501c3OrgCnt>1</Total501c3OrgCnt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>PROCEDURE FOR MONITORING USE OF GRANT FUNDS INSIDE U.S. SUPERVISION THROUGH PARENT ORGANIZATION'S ROLE.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleI>
    <IRS990ScheduleJ documentId="RetDoc1042400001">
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      <SupplementalNonqualRtrPlanInd>1</SupplementalNonqualRtrPlanInd>
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      <CompBasedOnRevenueOfFlngOrgInd>0</CompBasedOnRevenueOfFlngOrgInd>
      <CompBsdOnRevRelatedOrgsInd>0</CompBsdOnRevRelatedOrgsInd>
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      <CompBsdNetEarnsRltdOrgsInd>0</CompBsdNetEarnsRltdOrgsInd>
      <AnyNonFixedPaymentsInd>0</AnyNonFixedPaymentsInd>
      <InitialContractExceptionInd>0</InitialContractExceptionInd>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>MARY G LEARY</PersonNm>
        <TitleTxt>PRESIDENT &amp; CEO</TitleTxt>
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        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
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        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
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        <NontaxableBenefitsFilingOrgAmt>0</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>36696</NontaxableBenefitsRltdOrgsAmt>
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        <TotalCompensationRltdOrgsAmt>2531605</TotalCompensationRltdOrgsAmt>
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        <PersonNm>CAROL L SUSSENBACH</PersonNm>
        <TitleTxt>CFO - THRU 04/2023</TitleTxt>
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        <TotalCompensationFilingOrgAmt>0</TotalCompensationFilingOrgAmt>
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        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>519611</CompReportPrior990RltdOrgsAmt>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>CHRISTOPHER MANELLA</PersonNm>
        <TitleTxt>SVP FINANCE &amp; TREASURER</TitleTxt>
        <BaseCompensationFilingOrgAmt>0</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>252781</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>166174</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>7628</OtherCompensationRltdOrgsAmt>
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        <NontaxableBenefitsFilingOrgAmt>0</NontaxableBenefitsFilingOrgAmt>
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        <TotalCompensationFilingOrgAmt>0</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>485066</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>67545</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>JULIE RIGGS</PersonNm>
        <TitleTxt>SECRETARY</TitleTxt>
        <BaseCompensationFilingOrgAmt>0</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>166179</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>43233</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>7553</OtherCompensationRltdOrgsAmt>
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        <TotalCompensationFilingOrgAmt>0</TotalCompensationFilingOrgAmt>
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        <FormAndLineReferenceDesc>PART I, LINE 3:</FormAndLineReferenceDesc>
        <ExplanationTxt>MATHER FOUNDATION'S TOP MANAGEMENT'S COMPENSATION IS ESTABLISHED BY MATHER, AS THE COMPENSATION IS PAID BY MATHER (A RELATED ORGANIZATION). MATHER FOLLOWS PROCEDURES TO ESTABLISH THE "REBUTTABLE" PRESUMPTION OF REASONABLENESS DESCRIBED IN THE INCOME TAX REGULATIONS IN DETERMINING EXECUTIVE COMPENSATION. COMPENSATION IS REVIEWED ANNUALLY BY THE BOARD'S COMPENSATION COMMITTEE, WHICH CONSISTS OF INDEPENDENT DIRECTORS WHO OBTAIN AND RELY ON APPROPRIATE DATA AS TO COMPARABILITY. OBJECTIVE EVIDENCE OF REASONABLENESS AND COMPARABILITY IS OBTAINED FROM INFORMATION PROVIDED BY AN INDEPENDENT, THIRD PARTY COMPENSATION CONSULTANT. DETERMINATION OF EXECUTIVE COMPENSATION INVOLVES BENCHMARKING WITH COMPARATIVE MARKET COMPENSATION DATA TO ENSURE THAT COMPENSATION IS FAIR, EQUITABLE, AND WITHIN THE STANDARDS OF COMPENSATION UTILIZED WITHIN THE INDUSTRY. COMPENSATION DECISIONS ARE DOCUMENTED AND REVIEWED WITH THE FULL BOARD.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 4B:</FormAndLineReferenceDesc>
        <ExplanationTxt>SUPPLEMENTAL NONQUALIFIED RETIREMENT PLAN MARY G. LEARY AND CAROL SUSSENBACH ARE PARTICIPANTS IN MATHER'S 457(F) PLANS. AS OF 2021, THE PLAN IS FROZEN AND NO LONGER ACCEPTING CONTRIBUTIONS. CAROL SUSSENBACH RECEIVED COMPENSATION FROM THE PLAN IN 2023.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleJ>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>FORM 990 REVIEW PROCESS THE FORM 990, AND RELATED SCHEDULES, WERE PREPARED BY GRANT THORNTON ADVISORS LLC USING INFORMATION PROVIDED BY MANAGEMENT. THE FORM 990, INCLUDING SCHEDULES, WAS DISTRIBUTED TO THE MEMBERS OF THE MATHER FOUNDATION AUDIT COMMITTEE OF THE BOARD OF DIRECTORS. THE COMMITTEE MET WITH MANAGEMENT AND REVIEWED THE FORM 990. SUBSEQUENTLY, THE FORM 990 WAS DISTRIBUTED TO EACH DIRECTOR OF MATHER FOUNDATION. ALL COMMENTS AND QUESTIONS WERE DIRECTED TO THE ORGANIZATION'S CHIEF FINANCIAL OFFICER.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>CONFLICT OF INTEREST POLICY MONITORING &amp; ENFORCEMENT ANNUALLY ALL BOARD MEMBERS, OFFICERS AND SENIOR STAFF MUST DISCLOSE ANY INTERESTS THAT COULD GIVE RISE TO CONFLICTS. ANY ACTUAL, POTENTIAL, OR APPARENT CONFLICTS ARE REFERRED TO THE CEO AND PRESIDENT, THE BOARD CHAIR, AND CHAIR OF THE GOVERNANCE COMMITTEE, WHO TAKE APPROPRIATE ACTION, INCLUDING DISCUSSING WITH THE FULL BOARD, WHEN NECESSARY.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 15</FormAndLineReferenceDesc>
        <ExplanationTxt>PROCESS FOR DETERMINING COMPENSATION ALL COMPENSATION FOR OFFICERS/DIRECTORS/KEY EMPLOYEES IS PAID BY A RELATED ORGANIZATION, MATHER. MATHER FOUNDATION RELIED ON MATHER TO REVIEW THIS INFORMATION FOR ALL COMPENSATION PAID.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>HOW DOCUMENTS ARE MADE AVAILABLE TO THE PUBLIC THE ORGANIZATION'S ARTICLES OF INCORPORATION, BYLAWS, CONFLICT OF INTEREST POLICY, AND AUDITED FINANCIAL STATEMENTS ARE AVAILABLE UPON REQUEST.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
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          <AddressLine1Txt>1560 SHERMAN AVENUE SUITE 1010</AddressLine1Txt>
          <CityNm>EVANSTON</CityNm>
          <StateAbbreviationCd>IL</StateAbbreviationCd>
          <ZIPCd>60201</ZIPCd>
        </USAddress>
        <EIN>362233542</EIN>
        <PrimaryActivitiesTxt>OLDER ADULT</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>IL</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>LINE 12C, III-FI</PublicCharityStatusTxt>
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          <BusinessNameLine1Txt>MATHER FDN</BusinessNameLine1Txt>
        </DirectControllingEntityName>
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      <IdRelatedTaxExemptOrgGrp>
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          <BusinessNameLine1Txt>MATHER PLACE</BusinessNameLine1Txt>
        </DisregardedEntityName>
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          <AddressLine1Txt>1560 SHERMAN AVENUE SUITE 1010</AddressLine1Txt>
          <CityNm>EVANSTON</CityNm>
          <StateAbbreviationCd>IL</StateAbbreviationCd>
          <ZIPCd>60201</ZIPCd>
        </USAddress>
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        <LegalDomicileStateCd>IL</LegalDomicileStateCd>
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        <PublicCharityStatusTxt>LINE 10</PublicCharityStatusTxt>
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          <BusinessNameLine1Txt>MATHER</BusinessNameLine1Txt>
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      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>MATHER INVESTMENTS NFP</BusinessNameLine1Txt>
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        <USAddress>
          <AddressLine1Txt>1560 SHERMAN AVENUE SUITE 1010</AddressLine1Txt>
          <CityNm>EVANSTON</CityNm>
          <StateAbbreviationCd>IL</StateAbbreviationCd>
          <ZIPCd>60201</ZIPCd>
        </USAddress>
        <EIN>364266878</EIN>
        <PrimaryActivitiesTxt>SENIOR LIVING</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>IL</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
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          <BusinessNameLine1Txt>MATHER</BusinessNameLine1Txt>
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          <StateAbbreviationCd>IL</StateAbbreviationCd>
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          <ZIPCd>60201</ZIPCd>
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        <EIN>205860808</EIN>
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        <LegalDomicileStateCd>IL</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>LINE 10</PublicCharityStatusTxt>
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          <BusinessNameLine1Txt>MATHER</BusinessNameLine1Txt>
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      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>ALONZO MATHER FOUNDATION</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>727 NORTH BANK LANE</AddressLine1Txt>
          <CityNm>LAKE FOREST</CityNm>
          <StateAbbreviationCd>IL</StateAbbreviationCd>
          <ZIPCd>60045</ZIPCd>
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        <EIN>366015440</EIN>
        <PrimaryActivitiesTxt>GRANTS</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>IL</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
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        <ControlledOrganizationInd>0</ControlledOrganizationInd>
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      <IdRelatedTaxExemptOrgGrp>
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          <BusinessNameLine1Txt>ALONZO CLARK MATHER TRUST</BusinessNameLine1Txt>
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      <GiftGrntCapContriFromOthOrgInd>1</GiftGrntCapContriFromOthOrgInd>
      <LoansOrGuaranteesToOtherOrgInd>1</LoansOrGuaranteesToOtherOrgInd>
      <LoansOrGuaranteesFromOthOrgInd>1</LoansOrGuaranteesFromOthOrgInd>
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      <ReimbursementPaidToOtherOrgInd>1</ReimbursementPaidToOtherOrgInd>
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      <TransactionsRelatedOrgGrp>
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          <BusinessNameLine1Txt>MATHER INVESTMENTS</BusinessNameLine1Txt>
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      <TransactionsRelatedOrgGrp>
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      <TransactionsRelatedOrgGrp>
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      <TransactionsRelatedOrgGrp>
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        <InvolvedAmt>4004805</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>COST</MethodOfAmountDeterminationTxt>
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    </IRS990ScheduleR>
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</Return>