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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART X, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>DURING THE YEARS ENDED DECEMBER 31, 2021 AND 2020, MIE HAS DOCUMENTED ITS CONSIDERATION OF FASB ASC 740-10, INCOME TAXES, THAT PROVIDES GUIDANCE FOR REPORTING UNCERTAINTY IN INCOME TAXES AND HAS DETERMINED THAT NO MATERIAL UNCERTAIN TAX POSITIONS QUALIFY FOR EITHER RECOGNITION OR DISCLOSURE IN THE FINANCIAL STATEMENTS.</ExplanationTxt>
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        <PersonNm>MELANIE AUDETTE</PersonNm>
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        <FormAndLineReferenceDesc>PART I, LINE 7</FormAndLineReferenceDesc>
        <ExplanationTxt>DURING THE YEAR ENDED DECEMBER 31, 2021, EMPLOYEES LISTED ON FORM 990, PART VII RECEIVED BONUS PAYMENTS BASED ON THEIR PERFORMANCES.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART I, LINE 1</FormAndLineReferenceDesc>
        <ExplanationTxt>MIE IS THE LEADING IMPACT INVESTING NETWORK FOR FOUNDATIONS DEDICATED TO DEPLOYING CAPITAL FOR SOCIAL AND ENVIRONMENTAL CHANGE.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART III, LINE 1, DESCRIPTION OF ORGANIZATION MISSION</FormAndLineReferenceDesc>
        <ExplanationTxt>MIE IS A CHARITABLE AND EDUCATIONAL ORGANIZATION THAT PROVIDES EDUCATIONAL FORUMS, MATERIALS, TRAINING, AND SUPPORT TO FOUNDATIONS AND OTHER PHILANTHROPIC ORGANIZATIONS IN ORDER TO ENCOURAGE THEIR EFFECTIVE USE OF MISSION INVESTING, INCLUDING BOTH PROGRAM RELATED AND MISSION-RELATED INVESTMENTS, AS A SIGNIFICANT PART OF THEIR CHARITABLE ACTIVITIES.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE FEDERAL FORM 990 IS SENT VIA E-MAIL TO THE TREASURER AND THE BOARD CHAIR FOR REVIEW ON BEHALF OF THE GOVERNING BODY. THE REVIEWS ARE VERIFIED VIA E-MAIL PRIOR TO FILING THE FEDERAL FORM 990 WITH THE INTERNAL REVENUE SERVICE. UPON REVIEW, THE FEDERAL FORM 990 IS DISTRIBUTED TO THE FULL BOARD.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>ANNUALLY EACH BOARD MEMBER OF MIE COMPLETES A "DISCLOSURE STATEMENT" THAT REPORTS OBLIGATIONS AND DOCUMENTS DISCLOSURES THAT ARE NECESSARY TO COMPLY WITH THE ORGANIZATION'S CONFLICT OF INTEREST POLICY AND FORM 990 REQUIREMENTS. IF A CONFLICT OF INTEREST ARISES, THE BOARD MEMBER SHOULD DISCLOSE THE CONFLICT. BOARD MEMBERS WITH CONFLICTS OF INTEREST SHOULD ABSTAIN FROM VOTING ON ANY MATTERS WHERE THERE IS A CONFLICT OF INTEREST.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 15A</FormAndLineReferenceDesc>
        <ExplanationTxt>IN SETTING CEO'S COMPENSATION, THE BOARD OF DIRECTORS ENGAGES AN INDEPENDENT CONSULTANT / EXECUTIVE SEARCH FIRM WHO REVIEWS COMPARABLE SALARIES FROM OTHER NONPROFITS' FEDERAL FORM 990S AND SALARY SURVEY DATA. THE BOARD OF DIRECTORS' APPROVAL IS REQUIRED FOR THE CEO'S COMPENSATION.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>MIE MAKES ITS GOVERNING DOCUMENTS AND FINANCIAL STATEMENTS AVAILABLE UPON REQUEST.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART IX, LINE 11G</FormAndLineReferenceDesc>
        <ExplanationTxt>HR SERVICES: PROGRAM SERVICE EXPENSES 0. MANAGEMENT AND GENERAL EXPENSES 117,614. FUNDRAISING EXPENSES 0. TOTAL EXPENSES 117,614. RETIREMENT PLAN SUPPORT: PROGRAM SERVICE EXPENSES 0. MANAGEMENT AND GENERAL EXPENSES 2,093. FUNDRAISING EXPENSES 0. TOTAL EXPENSES 2,093. WEBSITE &amp; OTHER DESIGN: PROGRAM SERVICE EXPENSES 63,165. MANAGEMENT AND GENERAL EXPENSES 0. FUNDRAISING EXPENSES 0. TOTAL EXPENSES 63,165. COMMUNICATION: PROGRAM SERVICE EXPENSES 129,303. MANAGEMENT AND GENERAL EXPENSES 0. FUNDRAISING EXPENSES 0. TOTAL EXPENSES 129,303. STRATEGIC CONSULTING: PROGRAM SERVICE EXPENSES 0. MANAGEMENT AND GENERAL EXPENSES 7,669. FUNDRAISING EXPENSES 0. TOTAL EXPENSES 7,669. PROGRAMMATIC SUPPORT: PROGRAM SERVICE EXPENSES 153,684. MANAGEMENT AND GENERAL EXPENSES 0. FUNDRAISING EXPENSES 0. TOTAL EXPENSES 153,684. OTHER PROFESSIONAL FEES: PROGRAM SERVICE EXPENSES 37,691. MANAGEMENT AND GENERAL EXPENSES 0. FUNDRAISING EXPENSES 0. TOTAL EXPENSES 37,691.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>
