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      <Form990PartVIISectionAGrp>
        <PersonNm>BRIAN BRODERICK</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>MICHAEL BROWN</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>GARY CAMPBELL</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>FREDERICK CLIFFORD</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>DREW DAVIS</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>ANDREW DAVIS</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>BRACKETT DENNISTON</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>CHRIS DIBONAVENTURA</PersonNm>
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        <PersonNm>CHARLES HEWITT III</PersonNm>
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        <PersonNm>ED GLAESER</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>ELLEN ROY HERZFELDER</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>SARA JOHNSON</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>C BRUCE JOHNSTONE</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>MICHAEL KENNEALY</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>MARY MYERS KAUPPILA</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>M HOLT MASSEY</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>MARK RICKABAUGH</PersonNm>
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      <Form990PartVIISectionAGrp>
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      <Form990PartVIISectionAGrp>
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      <Form990PartVIISectionAGrp>
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        <ProgramServicesAmt>947203</ProgramServicesAmt>
        <ManagementAndGeneralAmt>145043</ManagementAndGeneralAmt>
        <FundraisingAmt>50995</FundraisingAmt>
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        <ManagementAndGeneralAmt>10603</ManagementAndGeneralAmt>
        <FundraisingAmt>297714</FundraisingAmt>
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        <ProgramServicesAmt>49946</ProgramServicesAmt>
        <ManagementAndGeneralAmt>4429</ManagementAndGeneralAmt>
        <FundraisingAmt>10703</FundraisingAmt>
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        <ProgramServicesAmt>129712</ProgramServicesAmt>
        <ManagementAndGeneralAmt>14565</ManagementAndGeneralAmt>
        <FundraisingAmt>35198</FundraisingAmt>
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        <TotalAmt>135969</TotalAmt>
        <ProgramServicesAmt>105647</ProgramServicesAmt>
        <ManagementAndGeneralAmt>8875</ManagementAndGeneralAmt>
        <FundraisingAmt>21447</FundraisingAmt>
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        <ManagementAndGeneralAmt>22500</ManagementAndGeneralAmt>
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        <ProgramServicesAmt>208131</ProgramServicesAmt>
        <ManagementAndGeneralAmt>1934</ManagementAndGeneralAmt>
        <FundraisingAmt>6797</FundraisingAmt>
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        <ProgramServicesAmt>121328</ProgramServicesAmt>
        <ManagementAndGeneralAmt>30231</ManagementAndGeneralAmt>
        <FundraisingAmt>38653</FundraisingAmt>
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        <ProgramServicesAmt>3229</ProgramServicesAmt>
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        <ManagementAndGeneralAmt>2490</ManagementAndGeneralAmt>
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        <ProgramServicesAmt>18401</ProgramServicesAmt>
        <ManagementAndGeneralAmt>2066</ManagementAndGeneralAmt>
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        <FundraisingAmt>170799</FundraisingAmt>
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        <ProgramServicesAmt>73691</ProgramServicesAmt>
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        <ManagementAndGeneralAmt>30294</ManagementAndGeneralAmt>
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        <ProgramServicesAmt>3039836</ProgramServicesAmt>
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        <EOYAmt>772417</EOYAmt>
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        <EOYAmt>1008050</EOYAmt>
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        <EOYAmt>191750</EOYAmt>
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        <EOYAmt>0</EOYAmt>
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        <EOYAmt>0</EOYAmt>
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        <EOYAmt>0</EOYAmt>
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        <EOYAmt>0</EOYAmt>
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        <EOYAmt>744354</EOYAmt>
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        <EOYAmt>4685940</EOYAmt>
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        <EOYAmt>0</EOYAmt>
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        <EOYAmt>0</EOYAmt>
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        <EOYAmt>0</EOYAmt>
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        <EOYAmt>7478638</EOYAmt>
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        <EOYAmt>207863</EOYAmt>
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        <EOYAmt>0</EOYAmt>
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        <EOYAmt>0</EOYAmt>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>MARY Z CONAUGHTON</PersonNm>
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        <PersonNm>FRANK BAILEY</PersonNm>
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        <ExplanationTxt>THE EXECUTIVE DIRECTOR'S ANNUAL COMPENSATION IS SUBJECT TO THE RECOMMENDATION OF THE STRATEGIC IMPLEMENTATION COMMITTEE ESTABLISHED BY THE BOARD, WHICH IS SUBJECT TO THE FINAL APPROVAL OF THE ENTIRE BOARD. THE COMMITTEE CONDUCTS AN ANNUAL PERFORMANCE EVALUATION RELATIVE TO CERTAIN GOALS AND KEY PERFORMANCE METRICS WHILE ALSO CONDUCTING A MARKET STUDY OF COMPENSATION DATA FOR COMPARABLE ORGANIZATIONS. BASED UPON THE ABOVE CRITERIA: THE EXECUTIVE DIRECTOR RECEIVED A BONUS OF $12,000 FOR THE TAX YEAR 12/31/22.</ExplanationTxt>
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        <FormAndLineReferenceDesc>FORM AND LINE REFERENCE: PART - I LINE 3</FormAndLineReferenceDesc>
        <ExplanationTxt>THE EXECUTIVE DIRECTOR'S ANNUAL COMPENSATION IS SUBJECT TO THE RECOMMENDATION OF THE STRATEGIC IMPLEMENTATION COMMITTEE ESTABLISHED BY THE BOARD, WHICH IS SUBJECT TO THE FINAL APPROVAL OF THE ENTIRE BOARD. THE COMMITTEE CONDUCTS AN ANNUAL PERFORMANCE EVALUATION RELATIVE TO CERTAIN GOALS AND KEY PERFORMANCE METRICS WHILE ALSO CONDUCTING A MARKET STUDY OF COMPENSATION DATA FOR COMPARABLE ORGANIZATIONS. DOCUMENTATION OF THE PROCESS AND THE RESULTS ARE RECORDED IN THE MINUTES OF THE COMMITTEE AND BOARD MEETINGS.</ExplanationTxt>
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      <SecuritiesPubliclyTradedGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <ContributionCnt>4</ContributionCnt>
        <NoncashContributionsRptF990Amt>218862</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>FAIR MARKET VALUE</MethodOfDeterminingRevenuesTxt>
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      <OtherNonCashContriTableGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <Desc>SOCIAL MEDIA ADVERTISING CREDITS</Desc>
        <ContributionCnt>1</ContributionCnt>
        <NoncashContributionsRptF990Amt>88121</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>FAIR MARKET VALUE</MethodOfDeterminingRevenuesTxt>
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      <OtherNonCashContriTableGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <Desc>PUBLIC RELATIONS</Desc>
        <ContributionCnt>4</ContributionCnt>
        <NoncashContributionsRptF990Amt>30000</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>FAIR MARKET VALUE</MethodOfDeterminingRevenuesTxt>
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      <OtherNonCashContriTableGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <Desc>FUND RAISING EVENT</Desc>
        <ContributionCnt>1</ContributionCnt>
        <NoncashContributionsRptF990Amt>21641</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>FAIR MARKET VALUE</MethodOfDeterminingRevenuesTxt>
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      <AnyPropertyThatMustBeHeldInd>0</AnyPropertyThatMustBeHeldInd>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 1, LINE B</FormAndLineReferenceDesc>
        <ExplanationTxt>AMENDED RETURN DESCRIPTION: THIS RETURN HAS BEEN AMENDED TO UPDATE FOR THE CORRECT TAX FILING YEAR. ORGANIZATION'S FISCAL YEAR IS FROM 10/1/22 TO 9/30/23 WAS ORIGINALLY INPUTTED IN TAX YEAR 2023. THE CORRECT TAX YEAR SHOULD BE 2022.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART AND LINE NUMBER: PART III - GENERAL</FormAndLineReferenceDesc>
        <ExplanationTxt>PIONEER'S SUBORDINATES INCLUDE PIONEER LEGAL LLC, A MASSACHUSETTS SINGLE MEMBER LIMITED LIABILITY COMPANY WITH AN ADDRESS OF 185 DEVONSHIRE STREET, SUITE 1101, BOSTON, MA 02110.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE PROCEDURES THAT PIONEER FOLLOWS IN THE REVIEW OF ITS FORM 990 INCLUDES THE FOLLOWING: 1) FORM 990 IS COMPLETED BY PIONEER'S AUDITORS WITH ASSISTANCE FROM MANAGEMENT, 2) THE RETURN IS REVIEWED BY MANAGEMENT AND ANY REVISIONS COMPLETED, 3) THE FORM IS SCRUTINZED BY PIONEER'S AUDIT COMMITTEE AND ANY QUESTIONS ADDRESSED BY MANAGEMENT AND/OR THE AUDITOR, 4) THE FINAL VERSION OF THE FORM 990 IS DISTRIBUTED TO MANAGEMENT, THE AUDIT COMMITTEE AND BOARD OF DIRECTORS PRIOR TO FILING WITH THE AUTHORITIES.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>PIONEER'S CONFLICT OF INTEREST POLICY IS CIRCULATED TO THE ORGANIZATION'S EMPLOYEES, MANAGEMENT AND THE BOARD OF DIRECTORS ANNUALLY, INCLUDING MANGAGEMENT AND THE BOARD OF DIRECTORS. RECIPIENTS ARE REQUIRED TO SIGN THE POLICY AND DISCLOSE AND POTENTIAL CONFLICTS. ADDITIONALLY, MANAGEMENT REGULARLY MONITORS VENDOR RELATIONSHIPS FOR ANY POTENTIAL CONFLICTS THROUGHOUT THE YEAR.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 15A</FormAndLineReferenceDesc>
        <ExplanationTxt>THE COMPENSATION OF PIONEER'S OFFICERS AND KEY EMPLOYEES IS DETERMINED IN ACCORDANCE WITH THE FOLLOWING PROCEDURES: 1) SELF-EVALUATION OF THE EMPLOYEE IS UNDERTAKEN AND SHARED WITH MANAGEMENT, 2) AN ANNUAL PERFORMANCE EVALUATION IS UNDERTAKEN BY THE EMPLOYEE'S SUPERVISOR, OR IN THE CASE OF THE EXECUTIVE DIRECTOR, BY THE BOARD AND THE STRATEGIC IMPLEMENTATION COMMITTEE, AT WHICH POINT THEIR PERFORMANCE IS EVALUATED RELATIVE TO CERTAIN GOALS OR KEY PERFORMANCE METRICS, 3) A REVIEW OF COMPARATIVE COMPENSATION FOR SIMLAR ORGANIZATIONS IN TERMS OF SIZE, REVENUE, NUMBER OF EMPLOYEES &amp; GEOGRAPHICAL MARKET IS UNDERTAKEN, AND 4) DOCUMENTATION OF THE PROCEDURES AND RESULTS ARE RECORDED IN THE EMPLOYEE'S PERSONNEL FILE. THE ANNUAL COMPENSATION FOR THE EXECUTIVE DIRECTOR IS SUBJECT TO THE RECOMMENDATION OF THE STREGIC IMPLEMENTATION COMMTTEE ESTABLISHED BY THE BOARD, WHICH IS SUBJECT TO THE APPROVAL OF THE ENTIRE BOARD.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>PIONEER MAKES THEIR AUDITED FINANCIAL STATEMENTS AND TAX RETURNS FOR THE LAST 10-YEARS ACCESSIBLE FROM ITS WEBSITE. ADDITIONALLY, THE FINANCIAL STATEMENTS AND TAX RETURNS ARE AVAILABLE UPON REQUEST, ALONG WITH THE ORGANIZATION'S BYLAWS AND CONFLICT OF INTEREST POLICY.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART XII, LINE 2C:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION DID NOT CHANGE EITHER ITS OVERSIGHT PROCESS OF THE AUDIT, REVIEW, OR COMPILATION OF ITS FINANCIAL STATEMENTS OR SELECTION PROCESS FOR AN INDEPENDENT ACCOUNTANT DURING THE TAX YEAR.</ExplanationTxt>
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          <BusinessNameLine1Txt>PIONEERLEGAL LLC</BusinessNameLine1Txt>
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        <USAddress>
          <AddressLine1Txt>185 DEVONSHIRE STREET SUITE 1101</AddressLine1Txt>
          <CityNm>BOSTON</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>02110</ZIPCd>
        </USAddress>
        <EIN>874300907</EIN>
        <PrimaryActivitiesTxt>PUBLIC INTEREST LAW</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <TotalIncomeAmt>0</TotalIncomeAmt>
        <EndOfYearAssetsAmt>259564</EndOfYearAssetsAmt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>PIONEER INSTITUTE</BusinessNameLine1Txt>
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