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        <ExplanationTxt>THE BOK FOUNDATION HAS TEN DIRECTORS. SIX OF THE DIRECTORS ARE ALSO DIRECTORS OF CURTIS. FOUR OF THE SIX ARE TRUSTEE EMERITUS AND HAVE NO VOTING RIGHTS OR MANAGEMENT INFLUENCE ON CURTIS' BOARD. IN ADDITION, TWO OF THE SIX BOK FOUNDATION BOARD MEMBERS ARE ACTIVE MEMBERS OF IMPORTANT CURTIS COMMITTEES (FINANCE, INVESTMENT, HUMAN RESOURCES, AND GOVERNANCE) THAT MAKE OPERATIONAL DECISIONS FOR CURTIS. THERE IS A CLOSE WORKING RELATIONSHIP BETWEEN THE OFFICERS AND DIRECTORS OF BOTH ORGANIZATIONS AND BECAUSE OF THIS CLOSE WORKING RELATIONSHIP WITH THE OFFICERS AND DIRECTORS OF CURTIS, AND BY REASON OF THIS RELATIONSHIP THE OFFICERS AND DIRECTORS OF CURTIS HAVE A SIGNIFICANT, BUT NOT MARJORITY, VOICE IN BOKS' INVESTMENT POLICIES, THE TIMING OF GRANTS, THE MANNER OF MAKING THE SELECTION OF GRANT RECIPIENTS, AND IN OTHERWISE DIRECTING THE USE OF THE BOK FOUNDATION'S INCOME OR ASSETS.</ExplanationTxt>
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        <ExplanationTxt>THE FOUNDATION IS EXEMPT FROM FEDERAL INCOME TAXES UNDER SECTION 501(C)(3) OF THE INTERNAL REVENUE CODE. TAX FILINGS ARE SUBJECT TO AUDIT BY VARIOUS TAXING AUTHORITIES. OPEN PERIODS SUBJECT TO AUDIT ARE GENERALLY THE PREVIOUS THREE YEARS OF TAX RETURNS FILED.</ExplanationTxt>
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      <AccountActivitiesOutsideUSGrp>
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      <SupplementalInformationDetail>
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      <SupplementalInformationDetail>
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        <ExplanationTxt>THE ORGANIZATION MONITORS AND ENFORCES COMPLIANCE BY FOLLOWING THESE PROCEDURES: (1) ALL INTERESTED PERSONS HAS A DUTY TO FILE A CONFLICT OF INTEREST STATEMENT AND DISCLOSURE WHEN COMMENCING SERVICE AND ON AN ANNUAL BASIS THEREAFTER, OR MORE FREQUENTLY IF A CHANGE IN ANY NEW ACTIVITIES OR RELATIONSHIPS OCCURS. (2) SHOULD A CONFLICT OR POTENTIAL CONFLICT ARISE, THE INTERESTED PERSON PRESENTS THIS POTENTIAL CONFLICT OF INTEREST TO THE CHAIR OF THE BOARD OF TRUSTEES AND SHALL ABSTAIN FROM DISCUSSIONS RELATED TO TRANSACTIONS OR ARRANGEMENTS THAT INVOLVE, OR MAY INVOLVE, THE ACTUAL OR POTENTIAL CONFLICT UNTIL A DETERMINATION CAN BE MADE BY THE BOARD CHAIR, OR IF NEEDED THE APPROPRIATE COMMITTEE AS DETERMINED BY THE CHAIR OR BY THE BOARD, REGARDING WHETHER HE OR SHE HAS A CONFLICT OF INTEREST. (3) THE GOVERNANCE COMMITTEE DETERMINES WHETHER THERE IS A CONFLICT OF INTEREST, AND REPORTS TO THE BOARD OF TRUSTEES IF ONE EXISTS. (4) THE MINUTES OF THE BOARD (OR OTHER CORPORATE RECORDS, AS APPROPRIATE) SHALL RECORD THE NAMES OF THE PERSONS WHO WERE FOUND TO HAVE AN ACTUAL OR POTENTIAL CONFLICT OF INTEREST, THE NATURE OF THE CONFLICT, THE NATURE OF THE FOLLOW-UP, AND THE DECISION AS TO WHETHER A CONFLICT OF INTEREST IN FACT EXISTED, AND WHETHER THAT CONFLICT INVOLVES A PERMISSIBLE OR IMPERMISSIBLE TRANSACTION OR ARRANGEMENT.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>GOVERNING DOCUMENTS, CONFLICT OF INTEREST POLICY AND FINANCIAL STATEMENTS OF THE FOUNDATION ARE MADE AVAILABLE TO THE PUBLIC UPON REQUEST.</ExplanationTxt>
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          <AddressLine1Txt>1726 LOCUST STREET</AddressLine1Txt>
          <CityNm>PHILADELPHIA</CityNm>
          <StateAbbreviationCd>PA</StateAbbreviationCd>
          <ZIPCd>19103</ZIPCd>
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        <LegalDomicileStateCd>PA</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>LINE 2</PublicCharityStatusTxt>
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      <LoansOrGuaranteesFromOthOrgInd>0</LoansOrGuaranteesFromOthOrgInd>
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      <AssetExchangeInd>0</AssetExchangeInd>
      <RentalOfFacilitiesToOthOrgInd>0</RentalOfFacilitiesToOthOrgInd>
      <RentalOfFcltsFromOthOrgInd>0</RentalOfFcltsFromOthOrgInd>
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      <ReimbursementPaidToOtherOrgInd>1</ReimbursementPaidToOtherOrgInd>
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</Return>