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    <TaxPeriodEndDt>2026-05-31</TaxPeriodEndDt>
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      <PreparerFirmEIN>995013320</PreparerFirmEIN>
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        <BusinessNameLine1Txt>Chicago Bookkeeping Solutions LLC</BusinessNameLine1Txt>
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        <AddressLine1Txt>4435 N Tripp Ave</AddressLine1Txt>
        <CityNm>Chicago</CityNm>
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        <BusinessNameLine1Txt>Mark-9</BusinessNameLine1Txt>
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      <BusinessNameControlTxt>MARK</BusinessNameControlTxt>
      <PhoneNum>6303012320</PhoneNum>
      <USAddress>
        <AddressLine1Txt>560 Ogden Ave</AddressLine1Txt>
        <CityNm>Lisle</CityNm>
        <StateAbbreviationCd>IL</StateAbbreviationCd>
        <ZIPCd>60532</ZIPCd>
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      <PersonNm>Alexis Newman</PersonNm>
      <PersonTitleTxt>President</PersonTitleTxt>
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      <PreparerPersonNm>Jeffrey Ryan</PreparerPersonNm>
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      <PhoneNum>7732090396</PhoneNum>
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    <TaxYr>2025</TaxYr>
    <BuildTS>2025-03-06 01:10:19Z</BuildTS>
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      <PrimaryExemptPurposeTxt>MARK-9 is a non-profit organization dedicated to providing financial assistance for the veterinary medical care of retired working K-9s, supporting the handlers who care for them after their service ends.</PrimaryExemptPurposeTxt>
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        <PersonNm>Alexis Newman</PersonNm>
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        <PersonNm>Jim King</PersonNm>
        <TitleTxt>Treasurer</TitleTxt>
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      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>Ryley Martin</PersonNm>
        <TitleTxt>Vice President</TitleTxt>
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          <CityNm>Chicago</CityNm>
          <StateAbbreviationCd>IL</StateAbbreviationCd>
          <ZIPCd>60630</ZIPCd>
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        <PersonNm>Alexis Newman</PersonNm>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule L, Part V Supplemental Information</FormAndLineReferenceDesc>
        <ExplanationTxt>Schedule L, Part II, Line 1, Column (c): A board member inadvertently used the organizations funds for a personal purchase. The amount was recorded as a receivable and remained outstanding at year-end. The board member subsequently repaid the amount in full the following reporting period.</ExplanationTxt>
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        <FormAndLineReferenceDesc>Other Expenses.1001</FormAndLineReferenceDesc>
        <ExplanationTxt>Advertising and Promotion $630</ExplanationTxt>
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        <FormAndLineReferenceDesc>Other Expenses.1002</FormAndLineReferenceDesc>
        <ExplanationTxt>Office Expenses $1497</ExplanationTxt>
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        <ExplanationTxt>Information Technology $80</ExplanationTxt>
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        <FormAndLineReferenceDesc>Other Expenses.1012</FormAndLineReferenceDesc>
        <ExplanationTxt>Insurance $888</ExplanationTxt>
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        <FormAndLineReferenceDesc>Other Expenses.1</FormAndLineReferenceDesc>
        <ExplanationTxt>K9 Medical Reimbursement $40678</ExplanationTxt>
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        <FormAndLineReferenceDesc>Other Expenses.3</FormAndLineReferenceDesc>
        <ExplanationTxt>Filing Fees $28</ExplanationTxt>
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        <FormAndLineReferenceDesc>Other Assets.1007</FormAndLineReferenceDesc>
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