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The reporting person undertakes to provide to Credit Acceptance Corporation, any security holder of Credit Acceptance Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in the preceding sentence."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"These shares are owned of record by Todd Watson, spouse of Jill Foss Watson, as trustee of the Jill Foss Watson Irrevocable Trust."}],"balance_after":47912,"source":{"system":"sec-edgar","filing":"0001568982-26-000004","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/885550/000156898226000004/primary_doc.xml","form_type":"4"}},{"id":706016,"issuer":{"id":3780,"kind":"organization","name":"CREDIT ACCEPTANCE CORP"},"owners":[{"id":29592,"kind":"person","name":"Watson Jill Foss","position":1,"cik":"0001568982","reported_name":"Watson Jill Foss","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2026-07-20T21:02:50.000Z","date":"2026-07-16","kind":"sale","planned":false,"acquired":false,"shares":977,"price":640.1488,"value":625425.3776,"ownership":{"direct":false,"nature":"See footnote 2"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price. 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The reporting person undertakes to provide to Credit Acceptance Corporation, any security holder of Credit Acceptance Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in the preceding sentence."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"These shares are owned of record by Todd Watson, spouse of Jill Foss Watson, as trustee of the Jill Foss Watson Irrevocable Trust."}],"balance_after":48369,"source":{"system":"sec-edgar","filing":"0001568982-26-000004","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/885550/000156898226000004/primary_doc.xml","form_type":"4"}},{"id":713140,"issuer":{"id":3780,"kind":"organization","name":"CREDIT ACCEPTANCE CORP"},"owners":[{"id":31532,"kind":"person","name":"Schumann Steffen","position":1,"cik":"0002116778","reported_name":"Schumann Steffen","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Business Officer"}}],"security":"Common Stock","published_at":"2026-07-08T20:04:11.000Z","date":"2026-06-15","kind":"grant","planned":false,"acquired":true,"shares":3494,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":22726,"source":{"system":"sec-edgar","filing":"0000885550-26-000168","document":"wk-form4_1783541048.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/885550/000088555026000168/wk-form4_1783541048.xml","form_type":"4"}},{"id":714032,"issuer":{"id":3780,"kind":"organization","name":"CREDIT ACCEPTANCE CORP"},"owners":[{"id":29592,"kind":"person","name":"Watson Jill Foss","position":1,"cik":"0001568982","reported_name":"Watson Jill Foss","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2026-07-07T20:20:24.000Z","date":"2026-07-02","kind":"sale","planned":false,"acquired":false,"shares":102,"price":652.7,"value":66575.4,"ownership":{"direct":false,"nature":"See footnote 17"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F21","text":"The price reported in Column 4 is a weighted average price. 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The reporting person undertakes to provide to Credit Acceptance Corporation, any security holder of Credit Acceptance Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in the preceding sentence."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F17","text":"These shares are owned of record by Todd Watson, spouse of Jill Foss Watson, as trustee of the Jill Foss Watson Irrevocable Trust."}],"balance_after":49346,"source":{"system":"sec-edgar","filing":"0001193125-26-297504","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":20,"url":"https://www.sec.gov/Archives/edgar/data/885550/000119312526297504/ownership.xml","form_type":"4"}},{"id":714031,"issuer":{"id":3780,"kind":"organization","name":"CREDIT ACCEPTANCE CORP"},"owners":[{"id":29592,"kind":"person","name":"Watson Jill Foss","position":1,"cik":"0001568982","reported_name":"Watson Jill Foss","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2026-07-07T20:20:24.000Z","date":"2026-07-02","kind":"sale","planned":false,"acquired":false,"shares":562,"price":651.94,"value":366390.28,"ownership":{"direct":false,"nature":"See footnote 17"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F20","text":"The price reported in Column 4 is a weighted average price. 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The reporting person undertakes to provide to Credit Acceptance Corporation, any security holder of Credit Acceptance Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in the preceding sentence."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F17","text":"These shares are owned of record by Todd Watson, spouse of Jill Foss Watson, as trustee of the Jill Foss Watson Irrevocable Trust."}],"balance_after":49448,"source":{"system":"sec-edgar","filing":"0001193125-26-297504","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":19,"url":"https://www.sec.gov/Archives/edgar/data/885550/000119312526297504/ownership.xml","form_type":"4"}},{"id":714030,"issuer":{"id":3780,"kind":"organization","name":"CREDIT ACCEPTANCE CORP"},"owners":[{"id":29592,"kind":"person","name":"Watson Jill Foss","position":1,"cik":"0001568982","reported_name":"Watson Jill Foss","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2026-07-07T20:20:24.000Z","date":"2026-07-02","kind":"sale","planned":false,"acquired":false,"shares":1203,"price":650.66,"value":782743.98,"ownership":{"direct":false,"nature":"See footnote 17"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F19","text":"The price reported in Column 4 is a weighted average price. 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The reporting person undertakes to provide to Credit Acceptance Corporation, any security holder of Credit Acceptance Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in the preceding sentence."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F17","text":"These shares are owned of record by Todd Watson, spouse of Jill Foss Watson, as trustee of the Jill Foss Watson Irrevocable Trust."}],"balance_after":50010,"source":{"system":"sec-edgar","filing":"0001193125-26-297504","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":18,"url":"https://www.sec.gov/Archives/edgar/data/885550/000119312526297504/ownership.xml","form_type":"4"}},{"id":714029,"issuer":{"id":3780,"kind":"organization","name":"CREDIT ACCEPTANCE CORP"},"owners":[{"id":29592,"kind":"person","name":"Watson Jill Foss","position":1,"cik":"0001568982","reported_name":"Watson Jill Foss","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2026-07-07T20:20:24.000Z","date":"2026-07-02","kind":"sale","planned":false,"acquired":false,"shares":1503,"price":649.38,"value":976018.14,"ownership":{"direct":false,"nature":"See footnote 17"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F18","text":"The price reported in Column 4 is a weighted average price. 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The reporting person undertakes to provide to Credit Acceptance Corporation, any security holder of Credit Acceptance Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in the preceding sentence."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F17","text":"These shares are owned of record by Todd Watson, spouse of Jill Foss Watson, as trustee of the Jill Foss Watson Irrevocable Trust."}],"balance_after":51213,"source":{"system":"sec-edgar","filing":"0001193125-26-297504","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":17,"url":"https://www.sec.gov/Archives/edgar/data/885550/000119312526297504/ownership.xml","form_type":"4"}},{"id":714028,"issuer":{"id":3780,"kind":"organization","name":"CREDIT ACCEPTANCE CORP"},"owners":[{"id":29592,"kind":"person","name":"Watson Jill Foss","position":1,"cik":"0001568982","reported_name":"Watson Jill Foss","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2026-07-07T20:20:24.000Z","date":"2026-07-02","kind":"sale","planned":false,"acquired":false,"shares":1130,"price":648.32,"value":732601.6,"ownership":{"direct":false,"nature":"See footnote 17"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F16","text":"The price reported in Column 4 is a weighted average price. 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The reporting person undertakes to provide to Credit Acceptance Corporation, any security holder of Credit Acceptance Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in the preceding sentence."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F17","text":"These shares are owned of record by Todd Watson, spouse of Jill Foss Watson, as trustee of the Jill Foss Watson Irrevocable Trust."}],"balance_after":52716,"source":{"system":"sec-edgar","filing":"0001193125-26-297504","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":16,"url":"https://www.sec.gov/Archives/edgar/data/885550/000119312526297504/ownership.xml","form_type":"4"}},{"id":714027,"issuer":{"id":3780,"kind":"organization","name":"CREDIT ACCEPTANCE CORP"},"owners":[{"id":29592,"kind":"person","name":"Watson Jill Foss","position":1,"cik":"0001568982","reported_name":"Watson Jill Foss","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2026-07-07T20:20:24.000Z","date":"2026-07-02","kind":"sale","planned":false,"acquired":false,"shares":80,"price":666.22,"value":53297.6,"ownership":{"direct":false,"nature":"See footnote 2"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"These shares are owned of record by Jill Foss Watson, as Trustee of the Jill Foss Watson Living Trust."}],"balance_after":85607,"source":{"system":"sec-edgar","filing":"0001193125-26-297504","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":15,"url":"https://www.sec.gov/Archives/edgar/data/885550/000119312526297504/ownership.xml","form_type":"4"}},{"id":714026,"issuer":{"id":3780,"kind":"organization","name":"CREDIT ACCEPTANCE CORP"},"owners":[{"id":29592,"kind":"person","name":"Watson Jill Foss","position":1,"cik":"0001568982","reported_name":"Watson Jill Foss","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2026-07-07T20:20:24.000Z","date":"2026-07-02","kind":"sale","planned":false,"acquired":false,"shares":81,"price":665.28,"value":53887.68,"ownership":{"direct":false,"nature":"See footnote 2"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F15","text":"The price reported in Column 4 is a weighted average price. 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The reporting person undertakes to provide to Credit Acceptance Corporation, any security holder of Credit Acceptance Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in the preceding sentence."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"These shares are owned of record by Jill Foss Watson, as Trustee of the Jill Foss Watson Living Trust."}],"balance_after":85687,"source":{"system":"sec-edgar","filing":"0001193125-26-297504","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":14,"url":"https://www.sec.gov/Archives/edgar/data/885550/000119312526297504/ownership.xml","form_type":"4"}},{"id":714025,"issuer":{"id":3780,"kind":"organization","name":"CREDIT ACCEPTANCE CORP"},"owners":[{"id":29592,"kind":"person","name":"Watson Jill Foss","position":1,"cik":"0001568982","reported_name":"Watson Jill Foss","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2026-07-07T20:20:24.000Z","date":"2026-07-02","kind":"sale","planned":false,"acquired":false,"shares":813,"price":664.11,"value":539921.43,"ownership":{"direct":false,"nature":"See footnote 2"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F14","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $663.94 to $664.86, inclusive. The reporting person undertakes to provide to Credit Acceptance Corporation, any security holder of Credit Acceptance Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in the preceding sentence."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"These shares are owned of record by Jill Foss Watson, as Trustee of the Jill Foss Watson Living Trust."}],"balance_after":85768,"source":{"system":"sec-edgar","filing":"0001193125-26-297504","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":13,"url":"https://www.sec.gov/Archives/edgar/data/885550/000119312526297504/ownership.xml","form_type":"4"}},{"id":714024,"issuer":{"id":3780,"kind":"organization","name":"CREDIT ACCEPTANCE CORP"},"owners":[{"id":29592,"kind":"person","name":"Watson Jill Foss","position":1,"cik":"0001568982","reported_name":"Watson Jill Foss","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2026-07-07T20:20:24.000Z","date":"2026-07-02","kind":"sale","planned":false,"acquired":false,"shares":503,"price":663.28,"value":333629.84,"ownership":{"direct":false,"nature":"See footnote 2"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F13","text":"The price reported in Column 4 is a weighted average price. 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The reporting person undertakes to provide to Credit Acceptance Corporation, any security holder of Credit Acceptance Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in the preceding sentence."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"These shares are owned of record by Jill Foss Watson, as Trustee of the Jill Foss Watson Living Trust."}],"balance_after":86581,"source":{"system":"sec-edgar","filing":"0001193125-26-297504","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":12,"url":"https://www.sec.gov/Archives/edgar/data/885550/000119312526297504/ownership.xml","form_type":"4"}},{"id":714023,"issuer":{"id":3780,"kind":"organization","name":"CREDIT ACCEPTANCE CORP"},"owners":[{"id":29592,"kind":"person","name":"Watson Jill Foss","position":1,"cik":"0001568982","reported_name":"Watson Jill Foss","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2026-07-07T20:20:24.000Z","date":"2026-07-02","kind":"sale","planned":false,"acquired":false,"shares":181,"price":661.67,"value":119762.27,"ownership":{"direct":false,"nature":"See footnote 2"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F12","text":"The price reported in Column 4 is a weighted average price. 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The reporting person undertakes to provide to Credit Acceptance Corporation, any security holder of Credit Acceptance Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in the preceding sentence."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"These shares are owned of record by Jill Foss Watson, as Trustee of the Jill Foss Watson Living Trust."}],"balance_after":87084,"source":{"system":"sec-edgar","filing":"0001193125-26-297504","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":11,"url":"https://www.sec.gov/Archives/edgar/data/885550/000119312526297504/ownership.xml","form_type":"4"}},{"id":714022,"issuer":{"id":3780,"kind":"organization","name":"CREDIT ACCEPTANCE CORP"},"owners":[{"id":29592,"kind":"person","name":"Watson Jill Foss","position":1,"cik":"0001568982","reported_name":"Watson Jill Foss","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2026-07-07T20:20:24.000Z","date":"2026-07-02","kind":"sale","planned":false,"acquired":false,"shares":156,"price":659.02,"value":102807.12,"ownership":{"direct":false,"nature":"See footnote 2"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F11","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $658.96 to $659.04, inclusive. The reporting person undertakes to provide to Credit Acceptance Corporation, any security holder of Credit Acceptance Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in the preceding sentence."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"These shares are owned of record by Jill Foss Watson, as Trustee of the Jill Foss Watson Living Trust."}],"balance_after":87265,"source":{"system":"sec-edgar","filing":"0001193125-26-297504","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":10,"url":"https://www.sec.gov/Archives/edgar/data/885550/000119312526297504/ownership.xml","form_type":"4"}},{"id":714021,"issuer":{"id":3780,"kind":"organization","name":"CREDIT ACCEPTANCE CORP"},"owners":[{"id":29592,"kind":"person","name":"Watson Jill Foss","position":1,"cik":"0001568982","reported_name":"Watson Jill Foss","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2026-07-07T20:20:24.000Z","date":"2026-07-02","kind":"sale","planned":false,"acquired":false,"shares":175,"price":657.11,"value":114994.25,"ownership":{"direct":false,"nature":"See footnote 2"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F10","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $657.03 to $657.64, inclusive. The reporting person undertakes to provide to Credit Acceptance Corporation, any security holder of Credit Acceptance Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in the preceding sentence."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"These shares are owned of record by Jill Foss Watson, as Trustee of the Jill Foss Watson Living Trust."}],"balance_after":87421,"source":{"system":"sec-edgar","filing":"0001193125-26-297504","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/885550/000119312526297504/ownership.xml","form_type":"4"}},{"id":714020,"issuer":{"id":3780,"kind":"organization","name":"CREDIT ACCEPTANCE CORP"},"owners":[{"id":29592,"kind":"person","name":"Watson Jill Foss","position":1,"cik":"0001568982","reported_name":"Watson Jill Foss","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2026-07-07T20:20:24.000Z","date":"2026-07-02","kind":"sale","planned":false,"acquired":false,"shares":869,"price":654.76,"value":568986.44,"ownership":{"direct":false,"nature":"See footnote 2"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F9","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $654.48 to $655.30, inclusive. The reporting person undertakes to provide to Credit Acceptance Corporation, any security holder of Credit Acceptance Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in the preceding sentence."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"These shares are owned of record by Jill Foss Watson, as Trustee of the Jill Foss Watson Living Trust."}],"balance_after":87596,"source":{"system":"sec-edgar","filing":"0001193125-26-297504","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/885550/000119312526297504/ownership.xml","form_type":"4"}},{"id":714019,"issuer":{"id":3780,"kind":"organization","name":"CREDIT ACCEPTANCE CORP"},"owners":[{"id":29592,"kind":"person","name":"Watson Jill Foss","position":1,"cik":"0001568982","reported_name":"Watson Jill Foss","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2026-07-07T20:20:24.000Z","date":"2026-07-02","kind":"sale","planned":false,"acquired":false,"shares":819,"price":653.79,"value":535454.01,"ownership":{"direct":false,"nature":"See footnote 2"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F8","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $653.39 to $654.33, inclusive. 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