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The shares were sold in multiple transactions at prices ranging from $92.04 to $92.85, inclusive. 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63,988 options were vested at issuance and the remaining options vested daily on a pro-rata basis from June 26, 2013 through September 25, 2016."}],"balance_after":18467,"derivative":{"exercise_price":17,"expiration_date":"2021-11-04","underlying":"Common Stock, par value $0.01","underlying_shares":14900},"source":{"system":"sec-edgar","filing":"0001402057-19-000005","document":"wf-form4_154724369188836.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1402057/000140205719000005/wf-form4_154724369188836.xml","form_type":"4"}},{"id":3697181,"issuer":{"id":3281,"kind":"organization","name":"CDW Corp","symbol":"CDW"},"owners":[{"id":45631,"kind":"person","name":"CORLEY CHRISTINA M","position":1,"cik":"0001270206","reported_name":"CORLEY CHRISTINA M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common Stock, par value $0.01","published_at":"2019-01-11T21:55:08.000Z","date":"2019-01-09","kind":"sale","acquired":false,"shares":1100,"price":81.85,"value":90035.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 22, 2018."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported is the average weighted price. 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The reporting person undertakes to provide to the SEC, the Issuer and any security holder, the full information regarding the number of shares and the prices at which the shares were sold."}],"balance_after":36176.87,"source":{"system":"sec-edgar","filing":"0001402057-19-000005","document":"wf-form4_154724369188836.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1402057/000140205719000005/wf-form4_154724369188836.xml","form_type":"4"}},{"id":3697180,"issuer":{"id":3281,"kind":"organization","name":"CDW Corp","symbol":"CDW"},"owners":[{"id":45631,"kind":"person","name":"CORLEY CHRISTINA M","position":1,"cik":"0001270206","reported_name":"CORLEY CHRISTINA M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common Stock, par value $0.01","published_at":"2019-01-11T21:55:08.000Z","date":"2019-01-09","kind":"sale","acquired":false,"shares":13800,"price":81.45,"value":1124010.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 22, 2018."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported is the average weighted price. 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The reporting person undertakes to provide to the SEC, the Issuer and any security holder, the full information regarding the number of shares and the prices at which the shares were sold."}],"balance_after":37276.87,"source":{"system":"sec-edgar","filing":"0001402057-19-000005","document":"wf-form4_154724369188836.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1402057/000140205719000005/wf-form4_154724369188836.xml","form_type":"4"}},{"id":3697179,"issuer":{"id":3281,"kind":"organization","name":"CDW Corp","symbol":"CDW"},"owners":[{"id":45631,"kind":"person","name":"CORLEY CHRISTINA M","position":1,"cik":"0001270206","reported_name":"CORLEY CHRISTINA M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common Stock, par value $0.01","published_at":"2019-01-11T21:55:08.000Z","date":"2019-01-09","kind":"exercise","acquired":true,"shares":14900,"price":17,"value":253300.0,"ownership":{"direct":true},"balance_after":51076.87,"source":{"system":"sec-edgar","filing":"0001402057-19-000005","document":"wf-form4_154724369188836.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1402057/000140205719000005/wf-form4_154724369188836.xml","form_type":"4"}},{"id":3730543,"issuer":{"id":3281,"kind":"organization","name":"CDW Corp","symbol":"CDW"},"owners":[{"id":45631,"kind":"person","name":"CORLEY CHRISTINA M","position":1,"cik":"0001270206","reported_name":"CORLEY CHRISTINA M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Employee Stock Option (Right to Buy)","published_at":"2018-12-14T22:03:15.000Z","date":"2018-12-12","kind":"exercise","acquired":false,"shares":14900,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"182,667 options were issued at the pricing of the initial public offering of CDW Corporation on June 26, 2013; 63,988 options were vested at issuance and the remaining options vested daily on a pro-rata basis from June 26, 2013 through September 25, 2016."}],"balance_after":33367,"derivative":{"exercise_price":17,"expiration_date":"2021-11-04","underlying":"Common Stock, par value $0.01","underlying_shares":14900},"source":{"system":"sec-edgar","filing":"0001402057-18-000271","document":"wf-form4_154482497832257.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1402057/000140205718000271/wf-form4_154482497832257.xml","form_type":"4"}},{"id":3730542,"issuer":{"id":3281,"kind":"organization","name":"CDW Corp","symbol":"CDW"},"owners":[{"id":45631,"kind":"person","name":"CORLEY CHRISTINA M","position":1,"cik":"0001270206","reported_name":"CORLEY CHRISTINA M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common Stock, par value $0.01","published_at":"2018-12-14T22:03:15.000Z","date":"2018-12-12","kind":"sale","acquired":false,"shares":852,"price":93.09,"value":79312.68,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 22, 2018."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The price reported is the average weighted price. The shares were sold in multiple transactions at prices ranging from $93.01 to $93.12, inclusive. The reporting person undertakes to provide to the SEC, the Issuer and any security holder, the full information regarding the number of shares and the prices at which the shares were sold."}],"balance_after":36176.87,"source":{"system":"sec-edgar","filing":"0001402057-18-000271","document":"wf-form4_154482497832257.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1402057/000140205718000271/wf-form4_154482497832257.xml","form_type":"4"}},{"id":3730541,"issuer":{"id":3281,"kind":"organization","name":"CDW Corp","symbol":"CDW"},"owners":[{"id":45631,"kind":"person","name":"CORLEY CHRISTINA M","position":1,"cik":"0001270206","reported_name":"CORLEY CHRISTINA M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common Stock, par value $0.01","published_at":"2018-12-14T22:03:15.000Z","date":"2018-12-12","kind":"sale","acquired":false,"shares":6791,"price":92.45,"value":627827.95,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 22, 2018."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported is the average weighted price. 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