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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":77288.35,"source":{"system":"sec-edgar","filing":"0001402057-18-000194","document":"wf-form4_153635278440381.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1402057/000140205718000194/wf-form4_153635278440381.xml","form_type":"4"}},{"id":3821890,"issuer":{"id":3281,"kind":"organization","name":"CDW Corp","symbol":"CDW"},"owners":[{"id":38679,"kind":"person","name":"LEAHY CHRISTINE A","position":1,"cik":"0001215336","reported_name":"LEAHY CHRISTINE A","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common Stock, par value $0.01","published_at":"2018-09-07T20:40:00.000Z","date":"2018-09-05","kind":"exercise","acquired":true,"shares":6111,"price":24.29,"value":148436.19,"ownership":{"direct":true},"balance_after":81788.35,"source":{"system":"sec-edgar","filing":"0001402057-18-000194","document":"wf-form4_153635278440381.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1402057/000140205718000194/wf-form4_153635278440381.xml","form_type":"4"}},{"id":3848430,"issuer":{"id":3281,"kind":"organization","name":"CDW Corp","symbol":"CDW"},"owners":[{"id":38679,"kind":"person","name":"LEAHY CHRISTINE A","position":1,"cik":"0001215336","reported_name":"LEAHY CHRISTINE A","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Employee Stock Option (Right to Buy)","published_at":"2018-08-09T21:19:50.000Z","date":"2018-08-07","kind":"exercise","acquired":false,"shares":13889,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"40,140 options were granted of which one third of the shares vested on each of February 25, 2015, 2016, and 2017. The grant was made under the CDW Corporation 2013 Long-Term Incentive Plan."}],"balance_after":26251,"derivative":{"exercise_price":24.29,"expiration_date":"2024-02-25","underlying":"Common Stock, par value $0.01","underlying_shares":13889},"source":{"system":"sec-edgar","filing":"0001402057-18-000187","document":"wf-form4_153384957287877.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1402057/000140205718000187/wf-form4_153384957287877.xml","form_type":"4"}},{"id":3848429,"issuer":{"id":3281,"kind":"organization","name":"CDW Corp","symbol":"CDW"},"owners":[{"id":38679,"kind":"person","name":"LEAHY CHRISTINE A","position":1,"cik":"0001215336","reported_name":"LEAHY CHRISTINE A","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common Stock, par value $0.01","published_at":"2018-08-09T21:19:50.000Z","date":"2018-08-07","kind":"sale","acquired":false,"shares":17500,"price":86.15,"value":1507625.0,"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. The shares were sold in multiple transactions at prices ranging from $85.65 to $86.47, 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":75677.35,"source":{"system":"sec-edgar","filing":"0001402057-18-000187","document":"wf-form4_153384957287877.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1402057/000140205718000187/wf-form4_153384957287877.xml","form_type":"4"}},{"id":3848428,"issuer":{"id":3281,"kind":"organization","name":"CDW Corp","symbol":"CDW"},"owners":[{"id":38679,"kind":"person","name":"LEAHY CHRISTINE A","position":1,"cik":"0001215336","reported_name":"LEAHY CHRISTINE A","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common Stock, par value $0.01","published_at":"2018-08-09T21:19:50.000Z","date":"2018-08-07","kind":"exercise","acquired":true,"shares":13889,"price":24.29,"value":337363.81,"ownership":{"direct":true},"balance_after":93177.35,"source":{"system":"sec-edgar","filing":"0001402057-18-000187","document":"wf-form4_153384957287877.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1402057/000140205718000187/wf-form4_153384957287877.xml","form_type":"4"}},{"id":3869212,"issuer":{"id":3281,"kind":"organization","name":"CDW Corp","symbol":"CDW"},"owners":[{"id":38679,"kind":"person","name":"LEAHY CHRISTINE A","position":1,"cik":"0001215336","reported_name":"LEAHY CHRISTINE A","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common Stock, par value $0.01","published_at":"2018-07-11T20:30:42.000Z","date":"2018-07-10","kind":"sale","acquired":false,"shares":17500,"price":84.08,"value":1471400.0,"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. The shares were sold in multiple transactions at prices ranging from $83.79 to $84.29, 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":79288.35,"source":{"system":"sec-edgar","filing":"0001402057-18-000170","document":"wf-form4_153134102716099.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1402057/000140205718000170/wf-form4_153134102716099.xml","form_type":"4"}},{"id":3899880,"issuer":{"id":3281,"kind":"organization","name":"CDW Corp","symbol":"CDW"},"owners":[{"id":38679,"kind":"person","name":"LEAHY CHRISTINE A","position":1,"cik":"0001215336","reported_name":"LEAHY CHRISTINE A","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common Stock, par value $0.01","published_at":"2018-06-08T20:18:54.000Z","date":"2018-06-06","kind":"sale","acquired":false,"shares":17500,"price":83.79,"value":1466325.0,"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. The shares were sold in multiple transactions at prices ranging from $83.52 to $84.10, 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":96788.35,"source":{"system":"sec-edgar","filing":"0001402057-18-000137","document":"wf-form4_152848911859754.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1402057/000140205718000137/wf-form4_152848911859754.xml","form_type":"4"}},{"id":3940802,"issuer":{"id":3281,"kind":"organization","name":"CDW Corp","symbol":"CDW"},"owners":[{"id":38679,"kind":"person","name":"LEAHY CHRISTINE A","position":1,"cik":"0001215336","reported_name":"LEAHY CHRISTINE A","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common Stock, par value $0.01","published_at":"2018-05-09T20:28:14.000Z","date":"2018-05-08","kind":"sale","acquired":false,"shares":475,"price":76.7,"value":36432.5,"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. The shares were sold in multiple transactions at prices ranging from $76.65 to $76.73, 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":114288.35,"source":{"system":"sec-edgar","filing":"0001402057-18-000124","document":"wf-form4_152589767946104.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1402057/000140205718000124/wf-form4_152589767946104.xml","form_type":"4"}},{"id":3940801,"issuer":{"id":3281,"kind":"organization","name":"CDW Corp","symbol":"CDW"},"owners":[{"id":38679,"kind":"person","name":"LEAHY CHRISTINE A","position":1,"cik":"0001215336","reported_name":"LEAHY CHRISTINE A","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common Stock, par value $0.01","published_at":"2018-05-09T20:28:14.000Z","date":"2018-05-08","kind":"sale","acquired":false,"shares":17025,"price":76.2,"value":1297305.0,"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. The shares were sold in multiple transactions at prices ranging from $75.64 to $76.62 , 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":114763.35,"source":{"system":"sec-edgar","filing":"0001402057-18-000124","document":"wf-form4_152589767946104.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1402057/000140205718000124/wf-form4_152589767946104.xml","form_type":"4"}},{"id":4019677,"issuer":{"id":3281,"kind":"organization","name":"CDW Corp","symbol":"CDW"},"owners":[{"id":38679,"kind":"person","name":"LEAHY CHRISTINE A","position":1,"cik":"0001215336","reported_name":"LEAHY CHRISTINE A","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Employee Stock Option (Right to Buy)","published_at":"2018-03-02T22:04:51.000Z","date":"2018-03-02","kind":"grant","acquired":true,"shares":41230,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The options vest as to one third of the shares on each of the first three anniversaries of the date of grant.  The grant was made under the CDW Corporation 2013 Long-Term Incentive Plan."}],"balance_after":41230,"derivative":{"exercise_price":73.49,"expiration_date":"2028-02-27","underlying":"Common Stock, par value $0.01","underlying_shares":41230},"source":{"system":"sec-edgar","filing":"0001402057-18-000071","document":"wf-form4_152002827495301.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1402057/000140205718000071/wf-form4_152002827495301.xml","form_type":"4"}},{"id":4054594,"issuer":{"id":3281,"kind":"organization","name":"CDW Corp","symbol":"CDW"},"owners":[{"id":38679,"kind":"person","name":"LEAHY CHRISTINE A","position":1,"cik":"0001215336","reported_name":"LEAHY CHRISTINE A","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common Stock, par value $0.01","published_at":"2018-02-15T22:46:41.000Z","date":"2018-02-14","kind":"tax_withholding","acquired":false,"shares":9817,"price":69.49,"value":682183.33,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Represents shares withheld to cover taxes incurred in connection with the vesting of performance shares."}],"balance_after":131788.35,"source":{"system":"sec-edgar","filing":"0001402057-18-000029","document":"wf-form4_151873478727389.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1402057/000140205718000029/wf-form4_151873478727389.xml","form_type":"4"}},{"id":4054593,"issuer":{"id":3281,"kind":"organization","name":"CDW Corp","symbol":"CDW"},"owners":[{"id":38679,"kind":"person","name":"LEAHY CHRISTINE A","position":1,"cik":"0001215336","reported_name":"LEAHY CHRISTINE A","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"See Remarks"}}],"security":"Common Stock, par value $0.01","published_at":"2018-02-15T22:46:41.000Z","date":"2018-02-14","kind":"grant","acquired":true,"shares":20928.81,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares acquired upon the vesting of performance shares previously granted to the reporting person."}],"balance_after":141605.35,"source":{"system":"sec-edgar","filing":"0001402057-18-000029","document":"wf-form4_151873478727389.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1402057/000140205718000029/wf-form4_151873478727389.xml","form_type":"4"}}],"next_cursor":"2018-02-15T22:46:41.000000Z,4054593"}