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The reporting person undertakes to provide full information regarding the number of shares sold at each separate price upon request."}],"balance_after":32690,"source":{"system":"sec-edgar","filing":"0001209191-17-059049","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/75677/000120919117059049/doc4.xml","form_type":"4"}},{"id":4272229,"issuer":{"id":3254,"kind":"organization","name":"PACKAGING CORP OF AMERICA"},"owners":[{"id":137136,"kind":"person","name":"Walton Thomas W.H.","position":1,"cik":"0001472335","reported_name":"Walton Thomas W.H.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP"}}],"security":"Common Stock","published_at":"2017-06-27T17:59:03.000Z","date":"2017-06-25","kind":"tax_withholding","acquired":false,"shares":5097,"price":111.08,"value":566174.76,"ownership":{"direct":true},"balance_after":38717,"source":{"system":"sec-edgar","filing":"0001209191-17-041922","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/75677/000120919117041922/doc4.xml","form_type":"4"}},{"id":4272228,"issuer":{"id":3254,"kind":"organization","name":"PACKAGING CORP OF AMERICA"},"owners":[{"id":137136,"kind":"person","name":"Walton Thomas W.H.","position":1,"cik":"0001472335","reported_name":"Walton Thomas W.H.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP"}}],"security":"Common Stock","published_at":"2017-06-27T17:59:03.000Z","date":"2017-06-24","kind":"grant","acquired":true,"shares":863,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Award in connection with vesting of 2013 performance units."}],"balance_after":43814,"source":{"system":"sec-edgar","filing":"0001209191-17-041922","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/75677/000120919117041922/doc4.xml","form_type":"4"}},{"id":4274162,"issuer":{"id":3254,"kind":"organization","name":"PACKAGING CORP OF AMERICA"},"owners":[{"id":137136,"kind":"person","name":"Walton Thomas W.H.","position":1,"cik":"0001472335","reported_name":"Walton Thomas W.H.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP"}}],"security":"Common Stock","published_at":"2017-06-23T21:02:43.000Z","date":"2017-06-21","kind":"grant","acquired":true,"shares":2857,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":42951,"source":{"system":"sec-edgar","filing":"0001209191-17-041701","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/75677/000120919117041701/doc4.xml","form_type":"4"}},{"id":4416240,"issuer":{"id":3254,"kind":"organization","name":"PACKAGING CORP OF AMERICA"},"owners":[{"id":137136,"kind":"person","name":"Walton Thomas W.H.","position":1,"cik":"0001472335","reported_name":"Walton Thomas W.H.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP"}}],"security":"Common Stock","published_at":"2017-03-01T18:04:14.000Z","date":"2017-02-28","kind":"grant","acquired":true,"shares":5750,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On February 28, 2017, the Section 162(m) subcommittee of the compensation committee of the registrant's board of directors certified attainment of the performance measure under the performance units awarded to reporting person on June 24, 2013. Performance was achieved at the 100% level, which will result in the reported number of shares being paid out on June 24, 2017, the vesting date of the units, subject to continued service by the reporting person through such date. The committee has the discretion to award additional shares up to 20% of the number of units on or around the vesting date."}],"balance_after":40094,"source":{"system":"sec-edgar","filing":"0001209191-17-015667","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/75677/000120919117015667/doc4.xml","form_type":"4"}}]}