{"transactions":[{"id":3451642,"issuer":{"id":2783,"kind":"organization","name":"GATX CORP","symbol":"GATX"},"owners":[{"id":152172,"kind":"person","name":"MUCKIAN WILLIAM M","position":1,"cik":"0001204289","reported_name":"MUCKIAN WILLIAM M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Sr. VP and Controller"}}],"security":"2017 NQ Stock Option (Right to Buy)","published_at":"2019-08-01T17:42:12.000Z","date":"2019-07-31","kind":"exercise","acquired":false,"shares":2000,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":2700,"derivative":{"exercise_price":61.175,"exercise_date":"2018-01-26","expiration_date":"2024-01-26","underlying":"Common Stock","underlying_shares":2000},"source":{"system":"sec-edgar","filing":"0001246360-19-001843","document":"form.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":13,"url":"https://www.sec.gov/Archives/edgar/data/40211/000124636019001843/form.xml","form_type":"4"}},{"id":3451641,"issuer":{"id":2783,"kind":"organization","name":"GATX CORP","symbol":"GATX"},"owners":[{"id":152172,"kind":"person","name":"MUCKIAN WILLIAM M","position":1,"cik":"0001204289","reported_name":"MUCKIAN WILLIAM M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Sr. VP and Controller"}}],"security":"2016 NQ Stock Option (Right to Buy)","published_at":"2019-08-01T17:42:12.000Z","date":"2019-07-31","kind":"exercise","acquired":false,"shares":2200,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":0,"derivative":{"exercise_price":39.185,"exercise_date":"2017-01-28","expiration_date":"2023-01-28","underlying":"Common Stock","underlying_shares":2200},"source":{"system":"sec-edgar","filing":"0001246360-19-001843","document":"form.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":12,"url":"https://www.sec.gov/Archives/edgar/data/40211/000124636019001843/form.xml","form_type":"4"}},{"id":3451640,"issuer":{"id":2783,"kind":"organization","name":"GATX CORP","symbol":"GATX"},"owners":[{"id":152172,"kind":"person","name":"MUCKIAN WILLIAM M","position":1,"cik":"0001204289","reported_name":"MUCKIAN WILLIAM M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Sr. VP and Controller"}}],"security":"Stock-Settled Stock Appreciation Right","published_at":"2019-08-01T17:42:12.000Z","date":"2019-07-30","kind":"exercise","acquired":false,"shares":4900,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":0,"derivative":{"exercise_price":56.91,"exercise_date":"2016-01-29","expiration_date":"2022-01-29","underlying":"Common Stock","underlying_shares":4900},"source":{"system":"sec-edgar","filing":"0001246360-19-001843","document":"form.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":11,"url":"https://www.sec.gov/Archives/edgar/data/40211/000124636019001843/form.xml","form_type":"4"}},{"id":3451639,"issuer":{"id":2783,"kind":"organization","name":"GATX CORP","symbol":"GATX"},"owners":[{"id":152172,"kind":"person","name":"MUCKIAN WILLIAM M","position":1,"cik":"0001204289","reported_name":"MUCKIAN WILLIAM M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Sr. VP and Controller"}}],"security":"Stock-Settled Stock Appreciation Right","published_at":"2019-08-01T17:42:12.000Z","date":"2019-07-30","kind":"exercise","acquired":false,"shares":4000,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":0,"derivative":{"exercise_price":58.345,"exercise_date":"2015-01-30","expiration_date":"2021-01-30","underlying":"Common Stock","underlying_shares":4000},"source":{"system":"sec-edgar","filing":"0001246360-19-001843","document":"form.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":10,"url":"https://www.sec.gov/Archives/edgar/data/40211/000124636019001843/form.xml","form_type":"4"}},{"id":3451638,"issuer":{"id":2783,"kind":"organization","name":"GATX CORP","symbol":"GATX"},"owners":[{"id":152172,"kind":"person","name":"MUCKIAN WILLIAM M","position":1,"cik":"0001204289","reported_name":"MUCKIAN WILLIAM M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Sr. VP and Controller"}}],"security":"Common Stock","published_at":"2019-08-01T17:42:12.000Z","date":"2019-07-31","kind":"sale","acquired":false,"shares":2709,"price":78.2269,"value":211916.6721,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Represents the weighted average sale price. The highest price at which shares were sold was $78.48 and the lowest price at which shares were sold was $77.63"}],"balance_after":7660,"source":{"system":"sec-edgar","filing":"0001246360-19-001843","document":"form.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/40211/000124636019001843/form.xml","form_type":"4"}},{"id":3451637,"issuer":{"id":2783,"kind":"organization","name":"GATX CORP","symbol":"GATX"},"owners":[{"id":152172,"kind":"person","name":"MUCKIAN WILLIAM M","position":1,"cik":"0001204289","reported_name":"MUCKIAN WILLIAM M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Sr. VP and Controller"}}],"security":"Common Stock","published_at":"2019-08-01T17:42:12.000Z","date":"2019-07-31","kind":"sale","acquired":false,"shares":1491,"price":77.0971,"value":114951.7761,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Represents the weighted average sale price. The highest price at which shares were sold was $77.50 and the lowest price at which shares were sold was $76.56"}],"balance_after":10369,"source":{"system":"sec-edgar","filing":"0001246360-19-001843","document":"form.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/40211/000124636019001843/form.xml","form_type":"4"}},{"id":3451636,"issuer":{"id":2783,"kind":"organization","name":"GATX CORP","symbol":"GATX"},"owners":[{"id":152172,"kind":"person","name":"MUCKIAN WILLIAM M","position":1,"cik":"0001204289","reported_name":"MUCKIAN WILLIAM M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Sr. VP and Controller"}}],"security":"Common Stock","published_at":"2019-08-01T17:42:12.000Z","date":"2019-07-31","kind":"sale","acquired":false,"shares":1606,"price":78.304,"value":125756.224,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents the weighted average sale price. The highest price at which shares were sold was $78.44 and the lowest price at which shares were sold was $78.08."}],"balance_after":11860,"source":{"system":"sec-edgar","filing":"0001246360-19-001843","document":"form.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/40211/000124636019001843/form.xml","form_type":"4"}},{"id":3451635,"issuer":{"id":2783,"kind":"organization","name":"GATX CORP","symbol":"GATX"},"owners":[{"id":152172,"kind":"person","name":"MUCKIAN WILLIAM M","position":1,"cik":"0001204289","reported_name":"MUCKIAN WILLIAM M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Sr. VP and Controller"}}],"security":"Common Stock","published_at":"2019-08-01T17:42:12.000Z","date":"2019-07-31","kind":"exercise","acquired":true,"shares":2000,"price":61.175,"value":122350.0,"ownership":{"direct":true},"balance_after":13466,"source":{"system":"sec-edgar","filing":"0001246360-19-001843","document":"form.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/40211/000124636019001843/form.xml","form_type":"4"}},{"id":3451634,"issuer":{"id":2783,"kind":"organization","name":"GATX CORP","symbol":"GATX"},"owners":[{"id":152172,"kind":"person","name":"MUCKIAN WILLIAM M","position":1,"cik":"0001204289","reported_name":"MUCKIAN WILLIAM M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Sr. VP and Controller"}}],"security":"Common Stock","published_at":"2019-08-01T17:42:12.000Z","date":"2019-07-31","kind":"exercise","acquired":true,"shares":2200,"price":39.185,"value":86207.0,"ownership":{"direct":true},"balance_after":11466,"source":{"system":"sec-edgar","filing":"0001246360-19-001843","document":"form.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/40211/000124636019001843/form.xml","form_type":"4"}},{"id":3451633,"issuer":{"id":2783,"kind":"organization","name":"GATX CORP","symbol":"GATX"},"owners":[{"id":152172,"kind":"person","name":"MUCKIAN WILLIAM M","position":1,"cik":"0001204289","reported_name":"MUCKIAN WILLIAM M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Sr. VP and Controller"}}],"security":"Common Stock","published_at":"2019-08-01T17:42:12.000Z","date":"2019-07-30","kind":"tax_withholding","acquired":false,"shares":7294,"price":77.31,"value":563899.14,"ownership":{"direct":true},"balance_after":9266,"source":{"system":"sec-edgar","filing":"0001246360-19-001843","document":"form.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/40211/000124636019001843/form.xml","form_type":"4"}},{"id":3451632,"issuer":{"id":2783,"kind":"organization","name":"GATX CORP","symbol":"GATX"},"owners":[{"id":152172,"kind":"person","name":"MUCKIAN WILLIAM M","position":1,"cik":"0001204289","reported_name":"MUCKIAN WILLIAM M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Sr. VP and Controller"}}],"security":"Common Stock","published_at":"2019-08-01T17:42:12.000Z","date":"2019-07-30","kind":"exercise","acquired":true,"shares":4900,"price":56.91,"value":278859.0,"ownership":{"direct":true},"balance_after":16560,"source":{"system":"sec-edgar","filing":"0001246360-19-001843","document":"form.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/40211/000124636019001843/form.xml","form_type":"4"}},{"id":3451631,"issuer":{"id":2783,"kind":"organization","name":"GATX CORP","symbol":"GATX"},"owners":[{"id":152172,"kind":"person","name":"MUCKIAN WILLIAM M","position":1,"cik":"0001204289","reported_name":"MUCKIAN WILLIAM M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Sr. VP and Controller"}}],"security":"Common Stock","published_at":"2019-08-01T17:42:12.000Z","date":"2019-07-30","kind":"exercise","acquired":true,"shares":4000,"price":58.345,"value":233380.0,"ownership":{"direct":true},"balance_after":11660,"source":{"system":"sec-edgar","filing":"0001246360-19-001843","document":"form.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/40211/000124636019001843/form.xml","form_type":"4"}},{"id":3495154,"issuer":{"id":2783,"kind":"organization","name":"GATX CORP","symbol":"GATX"},"owners":[{"id":152172,"kind":"person","name":"MUCKIAN WILLIAM M","position":1,"cik":"0001204289","reported_name":"MUCKIAN WILLIAM M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Sr. VP and Controller"}}],"security":"2016 NQ Stock Option (Right to Buy)","published_at":"2019-06-11T19:49:11.000Z","date":"2019-06-10","kind":"exercise","acquired":false,"shares":4200,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":2200,"derivative":{"exercise_price":39.185,"exercise_date":"2017-01-28","expiration_date":"2023-01-28","underlying":"Common Stock","underlying_shares":4200},"source":{"system":"sec-edgar","filing":"0001246360-19-001624","document":"form.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/40211/000124636019001624/form.xml","form_type":"4"}},{"id":3495153,"issuer":{"id":2783,"kind":"organization","name":"GATX CORP","symbol":"GATX"},"owners":[{"id":152172,"kind":"person","name":"MUCKIAN WILLIAM M","position":1,"cik":"0001204289","reported_name":"MUCKIAN WILLIAM M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Sr. VP and Controller"}}],"security":"Common Stock","published_at":"2019-06-11T19:49:11.000Z","date":"2019-06-10","kind":"sale","acquired":false,"shares":4200,"price":75.1301,"value":315546.42,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents the weighted average sale price. The highest price at which shares were sold was $75.29 and the lowest price at which shares were sold was $74.82"}],"balance_after":7660,"source":{"system":"sec-edgar","filing":"0001246360-19-001624","document":"form.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/40211/000124636019001624/form.xml","form_type":"4"}},{"id":3495152,"issuer":{"id":2783,"kind":"organization","name":"GATX CORP","symbol":"GATX"},"owners":[{"id":152172,"kind":"person","name":"MUCKIAN WILLIAM M","position":1,"cik":"0001204289","reported_name":"MUCKIAN WILLIAM M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Sr. VP and Controller"}}],"security":"Common Stock","published_at":"2019-06-11T19:49:11.000Z","date":"2019-06-10","kind":"exercise","acquired":true,"shares":4200,"price":39.185,"value":164577.0,"ownership":{"direct":true},"balance_after":11860,"source":{"system":"sec-edgar","filing":"0001246360-19-001624","document":"form.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/40211/000124636019001624/form.xml","form_type":"4"}},{"id":3686323,"issuer":{"id":2783,"kind":"organization","name":"GATX CORP","symbol":"GATX"},"owners":[{"id":152172,"kind":"person","name":"MUCKIAN WILLIAM M","position":1,"cik":"0001204289","reported_name":"MUCKIAN WILLIAM M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Sr. VP and Controller"}}],"security":"2019 NQ Stock Option (Right to Buy)","published_at":"2019-01-28T18:42:13.000Z","date":"2019-01-24","kind":"grant","acquired":true,"shares":4000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"33.33% of Stock Option granted may be exercised commencing 1 year from the date of the grant, an additional 33.33% commencing 2 years from the date of the grant and the remaining 33.34% commencing 3 years from the date of the grant."}],"balance_after":4000,"derivative":{"exercise_price":71.525,"exercise_date":"2020-01-24","expiration_date":"2026-01-24","underlying":"Common Stock","underlying_shares":4000},"source":{"system":"sec-edgar","filing":"0001246360-19-000354","document":"form.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/40211/000124636019000354/form.xml","form_type":"4"}},{"id":3849224,"issuer":{"id":2783,"kind":"organization","name":"GATX CORP","symbol":"GATX"},"owners":[{"id":152172,"kind":"person","name":"MUCKIAN WILLIAM M","position":1,"cik":"0001204289","reported_name":"MUCKIAN WILLIAM M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Sr. VP and Controller"}}],"security":"Stock-Settled Stock Appreciation Right","published_at":"2018-08-09T13:07:16.000Z","date":"2018-08-07","kind":"exercise","acquired":false,"shares":4400,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":0,"derivative":{"exercise_price":45.891,"exercise_date":"2014-01-24","expiration_date":"2020-01-24","underlying":"Common Stock","underlying_shares":4400},"source":{"system":"sec-edgar","filing":"0001246360-18-001998","document":"form.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/40211/000124636018001998/form.xml","form_type":"4"}},{"id":3849223,"issuer":{"id":2783,"kind":"organization","name":"GATX CORP","symbol":"GATX"},"owners":[{"id":152172,"kind":"person","name":"MUCKIAN WILLIAM M","position":1,"cik":"0001204289","reported_name":"MUCKIAN WILLIAM M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Sr. VP and Controller"}}],"security":"Common Stock","published_at":"2018-08-09T13:07:16.000Z","date":"2018-08-08","kind":"sale","acquired":false,"shares":2500,"price":84.94,"value":212350.0,"ownership":{"direct":true},"balance_after":7660,"source":{"system":"sec-edgar","filing":"0001246360-18-001998","document":"form.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/40211/000124636018001998/form.xml","form_type":"4"}},{"id":3849222,"issuer":{"id":2783,"kind":"organization","name":"GATX CORP","symbol":"GATX"},"owners":[{"id":152172,"kind":"person","name":"MUCKIAN WILLIAM M","position":1,"cik":"0001204289","reported_name":"MUCKIAN WILLIAM M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Sr. VP and Controller"}}],"security":"Common Stock","published_at":"2018-08-09T13:07:16.000Z","date":"2018-08-08","kind":"sale","acquired":false,"shares":1430,"price":84.9272,"value":121445.896,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents the weighted average sale price. The highest price at which shares were sold was $85.08 and the lowest price at which shares were sold was $84.70"}],"balance_after":10160,"source":{"system":"sec-edgar","filing":"0001246360-18-001998","document":"form.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/40211/000124636018001998/form.xml","form_type":"4"}},{"id":3849221,"issuer":{"id":2783,"kind":"organization","name":"GATX CORP","symbol":"GATX"},"owners":[{"id":152172,"kind":"person","name":"MUCKIAN WILLIAM M","position":1,"cik":"0001204289","reported_name":"MUCKIAN WILLIAM M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Sr. VP and Controller"}}],"security":"Common Stock","published_at":"2018-08-09T13:07:16.000Z","date":"2018-08-07","kind":"tax_withholding","acquired":false,"shares":2970,"price":84.99,"value":252420.3,"ownership":{"direct":true},"balance_after":11590,"source":{"system":"sec-edgar","filing":"0001246360-18-001998","document":"form.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/40211/000124636018001998/form.xml","form_type":"4"}},{"id":3849220,"issuer":{"id":2783,"kind":"organization","name":"GATX CORP","symbol":"GATX"},"owners":[{"id":152172,"kind":"person","name":"MUCKIAN WILLIAM M","position":1,"cik":"0001204289","reported_name":"MUCKIAN WILLIAM M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Sr. VP and Controller"}}],"security":"Common Stock","published_at":"2018-08-09T13:07:16.000Z","date":"2018-08-07","kind":"exercise","acquired":true,"shares":4400,"price":45.891,"value":201920.4,"ownership":{"direct":true},"balance_after":14560,"source":{"system":"sec-edgar","filing":"0001246360-18-001998","document":"form.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/40211/000124636018001998/form.xml","form_type":"4"}},{"id":4087601,"issuer":{"id":2783,"kind":"organization","name":"GATX CORP","symbol":"GATX"},"owners":[{"id":152172,"kind":"person","name":"MUCKIAN WILLIAM M","position":1,"cik":"0001204289","reported_name":"MUCKIAN WILLIAM M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Sr. VP and Controller"}}],"security":"2018 NQ Stock Option (Right to Buy)","published_at":"2018-01-29T18:49:18.000Z","date":"2018-01-25","kind":"grant","acquired":true,"shares":4200,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"33.33% of Stock Option granted may be exercised commencing 1 year from the date of the grant, an additional 33.33% commencing 2 years from the date of the grant and the remaining 33.34% commencing 3 years from the date of the grant."}],"balance_after":4200,"derivative":{"exercise_price":69.735,"exercise_date":"2019-01-25","expiration_date":"2025-01-25","underlying":"Common Stock","underlying_shares":4200},"source":{"system":"sec-edgar","filing":"0001246360-18-000355","document":"form.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/40211/000124636018000355/form.xml","form_type":"4"}},{"id":4091976,"issuer":{"id":2783,"kind":"organization","name":"GATX CORP","symbol":"GATX"},"owners":[{"id":152172,"kind":"person","name":"MUCKIAN WILLIAM M","position":1,"cik":"0001204289","reported_name":"MUCKIAN WILLIAM M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Sr. VP and Controller"}}],"security":"Stock-Settled Stock Appreciation Right","published_at":"2018-01-24T22:56:11.000Z","date":"2018-01-22","kind":"exercise","acquired":false,"shares":4600,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":0,"derivative":{"exercise_price":44.015,"exercise_date":"2013-01-26","expiration_date":"2019-01-26","underlying":"Common Stock","underlying_shares":4600},"source":{"system":"sec-edgar","filing":"0001246360-18-000294","document":"form.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/40211/000124636018000294/form.xml","form_type":"4"}},{"id":4091975,"issuer":{"id":2783,"kind":"organization","name":"GATX CORP","symbol":"GATX"},"owners":[{"id":152172,"kind":"person","name":"MUCKIAN WILLIAM M","position":1,"cik":"0001204289","reported_name":"MUCKIAN WILLIAM M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Sr. VP and Controller"}}],"security":"Common Stock","published_at":"2018-01-24T22:56:11.000Z","date":"2018-01-23","kind":"sale","acquired":false,"shares":1109,"price":69.0785,"value":76608.0565,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Represents the weighted average sale price. The highest price at which shares were sold was $69.6 and the lowest price at which shares were sold was $68.93"}],"balance_after":10160,"source":{"system":"sec-edgar","filing":"0001246360-18-000294","document":"form.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/40211/000124636018000294/form.xml","form_type":"4"}},{"id":4091974,"issuer":{"id":2783,"kind":"organization","name":"GATX CORP","symbol":"GATX"},"owners":[{"id":152172,"kind":"person","name":"MUCKIAN WILLIAM M","position":1,"cik":"0001204289","reported_name":"MUCKIAN WILLIAM M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Sr. VP and Controller"}}],"security":"Common Stock","published_at":"2018-01-24T22:56:11.000Z","date":"2018-01-22","kind":"tax_withholding","acquired":false,"shares":3491,"price":69.46,"value":242484.86,"ownership":{"direct":true},"balance_after":11269,"source":{"system":"sec-edgar","filing":"0001246360-18-000294","document":"form.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/40211/000124636018000294/form.xml","form_type":"4"}},{"id":4091973,"issuer":{"id":2783,"kind":"organization","name":"GATX CORP","symbol":"GATX"},"owners":[{"id":152172,"kind":"person","name":"MUCKIAN WILLIAM M","position":1,"cik":"0001204289","reported_name":"MUCKIAN WILLIAM M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Sr. VP and Controller"}}],"security":"Common Stock","published_at":"2018-01-24T22:56:11.000Z","date":"2018-01-22","kind":"exercise","acquired":true,"shares":4600,"price":44.015,"value":202469.0,"ownership":{"direct":true},"balance_after":14760,"source":{"system":"sec-edgar","filing":"0001246360-18-000294","document":"form.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/40211/000124636018000294/form.xml","form_type":"4"}},{"id":4381611,"issuer":{"id":2783,"kind":"organization","name":"GATX CORP","symbol":"GATX"},"owners":[{"id":152172,"kind":"person","name":"MUCKIAN WILLIAM M","position":1,"cik":"0001204289","reported_name":"MUCKIAN WILLIAM M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Sr. VP and Controller"}}],"security":"Common Stock 401(k)","published_at":"2017-03-17T21:28:11.000Z","date":"2017-03-16","kind":"other","acquired":false,"shares":1683,"price":59.4,"value":99970.2,"ownership":{"direct":false,"nature":"401(k) Plan"},"balance_after":1177,"source":{"system":"sec-edgar","filing":"0001246360-17-001414","document":"form.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/40211/000124636017001414/form.xml","form_type":"4"}},{"id":4381610,"issuer":{"id":2783,"kind":"organization","name":"GATX CORP","symbol":"GATX"},"owners":[{"id":152172,"kind":"person","name":"MUCKIAN WILLIAM M","position":1,"cik":"0001204289","reported_name":"MUCKIAN WILLIAM M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Sr. VP and Controller"}}],"security":"Common Stock","published_at":"2017-03-17T21:28:11.000Z","date":"2017-03-16","kind":"sale","acquired":false,"shares":1000,"price":59.0597,"value":59059.7,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents the weighted average sale price. The highest price at which shares were sold was $59.14 and the lowest price at which shares were sold was $59.00"}],"balance_after":10160,"source":{"system":"sec-edgar","filing":"0001246360-17-001414","document":"form.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/40211/000124636017001414/form.xml","form_type":"4"}},{"id":4478649,"issuer":{"id":2783,"kind":"organization","name":"GATX CORP","symbol":"GATX"},"owners":[{"id":152172,"kind":"person","name":"MUCKIAN WILLIAM M","position":1,"cik":"0001204289","reported_name":"MUCKIAN WILLIAM M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Sr. VP and Controller"}}],"security":"2017 NQ Stock Option (Right to Buy)","published_at":"2017-01-30T22:42:10.000Z","date":"2017-01-26","kind":"grant","acquired":true,"shares":4700,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"33.33% of Stock Option granted may be exercised commencing 1 year from the date of the grant, an additional 33.33% commencing 2 years from the date of the grant and the remaining 33.34% commencing 3 years from the date of the grant."}],"balance_after":4700,"derivative":{"exercise_price":61.175,"exercise_date":"2018-01-26","expiration_date":"2024-01-26","underlying":"Common Stock","underlying_shares":4700},"source":{"system":"sec-edgar","filing":"0001246360-17-000385","document":"form.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/40211/000124636017000385/form.xml","form_type":"4"}},{"id":4560166,"issuer":{"id":2783,"kind":"organization","name":"GATX CORP","symbol":"GATX"},"owners":[{"id":152172,"kind":"person","name":"MUCKIAN WILLIAM M","position":1,"cik":"0001204289","reported_name":"MUCKIAN WILLIAM M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Sr. VP and Controller"}}],"security":"Common Stock","published_at":"2016-11-14T11:00:31.000Z","date":"2016-11-09","kind":"sale","acquired":false,"shares":308,"price":48.1609,"value":14833.5572,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Represents the weighted average sale price. The highest price at which shares were sold was $48.25 and the lowest price at which shares were sold was $48.03"}],"balance_after":11160.656,"source":{"system":"sec-edgar","filing":"0001246360-16-007132","document":"form.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/40211/000124636016007132/form.xml","form_type":"4"}},{"id":4560165,"issuer":{"id":2783,"kind":"organization","name":"GATX CORP","symbol":"GATX"},"owners":[{"id":152172,"kind":"person","name":"MUCKIAN WILLIAM M","position":1,"cik":"0001204289","reported_name":"MUCKIAN WILLIAM M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Sr. VP and Controller"}}],"security":"Common Stock","published_at":"2016-11-14T11:00:31.000Z","date":"2016-11-09","kind":"sale","acquired":false,"shares":3010,"price":47.3147,"value":142417.247,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents the weighted average sale price. The highest price at which shares were sold was $47.94 and the lowest price at which shares were sold was $47.00"}],"balance_after":11468.656,"source":{"system":"sec-edgar","filing":"0001246360-16-007132","document":"form.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/40211/000124636016007132/form.xml","form_type":"4"}},{"id":4574501,"issuer":{"id":2783,"kind":"organization","name":"GATX CORP","symbol":"GATX"},"owners":[{"id":152172,"kind":"person","name":"MUCKIAN WILLIAM M","position":1,"cik":"0001204289","reported_name":"MUCKIAN WILLIAM M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Sr. VP and Controller"}}],"security":"Stock-Settled Stock Appreciation Right","published_at":"2016-10-26T21:42:11.000Z","date":"2016-10-24","kind":"exercise","acquired":false,"shares":5800,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":0,"derivative":{"exercise_price":33.935,"exercise_date":"2012-01-27","expiration_date":"2018-01-27","underlying":"Common Stock","underlying_shares":5800},"source":{"system":"sec-edgar","filing":"0001246360-16-007001","document":"form.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/40211/000124636016007001/form.xml","form_type":"4"}},{"id":4574500,"issuer":{"id":2783,"kind":"organization","name":"GATX CORP","symbol":"GATX"},"owners":[{"id":152172,"kind":"person","name":"MUCKIAN WILLIAM M","position":1,"cik":"0001204289","reported_name":"MUCKIAN WILLIAM M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Sr. VP and Controller"}}],"security":"Common Stock","published_at":"2016-10-26T21:42:11.000Z","date":"2016-10-25","kind":"sale","acquired":false,"shares":1300,"price":46.0192,"value":59824.96,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents the weighted average sale price. The highest price at which shares were sold was $46.19 and the lowest price at which shares were sold was $46.00"}],"balance_after":14478.656,"source":{"system":"sec-edgar","filing":"0001246360-16-007001","document":"form.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/40211/000124636016007001/form.xml","form_type":"4"}},{"id":4574499,"issuer":{"id":2783,"kind":"organization","name":"GATX CORP","symbol":"GATX"},"owners":[{"id":152172,"kind":"person","name":"MUCKIAN WILLIAM M","position":1,"cik":"0001204289","reported_name":"MUCKIAN WILLIAM M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Sr. VP and Controller"}}],"security":"Common Stock","published_at":"2016-10-26T21:42:11.000Z","date":"2016-10-24","kind":"tax_withholding","acquired":false,"shares":4697,"price":46.875,"value":220171.875,"ownership":{"direct":true},"balance_after":15778.656,"source":{"system":"sec-edgar","filing":"0001246360-16-007001","document":"form.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/40211/000124636016007001/form.xml","form_type":"4"}},{"id":4574498,"issuer":{"id":2783,"kind":"organization","name":"GATX CORP","symbol":"GATX"},"owners":[{"id":152172,"kind":"person","name":"MUCKIAN WILLIAM M","position":1,"cik":"0001204289","reported_name":"MUCKIAN WILLIAM M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Sr. VP and Controller"}}],"security":"Common Stock","published_at":"2016-10-26T21:42:11.000Z","date":"2016-10-24","kind":"exercise","acquired":true,"shares":5800,"price":33.935,"value":196823.0,"ownership":{"direct":true},"balance_after":20475.656,"source":{"system":"sec-edgar","filing":"0001246360-16-007001","document":"form.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/40211/000124636016007001/form.xml","form_type":"4"}}]}