{"transactions":[{"id":3324842,"issuer":{"id":707,"kind":"organization","name":"COLUMBIA BANKING SYSTEM, INC.","symbol":"COLB"},"owners":[{"id":152681,"kind":"person","name":"Robbins Hadley S","position":1,"cik":"0001392443","reported_name":"Robbins Hadley S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT & CEO"}}],"security":"Common Stock","published_at":"2020-01-03T18:42:28.000Z","date":"2019-12-31","kind":"tax_withholding","acquired":false,"shares":2635,"price":40.685,"value":107204.975,"ownership":{"direct":true},"balance_after":26763,"source":{"system":"sec-edgar","filing":"0000887343-20-000008","document":"wf-form4_157807692956709.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/887343/000088734320000008/wf-form4_157807692956709.xml","form_type":"4"}},{"id":3324841,"issuer":{"id":707,"kind":"organization","name":"COLUMBIA BANKING SYSTEM, INC.","symbol":"COLB"},"owners":[{"id":152681,"kind":"person","name":"Robbins Hadley S","position":1,"cik":"0001392443","reported_name":"Robbins Hadley S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT & CEO"}}],"security":"Common Stock","published_at":"2020-01-03T18:42:28.000Z","date":"2019-12-31","kind":"other","acquired":true,"shares":6695,"price":40.685,"value":272386.075,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Shares issued as modification of outstanding unvested time based Restricted Stock Awards, upon retirement."}],"balance_after":29398,"source":{"system":"sec-edgar","filing":"0000887343-20-000008","document":"wf-form4_157807692956709.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/887343/000088734320000008/wf-form4_157807692956709.xml","form_type":"4"}},{"id":3324840,"issuer":{"id":707,"kind":"organization","name":"COLUMBIA BANKING SYSTEM, INC.","symbol":"COLB"},"owners":[{"id":152681,"kind":"person","name":"Robbins Hadley S","position":1,"cik":"0001392443","reported_name":"Robbins Hadley S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT & CEO"}}],"security":"Common Stock","published_at":"2020-01-03T18:42:28.000Z","date":"2019-12-31","kind":"other","acquired":false,"shares":14485,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Unvested Restricted Stock - Cancelled for modification on Retirement."}],"balance_after":22703,"source":{"system":"sec-edgar","filing":"0000887343-20-000008","document":"wf-form4_157807692956709.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/887343/000088734320000008/wf-form4_157807692956709.xml","form_type":"4"}},{"id":3546936,"issuer":{"id":707,"kind":"organization","name":"COLUMBIA BANKING SYSTEM, INC.","symbol":"COLB"},"owners":[{"id":152681,"kind":"person","name":"Robbins Hadley S","position":1,"cik":"0001392443","reported_name":"Robbins Hadley S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT & CEO"}}],"security":"Common Stock","published_at":"2019-04-29T20:45:34.000Z","date":"2019-04-26","kind":"tax_withholding","acquired":false,"shares":3908,"price":36.71,"value":143462.68,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares withheld at vesting to cover taxes."}],"balance_after":37188,"source":{"system":"sec-edgar","filing":"0000887343-19-000086","document":"wf-form4_155657071873913.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/887343/000088734319000086/wf-form4_155657071873913.xml","form_type":"4"}},{"id":3574397,"issuer":{"id":707,"kind":"organization","name":"COLUMBIA BANKING SYSTEM, INC.","symbol":"COLB"},"owners":[{"id":152681,"kind":"person","name":"Robbins Hadley S","position":1,"cik":"0001392443","reported_name":"Robbins Hadley S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT & CEO"}}],"security":"Common Stock","published_at":"2019-03-29T19:19:32.000Z","date":"2019-03-27","kind":"grant","acquired":true,"shares":5395,"price":32.01,"value":172693.95,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Restricted Stock Award"}],"balance_after":41096,"source":{"system":"sec-edgar","filing":"0000887343-19-000077","document":"wf-form4_155388715699965.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/887343/000088734319000077/wf-form4_155388715699965.xml","form_type":"4"}},{"id":3577590,"issuer":{"id":707,"kind":"organization","name":"COLUMBIA BANKING SYSTEM, INC.","symbol":"COLB"},"owners":[{"id":152681,"kind":"person","name":"Robbins Hadley S","position":1,"cik":"0001392443","reported_name":"Robbins Hadley S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT & CEO"}}],"security":"Common Stock","published_at":"2019-03-27T18:10:37.000Z","date":"2019-03-25","kind":"tax_withholding","acquired":false,"shares":323,"price":31.07,"value":10035.61,"ownership":{"direct":true},"balance_after":35701,"source":{"system":"sec-edgar","filing":"0000887343-19-000062","document":"wf-form4_155371022201758.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/887343/000088734319000062/wf-form4_155371022201758.xml","form_type":"4"}},{"id":3596285,"issuer":{"id":707,"kind":"organization","name":"COLUMBIA BANKING SYSTEM, INC.","symbol":"COLB"},"owners":[{"id":152681,"kind":"person","name":"Robbins Hadley S","position":1,"cik":"0001392443","reported_name":"Robbins Hadley S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT & CEO"}}],"security":"Common Stock","published_at":"2019-03-14T20:39:21.000Z","date":"2019-02-27","kind":"tax_withholding","acquired":false,"shares":987,"price":36.29,"value":35818.23,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Correction to tax liability on vesting of performance awards and the number of shares cancelled to cover taxes."}],"balance_after":36024,"source":{"system":"sec-edgar","filing":"0000887343-19-000050","document":"wf-form4a_155259594680346.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/887343/000088734319000050/wf-form4a_155259594680346.xml","form_type":"4/A","original_submission_date":"2019-03-02"}},{"id":3596284,"issuer":{"id":707,"kind":"organization","name":"COLUMBIA BANKING SYSTEM, INC.","symbol":"COLB"},"owners":[{"id":152681,"kind":"person","name":"Robbins Hadley S","position":1,"cik":"0001392443","reported_name":"Robbins Hadley S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT & CEO"}}],"security":"Common Stock","published_at":"2019-03-14T20:39:21.000Z","date":"2019-02-27","kind":"grant","acquired":true,"shares":4183,"price":36.29,"value":151801.07,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"2016 Performance Grant Vesting"}],"balance_after":37011,"source":{"system":"sec-edgar","filing":"0000887343-19-000050","document":"wf-form4a_155259594680346.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/887343/000088734319000050/wf-form4a_155259594680346.xml","form_type":"4/A","original_submission_date":"2019-03-02"}},{"id":3624645,"issuer":{"id":707,"kind":"organization","name":"COLUMBIA BANKING SYSTEM, INC.","symbol":"COLB"},"owners":[{"id":152681,"kind":"person","name":"Robbins Hadley S","position":1,"cik":"0001392443","reported_name":"Robbins Hadley S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT & CEO"}}],"security":"Common Stock","published_at":"2019-03-02T00:33:00.000Z","date":"2019-02-27","kind":"tax_withholding","acquired":false,"shares":552,"price":36.29,"value":20032.08,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Shares withheld at vesting to cover taxes."}],"balance_after":36459,"source":{"system":"sec-edgar","filing":"0000887343-19-000039","document":"wf-form4_155148676650534.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/887343/000088734319000039/wf-form4_155148676650534.xml","form_type":"4"}},{"id":3624644,"issuer":{"id":707,"kind":"organization","name":"COLUMBIA BANKING SYSTEM, INC.","symbol":"COLB"},"owners":[{"id":152681,"kind":"person","name":"Robbins Hadley S","position":1,"cik":"0001392443","reported_name":"Robbins Hadley S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT & CEO"}}],"security":"Common Stock","published_at":"2019-03-02T00:33:00.000Z","date":"2019-02-27","kind":"grant","acquired":true,"shares":4183,"price":36.29,"value":151801.07,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"2016 Performance Grant Vesting"}],"balance_after":37011,"source":{"system":"sec-edgar","filing":"0000887343-19-000039","document":"wf-form4_155148676650534.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/887343/000088734319000039/wf-form4_155148676650534.xml","form_type":"4"}},{"id":3633766,"issuer":{"id":707,"kind":"organization","name":"COLUMBIA BANKING SYSTEM, INC.","symbol":"COLB"},"owners":[{"id":152681,"kind":"person","name":"Robbins Hadley S","position":1,"cik":"0001392443","reported_name":"Robbins Hadley S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT & CEO"}}],"security":"Common Stock","published_at":"2019-02-26T22:05:40.000Z","date":"2019-02-22","kind":"tax_withholding","acquired":false,"shares":486,"price":38.32,"value":18623.52,"ownership":{"direct":true},"balance_after":32828,"source":{"system":"sec-edgar","filing":"0000887343-19-000028","document":"wf-form4_155121872655250.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/887343/000088734319000028/wf-form4_155121872655250.xml","form_type":"4"}},{"id":3982467,"issuer":{"id":707,"kind":"organization","name":"COLUMBIA BANKING SYSTEM, INC.","symbol":"COLB"},"owners":[{"id":152681,"kind":"person","name":"Robbins Hadley S","position":1,"cik":"0001392443","reported_name":"Robbins Hadley S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT & CEO"}}],"security":"Common Stock","published_at":"2018-03-27T21:25:37.000Z","date":"2018-03-23","kind":"tax_withholding","acquired":false,"shares":194,"price":41.22,"value":7996.68,"ownership":{"direct":true},"balance_after":33314,"source":{"system":"sec-edgar","filing":"0000887343-18-000074","document":"wf-form4_152218590805906.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/887343/000088734318000074/wf-form4_152218590805906.xml","form_type":"4"}},{"id":4021888,"issuer":{"id":707,"kind":"organization","name":"COLUMBIA BANKING SYSTEM, INC.","symbol":"COLB"},"owners":[{"id":152681,"kind":"person","name":"Robbins Hadley S","position":1,"cik":"0001392443","reported_name":"Robbins Hadley S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT & CEO"}}],"security":"Common Stock","published_at":"2018-03-03T01:45:31.000Z","date":"2018-02-28","kind":"tax_withholding","acquired":false,"shares":892,"price":43.44,"value":38748.48,"ownership":{"direct":true},"balance_after":33508,"source":{"system":"sec-edgar","filing":"0000887343-18-000057","document":"wf-form4_152004151689117.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/887343/000088734318000057/wf-form4_152004151689117.xml","form_type":"4"}},{"id":4021887,"issuer":{"id":707,"kind":"organization","name":"COLUMBIA BANKING SYSTEM, INC.","symbol":"COLB"},"owners":[{"id":152681,"kind":"person","name":"Robbins Hadley S","position":1,"cik":"0001392443","reported_name":"Robbins Hadley S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT & CEO"}}],"security":"Common Stock","published_at":"2018-03-03T01:45:31.000Z","date":"2018-02-28","kind":"grant","acquired":true,"shares":3679,"price":43.44,"value":159815.76,"ownership":{"direct":true},"balance_after":34400,"source":{"system":"sec-edgar","filing":"0000887343-18-000057","document":"wf-form4_152004151689117.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/887343/000088734318000057/wf-form4_152004151689117.xml","form_type":"4"}},{"id":4021882,"issuer":{"id":707,"kind":"organization","name":"COLUMBIA BANKING SYSTEM, INC.","symbol":"COLB"},"owners":[{"id":152681,"kind":"person","name":"Robbins Hadley S","position":1,"cik":"0001392443","reported_name":"Robbins Hadley S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT & CEO"}}],"security":"Common Stock","published_at":"2018-03-02T23:36:29.000Z","date":"2018-02-28","kind":"grant","acquired":true,"shares":3932,"price":41.78,"value":164278.96,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Restricted Stock Award"}],"balance_after":30721,"source":{"system":"sec-edgar","filing":"0000887343-18-000051","document":"wf-form4_152003377503414.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/887343/000088734318000051/wf-form4_152003377503414.xml","form_type":"4"}},{"id":4028498,"issuer":{"id":707,"kind":"organization","name":"COLUMBIA BANKING SYSTEM, INC.","symbol":"COLB"},"owners":[{"id":152681,"kind":"person","name":"Robbins Hadley S","position":1,"cik":"0001392443","reported_name":"Robbins Hadley S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT & CEO"}}],"security":"Common Stock","published_at":"2018-02-28T19:40:24.000Z","date":"2018-02-26","kind":"tax_withholding","acquired":false,"shares":297,"price":42.67,"value":12672.99,"ownership":{"direct":true},"balance_after":26789,"source":{"system":"sec-edgar","filing":"0000887343-18-000036","document":"wf-form4_151984681061991.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/887343/000088734318000036/wf-form4_151984681061991.xml","form_type":"4"}},{"id":4031749,"issuer":{"id":707,"kind":"organization","name":"COLUMBIA BANKING SYSTEM, INC.","symbol":"COLB"},"owners":[{"id":152681,"kind":"person","name":"Robbins Hadley S","position":1,"cik":"0001392443","reported_name":"Robbins Hadley S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT & CEO"}}],"security":"Common Stock","published_at":"2018-02-27T23:53:18.000Z","date":"2018-02-23","kind":"tax_withholding","acquired":false,"shares":204,"price":42.68,"value":8706.72,"ownership":{"direct":true},"balance_after":27086,"source":{"system":"sec-edgar","filing":"0000887343-18-000025","document":"wf-form4_151977558027840.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/887343/000088734318000025/wf-form4_151977558027840.xml","form_type":"4"}},{"id":4266051,"issuer":{"id":707,"kind":"organization","name":"COLUMBIA BANKING SYSTEM, INC.","symbol":"COLB"},"owners":[{"id":152681,"kind":"person","name":"Robbins Hadley S","position":1,"cik":"0001392443","reported_name":"Robbins Hadley S","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"PRESIDENT & CEO"}}],"security":"Common Stock","published_at":"2017-07-05T21:51:28.000Z","date":"2017-07-03","kind":"grant","acquired":true,"shares":1588,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Restricted Stock Award"}],"balance_after":27290,"source":{"system":"sec-edgar","filing":"0000887343-17-000137","document":"wf-form4_149929147341032.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/887343/000088734317000137/wf-form4_149929147341032.xml","form_type":"4"}},{"id":4342561,"issuer":{"id":707,"kind":"organization","name":"COLUMBIA BANKING SYSTEM, INC.","symbol":"COLB"},"owners":[{"id":152681,"kind":"person","name":"Robbins Hadley S","position":1,"cik":"0001392443","reported_name":"Robbins Hadley S","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"INTERIM CEO & COO"}}],"security":"Common Stock","published_at":"2017-04-28T20:19:29.000Z","date":"2017-04-26","kind":"grant","acquired":true,"shares":10000,"price":40.67,"value":406700.0,"ownership":{"direct":true},"balance_after":25702,"source":{"system":"sec-edgar","filing":"0000887343-17-000097","document":"wf-form4_149341074974232.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/887343/000088734317000097/wf-form4_149341074974232.xml","form_type":"4"}},{"id":4365808,"issuer":{"id":707,"kind":"organization","name":"COLUMBIA BANKING SYSTEM, INC.","symbol":"COLB"},"owners":[{"id":152681,"kind":"person","name":"Robbins Hadley S","position":1,"cik":"0001392443","reported_name":"Robbins Hadley S","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"INTERIM CEO & COO"}}],"security":"Common Stock","published_at":"2017-04-03T20:07:54.000Z","date":"2017-03-31","kind":"tax_withholding","acquired":false,"shares":411,"price":38.99,"value":16024.89,"ownership":{"direct":true},"balance_after":15702,"source":{"system":"sec-edgar","filing":"0000887343-17-000086","document":"wf-form4_149125006094982.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/887343/000088734317000086/wf-form4_149125006094982.xml","form_type":"4"}},{"id":4370814,"issuer":{"id":707,"kind":"organization","name":"COLUMBIA BANKING SYSTEM, INC.","symbol":"COLB"},"owners":[{"id":152681,"kind":"person","name":"Robbins Hadley S","position":1,"cik":"0001392443","reported_name":"Robbins Hadley S","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"INTERIM CEO & COO"}}],"security":"Stock Option","published_at":"2017-03-28T20:39:51.000Z","date":"2017-03-27","kind":"other","acquired":false,"shares":1958,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Expiration of stock options"}],"balance_after":0,"derivative":{"exercise_price":136.93,"exercise_date":"2013-04-01","expiration_date":"2017-03-27","underlying":"Common Stock","underlying_shares":1958},"source":{"system":"sec-edgar","filing":"0000887343-17-000084","document":"wf-form4_149073357106761.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/887343/000088734317000084/wf-form4_149073357106761.xml","form_type":"4"}},{"id":4370813,"issuer":{"id":707,"kind":"organization","name":"COLUMBIA BANKING SYSTEM, INC.","symbol":"COLB"},"owners":[{"id":152681,"kind":"person","name":"Robbins Hadley S","position":1,"cik":"0001392443","reported_name":"Robbins Hadley S","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"INTERIM CEO & COO"}}],"security":"Common Stock","published_at":"2017-03-28T20:39:51.000Z","date":"2017-03-24","kind":"tax_withholding","acquired":false,"shares":145,"price":37.72,"value":5469.4,"ownership":{"direct":true},"balance_after":16113,"source":{"system":"sec-edgar","filing":"0000887343-17-000084","document":"wf-form4_149073357106761.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/887343/000088734317000084/wf-form4_149073357106761.xml","form_type":"4"}},{"id":4393407,"issuer":{"id":707,"kind":"organization","name":"COLUMBIA BANKING SYSTEM, INC.","symbol":"COLB"},"owners":[{"id":152681,"kind":"person","name":"Robbins Hadley S","position":1,"cik":"0001392443","reported_name":"Robbins Hadley S","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"INTERIM CEO & COO"}}],"security":"Common Stock","published_at":"2017-03-09T22:27:01.000Z","date":"2017-03-08","kind":"tax_withholding","acquired":false,"shares":754,"price":41.25,"value":31102.5,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Correction to tax liability on vesting of performance awards and the number of shares cancelled to cover taxes."}],"balance_after":16557,"source":{"system":"sec-edgar","filing":"0000887343-17-000070","document":"wf-form4a_148909840785821.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/887343/000088734317000070/wf-form4a_148909840785821.xml","form_type":"4/A","original_submission_date":"2017-02-25"}},{"id":4419191,"issuer":{"id":707,"kind":"organization","name":"COLUMBIA BANKING SYSTEM, INC.","symbol":"COLB"},"owners":[{"id":152681,"kind":"person","name":"Robbins Hadley S","position":1,"cik":"0001392443","reported_name":"Robbins Hadley S","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"INTERIM CEO & COO"}}],"security":"Common","published_at":"2017-03-01T01:38:15.000Z","date":"2017-02-24","kind":"tax_withholding","acquired":false,"shares":196,"price":40.81,"value":7998.76,"ownership":{"direct":true},"balance_after":16258,"source":{"system":"sec-edgar","filing":"0000887343-17-000065","document":"wf-form4_148833228132863.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/887343/000088734317000065/wf-form4_148833228132863.xml","form_type":"4"}},{"id":4425738,"issuer":{"id":707,"kind":"organization","name":"COLUMBIA BANKING SYSTEM, INC.","symbol":"COLB"},"owners":[{"id":152681,"kind":"person","name":"Robbins Hadley S","position":1,"cik":"0001392443","reported_name":"Robbins Hadley S","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, COO & INTERIM CEO"}}],"security":"Common","published_at":"2017-02-25T02:38:05.000Z","date":"2017-02-22","kind":"tax_withholding","acquired":false,"shares":857,"price":41.25,"value":35351.25,"ownership":{"direct":true},"balance_after":16454,"source":{"system":"sec-edgar","filing":"0000887343-17-000042","document":"wf-form4_148799027201085.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/887343/000088734317000042/wf-form4_148799027201085.xml","form_type":"4"}},{"id":4425737,"issuer":{"id":707,"kind":"organization","name":"COLUMBIA BANKING SYSTEM, INC.","symbol":"COLB"},"owners":[{"id":152681,"kind":"person","name":"Robbins Hadley S","position":1,"cik":"0001392443","reported_name":"Robbins Hadley S","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, COO & INTERIM CEO"}}],"security":"Common","published_at":"2017-02-25T02:38:05.000Z","date":"2017-02-22","kind":"grant","acquired":true,"shares":2596,"price":41.25,"value":107085.0,"ownership":{"direct":true},"balance_after":17311,"source":{"system":"sec-edgar","filing":"0000887343-17-000042","document":"wf-form4_148799027201085.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/887343/000088734317000042/wf-form4_148799027201085.xml","form_type":"4"}},{"id":4425732,"issuer":{"id":707,"kind":"organization","name":"COLUMBIA BANKING SYSTEM, INC.","symbol":"COLB"},"owners":[{"id":152681,"kind":"person","name":"Robbins Hadley S","position":1,"cik":"0001392443","reported_name":"Robbins Hadley S","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, COO & INTERIM CEO"}}],"security":"Common","published_at":"2017-02-24T23:56:06.000Z","date":"2017-02-22","kind":"grant","acquired":true,"shares":2714,"price":41.25,"value":111952.5,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Restricted Stock Award"}],"balance_after":14715,"source":{"system":"sec-edgar","filing":"0000887343-17-000034","document":"wf-form4_148798055284643.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/887343/000088734317000034/wf-form4_148798055284643.xml","form_type":"4"}}]}