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The reporting person undertakes to provide to First Interstate BancSystem, Inc., any security holder of First Interstate BancSystem, Inc., or the staff of the Securities and Exchange Commission, upon, request, the full information regarding the number of shares sold at each separate price within the ranges set forth above."}],"balance_after":6737,"source":{"system":"sec-edgar","filing":"0000860413-18-000057","document":"wf-form4a_152416621444733.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/860413/000086041318000057/wf-form4a_152416621444733.xml","form_type":"4/A","original_submission_date":"2017-08-17"}},{"id":3960422,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":45167,"kind":"person","name":"MOSS PATRICIA L","position":1,"cik":"0001190817","reported_name":"MOSS PATRICIA L","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A Common Stock","published_at":"2018-04-19T19:24:44.000Z","date":"2017-06-02","kind":"grant","acquired":true,"shares":716,"price":34.9,"value":24988.4,"ownership":{"direct":true},"balance_after":716,"source":{"system":"sec-edgar","filing":"0000860413-18-000055","document":"wf-form4a_152416587133633.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/860413/000086041318000055/wf-form4a_152416587133633.xml","form_type":"4/A","original_submission_date":"2017-06-02"}},{"id":4093261,"issuer":{"id":4030,"kind":"organization","name":"MDU RESOURCES GROUP INC"},"owners":[{"id":45167,"kind":"person","name":"MOSS PATRICIA L","position":1,"cik":"0001190817","reported_name":"MOSS PATRICIA L","relationship":{"director":true}}],"security":"Common Stock","published_at":"2018-01-23T15:26:52.000Z","date":"2017-12-18","kind":"gift","acquired":false,"shares":984,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Amount reflects corrected balance from previous Form 5 filed on Jan. 2, 2018."}],"balance_after":78525,"source":{"system":"sec-edgar","filing":"0001127602-18-002248","document":"form5a.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/67716/000112760218002248/form5a.xml","form_type":"5/A","original_submission_date":"2018-01-02"}},{"id":4118635,"issuer":{"id":4030,"kind":"organization","name":"MDU RESOURCES GROUP INC"},"owners":[{"id":45167,"kind":"person","name":"MOSS PATRICIA L","position":1,"cik":"0001190817","reported_name":"MOSS PATRICIA L","relationship":{"director":true}}],"security":"Common Stock","published_at":"2018-01-02T21:24:12.000Z","date":"2017-12-18","kind":"gift","acquired":false,"shares":984.5,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":78524.5,"source":{"system":"sec-edgar","filing":"0001127602-18-000130","document":"form5.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/67716/000112760218000130/form5.xml","form_type":"5"}},{"id":4153769,"issuer":{"id":4030,"kind":"organization","name":"MDU RESOURCES GROUP INC"},"owners":[{"id":45167,"kind":"person","name":"MOSS PATRICIA L","position":1,"cik":"0001190817","reported_name":"MOSS PATRICIA L","relationship":{"director":true}}],"security":"Common Stock","published_at":"2017-11-22T19:57:02.000Z","date":"2017-11-21","kind":"grant","acquired":true,"shares":4091,"price":26.883,"value":109978.353,"ownership":{"direct":true},"balance_after":79509,"source":{"system":"sec-edgar","filing":"0001127602-17-033172","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/67716/000112760217033172/form4.xml","form_type":"4"}},{"id":4231571,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":45167,"kind":"person","name":"MOSS PATRICIA L","position":1,"cik":"0001190817","reported_name":"MOSS PATRICIA L","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A Common Stock","published_at":"2017-08-17T19:28:28.000Z","date":"2017-08-17","kind":"sale","acquired":false,"shares":465,"price":35.66,"value":16581.9,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price.  These shares were purchased in multiple transactions at prices ranging from $35.6505 to $35.675.  Reporting Person undertakes to provide to First Interstate BancSystem, Inc., any security holder of First Interstate BancSystem, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding number of shares purchased at each separate price within the range set forth in this Form 4."}],"balance_after":7717,"source":{"system":"sec-edgar","filing":"0001209191-17-049369","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/860413/000120919117049369/doc4.xml","form_type":"4"}},{"id":4296931,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":45167,"kind":"person","name":"MOSS PATRICIA L","position":1,"cik":"0001190817","reported_name":"MOSS PATRICIA L","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A Common Stock","published_at":"2017-06-02T22:47:18.000Z","date":"2017-06-02","kind":"grant","acquired":true,"shares":716,"price":34.9,"value":24988.4,"ownership":{"direct":true},"balance_after":8182,"source":{"system":"sec-edgar","filing":"0001209191-17-037476","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/860413/000120919117037476/doc4.xml","form_type":"4"}},{"id":4298866,"issuer":{"id":175626,"kind":"organization","name":"CASCADE BANCORP","symbol":"CACB"},"owners":[{"id":45167,"kind":"person","name":"MOSS PATRICIA L","position":1,"cik":"0001190817","reported_name":"MOSS PATRICIA L","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2017-06-01T15:51:21.000Z","date":"2017-05-30","kind":"disposition_to_issuer","acquired":false,"shares":50231,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Pursuant to the Merger Agreement (defined below), each outstanding share of common stock of the Issuer (defined below) was converted into the right to receive $1.91 in cash plus 0.14864 shares of First Interstate Class A common stock.  First Interstate Class A common stock had a closing market value of $34.30 on the date of the merger."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0000899243-17-014979","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/865911/000089924317014979/doc4.xml","form_type":"4"}},{"id":4539846,"issuer":{"id":4030,"kind":"organization","name":"MDU RESOURCES GROUP INC"},"owners":[{"id":45167,"kind":"person","name":"MOSS PATRICIA L","position":1,"cik":"0001190817","reported_name":"MOSS PATRICIA L","relationship":{"director":true}}],"security":"Common Stock","published_at":"2016-11-30T17:16:33.000Z","date":"2016-11-29","kind":"sale","acquired":false,"shares":4050,"price":28.3,"value":114615.0,"ownership":{"direct":true},"balance_after":75418,"source":{"system":"sec-edgar","filing":"0001127602-16-068630","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/67716/000112760216068630/form4.xml","form_type":"4"}},{"id":4546509,"issuer":{"id":4030,"kind":"organization","name":"MDU RESOURCES GROUP INC"},"owners":[{"id":45167,"kind":"person","name":"MOSS PATRICIA L","position":1,"cik":"0001190817","reported_name":"MOSS PATRICIA L","relationship":{"director":true}}],"security":"Common Stock","published_at":"2016-11-22T19:32:37.000Z","date":"2016-11-21","kind":"grant","acquired":true,"shares":3886,"price":28.304,"value":109989.344,"ownership":{"direct":true},"balance_after":79468,"source":{"system":"sec-edgar","filing":"0001127602-16-068052","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/67716/000112760216068052/form4.xml","form_type":"4"}}]}