{"transactions":[{"id":753252,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":42027,"kind":"person","name":"HEYNEMAN JOHN M JR","position":1,"cik":"0001198518","reported_name":"HEYNEMAN JOHN M JR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2026-06-03T17:45:24.000Z","date":"2026-06-01","kind":"grant","planned":false,"acquired":true,"shares":2247,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares issuable upon vesting of restricted stock units granted to the reporting person pursuant to the Registrant's 2023 Equity and Incentive Plan. The restricted stock units vest on June 1, 2027, subject to the reporting person's provision of continuous service to the Registrant through the earlier of the applicable vesting date or the date of the Registrant's next annual shareholder meeting."}],"balance_after":7471,"source":{"system":"sec-edgar","filing":"0000860413-26-000055","document":"wk-form4_1780508721.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/860413/000086041326000055/wk-form4_1780508721.xml","form_type":"4"}},{"id":989337,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":42027,"kind":"person","name":"HEYNEMAN JOHN M JR","position":1,"cik":"0001198518","reported_name":"HEYNEMAN JOHN M JR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72614,"kind":"organization","name":"John M Heyneman Jr. Trust","position":2,"cik":"0001908848","reported_name":"John M Heyneman Jr. Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72615,"kind":"organization","name":"Rae Ann Morss & John Heyneman Jr., Trustees FBO Rae Ann Morss Exemption Trust Under the Scott Family 1996 Trust","position":3,"cik":"0001908849","reported_name":"Rae Ann Morss & John Heyneman Jr., Trustees FBO Rae Ann Morss Exemption Trust Under the Scott Family 1996 Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72616,"kind":"organization","name":"Riki Rae Scott Davidson & John Heyneman Jr., Trustees FBO Riki Scott Davidson Exemption Trust Under the Scott Family 1996 Trust","position":4,"cik":"0001908784","reported_name":"Riki Rae Scott Davidson & John Heyneman Jr., Trustees FBO Riki Scott Davidson Exemption Trust Under the Scott Family 1996 Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72617,"kind":"organization","name":"Towanda Investments Limited Partnership","position":5,"cik":"0001908810","reported_name":"Towanda Investments Limited Partnership","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2025-11-25T17:29:24.000Z","date":"2025-11-21","kind":"sale","planned":false,"acquired":false,"shares":30432,"price":31.03,"value":944304.96,"ownership":{"direct":false,"nature":"see footnote"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"As a result of certain agreements entered into by and among the reporting persons, the Issuer, and certain other stockholders of the Issuer, the reporting persons may be deemed members of a group with the other signatories thereto and may be deemed to share beneficial ownership of the securities reported herein. Each of the reporting persons disclaims beneficial ownership of any such securities, except to the extent of its pecuniary interest therein. The reporting persons expect to file future Forms 4 and 5, if any, together with John Heyneman, Jr. with the indication of direct or indirect ownership in Table I being made from John Heyneman, Jr.'s perspective. The nature of beneficial ownership is described in detail by footnote for all reporting persons."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Composed of 150,000 shares held of record by John M Heyneman Jr. Trust, 85,836 shares held of record by Riki Rae Scott Davidson & John Heyneman Jr., Trustees FBO Riki Scott Davidson Exemption Trust Under the Scott Family 1996 Trust, 85,836 shares held of record by Rae Ann Morss & John Heyneman Jr., Trustees FBO Rae Ann Morss Exemption Trust Under the Scott Family 1996 Trust, 1,085,792 shares held of record by Towanda Investments Limited Partnership, 4,552 shares held of record by John Heyneman, Jr.'s spouse, 1095 shares held of record by John Heyneman, Jr.'s daughter, 1,215 shares held of record by John Heyneman, Jr.'s son Quinn, and 310 shares held of record by John Heyneman, Jr.'s son Bae-John."}],"balance_after":1414636,"source":{"system":"sec-edgar","filing":"0001198518-25-000009","document":"wk-form4_1764091760.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/860413/000119851825000009/wk-form4_1764091760.xml","form_type":"4"}},{"id":1003021,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":42027,"kind":"person","name":"HEYNEMAN JOHN M JR","position":1,"cik":"0001198518","reported_name":"HEYNEMAN JOHN M JR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2025-11-12T21:46:11.000Z","date":"2025-11-11","kind":"sale","planned":false,"acquired":false,"shares":15000,"price":32.14,"value":482100.0,"ownership":{"direct":false,"nature":"By Bench Ranch LLC"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"As a result of certain agreements entered into by and among the reporting persons, the Issuer, and certain other stockholders of the Issuer, the reporting persons may be deemed members of a group with the other signatories thereto and may be deemed to share beneficial ownership of the securities reported herein. Each of the reporting persons disclaims beneficial ownership of any such securities, except to the extent of its pecuniary interest therein. The reporting persons expect to file future Forms 4 and 5, if any, together with John Heyneman, Jr. with the indication of direct or indirect ownership in Table I being made from John Heyneman, Jr.'s perspective. The nature of beneficial ownership is described in detail by footnote for all reporting persons."}],"balance_after":30154,"source":{"system":"sec-edgar","filing":"0001198518-25-000004","document":"wk-form4_1762983968.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/860413/000119851825000004/wk-form4_1762983968.xml","form_type":"4"}},{"id":1003020,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":42027,"kind":"person","name":"HEYNEMAN JOHN M JR","position":1,"cik":"0001198518","reported_name":"HEYNEMAN JOHN M JR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2025-11-12T21:46:11.000Z","date":"2025-11-10","kind":"sale","planned":false,"acquired":false,"shares":20000,"price":32.06,"value":641200.0,"ownership":{"direct":false,"nature":"By Awe' LLC"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"As a result of certain agreements entered into by and among the reporting persons, the Issuer, and certain other stockholders of the Issuer, the reporting persons may be deemed members of a group with the other signatories thereto and may be deemed to share beneficial ownership of the securities reported herein. Each of the reporting persons disclaims beneficial ownership of any such securities, except to the extent of its pecuniary interest therein. The reporting persons expect to file future Forms 4 and 5, if any, together with John Heyneman, Jr. with the indication of direct or indirect ownership in Table I being made from John Heyneman, Jr.'s perspective. The nature of beneficial ownership is described in detail by footnote for all reporting persons."}],"balance_after":47482,"source":{"system":"sec-edgar","filing":"0001198518-25-000004","document":"wk-form4_1762983968.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/860413/000119851825000004/wk-form4_1762983968.xml","form_type":"4"}},{"id":1003019,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":42027,"kind":"person","name":"HEYNEMAN JOHN M JR","position":1,"cik":"0001198518","reported_name":"HEYNEMAN JOHN M JR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2025-11-12T21:46:11.000Z","date":"2025-09-17","kind":"other","planned":false,"acquired":true,"shares":67482,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"By Awe' LLC"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"As a result of certain agreements entered into by and among the reporting persons, the Issuer, and certain other stockholders of the Issuer, the reporting persons may be deemed members of a group with the other signatories thereto and may be deemed to share beneficial ownership of the securities reported herein. Each of the reporting persons disclaims beneficial ownership of any such securities, except to the extent of its pecuniary interest therein. The reporting persons expect to file future Forms 4 and 5, if any, together with John Heyneman, Jr. with the indication of direct or indirect ownership in Table I being made from John Heyneman, Jr.'s perspective. The nature of beneficial ownership is described in detail by footnote for all reporting persons."}],"balance_after":67482,"source":{"system":"sec-edgar","filing":"0001198518-25-000004","document":"wk-form4_1762983968.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/860413/000119851825000004/wk-form4_1762983968.xml","form_type":"4"}},{"id":1003018,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":42027,"kind":"person","name":"HEYNEMAN JOHN M JR","position":1,"cik":"0001198518","reported_name":"HEYNEMAN JOHN M JR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2025-11-12T21:46:11.000Z","date":"2025-09-10","kind":"other","planned":false,"acquired":true,"shares":45154,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"By Bench Ranch LLC"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"As a result of certain agreements entered into by and among the reporting persons, the Issuer, and certain other stockholders of the Issuer, the reporting persons may be deemed members of a group with the other signatories thereto and may be deemed to share beneficial ownership of the securities reported herein. Each of the reporting persons disclaims beneficial ownership of any such securities, except to the extent of its pecuniary interest therein. The reporting persons expect to file future Forms 4 and 5, if any, together with John Heyneman, Jr. with the indication of direct or indirect ownership in Table I being made from John Heyneman, Jr.'s perspective. The nature of beneficial ownership is described in detail by footnote for all reporting persons."}],"balance_after":45154,"source":{"system":"sec-edgar","filing":"0001198518-25-000004","document":"wk-form4_1762983968.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/860413/000119851825000004/wk-form4_1762983968.xml","form_type":"4"}},{"id":1003017,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":42027,"kind":"person","name":"HEYNEMAN JOHN M JR","position":1,"cik":"0001198518","reported_name":"HEYNEMAN JOHN M JR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2025-11-12T21:46:11.000Z","date":"2025-09-09","kind":"other","planned":false,"acquired":true,"shares":30432,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"see footnote"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"As a result of certain agreements entered into by and among the reporting persons, the Issuer, and certain other stockholders of the Issuer, the reporting persons may be deemed members of a group with the other signatories thereto and may be deemed to share beneficial ownership of the securities reported herein. Each of the reporting persons disclaims beneficial ownership of any such securities, except to the extent of its pecuniary interest therein. The reporting persons expect to file future Forms 4 and 5, if any, together with John Heyneman, Jr. with the indication of direct or indirect ownership in Table I being made from John Heyneman, Jr.'s perspective. The nature of beneficial ownership is described in detail by footnote for all reporting persons."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Composed of 180,432 shares held of record by John M Heyneman Jr. Trust, 85,836 shares held of record by Riki Rae Scott Davidson & John Heyneman Jr., Trustees FBO Riki Scott Davidson Exemption Trust Under the Scott Family 1996 Trust, 85,836 shares held of record by Rae Ann Morss & John Heyneman Jr., Trustees FBO Rae Ann Morss Exemption Trust Under the Scott Family 1996 Trust, 1,085,792 shares held of record by Towanda Investments Limited Partnership, 4,552 shares held of record by John Heyneman, Jr.'s spouse, 1,095 shares held of record by John Heyneman, Jr.'s daughter, 1,215 shares held of record by John Heyneman, Jr.'s son Quinn, and 310 shares held of record by John Heyneman, Jr.'s son Bae-John."}],"balance_after":1445068,"source":{"system":"sec-edgar","filing":"0001198518-25-000004","document":"wk-form4_1762983968.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/860413/000119851825000004/wk-form4_1762983968.xml","form_type":"4"}},{"id":1064633,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":42027,"kind":"person","name":"HEYNEMAN JOHN M JR","position":1,"cik":"0001198518","reported_name":"HEYNEMAN JOHN M JR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72614,"kind":"organization","name":"John M Heyneman Jr. Trust","position":2,"cik":"0001908848","reported_name":"John M Heyneman Jr. Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72615,"kind":"organization","name":"Rae Ann Morss & John Heyneman Jr., Trustees FBO Rae Ann Morss Exemption Trust Under the Scott Family 1996 Trust","position":3,"cik":"0001908849","reported_name":"Rae Ann Morss & John Heyneman Jr., Trustees FBO Rae Ann Morss Exemption Trust Under the Scott Family 1996 Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72616,"kind":"organization","name":"Riki Rae Scott Davidson & John Heyneman Jr., Trustees FBO Riki Scott Davidson Exemption Trust Under the Scott Family 1996 Trust","position":4,"cik":"0001908784","reported_name":"Riki Rae Scott Davidson & John Heyneman Jr., Trustees FBO Riki Scott Davidson Exemption Trust Under the Scott Family 1996 Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72617,"kind":"organization","name":"Towanda Investments Limited Partnership","position":5,"cik":"0001908810","reported_name":"Towanda Investments Limited Partnership","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2025-08-18T22:07:15.000Z","date":"2025-08-14","kind":"sale","planned":false,"acquired":false,"shares":11818,"price":30.185,"value":356726.33,"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 sold in multiple transactions at prices ranging from $30.07 to $30.23.  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":5224,"source":{"system":"sec-edgar","filing":"0000860413-25-000125","document":"wk-form4_1755554830.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000125/wk-form4_1755554830.xml","form_type":"4"}},{"id":1126427,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":42027,"kind":"person","name":"HEYNEMAN JOHN M JR","position":1,"cik":"0001198518","reported_name":"HEYNEMAN JOHN M JR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72614,"kind":"organization","name":"John M Heyneman Jr. Trust","position":2,"cik":"0001908848","reported_name":"John M Heyneman Jr. Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72615,"kind":"organization","name":"Rae Ann Morss & John Heyneman Jr., Trustees FBO Rae Ann Morss Exemption Trust Under the Scott Family 1996 Trust","position":3,"cik":"0001908849","reported_name":"Rae Ann Morss & John Heyneman Jr., Trustees FBO Rae Ann Morss Exemption Trust Under the Scott Family 1996 Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72616,"kind":"organization","name":"Riki Rae Scott Davidson & John Heyneman Jr., Trustees FBO Riki Scott Davidson Exemption Trust Under the Scott Family 1996 Trust","position":4,"cik":"0001908784","reported_name":"Riki Rae Scott Davidson & John Heyneman Jr., Trustees FBO Riki Scott Davidson Exemption Trust Under the Scott Family 1996 Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72617,"kind":"organization","name":"Towanda Investments Limited Partnership","position":5,"cik":"0001908810","reported_name":"Towanda Investments Limited Partnership","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2025-06-03T18:56:20.000Z","date":"2025-06-01","kind":"grant","planned":false,"acquired":true,"shares":2946,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares issuable upon vesting of restricted stock units granted to the reporting person pursuant to the Registrant's 2023 Equity and Incentive Plan. The restricted stock units vest on June 1, 2026, subject to the reporting person's provision of continuous service to the Registrant through the earlier of the applicable vesting date or the date of the Registrant's [next] annual stockholder meeting."}],"balance_after":17042,"source":{"system":"sec-edgar","filing":"0000860413-25-000098","document":"wk-form4_1748976973.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000098/wk-form4_1748976973.xml","form_type":"4"}},{"id":1244388,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":42027,"kind":"person","name":"HEYNEMAN JOHN M JR","position":1,"cik":"0001198518","reported_name":"HEYNEMAN JOHN M JR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72614,"kind":"organization","name":"John M Heyneman Jr. Trust","position":2,"cik":"0001908848","reported_name":"John M Heyneman Jr. Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72615,"kind":"organization","name":"Rae Ann Morss & John Heyneman Jr., Trustees FBO Rae Ann Morss Exemption Trust Under the Scott Family 1996 Trust","position":3,"cik":"0001908849","reported_name":"Rae Ann Morss & John Heyneman Jr., Trustees FBO Rae Ann Morss Exemption Trust Under the Scott Family 1996 Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72616,"kind":"organization","name":"Riki Rae Scott Davidson & John Heyneman Jr., Trustees FBO Riki Scott Davidson Exemption Trust Under the Scott Family 1996 Trust","position":4,"cik":"0001908784","reported_name":"Riki Rae Scott Davidson & John Heyneman Jr., Trustees FBO Riki Scott Davidson Exemption Trust Under the Scott Family 1996 Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72617,"kind":"organization","name":"Towanda Investments Limited Partnership","position":5,"cik":"0001908810","reported_name":"Towanda Investments Limited Partnership","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2025-02-26T23:54:04.000Z","date":"2025-02-26","kind":"sale","planned":false,"acquired":false,"shares":250,"price":30.52,"value":7630.0,"ownership":{"direct":false,"nature":"see footnote"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"As a result of certain agreements entered into by and among the reporting persons, the Issuer, and certain other stockholders of the Issuer, the reporting persons may be deemed members of a group with the other signatories thereto and may be deemed to share beneficial ownership of the securities reported herein. Each of the reporting persons disclaims beneficial ownership of any such securities, except to the extent of its pecuniary interest therein. The reporting persons expect to file future Forms 4 and 5, if any, together with John Heyneman, Jr. with the indication of direct or indirect ownership in Table I being made from John Heyneman, Jr.'s perspective. The nature of beneficial ownership is described in detail by footnote for all reporting persons."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Composed of 150,000 shares held of record by John M Heyneman Jr. Trust, 85,836 shares held of record by Riki Rae Scott Davidson & John Heyneman Jr., Trustees FBO Riki Scott Davidson Exemption Trust Under the Scott Family 1996 Trust, 85,836 shares held of record by Rae Ann Morss & John Heyneman Jr., Trustees FBO Rae Ann Morss Exemption Trust Under the Scott Family 1996 Trust, 1,085,792 shares held of record by Towanda Investments Limited Partnership, 4,552 shares held of record by John Heyneman, Jr.'s spouse, 1095 shares held of record by John Heyneman, Jr.'s daughter, 1,215 shares held of record by John Heyneman, Jr.'s son Quinn, and 310 shares held of record by John Heyneman, Jr.'s son Bae-John."}],"balance_after":1414636,"source":{"system":"sec-edgar","filing":"0000860413-25-000019","document":"wk-form4_1740614037.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000019/wk-form4_1740614037.xml","form_type":"4"}},{"id":1265419,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":42027,"kind":"person","name":"HEYNEMAN JOHN M JR","position":1,"cik":"0001198518","reported_name":"HEYNEMAN JOHN M JR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72614,"kind":"organization","name":"John M Heyneman Jr. Trust","position":2,"cik":"0001908848","reported_name":"John M Heyneman Jr. Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72615,"kind":"organization","name":"Rae Ann Morss & John Heyneman Jr., Trustees FBO Rae Ann Morss Exemption Trust Under the Scott Family 1996 Trust","position":3,"cik":"0001908849","reported_name":"Rae Ann Morss & John Heyneman Jr., Trustees FBO Rae Ann Morss Exemption Trust Under the Scott Family 1996 Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72616,"kind":"organization","name":"Riki Rae Scott Davidson & John Heyneman Jr., Trustees FBO Riki Scott Davidson Exemption Trust Under the Scott Family 1996 Trust","position":4,"cik":"0001908784","reported_name":"Riki Rae Scott Davidson & John Heyneman Jr., Trustees FBO Riki Scott Davidson Exemption Trust Under the Scott Family 1996 Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72617,"kind":"organization","name":"Towanda Investments Limited Partnership","position":5,"cik":"0001908810","reported_name":"Towanda Investments Limited Partnership","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2025-02-18T23:58:32.000Z","date":"2025-02-14","kind":"sale","planned":false,"acquired":false,"shares":1335,"price":32.56,"value":43467.6,"ownership":{"direct":false,"nature":"see footnote"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"As a result of certain agreements entered into by and among the reporting persons, the Issuer, and certain other stockholders of the Issuer, the reporting persons may be deemed members of a group with the other signatories thereto and may be deemed to share beneficial ownership of the securities reported herein. Each of the reporting persons disclaims beneficial ownership of any such securities, except to the extent of its pecuniary interest therein. The reporting persons expect to file future Forms 4 and 5, if any, together with John Heyneman, Jr. with the indication of direct or indirect ownership in Table I being made from John Heyneman, Jr.'s perspective. The nature of beneficial ownership is described in detail by footnote for all reporting persons."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Composed of 150,000 shares held of record by John M Heyneman Jr. Trust, 85,836 shares held of record by Riki Rae Scott Davidson & John Heyneman Jr., Trustees FBO Riki Scott Davidson Exemption Trust Under the Scott Family 1996 Trust, 85,836 shares held of record by Rae Ann Morss & John Heyneman Jr., Trustees FBO Rae Ann Morss Exemption Trust Under the Scott Family 1996 Trust, 1,085,792 shares held of record by Towanda Investments Limited Partnership, 4,552 shares held of record by John Heyneman, Jr.'s spouse, 1095 shares held of record by John Heyneman, Jr.'s daughter, 1,465 shares held of record by John Heyneman, Jr.'s son Quinn, and 310 shares held of record by John Heyneman, Jr.'s son Bae-John."}],"balance_after":1414886,"source":{"system":"sec-edgar","filing":"0000860413-25-000012","document":"wk-form4_1739923106.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000012/wk-form4_1739923106.xml","form_type":"4"}},{"id":1277600,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":42027,"kind":"person","name":"HEYNEMAN JOHN M JR","position":1,"cik":"0001198518","reported_name":"HEYNEMAN JOHN M JR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72614,"kind":"organization","name":"John M Heyneman Jr. Trust","position":2,"cik":"0001908848","reported_name":"John M Heyneman Jr. Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72615,"kind":"organization","name":"Rae Ann Morss & John Heyneman Jr., Trustees FBO Rae Ann Morss Exemption Trust Under the Scott Family 1996 Trust","position":3,"cik":"0001908849","reported_name":"Rae Ann Morss & John Heyneman Jr., Trustees FBO Rae Ann Morss Exemption Trust Under the Scott Family 1996 Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72616,"kind":"organization","name":"Riki Rae Scott Davidson & John Heyneman Jr., Trustees FBO Riki Scott Davidson Exemption Trust Under the Scott Family 1996 Trust","position":4,"cik":"0001908784","reported_name":"Riki Rae Scott Davidson & John Heyneman Jr., Trustees FBO Riki Scott Davidson Exemption Trust Under the Scott Family 1996 Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72617,"kind":"organization","name":"Towanda Investments Limited Partnership","position":5,"cik":"0001908810","reported_name":"Towanda Investments Limited Partnership","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2025-02-10T18:22:45.000Z","date":"2025-02-06","kind":"gift","planned":false,"acquired":true,"shares":1070,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"see footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Shares disposed of by John M Heyneman Jr. to John M. Heyneman Jr.'s son, and shares acquired by John M. Heynman Jr.'s son as a bona fide gift."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"As a result of certain agreements entered into by and among the reporting persons, the Issuer, and certain other stockholders of the Issuer, the reporting persons may be deemed members of a group with the other signatories thereto and may be deemed to share beneficial ownership of the securities reported herein. Each of the reporting persons disclaims beneficial ownership of any such securities, except to the extent of its pecuniary interest therein. The reporting persons expect to file future Forms 4 and 5, if any, together with John Heyneman, Jr. with the indication of direct or indirect ownership in Table I being made from John Heyneman, Jr.'s perspective. The nature of beneficial ownership is described in detail by footnote for all reporting persons."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Composed of 150,000 shares held of record by John M Heyneman Jr. Trust, 85,836 shares held of record by Riki Rae Scott Davidson & John Heyneman Jr., Trustees FBO Riki Scott Davidson Exemption Trust Under the Scott Family 1996 Trust, 85,836 shares held of record by Rae Ann Morss & John Heyneman Jr., Trustees FBO Rae Ann Morss Exemption Trust Under the Scott Family 1996 Trust, 1,085,792 shares held of record by Towanda Investments Limited Partnership, 4,552 shares held of record by John Heyneman, Jr.'s spouse, 1,095 shares held of record by John Heyneman, Jr.'s daughter, 1,465 shares held of record by John Heyneman, Jr.'s son Quinn, and 1,645 shares held of record by John Heyneman, Jr.'s son Bae-John."}],"balance_after":1416221,"source":{"system":"sec-edgar","filing":"0000860413-25-000008","document":"wk-form4_1739211758.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000008/wk-form4_1739211758.xml","form_type":"4"}},{"id":1277599,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":42027,"kind":"person","name":"HEYNEMAN JOHN M JR","position":1,"cik":"0001198518","reported_name":"HEYNEMAN JOHN M JR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72614,"kind":"organization","name":"John M Heyneman Jr. Trust","position":2,"cik":"0001908848","reported_name":"John M Heyneman Jr. Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72615,"kind":"organization","name":"Rae Ann Morss & John Heyneman Jr., Trustees FBO Rae Ann Morss Exemption Trust Under the Scott Family 1996 Trust","position":3,"cik":"0001908849","reported_name":"Rae Ann Morss & John Heyneman Jr., Trustees FBO Rae Ann Morss Exemption Trust Under the Scott Family 1996 Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72616,"kind":"organization","name":"Riki Rae Scott Davidson & John Heyneman Jr., Trustees FBO Riki Scott Davidson Exemption Trust Under the Scott Family 1996 Trust","position":4,"cik":"0001908784","reported_name":"Riki Rae Scott Davidson & John Heyneman Jr., Trustees FBO Riki Scott Davidson Exemption Trust Under the Scott Family 1996 Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72617,"kind":"organization","name":"Towanda Investments Limited Partnership","position":5,"cik":"0001908810","reported_name":"Towanda Investments Limited Partnership","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2025-02-10T18:22:45.000Z","date":"2025-02-06","kind":"gift","planned":false,"acquired":false,"shares":1070,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Shares disposed of by John M Heyneman Jr. to John M. Heyneman Jr.'s son, and shares acquired by John M. Heynman Jr.'s son as a bona fide gift."}],"balance_after":14096,"source":{"system":"sec-edgar","filing":"0000860413-25-000008","document":"wk-form4_1739211758.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/860413/000086041325000008/wk-form4_1739211758.xml","form_type":"4"}},{"id":1422562,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":42027,"kind":"person","name":"HEYNEMAN JOHN M JR","position":1,"cik":"0001198518","reported_name":"HEYNEMAN JOHN M JR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72615,"kind":"organization","name":"Rae Ann Morss & John Heyneman Jr., Trustees FBO Rae Ann Morss Exemption Trust Under the Scott Family 1996 Trust","position":2,"cik":"0001908849","reported_name":"Rae Ann Morss & John Heyneman Jr., Trustees FBO Rae Ann Morss Exemption Trust Under the Scott Family 1996 Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72616,"kind":"organization","name":"Riki Rae Scott Davidson & John Heyneman Jr., Trustees FBO Riki Scott Davidson Exemption Trust Under the Scott Family 1996 Trust","position":3,"cik":"0001908784","reported_name":"Riki Rae Scott Davidson & John Heyneman Jr., Trustees FBO Riki Scott Davidson Exemption Trust Under the Scott Family 1996 Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72617,"kind":"organization","name":"Towanda Investments Limited Partnership","position":4,"cik":"0001908810","reported_name":"Towanda Investments Limited Partnership","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72614,"kind":"organization","name":"John M Heyneman Jr. Trust","position":5,"cik":"0001908848","reported_name":"John M Heyneman Jr. Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2024-08-27T20:56:37.000Z","date":"2024-08-23","kind":"sale","planned":false,"acquired":false,"shares":550,"price":30.59,"value":16824.5,"ownership":{"direct":false,"nature":"see footnote"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"As a result of certain agreements entered into by and among the reporting persons, the Issuer, and certain other stockholders of the Issuer, the reporting persons may be deemed members of a group with the other signatories thereto and may be deemed to share beneficial ownership of the securities reported herein. Each of the reporting persons disclaims beneficial ownership of any such securities, except to the extent of its pecuniary interest therein. The reporting persons expect to file future Forms 4 and 5, if any, together with John Heyneman, Jr. with the indication of direct or indirect ownership in Table I being made from John Heyneman, Jr.'s perspective. The nature of beneficial ownership is described in detail by footnote for all reporting persons."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Composed of 150,000 shares held of record by John M Heyneman Jr. Trust; 85,836 shares held of record by Riki Rae Scott Davidson & John Heyneman Jr., Trustees FBO Riki Scott Davidson Exemption Trust Under the Scott Family 1996 Trust; 85,836 shares held of record by Rae Ann Morss & John Heyneman Jr., Trustees FBO Rae Ann Morss Exemption Trust Under the Scott Family 1996 Trust; 1,085,792 shares held of record by Towanda Investments Limited Partnership; 4552 shares held of record by John Heyneman, Jr.'s spouse; 1095 shares held of record by John Heyneman, Jr.'s daughter; 1,465 shares held of record by John Heyneman, Jr.'s son Quinn; and 575 shares held of record by John Heyneman, Jr.'s son Bae-John."}],"balance_after":1415151,"source":{"system":"sec-edgar","filing":"0000860413-24-000122","document":"wk-form4_1724792190.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/860413/000086041324000122/wk-form4_1724792190.xml","form_type":"4"}},{"id":1444732,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":42027,"kind":"person","name":"HEYNEMAN JOHN M JR","position":1,"cik":"0001198518","reported_name":"HEYNEMAN JOHN M JR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72615,"kind":"organization","name":"Rae Ann Morss & John Heyneman Jr., Trustees FBO Rae Ann Morss Exemption Trust Under the Scott Family 1996 Trust","position":2,"cik":"0001908849","reported_name":"Rae Ann Morss & John Heyneman Jr., Trustees FBO Rae Ann Morss Exemption Trust Under the Scott Family 1996 Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72616,"kind":"organization","name":"Riki Rae Scott Davidson & John Heyneman Jr., Trustees FBO Riki Scott Davidson Exemption Trust Under the Scott Family 1996 Trust","position":3,"cik":"0001908784","reported_name":"Riki Rae Scott Davidson & John Heyneman Jr., Trustees FBO Riki Scott Davidson Exemption Trust Under the Scott Family 1996 Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72617,"kind":"organization","name":"Towanda Investments Limited Partnership","position":4,"cik":"0001908810","reported_name":"Towanda Investments Limited Partnership","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72614,"kind":"organization","name":"John M Heyneman Jr. Trust","position":5,"cik":"0001908848","reported_name":"John M Heyneman Jr. Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2024-08-01T22:45:16.000Z","date":"2024-07-31","kind":"gift","planned":false,"acquired":true,"shares":2300,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"see footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction involved a gift of 575 shares to reporting person's spouse and gifts of 575 shares to each of the reporting person's three children that share a household with the reporting person."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"As a result of certain agreements entered into by and among the reporting persons, the Issuer, and certain other stockholders of the Issuer, the reporting persons may be deemed members of a group with the other signatories thereto and may be deemed to share beneficial ownership of the securities reported herein. Each of the reporting persons disclaims beneficial ownership of any such securities, except to the extent of its pecuniary interest therein. The reporting persons expect to file future Forms 4 and 5, if any, together with John Heyneman, Jr. with the indication of direct or indirect ownership in Table I being made from John Heyneman, Jr.'s perspective. The nature of beneficial ownership is described in detail by footnote for all reporting persons."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Composed of 150,000 shares held of record by John M Heyneman, Jr. Trust, 85,836 shares held of record by Riki Rae Scott Davidson & John Heyneman Jr., Trustees FBO Riki Scott Davidson Exemption Trust Under the Scott Family 1996 Trust, 85,836 shares held of record by Rae Ann Morss & John Heyneman Jr., Trustees FBO Rae Ann Morss Exemption Trust Under the Scott Family 1996 Trust, 1,085,792 shares held of record by Towanda Investments Limited Partnership, 4,552 shares held of record by John Heyneman, Jr.'s spouse, 1,645 shares held of record by John Heyneman, Jr.'s daughter. 1,465 shares held of record by John Heyneman, Jr.'s son Quinn, and 575 shares held of record by John Heyneman, Jr.'s son Bae-John ."}],"balance_after":1415701,"source":{"system":"sec-edgar","filing":"0000860413-24-000116","document":"wk-form4_1722552308.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/860413/000086041324000116/wk-form4_1722552308.xml","form_type":"4"}},{"id":1444731,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":42027,"kind":"person","name":"HEYNEMAN JOHN M JR","position":1,"cik":"0001198518","reported_name":"HEYNEMAN JOHN M JR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72615,"kind":"organization","name":"Rae Ann Morss & John Heyneman Jr., Trustees FBO Rae Ann Morss Exemption Trust Under the Scott Family 1996 Trust","position":2,"cik":"0001908849","reported_name":"Rae Ann Morss & John Heyneman Jr., Trustees FBO Rae Ann Morss Exemption Trust Under the Scott Family 1996 Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72616,"kind":"organization","name":"Riki Rae Scott Davidson & John Heyneman Jr., Trustees FBO Riki Scott Davidson Exemption Trust Under the Scott Family 1996 Trust","position":3,"cik":"0001908784","reported_name":"Riki Rae Scott Davidson & John Heyneman Jr., Trustees FBO Riki Scott Davidson Exemption Trust Under the Scott Family 1996 Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72617,"kind":"organization","name":"Towanda Investments Limited Partnership","position":4,"cik":"0001908810","reported_name":"Towanda Investments Limited Partnership","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72614,"kind":"organization","name":"John M Heyneman Jr. Trust","position":5,"cik":"0001908848","reported_name":"John M Heyneman Jr. Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2024-08-01T22:45:16.000Z","date":"2024-07-31","kind":"gift","planned":false,"acquired":false,"shares":2300,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction involved a gift of 575 shares to reporting person's spouse and gifts of 575 shares to each of the reporting person's three children that share a household with the reporting person."}],"balance_after":15166,"source":{"system":"sec-edgar","filing":"0000860413-24-000116","document":"wk-form4_1722552308.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/860413/000086041324000116/wk-form4_1722552308.xml","form_type":"4"}},{"id":1493747,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":42027,"kind":"person","name":"HEYNEMAN JOHN M JR","position":1,"cik":"0001198518","reported_name":"HEYNEMAN JOHN M JR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72614,"kind":"organization","name":"John M Heyneman Jr. Trust","position":2,"cik":"0001908848","reported_name":"John M Heyneman Jr. Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72615,"kind":"organization","name":"Rae Ann Morss & John Heyneman Jr., Trustees FBO Rae Ann Morss Exemption Trust Under the Scott Family 1996 Trust","position":3,"cik":"0001908849","reported_name":"Rae Ann Morss & John Heyneman Jr., Trustees FBO Rae Ann Morss Exemption Trust Under the Scott Family 1996 Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72617,"kind":"organization","name":"Towanda Investments Limited Partnership","position":4,"cik":"0001908810","reported_name":"Towanda Investments Limited Partnership","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72616,"kind":"organization","name":"Riki Rae Scott Davidson & John Heyneman Jr., Trustees FBO Riki Scott Davidson Exemption Trust Under the Scott Family 1996 Trust","position":5,"cik":"0001908784","reported_name":"Riki Rae Scott Davidson & John Heyneman Jr., Trustees FBO Riki Scott Davidson Exemption Trust Under the Scott Family 1996 Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2024-06-04T22:05:56.000Z","date":"2024-06-01","kind":"grant","planned":false,"acquired":true,"shares":3014,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares issuable upon vesting of restricted stock units granted to the reporting person pursuant to the Registrant's 2023 Equity and Incentive Plan. The restricted stock units vest on June 1, 2025, subject to the reporting persons provision of continuous service to the Registrant through the vesting date."}],"balance_after":17466,"source":{"system":"sec-edgar","filing":"0000860413-24-000100","document":"wk-form4_1717538747.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/860413/000086041324000100/wk-form4_1717538747.xml","form_type":"4"}},{"id":1868254,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":42027,"kind":"person","name":"HEYNEMAN JOHN M JR","position":1,"cik":"0001198518","reported_name":"HEYNEMAN JOHN M JR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72614,"kind":"organization","name":"John M Heyneman Jr. Trust","position":2,"cik":"0001908848","reported_name":"John M Heyneman Jr. Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72615,"kind":"organization","name":"Rae Ann Morss & John Heyneman Jr., Trustees FBO Rae Ann Morss Exemption Trust Under the Scott Family 1996 Trust","position":3,"cik":"0001908849","reported_name":"Rae Ann Morss & John Heyneman Jr., Trustees FBO Rae Ann Morss Exemption Trust Under the Scott Family 1996 Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72616,"kind":"organization","name":"Riki Rae Scott Davidson & John Heyneman Jr., Trustees FBO Riki Scott Davidson Exemption Trust Under the Scott Family 1996 Trust","position":4,"cik":"0001908784","reported_name":"Riki Rae Scott Davidson & John Heyneman Jr., Trustees FBO Riki Scott Davidson Exemption Trust Under the Scott Family 1996 Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72617,"kind":"organization","name":"Towanda Investments Limited Partnership","position":5,"cik":"0001908810","reported_name":"Towanda Investments Limited Partnership","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2023-06-05T16:44:53.000Z","date":"2023-06-01","kind":"grant","planned":false,"acquired":true,"shares":3401,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares issuable upon vesting of restricted stock units granted to the reporting person pursuant to the Registrant's 2023 Equity and Incentive Plan. The restricted stock units vest on June 1, 2024, subject to the reporting persons provision of continuous service to the Registrant through the vesting date."}],"balance_after":24531,"source":{"system":"sec-edgar","filing":"0000860413-23-000144","document":"wf-form4_168598347932825.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/860413/000086041323000144/wf-form4_168598347932825.xml","form_type":"4"}},{"id":2196565,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":42027,"kind":"person","name":"HEYNEMAN JOHN M JR","position":1,"cik":"0001198518","reported_name":"HEYNEMAN JOHN M JR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72614,"kind":"organization","name":"John M Heyneman Jr. Trust","position":2,"cik":"0001908848","reported_name":"John M Heyneman Jr. Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72615,"kind":"organization","name":"Rae Ann Morss & John Heyneman Jr., Trustees FBO Rae Ann Morss Exemption Trust Under the Scott Family 1996 Trust","position":3,"cik":"0001908849","reported_name":"Rae Ann Morss & John Heyneman Jr., Trustees FBO Rae Ann Morss Exemption Trust Under the Scott Family 1996 Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72616,"kind":"organization","name":"Riki Rae Scott Davidson & John Heyneman Jr., Trustees FBO Riki Scott Davidson Exemption Trust Under the Scott Family 1996 Trust","position":4,"cik":"0001908784","reported_name":"Riki Rae Scott Davidson & John Heyneman Jr., Trustees FBO Riki Scott Davidson Exemption Trust Under the Scott Family 1996 Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72617,"kind":"organization","name":"Towanda Investments Limited Partnership","position":5,"cik":"0001908810","reported_name":"Towanda Investments Limited Partnership","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2022-08-03T22:03:35.000Z","date":"2022-08-03","kind":"sale","acquired":false,"shares":1000,"price":40.71,"value":40710.0,"ownership":{"direct":true},"balance_after":21130,"source":{"system":"sec-edgar","filing":"0001125727-22-000012","document":"wf-form4_165956419899967.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/860413/000112572722000012/wf-form4_165956419899967.xml","form_type":"4"}},{"id":2248317,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":42027,"kind":"person","name":"HEYNEMAN JOHN M JR","position":1,"cik":"0001198518","reported_name":"HEYNEMAN JOHN M JR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72614,"kind":"organization","name":"John M Heyneman Jr. Trust","position":2,"cik":"0001908848","reported_name":"John M Heyneman Jr. Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72615,"kind":"organization","name":"Rae Ann Morss & John Heyneman Jr., Trustees FBO Rae Ann Morss Exemption Trust Under the Scott Family 1996 Trust","position":3,"cik":"0001908849","reported_name":"Rae Ann Morss & John Heyneman Jr., Trustees FBO Rae Ann Morss Exemption Trust Under the Scott Family 1996 Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72616,"kind":"organization","name":"Riki Rae Scott Davidson & John Heyneman Jr., Trustees FBO Riki Scott Davidson Exemption Trust Under the Scott Family 1996 Trust","position":4,"cik":"0001908784","reported_name":"Riki Rae Scott Davidson & John Heyneman Jr., Trustees FBO Riki Scott Davidson Exemption Trust Under the Scott Family 1996 Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72617,"kind":"organization","name":"Towanda Investments Limited Partnership","position":5,"cik":"0001908810","reported_name":"Towanda Investments Limited Partnership","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2022-06-02T21:43:09.000Z","date":"2022-06-01","kind":"grant","acquired":true,"shares":1576,"price":38.07,"value":59998.32,"ownership":{"direct":true},"balance_after":22130,"source":{"system":"sec-edgar","filing":"0000860413-22-000177","document":"wf-form4_165420617092516.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/860413/000086041322000177/wf-form4_165420617092516.xml","form_type":"4"}},{"id":2315979,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":42027,"kind":"person","name":"HEYNEMAN JOHN M JR","position":1,"cik":"0001198518","reported_name":"HEYNEMAN JOHN M JR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72614,"kind":"organization","name":"John M Heyneman Jr. Trust","position":2,"cik":"0001908848","reported_name":"John M Heyneman Jr. Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72615,"kind":"organization","name":"Rae Ann Morss & John Heyneman Jr., Trustees FBO Rae Ann Morss Exemption Trust Under the Scott Family 1996 Trust","position":3,"cik":"0001908849","reported_name":"Rae Ann Morss & John Heyneman Jr., Trustees FBO Rae Ann Morss Exemption Trust Under the Scott Family 1996 Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72616,"kind":"organization","name":"Riki Rae Scott Davidson & John Heyneman Jr., Trustees FBO Riki Scott Davidson Exemption Trust Under the Scott Family 1996 Trust","position":4,"cik":"0001908784","reported_name":"Riki Rae Scott Davidson & John Heyneman Jr., Trustees FBO Riki Scott Davidson Exemption Trust Under the Scott Family 1996 Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72617,"kind":"organization","name":"Towanda Investments Limited Partnership","position":5,"cik":"0001908810","reported_name":"Towanda Investments Limited Partnership","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class B Common Stock","published_at":"2022-03-29T23:26:02.000Z","date":"2022-03-25","kind":"exercise","acquired":false,"shares":1400617,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"see footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Pursuant to the Issuer's amended and restated articles of incorporation, as amended, because the aggregate number of shares of Class B common stock constituted less than twenty percent (20%) of the aggregate number of shares of the Issuer's issued and outstanding common stock as of March 25, 2022, the record date of the Issuer's 2022 annual meeting of shareholders, each outstanding share of Class B common stock was automatically converted into one share of Class A common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Pursuant to the Issuer's amended and restated articles of incorporation, as amended, because the aggregate number of shares of Class B common stock constituted less than twenty percent (20%) of the aggregate number of shares of the Issuer's issued and outstanding common stock as of March 25, 2022, the record date of the Issuer's 2022 annual meeting of shareholders, each outstanding share of Class B common stock was automatically converted into one share of Class A common stock."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Pursuant to the Issuer's amended and restated articles of incorporation, as amended, because the aggregate number of shares of Class B common stock constituted less than twenty percent (20%) of the aggregate number of shares of the Issuer's issued and outstanding common stock as of March 25, 2022, the record date of the Issuer's 2022 annual meeting of shareholders, each outstanding share of Class B common stock was automatically converted into one share of Class A common stock."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F4","text":"Composed of 139,921 shares held of record by John M Heyneman Jr. Trust, 85,836 shares held of record by Riki Rae Scott Davidson & John Heyneman Jr., Trustees FBO Riki Scott Davidson Exemption Trust Under the Scott Family 1996 Trust, 85,836 shares held of record by Rae Ann Morss & John Heyneman Jr., Trustees FBO Rae Ann Morss Exemption Trust Under the Scott Family 1996 Trust, 1,085,792 shares held of record by Towanda Investments Limited Partnership, and 3,232 shares held of record by John Heyneman, Jr.'s spouse."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"As a result of certain agreements entered into by and among the reporting persons, the Issuer, and certain other stockholders of the Issuer, the reporting persons may be deemed members of a group with the other signatories thereto and may be deemed to share beneficial ownership of the securities reported herein. Each of the reporting persons disclaims beneficial ownership of any such securities, except to the extent of its pecuniary interest therein. The reporting persons expect to file future Forms 4 and 5, if any, together with John Heyneman, Jr. with the indication of direct or indirect ownership in Tables I and II being made from John Heyneman, Jr.'s perspective. The nature of beneficial ownership is described in detail by footnote for all reporting persons. (by see footnote)"},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Composed of 139,921 shares held of record by John M Heyneman Jr. Trust, 85,836 shares held of record by Riki Rae Scott Davidson & John Heyneman Jr., Trustees FBO Riki Scott Davidson Exemption Trust Under the Scott Family 1996 Trust, 85,836 shares held of record by Rae Ann Morss & John Heyneman Jr., Trustees FBO Rae Ann Morss Exemption Trust Under the Scott Family 1996 Trust, 1,085,792 shares held of record by Towanda Investments Limited Partnership, and 3,232 shares held of record by John Heyneman, Jr.'s spouse."}],"balance_after":0,"derivative":{"exercise_price":0,"underlying":"Class A Common Stock","underlying_shares":1400617},"source":{"system":"sec-edgar","filing":"0000860413-22-000121","document":"wf-form4_164859634378338.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/860413/000086041322000121/wf-form4_164859634378338.xml","form_type":"4"}},{"id":2315978,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":42027,"kind":"person","name":"HEYNEMAN JOHN M JR","position":1,"cik":"0001198518","reported_name":"HEYNEMAN JOHN M JR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72614,"kind":"organization","name":"John M Heyneman Jr. Trust","position":2,"cik":"0001908848","reported_name":"John M Heyneman Jr. Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72615,"kind":"organization","name":"Rae Ann Morss & John Heyneman Jr., Trustees FBO Rae Ann Morss Exemption Trust Under the Scott Family 1996 Trust","position":3,"cik":"0001908849","reported_name":"Rae Ann Morss & John Heyneman Jr., Trustees FBO Rae Ann Morss Exemption Trust Under the Scott Family 1996 Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72616,"kind":"organization","name":"Riki Rae Scott Davidson & John Heyneman Jr., Trustees FBO Riki Scott Davidson Exemption Trust Under the Scott Family 1996 Trust","position":4,"cik":"0001908784","reported_name":"Riki Rae Scott Davidson & John Heyneman Jr., Trustees FBO Riki Scott Davidson Exemption Trust Under the Scott Family 1996 Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72617,"kind":"organization","name":"Towanda Investments Limited Partnership","position":5,"cik":"0001908810","reported_name":"Towanda Investments Limited Partnership","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class B Common Stock","published_at":"2022-03-29T23:26:02.000Z","date":"2022-03-25","kind":"exercise","acquired":false,"shares":15000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Pursuant to the Issuer's amended and restated articles of incorporation, as amended, because the aggregate number of shares of Class B common stock constituted less than twenty percent (20%) of the aggregate number of shares of the Issuer's issued and outstanding common stock as of March 25, 2022, the record date of the Issuer's 2022 annual meeting of shareholders, each outstanding share of Class B common stock was automatically converted into one share of Class A common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Pursuant to the Issuer's amended and restated articles of incorporation, as amended, because the aggregate number of shares of Class B common stock constituted less than twenty percent (20%) of the aggregate number of shares of the Issuer's issued and outstanding common stock as of March 25, 2022, the record date of the Issuer's 2022 annual meeting of shareholders, each outstanding share of Class B common stock was automatically converted into one share of Class A common stock."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Pursuant to the Issuer's amended and restated articles of incorporation, as amended, because the aggregate number of shares of Class B common stock constituted less than twenty percent (20%) of the aggregate number of shares of the Issuer's issued and outstanding common stock as of March 25, 2022, the record date of the Issuer's 2022 annual meeting of shareholders, each outstanding share of Class B common stock was automatically converted into one share of Class A common stock."}],"balance_after":0,"derivative":{"exercise_price":0,"underlying":"Class A Common Stock","underlying_shares":15000},"source":{"system":"sec-edgar","filing":"0000860413-22-000121","document":"wf-form4_164859634378338.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/860413/000086041322000121/wf-form4_164859634378338.xml","form_type":"4"}},{"id":2315977,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":42027,"kind":"person","name":"HEYNEMAN JOHN M JR","position":1,"cik":"0001198518","reported_name":"HEYNEMAN JOHN M JR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72614,"kind":"organization","name":"John M Heyneman Jr. Trust","position":2,"cik":"0001908848","reported_name":"John M Heyneman Jr. Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72615,"kind":"organization","name":"Rae Ann Morss & John Heyneman Jr., Trustees FBO Rae Ann Morss Exemption Trust Under the Scott Family 1996 Trust","position":3,"cik":"0001908849","reported_name":"Rae Ann Morss & John Heyneman Jr., Trustees FBO Rae Ann Morss Exemption Trust Under the Scott Family 1996 Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72616,"kind":"organization","name":"Riki Rae Scott Davidson & John Heyneman Jr., Trustees FBO Riki Scott Davidson Exemption Trust Under the Scott Family 1996 Trust","position":4,"cik":"0001908784","reported_name":"Riki Rae Scott Davidson & John Heyneman Jr., Trustees FBO Riki Scott Davidson Exemption Trust Under the Scott Family 1996 Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72617,"kind":"organization","name":"Towanda Investments Limited Partnership","position":5,"cik":"0001908810","reported_name":"Towanda Investments Limited Partnership","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2022-03-29T23:26:02.000Z","date":"2022-03-25","kind":"exercise","acquired":true,"shares":1400617,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"see footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Pursuant to the Issuer's amended and restated articles of incorporation, as amended, because the aggregate number of shares of Class B common stock constituted less than twenty percent (20%) of the aggregate number of shares of the Issuer's issued and outstanding common stock as of March 25, 2022, the record date of the Issuer's 2022 annual meeting of shareholders, each outstanding share of Class B common stock was automatically converted into one share of Class A common stock."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Composed of 775 shares held of record by John Heyneman, Jr.'s spouse, 890 shares held by Child 1, 1070 by Child 2, 139,921 shares held of record by John M Heyneman Jr. Trust, 85,836 shares held of record by Riki Rae Scott Davidson & John Heyneman Jr., Trustees FBO Riki Scott Davidson Exemption Trust Under the Scott Family 1996 Trust, 85,836 shares held of record by Rae Ann Morss & John Heyneman Jr., Trustees FBO Rae Ann Morss Exemption Trust Under the Scott Family 1996 Trust, 1,085,792 shares held of record by Towanda Investments Limited Partnership, and 3,232 shares held of record by John Heyneman, Jr.'s spouse."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Composed of 775 shares held of record by John Heyneman, Jr.'s spouse, 890 shares held by Child 1, 1070 by Child 2, 139,921 shares held of record by John M Heyneman Jr. Trust, 85,836 shares held of record by Riki Rae Scott Davidson & John Heyneman Jr., Trustees FBO Riki Scott Davidson Exemption Trust Under the Scott Family 1996 Trust, 85,836 shares held of record by Rae Ann Morss & John Heyneman Jr., Trustees FBO Rae Ann Morss Exemption Trust Under the Scott Family 1996 Trust, 1,085,792 shares held of record by Towanda Investments Limited Partnership, and 3,232 shares held of record by John Heyneman, Jr.'s spouse."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"As a result of certain agreements entered into by and among the reporting persons, the Issuer, and certain other stockholders of the Issuer, the reporting persons may be deemed members of a group with the other signatories thereto and may be deemed to share beneficial ownership of the securities reported herein. Each of the reporting persons disclaims beneficial ownership of any such securities, except to the extent of its pecuniary interest therein. The reporting persons expect to file future Forms 4 and 5, if any, together with John Heyneman, Jr. with the indication of direct or indirect ownership in Tables I and II being made from John Heyneman, Jr.'s perspective. The nature of beneficial ownership is described in detail by footnote for all reporting persons. (by see footnote)"}],"balance_after":1403322,"source":{"system":"sec-edgar","filing":"0000860413-22-000121","document":"wf-form4_164859634378338.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/860413/000086041322000121/wf-form4_164859634378338.xml","form_type":"4"}},{"id":2315976,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":42027,"kind":"person","name":"HEYNEMAN JOHN M JR","position":1,"cik":"0001198518","reported_name":"HEYNEMAN JOHN M JR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72614,"kind":"organization","name":"John M Heyneman Jr. Trust","position":2,"cik":"0001908848","reported_name":"John M Heyneman Jr. Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72615,"kind":"organization","name":"Rae Ann Morss & John Heyneman Jr., Trustees FBO Rae Ann Morss Exemption Trust Under the Scott Family 1996 Trust","position":3,"cik":"0001908849","reported_name":"Rae Ann Morss & John Heyneman Jr., Trustees FBO Rae Ann Morss Exemption Trust Under the Scott Family 1996 Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72616,"kind":"organization","name":"Riki Rae Scott Davidson & John Heyneman Jr., Trustees FBO Riki Scott Davidson Exemption Trust Under the Scott Family 1996 Trust","position":4,"cik":"0001908784","reported_name":"Riki Rae Scott Davidson & John Heyneman Jr., Trustees FBO Riki Scott Davidson Exemption Trust Under the Scott Family 1996 Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72617,"kind":"organization","name":"Towanda Investments Limited Partnership","position":5,"cik":"0001908810","reported_name":"Towanda Investments Limited Partnership","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2022-03-29T23:26:02.000Z","date":"2022-03-25","kind":"exercise","acquired":true,"shares":15000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Pursuant to the Issuer's amended and restated articles of incorporation, as amended, because the aggregate number of shares of Class B common stock constituted less than twenty percent (20%) of the aggregate number of shares of the Issuer's issued and outstanding common stock as of March 25, 2022, the record date of the Issuer's 2022 annual meeting of shareholders, each outstanding share of Class B common stock was automatically converted into one share of Class A common stock."}],"balance_after":20554,"source":{"system":"sec-edgar","filing":"0000860413-22-000121","document":"wf-form4_164859634378338.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/860413/000086041322000121/wf-form4_164859634378338.xml","form_type":"4"}},{"id":2322248,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":42027,"kind":"person","name":"HEYNEMAN JOHN M JR","position":1,"cik":"0001198518","reported_name":"HEYNEMAN JOHN M JR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72614,"kind":"organization","name":"John M Heyneman Jr. Trust","position":2,"cik":"0001908848","reported_name":"John M Heyneman Jr. Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72615,"kind":"organization","name":"Rae Ann Morss & John Heyneman Jr., Trustees FBO Rae Ann Morss Exemption Trust Under the Scott Family 1996 Trust","position":3,"cik":"0001908849","reported_name":"Rae Ann Morss & John Heyneman Jr., Trustees FBO Rae Ann Morss Exemption Trust Under the Scott Family 1996 Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72616,"kind":"organization","name":"Riki Rae Scott Davidson & John Heyneman Jr., Trustees FBO Riki Scott Davidson Exemption Trust Under the Scott Family 1996 Trust","position":4,"cik":"0001908784","reported_name":"Riki Rae Scott Davidson & John Heyneman Jr., Trustees FBO Riki Scott Davidson Exemption Trust Under the Scott Family 1996 Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72617,"kind":"organization","name":"Towanda Investments Limited Partnership","position":5,"cik":"0001908810","reported_name":"Towanda Investments Limited Partnership","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2022-03-22T19:22:02.000Z","date":"2022-02-18","kind":"gift","acquired":true,"shares":1260,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"see footnote"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"As a result of certain agreements entered into by and among the reporting persons, the Issuer, and certain other stockholders of the Issuer, the reporting persons may be deemed members of a group with the other signatories thereto and may be deemed to share beneficial ownership of the securities reported herein. Each of the reporting persons disclaims beneficial ownership of any such securities, except to the extent of its pecuniary interest therein. The reporting persons expect to file future Forms 4 and 5, if any, together with John M. Heyneman, Jr. with the indication of direct or indirect ownership in Tables I and II being made from John M. Heyneman, Jr.'s perspective. The nature of beneficial ownership is described in detail by footnote for all reporting persons."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Composed of 745 shares held of record by John M. Heyneman, Jr.'s spouse, 890 shares held by Child 1 and 1,070 by Child 2."}],"balance_after":2705,"source":{"system":"sec-edgar","filing":"0000860413-22-000107","document":"wf-form4_164797690636863.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/860413/000086041322000107/wf-form4_164797690636863.xml","form_type":"4"}},{"id":2322247,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":42027,"kind":"person","name":"HEYNEMAN JOHN M JR","position":1,"cik":"0001198518","reported_name":"HEYNEMAN JOHN M JR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72614,"kind":"organization","name":"John M Heyneman Jr. Trust","position":2,"cik":"0001908848","reported_name":"John M Heyneman Jr. Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72615,"kind":"organization","name":"Rae Ann Morss & John Heyneman Jr., Trustees FBO Rae Ann Morss Exemption Trust Under the Scott Family 1996 Trust","position":3,"cik":"0001908849","reported_name":"Rae Ann Morss & John Heyneman Jr., Trustees FBO Rae Ann Morss Exemption Trust Under the Scott Family 1996 Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72616,"kind":"organization","name":"Riki Rae Scott Davidson & John Heyneman Jr., Trustees FBO Riki Scott Davidson Exemption Trust Under the Scott Family 1996 Trust","position":4,"cik":"0001908784","reported_name":"Riki Rae Scott Davidson & John Heyneman Jr., Trustees FBO Riki Scott Davidson Exemption Trust Under the Scott Family 1996 Trust","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":72617,"kind":"organization","name":"Towanda Investments Limited Partnership","position":5,"cik":"0001908810","reported_name":"Towanda Investments Limited Partnership","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2022-03-22T19:22:02.000Z","date":"2022-02-18","kind":"gift","acquired":false,"shares":1260,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":5554,"source":{"system":"sec-edgar","filing":"0000860413-22-000107","document":"wf-form4_164797690636863.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/860413/000086041322000107/wf-form4_164797690636863.xml","form_type":"4"}},{"id":2470739,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":42027,"kind":"person","name":"HEYNEMAN JOHN M JR","position":1,"cik":"0001198518","reported_name":"HEYNEMAN JOHN M JR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2021-12-16T19:41:21.000Z","date":"2021-12-14","kind":"gift","acquired":true,"shares":650,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"By Child 2"},"balance_after":650,"source":{"system":"sec-edgar","filing":"0000860413-21-000231","document":"wf-form4_163968366653485.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/860413/000086041321000231/wf-form4_163968366653485.xml","form_type":"4"}},{"id":2470738,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":42027,"kind":"person","name":"HEYNEMAN JOHN M JR","position":1,"cik":"0001198518","reported_name":"HEYNEMAN JOHN M JR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2021-12-16T19:41:21.000Z","date":"2021-12-14","kind":"gift","acquired":true,"shares":325,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"By Spouse"},"balance_after":325,"source":{"system":"sec-edgar","filing":"0000860413-21-000231","document":"wf-form4_163968366653485.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/860413/000086041321000231/wf-form4_163968366653485.xml","form_type":"4"}},{"id":2470737,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":42027,"kind":"person","name":"HEYNEMAN JOHN M JR","position":1,"cik":"0001198518","reported_name":"HEYNEMAN JOHN M JR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2021-12-16T19:41:21.000Z","date":"2021-12-14","kind":"sale","acquired":false,"shares":180,"price":40.96,"value":7372.8,"ownership":{"direct":false,"nature":"By Child 1"},"balance_after":470,"source":{"system":"sec-edgar","filing":"0000860413-21-000231","document":"wf-form4_163968366653485.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/860413/000086041321000231/wf-form4_163968366653485.xml","form_type":"4"}},{"id":2470736,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":42027,"kind":"person","name":"HEYNEMAN JOHN M JR","position":1,"cik":"0001198518","reported_name":"HEYNEMAN JOHN M JR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2021-12-16T19:41:21.000Z","date":"2021-12-14","kind":"gift","acquired":true,"shares":650,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"By Child 1"},"balance_after":650,"source":{"system":"sec-edgar","filing":"0000860413-21-000231","document":"wf-form4_163968366653485.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/860413/000086041321000231/wf-form4_163968366653485.xml","form_type":"4"}},{"id":2687767,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":42027,"kind":"person","name":"HEYNEMAN JOHN M JR","position":1,"cik":"0001198518","reported_name":"HEYNEMAN JOHN M JR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2021-06-02T17:00:31.000Z","date":"2021-06-01","kind":"grant","acquired":true,"shares":1168,"price":47.07,"value":54977.76,"ownership":{"direct":true},"balance_after":6814,"source":{"system":"sec-edgar","filing":"0000860413-21-000184","document":"wf-form4_162265321717223.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/860413/000086041321000184/wf-form4_162265321717223.xml","form_type":"4"}},{"id":2804228,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":42027,"kind":"person","name":"HEYNEMAN JOHN M JR","position":1,"cik":"0001198518","reported_name":"HEYNEMAN JOHN M JR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2021-03-08T16:22:37.000Z","date":"2021-03-05","kind":"gift","acquired":false,"shares":1625,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":5646,"source":{"system":"sec-edgar","filing":"0000860413-21-000120","document":"wf-form4_161522053714409.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/860413/000086041321000120/wf-form4_161522053714409.xml","form_type":"4"}},{"id":3128011,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":42027,"kind":"person","name":"HEYNEMAN JOHN M JR","position":1,"cik":"0001198518","reported_name":"HEYNEMAN JOHN M JR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2020-06-02T15:52:48.000Z","date":"2020-06-01","kind":"grant","acquired":true,"shares":1440,"price":31.25,"value":45000.0,"ownership":{"direct":true},"balance_after":7271,"source":{"system":"sec-edgar","filing":"0000860413-20-000149","document":"wf-form4_159111314848169.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/860413/000086041320000149/wf-form4_159111314848169.xml","form_type":"4"}},{"id":3501283,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":42027,"kind":"person","name":"HEYNEMAN JOHN M JR","position":1,"cik":"0001198518","reported_name":"HEYNEMAN JOHN M JR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2019-06-05T15:04:28.000Z","date":"2019-06-03","kind":"grant","acquired":true,"shares":1219,"price":37.06,"value":45176.14,"ownership":{"direct":true},"balance_after":5831,"source":{"system":"sec-edgar","filing":"0000860413-19-000090","document":"wf-form4_155974705124143.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/860413/000086041319000090/wf-form4_155974705124143.xml","form_type":"4"}},{"id":3909509,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":42027,"kind":"person","name":"HEYNEMAN JOHN M JR","position":1,"cik":"0001198518","reported_name":"HEYNEMAN JOHN M JR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2018-06-04T15:55:01.000Z","date":"2018-06-01","kind":"grant","acquired":true,"shares":572,"price":43.65,"value":24967.8,"ownership":{"direct":true},"balance_after":4612,"source":{"system":"sec-edgar","filing":"0000860413-18-000096","document":"wf-form4_152812763748174.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/860413/000086041318000096/wf-form4_152812763748174.xml","form_type":"4"}},{"id":3911628,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":42027,"kind":"person","name":"HEYNEMAN JOHN M JR","position":1,"cik":"0001198518","reported_name":"HEYNEMAN JOHN M JR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2018-06-01T21:34:53.000Z","date":"2018-05-30","kind":"sale","acquired":false,"shares":2000,"price":43.98,"value":87960.0,"ownership":{"direct":true},"balance_after":4040,"source":{"system":"sec-edgar","filing":"0000860413-18-000091","document":"wf-form4_152788887764743.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/860413/000086041318000091/wf-form4_152788887764743.xml","form_type":"4"}},{"id":3919508,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":42027,"kind":"person","name":"HEYNEMAN JOHN M JR","position":1,"cik":"0001198518","reported_name":"HEYNEMAN JOHN M JR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class B Common Stock","published_at":"2018-05-24T21:26:14.000Z","date":"2016-12-15","kind":"gift","acquired":true,"shares":16737,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"By Trust"},"footnotes":[{"field":"security","element":"securityTitle","label":"F2","text":"The Class B Common Stock is convertible at any time into Class A Common Stock on a share for share basis at the discretion of the holder.  The conversion feature of the Class B Common Stock does not expire."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The Class B Common Stock is convertible at any time into Class A Common Stock on a share for share basis at the discretion of the holder.  The conversion feature of the Class B Common Stock does not expire."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The Class B Common Stock is convertible at any time into Class A Common Stock on a share for share basis at the discretion of the holder.  The conversion feature of the Class B Common Stock does not expire."}],"balance_after":139921,"derivative":{"exercise_price":0,"underlying":"Class A Common Stock","underlying_shares":16737},"source":{"system":"sec-edgar","filing":"0000860413-18-000080","document":"wf-form4_152719716040418.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":14,"url":"https://www.sec.gov/Archives/edgar/data/860413/000086041318000080/wf-form4_152719716040418.xml","form_type":"4"}},{"id":3919507,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":42027,"kind":"person","name":"HEYNEMAN JOHN M JR","position":1,"cik":"0001198518","reported_name":"HEYNEMAN JOHN M JR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Stock Options (Right to Buy)","published_at":"2018-05-24T21:26:14.000Z","date":"2016-11-03","kind":"exercise","acquired":false,"shares":4428,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":0,"derivative":{"exercise_price":20.82,"exercise_date":"2013-05-22","expiration_date":"2013-05-22","underlying":"Class A Common Stock","underlying_shares":4428},"source":{"system":"sec-edgar","filing":"0000860413-18-000080","document":"wf-form4_152719716040418.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":13,"url":"https://www.sec.gov/Archives/edgar/data/860413/000086041318000080/wf-form4_152719716040418.xml","form_type":"4"}},{"id":3919506,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":42027,"kind":"person","name":"HEYNEMAN JOHN M JR","position":1,"cik":"0001198518","reported_name":"HEYNEMAN JOHN M JR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Stock Options (Right to Buy)","published_at":"2018-05-24T21:26:14.000Z","date":"2016-09-08","kind":"exercise","acquired":false,"shares":5801,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":0,"derivative":{"exercise_price":13.6,"exercise_date":"2012-05-23","expiration_date":"2022-05-23","underlying":"Class A Common Stock","underlying_shares":5801},"source":{"system":"sec-edgar","filing":"0000860413-18-000080","document":"wf-form4_152719716040418.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":12,"url":"https://www.sec.gov/Archives/edgar/data/860413/000086041318000080/wf-form4_152719716040418.xml","form_type":"4"}},{"id":3919505,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":42027,"kind":"person","name":"HEYNEMAN JOHN M JR","position":1,"cik":"0001198518","reported_name":"HEYNEMAN JOHN M JR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Stock Options (Right to Buy)","published_at":"2018-05-24T21:26:14.000Z","date":"2016-08-24","kind":"exercise","acquired":false,"shares":3094,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":0,"derivative":{"exercise_price":13.25,"exercise_date":"2011-05-24","expiration_date":"2021-05-24","underlying":"Class A Common Stock","underlying_shares":3094},"source":{"system":"sec-edgar","filing":"0000860413-18-000080","document":"wf-form4_152719716040418.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":11,"url":"https://www.sec.gov/Archives/edgar/data/860413/000086041318000080/wf-form4_152719716040418.xml","form_type":"4"}},{"id":3919504,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":42027,"kind":"person","name":"HEYNEMAN JOHN M JR","position":1,"cik":"0001198518","reported_name":"HEYNEMAN JOHN M JR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Stock Options (Right to Buy)","published_at":"2018-05-24T21:26:14.000Z","date":"2016-08-24","kind":"exercise","acquired":false,"shares":1972,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":0,"derivative":{"exercise_price":15.91,"exercise_date":"2010-05-07","expiration_date":"2020-05-07","underlying":"Class A Common Stock","underlying_shares":1972},"source":{"system":"sec-edgar","filing":"0000860413-18-000080","document":"wf-form4_152719716040418.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":10,"url":"https://www.sec.gov/Archives/edgar/data/860413/000086041318000080/wf-form4_152719716040418.xml","form_type":"4"}},{"id":3919503,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":42027,"kind":"person","name":"HEYNEMAN JOHN M JR","position":1,"cik":"0001198518","reported_name":"HEYNEMAN JOHN M JR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2018-05-24T21:26:14.000Z","date":"2016-12-12","kind":"sale","acquired":false,"shares":1000,"price":41.87,"value":41870.0,"ownership":{"direct":true},"balance_after":6040,"source":{"system":"sec-edgar","filing":"0000860413-18-000080","document":"wf-form4_152719716040418.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/860413/000086041318000080/wf-form4_152719716040418.xml","form_type":"4"}},{"id":3919502,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":42027,"kind":"person","name":"HEYNEMAN JOHN M JR","position":1,"cik":"0001198518","reported_name":"HEYNEMAN JOHN M JR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2018-05-24T21:26:14.000Z","date":"2016-11-25","kind":"sale","acquired":false,"shares":2000,"price":37.35,"value":74700.0,"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 sold in multiple transactions at prices ranging from $37.29 to $37.47  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":7040,"source":{"system":"sec-edgar","filing":"0000860413-18-000080","document":"wf-form4_152719716040418.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/860413/000086041318000080/wf-form4_152719716040418.xml","form_type":"4"}},{"id":3919501,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":42027,"kind":"person","name":"HEYNEMAN JOHN M JR","position":1,"cik":"0001198518","reported_name":"HEYNEMAN JOHN M JR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2018-05-24T21:26:14.000Z","date":"2016-11-03","kind":"tax_withholding","acquired":false,"shares":2959,"price":31.15,"value":92172.85,"ownership":{"direct":true},"balance_after":9040,"source":{"system":"sec-edgar","filing":"0000860413-18-000080","document":"wf-form4_152719716040418.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/860413/000086041318000080/wf-form4_152719716040418.xml","form_type":"4"}},{"id":3919500,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":42027,"kind":"person","name":"HEYNEMAN JOHN M JR","position":1,"cik":"0001198518","reported_name":"HEYNEMAN JOHN M JR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2018-05-24T21:26:14.000Z","date":"2016-11-03","kind":"exercise","acquired":true,"shares":4428,"price":20.82,"value":92190.96,"ownership":{"direct":true},"balance_after":11999,"source":{"system":"sec-edgar","filing":"0000860413-18-000080","document":"wf-form4_152719716040418.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/860413/000086041318000080/wf-form4_152719716040418.xml","form_type":"4"}},{"id":3919499,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":42027,"kind":"person","name":"HEYNEMAN JOHN M JR","position":1,"cik":"0001198518","reported_name":"HEYNEMAN JOHN M JR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2018-05-24T21:26:14.000Z","date":"2016-09-08","kind":"tax_withholding","acquired":false,"shares":2540,"price":31.05,"value":78867.0,"ownership":{"direct":true},"balance_after":7571,"source":{"system":"sec-edgar","filing":"0000860413-18-000080","document":"wf-form4_152719716040418.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/860413/000086041318000080/wf-form4_152719716040418.xml","form_type":"4"}},{"id":3919498,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":42027,"kind":"person","name":"HEYNEMAN JOHN M JR","position":1,"cik":"0001198518","reported_name":"HEYNEMAN JOHN M JR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2018-05-24T21:26:14.000Z","date":"2016-09-08","kind":"exercise","acquired":true,"shares":5801,"price":13.6,"value":78893.6,"ownership":{"direct":true},"balance_after":10111,"source":{"system":"sec-edgar","filing":"0000860413-18-000080","document":"wf-form4_152719716040418.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/860413/000086041318000080/wf-form4_152719716040418.xml","form_type":"4"}},{"id":3919497,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":42027,"kind":"person","name":"HEYNEMAN JOHN M JR","position":1,"cik":"0001198518","reported_name":"HEYNEMAN JOHN M JR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2018-05-24T21:26:14.000Z","date":"2016-08-24","kind":"tax_withholding","acquired":false,"shares":2405,"price":30.09,"value":72366.45,"ownership":{"direct":true},"balance_after":4310,"source":{"system":"sec-edgar","filing":"0000860413-18-000080","document":"wf-form4_152719716040418.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/860413/000086041318000080/wf-form4_152719716040418.xml","form_type":"4"}},{"id":3919496,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":42027,"kind":"person","name":"HEYNEMAN JOHN M JR","position":1,"cik":"0001198518","reported_name":"HEYNEMAN JOHN M JR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2018-05-24T21:26:14.000Z","date":"2016-08-24","kind":"exercise","acquired":true,"shares":3094,"price":13.25,"value":40995.5,"ownership":{"direct":true},"balance_after":6715,"source":{"system":"sec-edgar","filing":"0000860413-18-000080","document":"wf-form4_152719716040418.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/860413/000086041318000080/wf-form4_152719716040418.xml","form_type":"4"}},{"id":3919495,"issuer":{"id":4141,"kind":"organization","name":"FIRST INTERSTATE BANCSYSTEM INC","symbol":"FIBK"},"owners":[{"id":42027,"kind":"person","name":"HEYNEMAN JOHN M JR","position":1,"cik":"0001198518","reported_name":"HEYNEMAN JOHN M JR","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2018-05-24T21:26:14.000Z","date":"2016-08-24","kind":"exercise","acquired":true,"shares":1972,"price":15.91,"value":31374.52,"ownership":{"direct":true},"balance_after":3621,"source":{"system":"sec-edgar","filing":"0000860413-18-000080","document":"wf-form4_152719716040418.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/860413/000086041318000080/wf-form4_152719716040418.xml","form_type":"4"}}]}