Scott James R. Jr

SEC source: 0000860413-26-000052 · wk-form4_1780508706.xml · nonDerivative · entry 1

Scott James R. Jr · CIK 0001675872 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 80,792

F1 · shares: 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.

SEC source: 0000860413-25-000100 · wk-form4_1748977156.xml · nonDerivative · entry 1

Scott James R. Jr · CIK 0001675872 · Director · 10% owner

First Interstate Bank TTEE for Dana S Andersson GST Exempt Trust No 1 Dtd 12/11/2020 · CIK 0001910215 · 10% owner

First Interstate Bank TTEE for James R Scott Jr. GST Exempt Trust No 1 Dtd 12/11/2020 · CIK 0001910352 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 78,545

F1 · shares: 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.

SEC source: 0000860413-25-000074 · wk-form4_1748625714.xml · nonDerivative · entry 6

Scott James R. Jr · CIK 0001675872 · Director · 10% owner

First Interstate Bank TTEE for Dana S Andersson GST Exempt Trust No 1 Dtd 12/11/2020 · CIK 0001910215 · 10% owner

First Interstate Bank TTEE for James R Scott Jr. GST Exempt Trust No 1 Dtd 12/11/2020 · CIK 0001910352 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 75,599

F3 · shares: Disposition to the issuer of issuer securities in payment of minimum required withholding taxes due upon vesting of restricted stock units.

SEC source: 0000860413-25-000074 · wk-form4_1748625714.xml · nonDerivative · entry 5

Scott James R. Jr · CIK 0001675872 · Director · 10% owner

First Interstate Bank TTEE for Dana S Andersson GST Exempt Trust No 1 Dtd 12/11/2020 · CIK 0001910215 · 10% owner

First Interstate Bank TTEE for James R Scott Jr. GST Exempt Trust No 1 Dtd 12/11/2020 · CIK 0001910352 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 77,345

F3 · shares: Disposition to the issuer of issuer securities in payment of minimum required withholding taxes due upon vesting of restricted stock units.

SEC source: 0000860413-25-000074 · wk-form4_1748625714.xml · nonDerivative · entry 4

Scott James R. Jr · CIK 0001675872 · Director · 10% owner

First Interstate Bank TTEE for Dana S Andersson GST Exempt Trust No 1 Dtd 12/11/2020 · CIK 0001910215 · 10% owner

First Interstate Bank TTEE for James R Scott Jr. GST Exempt Trust No 1 Dtd 12/11/2020 · CIK 0001910352 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 77,368

F4 · shares: Shares issuable upon vesting of restricted stock units granted to the reporting person pursuant to the Registrant's Equity and Incentive Plan, which units are scheduled to vest in three equal annual installments beginning on March 15, 2026, subject to the reporting person's continued employment through each applicable vesting date.

SEC source: 0001493152-24-047565 · ownership.xml · nonDerivative · entry 1

Scott James R. Jr · CIK 0001675872 · 10% owner

First Interstate Bank TTEE for Dana S Andersson GST Exempt Trust No 1 Dtd 12/11/2020 · CIK 0001910215 · 10% owner

First Interstate Bank TTEE for James R Scott Jr. GST Exempt Trust No 1 Dtd 12/11/2020 · CIK 0001910352 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 75,387

SEC source: 0000860413-25-000074 · wk-form4_1748625714.xml · nonDerivative · entry 3

Scott James R. Jr · CIK 0001675872 · Director · 10% owner

First Interstate Bank TTEE for Dana S Andersson GST Exempt Trust No 1 Dtd 12/11/2020 · CIK 0001910215 · 10% owner

First Interstate Bank TTEE for James R Scott Jr. GST Exempt Trust No 1 Dtd 12/11/2020 · CIK 0001910352 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 76,155

F3 · shares: Disposition to the issuer of issuer securities in payment of minimum required withholding taxes due upon vesting of restricted stock units.

SEC source: 0000860413-25-000074 · wk-form4_1748625714.xml · nonDerivative · entry 2

Scott James R. Jr · CIK 0001675872 · Director · 10% owner

First Interstate Bank TTEE for Dana S Andersson GST Exempt Trust No 1 Dtd 12/11/2020 · CIK 0001910215 · 10% owner

First Interstate Bank TTEE for James R Scott Jr. GST Exempt Trust No 1 Dtd 12/11/2020 · CIK 0001910352 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 76,178

F2 · shares: Shares issuable upon vesting of restricted stock units granted to the reporting person pursuant to the Registrant's Equity and Incentive Plan, which units are scheduled to vest in three equal annual installments beginning on March 15, 2025, subject to the reporting person's continued employment through each applicable vesting date.

SEC source: 0000860413-25-000074 · wk-form4_1748625714.xml · nonDerivative · entry 1

Scott James R. Jr · CIK 0001675872 · Director · 10% owner

First Interstate Bank TTEE for Dana S Andersson GST Exempt Trust No 1 Dtd 12/11/2020 · CIK 0001910215 · 10% owner

First Interstate Bank TTEE for James R Scott Jr. GST Exempt Trust No 1 Dtd 12/11/2020 · CIK 0001910352 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 75,579

F1 · shares: Shares issuable upon vesting of restricted stock units granted to the reporting person pursuant to the Registrant's Equity and Incentive Plan, which units are scheduled to vest in three equal annual installments beginning on March 15, 2024, subject to the reporting person's continued employment through each applicable vesting date.

SEC source: 0001493152-22-031525 · ownership.xml · nonDerivative · entry 1

Scott James R. Jr · CIK 0001675872 · 10% owner

First Interstate Bank TTEE for Dana S Andersson GST Exempt Trust No 1 Dtd 12/11/2020 · CIK 0001910215 · 10% owner

First Interstate Bank TTEE for James R Scott Jr. GST Exempt Trust No 1 Dtd 12/11/2020 · CIK 0001910352 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 81,454

F1 · price: The price reported in column 4 is a weighted average price. The shares sold on 11/10/2022 were sold in multiple transactions at prices ranging from $ 46.25 to $ 46.305. 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.

SEC source: 0001493152-22-029964 · ownership.xml · nonDerivative · entry 2

Scott James R. Jr · CIK 0001675872 · 10% owner

First Interstate Bank TTEE for Dana S Andersson GST Exempt Trust No 1 Dtd 12/11/2020 · CIK 0001910215 · 10% owner

First Interstate Bank TTEE for James R Scott Jr. GST Exempt Trust No 1 Dtd 12/11/2020 · CIK 0001910352 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 85,306

SEC source: 0001493152-22-029964 · ownership.xml · nonDerivative · entry 1

Scott James R. Jr · CIK 0001675872 · 10% owner

First Interstate Bank TTEE for Dana S Andersson GST Exempt Trust No 1 Dtd 12/11/2020 · CIK 0001910215 · 10% owner

First Interstate Bank TTEE for James R Scott Jr. GST Exempt Trust No 1 Dtd 12/11/2020 · CIK 0001910352 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 90,306

F1 · price: The price reported in column 4 is a weighted average price. The shares sold on 10/28/22 were sold in multiple transactions at prices ranging from $ 45.00 to 45.007. 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.

SEC source: 0001493152-22-023136 · ownership.xml · nonDerivative · entry 1

Scott James R. Jr · CIK 0001675872 · 10% owner

First Interstate Bank TTEE for Dana S Andersson GST Exempt Trust No 1 Dtd 12/11/2020 · CIK 0001910215 · 10% owner

First Interstate Bank TTEE for James R Scott Jr. GST Exempt Trust No 1 Dtd 12/11/2020 · CIK 0001910352 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 100,436

F1 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $ 42.00 to 42.04. 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.

SEC source: 0001493152-22-022386 · ownership.xml · nonDerivative · entry 1

Scott James R. Jr · CIK 0001675872 · 10% owner

First Interstate Bank TTEE for Dana S Andersson GST Exempt Trust No 1 Dtd 12/11/2020 · CIK 0001910215 · 10% owner

First Interstate Bank TTEE for James R Scott Jr. GST Exempt Trust No 1 Dtd 12/11/2020 · CIK 0001910352 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 102,936

F1 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $ 41.00 to 41.04. 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.

SEC source: 0000899243-22-012682 · doc4.xml · derivative · entry 2

Scott James R. Jr · CIK 0001675872 · 10% owner

First Interstate Bank TTEE for Dana S Andersson GST Exempt Trust No 1 Dtd 12/11/2020 · CIK 0001910215 · 10% owner

First Interstate Bank TTEE for James R Scott Jr. GST Exempt Trust No 1 Dtd 12/11/2020 · CIK 0001910352 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · see footnote

Disclosed balance after: 0

Underlying: Class A Common Stock · 149,137 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Pursuant to the Issuer's articles of incorporation, 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 annual meeting of shareholders, each outstanding share of Class B Common Stock was automatically converted into one share of Class A Common Stock.

F1 · kind: Pursuant to the Issuer's articles of incorporation, 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 annual meeting of shareholders, each outstanding share of Class B Common Stock was automatically converted into one share of Class A Common Stock.

F1 · derivative.exercise_date: Pursuant to the Issuer's articles of incorporation, 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 annual meeting of shareholders, each outstanding share of Class B Common Stock was automatically converted into one share of Class A Common Stock.

F1 · derivative.expiration_date: Pursuant to the Issuer's articles of incorporation, 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 annual meeting of shareholders, each outstanding share of Class B Common Stock was automatically converted into one share of Class A Common Stock.

F3 · ownership.nature: Composed of 105,436 shares held of record by James R. Scott Jr., 25,642 shares held of record by First Interstate Bank TTEE for Dana S Andersson GST Exempt Trust No 1 Dtd 12/11/2020, 25,642 shares held of record by First Interstate Bank TTEE for James R Scott Jr. GST Exempt Trust No 1 Dtd 12/11/2020.

SEC source: 0000899243-22-012682 · doc4.xml · nonDerivative · entry 1

Scott James R. Jr · CIK 0001675872 · 10% owner

First Interstate Bank TTEE for Dana S Andersson GST Exempt Trust No 1 Dtd 12/11/2020 · CIK 0001910215 · 10% owner

First Interstate Bank TTEE for James R Scott Jr. GST Exempt Trust No 1 Dtd 12/11/2020 · CIK 0001910352 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · see footnote

Disclosed balance after: 156,720

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: Pursuant to the Issuer's articles of incorporation, 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 annual meeting of shareholders, each outstanding share of Class B Common Stock was automatically converted into one share of Class A Common Stock.

F1 · price: Pursuant to the Issuer's articles of incorporation, 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 annual meeting of shareholders, each outstanding share of Class B Common Stock was automatically converted into one share of Class A Common Stock.

F2 · balance_after: 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 James R. Scott Jr.

F3 · ownership.nature: Composed of 105,436 shares held of record by James R. Scott Jr., 25,642 shares held of record by First Interstate Bank TTEE for Dana S Andersson GST Exempt Trust No 1 Dtd 12/11/2020, 25,642 shares held of record by First Interstate Bank TTEE for James R Scott Jr. GST Exempt Trust No 1 Dtd 12/11/2020.

SEC source: 0000860413-21-000185 · wf-form4_162265323402140.xml · nonDerivative · entry 1

Scott James R. Jr · CIK 0001675872 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,583

SEC source: 0000860413-21-000124 · wf-form4_161524560827067.xml · nonDerivative · entry 1

Scott James R. Jr · CIK 0001675872 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,459

F1 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $49.18 to $49.89. 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.

SEC source: 0000860413-21-000122 · wf-form4_161522534720243.xml · nonDerivative · entry 1

Scott James R. Jr · CIK 0001675872 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,408

F1 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $47.75 to $47.94. 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.

SEC source: 0000860413-21-000118 · wf-form4_161489324728744.xml · nonDerivative · entry 1

Scott James R. Jr · CIK 0001675872 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 19,489

F1 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $47.25 to $48.44. 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.

SEC source: 0000860413-21-000104 · wf-form4_161463132249674.xml · nonDerivative · entry 1

Scott James R. Jr · CIK 0001675872 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 33,518

SEC source: 0000860413-20-000264 · wf-form4_160805471125288.xml · derivative · entry 2

Scott James R. Jr · CIK 0001675872 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · Trust

Disclosed balance after: 25,642

Underlying: Class A Common Stock · 25,642 shares

Expires not disclosed

F1 · derivative.exercise_price: 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.

F1 · derivative.exercise_date: 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.

F1 · derivative.expiration_date: 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.

SEC source: 0000860413-20-000264 · wf-form4_160805471125288.xml · derivative · entry 1

Scott James R. Jr · CIK 0001675872 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 97,853

Underlying: Class A Common Stock · 51,283 shares

Expires not disclosed

F1 · derivative.exercise_price: 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.

F1 · derivative.exercise_date: 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.

F1 · derivative.expiration_date: 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.

SEC source: 0000860413-20-000155 · wf-form4_159111711627144.xml · nonDerivative · entry 1

Scott James R. Jr · CIK 0001675872 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 47,547

SEC source: 0000860413-19-000168 · wf-form4_157317104663863.xml · nonDerivative · entry 1

Scott James R. Jr · CIK 0001675872 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 44,827

SEC source: 0000860413-19-000163 · wf-form4_157306412048942.xml · nonDerivative · entry 1

Scott James R. Jr · CIK 0001675872 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 44,543

F1 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $43.51 to $43.83. 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.

SEC source: 0000860413-19-000166 · wf-form4a_157316762299464.xml · nonDerivative · entry 1

Scott James R. Jr · CIK 0001675872 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 45,127

F1 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $43.51 to $43.83. 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.

F2 · balance_after: The Amendment is only being filed to correct end of period holding. Shares in the amount 835 were incorrectly reported as being forfeited as taxes on 6/3/19 Form 4. This end of period holding reflects the addition of 835 shares.

F3 · balance_after: The Amendment is only being filed to correct the end of period holding. This holding reflects the removal of 251 shares incorrectly added to the end of period holding via footnote on 9/9/19 Form 4A.

SEC source: 0000860413-19-000134 · wf-form4a_156804486613687.xml · derivative · entry 2

Scott James R. Jr · CIK 0001675872 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 46,570

Underlying: Class A Common Stock · 28,575 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: 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.

F3 · derivative.exercise_date: 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.

F3 · derivative.expiration_date: 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.

SEC source: 0000860413-19-000134 · wf-form4a_156804486613687.xml · nonDerivative · entry 1

Scott James R. Jr · CIK 0001675872 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 48,321

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · balance_after: This amount eliminates 251 shares to correct a mathematical error in calculating the number of securities historically beneficially owned.

F2 · balance_after: Filed solely to correct end of period holdings due to number transposition.

SEC source: 0000860413-19-000132 · wf-form4_156804419418549.xml · derivative · entry 2

Scott James R. Jr · CIK 0001675872 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 46,570

Underlying: Class A Common Stock · 28,575 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: 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.

F2 · derivative.exercise_date: 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.

F2 · derivative.expiration_date: 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.

SEC source: 0000860413-19-000132 · wf-form4_156804419418549.xml · nonDerivative · entry 1

Scott James R. Jr · CIK 0001675872 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 48,231

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · balance_after: This amount eliminates 251 shares to correct a mathematical error in calculating the number of securities historically beneficially owned.

SEC source: 0000860413-19-000111 · wf-form4_156510241467632.xml · derivative · entry 1

Scott James R. Jr · CIK 0001675872 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 75,145

Underlying: Class A Common Stock · 75,145 shares

Expires not disclosed

F1 · derivative.exercise_price: 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.

F1 · derivative.exercise_date: 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.

F1 · derivative.expiration_date: 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.

SEC source: 0000860413-19-000082 · wf-form4_155974677473922.xml · nonDerivative · entry 2

Scott James R. Jr · CIK 0001675872 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 19,495

SEC source: 0000860413-19-000082 · wf-form4_155974677473922.xml · nonDerivative · entry 1

Scott James R. Jr · CIK 0001675872 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 20,330

SEC source: 0000860413-19-000047 · wf-form4_155302395096499.xml · nonDerivative · entry 3

Scott James R. Jr · CIK 0001675872 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 18,554

F2 · shares: Shares were issued for no consideration pursuant to the Registrants 2015 Equity Incentive Plan, and vest in three equal portions on February 15th of the first, second and third years following the year in which the grant is made.

SEC source: 0000860413-19-000047 · wf-form4_155302395096499.xml · nonDerivative · entry 2

Scott James R. Jr · CIK 0001675872 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 18,303

SEC source: 0000860413-19-000047 · wf-form4_155302395096499.xml · nonDerivative · entry 1

Scott James R. Jr · CIK 0001675872 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 18,401

F1 · shares: Shares awarded in conjunction with a Performance Share Agreement issued on 2/15/2016 under the Issuer's Equity and Incentive Plan that vested upon the satisfaction of performance criteria other than the price of the issuer's stock.

SEC source: 0000860413-19-000014 · wf-form4_155070009439741.xml · nonDerivative · entry 1

Scott James R. Jr · CIK 0001675872 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 18,163

F1 · shares: Disposition to the issuer of issuer securities in payment of minimum required withholding taxes due upon vesting of unvested shares.

F2 · balance_after: Excludes shares of restricted Class A Common Stock subject to performance based vesting previously included in the reporting person's end of period holdings.

SEC source: 0000860413-18-000102 · wf-form4_152812967613643.xml · nonDerivative · entry 1

Scott James R. Jr · CIK 0001675872 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 18,457

SEC source: 0000860413-18-000034 · wf-form4_152035776046717.xml · nonDerivative · entry 1

Scott James R. Jr · CIK 0001675872 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,312

F1 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $40.50 to $40.625. 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.

SEC source: 0000860413-18-000033 · wf-form4_152035707149956.xml · nonDerivative · entry 1

Scott James R. Jr · CIK 0001675872 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 23,412

F1 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $40.00 to $40.20. 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.

SEC source: 0000860413-18-000032 · wf-form4_151994088419077.xml · nonDerivative · entry 1

Scott James R. Jr · CIK 0001675872 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 29,512

F1 · shares: Shares issued for no consideration pursuant to the Registrants 2015 Equity Compensation Plan. The time-based shares that vest in three equal portions on the first, second, and third, annual anniversaries of February 15, 2018.

SEC source: 0000860413-18-000031 · wf-form4a_151993995465247.xml · nonDerivative · entry 1

Scott James R. Jr · CIK 0001675872 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 29,206

SEC source: 0000860413-18-000016 · wf-form4_151880706911588.xml · nonDerivative · entry 1

Scott James R. Jr · CIK 0001675872 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 29,238

F1 · shares: Disposition to the issuer of issuer securities in payment of minimum required withholding taxes due upon vesting of unvested shares.

SEC source: 0001209191-17-056348 · doc4.xml · derivative · entry 2

Scott James R. Jr · CIK 0001675872 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 27,930 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · security: On March 5, 2010, the Company recapitalized its existing common stock. The recapitalization included, among other things, a redesignation of existing common stock as Class B common stock and the creation of a new class of common stock designated as Class A common stock, which is listed on the NASDAQ stock market under the symbol "FIBK". 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.

F1 · derivative.exercise_date: On March 5, 2010, the Company recapitalized its existing common stock. The recapitalization included, among other things, a redesignation of existing common stock as Class B common stock and the creation of a new class of common stock designated as Class A common stock, which is listed on the NASDAQ stock market under the symbol "FIBK". 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.

F1 · derivative.expiration_date: On March 5, 2010, the Company recapitalized its existing common stock. The recapitalization included, among other things, a redesignation of existing common stock as Class B common stock and the creation of a new class of common stock designated as Class A common stock, which is listed on the NASDAQ stock market under the symbol "FIBK". 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.

SEC source: 0001209191-17-056348 · doc4.xml · nonDerivative · entry 1

Scott James R. Jr · CIK 0001675872 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 29,263

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0000860413-18-000047 · wf-form4a_152287160242339.xml · derivative · entry 3

Scott James R. Jr · CIK 0001675872 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 27,930 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · security: 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.

F1 · derivative.exercise_date: 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.

F1 · derivative.expiration_date: 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.

SEC source: 0000860413-18-000047 · wf-form4a_152287160242339.xml · nonDerivative · entry 1

Scott James R. Jr · CIK 0001675872 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 29,263

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0000860413-18-000047 · wf-form4a_152287160242339.xml · derivative · entry 2

Scott James R. Jr · CIK 0001675872 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 27,930

Underlying: Class A Common Stock · 27,930 shares

Expires not disclosed

F1 · security: 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.

F1 · derivative.exercise_date: 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.

F1 · derivative.expiration_date: 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.

SEC source: 0001209191-17-037398 · doc4.xml · nonDerivative · entry 1

Scott James R. Jr · CIK 0001675872 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,333