FIRST INTERSTATE BANCSYSTEM INC — Director's Dealing 2021

May 17, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: FIRST INTERSTATE BANCSYSTEM INC (FIBK)
CIK: 0000860413
Period of Report: 2021-05-14

Reporting Person: SCOTT JAMES R (Director, 10% Owner)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-05-14	Class A Common Stock	C	21250	—	Acquired	35723	Indirect

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-05-14	Class B Common Stock	$0.0	C	21250	Disposed		Class A Common Stock (21250.0)	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Class A Common Stock	17764	Indirect
Class A Common Stock	8951	Direct

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Class B Common Stock	$0.0		Class A Common Stock (44532.0)	44532	Indirect

Footnotes

F1: 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.