FIRST INTERSTATE BANCSYSTEM INC — Director's Dealing 2021

May 10, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: FIRST INTERSTATE BANCSYSTEM INC (FIBK)
CIK: 0000860413
Period of Report: 2021-05-07

Reporting Person: Scott Risa Kae (10% Owner)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-05-07	Class A Common Stock	C	8000	—	Acquired	8835	Indirect

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-05-07	Class B Common Stock	$0.0	C	8000	Disposed		Class A Common Stock (8000.0)	Indirect

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Class B Common Stock	$0.0		Class A Common Stock (85836.0)	85836	Indirect
Class B Common Stock	$0.0		Class A Common Stock (136363.0)	136363	Direct

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.