James R. Scott - 14 May 2021 Form 4 Insider Report for FIRST INTERSTATE BANCSYSTEM INC (FIBK)

Role: Director, 10%+ Owner
Signature: /s/ Kirk D. Jensen, Attorney-in-Fact for Reporting Person
Issuer symbol: FIBK
Transactions as of: 14 May 2021
Net transactions value: $0
Form type: 4
Filing time: 17 May 2021, 10:39:56 UTC
Next filing: 02 Jun 2021
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	FIBK	Class A Common Stock	Conversion of derivative security	$0	+21,250	+147%	$0.000000	35,723	14 May 2021	By Trust
holding	FIBK	Class A Common Stock						17,764	14 May 2021	By 401(k)
holding	FIBK	Class A Common Stock						8,951	14 May 2021	Direct

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	FIBK	Class B Common Stock	Conversion of derivative security	$0	-21,250	-1.1%	$0.000000	1,985,462	14 May 2021	Class A Common Stock	21,250	$0.000000	By Trust	F1
holding	FIBK	Class B Common Stock						44,532	14 May 2021	Class A Common Stock	44,532	$0.000000	By Spouse	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
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.