FIRST INTERSTATE BANCSYSTEM INC — Director's Dealing 2018

May 15, 2018

SEC Form 4/A — Form 4/A

Issuer: FIRST INTERSTATE BANCSYSTEM INC (FIBK)
CIK: 0000860413
Period of Report: 2018-02-15

Reporting Person: Scott Jonathan R (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2018-02-15	Class A Common Stock	C	2000	—	Acquired	7241	Direct
2018-02-15	Class A Common Stock	S	2000	—	Disposed	5241	Direct
2018-02-15	Class A Common Stock	F	150	—	Disposed	5091	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2018-02-15	Stock Options (Right to Buy)	$20.87	M	2000	Disposed	2018-02-15	Class B Common Stock (2000.0)	Direct
2018-02-15	Class B Common Stock	$0.0	M	2000	Acquired		Class A Commnon Stock (2000.0)	Direct
2018-02-15	Class B Common Stock	$0.0	C	2000	Disposed		Class A Commnon Stock (2000.0)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Class A Common Stock	4576	Indirect
Class A Common Stock	13188	Indirect

Footnotes

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

F2: 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 and the reporting person elected to convert the shares upon receipt.