FIRST INTERSTATE BANCSYSTEM INC — Director's Dealing 2013

May 6, 2013

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: FIRST INTERSTATE BANCSYSTEM INC (FIBK)
CIK: 0000860413
Period of Report: 2013-05-02

Reporting Person: CRUM DAVID H (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2013-05-02	Class A Common Stock	M	2692	$11.50	Acquired	57935	Indirect

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2013-05-02	Stock Options	$11.50	M	2692	Disposed	2013-06-02	Class B common stock (2692)	Direct

Footnotes

F1: Simultaneous with exercise of stock options, an election was made to immediately convert Class B common shares received to Class A common shares. In addition, immediately subsequent to receipt of Class A shares pursuant to the option exercise, the form of beneficial ownership changed from direct to indirect by trust.