FIRST INTERSTATE BANCSYSTEM INC — Director's Dealing 2013

May 16, 2013

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: FIRST INTERSTATE BANCSYSTEM INC (FIBK)
CIK: 0000860413
Period of Report: 2013-05-14

Reporting Person: SCOTT RANDALL I (Director, 10% Owner)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2013-05-14	Stock Option	$11.50	M	2692	Disposed	2013-06-02	Class B Common Stock (2692)	Direct
2013-05-14	Class B Common Stock	$0.00	M	2692	Acquired	2029-12-31	Class A Common Stock (2692)	Direct
2013-05-14	Class B Common Stock	$0.00	F	1532	Disposed	2029-12-31	Class A Common Stock (1532)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Class A Common Stock	9648	Indirect
Class A Common Stock	1599	Direct

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Class B Common Stock	$0.00	2029-12-31	Class A Common Stock (146426)	146426	Indirect
Class B Common Stock	$0.00	2029-12-31	Class A Common Stock (82104)	82104	Indirect
Class B Common Stock	$0.00	2029-12-31	Class A Common Stock (3795676)	3795676	Indirect
Class B Common Stock	$0.00	2029-12-31	Class A Common Stock (85836)	85836	Indirect

Footnotes

F1: On March 5, 2010, the Company recapitalized its existing common stock. The recapitalization included, among other things, a redesignation of existing common stock as Class B common stock, a four-for-one split of Class B common stock, and the creation of a new class of common stock designated as Class A common stock. An initial public offering of Class A common stock, which is listed on the NASDAQ stock market under the symbol "FIBK", was commenced March 23, 2010 and concluded on March 29, 2010. Class B Common Stock is convertible at any time into Class A Common stock on a share for share basis at the descretion of the holder. The conversion feature of the Class B common stock does not expire.

F2: Includes 1,532 shares for payment of option exercise price, valued at $20.20 per share.