FIRST INTERSTATE BANCSYSTEM INC — Director's Dealing 2011

Aug 3, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: FIRST INTERSTATE BANCSYSTEM INC (FIBK)
CIK: 0000860413
Period of Report: 2011-08-01

Reporting Person: CRUM DAVID H (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-08-02	Class A Common Stock	C	2984	$0.00	Acquired	2984	Direct
2011-08-02	Class A Common Stock	A	349	$13.8041	Acquired	46202	Indirect
2011-08-02	Class A Common Stock	A	149	$13.809	Acquired	46351	Indirect
2011-08-02	Class A Common Stock	A	100	$13.792	Acquired	46451	Indirect

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-08-01	Stock Options	$11.00	M	2984	Disposed	2011-08-16	Class B Common Stock (2984)	Direct
2011-08-01	Class B Common Stock	$0.00	M	2984	Acquired	2029-12-31	Class A Common Stock (2984)	Direct
2011-08-02	Class B Common Stock	$0.00	C	2984	Disposed	2029-12-31	Class A Common Stock (2984)	Direct

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, which is listed on the NASDAQ stock market under the symbol "FIBK". The 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. All stock and stock option awards made prior to the recapitalization are exercisable for shares of Class B common stock.