FIRST INTERSTATE BANCSYSTEM INC — Director's Dealing 2012

May 9, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: FIRST INTERSTATE BANCSYSTEM INC (FIBK)
CIK: 0000860413
Period of Report: 2012-05-07

Reporting Person: Heyneman Charles M (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-05-07	Class A Common Stock	C	18000	$0.00	Acquired	18000	Indirect

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-05-07	Class B Common Stock	$0.00	C	18000	Disposed	2029-12-31	Class A Common Stock (18000)	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Class A Common Stock	924	Direct
Class A Common Stock	3492	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, 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.