FIRST INTERSTATE BANCSYSTEM INC — Director's Dealing 2010

Mar 16, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: FIRST INTERSTATE BANCSYSTEM INC (N/A)
CIK: 0000860413
Period of Report: 2010-03-16

Reporting Person: SCOTT THOMAS W (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-03-16	Common Stock	D	7672	$60.00	Disposed	675660	Direct
2010-03-16	Common Stock	X	9900	$42.00	Acquired	685560	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-03-16	Stock Options	$42.00	X	9158	Disposed	2010-03-16	Common Stock (9158)	Direct

Footnotes

F1: Includes 6,930 mature shares tendered in partial payment of option exercise price and 742 shares redeemed for payment of taxes.