FIRST INTERSTATE BANCSYSTEM INC — Director's Dealing 2012

May 23, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: FIRST INTERSTATE BANCSYSTEM INC (FIBK)
CIK: 0000860413
Period of Report: 2012-05-23

Reporting Person: SULLIVAN MICHAEL J/CO (Director)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-05-23	Stock Options	$13.60	A	5801	Acquired	2022-05-23	Class A Common Stock (5801)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Class A Common Stock	924	Direct

Footnotes

F1: Issued in lieu of cash payment for annual Board of Directors retainer fee. 100% vested on date of grant.