FIRST INTERSTATE BANCSYSTEM INC — Director's Dealing 2011

Jun 1, 2011

SEC Form 3 — Initial Statement of Beneficial Ownership

Issuer: FIRST INTERSTATE BANCSYSTEM INC (FIBK)
CIK: 0000860413
Period of Report: 2011-05-24

Reporting Person: Heyneman Charles M (Director)

Holdings (Non-Derivative)

Security	Shares	Ownership
Class A Common Stock	924	Direct
Class A Common Stock	3492	Indirect

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Class B Common Stock	$0.00	2029-12-31	Class A Common Stock (127415)		Indirect
Class B Common Stock	$0.00	2029-12-31	Class A Common Stock (5098)		Indirect
Class B Common Stock	$0.00	2029-12-31	Class A Common Stock (5098)		Indirect
Class B Common Stock	$0.00	2029-12-31	Class A Common Stock (9000)		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 intial public offering of the Class A shares commenced March 23, 2010. 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.

F2: The reporting person disclaims beneficial ownership of these securities, and this report shall not be deemed an admission that the reporting person is the beneficial owner of the securities for purposes of Section 16 or for any other purpose.