UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington D.C. 20549

FORM 8-K
CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of report (date of earliest event reported): March 22, 2007

FIRST INTERSTATE BANCSYSTEM, INC.

(Exact name of registrant as specified in its charter)

Montana		33-64304		81-0331430
(State or other jurisdiction of incorporation or organization)		(Commission File No.)		(IRS Employer Identification No.)
401 North 31st Street, Billings, MT
(Address of principal executive offices)
(406) 255-5390
(Registrant’s telephone number, including area code)
Not Applicable
(Former name or former address, if changed since last report)

     Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

o Written communication pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

o Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

o Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

o Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

 

 

Item 7.01 Regulation FD Disclosure.

     The information furnished under Item 8.01 is also being furnished under this Item 7.01.

Item 8.01 Other Events.

     On March 22, 2007, the Board of Directors of First Interstate BancSystem, Inc. passed a resolution to increase quarterly dividends to common shareholders to $0.65 per common share until further notice. Previously, dividends to common shareholders were $0.61 per common share each calendar quarter.

SIGNATURE

     Pursuant to the requirements of the Securities and Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Dated: March 26, 2007