UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington D.C. 20549

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FORM 8-K

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CURRENT REPORT

Pursuant to Section 13 or 15(d) of the

Securities Exchange Act of 1934

Date of report (date of earliest event reported): October 23, 2019

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FIRST INTERSTATE BANCSYSTEM, INC.

(Exact name of registrant as specified in its charter)

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Montana		001-34653	81-0331430
(State or other jurisdiction of incorporation or organization)		(Commission File No.)	(IRS Employer Identification No.)
401 North 31st Street
Billings,	MT		59116-0918
(Address of principal executive offices)			(zip code)

	(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):

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

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

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

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

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Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol(s)	Name of exchange on which registered
Class A common stock, no par value	FIBK	NASDAQ

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

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Item 2.02 Results of Operations and Financial Condition.

On October 23, 2019, First Interstate BancSystem, Inc. (the “Registrant”) issued a press release regarding its financial results for the quarter ended September 30, 2019. A copy of the press release is furnished herewith as Exhibit 99.1 and is incorporated by reference herein. Neither the information incorporated by reference in this report nor the press release shall be deemed as “filed” for purposes of Section 18 of the Securities Exchange Act of 1934 or incorporated by reference into any registration statement or other document filed pursuant to the Securities Act of 1933 or the Securities Exchange Act of 1934.

Item 9.01 Financial Statements and Exhibits.

(d)	Exhibit Number	Description
	99.1	Press Release dated October 23, 2019.

SIGNATURES

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.

Date: October 23, 2019

FIRST INTERSTATE BANCSYSTEM, INC.
By:	/s/ KEVIN P. RILEY
	Kevin P. Riley
	President and Chief Executive Officer