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): May 11, 2020

FIRST INTERSTATE BANCSYSTEM, INC.

(Exact name of registrant as specified in its charter)

001-34653

81-0331430

(State or other jurisdiction

of incorporation)

(Commission

File Number)

(IRS Employer

Identification No.)

401 North 31st Street, Billings, MT	59116-0918
(Address of principal executive offices)	(zip code)

Registrant’s telephone number, including area code:

(406)255-5390

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))

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

Title of each class		Trading Symbol		Name of each 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. ¨

Item 7.01.

Regulation FD Disclosure.

On May 11, 2020, First Interstate BancSystem, Inc. (the “Company”) issued a press release announcing that, subject to market and other conditions, it plans to offer subordinated notes due 2030 (the “Notes”). The press release is furnished with this Current Report as Exhibit 99.1 and is incorporated herein by reference.

This Current Report and the information included below and furnished as exhibits hereto shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (“Exchange Act”), nor shall it be incorporated by reference into a filing under the Securities Act of 1933, as amended, or the Exchange Act, except as expressly set forth by specific reference in such a filing. The furnishing of the information in this Current Report is not intended to, and does not, constitute a determination or admission by the Company that the information in this report is material or complete, or that investors should consider this information before making an investment decision with respect to any security of the Company or any of its affiliates.

Item 9.01

Financial Statements and Exhibits.

Exhibit No.		Description of Exhibit

	99.1	Press Release
	104	Cover Page Interactive Data File (embedded within Inline XBRL document).

SIGNATURES

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

Dated: May 11, 2020

	FIRST INTERSTATE BANCSYSTEM, Inc.

	By:	/s/ KEVIN P. RILEY
		Kevin P. Riley
		President and Chief Executive Officer