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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): July 27, 2020
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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))
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 7.01 Regulation FD Disclosure.
First Interstate BancSystem, Inc. (the “Company”), parent of First Interstate Bank, posted a new corporate presentation (the “Presentation”) on the News and Events page of the Company’s website at https://www.fibk.com. The Presentation, which is furnished with this Current Report as Exhibit 99.1 and incorporated herein by reference, updates previously filed presentations and provides an overview of the Company and its operations.
This Form 8-K and the information attached below 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 (“Securities Act”), or the Exchange Act, except as expressly set forth by specific reference in such a filing. The furnishing of the information in this 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. The information in the materials is presented as of July 27, 2020, and the Company does not assume any obligation to update such information in the future.
Item 9.01 Financial Statements and Exhibits.

(d) | Exhibit Number |  | Description
| 99.1 |  | Presentation
| 104 |  | Cover Page Interactive Data File (embedded within Inline XBRL document).

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: July 27, 2020

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