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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): May 24, 2023
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FIRST INTERSTATE BANCSYSTEM, INC.
(Exact name of registrant as specified in its charter)
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Delaware | 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 |  |  | 59101
(Address of principal executive offices) |  |  | (zip code)

| (406) | 255-5311 |
(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
Common stock, $0.00001 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 May 24, 2023, the Registrant released its shareholder presentation associated with its annual meeting of shareholders (the “Presentation”) on the News and Events page on the Registrant’s Investor Relations website at https://www.fibk.com. The Presentation is being furnished under this Item 2.02 solely because it includes an additional presentation not previously provided by the Registrant of adjusted return on average assets for each of the completed fiscal years in the five years ended December 31, 2022. These financial measures are being furnished as additional information only and do not modify or change in any respect the previously reported financial results of the Registrant. The Presentation is furnished with this Current Report as Exhibit 99.1. Neither the information included or incorporated by reference under this Item 2.02, nor the Presentation furnished herewith, shall be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934 (the “Exchange Act”) or incorporated by reference into any registration statement or other document filed pursuant to the Securities Act of 1933 or the Exchange Act, except as expressly set forth by specific reference in such filing.
Item 9.01 Financial Statements and Exhibits.
(d) Exhibits.

(d) | Exhibit No. |  | Exhibit Description
| 99.1** |  | Presentation
| 104 |  | Cover Page Interactive Data File (formatted as inline XBRL document)
**Furnished herewith

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.
Date: May 25, 2023

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