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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
___________________________________________________________________________________________________________________________________________________ 
FORM 10-Q
_____________________________________________________________________________________________________________________________________________________ 

    Quarterly report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
For the quarterly period ended June 30, 2022
OR
     Transition report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
For the transition period from                   to                   
COMMISSION FILE NUMBER 001-34653
________________________________________________________________________________________________________ 
FIRST INTERSTATE BANCSYSTEM, INC.
(Exact name of registrant as specified in its charter)
________________________________________________________________________________________________________ 
Montana81-0331430
(State or other jurisdiction of
incorporation or organization)
(IRS Employer
Identification No.)
401 North 31st Street
Billings,MT59116-0918
(Address of principal executive offices)(Zip Code)
Registrant’s telephone number, including area code: (406) 255-5311
_________________________________________________________________________________________________ 

Securities registered pursuant to Section 12(b) of the Act:
Title of each classTrading Symbol(s)Name of each exchange on which registered
Class A common stock, no par valueFIBKNASDAQ
Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.     Yes      No  
Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files.)     Yes      No  
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and “emerging growth company” in Rule 12b-2 of the Exchange Act.
Large accelerated filer  Accelerated filer
Non-accelerated filerSmaller reporting company
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.
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).  Yes   No  
Indicate the number of shares outstanding of each of the registrant’s classes of common stock, as of the latest practicable date:
July 31, 2022 – Class A common stock106,820,008 



Quarterly Report on Form 10-Q
FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES
Index
June 30, 2022
  Page Nos.
Item 1.
Item 2.
Item 3.
Item 4.
Item 1.
Item 1A.
Item 2.
Item 3.
Item 4.
Item 5.
Item 6.



















2

FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES
CONSOLIDATED BALANCE SHEETS
(In millions, except share data)
(Unaudited)
June 30,
2022
December 31,
2021
Assets
Cash and due from banks$425.3 $168.6 
Interest bearing deposits in banks633.9 2,176.1 
Federal funds sold0.1 0.1 
Total cash and cash equivalents1,059.3 2,344.8 
Securities purchased under agreement to resell202.2  
Investment securities:
Available-for-sale, at estimated fair value7,741.1 4,820.5 
Held-to-maturity, net of allowance for credit losses of $1.6 and $0 at June 30, 2022 and December 31, 2021 (estimated fair values of $2,860.5 and $1,667.5 at June 30, 2022 and December 31, 2021)
3,130.0 1,687.6 
Total investment securities10,871.1 6,508.1 
Loans held for sale127.4 30.1 
Loans held for investment, net of deferred fees and costs17,162.5 9,331.7 
Allowance for credit losses220.4 122.3 
Net loans held for investment16,942.1 9,209.4 
Goodwill1,099.8 621.6 
Company-owned life insurance492.8 301.5 
Premises and equipment, net of accumulated depreciation442.7 299.6 
Other intangibles, net of accumulated amortization105.1 41.3 
Accrued interest receivable90.6 47.4 
Mortgage servicing rights, net of accumulated amortization and impairment reserve32.1 28.2 
Other real estate owned16.8 2.0 
Deferred tax asset, net176.9  
Other assets402.9 237.9 
Total assets$32,061.8 $19,671.9 
Liabilities and Stockholders’ Equity
Deposits:
Non-interest bearing$8,295.4 $5,568.3 
Interest bearing18,568.4 10,701.3 
Total deposits26,863.8 16,269.6 
Securities sold under repurchase agreements1,234.7 1,051.1 
Accounts payable and accrued expenses397.5 148.4 
Accrued interest payable4.3 3.7 
Deferred tax liability, net 9.3 
Long-term debt120.4 112.4 
Allowance for credit losses on off-balance sheet credit exposures6.1 3.8 
Subordinated debentures held by subsidiary trusts163.1 87.0 
Total liabilities28,789.9 17,685.3 
Stockholders’ equity:
Preferred stock, no par value; 100,000 shares authorized; none issued and outstanding
  
Common stock, no par value; 150,000,000 and 100,000,000 shares authorized at June 30, 2022 and December 31, 2021; 107,758,038 shares and 62,200,456 shares issued and outstanding, respectively
2,607.9 945.0 
Retained earnings993.8 1,052.6 
Accumulated other comprehensive loss, net(329.8)(11.0)
Total stockholders’ equity3,271.9 1,986.6 
Total liabilities and stockholders’ equity$32,061.8 $19,671.9 
See accompanying notes to unaudited consolidated financial statements.
3

FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF INCOME
(In millions, except per share data)
(Unaudited)
 Three Months Ended June 30,Six Months Ended June 30,
 2022202120222021
Interest income:
Interest and fees on loans$191.7 $105.4 $343.4 $213.2 
Interest and dividends on investment securities:
Taxable48.8 15.8 78.1 31.6 
Exempt from federal taxes1.4 1.4 2.7 2.8 
Interest on deposits in banks3.4 0.7 5.1 1.0 
Total interest income245.3 123.3 429.3 248.6 
Interest expense:
Interest on deposits4.3 2.2 7.3 4.5 
Interest on securities sold under repurchase agreements0.3 0.1 0.6 0.2 
Interest on long-term debt1.4 1.5 3.1 3.0 
Interest on subordinated debentures held by subsidiary trusts1.4 0.7 2.4 1.4 
Total interest expense7.4 4.5 13.4 9.1 
Net interest income237.9 118.8 415.9 239.5 
Provision for (reversal of) credit losses(1.7) 59.6 (5.1)
Net interest income after provision for (reversal of) credit losses239.6 118.8 356.3 244.6 
Non-interest income:
Payment services revenues19.5 11.4 34.3 21.6 
Mortgage banking revenues5.0 9.6 13.4 21.2 
Wealth management revenues9.3 6.3 17.4 12.6 
Service charges on deposit accounts6.3 3.9 14.0 7.7 
Other service charges, commissions, and fees3.6 1.6 7.9 3.7 
Investment securities losses, net(0.1)(0.1)(0.2)(0.1)
Other income7.4 2.6 13.4 6.7 
Total non-interest income51.0 35.3 100.2 73.4 
Non-interest expense:
Salaries and wages74.8 41.6 134.8 80.6 
Employee benefits19.4 14.7 40.6 30.8 
Outsourced technology services12.8 8.4 24.1 16.5 
Occupancy, net11.2 7.1 21.2 14.4 
Furniture and equipment5.8 4.1 11.2 8.5 
OREO expense, net of income  0.1 (0.1)
Professional fees5.5 3.2 9.4 6.6 
FDIC insurance premiums2.8 1.5 6.1 3.1 
Other intangibles amortization4.1 2.5 7.7 5.0 
Other expenses28.1 15.9 51.3 32.0 
Acquisition related expenses45.8  111.0  
Total non-interest expense210.3 99.0 417.5 197.4 
Income before income tax80.3 55.1 39.0 120.6 
Provision for income tax16.2 12.6 8.3 26.7 
Net income$64.1 $42.5 $30.7 $93.9 
Earnings per common share (Basic)$0.59 $0.69 $0.30 $1.52 
Earnings per common share (Diluted)$0.59 $0.69 $0.30 $1.52 
Weighted average common shares outstanding (Basic)109,106,891 61,657,593 101,025,926 61,624,917 
Weighted average common shares outstanding (Diluted)109,131,718 61,727,821 101,076,331 61,723,142 
See accompanying notes to unaudited consolidated financial statements.
4

FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME
(In millions)
(Unaudited)
 Three Months Ended June 30,Six Months Ended June 30,
 2022202120222021
Net income$64.1 $42.5 $30.7 $93.9 
Other comprehensive (loss) income, before tax:
Investment securities available-for sale:
Change in net unrealized loss during period(161.6)(0.8)(414.2)(67.6)
Reclassification adjustment for net loss included in income0.1 0.1 0.2 0.1 
Reclassification adjustment for securities transferred from held-to-maturity to available-for-sale  0.2  
Net change in unamortized (losses) gains on available-for-sale securities transferred into held-to-maturity(0.9)24.8 (23.9)24.8 
Change in unrealized (gain) loss on derivatives(15.0)(0.8)6.3 (0.9)
Other comprehensive (loss) income, before tax(177.4)23.3 (431.4)(43.6)
Changes in deferred taxes related to other comprehensive (loss) income49.6 (5.9)112.6 11.1 
Other comprehensive (loss) income, net of tax(127.8)17.4 (318.8)(32.5)
Comprehensive (loss) income, net of tax$(63.7)$59.9 $(288.1)$61.4 
See accompanying notes to unaudited consolidated financial statements.

5

FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS’ EQUITY
(In millions, except share and per share data)
(Unaudited)
Three Months Ended June 30,
Common
stock
Retained
earnings
Accumulated
other
comprehensive
income (loss)
Total
stockholders’
equity
Balance at March 31, 2022$2,668.6 $974.5 $(202.0)$3,441.1 
Net income 64.1  64.1 
Other comprehensive loss, net of tax expense  (127.8)(127.8)
Common stock transactions:
1,722,044 common shares purchased and retired
(64.5)  (64.5)
26,266 common shares issued
    
2,626 non-vested common shares issued
    
51,820 non-vested common shares forfeited or canceled
    
Stock-based compensation expense3.8   3.8 
Common stock cash dividends declared ($0.41 per share)
 (44.8) (44.8)
Balance at June 30, 2022$2,607.9 $993.8 $(329.8)$3,271.9 
Common
stock
Retained
earnings
Accumulated
other
comprehensive
income (loss)
Total
stockholders’
equity
Balance at March 31, 2021$938.5 $988.2 $6.7 $1,933.4 
Net income 42.5  42.5 
Other comprehensive income, net of tax expense  17.4 17.4 
Common stock transactions:
284 common shares purchased and retired
    
18,477 common shares issued
    
8,305 non-vested common shares forfeited or canceled
    
Stock-based compensation expense3.1   3.1 
Common stock cash dividends declared ($0.41 per share)
 (25.5) (25.5)
Balance at June 30, 2021$941.6 $1,005.2 $24.1 $1,970.9 
See accompanying notes to unaudited consolidated financial statements.

6

FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS’ EQUITY (continued)
(In millions, except share and per share data)
(Unaudited)
Six Months Ended June 30,
Common
stock
Retained
earnings
Accumulated other
comprehensive
income (loss)
Total
stockholders’
equity
Balance at December 31, 2021$945.0 $1,052.6 $(11.0)$1,986.6 
Net income 30.7  30.7 
Other comprehensive loss, net of tax expense  (318.8)(318.8)
Common stock transactions:
1,759,742 common shares purchased and retired
(65.9)  (65.9)