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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, 2024
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)
________________________________________________________________________________________________________ 
Delaware81-0331430
(State or other jurisdiction of
incorporation or organization)
(IRS Employer
Identification No.)
401 North 31st Street
Billings,MT59101
(Address of principal executive offices)(Zip Code)
Registrant’s telephone number, including area code: (406) 255-5311
N/A
(Former name, former address and former fiscal year, if changed since last report)
_________________________________________________________________________________________________ 

Securities registered pursuant to Section 12(b) of the Act:
Title of each classTrading Symbol(s)Name of each exchange on which registered
Common Stock, $0.00001 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, 2024 – Common stock
104,548,149 



Quarterly Report on Form 10-Q
FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES
Index
June 30, 2024
  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,
2024
December 31,
2023
Assets
Cash and due from banks$390.2 $378.2 
Interest-bearing deposits in banks568.2 199.7 
Federal funds sold0.1 0.1 
Total cash and cash equivalents958.5 578.0 
Investment securities:
Available-for-sale, at fair value5,603.1 5,841.5 
Held-to-maturity (estimated fair values of $2,440.4 at June 30, 2024 and $2,874.0 at December 31, 2023)
2,798.5 3,207.9 
Total investment securities8,401.6 9,049.4 
FHLB and FRB stock, at cost182.3 223.2 
Loans held for sale ($3.1 and $0.5 of which is recorded at fair value at June 30, 2024 December 31, 2023)
22.3 47.4 
Loans held for investment, net of deferred fees and costs18,235.0 18,279.6 
Allowance for credit losses(232.8)(227.7)
Net loans held for investment18,002.2 18,051.9 
Goodwill1,100.9 1,100.9 
Company-owned life insurance507.6 502.4 
Premises and equipment, net of accumulated depreciation436.5 444.3 
Other intangibles, net of accumulated amortization74.0 81.4 
Accrued interest receivable126.4 129.1 
Mortgage servicing rights, net of accumulated amortization27.0 28.3 
Other real estate owned6.7 16.5 
Deferred tax asset, net154.5 150.0 
Other assets289.0 268.4 
Total assets$30,289.5 $30,671.2 
Liabilities and Stockholders’ Equity
Deposits:
Non-interest bearing$6,174.0 $6,029.6 
Interest bearing16,696.7 17,293.5 
Total deposits22,870.7 23,323.1 
Securities sold under repurchase agreements741.8 782.7 
Accounts payable and accrued expenses398.3 380.4 
Accrued interest payable71.1 52.2 
Other borrowed funds2,430.0 2,603.0 
Long-term debt383.4 120.8 
Allowance for credit losses on off-balance sheet credit exposures5.8 18.4 
Subordinated debentures held by subsidiary trusts163.1 163.1 
Total liabilities27,064.2 27,443.7 
Stockholders’ equity:
Preferred stock, no par value; 100,000 shares authorized; none issued and outstanding
  
Common stock and additional paid-in-capital, $0.00001 par value; 150,000,000 shares authorized; 104,560,618 and 103,941,626 shares were issued and outstanding at June 30, 2024 and December 31, 2023
2,453.9 2,448.9 
Retained earnings1,156.9 1,135.1 
Accumulated other comprehensive loss, net(385.5)(356.5)
Total stockholders’ equity3,225.3 3,227.5 
Total liabilities and stockholders’ equity$30,289.5 $30,671.2 
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,
 2024202320242023
Interest income:
Interest and fees on loans$252.8 $241.6 $504.9 $477.2 
Interest and dividends on investment securities:
Taxable62.3 66.1 126.8 138.3 
Exempt from federal taxes0.7 0.8 1.4 1.7 
Interest and dividends on FHLB and FRB stock3.3 3.4 6.6 6.4 
Interest on deposits in banks4.9 5.4 9.0 9.6 
Total interest income324.0 317.3 648.7 633.2 
Interest expense:
Interest on deposits80.9 53.6 160.0 93.9 
Interest on securities sold under repurchase agreements1.9 1.5 4.2 2.6 
Interest on other borrowed funds31.8 39.3 67.4 70.5 
Interest on long-term debt4.4 1.4 8.7 2.9 
Interest on subordinated debentures held by subsidiary trusts3.3 3.1 6.6 6.0 
Total interest expense122.3 98.9 246.9 175.9 
Net interest income201.7 218.4 401.8 457.3 
Provision for credit losses9.0 11.7 14.3 26.9 
Net interest income after provision for credit losses192.7 206.7 387.5 430.4 
Non-interest income:
Payment services revenues18.6 20.1 37.0 38.8 
Mortgage banking revenues1.7 2.6 3.4 4.9 
Wealth management revenues9.4 8.8 18.6 17.8 
Service charges on deposit accounts6.4 5.8 12.4 11.0 
Other service charges, commissions, and fees2.1 2.4 4.3 4.8 
Investment securities losses, net (0.1) (23.5)
Other income4.4 4.5 9.0 6.7 
Total non-interest income42.6 44.1 84.7 60.5 
Non-interest expense:
Salaries and wages66.3 68.1 131.5 133.7 
Employee benefits16.9 19.3 36.2 42.1 
Outsourced technology services14.0 15.3 27.6 30.0 
Occupancy, net11.7 11.7 24.0 24.2 
Furniture and equipment5.2 5.6 10.2 11.5 
OREO expense, net of income2.0 0.6 4.0 0.8 
Professional fees5.1 5.3 11.9 9.8 
FDIC insurance premiums6.6 4.7 14.0 10.4 
Other intangibles amortization3.7 3.9 7.4 7.9 
Other expenses25.4 29.4 50.3 59.3 
Total non-interest expense156.9 163.9 317.1 329.7 
Income before income tax78.4 86.9 155.1 161.2 
Provision for income tax18.4 19.9 36.7 37.9 
Net income$60.0 $67.0 $118.4 $123.3 
Earnings per common share (Basic)$0.58 $0.65 $1.15 $1.19 
Earnings per common share (Diluted)$0.58 $0.65 $1.15 $1.19 
See accompanying notes to unaudited consolidated financial statements.
4

FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
(In millions)
(Unaudited)
 Three Months Ended June 30,Six Months Ended June 30,
 2024202320242023
Net income$60.0 $67.0 $118.4 $123.3 
Other comprehensive income (loss), before tax:
Investment securities available for sale:
Change in net unrealized gains (losses) during the period2.5 (57.5)(23.9)20.7 
Reclassification adjustment for net losses included in income 0.1  23.5 
Reclassification adjustment for securities transferred from held-to-maturity to available-for-sale   (7.2)
Net change in unamortized losses on available-for-sale investment securities transferred into held-to-maturity(0.1)(0.4)(0.3)(0.8)
Cash flow hedges:
Change in unrealized gains on derivatives(5.1)(23.6)(22.5)(14.1)
Reclassification adjustment for derivatives net losses included in income4.6 1.5 8.1 2.0 
Other comprehensive income (loss), before tax1.9 (79.9)(38.6)24.1 
Deferred tax (expense) benefit related to other comprehensive (loss) income(0.5)20.0 9.6 (6.0)
Other comprehensive income (loss), net of tax1.4 (59.9)(29.0)18.1 
Comprehensive income, net of tax$61.4 $7.1 $89.4 $141.4 
See accompanying notes to unaudited consolidated financial statements.

5

FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENTS 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
loss
Total
stockholders’
equity
Balance at March 31, 2024$2,450.7 $1,145.9 $(386.9)$3,209.7 
Net income 60.0  60.0 
Other comprehensive loss, net of tax expense  1.4 1.4 
Common stock transactions:
1,758 common shares purchased and retired
    
52,735 non-vested common shares issued
    
61,982 non-vested common shares forfeited or canceled
    
Stock-based compensation expense3.2   3.2 
Common stock cash dividends declared ($0.47 per share)
 (49.0) (49.0)
Balance at June 30, 2024$2,453.9 $1,156.9 $(385.5)$3,225.3 
Common
stock
Retained
earnings
Accumulated
other
comprehensive
loss
Total
stockholders’
equity
Balance at March 31, 2023$2,478.7 $1,080.7 $(399.1)$3,160.3 
Net income 67.0  67.0 
Other comprehensive loss, net of tax expense  (59.9)(59.9)
Common stock transactions:
348 common shares purchased and retired
    
660,048 non-vested common shares issued
    
21,035 non-vested common shares forfeited or canceled
    
Stock-based compensation expense2.7   2.7 
Common stock cash dividends declared ($0.47 per share)
 (48.9) (48.9)
Balance at June 30, 2023$2,481.4 $1,098.8 $(459.0)$3,121.2 
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 loss
Total
stockholders’
equity
Balance at December 31, 2023$2,448.9 $1,135.1 $(356.5)$3,227.5 
Cumulative change related to the adoption of ASU 2023-02 1.2  1.2 
Adjusted balance at January 1, 20242,448.9 1,136.3 (356.5)3,228.7 
Net income 118.4  118.4 
Other comprehensive loss, net of tax expense  (29.0)(29.0)
Common stock transactions:
45,448 common shares purchased and retired
(1.1)  (1.1)
738,098 non-vested common shares issued
    
73,658 non-vested common shares forfeited or canceled
    
Stock-based compensation expense6.1   6.1 
Common cash dividends declared ($0.94 per share)
 (97.8) (97.8)
Balance at June 30, 2024$2,453.9 $1,156.9 $(385.5)$3,225.3 
Common
stock
Retained
earnings
Accumulated
other
comprehensive
loss
Total
stockholders’
equity
Balance at December 31, 2022$2,478.2 $1,072.7 $(477.1)$3,073.8 
Net income 123.3  123.3 
Other comprehensive income, net of tax expense  18.1 18.1 
Common stock transactions:
55,428 common shares purchased and retired
(1.8)  (1.8)
670,911 non-vested common shares issued
    
36,823 non-vested common shares forfeited or canceled
    
Stock-based compensation expense5.0   5.0 
Common cash dividends declared ($0.94 per share)
 (97.2) (97.2)
Balance at June 30, 2023$2,481.4 $1,098.8 $(459.0)$3,121.2 
See accompanying notes to unaudited consolidated f