First Interstate BancSystem
Annual Report 2020

Plain-text annual report

2020 Annual Report Bring on the day. We have the commitment to keep our communities ready for whatever the day ahead may bring. No matter what tomorrow has in store, we are here to keep the everyday running right. Our Mission, Vision, and Values The enduring nature of our Company’s Mission, Vision, and Values give weight and purpose to each of our interactions with colleagues, clients, and communities. Mission The focus of every action we take each day. We help people and their money work better together. Vision Our North Star and ultimate goal. To be the most relevant everyday experience our clients have with their money. Values The principles we live by and hold ourselves accountable to along the way. ƒ People First, Always ƒ Seek Greatness ƒ Integrity ƒ Celebrate Success ƒ Commitment to Community 2020 Annual Report | A LETTER TO SHAREHOLDERS To Our Shareholders: People first, always. Seek greatness. Integrity. Celebrate TAKING CARE OF OUR EMPLOYEES AND CLIENTS success. Commitment to community. These five core values have been the guiding force of First Interstate Bank since its inception over 50 years ago. And these values have provided guidance and stability, fortifying our resilience as we serve our employees, clients, communities, and shareholders. POSITIONED FOR GROWTH AND A PIVOT Critical adjustments to our benefit plans helped ensure employees had ample resources to address personal needs and circumstances. First Interstate instituted special condition time off, providing employees with continued pay — without counting against vacation or sick leave — to care for themselves or loved ones sick with COVID-19. Employees impacted by daycare We entered 2020 on a positive note when in March, like closures or adult care limitations while stay at home other institutions, First Interstate was forced to pivot orders were in place were also able to use special on the sudden impact of a global pandemic. To protect condition time off. For those unable to work from the health and safety of our people and our clients, we home, First Interstate provided personal protective seamlessly moved 70% of our staff to work-from-home equipment as well as temperature screenings, increased arrangements, adapted hours of operation, enacted facilities cleanings, and workplace hygiene guidance. health and safety protocols, and even closed branch lobbies as needed to ensure the safety of all. Yet we were still able to provide our complete financial services to clients thanks to our comprehensive digital strategy. First Interstate’s foresight in building our technological infrastructure proved beneficial, as clients were able to safely conduct their banking through online and mobile channels as well as through virtual meetings and online applications. During 2020, utilization of our digital channels was up nearly 36% year-over-year. Recognizing the economic impacts of COVID-19, we worked with clients to offer financial assistance through loan deferrals and fee waivers. Additionally, we provided small businesses with access to financial relief through the federal Paycheck Protection Program (PPP), instituting efficient processes to fund loans as quickly as possible. In the first wave of funding, we secured approximately $1.2 billion in loans for approximately 11,700 clients. In the second wave of PPP funding, we attracted a contingent of new clients who could not access the same level of service and responsiveness from their own banks. B | 2020 Annual Report SUPPORTING COMMUNITIES IN NEED During 2020, we increased quarterly dividends by 22.6%, Every year, First Interstate donates 2% of net income before taxes to community organizations, and the pandemic did not dampen this longstanding commitment. At the onset of COVID-19, we recognized the heightened demand that would befall area food banks and offered financial support to organizations addressing food insecurity. Throughout the year, we supported communities fighting wildfires, in addition to paying a special dividend of $0.60 per share, providing a high return to our shareholders. Confident in the strength of the Company, we also announced a 7.9% increase in dividends in the first quarter of 2021, which equates to an annualized yield of 4.32% based on the average closing price of our stock during the fourth quarter of 2020. providing financial resources to aid victims forced to As we look back on the past year, we are overcome with relocate and rebuild. We championed Native American gratitude to the people who have made our success Community Development, and we continued to impact our possible. Although we have grown to 150 offices across communities by supporting more than 270 nonprofits safely six Western states, our ongoing commitment to the places and effectively on our annual Volunteer Day in September. we call home has demonstrated that we are a community DISCIPLINE LEADS TO RESILIENCE AND OPPORTUNITY together and are optimistic about brighter days as we bank at heart. We have come through a challenging year First Interstate remained financially resilient in 2020, head into 2021. staying true to our strategic roadmap through continued Sincerely, focus on our diverse business mix and a consistent approach to loan underwriting and quality. Despite the challenges of federal reserve rate cuts and a pandemic, we delivered another strong year of financial performance. We had net income of $161.2 million, or $2.53 per common share. On a pre-tax, pre-provision basis, income was 6.9% higher than comparable 2019 earnings levels. Kevin P. Riley President & CEO First Interstate BancSystem, Inc. 2020 Annual Report | C A Year Unlike Any Other When we rang in 2020, no one expected a global pandemic. For First Interstate, it was an opportunity to show our resiliency and agility as we adapted quickly to the new environment. We placed an emphasis on the safety of our people, our clients, and our communities. At the same time, we quickly adjusted how we “showed up” to meet the needs of our clients and communities. As a result, we experienced dramatic growth in our Company. ƒ Compared to 2019, total assets increased over $3 billion, or 21%, to $17.6 billion as of December 31, 2020 ƒ We facilitated approximately 11,700 Paycheck Protection Program (PPP) loans for approximately $1.2 billion, helping our clients and communities during a difficult time ƒ Total deposits grew almost 22% compared to 2019, as our clients considered us a safe haven for their hard-earned dollars ƒ Book value per common share increased to $31.56 as of December 31, 2020, compared to $30.87 as of December 31, 2019 ƒ In 2020, we increased dividends paid by 61% to $2.00 per share — a sign of our financial strength and our commitment to our shareholders D | 2020 Annual Report Financially Resilient Despite its challenges, 2020 proved to be another year of strong financial performance for First Interstate. This is a direct reflection of our commitment to excellence and the strength of our community banking model. Total Shareholder Return (TSR) FIBK: TOTAL RETURN (12/31/2015 THROUGH 12/31/2020) FIBK KBW BANK INDEX S&P FINANCIALS INDEX $200 $180 $160 $140 $120 $100 $80 $60 $40 $20 $0 Dec 15 Apr 16 Aug 16 Dec 16 Apr 17 Aug 17 Dec 17 Apr 18 Aug 18 Dec 18 Apr 19 Aug 19 Dec 19 Apr 20 Aug 20 Dec 20 1-Year 3-Year 5-Year FIBK 3% 14% 67% S&P Financials Index KBW Bank Index -2% 13% 69% -10% 0% 53% The graph above shows our TSR expressed as the cumulative return to shareholders for a five-year period. As illustrated, a $100 investment in First Interstate BancSystem, Inc. common stock on December 31, 2015 would be valued at $167 as of December 31, 2020, which outperformed the KBW Bank Index. 2020 Annual Report | E Taking Care of Our Communities Our commitment to community comes alive in philanthropy, volunteerism, leadership, community development, sustainable practices, financial education, and community relations. These are demonstrations of our Company’s Mission, Vision, Values, and strategic goals at work. OUR CONTRIBUTIONS IN 2020 AT-A-GLANCE: ƒ Approximately $5 million donated to over 950 nonprofits across our footprint, including approximately $2 million donated directly to feeding programs and approximately $1 million toward COVID-19 relief ƒ In addition to a global pandemic, communities in our footprint endured a horrific fire season in 2020; First Interstate provided more than $100,000 in donations supporting both immediate assistance and long-term aid ƒ Nearly 66% of nonprofits focused on poverty and served low- to moderate-income individuals ƒ Employees volunteered 18,400 hours, with organizations receiving nearly $125,000 in Volunteer Matching from the First Interstate Foundation On September 9, First Interstate held its third annual Volunteer Day. Employees spent half the workday volunteering with local nonprofits, either in-person (when safe to do so), remotely, or virtually. In total, approximately 2,100 employees took part, tallying over 6,650 volunteer hours and benefitting more than 270 organizations across our footprint. Our 2021 Volunteer Day will be held on Wednesday, September 8. F | 2020 Annual Report Paycheck Protection Program 2020 was a year of resilience and dedication — not only from our employees, but also from the people we serve. Time and time again, community members rose above adversity to persevere, and First Interstate was privileged to be a part of it thanks to our role in the Paycheck Protection Program. 11.7K “There are so many unsung heroes working to help during these challenging times, and unfortunately I think the banking community is one of those groups that is sorely missed in getting the credit they deserve. We would never be in this place without your relentless help and support.” Chris Schultz, CEO, Voodoo Doughnut PPP Loans Facilitated $1.2B Total Amount Funded “[Our PPP] loan has helped offset our $180,000 monthly payroll and allowed us to keep over 100 employees employed since reopening in May [2020]. These funds also went a long way to offset our large monthly rent and utility bills that combined amount to approximately $25,000. Working with our banking team at First Interstate Bank was terrific and helped ease a very stressful process. They were there for us every step of the way, working tirelessly on our behalf. We are so grateful to have a strong relationship with First Interstate Bank.” Mark Taché, Founder & Partner, Montana Ale Works 2020 Annual Report | G Our Four Strategic Pillars Our Company’s Mission is supported by four key pillars that fuel, organize, and align internal strategies for business success. We believe engaged employees produce happy clients, which in turn support their communities, and lead to growth for our Company. These pillars guide Company operations, drive our commitment to the communities we serve, and ultimately provide long-term shareholder value. OUR PEOPLE, OUR PRIORITY RELENTLESS CLIENT FOCUS FUTURE-READY, TODAY FINANCIAL VITALITY H | 2020 Annual Report Confidently Forward We are proud of our Company and believe we have built a solid foundation — ready and willing for what’s to come. Financial detail of our performance for 2020 follows. We invite you to review it for additional perspective on our year. 2020 Annual Report | I Form 10-K DECEMBER 31, 2020 (Mark One) ☑ ☐ UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C. 20549 FORM 10-K Annual Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the fiscal year ended December 31, 2020 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) Montana (State or other jurisdiction of incorporation or organization) 81-0331430 (IRS Employer Identification No.) 401 North 31st Street Billings, MT (Address of principal executive offices) 59116 (zip code) (406) 255-5390 (Registrant’s telephone number, including area code) Securities registered pursuant to Section 12(b) of the Act: Title of each class Class A common stock, no par value Trading Symbol(s) Name of exchange on which registered FIBK NASDAQ Securities registered pursuant to Section 12(g) of the Act: Class B common stock (Title of class) Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. þ Yes o No Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. o Yes þ No 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. þ Yes o 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 (§223.405 of this chapter) during the preceding 12 months (or for such shorter period that registrant was required to submit such files). þ Yes o 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. (Check one): Large accelerated filer Smaller reporting company ☒ ☐ Accelerated filer Emerging growth company ☐ ☐ Non-accelerated filer ☐ 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. o Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report. ☑ Indicate by check mark if the registrant is a shell company (as defined in Rule 12b-2 of the Act.) ☐ Yes þ No The aggregate market value of voting and non-voting common equity held by non-affiliates, computed by reference to the price at which the common equity was last sold on the NASDAQ, as of the last business day of the registrant’s most recently completed second fiscal quarter was $1,379,587,569. Indicate the number of shares outstanding of each of the registrant’s classes of common stock as of January 31, 2021: Class A common stock Class B common stock 40,942,784 21,130,474 The registrant intends to file a definitive Proxy Statement for the Annual Meeting of Shareholders scheduled to be held May 26, 2021. The information required by Part III of this Form 10-K is incorporated by reference to such Proxy Statement. Documents Incorporated by Reference FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES Index December 31, 2020 PART I Page Nos. Item 1 Item 1A Item 1B Item 2 Item 3 Item 4 Item 5 Item 6 Item 7 Business Risk Factors Unresolved Staff Comments Properties Legal Proceedings Mine Safety Disclosure PART II Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities Selected Consolidated Financial Data Management’s Discussion and Analysis of Financial Condition and Results of Operations Item 7A Quantitative and Qualitative Disclosures About Market Risk Item 8 Item 9 Item 9A Item 9B Item 10 Item 11 Item 12 Item 13 Item 14 Item 15 Financial Statements and Supplementary Data Changes in and Disagreements with Accountants on Accounting and Financial Disclosure Controls and Procedures Other Information PART III Directors, Executive Officers and Corporate Governance. Executive Compensation Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters Certain Relationships and Related Transactions and Director Independence Principal Accountant Fees and Services PART IV Exhibits and Financial Statement Schedules Report of Independent Registered Public Accounting Firm Consolidated Balance Sheets Consolidated Statements of Income Consolidated Statements of Comprehensive Income Consolidated Statements of Stockholders' Equity Consolidated Statements of Cash Flows Notes to Consolidated Financial Statements Exhibits Item 16 Form 10-K Summary 3 14 30 30 30 30 30 32 33 61 63 63 64 66 66 66 66 66 66 66 67 69 70 71 72 73 75 133 134 Cautionary Note Regarding Forward-Looking Statements PART I When we refer to “we,” “our,” “us,” “First Interstate,” or the “Company” in this report, we mean First Interstate BancSystem, Inc. and our consolidated subsidiaries, including our wholly-owned subsidiary, First Interstate Bank, unless the context indicates that we refer only to the parent company, First Interstate BancSystem, Inc. When we refer to the “Bank” or “FIB” in this report, we mean only First Interstate Bank. This report contains “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended, and Rule 175 promulgated thereunder, and Section 21E of the Securities Exchange Act of 1934, as amended, and Rule 3b-6 promulgated thereunder, that involve inherent risks and uncertainties. Any statements about our plans, objectives, expectations, strategies, beliefs, or future performance or events constitute forward-looking statements. Such statements are identified by words or phrases such as “believes,” “expects,” “anticipates,” “plans,” “trends,” “objectives,” “continues,” or similar expressions, or future or conditional verbs such as “will,” “would,” “should,” “could,” “might,” “may,” or similar expressions. Forward-looking statements involve known and unknown risks, uncertainties, assumptions, estimates, and other important factors that could cause actual results to differ materially from any results, performance or events expressed or implied by such forward-looking statements. The factors included below under the caption “Summary Risk Factors” and described in further detail below under Item 1A Risk Factors of this report, among others, may cause actual results to differ materially from current expectations in the forward-looking statements, including those set forth in this report. All forward-looking statements attributable to us or persons acting on our behalf are expressly qualified in their entirety by the cautionary statements set forth herein. Forward-looking statements speak only as of the date they are made and we do not undertake or assume any obligation to update publicly any of these statements to reflect actual results, new information, or future events, changes in assumptions, or changes in other factors affecting forward-looking statements, except to the extent required by applicable law. If we update one or more forward-looking statements, no inference should be drawn that we will make additional updates with respect to those or other forward-looking statements. Summary Risk Factors An investment in shares of our Class A common stock involves a high degree of risk. If any of the factors enumerated below and described in more detail in the section entitled "Risk Factors" under Item 1A of this report occurs, our business, financial condition, liquidity, results of operations, and prospects could be materially and adversely affected. In that case, the market price of our Class A common stock could decline, and you may lose some or all of your investment. Some of the most material risks relating to an investment in our Class A common stock include the impact or effect on our Company and its operating results, or its investors, of: Regulatory and Compliance Risks, including: • new, or changes in, governmental regulations; • tax legislative initiatives or assessments; • more stringent capital requirements, to the extent they may become applicable to us; • heightened regulatory requirements resulting from our total assets exceeding $10 billion; • changes in accounting standards; and • any failure to comply with applicable laws and regulations, including the CRA and fair lending laws, the USA PATRIOT ACT, OFAC guidelines and requirements, the BSA, and the related FinCEN and FFIEC Guidelines and regulations (as each of such terms and acronyms is defined below); Credit Risks, including: • lending risks and risks associated with loan sector concentrations; • a decline in economic conditions that could reduce demand for our products and services and negatively impact the credit quality of loans; • loan credit losses exceeding estimates; • the soundness of other financial institutions; and • declining oil and gas prices, and declining demand for coal could negatively impact the demand and credit quality of loans; Liquidity Risks, including: • the availability of financing sources for working capital and other needs; and • a loss of deposits or a change in product mix that increases the Company’s funding costs; 1 Market Risks, including: • changes in interest rates; • changes to United States trade policies, including the imposition of tariffs and retaliatory tariffs; • competition from new or existing competitors; and • variable interest rates tied to LIBOR (defined below) that may no longer be available, or may become unreliable, to us; Operational Risks, including: • cyber-security risks, including “denial-of-service attacks,” “hacking,” and “identity theft” that could result in the disclosure of confidential information; • privacy, information security, and data protection laws, rules, and regulations that affect or limit how we collect and use personal information; • the potential impairment of our goodwill; • exposure to losses in collateralized loan obligation securities; • our reliance on other companies that provide key components of our business infrastructure; • events that may tarnish our reputation; • the loss of the services of our management team and directors; • our ability to attract and retain qualified employees to operate our business; • costs associated with repossessed properties, including environmental remediation; • the effectiveness of our systems of internal operating controls; and • our ability to implement new technology-driven products and services or be successful in marketing these products and services to our clients; Strategic Risks, including: • our ability to execute on our intended expansion plans; and • difficulties we may face in combining the operations of acquired entities or assets with our own operations or assessing the effectiveness of businesses in which we make strategic investments or with which we enter into strategic contractual relationships; Common Stock Risks, including: • our status as a “controlled company” under NASDAQ Marketplace Rules; • the volatility in the price and trading volume of our Class A common stock; • “anti-takeover” provisions and the regulations, which may make it more difficult for a third party to acquire control of us even in circumstances that could be deemed beneficial to stockholders; • changes in our dividend policy or our ability to pay dividends; • our Class A common stock not being an insured deposit; • the holders of the Class B common stock having voting control of the Company and the ability to determine virtually all matters submitted to stockholders, including potential change in control transactions, and our dual class common stock structure putting downward pressure on our common stock price; • the potential dilutive effect of future equity issuances; and • the subordination of our Class A common stock to our existing and future indebtedness; and General Risk Factors, including: • the COVID-19 (as defined below) pandemic and the U.S. government’s response to the pandemic; and • the effect of global conditions, earthquakes, tsunamis, floods, fires, and other natural catastrophic events. The foregoing risk factors are not necessarily all of the factors that could cause our actual results, performance, or achievements to differ materially from expectations. Other unknown or unpredictable factors also could harm our results. Investors and other interested parties are encouraged to read the information included under the section captioned “Risk Factors” below in its entirety before making an investment decision about our securities. 2 Our Company Item 1. Business We are a financial and bank holding company focused on community banking. Since our incorporation in Montana in 1971, we have grown both organically and through strategic acquisitions. Today, we operate 150 banking offices, including detached drive-up facilities, in communities across six states—Idaho, Montana, Oregon, South Dakota, Washington, and Wyoming. Through our bank subsidiary, First Interstate Bank, we deliver a comprehensive range of banking products and services—including online and mobile banking—to individuals, businesses, municipalities, and others throughout our market areas. We are proud to provide lending opportunities to clients that participate in a wide variety of industries, including: • Agriculture; • Construction; • Education; • Energy; • Governmental services; • Healthcare; • Hospitality; • Housing; • Mining; • Professional services; • Real Estate Development; • Retail; • Technology; • Tourism; and • Wholesale trade. We completed a recapitalization of our previously-existing common stock in March 2010, pursuant to which we effected a 4-for-1 split of our previously-existing common stock, a redesignation of our previously-existing common stock into Class B common stock, which is entitled to five votes per share, and the creation of a new class of common stock designated as Class A common stock, which is entitled to one vote per share. Holders of Class B common stock and Class A common stock vote together as a single class on all matters submitted to a vote of shareholders, unless otherwise required by law or by our articles of incorporation. The recapitalization was completed in preparation for our initial public offering, or IPO, of Class A common stock later that same month on the NASDAQ stock market, or NASDAQ, under the symbol “FIBK.” Since our IPO, we have expanded our market reach through organic growth and strategic acquisitions, including our acquisitions of Mountain West Bank, United Bank, N.A., Flathead Bank of Bigfork, Bank of the Cascades, Inland Northwest Bank, Idaho Independent Bank, and Community 1st Bank. As of December 31, 2020, we had consolidated assets of $17.6 billion, deposits of $14.2 billion, loans held for investment of $9.8 billion, and total stockholders’ equity of $2.0 billion. Our mission is to help people and their money work better together. With that as our guiding focus, we strive to be the most relevant everyday experience our clients have with their money. With our focus on community banking, we adhere to common values that have long provided a foundation for our growth and success: (1) Put people first, always; (2) Seek greatness; (3) Act with integrity; (4) Celebrate success; and (5) Demonstrate commitment to our communities. These values support our commitment to our employees, our clients, our communities, and our shareholders. Our business model is strategically aligned around four key pillars, which help us align, organize, and prioritize business strategies. These pillars guide our actions related to our employees, our clients, and our operations, ultimately leading to our financial success and creating value for our shareholders. • The first pillar is Our People, Our Priority. The success of our Company is a reflection of our people. We are building a diverse company, attracting the right people, retaining them in the right jobs, and developing them to meet our long-term needs. Our people are informed, capable, and resilient. • The second pillar is Relentless Client Focus. Our client loyalty is cultivated by our focus on every interaction, every time. By listening to our clients and learning about their needs, we are better able to connect their goals and dreams to the right products and services. 3 • The third pillar is Future Ready, Today. We live in a world in constant motion, which requires agility and resiliency; adapting our products and processes to be scalable and sustainable is essential. Robust and relevant systems and processes create a foundation for our employees to excel—not only in their personal performance, but in their delivery of our products and services to our clients. • The fourth pillar is Financial Vitality. Our strategic focus on balance sheet management and goal-oriented financial rigor keeps us a top-performing bank. Our emphasis on accountability and our collaborative approach to aligning our efforts under our four pillars allows our community banking model to flourish. By adhering to a strong set of values, we have grown our business strategically and significantly. Our long-term perspective emphasizes providing high-quality financial products and services, delivering exceptional client service, influencing business leadership within our communities through professional and dedicated bankers, supporting our communities through financial contributions and socially responsible leadership, and cultivating a strong corporate culture. We plan to continue our business in a disciplined and prudent manner, fueled by organic growth in our existing market areas and expansion into new and complementary markets when appropriate acquisition and other opportunities arise. Community Banking We have one operating segment—community banking. Community banking encompasses commercial and consumer banking services provided through our Bank: primarily the acceptance of deposits, extensions of credit, mortgage loan origination and servicing, and trust, employee benefit, investment, and insurance services. Our philosophy emphasizes community banking locally using a personalized service approach while also strengthening the communities in our market areas through service activities. We grant our banking offices significant authority in delivering products in response to local market considerations and client needs. This autonomy enables our banking offices to remain competitive by quickly responding to local market conditions and enhancing relationships with the clients they serve. We also require accountability by having company-wide standards and established limits on the authority and discretion of each banking office. This combination of authority and accountability allows our banking offices to provide personalized service and localized community support while at the same time remaining focused on our overall financial vitality. Lending Activities We offer real estate, consumer, commercial, agricultural, and other loans to individuals and businesses in our market areas. We have comprehensive credit policies establishing company-wide underwriting and documentation standards to assist management in the lending process and to limit our risk. Each loan must meet minimum underwriting standards specified in our credit policies. Minimum underwriting standards generally specify that loans: (1) are made to borrowers generally located within or adjacent to our market footprint or own businesses and/or real estate within or adjacent to our footprint, with limited exceptions that may include participation loans and loans to national accounts; are made only for identified legal purposes; have specifically identified sources of repayment; (2) (3) (4) mature within designated maximum maturity periods that coincide with repayment sources; (5) (6) (7) (8) (9) are appropriately collateralized whenever possible; are supported by current credit information; do not exceed the Bank’s legal lending limit; include medium-term fixed interest rates or variable rates that are adjusted within designated time frames; and require a flood determination prior to closing. In addition, our minimum underwriting standards include lending limitations to prevent concentrations of credit in agricultural, commercial, real estate, or consumer loans. Furthermore, each minimum underwriting standard must be documented, with exceptions noted, as a part of the loan approval process. While each loan must meet minimum underwriting standards established in our credit policies, bankers are granted levels of credit authority in approving and pricing loans to assure that banking offices are responsive to competitive issues and community needs in each market area. Lending authorities are established at individual, branch, and market levels. Credit authorities are established and assigned based on the credit experience and credit acumen of each branch loan officer. Credit authority is under the direction of our Chief Credit Officer or such officer’s designee and is reviewed on an ongoing basis. Credits over the authority of bankers are approved by the Chief Credit Officer with the concurrence of our Chief Risk Officer. 4 Deposit Products We offer traditional depository products including checking, savings, and time deposits. Deposits at the Bank are insured by the Federal Deposit Insurance Corporation, or the FDIC, up to statutory limits. We also offer repurchase agreements primarily to commercial and municipal depositors. Under repurchase agreements, we sell investment securities held by the Bank to our clients under an agreement to repurchase the investment securities at a specified time or on demand. All outstanding repurchase agreements are due in one business day. Wealth Management We provide a wide range of trust, employee benefit, investment management, insurance, agency, and custodial services to individuals, businesses, and nonprofit organizations. These services include the administration of estates and personal trusts, management of investment accounts for individuals, employee benefit plans and charitable foundations, and insurance planning. Centralized Services We have centralized certain operational activities to provide consistent service levels to our clients company-wide, which helps us gain efficiency in management of those activities as well as ensure regulatory compliance. Centralized operational activities generally support our banking offices in the delivery of products and services to clients and include: • marketing; credit review; • loan servicing; • • credit card issuance and servicing; • mortgage loan sales and servicing; • • • indirect consumer loan purchasing and processing; loan collections; and other operational activities. Additionally, specialized staff support services have been centralized to enable our branches to more efficiently serve their markets. These services include: • • • • • • • • • • • credit risk management; finance; accounting; human resource management; internal audit; facilities management; technology; risk management; legal; compliance; and other support services. Market Area The following table reflects our deposit market share and branch locations by state: Deposit Market Share and Branch Locations by State Idaho Montana Oregon South Dakota Washington Wyoming Total (1) Source: FDIC.gov-data as of June 30, 2020. (2) As of December 31, 2020. % of Market Deposits (1) 4.66 17.69 2.34 0.13 0.32 14.89 Deposit Market Share Rank (1) 8th 2nd 11th 12th 31st 2nd Number of Branches (2) 23 46 33 14 19 15 150 5 We operate in markets with a diverse employment base covering numerous industries and we believe our community bank approach to providing client service is a competitive advantage that strengthens the Company’s ability to effectively provide financial products and services to businesses and individuals in its markets. Competition There is significant competition among commercial banks in our market areas. We also compete with other providers of financial services who all actively engage in providing various types of loans and other financial services to their clients, such as: savings and loan associations; credit unions; financial technology companies; internet banks; consumer finance companies; brokerage firms; • • • • • • • mortgage banking companies; • • • mutual funds; • • major retailers. insurance companies; securities firms; government agencies; and To remain competitive in this congested industry, we continue to develop our omni-channel experience. Some of our competitors have greater resources and, as such, may have higher lending limits and may offer other services we do not provide. We generally compete on the basis of service and responsiveness to client needs, available loan and deposit products, rates of interest charged on loans, rates of interest paid for deposits, and the availability and pricing of services such as trust, employee benefit, investment, and insurance services. Government Regulation and Supervision We are subject to extensive government regulation and supervision under federal and state laws. Summaries of the material laws and regulations that are applicable to us are provided below. The descriptions that follow are not intended to summarize all laws and regulations applicable to us. Furthermore, the descriptions that follow do not purport to be complete and are qualified in their entirety by reference to the full provisions of those laws and regulations. In addition to laws and regulations, state and federal banking regulatory agencies may issue policy statements, interpretive letters, and similar written guidance that may impose additional regulatory obligations or otherwise affect the conduct of our business. Additionally, proposals to change laws and regulations are frequently introduced at both the federal and state levels. The likelihood and timing of any such changes and their impact on the Company cannot be determined with certainty. Regulatory Authorities As a public company with our securities listed for trading on the NASDAQ, we are subject to the disclosure and regulatory requirements of the Securities and Exchange Commission, or SEC (including under the Securities Act of 1933, as amended, and the Securities Exchange Act of 1934, as amended (or the Exchange Act)), and the NASDAQ. As a financial and bank holding company, we are subject to regulation under the Bank Holding Company Act of 1956, as amended, and to supervision, regulation, and regular examination by the Board of Governors of the Federal Reserve System (the “Federal Reserve”). The Bank is subject to supervision and regular examination by its primary banking regulators, the Federal Reserve and the Montana Department of Administration, Division of Banking and Financial Institutions (the “Montana Division”). The Bank is also subject to supervision and regular examination by the Consumer Financial Protection Bureau (“CFPB”). The Bank’s deposits are insured by the Deposit Insurance Fund (“DIF”) administered by the FDIC in the manner and to the extent provided by law. As such, the Bank is subject to the Federal Deposit Insurance Act (the “FDIA”) and FDIC regulations relating to deposit insurance and may also be subject to supervision and examination by the FDIC. We are currently subject to the regulatory capital framework and guidelines reached by Basel III as adopted by the Federal Reserve. The Federal Reserve has risk-based capital adequacy guidelines intended to measure capital adequacy with regard to a banking organization’s balance sheet, including off-balance sheet exposures such as unused portions of loan commitments, letters of credit, and recourse arrangements. 6 The extensive regulation of the Bank limits both the activities in which the Bank may engage and the conduct of its permitted activities. Further, the laws and regulations impose reporting and information collection obligations on the Bank. The Bank incurs significant costs relating to compliance with various laws and regulations and the collection and retention of information. As the regulatory framework for bank holding companies and banks continues to grow and become more complex, the cost of complying with regulatory requirements continues to increase. Financial and Bank Holding Company First Interstate BancSystem, Inc. is a bank holding company and has registered as a financial holding company under regulations issued by the Federal Reserve. As a financial holding company, we may engage in certain business activities that are determined by the Federal Reserve to be financial in nature or incidental to financial activities as well as all activities authorized generally to bank holding companies. We may engage in authorized financial activities, provided that we remain a financial holding company and are “well-capitalized” and “well-managed.” We do not currently engage in significant financial holding company business or activities not otherwise permitted generally for bank holding companies. Under federal law, First Interstate BancSystem, Inc. is required to serve as a source of financial and managerial strength to the Bank, which may include providing financial assistance to the Bank if the Bank experiences financial distress. Under existing Federal Reserve source of strength policies, the Federal Reserve may require a bank holding company to make capital injections into a troubled subsidiary bank. The Federal Reserve may also determine that the bank holding company is engaging in unsafe and unsound practices if it fails to commit resources to a subsidiary bank. We are required by the Bank Holding Company Act to obtain Federal Reserve approval prior to acquiring, directly or indirectly, ownership or control of voting shares of any bank, if, after such acquisition, we would own or control more than 5% of its voting stock. The Federal Reserve considers a number of factors in evaluating acquisitions, including the financial and managerial resources and future prospects of the parties, the convenience and needs of the communities served, and competitive factors. Under the Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010 (the “Dodd-Frank Act”), when considering an application, the Federal Reserve is also required to evaluate whether the transaction would result in more concentrated risks to the United States banking or financial system. Under federal law and regulations, a bank holding company may acquire banks in states other than its home state if, among other things, the bank holding company is both “well-capitalized” and “well-managed” both before and after the acquisition. Banks may also merge across state lines. With additional changes made to federal statutes under the Dodd-Frank Act, banks are also permitted to establish new interstate branches if a bank located in the target state could establish a new branch at the proposed location without regard to state laws limiting interstate de novo branching. A state can prohibit interstate mergers entirely or prohibit them if the continuing bank would control insured bank deposits in excess of a specified percentage of total insured bank deposits in the state. Under Montana law, a bank cannot acquire control of a bank located in Montana if, after the acquisition, the acquiring institution would control, in the aggregate, more than 30% of the total deposits of insured depository institutions located in Montana. As of June 30, 2020, based on publicly available information provided by the FDIC, we believe the Bank controlled approximately 17.7% of the total deposits of all insured depository institutions located in Montana. As such, the state limitation may limit our ability to directly or indirectly acquire additional banks located in Montana. In order to assess the financial strength of the bank holding company, the Federal Reserve and the State of Montana may conduct periodic on-site and off-site inspections and credit reviews throughout the year. The federal banking agencies, including the Federal Reserve, may require additional information and reports from us. In addition, the Federal Reserve may examine, and require reports and information regarding, any entity that we control, including entities other than banks or entities engaged in financial activities. In certain circumstances, the Federal Reserve may require us to divest of non- bank entities or limit the activities of those entities even if the activities are otherwise permitted to bank holding companies under governing law. 7 Dividends and Restrictions on Transfers of Funds Dividends from the Bank are the primary source of funds for the payment of our operating expenses and for the payment of dividends to our shareholders, and are limited by state and federal laws and regulations. We are also subject to various regulatory restrictions relating to capital distributions, including dividends, regulatory capital minimums, and the requirement to remain “well-capitalized” under the prompt corrective action regulations summarized below under the caption “Business – Government Regulation and Supervision – Capital Standards and Prompt Corrective Action.” In general, the Bank is limited to paying dividends that do not exceed the current year net profits together with retained earnings from the two preceding calendar years unless prior consent of the Federal Reserve is obtained. In addition, the Bank may not pay dividends in excess of the previous two years’ net earnings without providing notice to the Montana Division. The capital buffer rules adopted by the federal banking regulators in accordance with the Basel Accords impose further limitations on the Bank’s ability to pay dividends. In general, the Bank’s ability to pay dividends is limited under the capital buffer rules unless the Bank’s common equity conservation buffer exceeds the minimum required capital ratio by 2.5% of risk-weighted assets. A state or federal banking regulator may also impose, by regulatory order or agreement of the Bank, specific dividend limitations or prohibitions. The Bank is not, however, currently subject to a specific regulatory dividend limitation. The Federal Reserve has issued a policy statement regarding the payment of dividends and the repurchase of common stock by bank holding companies. In general, the policy provides that dividends should be paid only out of current earnings and only if the prospective rate of earnings retention by the holding company appears consistent with the organization’s capital needs, asset quality, and overall financial condition. Regulatory guidance provides for prior regulatory consultation with respect to capital distributions in certain circumstances such as where the company’s net income for the past four quarters (net of previous capital distributions) is insufficient to fully fund the dividend or the company’s overall rate of earnings retention is inconsistent with the company’s capital needs and overall financial condition. The ability of a holding company to pay dividends may be restricted if a subsidiary bank becomes under-capitalized. The policy statement also states that a holding company should inform the Federal Reserve supervisory staff prior to redeeming or repurchasing common stock or perpetual preferred stock if the holding company is experiencing financial weaknesses or if the repurchase or redemption would result in a net reduction, as of the end of a quarter, in the amount of such equity instruments outstanding compared with the beginning of the quarter in which the redemption or repurchase occurred. These regulatory policies may affect our ability to pay dividends, repurchase shares of common stock, or otherwise engage in capital distributions. Capital Standards and Prompt Corrective Action Banks and bank holding companies are subject to various regulatory capital requirements administered by state and federal banking agencies, which involve quantitative measures of assets, liabilities, and certain off-balance sheet items calculated under regulatory accounting practices. Capital amounts and classifications are also subject to qualitative judgments by regulators about components, risk weighting, and other factors. The capital requirements are intended to ensure that banking organizations have adequate capital given the risk levels of assets and off-balance sheet financial instruments and are applied separately to the Bank and its parent holding company. Federal regulations require FDIC-insured depository institutions and bank holding companies to meet several minimum capital standards: • • • • a common equity Tier 1 capital to risk-based assets ratio of 4.5%; a Tier 1 capital to risk-based assets ratio of 6.0%; a total capital to risk-based assets ratio of 8.0%; and a 4.0% Tier 1 capital to total assets leverage ratio. The existing capital requirements were effective January 1, 2015, and are based on recommendations of the Basel Committee on Banking Supervision and requirements of the Dodd-Frank Act. 8 For purposes of the regulatory capital requirements, common equity Tier 1 capital is generally defined as common stockholders’ equity and retained earnings and is reduced by substantially all of the regulatory deductions including items such as goodwill and other intangibles and certain deferred tax assets. Tier 1 capital is generally defined as common equity Tier 1 capital and additional Tier 1 capital. Additional Tier 1 capital includes certain noncumulative perpetual preferred stock and related surplus and minority interests in equity accounts of consolidated subsidiaries. Total capital includes Tier 1 capital (common equity Tier 1 capital plus additional Tier 1 capital) and Tier 2 capital. Tier 2 capital is composed of capital instruments and related surplus, meeting specified requirements, and may include cumulative preferred stock and long-term perpetual preferred stock, mandatory convertible securities, intermediate preferred stock, and subordinated debt. Also included in Tier 2 capital is the allowance for credit losses limited to a maximum of 1.25% of risk-weighted assets and, for institutions like us that have exercised an opt-out election regarding the treatment of Accumulated Other Comprehensive Income (“AOCI”), up to 45.0% of net unrealized gains on available-for-sale equity securities with readily determinable fair market values. Institutions that have not exercised the AOCI opt-out have AOCI incorporated into common equity Tier 1 capital (including unrealized gains and losses on available-for-sale-securities). Calculation of all types of regulatory capital is subject to deductions and adjustments specified in the regulations. In determining the amount of risk-weighted assets for purposes of calculating risk-based capital ratios, all assets, including certain off-balance sheet assets (for example, recourse obligations, direct credit substitutes, residual interests), are multiplied by a risk weight factor assigned by the regulations based on the risks believed inherent in the type of asset. Higher levels of capital are required for asset categories believed to present greater risk. For example, a risk weight of 0% is assigned to cash and United States government securities, a risk weight of 50% generally is assigned to prudently underwritten first lien one- to four-family residential mortgages, a risk weight of 100% is assigned to commercial and consumer loans, a risk weight of 150% is assigned to certain past due loans, and a risk weight of between 0% to 600% is assigned to permissible equity interests, depending on certain specified factors. In addition to establishing the minimum regulatory capital requirements, the regulations limit capital distributions and certain discretionary bonus payments to management if the institution does not hold a “capital conservation buffer” consisting of 2.5% of common equity Tier 1 capital to risk-weighted assets above the amount necessary to meet its minimum risk-based capital requirements. In assessing an institution’s capital adequacy, the Federal Reserve takes into consideration not only these numeric factors, but qualitative factors as well and has the authority to establish higher capital requirements in individual cases where deemed necessary. The Federal Reserve has not established individual capital requirements applicable to us. The Dodd-Frank Act and the revised regulations limit the use of hybrid capital instruments in meeting regulatory capital requirements, including instruments similar to those which we currently have issued and outstanding. At this time, we meet the criteria for grandfathering under the Dodd-Frank Act, therefore, the limitations on use of hybrid capital instruments do not apply to our outstanding instruments. However, once the Company surpasses $15.0 billion in assets by acquisition, we may lose Tier 1 qualification of trust preferred securities. Federal law requires the federal banking agencies to take “prompt corrective action” in respect of depository institutions that do not meet minimum capital requirements. The law sets forth the following five capital tiers: • • • • • “well capitalized;” “adequately capitalized;” “under-capitalized;” “significantly under-capitalized;” and “critically under-capitalized.” A depository institution’s capital tier will depend upon how its capital levels compare with various relevant capital measures and certain other factors, as established by regulation. The relevant capital measures are the common equity tier 1 capital ratio, total capital ratio, the tier 1 capital ratio, and the leverage ratio. A depository institution is generally prohibited from making any capital distributions (including payment of a dividend) or paying any management fee to its parent holding company if the depository institution would thereafter be under- capitalized. Under-capitalized institutions may be subject to growth limitations and other restrictions and are required to submit a capital restoration plan. If a depository institution fails to submit an acceptable plan, it is treated as if it is “significantly under-capitalized.” 9 “Significantly under-capitalized” depository institutions are subject to additional requirements and restrictions, such as orders to sell sufficient stock to become “adequately capitalized,” to reduce total assets, restrict interest rates paid, remove management and directors, and cease receipt of deposits from correspondent banks. “Critically under-capitalized” institutions are subject to the appointment of a receiver or conservator. The capital stock of banks organized under Montana law, such as the Bank, may be subject to assessment upon the direction of the Montana Department of Administration under the Montana Bank Act. Under the Montana Bank Act, if the Department of Administration determines an impairment of a bank’s capital exists, it may notify the bank’s board of directors of the impairment and require payment of an assessment on the bank stock. If the bank fails to do so, the Department of Administration may, among other things, take charge of the bank and proceed to liquidate the bank. Restrictions on Transactions with Affiliates, Directors, and Officers Under the Federal Reserve Act, the Bank may not lend funds or otherwise extend credit to its parent holding company or any other affiliate, except on specified types and amounts of collateral generally upon market terms and conditions. The Federal Reserve also has authority to define and limit the transactions between banks and their affiliates. The Federal Reserve’s Regulation W and relevant federal statutes and regulations, among other authorities, impose significant limitations on transactions in which the Bank may engage with us or with other affiliates, including per-affiliate and aggregate limits on affiliate transactions. Federal Reserve Regulation O restricts loans to the Bank and its parent holding company’s insiders, which includes directors, certain officers, and principal shareholders and their respective related interests. All extensions of credit to the insiders and their related interests must be on the same terms as, and subject to the same loan underwriting requirements as, loans to persons who are not insiders. In addition, Regulation O imposes lending limits on loans to insiders and their related interests and imposes, in certain circumstances, requirements for prior approval of the loans by the Bank board of directors. Safety and Soundness Standards and Other Supervisory and Enforcement Mechanisms The federal banking agencies have adopted guidelines establishing standards for safety and soundness, asset quality and earnings, internal controls, and audit systems. These standards are designed to identify potential concerns and ensure action is taken to address those concerns before they pose a risk to the DIF. If a federal banking agency determines that an institution fails to meet any of these standards, the agency may require the institution to submit an acceptable plan to achieve compliance with the standard. If the institution fails to submit an acceptable plan within the time allowed by the agency or fails in any material respect to implement an accepted plan, the agency must, by order, require the institution to correct the deficiency and may take other supervisory action. Pursuant to the Dodd-Frank Act, federal banking regulators impose additional supervisory measures on banking organizations such as us when they exceed $10 billion in assets. These include enhanced risk management and corporate governance processes specified by the regulators. The Federal Reserve has authority to bring an enforcement action against a bank or bank holding company and all “institution-affiliated parties” of a bank or bank holding company, including directors, officers, stockholders, and under certain circumstances, attorneys, appraisers, and accountants for the bank or holding company. Formal enforcement actions may include measures such as the issuance of a capital directive or cease and desist order for the removal of officers and/or directors or the appointment of a receiver or conservator. Civil money penalties cover a wide range of violations and actions, and can range up to $25,000 per day, unless a finding of reckless disregard is made, in which case penalties may be as high as $1 million per day. The FDIC also has the authority to terminate deposit insurance or recommend to the Federal Reserve that enforcement action be taken with respect to a particular bank. If such action is not taken, the FDIC has authority to take the action under specified circumstances. Montana law also provides the Montana Division with various enforcement mechanisms and, ultimately, authority to appoint a receiver or conservator for a Montana bank. Deposit Insurance The FDIC insures our client deposits through the DIF up to $250,000 per depositor. The amount of FDIC assessments paid by each DIF member institution is based on financial measures and supervisory ratings derived from a statistical model estimating the probability of failure within a three-year period, with banks deemed more risky paying higher assessments. 10 The FDIC was required by the Dodd-Frank Act to take actions necessary to cause the DIF to reach a reserve ratio of 1.35% of total estimated insured deposits by September 30, 2020. On September 30, 2018, the DIF Reserve Ratio reached 1.36%. As of September 30, 2020, the FDIC had announced that the ratio had declined to 1.30% due largely to consequences of the COVID-19 pandemic. The FDIC adopted a plan to restore the fund to the 1.35% ratio within eight years, but did not change its assessment schedule. All FDIC-insured institutions are also required to pay assessments to the FDIC to fund interest payments on bonds issued by the Financing Corporation, or the FICO, an agency of the Federal government established to recapitalize the predecessor to the DIF. The assessment rate is applied to total average assets less tangible equity, as defined under the Dodd-Frank Act. The assessment rate schedule can change from time-to-time at the discretion of the FDIC, subject to certain limits. Under the current system, premiums are assessed quarterly. Interchange Fees Under the Durbin Amendment to the Dodd-Frank Act, the Federal Reserve adopted rules establishing standards for assessing whether the interchange fees that may be charged with respect to certain electronic debit transactions are “reasonable and proportional” to the costs incurred by issuers for processing such transactions, which alters the competitive structure of the debit card payment processing industry and caps debit card interchange fees for banks with over $10 billion in assets. Interchange fees are charges that merchants pay to us and other card-issuing banks for processing electronic payment transactions. The Federal Reserve also has rules governing routing and exclusivity that require issuers to offer two unaffiliated networks for routing transactions on each debit or prepaid product. We are subject to the interchange fee cap because our assets exceed $10 billion. Client Privacy and Other Consumer Protections Federal and State laws impose client privacy requirements on any company engaged in financial activities, including us. Under these requirements, a financial company is required to protect the security and confidentiality of clients’ nonpublic personal information. In addition, for clients who obtain a financial product such as a loan for personal, family, or household purposes, a financial holding company is required to disclose its privacy policy to the client at the time the relationship is established and annually thereafter. The financial company must also disclose its policies concerning the sharing of the client’s nonpublic personal information with affiliates and third parties. Finally, a financial company is prohibited from disclosing an account number or similar item to a third party for use in telemarketing, direct mail marketing, or marketing through electronic mail. The Bank is subject to a variety of federal and state laws, regulations, and reporting obligations aimed at protecting consumers and Bank clients. Failure to comply with these laws and regulations may, among other things, impair the collection of loans made in violation of the laws and regulations, provide borrowers or other clients certain rights and remedies, or result in the imposition of penalties on the Bank. Certain of these laws and regulations are described below. The Equal Credit Opportunity Act generally prohibits discrimination in credit transactions on, among other things, the basis of race, color, religion, national origin, sex, marital status, or age and, in certain circumstances, limits the Bank’s ability to require co-obligors or guarantors as a condition of the extension of credit to an individual. The Real Estate Settlement Procedures Act (“RESPA”) requires certain disclosures be provided to borrowers in real estate loan closings or other real estate settlements. In addition, RESPA limits or prohibits certain settlement practices, fee sharing, “kickbacks,” and similar practices that are considered to be abusive. The Truth in Lending Act (“TILA”) requires disclosures to borrowers and other parties in consumer loans, including, among other things, disclosures relating to interest rates and other finance charges, payments and payment schedules, and annual percentage rates. The Fair Housing Act regulates, among other things, lending practices in residential lending and prohibits discrimination in housing-related lending activities on the basis of race, color, religion, national origin, sex, handicap, disability, or familial status. The Home Mortgage Disclosure Act requires certain lenders and other firms engaged in the home mortgage industry to collect and report information relating to applicants, borrowers, and home mortgage lending activities in which they engage in their market areas or communities. The information is used for, among other purposes, evaluation of discrimination or other impermissible acts in home mortgage lending. 11 The Home Ownership and Equity Protection Act regulates terms and disclosures of certain closed-end home mortgage loans that are not purchase money loans and includes loans classified as “high-cost loans.” The Fair Credit Reporting Act, as amended by the Fair and Accurate Credit Transactions Act, generally limits lenders and other financial firms in their collection, use, or dissemination of client credit information, gives clients some access to, and control over, their credit information, and requires financial firms to establish policies and procedures intended to deter identity theft and related frauds. The Fair Debt Collection Practices Act regulates actions that may be taken in the collection of consumer debts and provides consumers with certain rights of access to information related to collection actions. The Electronic Fund Transfer Act regulates fees and other terms on electronic funds transactions. The CFPB has promulgated numerous regulations relating to consumer financial services-related topics, such as mortgage origination disclosures, mortgage servicing practices, and others. The Community Reinvestment Act (“CRA”) generally requires the federal banking agencies to evaluate the record of a financial institution in meeting the credit needs of its local communities, including low- and moderate-income neighborhoods. In addition to substantial penalties and corrective measures that may be assessed for a violation of fair lending laws, the federal banking agencies may take compliance with such laws and the CRA into account when evaluating applications for transactions such as mergers and for new branches. In connection with its assessment of CRA performance, the appropriate bank regulatory agency assigns a rating of “outstanding,” “satisfactory,” “needs to improve,” or “substantial noncompliance.” The Bank received an “outstanding” rating on its most recently published CRA examination. Although the Bank’s policies and procedures are designed to achieve compliance with all fair lending and CRA requirements, instances of non-compliance are occasionally identified through normal operational activities. Management endeavors to respond proactively to any instances of non-compliance and to implement and update appropriate procedures to prevent instances of non-compliance and other violations from occurring. USA PATRIOT Act The USA PATRIOT Act of 2001 amended the Bank Secrecy Act of 1970 and the Money Laundering Control Act of 1986 and adopted additional measures requiring insured depository institutions, broker-dealers, and certain other financial institutions to have policies, procedures, and controls to detect, prevent, and report money laundering and terrorist financing. The laws and related regulations also provide for information sharing, subject to conditions, between federal law enforcement agencies and financial institutions, as well as among financial institutions, for counter-terrorism purposes. Federal banking regulators are required, when reviewing bank holding company acquisition or merger applications, to take into account the effectiveness of the anti-money laundering activities of the applicants. Office of Foreign Asset Control The United States Treasury Office of Foreign Asset Control enforces economic and trade sanctions imposed by the United States on foreign persons and governments. Among other authorities, the Office of Foreign Asset Control, or OFAC, may require United States financial institutions to block or “freeze” assets of identified foreign persons or governments which come within the control of the financial institution. Financial institutions are required to adopt procedures for identification of new and existing deposit accounts and other relationships with persons or governments identified by OFAC and to timely report the accounts or relationships to OFAC. 12 Incentive Compensation In May 2016, the Federal Reserve Board, other federal banking agencies, and the SEC jointly published a re-proposed rule-making designed to implement provisions of the Dodd-Frank Act prohibiting incentive compensation arrangements that would encourage inappropriate risk taking at a covered institution, which includes a bank or bank holding company with $1 billion or more of assets, such as us. The proposed rule (i) prohibits incentive-based compensation arrangements that encourage executive officers, employees, directors, or principal shareholders to expose the institution to inappropriate risks by providing excessive compensation (based on the standards for excessive compensation adopted pursuant to the FDIA) and (ii) prohibits incentive-based compensation arrangements for executive officers, employees, directors or principal shareholders that could lead to a material financial loss for the institution. The proposed rule requires covered institutions to establish policies and procedures for monitoring and evaluating their compensation practices. The comment period ended in July 2016. Although final rules had not been adopted as of February 2021, if these or other regulations are adopted in a form similar to the proposed rule-making, they could impose limitations on the manner in which we may structure compensation for our executives. Cyber-security Federal regulators have issued two related statements regarding cyber-security. One statement indicates that financial institutions should design multiple layers of security controls to establish lines of defense and ensure their risk management processes also address the risk posed by compromised client credentials, including security measures to reliably authenticate clients accessing internet-based services of the financial institution. The other statement indicates that a financial institution’s management is expected to maintain sufficient business continuity planning processes to ensure the rapid recovery, resumption, and maintenance of the institution’s operations after a cyber-attack involving destructive malware. A financial institution is also expected to develop appropriate processes to enable recovery of data and business operations and address rebuilding network capabilities and restoring data if the institution or its critical service providers fall victim to this type of cyber-attack. If we fail to observe the regulatory guidance, we could be subject to various regulatory sanctions, including financial penalties. In the ordinary course of business, we rely on electronic communications and information systems to conduct our operations and to store sensitive data. We employ a variety of preventative and detective controls and tools to monitor, block, and provide alerts regarding suspicious activity and to report on any suspected advanced persistent threats. We also offset cyber risk through internal training, testing of our employees, and we procure insurance to provide assistance on significant incidents and to offset potential liability. To date, we have not experienced a significant compromise, significant data loss, or any material financial losses related to cyber-security attacks. Risks and exposures related to cyber-security attacks are expected to remain high for the foreseeable future due to the rapidly evolving nature and sophistication of these threats, as well as due to the expanding use of third-party service providers, internet banking, mobile banking, and other technology-based products and services by us and our clients. Human Capital People and relationships are and always have been our number one focus. We know our success as an organization depends on engaged people, working well together, fueled by great leadership, creating an environment that people want to be a part of. As indicated by our first strategic pillar – Our People, Our Priority – discussed above, we are building a diverse company of the right people, in the right jobs, who take care of our clients, strengthen our communities, and ultimately deliver long-term results for our shareholders. We are therefore actively engaged in, and maintain programs driven at attracting, developing, and retaining a team of individuals who will exemplify the goals of our first pillar. As of December 31, 2020, we employed 2,462 full-time equivalent employees, none of whom are represented by a collective bargaining agreement. This represents a decrease of 11 full-time equivalent employees from December 31, 2019. We believe this relatively minor decrease, experienced during the COVID-19 pandemic, is a testament to the strength of our relationships with our employees and is evidence that our retention tools are working. As of December 31, 2020, approximately 72.3% of our full-time equivalent workforce was female, 27.7% was male, and their average tenure was 8.3 years, an increase of 3.8% from an average tenure of 8.0 years as of December 31, 2019. Employee engagement fuels our culture and annually we partner with Gallup to conduct an employee engagement survey. We continue to see great participation with approximately 95% of our employees responding to the survey. Through this feedback, we consider our employee relations to be favorable. 13 COVID-19 Response The Company has taken significant measures to ensure the health and safety of our employees during the global pandemic. Since the onset of COVID-19 in March of 2020, we have offered our employees Special Condition Time Off allowing time-off without utilizing Paid Time Off, or PTO, hours, giving them a chance to focus on their health and the health of their families. Over 212,850 hours of Special Condition Time Off were used by our employees in 2020. Additionally, over 70% of our employees had access to work-from-home accommodations and we encouraged alternative work arrangements as appropriate. The Bank’s insurance covered the cost of COVID-19 testing for employees. For our employees whose duties could not be completed from home, we provided personal protective equipment and communicated safety protocols and expectations frequently. We also provided temperature screening in locations with greater than 50 employees, along with safety protocols (social distancing, mask requirements, exposure and illness notification, and stay-home procedures) to reduce the risk of exposure in the workplace. To help manage fatigue, we provided employee assistance program resources along with weekly guided meditation sessions. Website Access to SEC Filings The Company’s electronic filings with the SEC, including Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K, and Proxy Statements, as well as amendments to these reports and statements filed or furnished pursuant to Section 13(a) or 15(d) of the Exchange Act, are made available at no cost through our website at www.FIBK.com, by clicking through the “SEC Filings” tab found there, as soon as reasonably practicable after the Company files such material with, or furnishes it to, the SEC. The Company’s SEC filings are also available through the SEC’s website at www.sec.gov. Our website and the information contained therein or connected thereto is not intended to be incorporated into this report and should not be considered a part of this report, and the referenced websites are not intended to act as active hyperlinks. Item 1A. Risk Factors Like other financial institutions and bank holding companies, the success of our business is subject to a number of risks and uncertainties, many of which are outside our control. The material risks and uncertainties of which we are currently aware are set forth below under headings that are provided for convenience and intended to organize the risks and uncertainties into related categories to improve readability for investors; no inference should be drawn, however, that the placement of a risk factor under a particular category means it is not applicable to another category of risks or that it may be more or less material than another risk factor. Regardless, if any of the events or circumstances described below actually occur, our business, financial condition, results of operations, and prospects could be harmed. These risks are not the only ones we may face. Other risks of which we are not aware, including those which relate to the banking and financial services industry in general and us in particular, or those which we do not currently believe are material, may harm our future business, financial condition, results of operations, and prospects. You should consider carefully the following important factors in evaluating us and our business before you make an investment decision about our securities. Regulatory and Compliance Risks New governmental regulations and/or changes in existing governmental regulations could have a material, adverse effect on the Company. The Company is extensively regulated under federal and state banking laws and regulations that are intended primarily for the protection of depositors, the DIF, and the banking system as a whole. Both the scope of the laws and regulations and the intensity of the supervision to which our business is subject have increased in recent years in response, we believe, to the financial crisis as well as other factors, such as technological and market changes. Regulatory enforcement and fines have also increased across the banking and financial services sector. Many of these changes have occurred as a result of the Dodd-Frank Act and its implementing regulations. The Company expects its business will remain subject to extensive regulation and supervision. 14 Regulations, along with the currently existing tax, accounting, securities, insurance, employment, monetary, and other laws and regulations, rules, standards, policies, and interpretations control the methods by which we conduct business, implement strategic initiatives and tax compliance, and govern financial reporting and disclosures. In addition, the Company is subject to changes in federal and state laws as well as changes in banking and credit regulations and governmental economic and monetary policies. Congress may enact legislation from time-to-time that affects the regulation of the financial services industry, and state legislatures may enact legislation from time-to-time affecting the regulation of financial institutions chartered by or operating in those states. Federal and state regulatory agencies also periodically propose and adopt changes to their regulations or change the manner in which existing regulations are applied. The results of the 2020 elections have produced, and likely will continue to produce, certain changes in the leadership and senior staffs of the federal banking agencies, the CFPB, CFTC, SEC, and the Treasury Department as well as the state level where gubernatorial and legislative elections have resulted in changes may lead to change in state regulatory agencies. With few exceptions, the heads of agencies and departments will change at the federal level in 2021, pending Senate confirmation, and may also change at the state level. These changes could impact the rulemaking, supervision, examination and enforcement priorities, and policies of the agencies. We continue to assess the potential impact this may have on financial and economic markets and on our business. The nature, timing, and economic and political effects of potential future changes to the current legal and regulatory framework affecting financial institutions remain highly uncertain. It is unclear what additional laws, regulations, and policies may change and whether future changes or uncertainty surrounding future changes will adversely affect our operating environment and therefore our results of operations and financial condition. Tax legislative initiatives or assessments could adversely affect our results of operations and financial condition. We are subject to income and other taxes in the United States and in the various jurisdictions in which we operate. The laws and regulations related to tax matters are extremely complex and subject to varying interpretations. Although management believes our positions are reasonable, we are subject to audit by the Internal Revenue Service in the United States and by tax authorities in all the jurisdictions in which we conduct business operations. While we believe we comply with all applicable tax laws, rules, and regulations in the relevant jurisdictions, the tax authorities may determine that we owe additional taxes or apply existing laws and regulations more broadly, which could result in a significant increase in liabilities for taxes and interest in excess of accrued liabilities. New tax legislative initiatives, including increases in the corporate tax rate, may be enacted, impacting our effective tax rate at the federal and state level and potentially adversely affecting our tax positions or tax liabilities. In addition, unilateral or multi-jurisdictional actions by various tax authorities, including an increase in tax audit activity, could have an adverse impact on our tax liabilities. We may be subject to more stringent capital requirements in the future, the impact of which could have a material risk on our operations. Federal and state banking regulators also possess broad powers to take supervisory actions as they deem appropriate. These supervisory actions may result in higher capital requirements, higher deposit insurance premiums, and limitations on the Company’s activities that could have a material adverse effect on its business and profitability. For example, in July 2013, the FDIC and the federal banking agencies approved a new rule that substantially amended the regulatory risk-based capital rules applicable to us by adopting “Basel III” regulatory capital reforms and other changes required by the Dodd- Frank Act. That rule included minimum risk-based capital and leverage ratios, which became effective for us on January 1, 2015, and refined the definition of what constitutes “capital” for calculating these ratios. The rule required unrealized gains and losses on certain “available-for-sale” securities holdings to be included for calculating regulatory capital requirements unless a one-time opt-out is exercised. In addition, the final rule established a “capital conservation buffer” that, once fully phased in and combined with established minimum common equity, risk-based assets capital, and total capital ratios, will exceed the prompt corrective action “well-capitalized” thresholds. (According to the FDIC Improvement Act of 1991, a depository institution is “well-capitalized” if it has a total risk-based capital ratio of 10% or greater; a Tier 1 risk-based capital ratio of 8.0% or greater; a Tier 1 leverage ratio of 5.0% or greater; a common equity Tier 1 capital ratio of 6.5% or greater; and is not subject to a regulatory order, agreement, or directive to meet and maintain a specific capital level for any capital measure.) In January 2019, the phase-in of the new capital conservation buffer requirement was completed. An institution will be subject to limitations on paying dividends, engaging in share repurchases, and paying discretionary bonuses if its capital level falls below the buffer amount. These limitations will establish a maximum percentage of eligible retained income that can be utilized for such actions. 15 Our total assets exceed $10 billion, which subjects us to heightened regulatory requirements that could negatively impact our results of operations. As of December 31, 2020, we had consolidated total assets of $17.6 billion. This means the Company is subject to various additional requirements on bank holding companies with $10 billion or more total assets, as imposed by the Dodd- Frank Act and its implementing regulations, including compliance with portions of the Federal Reserve’s enhanced prudential oversight requirements, limitations on the amount of interchange fees we may charge for debit and credit card transactions, and a more frequent and enhanced regulatory examination regime. In addition, for compliance in certain areas such as consumer financial protection laws and regulations, the Bank, with $10 billion or more in total assets, is primarily examined by the CFPB, with the Federal Reserve maintaining supervision over some consumer-related regulations. The Bank previously was examined by the Federal Reserve for compliance with consumer protection laws. The CFPB is a relatively new federal agency with evolving regulations and practices, causing some uncertainty as to how the CFPB’s examination and regulatory authority might impact our business. Violations of applicable consumer protection laws can result in significant potential liability from litigation brought by clients, including actual damages, restitution, and attorney's fees. Federal bank regulators, state attorneys general, and state and local consumer protection agencies may also seek to enforce consumer protection requirements and obtain these and other remedies, including regulatory sanctions, client rescission rights, and civil money penalties in the jurisdictions in which we operate. Failure to comply with consumer protection requirements may also result in delays or restrictions on mergers and acquisitions and expansionary activities we may wish to pursue, and could otherwise materially and adversely affect our business, financial condition, and results of operations. Changes in accounting standards could materially negatively impact our financial statements. From time-to-time, the Financial Accounting Standards Board (“FASB”) and the SEC change the financial accounting and reporting standards that govern the preparation of our financial statements. These changes can materially impact how we record and report our financial condition and results of operations. For example, the FASB issued amendments to its guidance on the credit impairment of financial instruments. The amendments were effective for fiscal year 2020, which introduced a new impairment model based on current expected credit losses (“CECL”) rather than incurred losses. As a result of the amendments, we increased our allowance for credit losses, which had a significant impact on our results of operations. Any failure to comply with laws and regulations, including the Community Reinvestment Act (CRA) and fair lending laws, could lead to material penalties. We must comply with the CRA, the Equal Credit Opportunity Act, the Fair Housing Act, and other fair lending laws and regulations that impose non-discriminatory lending and other requirements on financial institutions. A failure to comply with these laws could result in a wide variety of sanctions, including the required payment of damages and civil money penalties, injunctive relief, imposition of restrictions on mergers and acquisitions activity, and restrictions on expansion. In addition to actions by the U.S. Department of Justice and other federal agencies, including the Federal Reserve and CFPB, who are responsible for enforcing these laws, our compliance with fair lending laws could be challenged in private class action litigation. The costs of defending any such challenge and any adverse outcome arising from such a challenge could damage our reputation or could have a material adverse effect on our business, financial condition, or results of operations. We are subject to the USA PATRIOT Act, OFAC guidelines and requirements, the BSA, and related FinCEN and FFIEC Guidelines and regulations and any failure to comply with them could result in material implications that could harm our business. We are routinely examined by our regulators for compliance with the USA PATRIOT Act, OFAC guidelines and requirements, the BSA, and related FinCEN and FFIEC Guidelines. Failure to maintain and implement adequate programs and fully comply with all of the relevant laws or regulations could have serious legal, financial, and reputational consequences for us, including causing applicable bank regulatory authorities not to approve merger or acquisition transactions when regulatory approval is required, or to prohibit such transactions even if approval is not required. Regulatory authorities have imposed cease and desist orders and significant civil money penalties against institutions found to be violating these regulations. If any of the foregoing were to come to pass, our business, financial condition, or results of operations could be materially and adversely affected. 16 Credit Risks We are subject to lending risks and risks associated with loan sector concentrations to which other companies may not be exposed, which could adversely affect the Company. We take on credit risk by virtue of making loans and extending loan commitments and letters of credit. Our credit standards, procedures, and policies may not prevent us from incurring substantial credit losses, particularly in light of market developments. Our loans held for investment portfolio are concentrated in commercial real estate and commercial business loans. As of December 31, 2020, we had $5.9 billion of commercial loans, including $3.7 billion of commercial real estate loans, representing approximately 60.2% of our loans held for investment portfolio. These loans may involve greater risks than other types of lending. Because payments on such loans are often dependent on the successful operation or development of the property or business involved, repayment of such loans is more sensitive than other types of loans to adverse conditions in the real estate market or the general economy. Commercial loans typically are made based on borrowers’ ability to make repayment from the cash flow of the commercial venture. If the cash flow from business operations is reduced, the borrower’s ability to repay the loan may be impaired. Due to the larger average size of each commercial loan as compared with other loans, as well as the collateral that is generally less readily-marketable, losses incurred on commercial loans could have a material adverse impact on our business, financial condition, and results of operations. In addition, as of December 31, 2020, we had $2.9 billion of agricultural, agricultural real estate, construction real estate, and residential real estate loans, representing approximately 29.6% of our total loans held for investment portfolio. Many of our borrowers operate in industries that are directly or indirectly impacted by changes in commodity prices, such as agriculture, livestock, and energy businesses, as well as businesses indirectly impacted by commodities prices, such as businesses that transport commodities or manufacture equipment used in production of commodities. Changes in commodity products prices depend on local, regional, and global events or conditions that affect supply and demand for the relevant commodity. Deterioration in economic conditions or in the real estate market could result in increased delinquencies and foreclosures and could have an adverse effect on the collateral value for many of these loans and on the repayment ability of many of our borrowers. Deterioration in economic conditions or in the real estate market could also reduce the number of loans we make to businesses in the construction and real estate industry, which could negatively impact our interest income and results of operations. Similarly, the occurrence of a natural or manmade disaster in our market areas could impair the value of the collateral we hold for real estate secured loans. Any one or a combination of the factors identified above could negatively impact our business, financial condition, results of operations, and prospects. A decline in economic conditions could reduce demand for our products and services and negatively impact the credit quality of loans, which could have an adverse effect on our results of operations. Our clients are located predominantly in Idaho, Montana, Oregon, South Dakota, Washington, and Wyoming. Unlike larger banks that are more geographically diversified, our profitability largely depends on the general economic conditions in these areas. Deterioration in economic conditions could result in the following consequences, any of which could have a material, adverse effect on our business, financial condition, liquidity, and results of operations: • • • • • • demand for our products and services may decline; loan delinquencies, problem assets, and foreclosures may increase; collateral for loans, especially real estate, may decline in value; future borrowing power of our clients may be reduced; the value of our securities portfolio may decline; and the net worth and liquidity of loan guarantors may decline, impairing their ability to honor commitments to us. Additionally, a significant decline in general economic conditions caused by inflation, recession, acts of terrorism, an outbreak of hostilities, or other international or domestic calamities, including wars or international conflicts with respect to which the United States may or may not be directly involved in the Middle East or elsewhere in the world, unemployment, or other economic and geopolitical factors beyond our control, could further impact these local economic conditions and negatively affect our business and results of operations. Deflationary pressures, while possibly lowering our operating costs, could also have a significant negative effect on our borrowers, especially our business borrowers, and the values of underlying collateral securing loans, which could negatively affect our business, financial condition, and results of operations. 17 If we experience loan credit losses in excess of estimated amounts, our earnings could be adversely affected. The risk of credit losses on loans varies with, among other things, general economic conditions, the composition of our loan portfolio, the creditworthiness of the borrower over the term of the loan, and, in the case of a collateralized loan, the value and marketability of the collateral for the loan. We maintain an allowance for credit losses based upon, among other things, historical experience, delinquency trends, economic conditions, and regular reviews of loan portfolio quality. Based upon such factors, management makes various assumptions and judgments about the ultimate collectability of our loan portfolio and provides an allowance for credit losses. These assumptions and judgments are complex and difficult to determine given the significant uncertainty surrounding future conditions in the general economy and banking industry. If management’s assumptions and judgments prove to be incorrect and the allowance for credit losses is inadequate, or if banking authorities or regulations require us to increase the allowance for credit losses, our net income may be adversely affected. As a result, an increase in credit losses could have a material adverse effect on our earnings, financial condition, results of operations, and prospects. The soundness of other financial institutions could adversely affect the Company. Financial services companies are interrelated as a result of trading, clearing, counterparty, or other relationships. We have exposure to many different industries and counterparties. For example, we execute transactions with counterparties in the financial services industry, including brokers and dealers, commercial banks, investment banks, and other institutional clients. As a result, defaults by, or even rumors or questions about, one or more financial services companies or the financial services industry generally have led to market-wide liquidity problems and could lead to losses or defaults by us or by other institutions. Many of these transactions expose us to increased credit risk in the event of default of a counterparty or client. We may be adversely affected by declining oil and gas prices, and declining demand for coal could negatively impact the demand and credit quality of loans. Oil and gas drilling and production in and adjacent to our footprint have been important contributors to our region’s economic growth. As of December 31, 2020, our direct exposure to the oil and gas industry was approximately $75.9 million in loan commitments, including approximately $57.3 million advanced to oil and gas service companies. As of December 31, 2020, we also had commitments to lend an additional $18.6 million to oil and gas borrowers. These borrowers may be significantly affected by volatility in oil and gas prices and declines in the level of drilling and production activity. A prolonged period of low oil and gas prices or other events that result in a decline in drilling activity could have a negative impact on the economies of our market areas and on our clients. As of December 31, 2020, 19.7% of our outstanding oil and gas loans were criticized. Additionally, adverse developments in the demand for coal due to tightening environmental regulations, the suspension of new coal leasing on federal lands, slower growth in electricity demand, and fuel competition from low natural gas prices may impact the economies of the Powder River Basin in Montana and Wyoming. Adverse developments in the energy sector could have spillover effects on the broader economies of our market areas, including commercial and residential real estate values and the general level of economic activity. The State of Wyoming derives a significant portion of its operating budget from energy extraction and related industries. As such, reductions in oil, gas, and coal-related revenues may have additional negative economic implications for the State of Wyoming. There is no assurance that our business, financial condition, results of operations, and cash flows will not be adversely impacted by increases in non-performing oil and gas loans, or by the direct and indirect effects of current and future conditions in the energy industry. Liquidity Risks We are subject to liquidity risks which could impair our cash flows and adversely affect the Company. Liquidity is the ability to meet current and future cash flow needs on a timely basis at a reasonable cost. Our liquidity is used to make loans and repay deposit liabilities as they become due or are demanded by clients. Potential alternative sources of liquidity include federal funds purchased and securities sold under repurchase agreements. We maintain a portfolio of investment securities and hold overnight funds that may be used as a secondary source of liquidity to the extent the securities are not pledged for collateral. Other potential sources of liquidity include the sale of loans, the utilization of available government and regulatory assistance programs, the ability to acquire brokered deposits, the issuance of additional collateralized borrowings such as Federal Home Loan Bank advances, the issuance of debt or equity securities, and borrowings through the Federal Reserve’s discount window. Without sufficient liquidity from these potential sources, we may not be able to meet the cash flow requirements of our depositors and borrowers. 18 Additionally, our access to funding sources in amounts adequate to finance our activities or on terms that are acceptable to us could be impaired by factors specific to us, the financial services industry, or the economy in general. Factors that could reduce our access to liquidity sources include a downturn in our local or national economies, difficult or illiquid credit markets, or adverse regulatory actions against us. A failure to maintain adequate liquidity could have a material, adverse effect on our regulatory standing, business, financial condition, and results of operations. Loss of deposits or a change in deposit mix could increase the Company’s funding costs and negatively affect the Company’s operations. Deposits are a low cost and stable source of funding. We depend on checking and savings, negotiable order of withdrawal, and money market deposit account balances and other forms of client deposits as our primary source of funding. The availability of internet banking products has increased the mobility of client deposits. We compete with banks and other financial institutions for deposits. Funding costs may increase because the Company may lose deposits and replace them with more expensive sources of funding. Clients may shift their deposits into higher-cost products or the Company may need to raise its interest rates to remain competitive in the marketplace. Higher funding costs reduce the Company’s net interest income and net income. Market Risks Changes in interest rates may have an adverse effect on demand for our products and services and on our profitability. Our earnings and cash flows are largely dependent on net interest income, which is the difference between interest income earned on interest-earning assets, such as loans and investment securities, and interest expense paid on interest- bearing liabilities, such as deposits and borrowed funds. The level of net interest income is primarily a function of the average balance of interest-earning assets, the average balance of interest-bearing liabilities, and the spread between the yield on such assets and the cost of such liabilities. The narrowing of interest rate spreads could adversely affect our earnings and financial condition. We cannot control or predict with certainty changes in interest rates. Regional and local economic conditions, competitive pressures, and the policies of regulatory authorities, including monetary policies of the Federal Open Market Committee, affect interest income and interest expense. Changes in monetary policy, including changes in interest rates, could influence not only the interest we receive on loans and securities and the amount of interest we pay on deposits and borrowings, but could also adversely affect (1) our ability to originate loans and obtain deposits, (2) the fair value of our financial assets and liabilities, including mortgage servicing rights, (3) our ability to realize gains on the sale of assets, and (4) the average duration of our mortgage-backed securities and collateralized mortgage obligations portfolios. For example, rising interest rates could adversely affect our mortgage banking business because higher interest rates could cause clients to apply for fewer mortgages. Similarly, rising interest rates would increase the required periodic payment for variable rate loans and may result in an increase in non- performing loans. Additionally, rising interest rates may increase the cost of our deposits, which are a primary source of funding. Any substantial, unexpected, or prolonged change in market interest rates could have a material, adverse effect on our cash flows, financial condition, and results of operations. Changes in interest rates can also affect the slope of the yield curve. A decline in the current yield curve or a flatter or inverted yield curve could cause our net interest income and net interest margin to contract, which could have a material adverse effect on our net income and cash flows, as well as the value of our assets. An inverted yield curve may also adversely affect the yield on investment securities by increasing the prepayment risk of any securities purchased at a premium. A flattening or inversion of the yield curve or a negative interest rate environment in the United States could create downward pressure on our net interest margin. Changes in interest rates could also have a negative impact on our results of operations by reducing the ability of borrowers to repay their current loan obligations or by reducing our margins and profitability. As of December 31, 2020, 44.4% of our loans were advanced to our clients on a variable or adjustable-rate basis. As a result, an increase in interest rates could result in increased loan defaults, foreclosures, and charge-offs and could necessitate further increases to the allowance for credit losses, any of which could have a material adverse effect on our business, financial condition, or results of operations. In addition, a decrease in interest rates could negatively impact our margins and profitability. 19 Changes to United States trade policies and other factors beyond the Company’s control, including the imposition of tariffs and retaliatory tariffs, may adversely impact our business, financial condition, and results of operations. Changes to United States trade policies, legislation, treaties, and tariffs, including trade policies and tariffs affecting other countries, including China, countries comprising the European Union or Middle East, Canada, and Mexico, and retaliatory tariffs by such countries, could materially harm our business. Tariffs and retaliatory tariffs have been imposed, and additional tariffs and retaliatory tariffs have been discussed. Such tariffs, retaliatory tariffs, or other trade restrictions on products and materials our clients import or export, including, among others, agricultural and oil and gas products, could cause the prices of our clients’ products to increase, which could reduce demand for such products, or reduce our clients’ margins, which would adversely impact their revenues, financial results, and ability to service debt. This in turn could adversely affect our financial condition and results of operations. In addition, to the extent changes in the political environment have a negative impact on us or on the markets in which we operate, our business, results of operations, and financial condition could be materially and adversely impacted. On October 1, 2018, the United States, Mexico, and Canada agreement (“USMCA”), or new trade deal, replaced the North American Free Trade Agreement. The USMCA entered into force on July 1, 2020. The full impact of the USMCA on us, our clients, and on the economic conditions in our states is currently unknown and, thus, could adversely impact our business, financial condition, and results of operations. The Company may experience significant competition from new or existing competitors, which may reduce its client base or cause it to lower prices for its products and services in order to maintain market share. There is intense competition among banks in the Company’s market area. In addition, the Company competes with other providers of financial services, such as savings and loan associations, credit unions, consumer finance companies, securities firms, insurance companies, commercial finance and leasing companies, factoring companies, the mutual funds industry, financial technology (“fin-tech”) companies, full-service brokerage firms, and discount brokerage firms, some of which are subject to less extensive regulations than us with respect to the products and services they provide. Our success depends, in part, on our ability to adapt our products and services to evolving industry standards and client expectations. There is increasing pressure to provide products and services at lower prices. Lower prices can reduce our net interest margin and revenues from our fee-based products and services. In addition, the adoption of new technologies by competitors, including internet banking services, mobile applications, and advanced ATM functionality, could require us to make substantial expenditures to modify or adapt our existing products and services. Also, these and other capital investments in our business may not produce expected growth in earnings anticipated at the time of the expenditure. The Company may not be successful in introducing new products and services, achieving market acceptance of its products and services, anticipating or reacting to consumers’ changing technological preferences, or developing and maintaining loyal clients. In addition, we could lose market share to the shadow banking system or other non-traditional banking organizations. Some of our larger competitors may have greater capital and resources than the Company, higher lending limits, and products and services not offered by us. Any potential adverse reactions to our financial condition or status in the marketplace, as compared to its competitors, could limit our ability to attract and retain clients and to compete for new business opportunities. The inability to attract and retain clients or to effectively compete for new business may have a material and adverse effect on our financial condition and results of operations. The Company also experiences competition from non-bank companies inside and outside of its market area and, in some cases, from companies other than those traditionally considered financial sector participants. In particular, technology companies have begun to focus on the financial sector and offer software and products primarily over the internet, with an increasing focus on mobile device delivery. These companies generally are not subject to regulatory requirements comparable to those to which financial institutions are subject, and may accordingly realize certain cost savings and offer products and services at more favorable rates and with greater convenience to the client. For example, a number of companies offer bill pay and funds transfer services that allow clients to avoid using a bank. Technology companies are generally positioned and structured to quickly adapt to technological advances and directly focus resources on implementing those advances. This competition could result in the loss of fee income and client deposits and related income. In addition, changes in consumer spending and saving habits could adversely affect our operations, and the Company may be unable to develop competitive and timely new products and services in response. As the pace of technology and change advance, continuous innovation is expected to exert long-term pressure on the financial services industry. 20 Many of our loans held for investment and our obligations for borrowed money are priced based on variable interest rates tied to the London Inter-Bank Offered Rate, or LIBOR, which may no longer be available, or may become unreliable, as a result of the United Kingdom’s Financial Conduct Authority ceasing to require the submission of LIBOR quotes as of December 31, 2021. LIBOR has been used extensively in the United States as a reference rate for various financial contracts, including adjustable-rate loans, asset-backed securities, and interest rate swaps. The United Kingdom’s Financial Conduct Authority, which regulates LIBOR, announced that it intends to stop persuading or compelling banks to submit LIBOR rates after 2021, which means the continuation of LIBOR cannot be guaranteed after 2021. In November 2020, however, the administrator of LIBOR announced it will consult on its intention to extend until June 30, 2023, the publication of the U.S. dollar LIBOR offered rates other than the one week and two month U.S. dollar LIBOR offered rates. Regardless, the Federal Reserve, FDIC and the Office of the Comptroller of the Currency, because of concerns associated with consumer protection, litigation and reputational risks that could in turn create safety and soundness risks, have encouraged banks to cease entering into new contracts that use U.S. dollar LIBOR as a reference rate as soon as practical and in any event by the end of the year. The potential cessation of or practical inability to use LIBOR quotes or the future unavailability or unreliability of LIBOR creates substantial risks to the banking industry, including us. Unless alternative rates can be negotiated and become accepted, our variable-rate loans, funding, and derivative obligations that specify the use of a LIBOR index would no longer be able to adjust as anticipated. This could adversely affect our asset and liability management and could lead to more asset and liability mismatches and interest rate risk unless appropriate LIBOR alternatives are developed. It could also disrupt the capital and credit markets as a result of confusion or uncertainty. The Federal Reserve has sponsored the Alternative Reference Rates Committee, or ARRC, which serves as a forum to coordinate and track planning as market participants currently using LIBOR consider (a) transitioning to alternative reference rates where it is deemed appropriate and (b) addressing risks in legacy contracts language given the possibility that LIBOR might cease publication. On April 3, 2018, the Federal Reserve began publishing three new reference rates, including the Secured Overnight Financing Rate, or SOFR. ARRC has recommended SOFR as the alternative to LIBOR and published fallback interest rate consultations for public comment as well as a Paced Transition Plan to SOFR use. The Financial Stability Board has taken an interest in LIBOR and possible replacement indices as a matter of risk management. The International Organization of Securities Commissions, or IOSCO, has been active in this area and is expected to call on market participants to have backup options if a reference rate, such as LIBOR, ceases publication. The International Swap Dealers Association has published guidance on interest rate benchmarks and alternatives in July and August 2018. It cannot be predicted whether SOFR or another index or indices will become a market standard that replaces LIBOR, and if so, the effects on our clients, our future results of operations, or financial condition. The market transition away from LIBOR to an alternative reference rate is complex. If LIBOR rates are no longer available and we are required to implement replacement reference rates for the calculation of interest rates under our loan agreements with borrowers, we may incur significant expense in effecting the transition and may be subject to disputes or litigation with our borrowers over the appropriateness or comparability of the replacement reference rates to LIBOR. The replacement reference rates could also result in a reduction of our interest income. We may also receive inquiries and other actions from regulators in respect to the Company’ preparation and readiness for the replacement of LIBOR with alternative reference rates. Operational Risks Our Company faces cyber-security risks, including “denial-of-service attacks,” “hacking,” and “identity theft” that could result in the disclosure of confidential information, adversely affect our business or reputation, and create significant legal and financial exposure. Our computer systems and network infrastructure are subject to security risks and could be susceptible to cyber-attacks, such as denial-of-service attacks, hacking, malware, terrorist activities, or identity theft. Financial services institutions and companies engaged in data processing have reported breaches in the security of their websites or other systems, some of which have involved sophisticated and targeted attacks intended to obtain unauthorized access to confidential information, destroy data, disable or degrade service, or sabotage systems, often through the introduction of computer viruses, malware, ransomware, cyber-attacks, and other means. Denial-of-service attacks have been launched against a number of large financial services institutions, primarily resulting in inconvenience. Future ransomware and cyber-attacks could be more disruptive and damaging. Hacking and identity theft risks, in particular, could cause serious reputational harm to the Company and the Bank. 21 The hardware and software we purchase from suppliers to facilitate financial services and perform company operations are also at risk of having embedded malware, viruses, and other methods intended to develop unauthorized access to confidential information. These types of attacks, known as “supply-chain attacks”, have become more prevalent and are creating additional risks through the solutions and tools upon which we rely. While we have a third-party risk management program to oversee our vendors and procurement, our ability to successfully mitigate these risks that occur in the hardware and software of these vendors is limited. To the extent we experience supply-chain attacks, our business and reputation could be materially adversely affected. In addition, we provide our clients with the ability to bank remotely, including online, through their mobile device, and over the telephone. The secure transmission of confidential information over the internet and other remote channels is a critical element of remote banking. Our network could be vulnerable to unauthorized access, computer viruses, malware, phishing schemes, and other internal and external security breaches. We may be required to spend significant capital and other resources to protect against threats, or to alleviate problems caused by security breaches or malicious software. To the extent that our activities or the activities of our clients involve the storage and transmission of confidential information, security breaches, and viruses could expose us to claims, regulatory scrutiny, litigation, and other possible liabilities. Despite efforts to ensure the integrity of our systems, cyber threats are rapidly evolving and we may not be able to anticipate or prevent all such attacks, nor may we be able to implement guaranteed preventive measures against such security breaches. The techniques used by cyber criminals change frequently, may not be recognized until launched or later, and can originate from a wide variety of sources, including outside groups such as external service providers. These risks may increase in the future as we continue to increase our mobile payment and other internet-based product offerings and expand our internal usage of web-based products and applications. Further, targeted social engineering attacks may be sophisticated and difficult to prevent and our employees, clients, or other users of our systems may be fraudulently induced to disclose sensitive information, allowing cyber criminals to gain access to our systems or data of our clients. A successful penetration or circumvention of system security could cause us serious negative consequences, including significant disruption of operations, misappropriation of confidential information, or damage to our computers or systems or to those of our clients and counterparties. A successful security breach could result in violations of applicable privacy and other laws, financial loss to us or to our clients, loss of confidence in our security measures, significant litigation exposure, and harm to our reputation, all of which could have a material adverse effect on our business, financial condition, results of operations, and prospects. Privacy, information security, and data protection laws, rules, and regulations could affect or limit how we collect and use personal information, increase our costs, and adversely affect our business opportunities. We are subject to various privacy, information security, and data protection laws, including: (i) certain limitations on our ability to share non-public personal information about our clients with non-affiliated third parties; (ii) requirements for certain disclosures to clients about our information collection, sharing, and security practices and that afford clients the right to “opt out” of any information sharing by us with non-affiliated third parties (with certain exceptions); and (iii) requirements that we develop, implement, and maintain a written information security program containing appropriate safeguards based on our size and complexity, the nature and scope of our activities, and the sensitivity of client information we process, as well as plans for responding to data security breaches. Compliance with current or future privacy, data protection, and information security laws (including those regarding security breach notification) affecting client or employee data could result in higher compliance and technology costs and could restrict our ability to provide certain products and services, which could have a material adverse effect on our business, financial conditions, or results of operations. Our failure to comply with privacy, data protection, and information security laws could result in potentially significant regulatory or governmental investigations or actions, litigation, fines, sanctions, and damage to our reputation, which could have a material adverse effect on our business, financial condition, or results of operations. Our goodwill may become impaired, which may adversely impact our results of operations and financial condition. The excess purchase price over the fair value of net assets from acquisitions, or goodwill, is evaluated for impairment at least annually and on an interim basis if an event or circumstance indicates it is likely an impairment has occurred. In testing for impairment, the Company performs a qualitative assessment to determine whether it is more likely than not that the fair value of a reporting unit is in excess of its carrying value. If it is not more likely than not that the fair value of the reporting unit is in excess of the carrying value, the fair value of net assets is estimated based on analyses of our market value, discounted cash flows, and peer values. Consequently, the determination of the fair value of goodwill is sensitive to market-based economics and other key assumptions. Variability in market conditions or in key assumptions could result in impairment of goodwill, which is recorded as a non-cash adjustment to income. An impairment of goodwill could have a material adverse effect on our business, financial condition, and results of operations. As of December 31, 2020, we had goodwill of $621.6 million, or 31.7% of our total stockholders’ equity. 22 We may invest in Collateralized Loan Obligations (CLO) securities or CLO warehouse financing structures, which may expose us to losses in connection with such investments. We may invest in certain CLO subordinated notes or preference shares or other CLO securities. The subordinated notes or preference shares of a CLO are usually entitled to all of the income generated by the CLO after the CLO pays all of the interest due on the notes and its expenses. However, there will be little or no income available to the CLO subordinated notes or preference shares if there are defaults on the underlying collateral in excess of certain amounts or if the recoveries on such defaulted collateral are less than certain amounts. Similarly, any investment we make in debt securities of a CLO that are junior to other debt securities of the entity will be payable only in the event that the underlying collateral generates sufficient income to make the interest payments on the securities of the CLO that are senior to any such junior debt instruments. Consequently, the value of any investment we make in the subordinated notes, preference shares, or other debt securities of CLOs could decrease substantially depending on the performance of the underlying collateral in such CLO. In addition, the subordinated notes, preference shares and other debt securities of CLOs are generally illiquid, and because they represent a leveraged investment in the CLO’s assets, their value will generally fluctuate more than the values of the underlying collateral. In addition we may invest in the subordinated notes or preference shares of CLO warehouse financing structures. Such investments will be entitled to all income generated by the underlying investments acquired during the warehouse period after the financing cost from warehouse credit facility is paid, but will bear the first loss incurred on such investments if they decrease in value and the CLO or other investment product is unable to be issued and the warehouse portfolio is liquidated. In such event, the subordinate note or preference share investors in such CLO warehouse would be exposed to losses up to the total amount of such investment if the CLO or other investment product does not close and the underlying investment pool is liquidated for a loss. Such a scenario may become more likely in times of economic distress or when the loans comprising the collateral pool of such warehouse, although still performing, may have declined in market value. Although we generally expect CLO warehouse arrangements to last approximately six to nine months before a CLO is issued, the CLO issuer may not be able to complete the issuance within the expected time frame or at all. A decline in market value may negatively impact the value of our CLOs and therefore negatively impact our financial condition and results of operations. The Company relies on other companies to provide certain key components of its business infrastructure. We are reliant upon certain external vendors to provide products and services necessary to maintain our day-to-day operations and we outsource many of our major systems, such as certain data processing, loan servicing, and deposit processing systems. While the Company has selected these external vendors and systems carefully and continues to manage and oversee these vendors, it does not control their operations. Failure of certain external vendors or systems to perform or provide services in accordance with contractual arrangements could be disruptive to our operations and limit our ability to provide certain products and services demanded by our clients. Because our information technology and telecommunications systems interface with and depend on third-party systems, we could experience disruptions if demand for such services exceeds capacity or such third-party systems fail or experience interruptions. If significant, sustained, or repeated, a system failure or disruption could compromise our ability to operate effectively, damage our reputation, result in a loss of client business, and/or subject us to additional regulatory scrutiny and possible financial liability. Any of the failures or disruptions mentioned above could negatively impact our financial condition, results of operations, cash flows, and prospects. Replacing these third-party vendors could also entail significant delay and expense. Our reputation is very important to our ability to maintain, attract and retain client relationships and if our reputation were impaired it, could have an adverse effect on the Company. Our clients expect us to deliver personalized financial services with the highest standards of performance, professionalism, compliance, and ethics. Damage to our reputation could undermine retention of our current clients and our ability to attract potential clients while also impairing the confidence of our counterparties and vendors, the result of which affects our ability to effect transactions. Maintaining our reputation depends, in part, on our ability to identify and address issues that may arise such as potential conflicts of interest, anti-money laundering, fair lending issues, client personal information and privacy issues, cyber-security, employee, client and other third-party fraud, record-keeping, regulatory investigations, and any litigation that may arise from the failure or perceived failure of us to comply with legal and regulatory requirements. To maintain our reputation, we also must prevent third parties from infringing on the “First Interstate Bank” brand and associated trademarks and our other intellectual property. Our reputation or prospects could be significantly damaged by adverse publicity or negative information regarding our Company, whether or not true, that may be posted on social media, reported in the news, or posted in other parts of the internet. Defending of our reputation, trademarks, and other intellectual property, including through litigation, could result in costs that could have a material adverse effect on our business, financial condition, or results of operations. 23 We are dependent upon the services of our management team and directors and if the services of any of them were to become unavailable, it could have an adverse effect on the Company. Our future success and profitability is substantially dependent upon the management skills of our executive officers and directors, many of whom have held officer and director positions with us for many years. We currently have employment agreements or non-competition agreements with five of our key executives: Kevin P. Riley, our president and chief executive officer; Marcy D. Mutch, our chief financial officer; Jodi Delahunt Hubbell, our chief operating officer; and Philip G. Gaglia, our chief risk officer. We do not have employment agreements with the other executives. The unanticipated loss or unavailability of key employees could harm our ability to operate our business or execute our business strategy. We may not be successful in retaining key employees or finding and integrating suitable successors in the event of key employee loss or unavailability. We may not be able to attract and retain qualified employees to operate our business effectively, which could have an adverse effect on our business. As a result of low unemployment rates in our historical geographic footprint and the Northwest region of the United States, there is substantial competition for qualified personnel in our markets. It may be difficult for us to attract and retain qualified employees at all management and staffing levels. Failure to attract and retain employees and maintain adequate staffing of qualified personnel could adversely impact our operations and our ability to execute our business strategy. Furthermore, relatively low unemployment rates may lead to significant increases in salaries, wages, and employee benefits expenses as we compete for qualified and skilled employees, which could negatively impact our results of operations and prospects. Costs associated with repossessed properties, including environmental remediation, may adversely impact our results of operations, cash flows, and financial condition. A significant portion of our loan portfolio is secured by real property. During the ordinary course of business, we may foreclose on and take title to properties serving as collateral for certain loans. There are significant costs associated with our ownership of these properties including, but not limited to, personnel costs, taxes and insurance, completion and repair costs, and valuation adjustments. Additionally, we may experience unfavorable pricing in connection with our disposition of foreclosed properties. These costs, along with unfavorable pricing upon disposition, may adversely affect our cash flows, financial condition, and results of operations. If hazardous or toxic substances are found on these properties, we may be liable for remediation costs, as well as for personal injury and property damage. Environmental laws may require us to incur substantial expenses and may materially reduce the affected property’s value or limit our ability to use or sell the affected property. In addition, future laws or more stringent interpretations or enforcement policies with respect to existing laws may increase our exposure to environmental liability. The remediation costs and any other financial liabilities associated with an environmental hazard could have a material, adverse effect on our cash flows, financial condition, and results of operations. If our systems of internal operating controls were to become ineffective, our financial information could be negatively impacted. We establish and maintain systems of internal operational controls that provide us with critical information used to manage our business. These systems are subject to various inherent limitations, including cost, judgments used in decision- making, assumptions about the likelihood of future events, the soundness of our systems, the possibility of human error, and the risk of fraud. Moreover, controls may become inadequate because of changes in conditions or processes and the risk that the degree of compliance with policies or procedures may deteriorate over time. Because of these limitations, any system of internal operating controls may not be successful in preventing all errors or fraud or in making all material information known in a timely manner to the appropriate levels of management. From time-to-time, control deficiencies and losses from operational malfunctions or fraud have occurred and may occur in the future. Any future deficiencies, weaknesses, or losses related to internal operating control systems could have an adverse effect on our business, financial condition, results of operations, and prospects. 24 We may not effectively implement new technology-driven products and services or be successful in marketing these products and services to our clients, which could negatively impact our business. The financial services industry is continually undergoing rapid technological change with frequent introductions of new technology-driven products and services. The effective use of technology enables financial institutions to better serve clients and perform more efficiently. Our future success depends, in part, upon our ability to use technology to provide products and services that will satisfy clients’ demands for convenience, as well as create additional efficiencies in our operations. Many of our competitors have substantially greater resources to invest in technological improvements. We may not be able to effectively implement new technology-driven products and services or be successful in marketing these products and services to our clients. Failure to successfully keep pace with technological change affecting the financial services industry could have a material, adverse impact on our business and, in turn, on our financial condition, results of operations, and prospects. Strategic Risks If we are not able to execute on our intended expansion plans, our business, reputation, and results of operations could be materially, adversely affected. Our current plans for organic growth and growth through merger and acquisition opportunities in our core and other markets may be adversely affected by a number of factors, including competition from other banking and financial institutions, many of which have resources significantly greater than ours, and a decline in the number of attractive financial institution acquisition targets headquartered in our geographic markets. This competition, especially as the number of acquisition targets decreases, could, for example, increase acquisition purchase prices in our targeted areas for growth, which could reduce our potential returns on successfully completed acquisitions or otherwise make such acquisitions too expensive to be attractive to consummate. Furthermore, as a regulated financial institution, our ability to pursue or complete attractive acquisitions or de novo or other expansion opportunities could be negatively impacted by regulatory approval issues, including delays in obtaining required approvals or an inability to obtain required regulatory approvals on terms deemed reasonable to us or at all. In considering whether to approve or deny our expansion proposals, government regulators consider our capital, liquidity, profitability, regulatory compliance, including with respect to consumer protection laws and CRA obligations, and levels of goodwill and intangibles. They also must consider, from time-to-time, regulatory initiatives designed to limit systemic risk that may have the effect of limiting our desired expansion. If our regulators are not satisfied with one or more of the foregoing financial metrics, or regulatory initiatives turn out to be unexpected impediments to growth, our expansion opportunities could be delayed or diminished, all to the detriment of our financial results. Difficulties in combining the operations of acquired entities or assets with our own operations or assessing the effectiveness of businesses in which we make strategic investments or with which we enter into strategic contractual relationships may prevent us from achieving the expected benefits from these acquisitions, investments, or relationships. Acquisitions of other companies or of financial assets and related deposits and other liabilities present risks and uncertainties to us based in part on the nature of the business or assets and liabilities acquired. For example, if an acquisition includes loan portfolios, the extent of credit losses following completion of the acquisition could adversely affect our combined results of operations. Similarly, if an acquisition includes deposits, the extent of deposit attrition after closing could adversely affect our combined results of operations. Acquisitions of banking companies typically include both loans and deposits, and the extent of any post-closing credit losses and deposit attrition could be affected by a number of factors, including the state of the economy following the acquisition and the geographic area or markets in which the target operates. If the markets were to react negatively to the announcement of the acquisition, or if the economy were to suffer or enter into a recession following an acquisition, we may not timely, or at all, achieve the expected benefits of an acquisition and our business and the value of our Class A common stock could be harmed. 25 Acquisitions of other companies or of financial assets and related deposits and other liabilities also present risks and uncertainties to us in addition to those presented by the nature of the business acquired. These risks include unanticipated costs incurred in connection with the integration of the acquired business. For example, the total cost and time required to complete the integration successfully could be greater than estimated and result in higher acquisition costs than expected or a loss of market opportunity due to any such delay. Furthermore, the results of litigation or governmental investigations that may have been pending at the time of an acquisition, or may be filed or commenced thereafter, as a result of an acquisition or otherwise, may be materially underestimated and harm our operating results more than originally anticipated. On the other hand, some or all of the anticipated benefits of a particular acquisition, such as cost savings from synergies or strategic gains from being able to offer product sets to a broader potential client base, may not be realized. It can take longer or require greater resources than originally expected to achieve any of such benefits. It also may prove impossible to achieve them at all or in their entirety as a result of unexpected factors or events. As a result, any acquisition could ultimately prove dilutive to our equity and shareholders’ earnings per share, thereby adversely affecting our financial condition and results of operations. Acquisitions may also result in business disruptions that could cause clients to remove their accounts from us and move their business to competing financial institutions. It is possible that the integration process related to acquisitions could also result in the disruption of our ongoing businesses or inconsistencies in standards, controls, procedures, and policies that could adversely affect our ability to maintain relationships with clients and employees. The loss of key employees in connection with an acquisition could also adversely affect our ability to successfully conduct our business. Acquisition and integration efforts could divert management attention and resources, which could have an adverse effect on our financial condition and results of operations. Additionally, the operation of the acquired branches may adversely affect our existing profitability, and we may not be able to achieve results in the future similar to those achieved by the existing banking business or manage growth resulting from the acquisition effectively, any of which could harm our business and reputation. In addition to post-acquisition integration related risks, inherent uncertainties exist when assessing or integrating the operations of another business into which we may make an investment or with which we may enter into a commercial relationship. We may not be able to fully achieve the strategic objectives and planned operating efficiencies relevant to an investment or strategic relationship. In addition, the markets and industries in which we and the potential investment targets operate are highly competitive. Investment targets and commercial contract counterparties may lose clients or customers or otherwise perform poorly or unprofitably, or in the case of a strategic relationship, cause us to lose clients or perform poorly or unprofitably. Future investment activities and efforts to monitor or reap the benefits of a new strategic relationship may require us to devote substantial time and resources and may cause these investments and relationships to be unprofitable or cause us to be unable to pursue other business opportunities, any of which could harm our business. Common Stock Risks We qualify as a “controlled company” under the NASDAQ Marketplace Rules and may rely on exemptions from certain corporate governance requirements. Due to the combined voting power of the members of the Scott family, we qualify as a “controlled company” under the NASDAQ Marketplace Rules. As a “controlled company,” we are exempt from certain NASDAQ corporate governance requirements, including the requirements that: • • • a majority of the board of directors consist of independent directors; the compensation of officers be determined, or recommended to the board of directors for determination, by a majority of the independent directors or a compensation committee comprised solely of independent directors; and director nominees be selected, or recommended for the board of directors’ selection, by a majority of the independent directors or a nominating committee comprised solely of independent directors with a written charter or board resolution addressing the nomination process. Our compensation and governance and nominating committees may not consist entirely of independent directors. As long as we choose to rely on these exemptions from NASDAQ Marketplace Rules, stockholders and other interested parties should be aware, therefore, that decisions concerning executive compensation and director nominations may not be determined solely by the Board’s independent directors and may be adverse to their particular interests. 26 Volatility in the price and volume of our Class A common stock may be unfavorable. The market price of our Class A common stock is volatile and could be subject to wide fluctuations in price in response to various factors, some of which are beyond our control. These factors include: prevailing market conditions; our historical performance and capital structure; estimates of our business potential and earnings prospects; an overall assessment of our management; conversion by our Class B shareholders of their shares into Class A common stock to liquidate their holdings; our performance relative to our peers; • • • • • • • market demand for our shares; • • • perceptions of the banking industry in general; political influences on investor sentiment; and consumer confidence. At times, the stock markets, including the NASDAQ Stock Market on which our Class A common stock is listed, may experience significant price and volume fluctuations. As a result, the market price of our Class A common stock is likely to be similarly volatile and investors in our Class A common stock may experience a decrease in the value of their shares, including decreases unrelated to our operating performance or prospects. Further, because our Class B common stock is convertible on a share-for-share basis into Class A common stock and the share price of our Class B common stock is based upon the share price of our Class A common stock, our Class B common stock price is similarly impacted by the factors affecting our Class A common stock. In addition, following periods of volatility in the overall market and the market price of a company’s securities, securities class action litigation has often been instituted against companies. This litigation, if instituted against us, could result in substantial costs and a diversion of our management’s attention and resources. “Anti-takeover” provisions and the regulations to which we are subject may also make it more difficult for a third party to acquire control of us, even if the change in control could be deemed beneficial to stockholders. We are a financial and bank holding company incorporated in the State of Montana. Anti-takeover provisions in Montana law and our articles of incorporation and bylaws, as well as regulatory approvals that would be required under federal law, could make it more difficult for a third party to acquire control of us and may prevent stockholders from receiving a premium for their shares of our Class A common stock. These provisions could adversely affect the market price of our Class A common stock and could reduce the amount stockholders might receive if we are sold. Our articles of incorporation provide that our Board may issue up to 100,000 shares of preferred stock, in one or more series, without stockholder approval and with such terms, conditions, rights, privileges, and preferences as the Board may deem appropriate. In addition, our articles of incorporation provide for staggered terms for our Board and limitations on persons authorized to call a special meeting of stockholders. In addition, certain provisions of Montana law may have the effect of inhibiting a third party from making a proposal to acquire us or of impeding a change of control under circumstances that otherwise could provide the holders of our common stock with the opportunity to realize a premium over the then-prevailing market price of such Class A common stock. Further, the acquisition of specified amounts of our common stock (in some cases, the acquisition or control of more than 5% of our voting stock) may require certain regulatory approvals, including the approval of the Federal Reserve and one or more of our state banking regulatory agencies. The filing of applications with these agencies and the accompanying review process can take several months. Additionally, as discussed above, the holders of the Class B common stock will have voting control of the Company. This and the other factors described above may hinder or even prevent a change in control of us, even if a change in control would be beneficial to our stockholders. Our dividend policy, or our ability to pay dividends, may change. We are a legal entity separate and distinct from our subsidiary Bank. Since we are a holding company with no significant assets other than the capital stock of our subsidiaries, we depend upon dividends from our Bank for a substantial part of our revenue. Accordingly, our ability to pay dividends, cover operating expenses, and acquire other institutions depends primarily upon the receipt of dividends or other capital distributions from the Bank. The ability of our Bank to pay dividends to us is subject to, among other things, its earnings, financial condition, and need for funds, as well as federal and state governmental policies and regulations applicable to us and the Bank, which limit the amount that may be paid as dividends without prior approval. 27 Although we have historically paid dividends to our stockholders, we have no obligation to continue doing so and may change our dividend policy at any time without notice to our stockholders. Holders of our common stock are only entitled to receive such cash dividends as our board of directors may declare out of funds legally available for such payments. The amount of any dividend declaration is subject to our evaluation of our strategic plans, growth initiatives, capital availability, projected liquidity needs, and other factors. An investment in our common stock is not an insured deposit. Our Class A and Class B common stock is not a bank savings account or deposit and, therefore, is not insured against loss by the FDIC, any other deposit insurance fund, or any other public or private entity. As a result, holders of our common stock could lose some or all of their investment. Holders of the Class B common stock have voting control of the Company and are able to determine virtually all matters submitted to stockholders, including potential change in control transactions, and our dual class common stock structure may put downward pressure on the price per share of our Class A common stock. Members of the Scott family control a majority of the voting power of our outstanding common stock. Due to their holdings of common stock, members of the Scott family are able to determine the outcome of virtually all matters submitted to stockholders for approval, including the election of directors, amendment of our articles of incorporation (except when a class vote is required by law or pursuant to our articles of incorporation), any merger or consolidation requiring common stockholder approval, and the sale of all or substantially all of our assets. Accordingly, such holders have the ability to prevent change in control transactions as long as they maintain voting control of the Company. In addition, because these holders have the ability to elect all of our directors, they are able to control our policies and operations, including the appointment of management, the payments of dividends on our common stock, and entering into extraordinary transactions; their interests may not in all cases be aligned with the interests of all stockholders. For example, members of the Scott family have adopted a charter with the intended purpose of reaching a voluntarily consensus on issues considered by the family to be important, and their interests may diverge from the interests of other stockholders. The Scott family members have also entered into a stockholder agreement giving family members a right of first refusal to purchase shares of Class B common stock that are intended to be sold or transferred, subject to certain exceptions, by other family members. This agreement may have the effect of continuing ownership of the Class B common stock and control within the Scott family. This concentrated control limits stockholders’ ability to influence corporate matters. As a result, the market price of our Class A common stock could be adversely affected. In addition, we cannot predict whether our dual class common stock structure, combined with the concentrated control by the Scott family, will result in a lower or more volatile market price of our Class A common stock or in adverse publicity or other adverse consequences. For example, some developers of popular indexes have announced restrictions on including companies with multiple-class voting structures in certain of their indexes. S&P Dow Jones announced that it will no longer admit companies with multiple-class voting structures to certain of its indexes. Because of our dual class common stock structure, we may be excluded from these indexes and we cannot assure you that other stock indexes will not take similar actions. Given the sustained flow of investment funds into passive strategies that seek to track certain indexes, exclusion from stock indexes would likely preclude investment by many of these funds and could make our Class A common stock less attractive to other investors. As a result, the market price of our Class A common stock could be adversely affected. Future equity issuances could result in dilution, which could cause our common stock price to decline. We may issue additional Class A common stock in the future pursuant to current or future employee equity compensation plans or in connection with future acquisitions or financings. Should we choose to raise capital by selling shares of Class A common stock for any reason, the issuance would have a dilutive effect on the holders of our Class A and Class B common stock and could have a material negative effect on the market price of our Class A common stock. In addition, our Class B common stock is convertible into Class A common stock at any time at the sole discretion of the holders of Class B shares or automatically if, on the record date for any meeting of stockholders, the number of outstanding Class B shares constitutes less than 20% of the aggregate number of common stock then outstanding. The common stock is equity and is subordinate to our existing and future indebtedness. Shares of our Class A and Class B common stock are equity interests and do not constitute indebtedness. As such, shares of our Class A and Class B common stock rank junior to all our indebtedness, including any subordinated term loans, subordinated debentures held by trusts that have issued trust-preferred securities, and other non-equity claims on us with respect to assets available to satisfy claims on us. In the future, we may make additional offerings of debt or equity securities or we may issue additional debt or equity securities as consideration for future mergers and acquisitions. 28 General Risk Factors The COVID-19 pandemic has caused a significant global disruption which has adversely affected, and is expected to continue to adversely affect, our business and results of operations, and the future impacts of the COVID-19 pandemic and the U.S. Government response to the pandemic on the global economy could adversely affect our business, results of operations, liquidity, and financial condition. The disease caused by the novel coronavirus (also known as, and referred to herein, as “COVID-19”), which was identified as a pandemic by the World Health Organization, created a global public-health crisis that resulted in challenging economic conditions for households and businesses around the world. Since the onset of the COVID-19 pandemic, Federal, state, and local governments have responded to the COVID-19 pandemic in a variety of ways including, without limitation, by declaring states of emergency, restricting people from gathering in groups or interacting within a certain physical distance (i.e., social distancing), ordering businesses to close or limit operations and ordering people to stay at home (i.e., shelter in place), and imposing travel restrictions (including quarantine requirements). Although many of the restrictions have eased across the country, the pandemic has yet to show sustained signs of decline in the U.S. Some areas may re- impose closures and other restrictions due to increased rates of COVID-19 cases. The economic impact of the COVID-19 pandemic has affected a broad range of industries, including banking, travel, hospitality, and entertainment. There is increasing concern about the longer lasting impact on local businesses, as well as the travel and entertainment industries, resulting from the COVID-19 pandemic. The Federal Reserve returned to a zero-interest rate policy in March 2020 and the U.S. government enacted several fiscal stimulus measures to counteract the economic disruption caused by the COVID-19 pandemic and provide economic assistance to businesses and households. The dramatic lowering of market interest rates in a short period of time had an adverse effect on the Company’s asset yields. The extent of these impacts will depend on future developments, including, among others, governmental, regulatory and private sector actions and responses, new information that may emerge concerning the COVID-19 pandemic, new strains of the virus that causes COVID-19, and actions taken to contain or prevent further spread, each of which are highly uncertain and cannot be predicted. Our business is dependent upon the ability and willingness of our clients to conduct banking and other financial transactions, including the payment of loan obligations. COVID-19 has and continues to disrupt the business, activities, and operations of our clients, which may cause a decline in demand for our products and services and which may, in turn, result in a significant decrease in our business, negatively impacting our liquidity position and financial results. Our financial results could also be impacted by an inability of our clients to meet their loan commitments because of their losses associated with the effects of COVID-19 on their businesses, resulting in increased risk of delinquencies, defaults, foreclosures, declining collateral values, and other losses to our Bank. Moreover, current and future governmental action may temporarily require the Company to conduct business differently with respect to foreclosures, repossessions, payments, deferrals, and other client-related transactions. Furthermore, commercial real estate markets have been particularly impacted by the economic disruption resulting from the COVID-19 pandemic. Accordingly, the federal banking regulatory agencies have expressed concerns about weaknesses in the current commercial real estate market. Failures in our risk management policies, procedures, and controls could adversely affect our ability to manage this portfolio going forward and could result in an increased rate of delinquencies in, and increased losses from, this portfolio, which, accordingly, could have a material adverse effect on our business, financial condition, and results of operations. In addition, our workforce has been, is, and may continue to be impacted by COVID-19. The precautions we are taking to protect the safety and well-being of our employees and clients, including temporary branch and office closures, may be inadequate, and we cannot predict the level of disruption that will occur to our employees’ ability to provide support and service to our clients. The spread could also negatively impact availability of key personnel and employee productivity, as well as the business and operations of third-party service providers who perform critical services for us, which could adversely impact our ability to deliver products and services to our clients. There is pervasive uncertainty surrounding the future economic conditions that will emerge in the months and years following the start of the COVID-19 pandemic. As a result, management is confronted with a significant and unfamiliar degree of uncertainty in estimating the impact of the pandemic on credit quality, revenues, and asset values. Asset quality may deteriorate and the amount of our allowance for credit losses may not be sufficient for future credit losses we may experience. This could require us to increase our reserves and recognize more expense in future periods. The changes in market rates of interest and the impact on our ability to price our products may reduce our net interest income in the future or negatively impact the demand for our products. There is also risk that operational costs could continue to increase as we maintain existing facilities in accordance with health guidelines, which could impact negatively the results of our operations and financial condition. 29 The extent to which the COVID-19 pandemic impacts our business, results of operations, and financial condition, as well as our regulatory capital and liquidity ratios, will depend on future developments that are highly uncertain and cannot be predicted, including the scope and duration of the COVID-19 pandemic, the impact of potential new strains of the virus, and actions taken by governmental authorities and other third parties in response to the pandemic. Our business is subject to the risks of certain global conditions, earthquakes, tsunamis, floods, fires, and other natural catastrophic events. A major catastrophe, such as a pandemic, disease outbreak, or other natural disaster including extreme weather or other events, such as an earthquake, tsunami, flood, fire, winter storms, or other type of natural disaster, could adversely affect our financial condition or result in a prolonged interruption of our business. We have operations and clients in the Northwest, a geographical region that has been or may be affected by disease, earthquake, volcano, tsunami, and flooding activity, which could be adversely impacted by these natural disasters or other severe weather in the region. Unpredictable natural and other disasters could have an adverse effect on the Company in that such events could materially disrupt our operations or the ability or willingness of our clients to access the financial services offered by the Company. These events could reduce our earnings and cause volatility in its financial results for any fiscal quarter or year and have a material, adverse effect on our financial condition and/or results of operations and prospects. None. Item 1B. Unresolved Staff Comments Item 2. Properties Our principal executive offices and one of our banking offices are anchor tenants in an 18-story commercial building located in Billings, Montana. The building is owned by a joint venture limited liability company in which FIB owns a 50.0% interest. We lease approximately 100,193 square feet of office space in the building. We also own a 65,226 square foot building that houses our operations center in Billings, Montana. We provide banking services at 150 locations in Idaho, Montana, Oregon, South Dakota, Washington, and Wyoming, of which 39 properties are leased from independent third parties and 111 properties are owned by us. We believe each of our facilities is suitable and adequate to meet our current operational needs. Item 3. Legal Proceedings In the normal course of business, we may be named or threatened to be named as a defendant in various lawsuits. We record accruals for outstanding legal matters when it is believed to be probable that a loss will be incurred and the amount can be reasonably estimated. Management, following consultation with legal counsel, does not expect the ultimate disposition of any or a combination of any such ongoing or anticipated matters to have a material, adverse effect on our business, financial condition, or operating results. Not applicable. Item 4. Mine Safety Disclosures PART II Item 5. Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities The Class A common stock is listed on the NASDAQ Stock Market under the symbol “FIBK.” As December 31, 2020, we had 1,470 record shareholders, including the Wealth Management division of FIB as trustee for 529,919 shares of Class A common stock held on behalf of 641 individual participants in the Savings and Profit Sharing Plan for Employees of First Interstate BancSystem, Inc., or the Savings Plan. The Class B common stock is not and will not be listed on the NASDAQ Stock Market or any other exchange. Therefore, no trading market is expected to develop in the Class B common stock. Dividends It is our policy to pay a quarterly dividend to all common shareholders. The Board recently approved a quarterly cash dividend amount of $0.41 per share of common stock. We currently intend to continue paying quarterly dividends; however, the Board may change or eliminate the payment of future dividends. 30 Dividend Restrictions For a description of restrictions on the payment of dividends, see Part I, Item 1, “Business — Government Regulation and Supervision — Dividends and Restrictions on Transfers of Funds,” and Part II, Item 7, “Management’s Discussion and Analysis of Financial Condition and Results of Operations — Capital Resources and Liquidity Management” included herein. Sales of Unregistered Securities There were no sales of equity securities by us during the years ended December 31, 2020, 2019, or 2018 that were not registered under the Securities Act of 1933. Purchases of Equity Securities by the Issuer and Affiliated Purchasers The following table provides information with respect to purchases made by or on behalf of us or any “affiliated purchasers” (as defined in Rule 10b-18(a)(3) under the Exchange Act), of our common stock during the three months ended December 31, 2020. Period October 2020 November 2020 December 2020 Total Total Number of Shares Purchased (1) 679,907 222,600 135,842 1,038,349 $ $ Average Price Paid Per Share 34.95 39.19 39.60 36.47 Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs 679,700 222,600 135,842 1,038,142 Maximum Number of Shares That May Yet Be Purchased Under the Plans or Programs 2,320,300 2,097,700 1,961,858 1,961,858 (1) Stock repurchases were redemptions of vested restricted shares tendered in lieu of cash for payment of income tax withholding amounts by participants of the Company’s 2015 Equity Compensation Plan and purchases related to our stock repurchase program. 31 Performance Graph The performance graph below compares the cumulative total shareholder return on our Class A common stock with the cumulative total return on equity securities of companies included in the NASDAQ Composite Index and the SNL U.S. Bank NASDAQ index, measured on the last trading day of each year shown. The SNL U.S. Bank NASDAQ index is a comparative peer index comprised of financial companies, including banks, savings institutions, and related holding companies that perform banking-related functions, listed on the NASDAQ Stock Market. The NASDAQ Composite Index is a comparative broad market index comprised of all domestic and international common stocks listed on the NASDAQ Stock Market. This graph assumes a $100 investment in our Class A common stock on December 31, 2015, and reinvestment of dividends on the date of payment without commissions. The plot points on the graph were provided by SNL Financial LC, Charlottesville, VA. The performance graph represents past performance, which may not be indicative of the future performance of our Class A common stock. Index First Interstate BancSystem, Inc. NASDAQ Composite SNL U.S. Bank NASDAQ 12/31/15 12/31/16 12/31/17 12/31/18 12/31/19 12/31/20 $ 100.00 $ 150.94 $ 145.66 $ 136.55 $ 161.41 $ 166.54 100.00 108.87 141.13 137.12 187.44 271.64 100.00 138.65 145.97 123.04 154.47 132.56 Item 6. Selected Consolidated Financial Data The information previously required by Item 6 of this Form 10-K has been intentionally omitted, as permitted by the SEC in connection with its adoption of its final rules regarding the amendments to modernize, simplify, and enhance identified financial disclosure requirements of registrants, which became effective beginning February 11, 2021. 32 Index ValueTotal Cumulative Returnson $100 Investment Made on December 31, 2015First Interstate BancSystem, Inc.NASDAQ CompositeSNL U.S. Bank NASDAQ12/31/1512/31/1612/31/1712/31/1812/31/1912/31/2050100150200250300 Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations The following discussion and analysis should be read in conjunction with the consolidated financial statements and related notes included elsewhere in this Annual Report on Form 10-K. We make statements in this section that are forward- looking statements within the meaning of the federal securities laws. All of such forward-looking statements are expressly qualified by reference to the cautionary statements provided under the caption “Cautionary Note Regarding Forward- Looking Statements” included on page 1 in Part I of this report. Furthermore, a number of known and unknown factors may cause our actual results, performance or achievements to differ materially from those expressed or implied by the following discussion. Therefore, you are encouraged to read in its entirety the information provided under the caption “Risk Factors” included under Item 1A in Part I of this report for a discussion of risk factors that may negatively impact our expected results, performance, or achievements discussed below. Executive Overview We are a financial and bank holding company headquartered in Billings, Montana. As of December 31, 2020, we had consolidated assets of $17.6 billion, deposits of $14.2 billion, loans held for investment of $9.8 billion, and total stockholders’ equity of $2.0 billion. We operate 150 banking offices, including detached drive-up facilities, in communities across Idaho, Montana, Oregon, South Dakota, Washington, and Wyoming. Through our bank subsidiary, FIB, we deliver a comprehensive range of banking products and services—including online and mobile banking—to individuals, businesses, municipalities, and others throughout our market areas. Our clients participate in a wide variety of industries, including agriculture, construction, education, energy, governmental services, healthcare, mining, professional services, retail, tourism, and wholesale trade. Our Business Our principal business activity is lending to, accepting deposits from, and conducting financial transactions with and for individuals, businesses, municipalities, and other entities. We derive our income principally from interest charged on loans and, to a lesser extent, from interest and dividends earned on investments. We also derive income from non-interest sources such as fees received in connection with various lending and deposit services; trust, employee benefit, investment, and insurance services; mortgage loan originations, sales, and servicing; merchant and electronic banking services; and, from time-to-time, gains on sales of assets. Our principal expenses include interest expense on deposits and borrowings, operating expenses, provisions for credit losses, and income tax expense. Our loan portfolio consists of a mix of real estate, consumer, commercial, agricultural, and other loans, including fixed and variable rate loans. Our real estate loans comprise commercial real estate, construction (including residential, commercial, and land development loans), residential, agricultural, and other real estate loans. Fluctuations in the loan portfolio are directly related to the economies of the communities we serve. While each loan originated must meet minimum underwriting standards established in our credit policies, bankers are granted discretion within pre-approved limits in approving and pricing loans to assure that the banking offices are responsive to competitive issues and community needs in each market area. We fund our loan portfolio primarily with the core deposits from our clients, generally without utilizing brokered deposits and with minimal reliance on wholesale funding sources. For additional information about our underwriting standards and loan approval process, see “Business—Lending Activities,” included in Part I, Item 1 of this report. Recent Trends and Developments Current Expected Credit Losses On January 1, 2020, the Company adopted Accounting Standards Codification (“ASC”) 326, Measurement of Credit Losses on Financial Instruments (“ASC 326”), and replaced the historically used incurred loss methodology with an expected loss methodology that is referred to as the Current Expected Credit Loss (CECL) methodology. The measurement of expected credit losses under the CECL methodology is applicable to financial assets measured at amortized cost, including loans held for investment and held-to-maturity debt securities. It also applies to off-balance sheet credit exposures not accounted for as insurance (for example, loan commitments, standby letters of credit, financial guarantees, and other similar instruments) and net investments in leases recognized by a lessor in accordance with Topic 842 on leases. In addition, ASC 326 made changes to the accounting for available-for-sale debt securities. One such change is to require credit losses to be presented as an allowance rather than as a write-down on available-for-sale debt securities that management does not intend to sell or believes that it is more likely than not they will be required to sell. 33 The following table summarizes the estimated allowance for credit losses related to financial assets and off-balance sheet credit exposures and the corresponding impacts on the deferred tax liability and retained earnings upon adoption of ASC 326 on January 1, 2020: Assets: Allowance for credit losses on HTM securities Allowance for credit losses on loans held for investment $ Liabilities: Off-balance sheet credit exposures Deferred tax liability Equity: Retained earnings Pre-ASC 326 Adoption Post-ASC 326 Adoption Impact of ASC 326 Adoption — $ 73.0 — 26.7 — $ 103.0 2.3 18.5 — 30.0 2.3 (8.2) 953.6 929.5 (24.1) For additional information regarding the CECL adoption, see “Notes to Consolidated Financial Statements—Summary of Significant Accounting Policies” and “Notes to Consolidated Financial Statements—Recent Authoritative Accounting Guidance” included in Part IV, Item 15 of this report. COVID-19 Since its emergence in Wuhan, China in December 2019, COVID-19 has spread throughout the world, significantly impacting the entire world’s economies. In many cases, COVID-19 causes severe illness and in a significant minority of cases can result in death. The global impact of the pandemic has been rapidly evolving and many countries, including the United States, reacted by instituting a wide variety of control measures including states of emergency, mandatory quarantines, required business and school closures, implementing state-wide “shelter in place” orders, and restricting travel. The United States government has taken a number of actions to mitigate the impact of the COVID-19 pandemic on the U.S. economy. The Coronavirus Aid, Relief, and Economic Security Act, or CARES Act, signed into law in March 2020, provided one-time payments to individuals, additional health-care funding, loans, and grants to certain businesses, temporary amendments to the Internal Revenue Code, and strengthened unemployment insurance. In addition, the Federal Reserve cut the federal funds rate, lowered the interest rate on emergency lending at the discount window, and lengthened the term of overnight loans up to 90 days. The CARES Act was later extended by the Coronavirus Response and Relief Supplemental Appropriations Act, 2021, or RELIEF Act, which was signed into law on December 27, 2020. A number of key provisions of the RELIEF Act include additional loans and grants for small businesses, one-time payments to individuals, extensions to the increased unemployment insurance, additional health-care funding, and aid for rental assistance programs, amongst other short-term relief programs. The RELIEF Act also included funding for the vaccine rollout, transportation, education, and agricultural aid. The CARES Act (extended by the RELIEF Act) created a new guaranteed, unsecured loan program under the Small Business Administration called the Paycheck Protection Program, or the PPP, in which the Company participates. Designed to incentivize certain businesses to keep their workers on the payroll during the pandemic period, PPP loans are fully forgivable so long as the funds are used as prescribed by the program, are for a two-year or five-year term, earn interest at a rate of 1%, require no collateral or personal guarantees, and have deferred loan payments. The Company actively participated in assisting our clients with applications for resources through the program and approved approximately 11,700 applications for approximately $1.2 billion. The program ended on August 8, 2020 under the CARES Act and the RELIEF Act re-opened the program in January 2021 with $284 billion of additional funding available. The Company is actively participating in the extended program and assisting our customers with applications and as of February 19, 2021 has approved more than 3,150 applications, for approximately $296.3 million. The CARES Act permits financial institutions to suspend requirements under GAAP for loan modifications to borrowers affected by COVID-19 and is intended to provide guidance as to conditions that would constitute a short-term modification that would not meet the definition of a troubled debt restructuring. This includes the following: (i) the loan modification is made after March 1, 2020 through December 31, 2021, as extended under the RELIEF Act, (ii) the applicable loan was not more than 30 days past due as of December 31, 2019, and (iii) the modification is due to COVID-19. The Company is applying this guidance to qualifying loan modifications and, as of December 31, 2020, we had approximately 295 loans on deferrals totaling approximately $23.7 million, or 0.24% of loans held for investment. Additionally, as of December 31, 2020, the Company currently has forbearance requests granted on approximately 29 residential mortgage loans totaling $9.0 million. 34 On December 11, 2020, the U.S. Food and Drug Administration (the “FDA”) issued the first emergency use authorization for the Pfizer-BioNTech COVID-19 vaccine for the prevention of COVID-19 for individuals 16 years of age and older. On December 18, 2020, the FDA issued a second emergency use authorization for the Moderna COVID-19 vaccine. On February 4, 2021, Johnson & Johnson submitted an application for emergency use authorization for their single-shot vaccine with other companies expected to follow. Distribution of the vaccines has commenced, initially with front-line health-care workers receiving vaccinations to be followed by individuals deemed at high-risk of contracting COVID-19 or for severe illness from COVID-19. During the initial phases of the vaccine distribution, vaccine shortages and delays have been caused by high demand outstripping supply and challenging distribution logistics. With vaccine production ramping up and improvements to distribution logistics, experts estimate that the vaccines will be available to the general public by late spring/early summer of 2021. On February 3, 2021, the US House of Representatives approved an additional COVID-19 relief package but it has not yet been signed into law. The COVID-19 pandemic triggered a period of material global economic slowdown and recent trends suggest that, while the ongoing recovery is progressing, with the pace impacted by changing rates of positive diagnoses and additional measures by U.S. and local governments to manage developments. Management continues to actively work to minimize the current and future impact of this unprecedented situation, making adjustments to operations where appropriate or necessary to try and minimize the impact of COVID-19. As of January 31, 2021, a significant number of Company employees continue to work remotely and the Company has not yet established a timetable for the full work force to return to our facilities. This has not, however, caused a significant disruption to the Company operations. The extent to which COVID-19 impacts the Company’s financial results remains fluid and will continue to depend on a number of things, including the extent of the spread of the virus, the rate of infection, possible resurgence of the virus, the emergence of new strains of variants of the virus, the severity of illness and the degree of lethality, the relative effect on various portions of the population, the measures taken to combat the virus and their effectiveness, including the development and availability of vaccines and therapeutics and the prevalence of adoption barriers or resistance to them, the impact of control measures such as states of emergency, mandatory quarantines, and required business and school closures, the effect on international trade of any measures taken to combat the virus, including the reinstitution of travel restrictions, any action taken (such as the lowering of interest rates) by government entities to combat the negative macroeconomic effects of these measures, and other factors. Management continues to monitor the impact of COVID-19 on the Company’s financial results. The COVID-19 pandemic has affected modestly our operations and has had varying degrees of disruptions and restrictions to our borrowers and to our borrowers’ supply chains, closures of some facilities, and decreases in demand for certain products and services. The United States has signaled that the scope, duration, and severity of the pandemic is not yet fully known. As a result, there continues to be uncertainty as to the long-term effect on the economy and the Company. Acquisitions During the past few years, we have increased our community banking footprint across the Rocky Mountain and Pacific Northwest regions, in large part due to our acquisition activity. We continue to evaluate bank acquisitions and other strategic opportunities on an on-going basis. For additional information regarding our recent acquisitions, see “Risk Factors” included in Part I, Item 1A and “Notes to Consolidated Financial Statements — Acquisitions” included in Part IV, Item 15 of this report. Primary Factors Used in Evaluating Our Business As a banking institution, we manage and evaluate various aspects of both our financial condition and our results of operations. We monitor our financial condition and performance and evaluate the levels and trends of the line items included in our balance sheet and statements of income, as well as various financial ratios that are commonly used in our industry. We analyze these ratios and financial trends against both our own historical levels and the financial condition and performance of comparable banking institutions in our region and nationally. 35 Results of Operations Principal tools we use in managing and evaluating our results of operations include tracking performance as measured by certain metrics including return on average equity, return on average assets, efficiency ratio, non-interest expense as a percent of total average assets, earnings per share, total shareholder return, net interest income, non-interest income, non- interest expense, and net income. Net interest income is affected by a number of factors such as the level of interest rates, changes in interest rates, and changes in the volume and composition of interest earning assets and interest-bearing liabilities. Changes in interest rate spread, which is the difference between interest earned on assets and interest paid on liabilities, has the most significant impact on net interest income. Other factors like volume of loans, investment securities, and other interest earning assets, compared to the volume of interest-bearing deposits and indebtedness, also cause changes in our net interest income between periods. Non-interest bearing sources of funds, such as demand deposits and stockholders’ equity, help support earning assets. The impact of funding, including non-interest-bearing deposit sources, is captured in the net interest margin, which is calculated as net interest income divided by average earning assets. We evaluate our net interest income by assessing the yields on our loans and other earning assets, the costs of our deposits and other funding sources, and the levels of our net interest spread and net interest margin. We seek to increase our non-interest income over time, and we evaluate our non-interest income relative to the trends of the individual types of non-interest income in view of prevailing market conditions. We manage our non-interest expenses in consideration of growth opportunities and our community banking model that emphasizes client service and responsiveness. We evaluate our non-interest expense on factors that include our non-interest expense relative to our average assets, our efficiency ratio, and the trends of the individual categories of non-interest expense. Finally, we seek to increase our net income and provide favorable shareholder returns over time, and we evaluate our net income relative to the performance of similar bank holding companies on factors that include return on average assets, return on average equity, total shareholder return, and growth in earnings. Financial Condition We manage and evaluate our financial condition by focusing on liquidity, the diversification and quality of our loans, the adequacy of our allowance for credit losses, the diversification and terms of our deposits and other funding sources, the re-pricing characteristics and maturities of our assets and liabilities, including potential interest rate exposure, and the adequacy of our capital levels. We seek to maintain sufficient levels of cash and investment securities to meet potential payment and funding obligations, and we evaluate our liquidity on factors that include the levels of cash and highly liquid assets relative to our liabilities, the quality and maturities of our investment securities, the ratio of loans held for investment to deposits, and any reliance on brokered certificates of deposit or other wholesale funding sources. We seek to maintain a diverse and high-quality loan portfolio and evaluate our asset quality on factors that include the allocation of our loans among loan types, credit exposure to any single borrower or industry type, non-performing assets as a percentage of loans held for investment and OREO, and loan charge-offs as a percentage of average loans. We maintain our allowance for credit losses based on an estimate of expected credit losses in the loans held for investment portfolio over the life of the loan, including the incorporation of a one-year forecast period at each balance sheet date, and we evaluate the level of our allowance for credit losses relative to our overall loan portfolio and the level of non-performing loans and potential charge-offs. We seek to fund our assets primarily using core client deposits spread among various deposit categories, and we evaluate our deposit and funding mix on factors that include the allocation of our deposits among deposit types, the level of our non-interest-bearing deposits, the ratio of our core deposits (i.e. excluding time deposits above $100,000) to our total deposits, and our reliance on brokered deposits or other wholesale funding sources, such as borrowings from other banks or agencies. We seek to manage the mix, maturities, and re-pricing characteristics of our assets and liabilities to maintain relative stability of our net interest rate margin in a changing interest rate environment, and we evaluate our asset-liability management using models to evaluate the changes to our net interest income under different interest rate scenarios. Finally, we seek to maintain adequate capital levels to absorb unforeseen operating losses and to help support the growth of our balance sheet. We evaluate our capital adequacy using the regulatory and financial capital ratios including leverage capital ratio, tier 1 risk-based capital ratio, total risk-based capital ratio, tangible common equity to tangible assets, and tier 1 common capital to total risk-weighted assets. 36 Critical Accounting Estimates and Significant Accounting Policies Our consolidated financial statements are prepared in accordance with generally accepted accounting principles (“GAAP”) in the United States and follow general practices within the banking industry. Application of these principles requires management to make estimates, assumptions, and judgments that affect the amounts reported in the consolidated financial statements and accompanying notes. The most significant accounting policies we follow are summarized in “Notes to Consolidated Financial Statements—Summary of Significant Accounting Policies” included in Part IV, Item 15 of this report. Our critical accounting estimates are summarized below. Management considers an accounting estimate to be critical if: (1) the accounting estimate requires management to make particularly difficult, subjective, and/or complex judgments about matters that are inherently uncertain, and (2) changes in the estimate that are reasonably likely to occur from period to period, or the use of different estimates that management could have reasonably used in the current period, would have a material impact on our consolidated financial statements, results of operations, or liquidity. Allowance for Credit Losses The allowance for credit losses is a valuation account that creates an allowance for credit losses expected over the life of loans at each balance sheet date which is deducted from the loans’ amortized cost basis to present the net amount expected to be collected on the loans. Increases in the allowance are recorded through net income as a provision for credit loss expense. Decreases in the allowance are recorded through net income as a reversal of provision for credit loss expense. Loans are charged-off against the allowance when management believes the uncollectibility of a loan balance is confirmed. Expected recoveries recorded in the valuation account do not exceed the aggregate of loan amounts previously charged-off and loans expected to be charged-off. The allowance for credit losses represents management’s estimate of expected credit losses in the loans held for investment portfolio over the life of the loan, including the incorporation of a one-year forecast period for economic conditions. We perform a quarterly assessment of the risks inherent in our loan portfolio, as well as a detailed review of each significant loan we have assessed to have weaknesses that does not share common risk characteristics with other loans. Based on this analysis, we record a provision for credit losses in order to maintain the allowance for credit losses at appropriate levels. In determining the allowance for credit losses, management estimates the allowance balance using relevant available information, from internal and external sources, relating to past events, current conditions, and reasonable and supportable forecasts. Historical credit loss experience provides the basis for the estimation of expected credit losses. Adjustments to historical loss information are made for differences in current loan-specific risk characteristics such as differences in underwriting standards, portfolio mix, delinquency level, or term as well as for changes in environmental and economic conditions, such as changes in unemployment rates, property values, or other relevant factors. The allowance for credit losses is measured on a collective (pool) basis when similar risk characteristics exist. For loans acquired in a business combination with no significant evidence of credit deterioration since origination, the Company estimates an allowance for credit losses of the loans determined using the same methodology as other loans held for investment. The allowance for credit losses is maintained at an amount we believe to be sufficient to provide for estimated losses expected over the life of the loans at each balance sheet date resulting from management’s assessment of the quantitative and qualitative factors utilized to determine the allowance for credit losses. Management monitors qualitative and quantitative trends in the loan portfolio, including changes in the levels of past due, internally classified, and non- performing loans. Changes in the estimates and assumptions are possible and may have a material impact on our allowance, and as a result, on our consolidated financial statements or results of operations. As of January 1, 2020, the Company’s accounting policies changed significantly to comply with the adoption of ASC 326. Consistent with the transition guidance within ASC 326, prior years were not restated. Prior to January 1, 2020, general allowances and nonspecific allowances were based on incurred credit losses as described in our 2019 Form 10-K. See “Notes to Consolidated Financial Statements—Summary of Significant Accounting Policies” for a description of the methodology used to determine the allowance for credit losses and our policy pertaining to acquired loans. See “Notes to Consolidated Financial Statements—Loans” for a discussion on the factors driving changes in the amount of the allowance for credit losses. See also Part I, Item 1A, “Risk Factors—Credit Risks.” 37 Goodwill The excess purchase price over the fair value of net assets from acquisitions, or goodwill, is evaluated for impairment at least annually and on an interim basis if an event or circumstance indicates it is likely impairment has occurred. Goodwill impairment is determined by comparing the fair value of a reporting unit to its carrying amount. In any given year the Company may elect to perform a qualitative assessment to determine whether it is more likely than not that the fair value of a reporting unit is in excess of its carrying value. If it is not more likely than not that the fair value of the reporting unit is in excess of the carrying value, or if the Company elects to bypass the qualitative assessment, a quantitative impairment test is performed. In performing a quantitative test for impairment, the fair value of net assets is estimated based on analyses of the Company’s market value, discounted cash flows, and peer values. The determination of goodwill impairment is sensitive to market-based economics and other key assumptions used in determining or allocating fair value. Variability in the market and changes in assumptions or subjective measurements used to estimate fair value are reasonably possible and may have a material impact on our consolidated financial statements or results of operations. Our annual goodwill impairment test is performed each year as of July 1st. The Company performed its 2020 annual goodwill impairment qualitative assessment and determined the Company’s goodwill was not considered impaired. We monitor our performance and evaluate our goodwill for impairment annually or more frequently as needed. For additional information regarding goodwill, see “Notes to Consolidated Financial Statements—Summary of Significant Accounting Policies,” included in Part IV, Item 15 of this report and “Risk Factors—Operational Risks,” included in Part I, Item 1A of this report. Fair Values of Loans Acquired in Business Combinations Loans acquired in business combinations are initially recorded at fair value as adjusted for credit risk and an allowance for credit losses at the date of acquisition. For loans with no significant evidence of credit deterioration since origination, the difference between the fair value and the unpaid principal balance of the loan at the acquisition date is amortized into interest income using the effective interest method over the remaining period to contractual maturity. Loans acquired with evidence of deterioration in credit quality since origination, or PCD loans, are accounted for in accordance with ASC Topic 326-20 “Financial instruments - credit losses.” Determining the fair value of the loans involves estimating the amount and timing of principal and interest cash flows initially expected to be collected on the loans and discounting those cash flows at an appropriate market rate of interest. An allowance for credit losses is recognized by estimating the expected credit losses of the purchased asset and recording an adjustment to the acquisition date fair value to establish the initial amortized cost basis of the asset. Differences between the established fair value, or amortized cost basis, and the unpaid principal balance of the asset is considered to be a non-credit discount/premium and is accreted/ amortized into interest income using the interest method in accordance with ASC 310-10. Subsequent changes to the allowance for credit losses are recorded through provision for credit loss expense using the same methodology as other loans held for investment. For additional information regarding acquired loans, see “Notes to Consolidated Financial Statements—Summary of Significant Accounting Policies,” “Notes to Consolidated Financial Statements—Acquisitions,” and “Notes to Consolidated Financial Statements—Loans Held for Investment,” included in Part IV, Item 15 of this report. Results of Operations The following discussion and analysis is intended to provide detail about the results of operations by comparing the years ended December 31, 2020 to December 31, 2019 and the years ended December 31, 2019 to December 31, 2018. Performance Ratios As of or for the year ended December 31, Return on average assets Return on average common stockholders’ equity Efficiency ratio (1) Common stock dividend payout ratio (2) 2020 2019 2018 1.00 % 8.12 57.61 79.05 1.28 % 9.53 59.19 43.66 1.27 % 10.50 61.00 40.43 (1) Our efficiency ratio definition conforms with the FDIC definition for all periods presented as non-interest expense less amortization of intangible assets divided by net interest income plus non-interest income. (2) Common stock dividend payout ratio represents dividends per common share divided by basic earnings per common share. 38 Net Interest Income Net interest income, the largest source of our operating income, is derived from interest, dividends, and fees received on interest earning assets, less interest expense incurred on interest bearing liabilities. Interest earning assets primarily include loans and investment securities. Interest bearing liabilities include deposits and various forms of indebtedness. Net interest income is affected by the level of interest rates, changes in interest rates, and changes in the composition of interest earning assets and interest-bearing liabilities. Changes in interest rate spread, which is the difference between interest earned on assets and interest paid on liabilities, has the most significant impact on net interest income. Other factors like volume of loans, investment securities, and other interest earning assets compared to the volume of interest-bearing deposits and indebtedness also cause changes in our net interest income between periods. Non-interest-bearing sources of funds, such as demand deposits and stockholders’ equity, help to support earning assets. 39 The following table presents, for the periods indicated, condensed average balance sheet information using daily average balances, together with interest income and yields earned on average interest earning assets and interest expense and rates paid on average interest-bearing liabilities. Average Balance Sheets, Yields, and Rates (Dollars in millions) Interest earning assets: Loans (1) (2) Year Ended December 31, 2020 2019 2018 Average Balance Interest Average Rate Average Balance Interest Average Rate Average Balance Interest Average Rate $ 9,825.0 $ 454.7 4.63 % $ 8,879.1 $ 472.2 5.32 % $ 7,985.0 $ 405.9 5.08 % Investment securities (2) 3,303.0 66.8 Interest bearing deposits in banks 1,255.2 Federal funds sold 0.1 4.1 — 2.02 0.33 — 2,723.8 843.6 0.8 65.0 18.8 — 2.39 2.23 — 2,639.4 573.6 11.1 58.4 11.3 — 2.21 1.97 — Total interest earnings assets 14,383.3 525.6 3.65 12,447.3 556.0 4.47 11,209.1 475.6 4.24 1,726.0 $ 16,109.3 1,720.3 $ 14,167.6 1,405.6 $ 12,614.7 Non-earning assets Total assets Interest-bearing liabilities: Demand deposits Savings deposits Time deposits Repurchase agreements Other borrowed funds Long-term debt Subordinated debentures held by subsidiary trusts $ 3,631.1 $ 3,968.7 2.2 2.4 1,225.2 13.5 765.8 — 76.1 0.9 — 4.6 86.9 3.0 Total interest-bearing liabilities 9,753.8 26.6 Non-interest-bearing deposits 4,158.8 Other non-interest-bearing liabilities 211.5 Stockholders’ equity Total liabilities and stockholders’ equity 1,985.2 $ 16,109.3 0.06 % $ 3,033.5 $ 8.6 0.28 % $ 2,882.8 $ 8.1 0.28 % 0.06 1.10 0.12 — 6.04 3.45 0.27 3,463.4 1,478.9 677.3 — 15.2 18.4 22.3 3.9 — 1.3 86.9 4.5 8,755.2 59.0 0.53 1.51 0.58 — 8.55 5.18 0.67 3,166.7 1,199.5 642.8 12.5 12.0 2.7 0.39 1.00 0.42 1.7 0.2 11.76 17.6 1.3 7.39 84.1 4.1 7,995.2 40.9 4.88 0.51 3,327.5 185.9 1,899.0 $ 14,167.6 2,984.3 109.4 1,525.8 $ 12,614.7 Net FTE interest income Less FTE adjustments (2) Net interest income from consolidated statements of income Interest rate spread Net FTE interest margin (3) Cost of funds, including non-interest- bearing demand deposits (4) $ 499.0 (2.0) $ 497.0 (2.0) $ 434.7 (2.2) $ 497.0 $ 495.0 $ 432.5 3.38 % 3.47 0.19 3.80 % 3.99 0.49 3.73 % 3.88 0.37 (1) Average loan balances include mortgage loans held for sale and non-accrual loans. Interest income on loans includes amortization of deferred loan fees net of deferred loan costs of $32.5 million, $3.9 million, and $3.4 million during 2020, 2019, and 2018, respectively. Interest income and average rates for tax exempt loans and securities are presented on a fully taxable equivalent, or FTE, basis utilizing the 21% federal income tax rate. (2) (3) Net FTE interest margin during the period equals (i) the difference between interest income on interest earning assets and the interest expense on interest bearing liabilities, divided by (ii) average interest earning assets for the period. (4) Calculated by dividing total interest on interest-bearing liabilities by the sum of total interest-bearing liabilities plus non-interest- bearing deposits. 40 Net FTE interest income increased $2.0 million to $499.0 million during 2020, as compared to $497.0 million in 2019. The increase is primarily attributable to lower cost of funds on interest-bearing deposit balances, which was partially offset by interest on higher long-term debt balances, as a result of the subordinated debt offering in May 2020, and lower levels of interest earned on earning assets as a result of lower interest rates. Also contributing to net FTE interest income during 2020, as compared to 2019, was interest accretion related to the fair value of acquired loans of $13.1 million during 2020 as compared to $18.4 million in 2019, of which $5.2 million was the result of early loan payoffs during 2020, as compared to $8.0 million in 2019. Net FTE interest income was also impacted by recoveries of previously charged-off interest of $0.4 million in 2020, as compared to $3.1 million in 2019. The Company’s net interest margin ratio decreased 52 basis points to 3.47% during 2020, as compared to 3.99% in 2019. Exclusive of interest accretion related to acquired loans and the impact of recoveries of charged-off interest, our 2020 net interest margin ratio decreased 44 basis points over our similarly calculated net interest margin ratio in 2019. Net FTE interest income increased $62.3 million to $497.0 million during 2019, as compared to $434.7 million in 2018, primarily due to higher outstanding loan balances as a result of the full year impact of the Inland Northwest Bank (“INB”) acquisition, the Idaho Independent Bank (“IIBK”) and Community 1st Bank (“CMYF”) acquisitions, and organic loan growth, combined with increases in yields earned on interest earning assets, which were partially offset by a higher cost of funds. Also contributing to the increase in net FTE interest income during 2019, as compared to 2018, was interest accretion related to the fair value of acquired loans of $18.4 million during 2019 as compared to $13.7 million in 2018, of which $8.0 million was the result of early loan payoffs during 2019 as compared to $5.9 million in 2018. Net FTE interest income was also positively impacted by recoveries of previously charged-off interest of $3.1 million in 2019, as compared to $4.0 million in 2018. The Company’s net interest margin ratio increased 11 basis points to 3.99% during 2019, as compared to 3.88% in 2018. Exclusive of interest accretion related to acquired loans and the impact of recoveries of charged-off interest, our 2019 net interest margin ratio increased 10 basis points over our similarly calculated net interest margin ratio in 2018. The table below sets forth, for the periods indicated, a summary of the changes in interest income and interest expense resulting from estimated changes in average asset and liability balances (volume) and estimated changes in average interest rates (rate). Changes which are not due solely to volume or rate have been allocated to these categories based on the respective percent changes in average volume and average rate as they compare to each other. Analysis of Interest Changes Due To Volume and Rates Year Ended December 31, 2020 compared with December 31, 2019 Rate Volume Net Year Ended December 31, 2019 compared with December 31, 2018 Rate Volume Net Year Ended December 31, 2018 compared with December 31, 2017 Rate Volume Net (Dollars in millions) Interest earning assets: Loans (1) Investment Securities (1) Interest bearing deposits in banks Total change Interest bearing liabilities: Demand deposits Savings deposits Time deposits Repurchase agreements Other borrowed funds Long-term debt Subordinated debentures held by subsidiary trusts Total change Increase in FTE net interest income (1) $ 50.3 $ 13.8 (67.8) $ (12.0) (17.5) $ 1.8 45.4 $ 1.9 20.9 $ 4.7 66.3 $ 6.6 64.2 $ 4.4 14.3 $ 6.4 9.2 (23.9) (14.7) 5.3 2.2 73.3 (103.7) (30.4) 52.6 27.8 1.7 2.7 (3.8) 0.5 — 5.2 — 6.3 (8.1) (18.7) (5.0) (3.5) — (1.9) (6.4) (16.0) (8.8) (3.0) — 3.3 (1.5) (1.5) (38.7) (32.4) 0.4 1.2 2.8 0.1 (0.2) (0.2) 0.1 4.2 0.1 4.7 7.5 1.1 — 0.2 0.3 13.9 7.5 80.4 0.5 5.9 10.3 1.2 (0.2) — 0.4 18.1 (0.7) 67.9 4.9 25.6 1.9 3.6 3.2 1.3 0.1 — 0.7 1.2 0.6 0.1 (1.4) 0.7 0.1 2.0 0.9 11.0 1.0 13.0 $ 67.0 $ (65.0) $ 2.0 $ 48.4 $ 13.9 $ 62.3 $ 65.9 $ 14.6 $ 80.5 78.5 10.8 4.2 93.5 2.6 4.8 3.8 1.4 (1.3) 0.7 (1) Interest income and average rates for tax exempt loans and securities are presented on a FTE basis. 41 Provision for Credit Losses Effective January 1, 2020, the Company adopted ASC 326, Measurement of Credit Losses on Financial Instruments, which replaced the historically used incurred loss methodology with an expected loss methodology and is referred to as the current expected credit loss (CECL) accounting standard. Upon adoption, the Company recorded an increase in the allowance for credit losses on loans of $30.0 million and an increase in the allowance for credit losses on off-balance sheet credit exposures of $2.3 million that was offset in shareholders’ equity and deferred taxes. Fluctuations in the provision for credit losses reflect management’s estimate of possible credit losses based upon the composition of our loan portfolio, evaluation of the borrowers’ ability to repay, collateral value underlying loans, loan loss trends, and estimated effects of current and forecasted economic conditions on our loans held for investment portfolio. During 2020, we recorded a provision for credit losses of $56.9 million, as compared to $13.9 million in 2019, with the difference largely attributable to the adoption of CECL and which reflects an increase in expected losses over the life of the loans held for investment portfolios associated with significant changes in the Company’s internal economic forecast as a result of COVID-19, including uncertainty regarding the benefits of government stimulus programs. The provision for credit losses is reflective of net charge-offs of $14.2 million, or 0.14% of average loans outstanding, for 2020, compared to $13.9 million, or 0.16% of average loans outstanding in 2019. For information regarding our non-performing loans, see “Non-Performing Assets” included herein. For information regarding our allowance for credit losses, see “Financial Condition—Allowance for Credit Losses” included herein. Non-interest Income Our principal sources of non-interest income primarily include fee-based revenues such as payment services, mortgage banking and wealth management revenues, service charges on deposit accounts, and other service charges, commissions, and fees. The following table presents the composition of our non-interest income as of the dates indicated: Non-interest Income (Dollars in millions) Payment services revenues Mortgage banking revenues* Wealth management revenues Service charges on deposit accounts Other service charges, commissions, and fees* Investment securities gains (losses), net Other income Year Ended December 31, % Change 2020 2019 2018 2020 vs 2019 2019 vs 2018 $ 41.1 $ 41.5 $ 43.3 (1.0) % (4.2) % 47.3 23.8 17.6 12.1 0.3 14.5 33.2 23.8 21.1 7.0 0.1 15.9 29.7 23.2 21.8 5.8 (0.1) 15.1 42.5 — (16.6) 72.9 200.0 (8.8) 11.8 2.6 (3.2) 20.7 (200.0) 5.3 Total non-interest income* 2.7 * Certain reclassifications, none of which were material, have been made to conform 2019 and 2018 amounts to the 2020 presentation. $ 138.8 $ 156.7 $ 142.6 9.9 Non-interest income increased $14.1 million, or 9.9%, to $156.7 million in 2020, as compared to $142.6 million in 2019, and increased $3.8 million, or 2.7%, to $142.6 million in 2019 as compared to $138.8 million in 2018. Significant components of these fluctuations are discussed below. Mortgage banking revenues include origination and processing fees on residential real estate loans held for sale and gains on residential real estate loans sold to third parties. Fluctuations in market interest rates have a significant impact on mortgage banking revenues. Higher interest rates can reduce the demand for home loans and loans to refinance existing mortgages. Conversely, lower interest rates generally stimulate refinancing and home loan origination. Mortgage banking revenues increased $14.1 million, or 42.5%, to $47.3 million in 2020, as compared to $33.2 million in 2019. The increase was primarily driven by increased mortgage loan production due to higher levels of refinance activity as a result of the favorable interest rate environment. The increase was partially offset by mortgage servicing impairments related to projected increases in mortgage prepayment rates due to the favorable interest rate environment of $9.9 million in 2020 and $0.4 million in 2019. Loans originated for home purchases accounted for approximately 42.7% of 2020 loan production, as compared to approximately 68.2% in 2019. Mortgage banking revenues increased $3.5 million, or 11.8%, to $33.2 million in 2019, as compared to $29.7 million in 2018. The increase is primarily attributable to increased demand in the refinance market as a result of lower interest rates. Loans originated for home purchases accounted for approximately 68.2% of 2019 loan production, as compared to approximately 79.3% in 2018. 42 Service charge fees are primarily driven by service and overdraft charges on deposit accounts. These service charges decreased $3.5 million, or 16.6%, to $17.6 million in 2020, as compared to $21.1 million in 2019 and decreased $0.7 million, or 3.2%, in 2019, as compared to $21.8 million in 2018. The decrease in 2020 is primarily due to changes in client behavior in addition to the Company waiving continuous overdraft fees and regular overdraft fees for clients receiving U.S. government stimulus checks during the second quarter of 2020. Other service charges, commissions, and fees primarily include fees earned on certain derivative interest rate contracts, insurance commissions, and safe deposit boxes. Other service charges, commissions, and fees increased $5.1 million, or 72.9%, to $12.1 million in 2020, as compared $7.0 million in 2019 and increased $1.2 million, or 20.7%, in 2019, as compared to $5.8 million in 2018. These increases were primarily due to additional fees earned on derivative interest rate swap contracts offered to clients. Non-interest Expense The following table presents the composition of our non-interest expense as of the dates indicated: Non-interest Expense (Dollars in millions) Salaries and wages Employee benefits Outsourced technology services Occupancy, net Furniture and equipment OREO expense, net of income Professional fees FDIC insurance premiums Core deposit intangibles amortization Other expenses* Acquisition related expenses Total non-interest expense* Year Ended December 31, % Change 2020 2019 2018 2020 vs 2019 2019 vs 2018 $ 173.7 $ 155.3 $ 146.4 11.8 % 6.1 % 49.4 32.8 28.5 15.5 51.5 32.3 28.3 13.2 (0.5) (2.2) 10.9 5.9 10.9 60.4 — 11.6 3.5 11.2 63.6 20.3 47.9 28.7 25.4 12.7 0.3 10.5 5.6 7.9 58.6 12.4 (4.1) 1.5 0.7 17.4 (77.3) (6.0) 68.6 (2.7) (5.0) (100.0) $ 387.5 $ 388.6 $ 356.4 (0.3) 7.5 12.5 11.4 3.9 NM 10.5 (37.5) 41.8 8.5 63.7 9.0 * Certain reclassifications, none of which were material, have been made to conform 2019 and 2018 amounts to the 2020 presentation. Non-interest expense decreased $1.1 million, or 0.3%, to $387.5 million in 2020, as compared to $388.6 million in 2019, and increased $32.2 million, or 9.0%, to $388.6 million in 2019, as compared to $356.4 million in 2018. Significant components of these increases are discussed in more detail below. Salaries and wages expense increased $18.4 million, or 11.8%, to $173.7 million in 2020, as compared to $155.3 million in 2019. The increase was primarily due to normal merit wage increases, higher mortgage loan originator commissions, higher levels of incentive accruals, and increased personnel costs associated with the full-year impact of the IIBK and CMYF acquisitions in April 2019. Salaries and wages expense increased $8.9 million, or 6.1%, to $155.3 million in 2019, as compared to $146.4 million in 2018. The increase was primarily due to normal merit increases and increased personnel costs associated with the IIBK and CMYF acquisitions in April 2019 and the full-year impact of the INB acquisition in August 2018. Employee benefits expense decreased $2.1 million, or 4.1%, to $49.4 million in 2020, as compared to $51.5 million in 2019. The decrease in employee benefits expense was primarily due to decreased health care costs, partially offset by the full-year impact of the IIBK and CMYF acquisitions in April 2019. Employee benefits expense increased $3.6 million, or 7.5%, to $51.5 million in 2019, as compared to $47.9 million in 2018. The increase in employee benefits expense in 2019, as compared to 2018, was primarily due to additional benefit costs resulting from the IIBK and CMYF acquisitions in April 2019 and the full-year impact of the INB acquisition in August 2018. 43 Outsourced technology services expense increased $0.5 million, or 1.5%, to $32.8 million in 2020, as compared to $32.3 million in 2019, and increased $3.6 million, or 12.5%, in 2019, as compared to $28.7 million in 2018. The 2019 increase was primarily due to expenses resulting from the IIBK and CMYF acquisitions in April 2019 and the full-year impact of the INB acquisition in August 2018. Occupancy, net expense increased $0.2 million, or 0.7%, to $28.5 million in 2020, as compared to $28.3 million in 2019 and increased $2.9 million, or 11.4%, in 2019, as compared to $25.4 million in 2018. The 2019 increase was primarily due to expenses resulting from the IIBK and CMYF acquisitions in April 2019. Core deposit intangibles represent the intangible value of depositor relationships resulting from deposit liabilities assumed, as a result of acquisitions, and are amortized based on the estimated useful lives of the related deposits. Core deposit intangibles amortization expense decreased $0.3 million, or 2.7%, to $10.9 million in 2020, as compared to $11.2 million in 2019, and increased $3.3 million or 41.8%, to $11.2 million in 2019, as compared to $7.9 million in 2018, due to additional amortization of core deposit intangibles recorded in conjunction with recent acquisitions. We acquired core deposit intangibles of $16.6 million in conjunction with our acquisitions of IIBK and CMYF in April 2019 and $15.7 million in conjunction with our acquisition of INB in August 2018. For additional information regarding acquired core deposit intangibles, see “Notes to Consolidated Financial Statements—Acquisitions,” included in Part IV, Item 15 of this report. Other expenses primarily include advertising and public relations costs; office supply, postage, freight, telephone, and travel expenses; donations expense; debit and credit card expenses; board of director fees; legal expenses; and, other losses. Other expenses decreased $3.2 million, or 5.0%, to $60.4 million in 2020, as compared to $63.6 million in 2019. The decrease in other expenses were primarily the result of lower travel expenses as a result of COVID-19 travel restrictions. Other expenses increased $5.0 million, or 8.5%, to $63.6 million in 2019, as compared to $58.6 million in 2018. The increase in other expenses were due to the additional operating expenses resulting from the IIBK and CMYF acquisitions in April 2019 and the INB acquisition in August 2018. We recorded no acquisition related expenses during 2020, compared to $20.3 million and $12.4 million during 2019 and 2018, respectively. Acquisition related expenses primarily include legal and professional fees; technology, conversion, and contract termination costs; employee retention payments; and travel expenses. For additional information regarding our acquisitions, see “Recent Trends and Developments” included herein and “Notes to Consolidated Financial Statements— Acquisitions,” included in Part IV, Item 15 of this report. Income Tax Expense Our effective federal tax rate was 17.5% for the year ended December 31, 2020, 18.8% for the year ended December 31, 2019, and 17.1% for the year ended December 31, 2018. Fluctuations in effective federal income tax rates are primarily due to the timing of federal tax credits resulting from our participation in the New Markets Tax Credits Program, a program through the U.S. Department of Treasury aimed at attracting private capital into low-income communities. For additional information about our participation in the New Markets Tax Credits Program, see “Notes to Consolidated Financial Statements—Summary of Significant Accounting Policies,” included in Part IV, Item 15 of this report. State income tax applies primarily to pretax earnings generated within Idaho, Montana, Oregon, and South Dakota. Our effective state tax rate was 5.4% for the year ended December 31, 2020, 4.2% for the year ended December 31, 2019, and 5.2% for the year ended December 31, 2018. Net Income Net income decreased $19.8 million, or 10.9%, to $161.2 million, or $2.53 per diluted share, in 2020, compared to $181.0 million, or $2.83 per diluted share, in 2019 and increased $20.8 million, or 13.0%, to $181.0 million, or $2.83 per diluted share, in 2019, as compared to $160.2 million, or $2.75 per diluted share, in 2018. There were no acquisition related expenses in 2020. The after-tax impact of acquisition related expenses on earnings per share was $0.24 and $0.17 in 2019 and 2018, respectively. 44 Summary of Quarterly Results The following tables present the Company’s summarized quarterly financial information for the fiscal years ended December 31, 2020 and 2019. Quarterly Results (Unaudited) (Dollars in millions except per share data) Year Ended December 31, 2020 (1) Interest income Interest expense Net interest income Provision for loan losses Net interest income after provision for loan losses Non-interest income* Non-interest expense* Income before income taxes Income tax expense Net income Basic earnings per common share Diluted earnings per common share Dividends paid per common share Special dividends per common share Year Ended December 31, 2019 (1) Interest income Interest expense Net interest income Provision for loan losses Net interest income after provision for loan losses Non-interest income* Non-interest expense* Income before income taxes Income tax expense Net income First Quarter Second Quarter Third Quarter Fourth Quarter $ 132.2 $ 128.8 $ 128.9 $ 133.6 9.1 123.1 29.0 94.1 38.4 95.0 37.5 8.2 29.3 $ 0.45 $ 0.45 0.34 0.60 6.3 122.5 19.5 103.0 39.7 95.6 47.1 10.4 36.7 $ 0.57 $ 0.57 0.34 — 5.9 5.2 123.0 128.4 5.2 3.2 117.8 125.2 44.7 99.5 63.0 14.7 48.3 $ 0.76 $ 0.76 0.34 — 33.9 97.4 61.7 14.8 46.9 0.76 0.76 0.38 — $ $ $ 130.6 $ 142.1 $ 141.3 $ 140.0 14.6 116.0 3.7 112.3 31.7 91.0 53.0 16.8 125.3 3.8 121.5 37.6 110.3 48.8 11.4 41.6 $ 10.9 37.9 $ $ 15.8 125.5 2.6 11.8 128.2 3.8 122.9 124.4 38.2 96.7 64.4 15.3 49.1 $ 35.1 90.6 68.9 16.5 52.4 Basic earnings per common share Diluted earnings per common share Dividends paid per common share (1) Quarterly amounts may not add to annual amounts due to the effect of rounding on a quarterly basis. * Certain reclassifications, none of which were material, have been made to conform certain quarter amounts to the fourth quarter 2020 presentation. 0.69 $ 0.69 0.31 0.59 $ 0.59 0.31 0.76 $ 0.76 0.31 $ 0.81 0.80 0.31 Financial Condition Total assets increased $3,004.5 million, or 20.5%, to $17,648.7 million as of December 31, 2020, from $14,644.2 million as of December 31, 2019, primarily as a result of higher deposits and the impact of PPP loans, which resulted in an increase in cash and cash equivalents of $1,200.0 million, an increase to our investment securities portfolio of $1,008.0 million, and an increase in loans held for investment of $876.8 million. Total assets increased $1,344.0 million, or 10.1%, to $14,644.2 million as of December 31, 2019, from $13,300.2 million as of December 31, 2018, with $862.3 million of the increase attributable to the IIBK and CMYF acquisitions. The remaining increase was primarily due to the deployment of funds generated through organic deposit growth into interest earning assets. 45 Loans Held for Sale Loans held for sale consist of residential mortgage loans pending sale to investors in the secondary market. Loans held for sale decreased $26.9 million, or 26.7%, to $74.0 million as of December 31, 2020, compared to $100.9 million as of December 31, 2019. The decrease was primarily due to the decision to hold additional mortgage loans originated as loans held for investment on our balance sheet. Loans held for sale increased $67.6 million, or 203.0%, to $100.9 million as of December 31, 2019, compared to $33.3 million as of December 31, 2018. The increase was primarily due to an increase in originations of mortgage loans held for sale as a result of higher levels of refinance activity driven by lower interest rates. Loans Held for Investment, Net of Deferred Fees and Costs The following table presents the composition of our loan portfolio as of the dates indicated: Loans Outstanding (Dollars in millions) Real estate: Commercial* Construction Residential* Agricultural Consumer Commercial* Agricultural Other 2020 Percent 2019 Percent As of December 31, Percent 2018 2017 Percent 2016 Percent $ 3,743.2 38.1 % $ 3,487.8 39.2 % $ 3,247.5 38.3 % $ 2,809.9 37.1 % $ 1,714.1 31.6 % 1,039.4 10.6 977.7 10.8 838.7 9.9 708.3 9.3 1,396.3 14.2 1,246.1 14.0 1,284.3 15.2 1,261.7 16.7 220.6 2.2 226.6 2.5 217.4 2.6 158.2 2.1 1,025.9 10.4 1,045.2 11.7 1,070.2 12.6 1,034.4 13.7 482.0 8.9 910.3 16.8 170.2 3.1 970.3 17.9 2,153.9 22.0 1,673.7 18.7 1,560.3 18.4 1,456.6 19.2 1,038.1 19.2 247.6 1.6 2.5 — 279.1 — 3.1 — 254.8 1.6 3.0 — 136.2 4.9 1.8 0.1 132.9 1.6 2.5 — Loans held for investment 9,828.5 100.0 % 8,936.2 100.0 % 8,474.8 100.0 % 7,570.2 100.0 % 5,419.5 100.0 % Deferred loan and fees and costs Loans held for investment, net of deferred fees and costs Less allowance for credit losses** Loans held for investment, net of allowance Allowance to loans held for investment (21.0) (5.5) (4.4) (2.5) (2.8) 9,807.5 8,930.7 8,470.4 7,567.7 5,416.7 144.3 73.0 73.0 72.1 76.2 $ 9,663.2 $ 8,857.7 $ 8,397.4 $ 7,495.6 $ 5,340.5 1.47 % 0.82 % 0.86 % 0.95 % 1.41 % *In conjunction with the adoption of ASU 2016-13, the Company reclassified 2019 and prior amounts in our multi-family loan portfolio from residential real estate to commercial real estate. Additionally, the Company reclassified 2019 and prior amounts in our commercial 1-4 family and commercial home equity lines of credit from commercial real estate to commercial to conform 2019 and prior amounts to the 2020 presentation. These reclassifications did not change previously reported loans held for investment. **Allowance for credit losses on loans (ACLL) for the 2020 period; Allowance for loan losses (ALLL) for the 2019 and prior periods. Loans held for investment, net of deferred fees and costs, increased $876.8 million, or 9.8%, to $9,807.5 million as of December 31, 2020, from $8,930.7 million as of December 31, 2019. Approximately $739.8 million of the increase was attributable to PPP loans. Significant contributing portfolios are discussed in greater detail below. Loans held for investment, net of deferred fees and costs, increased $460.3 million, or 5.4%, to $8,930.7 million as of December 31, 2019, as compared to $8,470.4 million as of December 31, 2018. Approximately $416.6 million of this increase was attributable to the acquisitions of IIBK and CMYF in April 2019. Exclusive of the IIBK and CMYF acquisitions, loans held for investment grew organically $43.6 million, or 0.5%, with the growth occurring in commercial real estate, construction, agricultural real estate, agricultural, and loans held for sale. These increases were partially offset by declines in residential real estate, consumer, and commercial loans. Real Estate Loans. We provide interim construction and permanent financing for both single-family and multi-unit properties, medium-term loans for commercial, agricultural and industrial property and/or buildings and equity lines of credit secured by real estate. 46 Commercial real estate loans. Commercial real estate loans include loans for property and improvements used commercially by the borrower or for lease to others for the production of goods or services. Approximately 45.5% and 44.7% of our commercial real estate loans were owner occupied as of December 31, 2020 and 2019, respectively. Commercial real estate loans increased $255.4 million, or 7.3%, to $3,743.2 million as of December 31, 2020, from $3,487.8 million as of December 31, 2019. Growth primarily occurred in Idaho, Oregon, and Washington. Commercial real estate loans increased $240.3 million, or 7.4%, to $3,487.8 million as of December 31, 2019, from $3,247.5 million as of December 31, 2018. Exclusive of $151.5 million of IIBK and CMYF acquired loans, commercial real estate loans increased organically $88.8 million, or 2.7%. Organic growth primarily occurred in Idaho and Oregon. Construction loans. Construction loans are primarily to commercial builders for residential lot development and the construction of single-family residences and commercial real estate properties. Construction loans are generally underwritten pursuant to pre-approved permanent financing. As of December 31, 2020, our construction loan portfolio was divided among the following categories: approximately $250.9 million, or 24.1%, residential construction; approximately $523.5 million, or 50.4%, commercial construction; and approximately $265.0 million, or 25.5%, land acquisition and development. This compares to approximately $244.1 million, or 25.0%, residential construction; approximately $431.5 million, or 44.1%, commercial construction; and approximately $302.1 million, or 31.0%, land acquisition and development as of December 31, 2019. Construction loans increased $61.7 million, or 6.3%, to $1,039.4 million as of December 31, 2020, from $977.7 million as of December 31, 2019. Construction loans increased due to increases in commercial and residential construction loans, which were partially offset by a decrease in land acquisition and development loans. Construction loans increased $139.0 million, or 16.6%, to $977.7 million as of December 31, 2019, from $838.7 million as of December 31, 2018. Exclusive of $100.5 million of IIBK and CMYF acquired loans, construction loans increased organically $38.5 million, or 4.6%, due to increases in commercial construction loans, which were partially offset by decreases in land acquisition and development and residential construction loans. Residential real estate loans. Retained residential real estate loans are typically secured by first liens on the financed property and generally mature in less than 15 years. Included in residential real estate loans were home equity loans and lines of credit of $384.0 million and $423.5 million as of December 31, 2020 and December 31, 2019, respectively. Residential real estate loans increased $150.2 million, or 12.1%, to $1,396.3 million as of December 31, 2020, from $1,246.1 million as of December 31, 2019 as a result of our decision to hold a portion of our mortgage loans originated on our balance sheet. Residential real estate loans decreased $38.2 million, or 3.0%, to $1,246.1 million as of December 31, 2019, from $1,284.3 million as of December 31, 2018. Exclusive of $76.0 million of IIBK and CMYF acquired loans, residential real estate loans decreased $114.2 million, or 8.9%. During 2020 and 2019, we sold most of our residential real estate loan production to secondary investors. Consumer Loans. Our consumer loans include direct personal loans; credit card loans and lines of credit; and indirect loans created when we purchase consumer loan contracts advanced for the purchase of automobiles, boats, and other consumer goods from the consumer product dealer network within the market areas we serve. Personal loans and indirect dealer loans are generally secured by automobiles, recreational vehicles, boats, and other types of personal property and are made on an installment basis. Credit cards are offered to clients in our market areas. Lines of credit are generally floating rate loans that are unsecured or secured by personal property. Approximately 78.5% and 75.1% of our consumer loans as of December 31, 2020 and 2019, respectively, were indirect consumer loans. Consumer loans decreased $19.3 million, or 1.8%, to $1,025.9 million as of December 31, 2020, from $1,045.2 million as of December 31, 2019. Within the consumer loan portfolio direct consumer loans decreased $28.4 million, or 15.9%, and credit card loans decreased $11.4 million, or 14.0%, partially offset by an increase in indirect consumer loans of $20.5 million, or 2.6%. Consumer loans decreased $25.0 million, or 2.3%, to $1,045.2 million as of December 31, 2019, from $1,070.2 million as of December 31, 2018. Exclusive of $14.6 million of IIBK and CMYF acquired loans, consumer loans decreased organically $39.6 million, or 3.7%, across all consumer loan categories. 47 Commercial Loans. We provide a mix of variable and fixed rate commercial loans. The loans are typically made to small and medium-sized manufacturing, wholesale, retail, and service businesses for working capital needs and business expansions. Commercial loans generally include lines of credit, business credit cards, and loans with maturities of five years or less and outstanding balances tend to be cyclical in nature. The loans are generally made with business operations as the primary source of repayment and are typically collateralized by inventory, accounts receivable, equipment, and/or personal guarantees. Commercial loans increased $480.2 million, or 28.7%, to $2,153.9 million as of December 31, 2020, from $1,673.7 million as of December 31, 2019. Exclusive of $739.8 million of PPP loans, commercial loans decreased $259.5 million, primarily due to paydowns within the portfolio. Commercial loans increased $113.4 million, or 7.3%, to $1,673.7 million as of December 31, 2019, from $1,560.3 million as of December 31, 2018. Exclusive of $61.4 million of IIBK and CMYF acquired loans, commercial loans increased $52.0 million. Agricultural Loans. Our agricultural loans generally consist of short- and medium-term loans and lines of credit that are primarily used for crops, livestock, equipment, and general operations. Agricultural loans are ordinarily secured by assets such as livestock or equipment and are repaid from the operations of the farm or ranch. Agricultural loans generally have maturities of five years or less, with operating lines for one production season. Agricultural loans decreased $31.5 million, or 11.3%, to $247.6 million as of December 31, 2020, from $279.1 million as of December 31, 2019. The decrease occurred primarily in Montana. Agricultural loans increased $24.3 million, or 9.5%, to $279.1 million as of December 31, 2019, from $254.8 million as of December 31, 2018. Exclusive of $12.6 million of IIBK and CMYF acquired loans, agricultural loans increased organically $11.7 million, or 4.6%. The increase is primarily attributable to Oregon. The following table presents the maturity distribution of our loan portfolio and the sensitivity of the loans to changes in interest rates as of December 31, 2020: Maturities and Interest Rate Sensitivities (Dollars in millions) Real estate Consumer Commercial Agricultural Other Loans held for investment Loans at fixed interest rates Loans at variable interest rates Non-accrual loans Loans held for investment Within One Year One Year to Five Years Five Years to Fifteen Years After Fifteen Years Total $ 1,622.4 $ 3,427.9 $ 1,053.0 $ 296.2 $ 6,399.5 280.8 1,366.4 197.9 — 632.2 677.0 46.3 — 109.9 78.7 0.4 — 3.0 31.8 3.0 1.6 1,025.9 2,153.9 247.6 1.6 $ $ 3,467.5 $ 4,783.4 $ 1,242.0 $ 335.6 $ 9,828.5 2,214.8 $ 2,782.3 $ 434.8 $ 27.6 $ 5,459.5 1,252.7 2,001.1 807.2 268.5 4,329.5 — — — 39.5 39.5 $ 3,467.5 $ 4,783.4 $ 1,242.0 $ 335.6 $ 9,828.5 48 Non-Performing Assets Non-performing assets include non-accrual loans, loans contractually past due by 90 days or more and still accruing interest, and OREO. The following table sets forth information regarding non-performing assets as of the dates indicated: Non-Performing Assets and Troubled Debt Restructurings (Dollars in millions) As of December 31, Non-performing loans: Non-accrual loans Accruing loans past due 90 days or more Total non-performing loans OREO Total non-performing assets Troubled debt restructurings not included above (1) Non-accrual loans to loans held for investment Non-performing assets to loans held for investment and OREO (2) Non-performing assets to total assets (3) 2020 2019 2018 2017 2016 $ 39.5 $ 42.9 $ 54.3 $ 69.4 $ 72.8 8.5 48.0 2.5 50.5 3.2 $ $ 5.7 48.6 8.5 57.1 5.5 $ $ 3.8 58.1 14.4 72.5 5.6 $ $ 3.1 72.5 10.1 82.6 12.6 $ $ 3.8 76.6 10.0 86.6 22.3 $ $ 0.40 % 0.48 % 0.64 % 0.92 % 1.34 % 0.51 0.29 0.64 0.39 0.86 0.55 1.09 0.68 99.40 1.60 0.96 99.52 Allowance for credit losses to non-performing loans (4) 300.63 150.21 125.65 (2) (1) Accruing loans modified in troubled debt restructurings are not considered non-performing loans. While still considered impaired under applicable accounting guidance, these loans are performing as agreed under their modified terms and management expects performance to continue. Including accruing troubled debt restructurings described in footnote 1, the ratio of non-performing assets to loans held for investment and OREO would be 0.55%, 0.70%, 0.92%, 1.26% and 2.01% as of December 31, 2020, 2019, 2018, 2017, and 2016, respectively. Including accruing troubled debt restructurings described in footnote 1, the ratio of non-performing assets to total assets would be 0.30%, 0.43%, 0.59%, 0.78% and 1.20% as of December 31, 2020, 2019, 2018, 2017, and 2016, respectively. Including accruing troubled debt restructurings described in footnote 1, the ratio of allowance for credit losses to non-performing loans would be 281.84%, 134.91%, 114.55%, 84.72% and 77.04% as of December 31, 2020, 2019, 2018, 2017, and 2016, respectively. (4) (3) Non-performing loans. Non-performing loans include non-accrual loans and loans contractually past due 90 days or more and still accruing interest. Total non-performing loans decreased $0.6 million, or 1.2%, to $48.0 million as of December 31, 2020, from $48.6 million as of December 31, 2019. Non-accrual loans, the largest component of non-performing loans, decreased $3.4 million, or 7.9%, to $39.5 million as of December 31, 2020, from $42.9 million as of December 31, 2019. Total non-performing loans decreased $9.5 million, or 16.4%, to $48.6 million as of December 31, 2019, from $58.1 million as of December 31, 2018. Non-accrual loans, the largest component of non-performing loans, decreased $11.4 million, or 21.0%, to $42.9 million as of December 31, 2019, from $54.3 million as of December 31, 2018. This decrease was primarily due to the movement of non-performing loans out of the portfolio through pay-downs, charge-offs, and the resolution of workout strategies in the commercial loan portfolio. Non-accrual loans. We generally place loans on non-accrual status when they become 90 days past due unless they are well secured and in the process of collection. When a loan is placed on non-accrual status, any interest previously accrued but not collected is reversed from income. Non-accrual loans decreased approximately $3.4 million, to $39.5 million, as of December 31, 2020, from $42.9 million as of December 31, 2019, primarily as a result of the execution and resolution of workout strategies of non-performing loans. Accruing loans past due 90 days or more increased $2.8 million, or 49.1%, primarily due to an increase in commercial real estate and agricultural loan portfolios. Loans are returned to accrual status when all principal and interest amounts contractually due are brought current and when, in the opinion of management, the loans are estimated to be fully collectible as to both principal and interest. For additional information regarding non-performing loans, see “Notes to Consolidated Financial Statements—Loans Held For Investment” included in financial statements included Part IV, Item 15 of this report. 49 OREO. OREO consists of real property acquired through foreclosure on the collateral underlying defaulted loans. We initially record OREO at fair value less estimated selling costs. Any excess of loan carrying value over the fair value of the real estate acquired is recorded as a charge against the allowance for credit losses. Estimated losses that result from the ongoing periodic valuation of these properties are charged to earnings in the period in which they are identified. The fair values of OREO properties are estimated using appraisals and management estimates of current market conditions. OREO properties are appraised every 18-24 months unless deterioration in local market conditions indicates the need to obtain new appraisals sooner. OREO properties are evaluated by management quarterly to determine if additional write-downs are appropriate or necessary based on current market conditions. Quarterly evaluations include a review of the most recent appraisal of the property and reviews of recent appraisals and comparable sales data for similar properties in the same or adjacent market areas. Commercial and agricultural OREO properties are listed with unrelated third party professional real estate agents or brokers local to the areas where the marketed properties are located. Residential properties are typically listed with local realtors, after any redemption period has expired. We rely on these local real estate agents and/or brokers to list the properties on the local multiple listing system, to provide marketing materials and advertisements for the properties, and to conduct open houses. OREO decreased $6.0 million, or 70.6%, to $2.5 million as of December 31, 2020, from $8.5 million as of December 31, 2019. During 2020, we recorded additions to OREO of $3.3 million, wrote down the fair value of OREO properties by $0.1 million, and sold OREO with a book value of $9.2 million. As of December 31, 2020, 69.1% of our OREO balance was related to commercial properties and 30.9% to land properties. OREO decreased $5.9 million, or 41.0%, to $8.5 million as of December 31, 2019, from $14.4 million as of December 31, 2018. During 2019, we recorded additions to OREO of $14.1 million, acquired $2.4 million in conjunction with the IIBK acquisition, wrote down the fair value of OREO properties by $0.9 million, and sold OREO with a book value of $21.8 million. As of December 31, 2019, 25.5% of our OREO balance was related to land and land development properties, 46.8% to commercial properties, 27.0% to residential real estate properties, and 0.7% to construction properties. The following table sets forth the allocation of our non-performing loans among our different types of loans as of the dates indicated. Non-Performing Loans by Loan Type (Dollars in millions) Real estate: Commercial Construction: Land acquisition and development Residential Commercial Total construction Residential Agricultural Total real estate Consumer Commercial Agricultural Other Total non-performing loans 2020 Percent 2019 Percent 2018 Percent 2017 Percent 2016 Percent As of December 31, $ 13.6 28.3 % $ 13.6 28.0 % $ 10.0 17.2 % $ 27.1 37.4 % $ 26.5 34.6 % 1.7 2.3 0.2 4.2 10.6 12.9 56.1 7.5 27.1 9.4 — 0.8 3.5 3.3 1.1 — 1.7 0.1 1.0 3.8 2.0 4.5 8.8 5.1 11.7 8.6 6.2 10.7 3.6 26.9 54.9 48.1 3.6 7.3 3.3 13.0 32.9 20.3 4.5 4.9 0.8 — — — $ 48.0 100.0 % $ 48.6 100.0 % $ 58.1 100.0 % $ 72.5 3.9 1.0 0.2 5.1 6.8 12.6 34.5 3.5 17.1 3.0 — 1.7 — 0.5 2.2 5.7 5.2 26.7 3.5 16.0 2.4 — 6.7 1.7 0.3 8.7 11.8 21.7 59.4 6.0 29.4 5.2 — 4.6 2.3 5.2 12.1 11.8 5.0 66.3 4.6 28.0 1.1 — 5.3 0.5 0.8 6.6 7.1 4.3 44.5 2.9 26.2 3.0 — 100.0 % $ 76.6 6.9 0.6 1.0 8.5 9.3 5.7 58.1 3.8 34.2 3.9 — 100.0 % Collateral-dependent loans. Collateral-dependent loans rely solely on the operation or sale of the collateral for repayment. In evaluating the overall risk associated with a loan, the Company considers character, overall financial condition and resources, and payment record of the borrower; the prospects for support from any financially responsible guarantors; and the nature and degree of protection provided by the cash flow and value of any underlying collateral. The loan may become collateral-dependent where the borrower is experiencing financial difficulty and as sources of repayment become inadequate over time and that repayment is expected to be provided substantially through the operation or sale of the collateral. 50 Troubled Debt Restructurings. Modifications of performing loans are made in the ordinary course of business and are completed on a case-by-case basis as negotiated with the borrower. Loan modifications typically include interest rate concessions, interest-only periods, short-term payment deferrals, and extension of amortization periods to provide payment relief. A loan modification is considered a troubled debt restructuring if the borrower is experiencing financial difficulties and we, for economic or legal reasons, grant a concession to the borrower that we would not otherwise consider. Those modifications deemed to be troubled debt restructurings are monitored centrally to ensure proper classification as a troubled debt restructuring and if or when the loan may be placed on accrual status. As of December 31, 2020, we had loans renegotiated in troubled debt restructurings of $14.5 million, of which $11.3 million were reported as non-accrual loans in the non-performing asset and troubled debt restructurings and non- performing loan tables above. The remaining $3.2 million were on accrual status and are reported as troubled debt restructurings in the non-performing asset and troubled debt restructurings table above. As of December 31, 2019, we had loans renegotiated in troubled debt restructurings of $24.9 million, of which $19.4 million were reported as non-accrual loans in the non-performing asset and troubled debt restructurings and non- performing loan tables above. The remaining $5.5 million were on accrual status and are reported as troubled debt restructurings in the non-performing asset and troubled debt restructurings table above. For additional information regarding loans modified in troubled debt restructurings, see “Notes to Consolidated Financial Statements—Loans Held For Investment” included in financial statements included Part IV, Item 15 of this report. Allowance for Credit Losses The Company performs a quarterly assessment of the adequacy of its allowance for credit losses in accordance with GAAP and as modified by the adoption of CECL. The allowance for credit losses for 2020 comparative periods utilized the incurred loss methodology under historical GAAP as described in our 2019 Form 10-K. The methodology used to assess the adequacy is consistently applied to the Company’s loans held for investment portfolio. The allowance for credit losses is established through a provision for credit losses based on our evaluation of quantitative and qualitative risk factors in our loan portfolio at each balance sheet date. In determining the allowance for credit losses, we estimate losses on specific loans, or groups of loans, where the expected loss can be identified and reasonably determined. The balance of the allowance for credit losses is based on internally assigned risk classifications of loans, historical loan loss rates, changes in the nature or tenure of the loan portfolio, overall portfolio quality, industry concentrations, delinquency trends, current environmental and economic factors, and the estimated impact of current and forecasted economic conditions on certain historical loan loss rates. See the discussion under “Critical Accounting Estimates and Significant Accounting Policies — Allowance for Credit Losses” above. The allowance for credit losses is increased by provisions charged against earnings and net recoveries of charged-off loans and is reduced by negative provisions credited to earnings and net loan charge-offs. The allowance for credit losses consists of three elements: (1) Specific valuation allowances associated with collateral-dependent loans. Specific valuation allowances are determined based on assessment of the fair value of the collateral underlying the loans as determined through independent appraisals, the present value of future cash flows, observable market prices, and any relevant qualitative or environmental factors impacting loans. (2) Historical valuation allowances based on loan loss experience for similar loans with similar characteristics and trends. The Company applies probability of default and loss given default methodologies for all portfolio segments. The Company uses a transition matrix for probability of default components of the methodology and a historical average for the loss given default components of the methodology. The probability of default and loss given default is applied to the current principal balance as of the reporting date. The transition matrix determines the probability of default by tracking the historical movement of loans between loan risk tiers over a defined period of time. Loan transitions are measured by either internal ratings or delinquency status. Those loans tracked by ratings are generally commercial purpose including agricultural, commercial, and commercial real estate. Those loans tracked by delinquency are generally consumer in nature, with the exception of multi-family and credit cards. The loss given default used as the basis for the estimate of credit losses is comprised of the Company’s historical loss experiences from 2008 to the current period, based on a migration analysis of our historical loss experience, designed to account for credit deterioration. The model compares the most recent period losses to prior period defaults to calculate the loss given default, which is averaged over the historical observations. 51 (3) General valuation allowances determined based on changes in the nature of the loan portfolio, overall portfolio quality, industry concentrations, delinquency trends, general economic conditions or forecasts, and other qualitative risk factors, both internal and external to us, including the incorporation of a one-year forecast period for economic conditions. Based on the assessment of the adequacy of the allowance for credit losses, the Company records provisions for credit losses to maintain the allowance for credit losses at appropriate levels. Loans acquired in business combinations are initially recorded at fair value as adjusted for credit risk and an allowance for credit losses at the date of acquisition. For loans with no significant evidence of credit deterioration since origination, the difference between the fair value and the unpaid principal balance of the loan at the acquisition date is amortized into interest income using the effective interest method over the remaining period to contractual maturity. An allowance for credit loss is recorded for the life of loan expected credit losses on loans acquired without evidence of credit deterioration. Subsequent changes to the allowance for credit losses are recorded through provision expense using the same methodology as other loans held for investment. For loans acquired in business combinations with evidence of deterioration in credit quality since origination, the Company determines the fair value of the loans by estimating the amount and timing of principal and interest cash flows initially expected to be collected on the loans and discounting those cash flows at an appropriate market rate of interest. An allowance for credit losses is recognized by estimating the expected credit losses of the purchased asset and recording an adjustment to the acquisition date fair value to establish the initial amortized cost basis of the asset. Differences between the established amortized cost basis, and the unpaid principal balance of the asset, is considered to be a non-credit discount/ premium and is accreted/amortized into interest income using the level yield interest method. Subsequent changes to the allowance for credit losses are recorded through provision expense using the same methodology as other loans held for investment. Loans, or portions thereof, are charged-off against the allowance for credit losses when management believes the collectability of the principal is unlikely, or, with respect to consumer installment loans, according to an established delinquency schedule. Generally, loans are charged-off when (1) there has been no material principal reduction within the previous 90 days and there is no pending sale of collateral or other assets, (2) there is no significant or pending event which will result in principal reduction within the upcoming 90 days, (3) it is clear that we will not be able to collect all or a portion of the loan, (4) payments on the loan are sporadic, will result in an excessive amortization, or are not consistent with the collateral held, or (5) foreclosure or repossession actions are pending. Loan charge-offs do not directly correspond with the receipt of independent appraisals or the use of observable market data if the collateral value is determined to be sufficient to repay the principal balance of the loan. If a collateral-dependent loan is adequately collateralized, a specific valuation allowance is not recorded. As such, significant changes in collateral-dependent and non-performing loans do not necessarily correspond proportionally with changes in the specific valuation component of the allowance for credit losses. Additionally, the Company expects the timing of charge-offs will vary between quarters and will not necessarily correspond proportionally to changes in the allowance for credit losses or changes in non-performing or collateral dependent loans due to timing differences among the initial identification of a collateral-dependent loan, recording of a specific valuation allowance for collateral-dependent loans, and any resulting charge-off of uncollectible principal. 52 The following table sets forth information regarding our allowance for credit losses as of the dates and for the periods indicated. Allowance for Credit Losses (Dollars in millions) As of and for the year ended December 31, Allowance for credit losses on loans: (1) Beginning balance Initial impact of adopting ASC 326 Provision charged to operating expense (2) Charge-offs: $ Real estate Commercial Construction Residential Consumer Commercial Agricultural Total charge-offs Recoveries: Real estate Commercial Construction Residential Agricultural Consumer Commercial Agricultural Total recoveries Net charge-offs Ending balance Allowance for off-balance sheet credit losses: Beginning balance Initial impact of adopting ASC 326 Provision for off-balance sheet credit losses Ending balance Total allowance for credit losses Total provision for credit losses Loans held for investment Average loans Net charge-offs to average loans Allowance to non-accrual loans Allowance to loans held for investment 2020 2019 2018 2017 2016 $ 73.0 $ 72.1 $ 76.2 $ 73.0 30.0 55.5 0.4 0.5 — 10.8 9.1 0.1 20.9 0.3 0.4 0.4 — 3.9 1.7 — 6.7 14.2 $ 144.3 $ $ $ $ $ $ $ — 2.3 1.4 3.7 148.0 56.9 9,807.5 9,825.0 — 13.9 0.2 2.0 1.3 13.0 6.6 0.5 23.6 0.5 1.3 0.9 — 3.6 3.4 — 9.7 13.9 73.0 — — — — 73.0 13.9 8,930.7 8,879.1 — 8.6 1.9 0.7 1.1 11.3 4.7 — 19.7 1.9 0.9 0.9 — 4.5 3.6 0.2 12.0 7.7 $ $ $ $ 73.0 $ $ $ $ — — — — 73.0 8.6 8,470.4 7,985.0 — 11.0 2.3 0.8 1.2 11.3 6.8 0.4 22.8 0.9 0.2 0.3 — 4.2 2.1 — 7.7 15.1 72.1 — — — — 72.1 11.0 7,567.7 6,675.4 $ $ $ $ 76.8 — 10.0 3.5 0.7 1.0 8.6 5.8 0.2 19.8 0.5 1.8 0.3 0.6 2.8 3.2 — 9.2 10.6 76.2 — — — — 76.2 10.0 5,416.7 5,378.3 0.14 % 0.16 % 0.10 % 0.23 % 0.20 % 365.32 1.47 170.16 0.82 134.44 0.86 103.89 0.95 104.67 1.41 (1) Allowance for credit losses on loans (ACLL) for the 2020 periods; allowance for loan losses (ALLL) for the 2019 periods. (2) Provision for credit losses on loans for the 2020 periods; provision for loan losses for the 2019 periods. 53 Our allowance for credit losses on loans was $144.3 million, or 1.47% of loans held for investment, including PPP loans, as of December 31, 2020, as compared to $73.0 million, or 0.82% of loans held for investment, as of December 31, 2019. The increase in the percentage from December 31, 2019 is primarily a result of adoption of the CECL standard and changes in the Company’s internal economic forecast in response to COVID-19 and uncertainty regarding the benefits of government stimulus enacted in response to COVID-19. The allowance for credit losses represents management’s estimate of expected credit losses in the loan portfolio expected over the life of the loan, including the incorporation of a one-year forecast period for economic conditions. While the allowance for credit losses on loans of 1.47% include the PPP loan balances, the allowance for credit losses does not include a reserve on the 100% Small Business Administration guaranteed PPP loans. The allowance for credit losses on loans as a percentage of period-end loans held for investment would have been 12 basis points higher had the PPP loan balances been excluded at December 31, 2020. Although we have established our allowance for credit losses in accordance with GAAP in the United States and we believe that the allowance for credit losses is adequate to provide for known and inherent losses in the portfolio at all times, future provisions will be subject to on-going evaluations of the risks in the loan portfolio. If the economy declines or asset quality deteriorates, material additional provisions could be required. The allowance for credit losses is allocated to loan categories based on the relative risk characteristics, asset classifications, and expected losses of the loan portfolio. The following table provides a summary of the allocation of the allowance for credit losses for specific loan categories as of the dates indicated. The allocations presented should not be interpreted as an indication that charges to the allowance for credit losses will be incurred in these amounts or proportions, or that the portion of the allowance allocated to each loan category represents the total amount available for future losses that may occur within these categories. Allocation of the Allowance for Credit Losses (Dollars in millions) As of December 31, 2020 2019 2018 2017 2016 % of Loan Category to Loans % of Loan Category to Loans Allocated Reserves Allocated Reserves % of Loan Category to Loans % of Loan Category to Loans Allocated Reserves Allocated Reserves Allocated Reserves $ 80.5 23.9 39.2 0.7 — — 65.1 % $ 28.9 66.5 % $ 31.0 66.0 % $ 31.7 65.3 % $ 10.4 22.0 2.5 — N/A 9.9 32.6 1.6 — — 11.7 18.7 3.1 — N/A 8.7 31.3 2.0 — — 12.6 18.4 3.0 — N/A 8.7 30.5 1.2 — — 13.7 19.2 1.8 — N/A 28.6 7.7 38.1 1.8 — — % of Loan Category to Loans 60.4 % 17.9 19.2 2.5 — N/A $ 144.3 100.0 % 73.0 100.0 % $ 73.0 100.0 % $ 72.1 100.0 % $ 76.2 100.0 % Real estate Consumer Commercial Agricultural Other loans Unallocated Totals The allowance for credit losses allocated to real estate loans increased 178.5%, to $80.5 million, as of December 31, 2020, from $28.9 million as of December 31, 2019, primarily due to the adoption of CECL and the expected losses over the life of the loans in the real estate portfolio. The allowance for credit losses allocated to real estate loans decreased 6.8% to $28.9 million as of December 31, 2019, from $31.0 million as of December 31, 2018, primarily due to lower loss rates offset by higher levels of specific reserves in the real estate portfolio. The allowance for credit losses allocated to consumer loans increased 141.4%, to $23.9 million, as of December 31, 2020, from $9.9 million as of December 31, 2019, primarily due to the adoption of CECL and the expected losses over the life of the loans in the consumer portfolio. The allowance for credit losses allocated to consumer loans increased 13.8% to $9.9 million as of December 31, 2019, from $8.7 million as of December 31, 2018, primarily due to higher loss rates within consumer portfolio. The allowance for loan losses allocated to commercial loans increased 20.3% to $39.2 million as of December 31, 2020, from $32.6 million as of December 31, 2019, primarily due to higher loss rates offset by lower levels of specific reserves within the commercial portfolio. The allowance for loan losses allocated to commercial loans increased 4.2% to $32.6 million as of December 31, 2019, from $31.3 million as of December 31, 2018, primarily due to higher loss rates offset by lower levels of specific reserves within the commercial portfolio. 54 Investment Securities We manage our investment portfolio to obtain the highest yield possible while meeting our risk tolerance and liquidity guidelines and satisfying the pledging requirements for deposits of state and political subdivisions and securities sold under repurchase agreements. Our portfolio principally comprises U.S. government agency residential mortgage-backed securities and collateralized mortgage obligations, U.S. government agency securities, and tax-exempt securities. Federal funds sold and interest-bearing deposits in bank are additional investments that are classified as cash equivalents rather than as investment securities. Investment securities classified as available-for-sale are recorded at fair value, while investment securities classified as held-to-maturity are recorded at amortized cost. Unrealized gains or losses, net of the deferred tax effect, on available-for-sale securities are reported as increases or decreases in accumulated other comprehensive income or loss, a component of stockholders’ equity. Investment securities increased $1,008.0 million, or 33.0%, to $4,060.3 million as of December 31, 2020, from $3,052.3 million as of December 31, 2019. The increase is primarily due to the investment of funds generated through deposit growth. Investment securities increased $374.8 million, or 14.0%, to $3,052.3 million as of December 31, 2019, from $2,677.5 million as of December 31, 2018. Approximately $78.7 million of this increase was attributable to the acquisitions of IIBK and CMYF in April 2019 with the remaining increase due to the investment of funds generated through deposit growth. As of December 31, 2020, the estimated duration of our investment portfolio was 3.3 years, as compared to 2.4 years as of December 31, 2019. The weighted average yield on investment securities decreased 37 basis points to 2.02% in 2020, from 2.39% in 2019, and increased 18 basis points to 2.39% in 2019, from 2.21% in 2018. As of December 31, 2020, investment securities with amortized costs and fair values of $2,323.0 million and $2,383.6 million, respectively, were pledged to secure public deposits and securities sold under repurchase agreements, as compared to $2,132.0 million and $2,144.9 million, respectively, as of December 31, 2019. For additional information concerning securities sold under repurchase agreements, see “—Securities Sold Under Repurchase Agreements” included herein. Mortgage-backed securities and, to a limited extent other securities, have uncertain cash flow characteristics that present additional interest rate risk in the form of prepayment or extension risk primarily caused by changes in market interest rates. This additional risk is generally rewarded in the form of higher yields. Maturities of mortgage-backed securities presented below have been adjusted to reflect shorter maturities based upon estimated prepayments of principal. As of December 31, 2020, the carrying value of our investments in non-agency mortgage-backed securities totaled $10.9 million. All other mortgage-backed securities included in the table below were issued by U.S. government agencies and corporations. As of December 31, 2020, there were no significant concentrations of investments (greater than 10% of stockholders’ equity) in any individual security issuer, except for U.S. government or agency-backed securities. Approximately 82.8% and 80.1% of our tax-exempt securities were general obligation securities as of December 31, 2020 and 2019, respectively, of which 67.4% and 61.0%, respectively, were issued by political subdivisions or agencies within the states of Idaho, Montana, Oregon, South Dakota, Washington, and Wyoming. As of December 31, 2020, we had available-for-sale investment securities with fair values aggregating $16.6 million that had been in a continuous loss position more than 12 months. Gross unrealized losses on these securities totaled $0.2 million as of December 31, 2020, and were attributable to changes in interest rates. As the Company does not have the intent to sell any of the available-for-sale securities and it is more likely than not that the Company will not have to sell any securities before a recovery in cost, no impairment or credit losses were recorded during 2020, 2019, or 2018. The following table sets forth the carrying value as of December 31, 2020 and 2019, and the percentage of total investment securities and weighted average yields on investment securities as of December 31, 2020. Weighted-average yields have been computed on a fully taxable-equivalent basis using a tax rate of 21%. 55 Securities Maturities and Yield (Dollars in millions) U.S. Treasuries 2019 2020 Carrying Value Carrying Value % of Total Investment Securities Weighted Average FTE Yield Maturing within one year Mark-to-market adjustments on securities available-for-sale $ Total U.S. government agency securities Maturing within one year Maturing in one to five years Maturing in five to ten years Mark-to-market adjustments on securities available-for-sale (0.7) 9.0 — 9.0 $ — — — — % — — Total Mortgage-backed securities Maturing within one year Maturing in one to five years Maturing in five to ten years Maturing after ten years Mark-to-market adjustments on securities available-for-sale Total Marketable CDs Maturing within one year Maturing in one to five years Mark-to-market adjustments on securities available-for-sale Total Tax exempt securities Maturing within one year Maturing in one to five years Maturing in five to ten years Maturing after ten years Mark-to-market adjustments on securities available-for-sale Total Corporate securities Maturing within one year Maturing in one to five years Maturing in five to ten years Mark-to-market adjustments on securities available-for-sale Total Other securities Maturing in one to five years Mark-to-market adjustments on securities available-for-sale Total Total 120.4 130.7 136.2 1.5 1.1 330.3 (1.0) 386.6 331.9 543.5 657.1 1,246.2 1,505.8 116.8 445.9 13.2 141.1 538.7 66.8 2,365.6 2,909.5 2.9 0.3 — 3.2 13.9 60.4 52.3 10.8 0.8 138.2 26.2 78.2 44.0 1.2 149.6 0.1 — 0.1 0.2 — — 0.2 12.9 52.0 59.8 384.0 3.8 512.5 24.0 56.6 219.1 6.4 306.1 0.1 — 0.1 0.04 0.03 8.13 (0.03) 8.17 16.18 37.09 3.48 13.27 1.65 71.67 — — — — 0.32 1.28 1.47 9.46 0.09 12.62 0.59 1.39 5.40 0.16 7.54 — — — — % NA — 1.56 5.17 1.42 NA 1.44 2.59 1.09 2.44 2.05 NA 1.90 2.50 — NA 2.50 3.01 3.34 3.03 2.76 NA 2.82 2.44 2.55 2.82 NA 2.68 7.72 NA 7.72 2.02 % $ 3,052.3 $ 4,060.3 100.00 % Maturities of the 2020 securities noted above reflect $282.4 million of investment securities at their final maturities, which have call provisions within the next year. Based on current market interest rates, management expects approximately $81.5 million of these securities will be called in 2021. For additional information concerning investment securities, see “Notes to Consolidated Financial Statements — Investment Securities” included in Part IV, Item 15. 56 Goodwill and Intangibles Goodwill was $621.6 million as of December 31, 2020 and 2019. Goodwill increased $74.9 million, or 13.7%, to $621.6 million as of December 31, 2019, from $546.7 million as of December 31, 2018, attributable to goodwill recorded in conjunction with the acquisitions of IIBK and CMYF and finalization of provisional amounts related to INB. Core deposit intangibles represent the intangible value of depositor relationships resulting from deposit liabilities assumed and are amortized based on the estimated useful lives of the related deposits. Core deposit intangibles, net of accumulated amortization, decreased $10.9 million, or 17.6%, to $51.2 million as of December 31, 2020, from $62.1 million as of December 31, 2019, due to scheduled amortization expense. Core deposit intangibles, net of accumulated amortization increased $5.2 million, or 9.1%, to $62.1 million as of December 31, 2019, from $56.9 million as of December 31, 2018, attributable to the core deposit intangibles recorded in conjunction with the acquisitions of IIBK and CMYF. We acquired core deposit intangibles of $16.6 million in conjunction with our acquisitions of IIBK and CMYF in April 2019 and $15.7 million in conjunction with our acquisition of INB in August 2018. Deposits We emphasize developing relationships with our clients in order to increase our core deposit base, which is our primary funding source. Our deposits consist of non-interest bearing and interest-bearing demand, savings, individual retirement, and time deposit accounts. The following table summarizes our deposits as of the dates indicated: Deposits (Dollars in millions) As of December 31, 2020 Percent 2019 Percent 2018 Percent 2017 Percent 2016 Percent Non-interest bearing demand Interest bearing: Demand Savings Time, $100 or more Time, other Total interest bearing Total deposits $ 4,633.5 4,118.9 4,405.9 419.3 639.4 9,583.5 $ 14,217.0 32.6 % $ 3,426.5 29.4 % $ 3,158.3 29.6 % $ 2,900.0 29.2 % $ 1,906.3 25.8 % 3,195.4 29.0 3,591.6 31.0 651.1 2.9 798.9 4.5 8,237.0 67.4 100.0 % $ 11,663.5 27.4 30.8 5.6 6.8 70.6 2,957.5 3,247.9 547.6 769.4 7,522.4 100.0 % $ 10,680.7 27.7 30.4 5.1 7.2 70.4 2,787.5 3,095.4 432.0 720.0 7,034.9 100.0 % $ 9,934.9 28.1 31.2 4.3 7.2 70.8 2,276.5 2,141.8 461.4 590.1 5,469.8 100.0 % $ 7,376.1 30.9 29.0 6.3 8.0 74.2 100.0 % Total deposits increased $2,553.5 million, or 21.9%, to $14,217.0 million as of December 31, 2020, from $11,663.5 million as of December 31, 2019, primarily related to an increase of $1,207.0 million in non-interest-bearing business deposits and an increase in interest bearing demand and savings deposits. These increases were partially offset by decreases in interest bearing time deposits. During 2020, the mix of deposits shifted slightly from higher-costing time deposits to lower-costing savings and demand deposits. Deposit mix fluctuations and deposit growth were driven by lower interest rates paid on deposits as a result of a drop in the federal funds rate and a change in client behavior related to the COVID-19 and economic stimulus provided by the U.S. government. Total deposits increased $982.8 million, or 9.2%, to $11,663.5 million as of December 31, 2019, from $10,680.7 million as of December 31, 2018, with approximately $706.7 million of the increase attributable to the IIBK and CMYF acquisitions in April 2019. Non-interest-bearing demand deposits. Non-interest-bearing demand deposits increased $1,207.0 million, or 35.2%, to $4,633.5 million as of December 31, 2020, from $3,426.5 million as of December 31, 2019. The increase in 2020 was largely driven by changes in client behavior related to COVID-19 and the economic stimulus provided by the U.S. government. Non-interest-bearing demand deposits increased $268.2 million, or 8.5%, to $3,426.5 million as of December 31, 2019, from $3,158.3 million as of December 31, 2018. Approximately $244.9 million of the increase in 2019 was attributable to the acquisitions of IIBK and CMYF in April 2019. Exclusive of the IIBK and CMYF acquisitions, non- interest-bearing demand deposits decreased organically $23.3 million, or 0.7%. Interest bearing demand deposits. Interest bearing demand deposits increased $923.5 million, or 28.9%, to $4,118.9 million as of December 31, 2020, from $3,195.4 million as of December 31, 2019. The increase in 2020 was largely driven by changes in client behavior related to COVID-19 and the economic stimulus provided by the U.S. government. Interest- bearing demand deposits increased $237.9 million, or 8.0%, to $3,195.4 million as of December 31, 2019, from $2,957.5 million as of December 31, 2018. Approximately $171.8 million of the increase in 2019 was attributable to the acquisitions of IIBK and CMYF in April 2019. Exclusive of the IIBK and CMYF acquisitions, interest bearing demand deposits decreased organically $66.1 million, or 2.2%. 57 Savings deposits. Savings deposits increased $814.3 million, or 22.7%, to $4,405.9 million as of December 31, 2020, from $3,591.6 million as of December 31, 2019. The increase in 2020 was largely driven by changes in client behavior related to COVID-19 and the economic stimulus provided by the U.S. government. Savings deposits increased $343.7 million, or 10.6%, to $3,591.6 million as of December 31, 2019, from $3,247.9 million as of December 31, 2018. Approximately $254.7 million of the increase in 2019 was attributable to the acquisitions of IIBK and CMYF in April 2019. Exclusive of the IIBK and CMYF acquisitions, savings deposits decreased $89.0 million, or 2.7%. Time deposits of $100,000 or more. Time deposits of $100,000 or more decreased $231.8 million, or 35.6%, to $419.3 million as of December 31, 2020, from $651.1 million as of December 31, 2019. The decrease in 2020 was largely driven by changes in client behavior related to COVID-19 and the economic stimulus provided by the U.S. government. Time deposits of $100,000 or more increased $103.5 million, or 18.9%, to $651.1 million as of December 31, 2019, from $547.6 million as of December 31, 2018. Approximately $26.4 million of the increase in 2019 was attributable to the acquisitions of IIBK and CMYF in April 2019. Exclusive of the IIBK and CMYF acquisitions, time deposits of $100,000 or more increased organically $77.1 million, or 14.1%. Other time deposits. Other time deposits decreased $159.5 million, or 20.0%, to $639.4 million as of December 31, 2020, from $798.9 million as of December 31, 2019. The decrease in 2020 was largely driven by changes in client behavior related to COVID-19 and the economic stimulus provided by the U.S. government. Other time deposits increased $29.5 million, or 3.8%, to $798.9 million as of December 31, 2019, from $769.4 million as of December 31, 2018. Approximately $8.9 million of this increase was attributable to the acquisitions of IIBK and CMYF in April 2019. Exclusive of the IIBK and CMYF acquisitions, other time deposits decreased $20.6 million, or 2.7%. As of December 31, 2020 and 2019, we had Certificate of Deposit Account Registry Service, or CDARS, deposits of $97.3 million and $117.7 million, respectively. As of December 31, 2020, we had no brokered deposits and as of December 31, 2019 we had brokered deposits of $2.9 million, which were acquired through acquisitions. For additional information concerning client deposits, including the use of repurchase agreements, see “Business— Community Banking—Deposit Products,” included in Part I, Item 1 and “Notes to Consolidated Financial Statements— Deposits,” included in Part IV, Item 15 of this report. Securities Sold Under Repurchase Agreements Under repurchase agreements with commercial and municipal depositors, client deposit balances are invested in short- term U.S. government agency securities overnight and are then repurchased the following day. All outstanding repurchase agreements are due in one day and balances fluctuate in the normal course of business. Repurchase agreement balances increased $393.8 million, or 56.5%, to $1,091.4 million as of December 31, 2020, from $697.6 million as of December 31, 2019, and decreased $14.8 million, or 2.1%, as of December 31, 2019 from $712.4 million as of December 31, 2018. The following table sets forth certain information regarding securities sold under repurchase agreements as of the dates indicated: Securities Sold Under Repurchase Agreements (Dollars in millions) As of and for the year ended December 31, Securities sold under repurchase agreements: Balance at period end Average balance Maximum amount outstanding at any month-end Average interest rate: During the year At period end Long-term Debt 2020 2019 2018 $ $ 1,091.4 765.8 1,092.1 697.6 677.3 713.0 $ 712.4 642.8 712.4 0.12 % 0.03 0.58 % 0.20 0.42 % 0.59 Long-term debt increased $98.5 million, or 708.6%, to $112.4 million as of December 31, 2020, from $13.9 million as of December 31, 2019. In May 2020, the Company issued $100.0 million of subordinated notes due May 15, 2030. The subordinated notes were issued with a fixed-to-floating rate of 5.25% and an effective rate of 5.33%, due to issuance costs. 58 Long-term debt decreased $1.9 million, or 12.0%, to $13.9 million as of December 31, 2019, from $15.8 million as of December 31, 2018, primarily due to the redemption of one note payable maturing September 2032. For additional information regarding the long-term debt, see “Notes to Consolidated Financial Statements—Long-Term Debt and Other Borrowed Funds,” included in Part IV, Item 15 of this report. Accounts Payable and Accrued Expenses Accounts payable and accrued expenses increased $14.8 million, or 11.4%, to $144.4 million as of December 31, 2020, from $129.6 million as of December 31, 2019, attributable to an increase in forward contracts, higher incentive compensation accruals, and other fluctuations in the normal course of business. Accounts payable and accrued expenses increased $35.5 million, or 37.7%, to $129.6 million as of December 31, 2019, from $94.1 million as of December 31, 2018, primarily attributable to the Company recognizing $39.6 million in liabilities related to leases, as a result of the adoption of ASU 2016-02, on January 1, 2019, in addition to fluctuations in the normal course of business. Deferred Tax Liability/Asset The net deferred tax liability increased $0.5 million, or 1.9%, to $27.2 million as of December 31, 2020, from $26.7 million as of December 31, 2019. The net deferred tax liability increased $18.1 million, or 210.5%, to $26.7 million as of December 31, 2019, from $8.6 million as of December 31, 2018, primarily due to decreases in deferred tax assets as a result of the utilization of NOL carryforwards, reduction of deferred compensation liabilities, and an increase in unrealized gains in our investment portfolio; the decreases were offset by increases in deferred tax liabilities related to amortization of intangible assets and an increase in mortgage servicing rights retained. Contractual Obligations Contractual obligations as of December 31, 2020 are summarized in the following table. Contractual Obligations (Dollars in millions) Deposits without a stated maturity Time deposits Securities sold under repurchase agreements Long-term debt obligations (1) Financing lease obligations Operating lease obligations Purchase obligations (2) Subordinated debentures held by subsidiary trusts (3) Total contractual obligations Within One Year One Year to Three Years Payments Due Three Years to Five Years After Five Years $ $ 13,158.3 $ 817.4 1,091.4 — 0.1 7.0 4.6 — 15,078.8 $ — $ 201.1 — 5.1 0.2 11.7 — — 218.1 $ — $ 39.2 — — 0.2 8.6 — — 48.0 $ — $ 1.0 — 106.2 0.6 15.4 — 87.0 210.2 $ Total 13,158.3 1,058.7 1,091.4 111.3 1.1 42.7 4.6 87.0 15,555.1 (1) Long-term debt obligations consists of fixed rate note payables with various interest rates from 1.00% to 6.24% and maturities from July 29, 2022 through December 31, 2041 and 5.25% fixed-to-floating rate subordinated notes due May 15, 2030. For additional information concerning long-term debt, see “Notes to Consolidated Financial Statements—Long Term Debt and Other Borrowed Funds” included in Part IV, Item 15. (2) Purchase obligations relate to obligations under construction contracts to build or renovate banking offices. (3) The subordinated debentures are unsecured, with various interest rates and maturities from June 30, 2035 through April 1, 2038. Interest distributions are payable quarterly; however, we may defer interest payments at any time for a period not exceeding 20 consecutive quarters. For additional information concerning the subordinated debentures, see “Notes to Consolidated Financial Statements—Subordinated Debentures Held by Subsidiary Trusts” included in Part IV, Item 15. We also have obligations under a post-retirement healthcare benefit plan. These obligations represent actuarial determined future benefit payments to eligible plan participants. See “Notes to Consolidated Financial Statements — Employee Benefit Plans” included in Part IV, Item 15. Off-Balance Sheet Arrangements We have entered into various arrangements not reflected on the consolidated balance sheet that have or are reasonably likely to have a current or future effect on our financial condition, results of operations, or liquidity. These include guarantees, commitments to extend credit, and standby letters of credit. 59 We guarantee the distributions and payments for redemption or liquidation of capital trust preferred securities issued by our wholly-owned subsidiary business trusts to the extent of funds held by the trusts. Although the guarantees are not separately recorded, the obligations underlying the guarantees are fully reflected on our consolidated balance sheets as subordinated debentures held by subsidiary trusts. The subordinated debentures currently qualify as tier 1 capital under the Federal Reserve capital adequacy guidelines. For additional information regarding the subordinated debentures, see “Notes to Consolidated Financial Statements—Subordinated Debentures Held by Subsidiary Trusts” included in Part IV, Item 15. We are a party to financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of our clients. These financial instruments include commitments to extend credit and standby letters of credit. For additional information regarding our off-balance sheet arrangements, see “Notes to Consolidated Financial Statements—Financial Instruments with Off-Balance Sheet Risk” included in Part IV, Item 15. Capital Resources and Liquidity Management Capital Resources Stockholders’ equity is influenced primarily by earnings, dividends, sales and redemptions of common stock, and changes in the unrealized holding gains or losses, net of taxes, on available-for-sale investment securities. Stockholders’ equity decreased $54.1 million, or 2.7%, to $1,959.8 million as of December 31, 2020 from $2,013.9 million as of December 31, 2019, due to stock repurchases related to the Company’s stock repurchase program, stock repurchases of vested restricted shares tendered in lieu of cash for payment of income tax withholding amounts by participants, regular and special cash dividends paid to common shareholders during 2020 of $128.6 million, and the cumulative effect of adopting ASC 326, a new accounting principle. This decrease was offset by retention of earnings, other comprehensive income, and proceeds from stock option exercises. Stockholders’ equity increased $320.0 million, or 18.9%, to $2,013.9 million as of December 31, 2019 from $1,693.9 million as of December 31, 2018, due primarily to the retention of earnings, other comprehensive income, proceeds from stock option exercises, and issuance of additional Class A common stock as consideration for the acquisitions of IIBK and CMYF. This increase was offset by stock repurchases of vested restricted shares tendered in lieu of cash for payment of income tax withholding amounts by participants and aggregate cash dividends of $79.2 million to common shareholders during 2019. On January 28, 2021, we declared a quarterly dividend to common stockholders of $0.41 per share, which was paid on February 19, 2021 to shareholders of record as of February 9, 2021. The dividend equates to a 4.3% annual yield based on the $37.95 average closing pricing of the Company’s common stock as reported on NASDAQ during the fourth quarter of 2020. On February 19, 2020, we paid a special dividend to common stockholders of $0.60 per share on March 12, 2020 to shareholders of record as of March 2, 2020. During 2020, the Company issued 19,491 shares of its Class A common stock to directors for their annual service on the Company’s board of directors. The aggregate value of the shares issued to directors of $0.6 million is included in stock- based compensation expense in the accompanying consolidated statements of changes in stockholders’ equity. On June 11, 2019, the Company’s board of directors adopted a stock repurchase program permitting the Company to repurchase up to 2.5 million of its outstanding shares of Class A common stock. On March 23, 2020, the Company’s board of directors suspended stock repurchases in response to the COVID-19 pandemic. Effective August 24, 2020, the Company’s board of directors lifted the temporary suspension of the Company’s stock repurchase program. On September 12, 2020, the Company’s board of directors increased the number of shares of Class A common stock authorized to be repurchased by the Company under the stock repurchase program by an additional 3.0 million shares bringing the total number of shares authorized under the program to 5.5 million shares. During 2020, the Company repurchased and retired 3.5 million shares of Class A common stock under the stock repurchase program. For additional information regarding the repurchases, see “Notes to Consolidated Financial Statements—Capital Stock and Dividend Restrictions” included in Part IV, Item 15 of this report. On April 8, 2019, the Company issued 3,871,422 and 463,134 shares of its Class A common stock with an aggregate value of $157.3 million and $18.8 million as consideration for the acquisitions of IIBK and CMYF, respectively. 60 As a bank holding company, the Company must comply with the capital requirements established by the Federal Reserve, and our subsidiary Bank must comply with the capital requirements established by the FDIC. The current risk- based guidelines applicable to us and our Bank are based on the Basel III framework, as implemented by the federal bank regulators. As of December 31, 2020 and 2019, the Company had capital levels that, in all cases, exceeded the guidelines to be deemed “well-capitalized.” For additional information regarding our capital levels, see “Notes to Consolidated Financial Statements—Regulatory Capital,” included in Part IV, Item 15 of this report. Liquidity Liquidity measures our ability to meet current and future cash flow needs on a timely basis and at a reasonable cost. We manage our liquidity position to meet the daily cash flow needs of clients, while maintaining an appropriate balance between assets and liabilities to meet the return on investment objectives of our shareholders. Our liquidity position is supported by management of liquid assets and liabilities and access to alternative sources of funds. Liquid assets include cash, interest bearing deposits in banks, federal funds sold, available-for-sale investment securities, and maturing or prepaying balances in our held-to-maturity investment and loan portfolios. Liquid liabilities include core deposits, federal funds purchased, securities sold under repurchase agreements, and borrowings. Other sources of liquidity include the sale of loans, the ability to acquire additional national market funds through non-core deposits, the issuance of additional collateralized borrowings such as FHLB advances, the issuance of debt securities, additional borrowings through the Federal Reserve’s discount window, and the issuance of preferred or common securities. Our short-term and long-term liquidity requirements are primarily to fund on-going operations, including payment of interest on deposits and debt, extensions of credit to borrowers, capital expenditures, and shareholder dividends. These liquidity requirements are met primarily through cash flow from operations, redeployment of prepaying and maturing balances in our loan and investment portfolios, debt financing, and increases in client deposits. For additional information regarding our operating, investing and financing cash flows, see “Consolidated Financial Statements—Consolidated Statements of Cash Flows,” included in Part IV. As a holding company, we are a corporation separate and apart from our subsidiary Bank and, therefore, we provide for our own liquidity. Our primary sources of funding include management fees and dividends declared and paid by the Bank and access to capital markets. There are statutory, regulatory, and debt covenant limitations that affect the ability of our Bank to pay dividends to us. Management believes that such limitations will not impact our ability to meet our ongoing short-term cash obligations. For additional information regarding dividend restrictions, see “Financial Condition—Capital Resources and Liquidity Management” above, “Business—Government Regulation and Supervision—Dividends and Restrictions on Transfers of Funds” included in Part I, Item 1 of this report, and “Risk Factors—Liquidity Risks and Regulatory and Compliance Risks” included in Part I, Item 1A of this report. Management continuously monitors our liquidity position and adjustments are made to the balance between sources and uses of funds as deemed appropriate. Our management is not aware of any events that are reasonably likely to have a material adverse effect on our liquidity, capital resources, or operations. In addition, our management is not aware of any regulatory recommendations regarding liquidity, which if implemented, would have a material adverse effect on us. Item 7A. Quantitative and Qualitative Disclosures About Market Risk Our primary market risk exposure is interest rate risk. Our business and the composition of our balance sheet consists of investments in interest earning assets (principally loans and investment securities) which are primarily funded by interest bearing liabilities (deposits and indebtedness). Such financial instruments have varying levels of sensitivity to changes in market interest rates. Interest rate risk results when, due to different maturity dates and repricing intervals, interest rate indices for interest earning assets fluctuate adversely relative to interest bearing liabilities, thereby creating a risk of decreased net earnings and cash flow. Although we characterize some of our interest-sensitive assets as securities available-for-sale, such securities are not purchased with the intent to sell in the near term. Rather, such securities may be sold in response to or in anticipation of changes in interest rates and resulting prepayment risk. See “Notes to Consolidated Financial Statements—Summary of Significant Accounting Policies” included in Part IV, Item 15 of this report. 61 Asset Liability Management The goal of asset liability management is the prudent control of market risk, liquidity, and capital. Asset liability management is governed by policies, goals, and objectives adopted and reviewed by the Bank’s board of directors. Development of asset liability management strategies is the responsibility of the Asset Liability Committee, or ALCO, which is composed of members of senior management. Interest Rate Risk Interest rate risk is the risk of loss of future earnings or long-term value due to changes in interest rates. Our primary source of earnings is net interest income, which is affected by changes in interest rates, the relationship between rates on interest-bearing assets and liabilities, the impact of interest rate fluctuations on asset prepayments, and the mix of interest- bearing assets and liabilities. The ability to optimize net interest income is largely dependent upon the achievement of an interest rate spread that can be managed during periods of fluctuating interest rates. Interest sensitivity is a measure of the extent to which net interest income will be affected by market interest rates over a period of time. Interest rate sensitivity is related to the difference between amounts of interest earning assets and interest-bearing liabilities which either reprice or mature within a given period of time. The difference is known as interest rate sensitivity gap. The following table shows interest rate sensitivity gaps and the earnings sensitivity ratio for different intervals as of December 31, 2020. The information presented in the table is based on our mix of interest earning assets and interest- bearing liabilities and historical experience regarding their interest rate sensitivity. Interest Rate Sensitivity Gaps (Dollars in millions) Interest earning assets: Loans (1) Investment securities (2) Interest bearing deposits in banks Federal funds sold Total interest earning assets Interest bearing liabilities: Interest bearing demand accounts (3) Savings deposits (3) Time deposits, $100 or more Other time deposits Securities sold under repurchase agreements Long-term debt Subordinated debentures held by subsidiary trusts Total interest bearing liabilities Rate gap Cumulative rate gap Cumulative rate gap as a percentage of total interest earning assets Projected Maturity or Repricing Three Months or Less Three Months to One Year One Year to Five Years After Five Years Total $ $ $ $ $ $ 2,981.4 309.7 2,011.5 0.1 $ 2,246.2 575.9 2.2 — 4,090.1 $ 2,178.6 1.5 — 450.3 $ 996.1 0.1 — 9,768.0 4,060.3 2,015.3 0.1 5,302.7 $ 2,824.3 $ 6,270.2 $ 1,446.5 $ 15,843.7 1,250.7 2,462.4 92.7 247.4 1,091.4 — 87.0 5,231.6 71.1 71.1 $ $ $ — 1,032.2 223.3 254.0 — 0.1 — 1,509.6 1,314.7 1,385.8 $ $ $ 2,868.2 $ 911.3 102.9 137.5 — 5.5 — 4,025.4 $ 2,244.8 $ 3,630.6 — $ — 0.4 0.5 — 106.8 — 4,118.9 4,405.9 419.3 639.4 1,091.4 112.4 87.0 107.7 $ 10,874.3 4,969.4 1,338.8 $ 4,969.4 0.45 % 8.75 % 22.92 % 31.37 % 31.37 % (1) Does not include non-accrual loans of $39.5 million. Variable rate loans are included in the three months or less category in the above table although certain of these loans have reached interest rate floors and may not immediately reprice. (2) Adjusted to reflect: (a) expected shorter maturities based upon our historical experience of early prepayments of principal, and (3) (b) the redemption of callable securities on their next call date. Interest bearing demand and savings deposits, while technically subject to immediate withdrawal, actually display sensitivity characteristics that generally fall within one to five years. Their allocation is presented based on those sensitivity characteristics. If these deposits were included in the three month or less category, the above table would reflect a negative three month gap of $4.7 million, a negative cumulative one year gap of $2.4 million, and a positive cumulative one to five year gap of $3.6 million. 62 Net Interest Income Sensitivity We believe net interest income sensitivity provides the best perspective of how day-to-day decisions affect our interest rate risk profile. We monitor net interest income sensitivity by utilizing an income simulation model to subject 12 and 24 month net interest income to various rate movements. Simulations modeled quarterly include scenarios where market rates change instantaneously up or down in a parallel manner and scenarios where market rates gradually increase 200 basis points. Estimates produced by our income simulation model are based on numerous assumptions including, but not limited to: (1) the timing of changes in interest rates, (2) shifts or rotations in the yield curve, (3) repricing characteristics for market rate sensitive instruments, (4) differing sensitivities of financial instruments due to differing underlying rate indices, (5) varying loan prepayment speeds for different interest rate scenarios, (6) the effect of interest rate limitations in our assets, such as caps and floors, and (7) overall growth and repayment rates and product mix of assets and liabilities. Because of limitations inherent in any approach used to measure interest rate risk, simulation results are not intended as a forecast of the actual effect of a change in market interest rates on our results, but rather to provide insight into our current interest rate exposure and execute appropriate asset/liability management strategies accordingly. We target a mix of interest earning assets and interest bearing liabilities such that no more than 4.0% of the net interest income will be at risk over a one-year period, should interest rates immediately shift up or down 100 basis points, or gradually shift up 200 basis points over a 12 month period. As of December 31, 2020, our income simulation model predicted net interest income would increase 7.00% on an immediate 100 basis point shock, assuming a static balance sheet. Assuming a 0.5% gradual increase in interest rates during each of the next four consecutive quarters, net interest income would increase $27.6 million or 6.32%. Conversely, if interest rates declined 100 basis points, the model indicates that net interest income would decline 7.04% under a static balance sheet scenario. We did not simulate the gradual 200 basis points decrease in interest rates due to the low rate environment as of December 31, 2020. Additionally, rates are modeled not to fall below 0% with a decrease in interest rates. Although we did not simulate a ramp decrease in interest rates due to the low rate environment as of December 31, 2020, a further decline in interest rates would result in compression of our net interest income. Each scenario predicts that our interest bearing assets reprice faster than our interest bearing liabilities. We are not currently engaged in significant derivative or balance sheet hedging activities to manage our interest rate risk. The preceding interest rate sensitivity analysis does not represent a forecast and should not be relied upon as being indicative of expected operating results. Recent Accounting Pronouncements The expected impact of accounting standards recently issued but not yet adopted are discussed in “Notes to Consolidated Financial Statements—Authoritative Accounting Guidance” included in Part IV, Item 15 of this report. Item 8. Financial Statements and Supplementary Data The following consolidated financial statements of First Interstate BancSystem, Inc. and subsidiaries are contained in Part IV, Item 15 of this report and are incorporated herein by reference. Report of RSM US LLP, Independent Registered Public Accounting Firm Consolidated Balance Sheets — December 31, 2020 and 2019 Consolidated Statements of Income — Years Ended December 31, 2020, 2019, and 2018 Consolidated Statements of Comprehensive Income — Years Ended December 31, 2020, 2019, and 2018 Consolidated Statements of Stockholders’ Equity — Years Ended December 31, 2020, 2019, and 2018 Consolidated Statements of Cash Flows — Years Ended December 31, 2020, 2019, and 2018 Notes to Consolidated Financial Statements Refer to Part II, Item 7, “Management’s Discussion and Analysis of Financial Condition and Results of Operations” for selected quarterly financial data. Item 9. Changes in and Disagreements with Accountants on Accounting and Financial Disclosure There have been no disagreements with accountants on accounting and financial disclosure. 63 Disclosure Controls and Procedures Item 9A. Controls and Procedures We have established and maintain disclosure controls and procedures, as defined under Rules 13a-15(e) and 15d-15(e) of the Exchange Act. As of December 31, 2020, our management evaluated, under the supervision and with the participation of the Chief Executive Officer and Chief Financial Officer, the effectiveness of the design and operation of our disclosure controls and procedures. Based on that evaluation, the Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures, as of December 31, 2020, were effective in ensuring that information required to be disclosed by us in reports that we file or submit under the Exchange Act is recorded, processed, summarized, and reported within the time periods required by the SEC’s rules and forms and is accumulated and communicated to our management, including our Chief Executive Officer and Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure. Management’s Report on Internal Control over Financial Reporting The Company’s management is responsible for establishing and maintaining adequate internal control over financial reporting, as such term is defined in the Exchange Act Rules 13a-15(f) and 15d-15(f). Internal control over financial reporting includes controls and procedures designed to provide reasonable assurance to our management and board of directors regarding the preparation and fair presentation of our published financial statements in accordance with U.S. generally accepted accounting principles. All internal control systems, no matter how well designed, have inherent limitations. Therefore, even systems deemed to be effective can provide only reasonable assurance with respect to financial statement preparation and presentation. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate due to changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate. Our management, including the Chief Executive Officer and the Chief Financial Officer, assessed the effectiveness of our system of internal control over financial reporting as of December 31, 2020 based on the guidelines established in the Internal Control--Integrated Framework (2013 framework) issued by the Committee of Sponsoring Organizations of the Treadway Commission. Based on our assessment, we believe that, as of December 31, 2020, our system of internal control over financial reporting was effective to provide reasonable assurance regarding the reliability of our financial reporting and the preparation of our financial statements for external purposes in accordance with U.S. generally accepted accounting principles. RSM US LLP, the independent registered public accounting firm that audited our consolidated financial statements included in this Annual Report on Form 10-K, has issued a report on the effectiveness of our internal control over financial reporting as of December 31, 2020. The report, which expresses an unqualified opinion on the effectiveness of our internal control over financial reporting as of December 31, 2020, is included below. 64 Report of Independent Registered Public Accounting Firm To the Shareholders and the Board of Directors of First Interstate BancSystem, Inc. Opinion on the Internal Control Over Financial Reporting We have audited First Interstate BancSystem, Inc. and its subsidiaries’ (the Company) internal control over financial reporting as of December 31, 2020, based on criteria established in Internal Control - Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission in 2013. In our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2020, based on criteria established in Internal Control - Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission in 2013. We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the consolidated balance sheets as of December 31, 2020 and 2019, the consolidated statements of income, comprehensive income, stockholders’ equity and cash flows for each of the three years in the period ended December 31, 2020, and the related notes to the consolidated financial statements and our report dated February 26, 2021 expressed an unqualified opinion. Basis for Opinion The Company’s management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting in the accompanying Management’s Report on Internal Control over Financial Reporting. Our responsibility is to express an opinion on the Company's internal control over financial reporting based on our audit. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB. We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audit also included performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion. Definition and Limitations of Internal Control Over Financial Reporting A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of the company's assets that could have a material effect on the financial statements. Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate. /s/ RSM US LLP Des Moines, Iowa February 26, 2021 65 There were no items required to be disclosed in a report on Form 8-K during the fourth quarter of 2020 that were not reported. Item 9B. Other Information PART III Item 10. Directors, Executive Officers, and Corporate Governance Information concerning directors, executive officers, and corporate governance is set forth under the heading, “Directors and Executive Officers” and “Corporate Governance” in our Proxy Statement relating to our 2021 annual meeting of shareholders and is incorporated herein by reference. Information concerning our compliance with section 16(a) of the Securities Exchange Act of 1934 is set forth under the heading “Delinquent Section 16(a) Reports” in our Proxy Statement relating to our 2021 annual meeting of shareholders and is herein incorporated herein by reference. Item 11. Executive Compensation Information concerning executive compensation is set forth under the headings “Compensation Discussion and Analysis” and “Compensation of Executive Officers and Directors” in our Proxy Statement relating to our 2021 annual meeting of shareholders and is herein incorporated by reference. Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters Information concerning security ownership of certain beneficial owners and management as well as related stockholder matters is set forth under the heading “Security Ownership of Certain Beneficial Owners and Management” and “Equity Compensation Plans” in our Proxy Statement relating to our 2021 annual meeting of shareholders and is herein incorporated herein by reference. The following table provides information, as of December 31, 2020, regarding our equity compensation plans. Plan Category Equity compensation plans approved by shareholders(2) Equity compensation plans not approved by shareholders Total Number of Securities to be Issued Upon Exercise of Outstanding Options, Warrants, and Rights Weighted Average Exercise Price of Outstanding Options, Warrants, and Rights Number of Securities Remaining Available For Future Issuance Under Equity Compensation Plans(1) 79,318 NA 79,318 $14.49 NA $14.49 1,141,186 NA 1,141,186 (1) Excludes number of securities to be issued upon exercise of outstanding options, warrants and rights. (2) Represents stock options issued pursuant to the 2015 Equity Compensation Plan, as amended and restated. For additional information, see “Notes to Consolidated Financial Statements—Stock-Based Compensation” included in financial statements included Part IV, Item 15 of this report. Item 13. Certain Relationships and Related Transactions and Director Independence Information concerning relationships and related party transactions of certain of our executive officers, directors, and greater than 5% shareholders as well as the independence of our directors is set forth under the headings “Directors and Executive Officers” and “Certain Relationships and Related Transactions” in our Proxy Statement relating to our 2021 annual meeting of shareholders and is herein incorporated herein by reference. In addition, see “Notes to Consolidated Financial Statements—Related Party Transactions” included in Part IV, Item 15. Item 14. Principal Accountant Fees and Services Information concerning principal accountant fees and services is set forth under the heading “Principal Accounting Fees and Services” in our Proxy Statement relating to our 2021 annual meeting of shareholders and is herein incorporated by reference. PART IV Item 15. Exhibits and Financial Statement Schedules (a) 1. Our audited consolidated financial statements follow. 66 REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM To the Shareholders and the Board of Directors of First Interstate BancSystem, Inc. Opinion on the Financial Statements We have audited the accompanying consolidated balance sheets of First Interstate BancSystem, Inc. and its subsidiaries (the Company) as of December 31, 2020 and 2019, the related consolidated statements of income, comprehensive income, stockholders’ equity and cash flows for each of the three years in the period ended December 31, 2020, and the related notes to the consolidated financial statements (collectively, the financial statements). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2020 and 2019, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2020, in conformity with accounting principles generally accepted in the United States of America. We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the Company’s internal control over financial reporting as of December 31, 2020, based on criteria established in Internal Control - Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission in 2013, and our report dated February 26, 2021 expressed an unqualified opinion on the effectiveness of the Company’s internal control over financial reporting. Change in Accounting Principle As discussed in Note 27 to the financial statements, the Company has changed its method of accounting for the allowance for credit losses effective January 1, 2020 due to the adoption of Financial Accounting Standards Board (FASB) Accounting Standards Codification No. 326, Financial Instruments - Credit Losses (ASC 326). Basis for Opinion These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on the Company’s financial statements based on our audits. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB. We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion. Critical Audit Matter The critical audit matter communicated below is a matter arising from the current period audit of the financial statements that was communicated or required to be communicated to the audit committee and that: (1) relates to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective or complex judgments. The communication of the critical audit matter does not alter in any way our opinion on the financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates. Allowance for Credit Losses - Loans Held for Investment The Company’s loans held for investment portfolio totaled $9,807.5 million as of December 31, 2020 and the associated allowance for credit losses on loans held for investment was $144.3 million. As described in Notes 1 and 6 to the financial statements, the allowance for credit losses on loans held for investment is a valuation account that is deducted from the Company’s amortized cost basis of loans held for investment to present the net amount of loans held for investment expected to be collected. The Company’s allowance for credit losses on loans held for investment consists of three elements: (1) specific valuation allowances associated with collateral‑dependent loans; (2) historical valuation allowances based on loan loss experience for similar loans with similar characteristics and trends; and (3) adjustments to historical loss information for differences in current loan‑specific risk characteristics such as differences in underwriting standards, portfolio mix, delinquency level, or term as well as for changes in or forecasted changes in environmental and economic conditions, such as changes in unemployment rates, property values, or other relevant factors. 67 We identified the adjustments to historical loss information component of the allowance for credit losses on loans held for investment, both as it relates to current conditions and forecasted scenarios, as a critical audit matter, because auditing this component of the allowance for credit losses on loans held for investment required significant auditor judgement related to estimates determined by management which are highly subjective and are highly sensitive to change in significant assumptions. Our audit procedures related to the Company’s adjustments to historical loss information component of the allowance for credit losses on loans held for investment included the following, among others: • We obtained an understanding of the relevant controls related to the allowance for credit losses on loans held for investment and tested such controls for design and operating effectiveness, including controls relating to management’s review and approval of the allowance for credit losses on loans held for investment calculation, management’s assessment and review of the adjustments to historical loss information component of the allowance for credit losses on loans held for investment for current conditions and forecasted scenarios and management’s validation of underlying source data. • We tested management’s calculation of adjustments to historical loss information within the allowance for credit losses on loans held for investment calculation by agreeing calculation inputs to the Company’s internal and external source data, including for current and forecasted conditions, verifying the mathematical accuracy of the calculation of adjustments to historical loss information, and evaluating whether adjustments to historical loss information within the allowance for credit losses on loans held for investment, or lack thereof, were consistent with Company provided internal data and external independent data, including data related to current and forecasted periods. • We assessed the reasonableness of management’s calculated changes in adjustments to historical loss information within the allowance for credit losses on loans held for investment calculation by evaluating the magnitude and directional consistency of changes, or lack thereof, in the level of adjustments to historical loss information between periods and evaluating whether management’s conclusions were consistent with Company provided internal data and external independent data, including data related to current and forecasted periods. • We agreed management’s calculated adjustments to historical loss information to the allowance for credit losses on loans held for investment calculation. /s/ RSM US LLP We have served as the Company’s auditor since 2004. Des Moines, Iowa February 26, 2021 68 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES CONSOLIDATED BALANCE SHEETS (In millions, except share data) December 31, Assets Cash and due from banks Interest bearing deposits in banks Federal funds sold Total cash and cash equivalents Investment securities: Available-for-sale Held-to-maturity, net (estimated fair values of $55.0 and $94.5 at December 31, 2020 and 2019, respectively) Total investment securities Mortgage loans held for sale, at fair value Loans held for investment, net of deferred fees and costs Allowance for credit losses Net loans held for investment Goodwill Company-owned life insurance Premises and equipment, net of accumulated depreciation Core deposit intangibles, net of accumulated amortization Accrued interest receivable Mortgage servicing rights, net of accumulated amortization and impairment reserve Other real estate owned (“OREO”) Other assets Total assets Liabilities and Stockholders’ Equity Deposits: Non-interest bearing Interest bearing Total deposits Securities sold under repurchase agreements Accounts payable and accrued expenses Accrued interest payable Deferred tax liability, net Long-term debt Allowance for credit losses on off-balance sheet credit exposures Subordinated debentures held by subsidiary trusts Total liabilities Stockholders’ equity: Nonvoting noncumulative preferred stock without par value; authorized 100,000 shares; no shares issued or outstanding as of December 31, 2020 or 2019 Common stock Retained earnings Accumulated other comprehensive income, net Total stockholders’ equity Total liabilities and stockholders’ equity See accompanying notes to consolidated financial statements. 2020 2019 $ 261.4 $ 241.5 2,015.3 0.1 2,276.8 835.2 0.1 1,076.8 4,008.7 2,960.0 51.6 4,060.3 74.0 9,807.5 144.3 9,663.2 621.6 296.4 312.3 51.2 51.1 24.0 2.5 215.3 92.3 3,052.3 100.9 8,930.7 73.0 8,857.7 621.6 293.8 306.0 62.1 46.7 30.2 8.5 187.6 $ 17,648.7 $ 14,644.2 $ 4,633.5 9,583.5 14,217.0 1,091.4 144.4 5.8 27.2 112.4 3.7 87.0 15,688.9 — 941.1 962.1 56.6 1,959.8 $ 3,426.5 8,237.0 11,663.5 697.6 129.6 12.1 26.7 13.9 — 86.9 12,630.3 — 1,049.3 953.6 11.0 2,013.9 $ 17,648.7 $ 14,644.2 69 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES CONSOLIDATED STATEMENTS OF INCOME (In millions, except per share data) Year Ended December 31, Interest income: Interest and fees on loans Interest and dividends on investment securities: Taxable Exempt from federal taxes Interest on deposits in banks Total interest income Interest expense: Interest on deposits Interest on securities sold under repurchase agreements Interest on other borrowed funds Interest on long-term debt Interest on subordinated debentures held by subsidiary trusts Total interest expense Net interest income Provision for credit losses Net interest income after provision for credit losses Non-interest income: Payment services revenues Mortgage banking revenues Wealth management revenues Service charges on deposit accounts Other service charges, commissions, and fees Investment securities gains (losses), net Other income Total non-interest income Non-interest expense: Salaries and wages Employee benefits Outsourced technology services Occupancy, net Furniture and equipment OREO expense, net of income Professional fees FDIC insurance premiums Core deposit intangibles amortization Other expenses Acquisition related expenses Total non-interest expense Income before income tax expense Income tax expense Net income Basic earnings per common share Diluted earnings per common share See accompanying notes to consolidated financial statements. 70 2020 2019 2018 $ 453.4 $ 470.9 $ 404.3 63.4 2.7 4.1 523.6 18.1 0.9 — 4.6 3.0 26.6 497.0 56.9 440.1 41.1 47.3 23.8 17.6 12.1 0.3 14.5 156.7 173.7 49.4 32.8 28.5 15.5 (0.5) 10.9 5.9 10.9 60.4 — 387.5 209.3 48.1 161.2 2.53 2.53 $ $ 62.3 2.0 18.8 554.0 49.3 3.9 — 1.3 4.5 59.0 495.0 13.9 481.1 41.5 33.2 23.8 21.1 7.0 0.1 15.9 142.6 155.3 51.5 32.3 28.3 13.2 (2.2) 11.6 3.5 11.2 63.6 20.3 388.6 235.1 54.1 181.0 2.84 2.83 $ $ 55.4 2.4 11.3 473.4 32.6 2.7 0.2 1.3 4.1 40.9 432.5 8.6 423.9 43.3 29.7 23.2 21.8 5.8 (0.1) 15.1 138.8 146.4 47.9 28.7 25.4 12.7 0.3 10.5 5.6 7.9 58.6 12.4 356.4 206.3 46.1 160.2 2.77 2.75 $ $ FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (In millions) Year ended December 31, Net income Other comprehensive income (loss) before tax: Investment securities available-for-sale: Change in net unrealized gains (losses) during the period Reclassification adjustment for net (gains) losses included in income Reclassification adjustment for securities transferred from held-to-maturity to available-for-sale Change in unamortized loss on available-for-sale investment securities transferred into held-to-maturity Change in net unrealized loss on derivatives Defined benefit post-retirement benefit plans: Change in net actuarial loss Other comprehensive income (loss), before tax Deferred tax (expense) benefit related to other comprehensive income (loss) Other comprehensive income (loss), net of tax Comprehensive income, net of tax See accompanying notes to consolidated financial statements. 2020 2019 2018 $ 161.2 $ 181.0 $ 160.2 61.8 (0.3) — — 0.2 (0.5) 61.2 (15.6) 45.6 54.9 (0.1) (6.0) — — (0.8) 48.0 (12.4) 35.6 (13.9) 0.1 — 1.6 — (0.6) (12.8) 3.3 (9.5) $ 206.8 $ 216.6 $ 150.7 71 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY (In millions, except share and per share data) Common Stock Retained Earnings Accumulated Other Comprehensive Income (Loss) Total Stockholders’ Equity Balance at December 31, 2017 $ 687.0 $ 752.6 $ (12.0) $ 1,427.6 Net income Reclassification of the income tax effects of the Tax Cut and Jobs Act from AOCI Other comprehensive loss, net of tax expense Common stock transactions: 24,271 common shares purchased and retired 3,848,929 common shares issued 214,892 non-vested common shares issued 43,079 non-vested common shares forfeited or canceled 161,217 stock options exercised, net of 38,450 shares tendered in payment of option price and income tax withholding amounts Stock-based compensation expense Common cash dividends declared ($1.12 per share) — — — (1.0) 173.3 — — 1.8 5.6 — 160.2 3.1 — — — — — — — (64.1) — (3.1) (9.5) — — — — — — — 160.2 — (9.5) (1.0) 173.3 — — 1.8 5.6 (64.1) Balance at December 31, 2018 Net income Other comprehensive income, net of tax expense Common stock transactions: 43,560 common shares purchased and retired 4,356,973 common shares issued 212,587 non-vested common shares issued 46,198 non-vested common shares forfeited or canceled 143,222 stock options exercised, net of 47,971 shares tendered in payment of option price and income tax withholding amounts Stock-based compensation expense Common cash dividends declared ($1.24 per share) Balance at December 31, 2019 Cumulative change related to the adoption of ASU 2016-13 Adjusted balance at January 1, 2020 Net income Other comprehensive income, net of tax expense Common stock transactions: 3,578,743 common shares purchased and retired 19,491 common shares issued 332,085 non-vested common shares issued 34,912 non-vested common shares forfeited or canceled 111,539 stock options exercised, net of 26,124 shares tendered in payment of option price and income tax withholding amounts Stock-based compensation expense Common cash dividends declared ($2.00 per share) Balance at December 31, 2020 See accompanying notes to consolidated financial statements. 72 $ 866.7 $ 851.8 $ (24.6) $ 1,693.9 — — (2.5) 176.1 — — 1.0 8.0 — $ 1,049.3 $ — 1,049.3 — — (116.8) — — — 181.0 — — — — — — — (79.2) 953.6 $ (24.1) 929.5 161.2 — — — — — 1.1 7.5 — 941.1 $ — — (128.6) 962.1 $ $ — 35.6 — — — — — — — 11.0 $ — 11.0 — 45.6 — — — — — — — 56.6 $ 181.0 35.6 (2.5) 176.1 — — 1.0 8.0 (79.2) 2,013.9 (24.1) 1,989.8 161.2 45.6 (116.8) — — — 1.1 7.5 (128.6) 1,959.8 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES CONSOLIDATED STATEMENTS OF CASH FLOWS (In millions) Year Ended December 31, Cash flows from operating activities: Net income Adjustments to reconcile net income from operations to net cash provided by operating activities: Provision for credit losses* Net loss (gain) on disposal of property and equipment Depreciation and amortization Net premium amortization on investment securities Net (gain) loss on investment securities transactions Realized and unrealized net gains on mortgage banking activities Net gain on sale of investments in unrelated entities Net gain on sale of OREO Write-downs of OREO and other assets pending disposal Mortgage servicing rights impairment Deferred taxes Net increase in cash surrender value of company-owned life insurance policies Stock-based compensation expense Originations of mortgage loans held for sale Proceeds from sales of mortgage loans held for sale Changes in operating assets and liabilities: (Increase) decrease in interest receivable Increase in other assets (Decrease) increase in interest payable Increase (decrease) in accounts payable and accrued expenses Net cash provided by operating activities Cash flows from investing activities: Purchases of investment securities: Held-to-maturity Available-for-sale Proceeds from maturities, pay-downs, calls and sales of investment securities: Held-to-maturity Available-for-sale Proceeds from bank-owned life insurance settlements Extensions of credit to clients, net of repayments Recoveries of loans charged-off Proceeds from sales of OREO Proceeds from the sale of health savings accounts Proceeds from sale of investments in unrelated entities Acquisition of banks and bank holding companies, net of cash and cash equivalents received Capital expenditures, net of proceeds from sales Net cash used in investing activities 2020 2019 2018 $ 161.2 $ 181.0 $ 160.2 56.9 0.3 45.1 15.9 (0.3) (49.3) (1.0) (0.9) 0.1 9.9 (6.6) (7.6) 7.5 (1,404.2) 1,468.4 (4.4) (27.7) (6.3) 11.3 268.3 13.9 (1.5) 38.7 8.9 (0.1) (30.5) — (3.6) 0.9 0.4 5.4 (6.7) 8.0 (1,015.6) 971.2 0.3 (22.1) (13.5) (7.8) 127.3 8.6 (1.2) 27.6 10.0 0.1 (23.0) — (0.8) 0.1 — 15.8 (5.0) 5.6 (768.1) 798.4 (3.3) (8.0) 2.2 (0.2) 219.0 — (2,444.1) — (1,270.0) (2.0) (541.0) 40.4 1,441.4 5.0 (901.3) 6.7 10.1 — 2.2 — (30.2) (1,869.8) $ $ 35.6 978.6 3.2 (81.4) 9.7 25.4 0.3 — 298.4 (16.6) (16.8) $ 79.3 460.0 — (221.7) 12.0 9.1 — — 28.1 (4.9) (181.1) 73 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES CONSOLIDATED STATEMENTS OF CASH FLOWS (CONTINUED) (In millions) Year Ended December 31, Cash flows from financing activities: Net increase in deposits Net increase (decrease) in securities sold under repurchase agreements Net decrease in other borrowed funds Repayments of long-term debt Advances on long-term debt Proceeds from issuance of common stock Purchase and retirement of common stock Dividends paid to common stockholders Net cash provided by (used in) financing activities Net increase (decrease) in cash and cash equivalents Cash and cash equivalents at beginning of period Cash and cash equivalents at end of period Supplemental disclosures of cash flow information: Cash paid during the period for income taxes Cash paid during the period for interest expense Supplemental disclosures of noncash investing and financing activities: Amortization of unrealized gains and losses on transfers of securities Transfer of securities from held-to-maturity to available-for-sale Right-of-use assets obtained in exchange for operating lease liabilities Transfer of loans to other real estate owned Capitalization of internally originated mortgage servicing rights Supplemental schedule of noncash investing activities from acquisitions: Investment securities available for sale Loans held for sale Loans Premises and equipment Goodwill Core deposit intangible Company-owned life insurance Interest receivable Other real estate owned Other assets Total noncash assets acquired Liabilities assumed: Deposits Securities sold under repurchase agreements Accounts payable and accrued expenses Long-term debt Other borrowed funds Trust preferred securities Deferred tax liability $ $ $ $ $ $ $ Total liabilities assumed $ *Provision for credit losses for 2020; Provision for loan losses for 2019 and 2018. See accompanying notes to consolidated financial statements. 74 2020 2019 2018 2,553.5 393.8 — (0.1) 98.6 1.1 (116.8) (128.6) 2,801.5 1,200.0 1,076.8 2,276.8 54.4 32.9 — — 3.6 3.3 11.7 — — — — — — — — — — — — — — — — — — — $ $ $ $ $ $ $ $ 276.2 (45.2) (4.1) (2.0) 0.1 1.0 (2.5) (79.2) 144.3 254.8 822.0 1,076.8 51.2 54.7 — 281.1 39.6 14.1 7.3 78.7 0.5 416.6 24.6 75.3 16.6 15.2 2.2 2.4 6.5 638.6 706.7 30.4 19.9 4.1 — — 0.1 761.2 $ $ $ $ $ $ $ $ 49.5 69.4 (26.1) (7.1) 2.8 1.8 (1.0) (64.1) 25.2 63.1 758.9 822.0 25.3 38.7 1.6 — — 12.1 6.0 3.1 — 713.1 14.0 101.1 15.7 9.5 3.6 0.6 6.2 866.9 696.3 — 7.7 7.0 6.1 4.4 0.3 721.8 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) (1) SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Business. First Interstate BancSystem, Inc. (the “Parent Company” and collectively with its subsidiaries, the “Company”) is a financial and bank holding company that, through the branch offices of its bank subsidiary, provides a comprehensive range of banking products and services to individuals, businesses, municipalities, and other entities throughout Idaho, Montana, Oregon, South Dakota, Washington, and Wyoming. In addition to its primary emphasis on commercial and consumer banking services, the Company also offers trust, employee benefit, investment, and insurance services through its bank subsidiary. The Company is subject to competition from other financial institutions and nonbank financial companies, and is also subject to the regulations of various government agencies and undergoes periodic examinations by those regulatory authorities. Basis of Presentation. The Company’s consolidated financial statements include the accounts of the Parent Company and its operating subsidiaries. As of December 31, 2020, the Company had one significant subsidiary, First Interstate Bank (“FIB”). All significant intercompany balances and transactions have been eliminated in consolidation. Certain reclassifications, none of which were material, have been made in the consolidated financial statements for 2019 and 2018 to conform to the 2020 presentation. These reclassifications did not change previously reported net income or stockholders’ equity. Business Combinations. The Company accounts for all business combinations using the acquisition method of accounting. Under this method of accounting, acquired assets and assumed liabilities are included with the acquirer's accounts as of the date of acquisition, with any excess of purchase price over the fair value of the net assets acquired recognized as either finite lived intangibles or capitalized as goodwill. In addition, acquisition related costs and restructuring costs are recognized as period expenses as incurred. Fair values are subject to refinement over the measurement period, not to exceed one year after the closing date. Equity Method Investments. The Company has investments in real estate joint ventures that are not consolidated because the Company does not own a majority voting interest, control the operations or receive a majority of the losses or earnings of the joint venture. These joint ventures are accounted for using the equity method of accounting whereby the Company initially records its investment at cost (or fair value at the date of acquisition) and then subsequently adjusts the carrying value for the Company’s proportionate share of distributions and earnings or losses of the joint ventures. Variable Interest Entities. The Company’s wholly-owned business trusts, FI Statutory Trust I (“Trust I”), FI Capital Trust II (“Trust II”), FI Statutory Trust III (“Trust III”), FI Capital Trust IV (“Trust IV”), FI Statutory Trust V (“Trust V”), FI Statutory Trust VI (“Trust VI”), and Northwest Bancorporation Capital Trust I (“Trust VII”) are variable interest entities for which the Company is not a primary beneficiary. Accordingly, the accounts of Trust I, Trust II, Trust III, Trust IV, Trust V, Trust VI, and Trust VII are not included in the accompanying consolidated financial statements, and are instead accounted for using the equity method of accounting. The Company has equity investments in variable interest Certified Development Entities (“CDEs”) which have received allocations under the New Markets Tax Credits Program. The underlying activities of the CDEs are community development projects designed primarily to promote community welfare, such as economic rehabilitation and development of low-income areas by providing housing, services, or jobs for residents. The maximum exposure to loss in the CDEs is the amount of equity invested and credit extended by the Company. The Company has credit protection in the form of indemnification agreements, guarantees, and collateral arrangements. As the primary beneficiary of these variable interest entities, the Company’s consolidated financial statements include the assets, liabilities, and results of operations of the CDEs. The primary activities of the CDEs are recognized in interest and fees on loans, other non-interest income and long-term debt interest expense on the Company’s statements of operations. Related cash flows are recognized in loans originated, principal collected on loans and advances or repayments of long-term debt. Assets Held in Fiduciary or Agency Capacity. The Company holds certain trust assets in a fiduciary or agency capacity. The Company also purchases and sells federal funds as an agent. These and other assets held in an agency or fiduciary capacity are not assets of the Company and, accordingly, are not included in the accompanying consolidated financial statements. 75 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) Use of Estimates. The preparation of consolidated financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements and income and expenses during the reporting period. Actual results could differ from those estimates. Material estimates that are particularly susceptible to change relate to the determination of the allowance for credit losses, the valuation of goodwill, fair valuations of investment securities and other financial instruments, and the status of loss contingencies. Cash and Cash Equivalents. For purposes of reporting cash flows, cash and cash equivalents include cash on hand, amounts due from banks, federal funds sold for one-day periods, and interest-bearing deposits in banks with original maturities of less than three months. As of December 31, 2020 and 2019, the Company had cash of $1,989.3 million and $769.3 million, respectively, on deposit with the Federal Reserve Bank. In addition, the Company maintained compensating balances with the Federal Reserve Bank of approximately zero and $46.3 million as of December 31, 2020 and 2019, respectively, to reduce service charges for check clearing services. Debt Security Investments. Investments in debt securities that the Company has the positive intent and ability to hold to maturity are classified as held-to-maturity and carried at amortized cost. Investments in debt securities that may be sold in response to or in anticipation of changes in interest rates and resulting prepayment risk, or other factors, are classified as available-for-sale and carried at fair value. The unrealized gains and losses on these securities are reported, net of applicable income taxes, as a separate component of stockholders’ equity and comprehensive income. Management determines the appropriate classification of securities at the time of purchase and at each reporting date management reassesses the appropriateness of the classification. The amortized cost of debt securities classified as held-to-maturity or available-for-sale is adjusted for accretion of discounts to maturity and amortization of premiums over the estimated average life of the security, without anticipating prepayments, except for mortgage-backed securities where prepayments are anticipated, or in the case of callable securities, through the first call date, using the effective yield method. Such amortization and accretion is included in interest income. Realized gains and losses on sales are recorded on the trade date in investment securities gains and losses and determined using the specific identification method. Accrued interest receivable on investment securities totaled $12.6 million and $9.8 million at December 31, 2020 and 2019, respectively, and was reported in the accrued interest receivable line item on the consolidated balance sheets. Allowance for Credit Losses - Held-to-Maturity Securities: Management measures expected credit losses on held-to- maturity debt securities on a collective basis by major security type. Accrued interest receivable on held-to-maturity debt securities is excluded from the estimate of credit losses. The estimate of expected credit losses considers historical credit loss information that is adjusted for current conditions and reasonable and supportable forecasts. Management classifies the held-to-maturity portfolio into the following major security types: State, county, and municipal securities. Municipal bonds issued by municipal governments within the U.S. These types of securities are primarily composed of general obligation bonds, or municipal bonds backed by the credit and taxing power of the issuing jurisdiction and revenue obligation bonds, or municipal bonds that are financed by income-producing projects and are secured by a specified source of revenue. Municipal issues shall have at least an "A-" rating by Moody's and/or Standard and Poor’s, or equivalent creditworthiness must be established prior to purchase. All non-rated or private placement securities must be analyzed and approved by the Company’s Credit Department and documented prior to purchase. Obligations of U.S. government agencies and entities. Securities held by the Company are primarily issued by The Federal Home Loan Mortgage Corporation, known as Freddie Mac, and The Federal National Mortgage Association, Fannie Mae, which are implicitly guaranteed by the U.S. government and are consistently highly rated by major rating agencies with very little risk to default. 76 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) U.S. agency residential mortgage backed securities and Collateralized Mortgage Obligations. Residential mortgage backed securities held by the Company are primarily issued by U.S. government agencies and entities. These securities are either explicitly or implicitly guaranteed by the U.S. government, are consistently highly rated by major rating agencies with very little risk to default. Collateralized mortgage obligations include agency and non- agency residential securities which currently carry ratings no lower than investment grade “BBB-” and pass the federal financial institutions examinations test (Collateral Mortgage Obligation volatility test) at the time of purchase. Corporate securities. Securities held by the Company are primarily comprised of corporate bonds (both senior and subordinated-debt) issued by a firm or public entity which currently carry ratings no lower than investment grade “BBB-” or better by Moody’, Standard and Poor’s, or Kroll rating agencies. All corporate subordinated-debt securities are analyzed and approved by the Company prior to purchase. Allowance for Credit Losses - Available-For-Sale Securities: For available-for-sale debt securities in an unrealized loss position, the Company first assesses whether it intends to sell, or it is more likely than not that it will be required to sell the security before recovery of its amortized cost basis. If either of the criteria regarding intent or requirement to sell is met, the security's amortized cost basis is written down to fair value through income. For available-for-sale debt securities that do not meet the aforementioned criteria, the Company performs a qualitative assessment as to whether the decline in fair value has resulted from credit losses or other factors. In making this assessment, management considers the extent to which fair value is less than amortized cost, any changes to the rating of the security by a rating agency, and adverse conditions specifically related to the security, among other factors. If this assessment indicates that a credit loss exists, the present value of cash flows expected to be collected from the security are compared to the amortized cost basis of the security. If the present value of cash flows expected to be collected is less than the amortized cost basis, a credit loss exists and an allowance for credit losses is recorded for the credit loss, limited by the amount that the fair value is less than the amortized cost basis. Any impairment that has not been recorded through an allowance for credit losses is recognized in other comprehensive income. Changes in the allowance for credit losses are recorded as provision for (or reversal of) credit loss expense. Losses are charged against the allowance when management believes the uncollectibility of an available-for-sale security is confirmed or when either of the criteria regarding intent or requirement to sell is met. Accrued interest receivable on available-for-sale debt securities is excluded from the estimate of credit losses. Loans Held for Sale. Residential loans the Company originated with the intent to sell are classified as loans held for sale and recorded at fair value, determined individually, as of the balance sheet date. The loan’s fair value includes the servicing value of the loans as well as any accrued interest. Loans Held for Investment. Loans that management has the intent and ability to hold for the foreseeable future or until maturity or payoff are reported at amortized cost or principal balance outstanding. Amortized cost is the principal balance outstanding, net of purchase premiums and discounts and deferred loan fees and costs. Loan origination fees, net of certain direct origination costs, are deferred and recognized in interest income using the level-yield method without anticipating prepayments. Accrued interest receivable on loans held for investment totaled $37.9 million and $36.9 million at December 31, 2020 and 2019, respectively, and was reported in the accrued interest receivable line item on the consolidated balance sheets. Interest income is accrued on the unpaid principal balance of underlying loans. Interest income on mortgage and commercial loans is discontinued and placed on nonaccrual status at the time the loan is 90 days delinquent unless the loan is well secured and in process of collection. Mortgage loans that are 180 days past due and commercial loans are charged off to the extent principal or interest is deemed uncollectible. Consumer and credit card loans continue to accrue interest until they are charged off no later than 120 days past due unless the loan is in the process of collection. Past-due status is based on the contractual terms of the loan. In all cases, loans are placed on nonaccrual or charged off at an earlier date if collection of principal or interest is considered doubtful. 77 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) All interest accrued but not received for loans placed on nonaccrual is reversed against interest income. Interest received on such loans is accounted for on the cash-basis or cost-recovery method, until qualifying for return to accrual. Under the cost-recovery method, interest income is not recognized until the loan balance is reduced to zero. Under the cash-basis method, interest income is recorded when the payment is received in cash. Loans are returned to accrual status when all the principal and interest amounts contractually due are brought current and when, in the opinion of management, the loans are estimated to be fully collectible as to both principal and interest. Purchased Credit Deteriorated (“PCD”) Loans The Company has purchased loans, some of which have experienced more than insignificant credit deterioration since origination. Loans that meet at least one of the following criteria are considered to have experienced more- than-insignificant credit deterioration since origination at the date of acquisition: 1) delinquent as of the acquisition date; 2) has been downgraded since origination; 3) has been placed on nonaccrual status at any point since origination; or 4) for which credit spreads have widened beyond market-level thresholds. PCD loans are recorded at the amount paid for the loan. An allowance for credit losses is determined using the same methodology as other loans held for investment. The initial allowance for credit losses determined on a collective basis is allocated to individual loans. The sum of the loan’s purchase price and allowance for credit losses becomes its initial amortized cost basis. The difference between the initial amortized cost basis and the par value of the loan is a noncredit discount or premium, which is amortized into interest income over the life of the loan. Subsequent changes to the allowance for credit losses are recorded through provision expense. Allowance for Credit Losses - Loans held for investment The allowance for credit losses is a valuation account that is deducted from the loans’ amortized cost basis to present the net amount expected to be collected on the loans. Loans are charged off against the allowance when management believes the uncollectibility of a loan balance is confirmed. When forecasting expected recoveries, the amounts should not exceed the aggregate of amounts that have previously been or are expected to be charged-off loans. The Company has elected to not forecast recoveries. Management estimates the allowance balance using relevant available information, from internal and external sources, relating to past events, current conditions, and reasonable and supportable forecasts. Historical credit loss experience provides the basis for the estimation of expected credit losses. Adjustments to historical loss information are made for differences in current loan-specific risk characteristics such as differences in underwriting standards, portfolio mix, delinquency level, or term as well as for changes in environmental and economic conditions, such as changes in unemployment rates, property values, or other relevant factors. The allowance for credit losses is measured on a collective (pool) basis when similar risk characteristics exist. The Company applies Probability of Default (PD), and Loss Given Default (LGD), methodologies for all portfolio segments. The Company uses a Transition Matrix (TM) for PD components of the methodology and a historical average for the LGD components of methodology. The PD and LGD is applied to the current principal balance as of the reporting date. The TM determines the PD by tracking the historical movement of loans between loan risk tiers over a defined period of time. The Company currently has 16 portfolio segments for which we track monthly movement between either risk ratings, or delinquency date count, or delinquency band. While the TM functions similarly across all portfolio segments, generally speaking, commercial portfolios use the Company’s risk rating scale and consumer portfolios use the delinquency band. Loans using risk ratings are scored utilizing the Company’s risk rating scale. The risk rating scale is 1-10, with 1 being the best rating, 6 being a pass but on watch, and 7-10 being various stages of criticized loans. Risk ratings 8 or greater and in a non-accrual status are considered in a defaulted state. Loans using delinquency band are measured using a 5-grade band, with 1 being current and 5 being 90 or more days past due. The LGD used as the basis for the estimate of credit losses is comprised of the Company’s historical loss experience from 2008 to the current period, based on a migration analysis of our historical loss experience, designed to account for credit deterioration. The model compares the most recent period losses to prior period defaults to calculate the LGD, which is averaged over the historical observations. 78 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) Economic scenarios and forecasts along with current portfolio conditions and trends are monitored and accounted for through the Company’s qualitative framework. The Company utilizes a one-year forecast period with immediate reversion to historical loss rates. The Company segments the loan portfolio into pools based on the following risk characteristics: financial asset type, collateral type, loan characteristics, credit characteristics, outstanding loan balances, contractual terms and prepayment assumptions, vintage, industry of borrower and concentrations, and historical or expected credit loss. The Company has identified the following portfolio segments and measures the allowance for credit losses using the following methods: Portfolio segments using the Company’s risk ratings include the following: Commercial real estate non-owner-occupied loans. These loans include a mix of variable and fixed rate non-farm, non-residential real estate loans secured by non-owner-occupied properties. Commercial real estate non-owner- occupied loans are generally secured by first liens on income-producing real estate and generally mature in less than 10 years. Commercial real estate owner-occupied loans. Non-farm, non-residential real estate loans are generally secured by first liens on real estate where the owner occupant is the majority tenant of the property and generally mature in less than 10 years. Construction land acquisition and development loans. Construction land acquisition and development loans are primarily to commercial builders for residential lot development and the construction of single-family residences and commercial real estate properties. Construction loans are generally underwritten pursuant to pre-approved permanent financing. During the construction phase the borrower pays interest only. Construction land acquisition and development loans generally mature in three years or less. Residential construction loans. Residential construction loans are primarily to commercial builders or owner occupants for the construction of single-family residences. Construction loans are generally underwritten pursuant to credit worthiness or pre-qualification for permanent financing. During the construction phase the borrower pays interest only. Residential construction loans generally mature in one to two years. Commercial construction loans. Commercial construction loans are primarily to commercial builders for commercial real estate properties. Construction loans are generally underwritten pursuant to credit worthiness or pre-qualification for permanent financing. During the construction phase the borrower pays interest only. Commercial construction loans generally mature in two years or less. Agricultural real estate loans. These include loans secured by farmland or ranchland consisting of short, intermediate, and long-term structures to experienced agriculturalists who have demonstrated management capabilities, established production and historical financial performance. Agricultural real estate loans generally mature in ten years or less. Commercial and floor plan loans. The Company provides a mix of variable and fixed rate commercial loans in addition to loans to finance dealership floor inventories. The loans are typically made to small and medium-sized manufacturing, wholesale, retail, and service businesses for working capital needs and business expansions. Commercial loans generally include lines of credit, business credit cards, and loans with maturities of five years or less and outstanding balances tend to be cyclical in nature. The loans are generally made with business operations as the primary source of repayment, and are typically collateralized by inventory, accounts receivable, equipment, and/ or personal guarantees. Commercial and floor plan loans generally mature in seven years or less. Commercial purpose secured by 1-4 family loans. These include loans for commercial purposes secured by 1-4 family residential property. Commercial purpose loans secured by 1-4 family generally mature in seven years or less. Agricultural loans. Agricultural loans generally consist of short and medium-term loans and lines of credit that are primarily used for crops, livestock, equipment, and general operations. Agricultural loans are ordinarily secured by assets such as livestock or equipment and are repaid from the operations of the farm or ranch. Agricultural loans generally have maturities of seven years or less, with operating lines for one production season. 79 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) Portfolio segments utilizing the delinquency bands include the following: Consumer indirect loans. These include loan contracts advanced for the purchase of automobiles, boats, and other consumer goods from the consumer product dealer networks within the market areas we serve. Indirect dealer loans are generally secured by automobiles, recreational vehicles, boats, and other types of personal property and are made on an installment basis. Consumer indirect line loans generally mature in seven years or less. Consumer direct and advance line loans. These loans are originated for a variety of purposes including the purchase of automobiles, boats and other consumer goods, home improvements, medical expenses, vehicle repairs, debt consolidation, and planned expenses. Consumer direct and advance line loans generally mature in seven years or less. Consumer credit card loans. These are lines of credit offered to clients in our market areas that are generally floating rate loans and include both unsecured and secured lines. Consumer credit card loans generally do not have stated maturities but are reviewed periodically and are unconditionally cancellable. Consumer home equity and home equity lines of credit (“HELOC”). These include home equity loans and lines of credit that are secured by residential property. Consumer home equity loans generally mature in 15 years or less and HELOC loans generally mature in 25 years or less. Residential 1-4 family and multi-family lending. These are loans to finance the purchase or refinance of residential property which are typically secured by first liens, inclusive of 1-4 family as well as 5+ residential properties. Residential 1-4 family loans generally mature within 15 years but can be up to 30 years. Multi-family loans generally mature in 10 years or less. Commercial real estate multi-family loans. Commercial real estate multi-family loans are generally secured by first liens on income-producing rental real estate consisting of 5 or more residential dwelling units and generally mature in less than 10 years. For CECL related segmentation, multi-family loans are modeled with residential 1-4 family but are reported under Commercial Real Estate. Commercial credit card loans. These are lines of credit for commercial purposes that are generally floating rate loans and include both unsecured and secured lines. For CECL related segmentation, commercial credit card loans are modeled separately but are reported under Commercial. Commercial credit card loans generally do not have stated maturities but are reviewed periodically and are unconditionally cancellable. Agricultural credit card loans. Lines of credit for agricultural purposes that are generally floating rate loans and are unsecured or secured. For CECL related segmentation, agricultural credit card loans are modeled separately but are reported under Commercial. Agricultural credit card loans generally do not have stated maturities but are reviewed periodically and are unconditionally cancellable. Contractual Term. Expected credit losses are estimated over the contractual term of the loans, adjusted for expected prepayments when appropriate. The contractual term excludes expected extensions, renewals, and modifications unless either management has a reasonable expectation at the reporting date that a troubled debt restructuring will be executed with an individual borrower or the extension or renewal options are included in the original or modified contract at the reporting date and are not unconditionally cancellable by the Company. A loan for which the terms have been modified resulting in a concession, and for which the borrower is experiencing financial difficulties, is considered to be a troubled debt restructuring. The allowance for credit loss on a troubled debt restructuring is measured using the same method as all other loans held for investment, except when the value of a concession cannot be measured using a method other than the discounted cash flow method. When the value of a concession is measured using the discounted cash flow method, the allowance for credit loss is determined by discounting the expected future cash flows at the original interest rate of the loan. Allowance for Credit Losses on Off-Balance Sheet Credit Exposures. The Company estimates expected credit losses over the contractual period in which the Company is exposed to credit risk via a contractual obligation to extend credit unless that obligation is unconditionally cancellable by the Company. Management considers our unused credit card lines and federal fund lines, extended to others, to be considered unconditionally cancellable. 80 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) Credit card receivables are run through the transition matrices and their unused lines are excluded from the final loss calculation because they are unconditionally cancellable. The allowance for credit losses on off-balance sheet credit exposures is adjusted as a provision for credit loss expense. The estimate considers the likelihood that funding will occur and an estimate of expected credit losses on commitments expected to be funded over the estimated life. The Company has identified commitments to extend credit and standby letters of credit determined not to be unconditionally cancellable as categories with off-balance sheet credit exposures and uses the commitment balance, expected loss rate, and utilization rate as primary assumptions to develop the allowance for credit losses on those exposures. The loss rate expectation is the same for both the unfunded and funded portions of the credit exposure. The utilization rate represents management’s best estimate of the probability that the unfunded portion of the commitment will be funded given existing economic conditions. Goodwill. The excess purchase price over the fair value of net assets from acquisitions, or goodwill, is evaluated for impairment at least annually and on an interim basis if an event or circumstance indicates that it is likely impairment has occurred. Goodwill impairment is determined by comparing the fair value of a reporting unit to its carrying amount. In any given year the Company may elect to perform a qualitative assessment to determine whether it is more likely than not that the fair value of a reporting unit is in excess of its carrying value. If it is not more likely than not that the fair value of the reporting unit is in excess of the carrying value, or if the Company elects to bypass the qualitative assessment, a quantitative impairment test is performed. In performing a quantitative test for impairment, the fair value of net assets is estimated based on analyses of the Company’s market value, discounted cash flows and peer values. The determination of goodwill impairment is sensitive to market-based economics and other key assumptions used in determining or allocating fair value. Variability in the market and changes in assumptions or subjective measurements used to allocate fair value are reasonably possible and may have a material impact on our consolidated financial statements or results of operations. Core Deposit Intangibles. Core deposit intangibles represent the intangible value of depositor relationships resulting from deposit liabilities assumed, as a result of acquisitions, and are amortized using an accelerated method based on the estimated weighted average useful lives of the related deposits, which is generally ten years. Mortgage Servicing Rights. The Company recognizes the rights to service mortgage loans for others, whether acquired or internally originated. Mortgage servicing rights are initially recorded at fair value based on comparable market data and are amortized in proportion to and over the period of estimated net servicing income. Mortgage servicing rights are evaluated quarterly for impairment by discounting the expected future cash flows, taking into consideration the estimated level of prepayments based on current industry expectations and the predominant risk characteristics of the underlying loans including loan type, note rate and loan term. Impairment adjustments, if any, are recorded through a valuation allowance. Premises and Equipment. Buildings, furniture, and equipment are stated at cost less accumulated depreciation. Depreciation expense is computed using straight-line methods over estimated useful lives of 5 to 45 years for buildings and improvements and 3 to 15 years for furniture and equipment. Leasehold improvements and assets acquired under a financing lease are amortized over the shorter of their estimated useful lives or the terms of the related leases. Land is recorded at cost. Costs incurred for maintenance and repairs are expensed as incurred. We have leased branches and office space and have entered into various other agreements in conducting our business. Operating lease right-of-use assets are included within the Premises and Equipment line item and our operating lease liability is included within the Other Liabilities line item. Operating lease expense is recognized on a straight-line basis over the lease term, subject to any changes in the lease or expectations regarding the terms. Variable lease costs such as property taxes are expensed as incurred. Lease and non-lease components are accounted for separately as the amounts are readily determinable under our lease contracts. Leases with an initial term of 12 months or less are not recorded on the balance sheet. Upon adoption of ASU 2016-02, the Company elected to apply certain practical expedients whereby we did not reassess (i) whether any expired or existing contracts are or contain leases, (ii) the lease classification for any expired or existing leases, and (iii) initial direct costs for any existing leases. We elected the hindsight practical expedient to determine the lease term for existing leases. 81 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) In recognizing lease right-of use assets and related lease liabilities, we determine whether an agreement represents a lease and at commencement of the lease we evaluate each agreement to determine whether the lease is an operating or financing lease. Some of our lease agreements have contained renewal options, tenant improvement allowances, rent holidays, and rent escalation clauses. We hold one financing lease with the remaining leases classified as operating leases. Right-of-use lease assets represent our right to use the underlying asset for the lease term and the lease obligation represents our commitment to make the lease payments arising from the lease. Right-of-use lease assets and obligations are recognized at the commencement date based on the present value of remaining lease payments over the lease term. For the Company’s leases that do not provide an implicit rate, we use an estimated incremental borrowing rate based on the information available at the commencement date in determining the present value of lease payments. The right-of-use lease asset includes any lease payments made prior to commencement and excludes any lease incentives. The estimated lease term may include options to extend or terminate the lease when it is reasonably certain that we will exercise that option. Company-Owned Life Insurance. Key executive and group life insurance policies are recorded at their cash surrender value. Separate account group life insurance policies are subject to a stable value contract that offsets the impact of interest rate fluctuations on the market value of the policies and are recorded at the stabilized investment value. Increases in the cash surrender or stabilized investment value of insurance policies, as well as insurance proceeds received, are recorded as other non-interest income, and are not subject to income taxes. Deferred Compensation Plan. The Company has a deferred compensation plan for the benefit of certain highly compensated officers and directors of the Company. The plan allows for discretionary employer contributions in excess of tax limits applicable to the Company’s 401(k) plan and the deferral of salary, short-term incentives, or director fees subject to certain limitations. Deferred compensation plan assets and liabilities are included in the Company’s consolidated balance sheets at fair value. As of December 31, 2020 and 2019, deferred compensation plan assets were $19.1 million and $18.2 million, respectively. Corresponding deferred compensation plan liabilities were $19.1 million and $18.2 million as of December 31, 2020 and 2019, respectively. Impairment of Long-Lived Assets. Long-lived assets, including premises and equipment and certain identifiable intangibles, are reviewed for impairment whenever events or changes in circumstances indicate the carrying amount of an asset may not be recoverable. The amount of the impairment loss, if any, is based on the asset’s fair value. No impairment losses were recognized in 2020, 2019, or 2018. Other Real Estate Owned. Real estate acquired in satisfaction of loans is initially carried at current fair value less estimated selling costs. Any excess of loan carrying value over the fair value of the real estate acquired is recorded as a charge to the allowance for credit losses. Subsequent declines in fair value less estimated selling costs are included in OREO expense. Subsequent increases in fair value less estimated selling costs are recorded as a reduction in OREO expense to the extent of recognized losses. Operating expenses, net of related income, and gains or losses on sales are included in OREO expense. Restricted Equity Securities. The Company, as a member of the Federal Reserve Bank and the Federal Home Loan Bank (“FHLB”), is required to maintain investments in each of the organization’s capital stock. As of December 31, 2020, restricted equity securities of the Federal Reserve Bank and the FHLB of $42.8 million and $10.6 million, respectively, were included in other assets at cost. As of December 31, 2019, restricted equity securities of the Federal Reserve Bank and the FHLB were $42.8 million and $10.7 million, respectively. No ready market exists for these restricted equity securities, and they have no quoted market values. Restricted equity securities are periodically reviewed for impairment based on ultimate recovery of par value. The determination of whether a decline affects the ultimate recovery of par value is influenced by the significance of the decline compared to the cost basis of the restricted equity securities, length of time a decline has persisted, impact of legislative and regulatory changes on the issuing organizations, and the liquidity positions of the issuing organizations. Based on management’s assessment, no impairment losses were recorded on restricted equity securities during 2020, 2019, or 2018. 82 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) Derivatives and Hedging Activities. For asset and liability management purposes, the Company enters into interest rate swap contracts to hedge against changes in forecasted cash flows due to interest rate exposures. Interest rate swaps are contracts in which a series of interest payments are exchanged over a prescribed period. The notional amount upon which the interest payments are based is not exchanged. The Company formally assesses, both at the hedge's inception and on an ongoing basis, whether the derivatives that are used in hedging transactions are highly effective in offsetting changes in cash flows of hedged items. The swap agreements are derivative instruments and convert a portion of the Company’s forecasted variable rate debt to a fixed rate (i.e., cash flow hedge) over the payment term of the interest rate swap. The gain or loss on cash flow hedging instruments is initially reported as a component of other comprehensive income and subsequently reclassified into earnings in the same period during which the transaction affects earnings. When it is determined that a derivative is not highly effective as a hedge or that it has ceased to be a highly effective hedge, the Company discontinues hedge accounting prospectively when (a) it is determined that the derivative is no longer effective in offsetting changes in the cash flows of a hedged item (including forecasted transactions); (b) the derivative expires or is sold, terminated, or exercised; (c) the derivative is dedesignated as a hedge instrument, because it is unlikely that a forecasted transaction will occur; or (d) management determines that designation of the derivative as a hedge instrument is no longer appropriate. When hedge accounting is discontinued because it is probable that a forecasted transaction will not occur, the derivative will continue to be carried on the balance sheet at its fair value, and gains and losses that were accumulated in other comprehensive income will be recognized immediately in earnings. In all other situations in which hedge accounting is discontinued, the derivative will be carried at its fair value on the balance sheet, with subsequent changes in its fair value recognized in current-period earnings. The Company also enters into certain interest rate swap contracts that are not designated as hedging instruments. These derivative contracts relate to transactions in which the Company enters into an interest rate swap with a client while at the same time entering into an offsetting interest rate swap with a third-party financial institution. Because the Company acts as an intermediary for the client, changes in the fair value of the underlying derivative contracts for the most part offset each other and do not significantly impact the Company’s results of operations. In the normal course of business, the Company enters into interest rate lock commitments to finance residential mortgage loans that are not designated as accounting hedges. These commitments, which contain fixed expiration dates, offer the borrower an interest rate guarantee provided the loan meets underwriting guidelines and closes within the timeframe established by the Company. Interest rate risk arises on these commitments and subsequently closed loans if interest rates change between the time of the interest rate lock and the delivery of the loan to the investor. Loan commitments related to residential mortgage loans intended to be sold are considered derivatives and are marked to market through earnings. In addition to the effects of the change in market interest rate, the fair value measurement of the derivative also contemplates the expected cash flows to be received from the counterparty from the future sale of the loan. The Company sells residential mortgage loans on either a best efforts or mandatory delivery basis. The Company mitigates the effect of the interest rate risk inherent in providing interest rate lock commitments by entering into forward loan sales contracts. During the interest rate lock commitment period, these forward loan sales contracts are marked to market through earnings and are not designated as accounting hedges. Exclusive of the fair value component associated with the projected cash flows from the loan delivery to the investor, the changes in fair value related to movements in market rates of the interest rate lock commitments and the forward loan sales contracts generally move in opposite directions, and the net impact of changes in these valuations on net income during the loan commitment period is generally inconsequential. When the loan is funded to the borrower, the interest rate lock commitment derivative expires and the Company records a loan held for sale. The forward loan sales contract acts as a hedge against the variability in cash to be received from the loan sale. The changes in measurement of the estimated fair values of the interest rate lock commitments and forward loan sales contracts are included in mortgage banking revenues in the accompanying consolidated statements of income. 83 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) Software. Capitalized software, stated at cost less accumulated amortization, includes purchased software, capitalizable application development costs associated with internally developed software, and cloud computing arrangements, including capitalizable implementation costs associated with hosting arrangements that are service contracts. Capitalized software is included in premises and equipment, net of accumulated depreciation on the Consolidated Balance Sheets. Amortization expense, generally computed on the straight-line method, is charged to furniture and equipment in the Consolidated Statements of Income over the estimated useful life of the software, generally three to five years, or the term of the hosting arrangement for implementation costs related to service contracts. Cloud computing arrangements include software as a service (SaaS), platform as a service (PaaS), infrastructure as a service (IaaS) and other similar hosting arrangements. The Company primarily utilizes SaaS and PaaS arrangements. Capitalized implementation costs of hosting arrangements that are service contracts were $6.0 million and $9.2 million at December 31, 2020 and 2019, respectively. Earnings Per Common Share. Basic and diluted earnings per common share are calculated using a two-class method. Under the two-class method, basic earnings per common share is calculated by dividing net income available to common shareholders by the weighted average number of common shares outstanding during the period, excluding outstanding participating securities. Participating securities include non-vested performance restricted stock awards granted and all non-vested time restricted stock awards. Diluted earnings per common share is calculated by dividing net income available to common shareholders by the weighted average number of common shares outstanding determined for the basic earnings per share calculation plus the dilutive effect of stock compensation using the treasury stock method. Income Taxes. The Parent Company and its subsidiaries have elected to be included in a consolidated federal income tax return. For state income tax purposes, the combined taxable income of the Parent Company and its subsidiaries is apportioned among the states in which operations take place. Federal and state income taxes attributable to the subsidiaries, computed on a separate return basis, are paid to or received from the Parent Company. The Company accounts for income taxes using the liability method. Under the liability method, deferred tax assets and liabilities are determined based on enacted income tax rates which will be in effect when the differences between the financial statement carrying values and tax bases of existing assets and liabilities are expected to be reported in taxable income. Positions taken in the Company’s tax returns may be subject to challenge by the taxing authorities upon examination. Uncertain tax positions are initially recognized in the financial statements when it is more likely than not the position will be sustained upon examination by the tax authorities. Such tax positions are both initially and subsequently measured as the largest amount of tax benefit that is greater than 50% likely of being realized upon settlement with the tax authority, assuming full knowledge of the position and all relevant facts. The Company provides for interest and, in some cases, penalties on tax positions that may be challenged by the taxing authorities. Interest expense is recognized beginning in the first period that such interest would begin accruing. Penalties are recognized in the period that the Company claims the position in the tax return. Interest and penalties on income tax uncertainties are classified within income tax expense in the consolidated statements of income. With few exceptions, the Company is no longer subject to U.S. federal and state examinations by tax authorities for years before 2017. The Company had no material penalties as of December 31, 2020, 2019, or 2018. Revenue Recognition. The Company recognizes revenue as it is earned based on contractual terms, as transactions occur, or as services are provided and collectability is reasonably assured. The principal source of revenue is interest income from loans and investments. The Company also earns non-interest income from various banking and financial services offered to its clients. Certain specific policies related to non-interest income include the following: 84 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) Wealth management and trust fee income Wealth management and trust fee income represents monthly fees due from wealth management clients as consideration for managing the clients’ assets. Wealth management and trust services include custody of assets, investment management, fees for trust services and similar fiduciary activities. Revenue is recognized when our performance obligation is completed. The Company does not earn performance-based incentives. Optional services such as settlement, court, and regulatory fees are also available to existing trust and asset management clients. The Company’s performance obligation for these transactional-based services is generally satisfied, and related revenue recognized, at a point in time. Service charges on deposit accounts Service charges on deposit accounts represent general service fees for account maintenance and activity- or transaction-based fees and consist of transaction-based revenue, time-based revenue (service period), item-based revenue or some other individual attribute-based revenue. Revenue is recognized when our performance obligation is completed for account maintenance services or when a transaction has been completed (such as a wire transfer or check orders). Payment for such performance obligations are generally received at a point in time when the performance obligations are satisfied. Interchange and other fees Interchange and other fees primarily represent debit and credit card income comprised of interchange fees earned whenever the Company’s debit and credit cards are processed through card payment networks such as MasterCard. ATM fees are primarily generated when a Company cardholder uses a non-Company ATM or a non-Company cardholder uses a Company ATM. Merchant services income primarily represents fees charged to merchants to process their debit and credit card transactions, in addition to account management fees. Swap fee income primarily represents income associated with the execution of dealer bank swap agreements. Other service charges include revenue from processing wire transfers, bill pay service, cashier’s checks, and other services. The Company’s performance obligation for interchange and other service charges are largely satisfied, and related revenue recognized, when completion of the services are rendered at a point in time. Annuity and insurance commissions Annuity and insurance commissions primarily represent commissions received on annuity product sales. The Company acts as an intermediary between the Company’s client and the insurance carrier. The Company’s performance obligation is generally satisfied upon the issuance of the annuity policy, the carrier then remits the commission payment to the Company, and the Company recognizes the revenue at a point in time. Comprehensive Income. Comprehensive income includes net income, as well as other changes in stockholders’ equity that result from transactions and economic events other than those with shareholders. In addition to net income, the Company’s comprehensive income includes the after tax effect of changes in unrealized gains and losses on available-for-sale investment securities and derivatives designated as cash flow hedges, changes in the unamortized gain or loss on available-for-sale investment securities transferred to held-to-maturity and changes in net actuarial gains and losses on defined benefit post-retirement benefits plans. Segment Reporting. An operating segment is defined as a component of a business for which separate financial information is available that is evaluated regularly by the chief operating decision maker in deciding how to allocate resources and evaluate performance. The "Segment Reporting" topic of the FASB ASC requires that public companies report certain information about operating segments. It also requires that public companies report certain information about their products and services, the geographic areas in which they operate, and their major clients. The Company is a holding company for a regional community bank, which offers a wide array of products and services to its clients. The Company has one reporting unit and one operating segment, community banking, which encompasses commercial and consumer banking services offered to individuals, businesses, municipalities and other entities. Advertising Costs. Advertising costs are expensed as incurred. Advertising expense was $2.8 million, $4.2 million, and $3.2 million in 2020, 2019, and 2018, respectively. 85 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) Transfers of Financial Assets. Transfers of financial assets are accounted for as sales when control over the assets has been surrendered. Control over transferred assets is deemed to be surrendered when the assets have been isolated from the Company; the transferee obtains the right, free of conditions that constrain it from taking advantage of that right, to pledge or exchange the transferred assets; and, the Company does not maintain effective control over the transferred assets through an agreement to repurchase them before their maturity. Stock-Based Compensation. Compensation cost for all stock-based awards is measured at fair value on the date of grant and is recognized over the requisite service period for awards expected to vest. The impact of forfeitures of stock-based payment awards on compensation expense is recognized as forfeitures occur. Stock-based compensation expense of $7.5 million, $8.0 million, and $5.6 million for the years ended December 31, 2020, 2019, and 2018, respectively, is included in benefits expense in the Company’s consolidated statements of income. Related income tax benefits recognized for the years ended December 31, 2020, 2019, and 2018 were $0.4 million, $1.2 million, and $1.1 million, respectively, is included in income tax expense in the Company’s consolidated statements of income. Fair Value Measurements. In general, fair value measurements are based upon quoted market prices, where available. If quoted market prices are not available, fair value measurements are estimated using relevant market information and other assumptions. Fair value estimates involve uncertainties and require some degree of judgment regarding interest rates, credit risk, prepayments and other factors. The use of different assumptions or estimation techniques may have a significant effect on the fair value amounts reported. (2) ACQUISITIONS Community 1st Bank. On October 11, 2018, the Company entered into a definitive agreement to acquire all the outstanding stock of CMYF, a community bank headquartered in Post Falls, Idaho with three banking offices in North Idaho. The acquisition was completed on April 8, 2019, and conversion of the data processing systems occurred on June 7, 2019. Consideration for the acquisition was $18.8 million, consisting of the issuance of 463,134 shares of the Company’s Class A common stock valued at $40.64 per share, the closing price of the Company’s Class A common stock as quoted on the NASDAQ stock market on the acquisition date. Holders of each share of CMYF common stock received 0.3784 shares of First Interstate Class A common stock for each share of CMYF common stock. Previously unvested CMYF restricted stock awards outstanding immediately prior to the close of the transaction vested and were considered issued and outstanding at acquisition close and included in consideration. All CMYF stock options outstanding vested and were settled by CMYF prior to the close of the transaction. The assets and liabilities of CMYF were recorded in the Company’s consolidated financial statements at their estimated fair values as of the acquisition date. The excess value of the consideration paid over the fair value of assets acquired and liabilities assumed was recorded as goodwill. The purchase price allocation resulted in goodwill of $2.3 million, which is not deductible for income tax purposes. Goodwill resulting from the acquisition was allocated to the Company’s one operating segment, community banking, and consists largely of the synergies and economies of scale expected from combining the operations of CMYF and the Company. The Company recorded net assets acquired of approximately $16.5 million consisting of approximately $129.1 million in assets, inclusive of $78.8 million of loans, of which $0.7 million were classified as credit impaired, and assumed approximately $112.6 million of liabilities, inclusive of $110.1 million of deposits. All amounts reported were finalized during the fourth quarter of 2019. Core deposit intangible assets of $3.0 million are being amortized using an accelerated method over the estimated useful lives of the related deposits of 10 years. Unaudited pro forma consolidated revenues and net income as if the CMYF acquisition had occurred as of January 1, 2019, are not presented because the effect of this acquisition was not considered significant. The accompanying consolidated statements of income include the results of operations of the acquired entity from the April 8, 2019 acquisition date. Although legally merged with FIB, the acquired entity continued to do business as CMYF until June 7, 2019, at which point CMYF’s operations were integrated with the Company’s operations. 86 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) Idaho Independent Bank. On October 11, 2018, the Company also entered into a definitive agreement to acquire all the outstanding stock of IIBK, a community bank headquartered in Coeur d’Alene, Idaho with 11 banking offices across Idaho. The acquisition was completed on April 8, 2019, and the Company converted data processing systems occurred on June 7, 2019. Consideration for the acquisition was $157.3 million, consisting of the issuance of 3,871,422 shares of the Company’s Class A common stock valued at $40.64 per share, the closing price of the Company’s Class A common stock as quoted on the NASDAQ stock market on the acquisition date. Holders of each share of IIBK common stock received 0.50 shares of First Interstate Class A common stock for each share of IIBK common stock. Previously unvested IIBK restricted stock awards outstanding immediately prior to the close of the transaction vested and were considered issued and outstanding at acquisition close and were included in consideration. All IIBK stock options outstanding vested and were settled by IIBK prior to the close of the transaction. The assets and liabilities of IIBK were recorded in the Company’s consolidated financial statements at their estimated fair values as of the acquisition date. The excess value of the consideration paid over the fair value of assets acquired and liabilities assumed is recorded as goodwill. The purchase price allocation resulted in goodwill of $73.0 million, which is not deductible for income tax purposes. Goodwill resulting from the acquisition was allocated to the Company’s one operating segment, community banking, and consists largely of the synergies and economies of scale expected from combining the operations of IIBK and the Company. The following table summarizes the consideration paid, fair values of the IIBK assets acquired and liabilities assumed, and the resulting goodwill. All amounts reported were finalized during the fourth quarter of 2019. As of April 8, 2019 Assets acquired: Cash and cash equivalents Investment securities Loans held for investment Mortgage loans held for sale Allowance for loan loss Premises and equipment Other real estate owned (“OREO”) Company owned life insurance Core deposit intangible assets Deferred tax assets, net Other assets Total assets acquired Liabilities assumed: Deposits Accounts payable and accrued expense Other borrowed funds Securities sold under repurchase agreements Total liabilities assumed Net assets acquired Consideration paid: Class A common stock Total consideration paid Goodwill As Recorded by IIBK Fair Value Adjustments As Recorded by the Company $ 270.7 $ 62.7 347.6 0.5 (6.3) 16.5 0.4 15.2 — 3.2 8.6 719.1 596.5 15.2 4.0 30.4 646.1 $ 73.0 $ — 0.5 (1) (9.8) (2) (3) (4) (5) — 6.3 4.8 2.0 — 13.6 (6) (2.6) (7) (0.7) (8) 14.1 (9) (10) (11) 0.1 2.6 0.1 — 2.8 11.3 $ $ $ $ $ 270.7 63.2 337.8 0.5 — 21.3 2.4 15.2 13.6 0.6 7.9 733.2 596.6 17.8 4.1 30.4 648.9 84.3 157.3 157.3 73.0 Explanation of fair value adjustments and the removal of previously recorded fair value marks recorded by IIBK: (1) Write up of the book value of investments to their estimated fair values on the date of acquisition based upon quotes obtained from an independent third-party pricing service. 87 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) (2) Write down of the book value of loans to their estimated fair values. The fair value of the loans was estimated using cash flow projections based on the remaining maturity and repricing terms, adjusted for estimated future credit losses and prepayments and discounted to present value using a risk-adjusted market rate for similar loans. The fair value of collateral dependent loans acquired with deteriorated credit quality was estimated based on the Company’s analysis of the fair value of each loan’s underlying collateral, discounted using market-derived rates of return with consideration given to the period of time and costs associated with foreclosure and disposition of the collateral. (3) Adjustment to remove the IIBK allowance for loan losses at acquisition date, as the credit risk is included in the fair value adjustment for loans receivable described in (2) above. (4) Write up of the book value of premises and equipment to their estimated fair values on the date of acquisition based upon broker’s opinion of value. (5) Adjustment to the book value of other real estate owned to their estimated fair values on the date of acquisition based on appraisal value. (6) Adjustment represents the value of the core deposit base assumed in the acquisition based upon valuation from an independent accounting and advisory firm. (7) Adjustment consists of the write-off of pre-existing deferred tax assets and purchase accounting adjustments as a result of the acquisition. (8) Adjustment consists of reductions to the fair value of other items. (9) Increase in book value of time deposits to their estimated fair values based upon interest rates of similar time deposits with similar terms on the date of acquisition based upon valuation from an independent accounting and advisory firm. (10) Adjustment to the liability for the nonqualified retirement plan. (11) Adjustment of the book value of debt to the estimated fair values on the date of acquisition based upon interest rates in the market. Core deposit intangible assets of $13.6 million are being amortized using an accelerated method over the estimated useful lives of the related deposits of 10 years. Effective January 1, 2020, the Company began accounting for PCD loans pursuant to ASC Topic 326. As such, the following disclosures are no longer applicable for the current period and are only presented for periods prior to the adoption of ASC Topic 326. Prior to the adoption of ASC 326, the Company acquired certain loans that were subject to Accounting Standards Codification (“ASC”) Topic 310-30 “Loans and Debt Securities Acquired with Deteriorated Credit Quality.” ASC Topic 310-30 provides recognition, measurement, and disclosure guidance for purchased loans acquired in business combinations, for which there was, at acquisition, evidence of more than insignificant deterioration of credit quality since origination. The Company has purchased such loans through business combinations. For loans that meet the criteria stipulated in ASC Topic 310-30, the excess of all cash flows expected at acquisition over the initial fair value of the loans acquired (“accretable yield” is amortized to interest income over the expected remaining lives of the underlying loans using the effective interest method. The accretable yield will fluctuate due to changes in (i) estimated lives of underlying credit-impaired loans, (ii) assumptions regarding future principal and interest amounts collected, and (iii) indices used to fair value variable rate loans. Information regarding IIBK loans acquired deemed credit impaired as of the April 8, 2019 acquisition date are as follows: Contractually required principal and interest payments Contractual cash flows not expected to be collected (“non-accretable discount”) Cash flows expected to be collected Interest component of cash flows expected to be collected (“accretable discount”) Fair value of acquired credit-impaired loans $ $ 24.1 3.9 20.2 3.4 16.8 Information regarding IIBK acquired loans not deemed credit-impaired at the April 8, 2019 acquisition date are as follows: Contractually required principal and interest payments Contractual cash flows not expected to be collected Fair value at acquisition $ $ 398.7 15.2 321.5 Unaudited pro forma consolidated revenues and net income as if the IIBK acquisition had occurred as of January 1, 2019, are not presented because the effect of this acquisition was not considered significant. 88 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) The accompanying consolidated statements of income include the results of operations of the acquired entity from the April 8, 2019 acquisition date. Although IIBK legally merged with FIB, the acquired entity continued to do business as IIBK until June 7, 2019, at which point IIBK’s operations were integrated with the Company’s operations. Acquisition related expenses There were no material third party acquisition related costs recorded by the Company in 2020 compared to $20.3 million and $12.4 million of third party acquisition related costs recorded in 2019 and 2018, respectively. These costs are incorporated in non-interest expense in the Company’s consolidated statements of income. (3) GOODWILL AND CORE DEPOSIT INTANGIBLES Goodwill Net carrying value at beginning of period Acquisitions and measurement period adjustments Net carrying value at end of period Year Ended December 31, 2019 2020 $ $ 621.6 — 621.6 $ $ 546.7 74.9 621.6 The Company performed its annual goodwill impairment qualitative assessment as of July 1, 2020, 2019, and 2018 and determined the Company’s goodwill was not considered impaired. In addition, there were no events or circumstances that occurred during the second half of 2020 that would more-likely-than-not reduce the fair value of a reporting unit below its carrying value, the Company did not perform interim testing as of December 31, 2020. Core deposit intangibles (“CDI”) The following table sets forth activity for identifiable core deposit intangibles subject to amortization: Gross CDI, beginning of period Established through acquisitions Reductions due to sale of accounts Accumulated amortization Net CDI, end of period Year Ended December 31, 2019 2020 $ $ 106.0 — — (54.8) 51.2 $ $ 89.7 16.6 (0.3) (43.9) 62.1 Amortization expense of CDI assets was $10.9 million, $11.2 million and $7.9 million for the fiscal years ended December 31, 2020, 2019 and 2018, respectively. CDI are evaluated for impairment if events and circumstances indicate a possible impairment. The CDI are amortized using an accelerated method based on the estimated weighted average useful lives of the related deposits, which is generally ten years. The following table provides estimated future CDI amortization expense: Years ending December 31, 2021 2022 2023 2024 2025 Thereafter Total 89 $ $ 9.9 9.0 8.2 7.3 6.5 10.3 51.2 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) (4) INVESTMENT SECURITIES The amortized cost and approximate fair values of investment securities are summarized as follows: December 31, 2020 Available-for-Sale State, county, and municipal securities Obligations of U.S. government agencies U.S. agency residential mortgage-backed securities & collateralized mortgage obligations Private mortgage-backed securities Corporate Securities Other investments Total December 31, 2020 Held-to Maturity State, county, and municipal securities U.S agency residential mortgage-backed securities & collateralized mortgage obligations Corporate securities Other investments Total December 31, 2019 Available-for-Sale U.S. Treasury notes State, county, and municipal securities Obligations of U.S. government agencies U.S. agency residential mortgage-backed securities & collateralized mortgage obligations Private mortgage-backed securities Corporate Securities Other investments Total December 31, 2019 Held-to Maturity State, county, and municipal securities Obligations of U.S. government agencies U.S. agency residential mortgage-backed securities & collateralized mortgage obligations Corporate securities Other investments Total Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value $ $ 462.1 $ 332.9 2,830.8 10.9 295.8 0.2 3,932.7 $ 4.8 $ 1.0 69.3 0.1 6.5 — 81.7 $ (1.0) $ (2.0) (2.5) (0.1) (0.1) — (5.7) $ 465.9 331.9 2,897.6 10.9 302.2 0.2 4,008.7 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value $ 46.6 $ 3.2 $ — $ 49.8 1.0 3.9 0.1 51.6 $ 0.1 0.1 — 3.4 $ $ — — — — $ 1.1 4.0 0.1 55.0 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value $ $ 9.0 $ 80.1 367.5 2,303.6 47.6 134.5 3.2 2,945.5 $ — $ 0.8 0.1 19.6 — 1.2 — 21.7 $ — $ — (0.8) (6.0) (0.4) — — (7.2) $ 9.0 80.9 366.8 2,317.2 47.2 135.7 3.2 2,960.0 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value $ $ 57.3 $ 19.8 1.2 13.9 0.1 92.3 $ 2.1 $ — — 0.1 — 2.2 $ — $ — — — — — $ 59.4 19.8 1.2 14.0 0.1 94.5 There were no material gross realized gains and no material gross realized losses on the disposition of available-for- sale securities during 2020, 2019, or 2018. 90 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) As of December 31, 2020, the Company had general obligation securities with amortized costs of $38.6 million included in state, county, and municipal securities, of which $26.0 million, or 67.4% were issued by political subdivisions or agencies within the states of Idaho, Montana, Oregon, South Dakota, Washington, and Wyoming. The following tables show the gross unrealized losses and fair values of investment securities, aggregated by investment category, and the length of time individual investment securities have been in a continuous unrealized loss position, as of December 31, 2020 and 2019. There were no held-to-maturity securities in a continuous unrealized loss position as of December 31, 2020. December 31, 2020 Available-for-Sale Less than 12 Months Gross Unrealized Losses Fair Value 12 Months or More Gross Unrealized Losses Fair Value Total Fair Value Gross Unrealized Losses State, county, and municipal securities Obligations of U.S. government agencies $ 148.1 $ 235.6 (1.0) $ (2.0) — $ — — $ — 148.1 $ 235.6 U.S. agency residential mortgage-backed securities & collateralized mortgage obligations Private mortgage-backed securities Corporate securities Total December 31, 2019 Available-for-Sale 434.0 — 20.9 838.6 $ $ (2.4) — (0.1) (5.5) $ 12.3 4.3 — 16.6 $ (0.1) (0.1) — (0.2) $ Less than 12 Months Gross Unrealized Losses Fair Value 12 Months or More Gross Unrealized Losses Fair Value (1.0) (2.0) (2.5) (0.1) (0.1) (5.7) 446.3 4.3 20.9 855.2 $ Total Fair Value Gross Unrealized Losses Obligations of U.S. government agencies $ 185.3 $ (0.8) $ — $ — $ 185.3 $ (0.8) U.S. agency residential mortgage-backed securities & collateralized mortgage obligations Private mortgage-backed securities 740.1 — (4.6) — 155.9 46.6 (1.4) (0.4) 896.0 46.6 Total $ 925.4 $ (5.4) $ 202.5 $ (1.8) $ 1,127.9 $ (6.0) (0.4) (7.2) The available-for-sale securities portfolio contains securities that are guaranteed by a sovereign entity or are generally considered to have non-credit related risks, such as interest rate risk or prepayment and liquidity factors. The Company considers whether the securities are issued by the federal government or its agencies and whether downgrades by bond rating agencies have occurred. The unrealized losses are due to changes in interest rates and other market conditions. The Company had 181 and 338 individual investment securities that were in an unrealized loss position as of December 31, 2020 and 2019, respectively, related primarily to fluctuations in the current interest rates. As of December 31, 2020, the Company had the intent and ability to hold these investment securities for a period of time sufficient to allow for an anticipated recovery. Furthermore, the Company does not have the intent to sell any of the available-for-sale securities in the above table and it is more likely than not that the Company will not have to sell any securities before a recovery in cost. There were no material allowances for credit loss as of December 31, 2020 and no impairment losses were recorded during 2019 or 2018 for investment securities. Maturities of securities do not reflect rate repricing opportunities present in adjustable-rate mortgage-backed securities. As of December 31, 2020 and 2019, the Company had variable rate mortgage-backed securities with amortized costs of $220.7 million and $298.1 million, respectively, classified as available-for-sale in the table below. 91 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) Maturities of investment securities as of December 31, 2020 are shown below. Maturities of mortgage-backed securities have been adjusted to reflect shorter maturities based upon estimated prepayments of principal. All other investment securities maturities are shown at contractual maturity dates. December 31, 2020 Within one year After one year but within five years After five years but within ten years After ten years Total Available-for-Sale Held-to-Maturity Amortized Cost Estimated Fair Value Amortized Cost Estimated Fair Value $ 687.6 $ 991.4 $ 8.3 $ 1,587.7 1,362.6 736.2 921.2 996.3 658.4 27.8 14.1 1.4 $ 3,932.7 $ 4,008.7 $ 51.6 $ 8.4 29.0 16.2 1.4 55.0 As of December 31, 2020, the Company had investment securities callable within one year with amortized costs and estimated fair values of $282.4 million and $281.7 million, respectively. These investment securities are primarily classified as available-for-sale and included in the after five years but within ten years category in the table above. As of December 31, 2020, the Company had no callable structured notes. There were no significant concentrations of investments at December 31, 2020, (greater than 10 percent of stockholders’ equity) in any individual security issuer, except for U.S. government or agency-backed securities. As of December 31, 2020 and 2019, the Company recorded amortized costs of $2,323.0 million and $2,132.0 million, respectively, for investment securities pledged to secure public deposits and securities sold under repurchase agreements and had approximate fair values as of December 31, 2020 and 2019 of $2,383.6 million and $2,144.9 million, respectively. All securities sold under repurchase agreements are with clients and mature on the next banking day. The Company retains possession of the underlying securities sold under repurchase agreements. (5) LOANS HELD FOR SALE Mortgage loans held for immediate sale in the secondary market were $74.0 million as of December 31, 2020, compared to $100.9 million as of December 31, 2019. Residential loans that the Company originated with the intent to sell are recorded at fair value. Conforming agency mortgage production is sold on a servicing retained basis. Certain loans, such as government guaranteed mortgage loans, are sold on a servicing released basis. 92 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) (6) LOANS HELD FOR INVESTMENT The following table presents loans by segment as of the dates indicated: Real estate loans: Commercial* Construction loans: Land acquisition & development Residential Commercial Total construction loans Residential* Agricultural Total real estate loans Consumer loans: Indirect Direct and advance lines Credit card Total consumer loans Commercial* Agricultural Other, including overdrafts Loans held for investment Deferred loan fees and costs 2020 2019 $ 3,743.2 $ 3,487.8 265.0 250.9 523.5 1,039.4 1,396.3 220.6 6,399.5 805.1 150.6 70.2 1,025.9 2,153.9 247.6 1.6 9,828.5 (21.0) 9,807.5 (144.3) 9,663.2 $ 302.1 244.1 431.5 977.7 1,246.1 226.6 5,938.2 784.6 179.0 81.6 1,045.2 1,673.7 279.1 — 8,936.2 (5.5) 8,930.7 (73.0) 8,857.7 Loans held for investment, net of deferred fees and costs Allowance for credit losses Net loans held for investment $ *In conjunction with the adoption of ASC 326, the Company reclassified certain 2019 amounts in our multi-family loan portfolio from residential real estate to commercial real estate. Additionally, we reclassified certain 2019 amounts in our commercial 1-4 family and commercial home equity lines of credit from commercial real estate to commercial to conform to the 2020 presentation. These reclassifications did not change previously reported loan totals. 93 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) Allowance for Credit Losses The following tables represent, by loan portfolio segment, the activity in the allowance for credit losses for loans held for investment: Beginning Balance Impact of Adopting ASC 326 Provision for Credit Loss Expense Loans Charged- Off Recoveries Collected Ending Balance December 31, 2020 Allowance for credit losses (1) Real estate: Commercial real estate: Non-owner occupied Owner occupied Multi-family Total commercial real estate Construction: Land acquisition & development Residential construction Commercial construction Total construction Residential real estate: Residential 1-4 family Home equity and HELOC Total residential real estate Agricultural real estate Total real estate Consumer: Indirect Direct and advance lines Credit card Total consumer Commercial: Commercial and floor plans Commercial purpose secured by 1-4 family Credit card Total commercial Agricultural: Agricultural Total agricultural Total allowance for credit losses $ $ 8.8 $ 10.0 0.7 19.5 4.9 $ 3.5 6.9 15.3 11.7 $ 5.0 3.4 20.1 — $ (0.4) — (0.4) 0.1 $ 0.2 — 0.3 1.9 1.5 2.7 6.1 1.8 1.0 2.8 0.5 28.9 4.5 2.9 2.5 9.9 25.5 5.9 1.2 32.6 (0.1) (0.9) 1.3 0.3 10.6 0.5 11.1 1.8 28.5 8.8 3.0 0.3 12.1 (5.1) (3.8) (1.1) (10.0) (0.4) 1.0 3.3 3.9 (1.1) (0.4) (1.5) 0.4 22.9 5.4 1.6 1.8 8.8 20.4 2.5 1.1 24.0 (0.5) — — (0.5) — — — — (0.9) (4.1) (3.9) (2.8) (10.8) (8.0) (0.1) (1.0) (9.1) 0.4 — — 0.4 0.1 0.3 0.4 — 1.1 2.1 1.0 0.8 3.9 1.4 0.2 0.1 1.7 25.5 18.3 11.0 54.8 1.3 1.6 7.3 10.2 11.4 1.4 12.8 2.7 80.5 16.7 4.6 2.6 23.9 34.2 4.7 0.3 39.2 1.6 1.6 73.0 $ (0.6) (0.6) 30.0 $ (0.2) (0.2) 55.5 $ (0.1) (0.1) (20.9) $ 0.7 — — 0.7 6.7 $ 144.3 (1) Amounts presented are exclusive of the allowance for credit losses related to unfunded commitments which are included in “Note 19 - Financial Instruments with Off-Balance Sheet Risk” included in this report. 94 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) The following tables represent activity in the allowance for credit losses for loans held for investment under historical GAAP: Year Ended December 31, 2019 Real Estate Consumer Commercial Agriculture Other Total Allowance for loan losses: Beginning balance Provision charged (credited) to operating expense Less loans charged-off Add back recoveries of loans previously charged-off Ending balance Individually evaluated for impairment Collectively evaluated for impairment Ending balance Total loans: Individually evaluated for impairment $ 31.0 $ 8.7 $ 31.3 $ 2.0 $ — $ 73.0 (1.3) (3.5) 10.6 (13.0) 4.5 (6.6) 0.1 (0.5) 2.7 3.6 3.4 28.9 $ 9.9 $ 32.6 $ 1.7 $ — $ 1.7 $ 27.2 9.9 30.9 28.9 $ 9.9 $ 32.6 $ — 1.6 $ 0.2 $ 1.4 1.6 $ — — — — $ — $ — — $ 13.9 (23.6) 9.7 73.0 3.6 69.4 73.0 41.1 $ — $ 17.3 $ 6.3 $ — $ 64.7 $ $ $ $ Collectively evaluated for impairment 5,897.1 1,045.2 1,656.4 272.8 — 8,871.5 Loans held for investment $ 5,938.2 $ 1,045.2 $ 1,673.7 $ 279.1 $ — $ 8,936.2 Year Ended December 31, 2018 Real Estate Consumer Commercial Agriculture Other Total Allowance for loan losses: Beginning balance Provision charged (credited) to operating expense Less loans charged-off Add back recoveries of loans previously charged-off Ending balance Individually evaluated for impairment Collectively evaluated for impairment Ending balance Total loans: Individually evaluated for impairment $ 31.7 $ 8.7 $ 30.5 $ 1.2 $ — $ 72.1 (0.7) (3.7) 6.8 (11.3) 1.9 (4.7) 3.7 4.5 3.6 31.0 $ 8.7 $ 31.3 $ 1.3 $ — $ 5.2 $ 29.7 8.7 26.1 31.0 $ 8.7 $ 31.3 $ 0.6 — 0.2 2.0 $ 0.3 $ 1.7 2.0 $ — — — — $ — $ — — $ 8.6 (19.7) 12.0 73.0 6.8 66.2 73.0 41.8 $ — $ 19.9 $ 3.1 $ — $ 64.8 $ $ $ $ Collectively evaluated for impairment 5,546.1 1,070.2 1,540.4 251.7 1.6 8,410.0 Loans held for investment $ 5,587.9 $ 1,070.2 $ 1,560.3 $ 254.8 $ 1.6 $ 8,474.8 Collateral-Dependent Financial Loans A collateral-dependent financial loan relies solely on the operation or sale of the collateral for repayment. In evaluating the overall risk associated with a loan, the Company considers character, overall financial condition and resources, and payment record of the borrower; the prospects for support from any financially responsible guarantors; and the nature and degree of protection provided by the cash flow and value of any underlying collateral. The loan may become collateral-dependent where the borrower is experiencing financial difficulty and as sources of repayment become inadequate over time and that repayment is expected to be provided substantially through the operation or sale of the collateral. The following tables present the amortized cost basis of collateral-dependent loans by class of loans as of December 31, 2020. 95 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) As of December 31, 2020 Real estate Commercial Agricultural Total collateral-dependent Impaired Loans Collateral Type Business Assets Real Property $ $ 1.3 $ 6.1 — 7.4 $ 6.5 $ 1.3 0.8 8.6 $ Other Total 1.1 $ 0.4 — 1.5 $ 8.9 7.8 0.8 17.5 Prior to the adoption of ASC 326 on January 1, 2020, loans were reported as impaired when, based on then current information and events, it was probable we would be unable to collect all amounts due in accordance with the original contractual terms of the loan agreement, including scheduled principal and interest payments. The amount of the impairment was measured using cash flows discounted at the loan’s effective interest rate, except when it was determined that the primary source of repayment for the loan was the operation or liquidation of the underlying collateral. In such cases, the current fair value of the collateral, reduced by anticipated selling costs, was used to measure impairment. The Company considered impaired loans to include all loans, except consumer loans, that were risk rated as doubtful or for which interest accrual had been discontinued or that would have been renegotiated in a troubled debt restructuring. Interest payments received on impaired loans were applied based on whether they were on accrual or non-accrual status. Interest income recognized by the Company on impaired loans primarily related to loans modified in troubled debt restructurings that remained on accrual status. Interest payments received on non- accrual impaired loans were applied to principal. Interest income was subsequently recognized only to the extent cash payments were received in excess of the principal due. The following tables present information on the Company’s recorded investment of impaired loans as of the dates indicated: Real estate: Commercial Construction: Land acquisition & development Residential Commercial Total construction loans Residential Agricultural Total real estate loans Commercial Agricultural Total December 31, 2019 Unpaid Total Principal Balance Recorded Investment With No Allowance Recorded Investment With Allowance Total Recorded Investment Related Allowance $ 29.2 $ 12.9 $ 10.8 $ 23.7 $ 9.2 0.1 1.0 10.3 6.9 8.6 55.0 25.5 6.9 87.4 $ 0.4 — 0.5 0.9 3.9 5.2 22.9 12.0 2.3 37.2 $ 2.6 — — 2.6 1.8 3.0 18.2 5.3 4.0 27.5 $ 3.0 — 0.5 3.5 5.7 8.2 41.1 17.3 6.3 64.7 $ $ 0.7 0.5 — 0.1 0.6 0.2 0.2 1.7 1.7 0.2 3.6 96 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) Real estate: Commercial Construction: Land acquisition & development Residential Commercial Total construction loans Residential Agricultural Total real estate loans Commercial Agricultural Total December 31, 2018 Unpaid Total Principal Balance Recorded Investment With No Allowance Recorded Investment With Allowance Total Recorded Investment Related Allowance $ 22.2 $ 8.6 $ 7.7 $ 16.3 $ 10.0 1.1 0.7 11.8 8.8 12.9 55.7 24.1 3.2 0.4 0.6 0.2 1.2 5.7 12.5 28.0 5.5 2.5 3.5 0.4 — 3.9 2.0 0.2 13.8 14.4 0.6 3.9 1.0 0.2 5.1 7.7 12.7 41.8 19.9 3.1 $ 83.0 $ 36.0 $ 28.8 $ 64.8 $ 0.7 0.2 0.1 — 0.3 0.3 — 1.3 5.2 0.3 6.8 The following table presents the average recorded investment in and income recognized on impaired loans for the periods indicated: Real estate Commercial Agricultural Total Year Ended December 31, 2019 2018 Average Recorded Investment Income Recognized Average Recorded Investment Income Recognized $ $ 41.4 $ 18.7 4.6 64.7 $ $ 0.1 0.2 — 0.3 $ 50.0 $ 21.9 2.1 74.0 $ 0.1 0.2 — 0.3 97 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) Loans are considered past due if the required principal and interest payments have not been received as of the date such payments were due. Loans classified in the following table as greater than 90 days past due are still accruing interest. The following tables present the contractual aging of the Company’s recorded amortized cost basis in loans by portfolio as of the dates indicated. Loans held for investment $ As of December 31, 2020 Real estate Commercial Construction: Land acquisition & development Residential Commercial Total construction loans Residential Agricultural Total real estate loans Consumer: Indirect consumer Other consumer Credit card Total consumer loans Commercial Agricultural Other, including overdrafts As of December 31, 2019 Real estate Commercial Construction: Land acquisition & development Residential Commercial Total construction loans Residential Agricultural Total real estate loans Consumer: Indirect consumer Other consumer Credit card Total consumer loans Commercial Agricultural Other, including overdrafts 30 - 59 Days 60 - 89 Days > 90 Days Total Loans 30 or More Days Current Past Due Past Due Past Due Past Due Loans Non-accrual Loans (1) Total Loans $ 7.6 $ 1.2 $ 4.0 $ 12.8 $ 3,720.8 $ 9.6 $ 3,743.2 2.5 1.5 12.2 16.2 4.7 2.0 30.5 6.4 0.8 0.6 7.8 6.2 0.4 — 44.9 $ 1.1 0.4 — 1.5 1.6 — 4.3 2.0 0.2 0.4 2.6 1.8 0.6 — 9.3 $ 0.1 — — 0.1 0.5 — 4.6 0.5 0.2 0.6 1.3 1.2 1.4 — 8.5 $ 3.7 1.9 12.2 17.8 6.8 2.0 39.4 260.6 247.9 511.2 1,019.7 1,384.9 212.4 6,337.8 8.9 1.2 1.6 11.7 9.2 2.4 — 794.3 149.0 68.6 1,011.9 2,132.9 242.1 1.6 62.7 $ 9,726.3 $ 0.7 1.1 0.1 1.9 4.6 6.2 22.3 265.0 250.9 523.5 1,039.4 1,396.3 220.6 6,399.5 1.9 0.4 — 2.3 11.8 3.1 — 805.1 150.6 70.2 1,025.9 2,153.9 247.6 1.6 39.5 $ 9,828.5 30 - 59 Days 60 - 89 Days > 90 Days Total Loans 30 or More Days Current Past Due Past Due Past Due Past Due Loans Non-accrual Loans (1) Total Loans $ 5.5 $ 1.1 $ 0.6 $ 7.2 $ 3,467.6 $ 13.0 $ 3,487.8 0.7 1.5 — 2.2 3.8 0.8 12.3 7.6 1.2 0.8 9.6 4.8 0.9 — 27.6 $ 0.8 0.8 — 1.6 1.4 0.5 4.6 1.9 0.5 0.5 2.9 2.6 0.1 — 10.2 $ 0.3 — — 0.3 1.1 — 2.0 0.5 0.1 0.8 1.4 2.3 — — 5.7 $ 1.8 2.3 — 4.1 6.3 1.3 18.9 298.9 241.8 431.0 971.7 1,235.2 220.1 5,894.6 10.0 1.8 2.1 13.9 9.7 1.0 — 773.0 176.7 79.5 1,029.2 1,650.3 275.7 — 43.5 $ 8,849.8 $ 1.4 — 0.5 1.9 4.6 5.2 24.7 302.1 244.1 431.5 977.7 1,246.1 226.6 5,938.2 1.6 0.5 — 2.1 13.7 2.4 — 784.6 179.0 81.6 1,045.2 1,673.7 279.1 — 42.9 $ 8,936.2 Loans held for investment $ (1) As of December 31, 2020 and December 31, 2019, none of our non-accrual loans were earning interest income. No material interest income was recognized on non-accrual loans at December 31, 2020 and 2019, respectively. Additionally, no material accrued interest was reversed at December 31, 2020. 98 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) Troubled Debt Restructurings Modifications of performing loans are made in the ordinary course of business and are completed on a case-by-case basis as negotiated with the borrower in connection with the ongoing loan collection processes. Loan modifications typically include interest rate changes, interest only periods of less than twelve months, short-term payment deferrals and extension of amortization periods to provide payment relief. A loan modification is considered a troubled debt restructuring if the borrower is experiencing financial difficulties and the Company, for economic or legal reasons, grants a concession to the borrower that it would not otherwise consider. Certain troubled debt restructurings are on non-accrual status at the time of restructuring and may be returned to accrual status if the borrower has sustained repayment performance in accordance with the restructuring agreement for a period of at least six months and management is reasonably assured of the borrower’s future performance. If the troubled debt restructuring meets these performance criteria, and the interest rate granted at the modification is equal to or greater than the rate that the Company was willing to accept at the time of the restructuring for a new loan with comparable risk, then the loan will return to performing status and the accrual of interest will resume. Any such loan will continue to be individually evaluated for credit deterioration and disclosed as collateral dependent loans. The Coronavirus Aid, Relief, and Economic Security Act (“CARES Act”) was signed into law on March 27, 2020 in response to the outbreak of a new strain of coronavirus (also known as, and hereinafter referred to as, “COVID-19”). Key provisions of the CARES Act include one-time payments to individuals, strengthened unemployment insurance, additional health-care funding, temporary amendments to the Internal Revenue Code, and loans and grants to certain businesses. The CARES Act was later extended by the Coronavirus Response and Relief Supplemental Appropriations Act, 2021, or RELIEF Act, which was signed into law on December 27, 2020. The CARES Act provided financial institutions with options on the treatment of troubled debt restructurings, and the Company elected to apply these options at the individual loan level. Under the CARES Act, the Company can elect: (1) to suspend the requirements under GAAP for loan modifications related to the COVID–19 pandemic that would otherwise be categorized as a troubled debt restructuring; and/or (2) to suspend any determination of a loan modified as being a troubled debt restructuring as a result of the effects of the COVID–19 pandemic, including impairment for accounting purposes. If the Company elects a suspension noted above, the suspension (a) will be effective for the term of the loan modification, but solely with respect to any modification, including a forbearance arrangement, an interest rate modification, a repayment plan, and any other similar arrangement that defers or delays the payment of principal or interest, occurring for a loan that was not more than 30 days past due as of December 31, 2019; and (b) will not apply to any adverse impact on the credit of a borrower that is not related to the COVID–19 pandemic. These suspensions currently are expected to end on January 1, 2022. The Company renegotiated loans in troubled debt restructurings in the amount of $14.5 million as of December 31, 2020, of which $11.3 million were included in non-accrual loans and $3.2 million were on accrual status. As of December 31, 2020, the Company allocated $2.9 million of allowance for credit losses to those loans and the Company had no material commitments to lend additional funds to borrowers whose existing loans have been renegotiated or are classified as non-accrual. The Company renegotiated loans in troubled debt restructurings in the amount of $24.9 million as of December 31, 2019, of which $19.4 million were included in non-accrual loans and $5.5 million were on accrual status. As of December 31, 2019, the Company allocated $0.3 million of allowance for credit losses to those loans and the Company had no material commitments to lend additional funds to borrowers whose existing loans have been renegotiated or are classified as non-accrual. 99 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) The following table presents information of the Company’s troubled debt restructurings that occurred during the periods indicated: $ $ $ $ $ December 31, 2020 Commercial real estate Total loans restructured during period Number of Notes 3 3 December 31, 2019 Commercial real estate Commercial Agriculture Total loans restructured during period 4 1 6 11 Type of Concession Interest only period Extension of term or amortization schedule Interest rate adjustment Other (1) Principal Balance at Restructure 0.2 $ 0.2 $ 0.2 $ — — 0.2 $ — $ — $ 0.2 $ — — 0.2 $ — $ — $ 0.1 $ 0.1 $ — $ — — — $ 2.9 $ 5.0 2.1 10.0 $ 0.3 0.3 3.3 5.0 2.1 10.4 December 31, 2018 Commercial real estate Agriculture real estate Consumer 3 1 1 5 3.6 $ — — 3.6 $ — $ — — — $ — $ — — — $ — $ 0.2 0.3 0.5 $ 3.6 0.2 0.3 4.1 Total loans restructured during period (1) Other includes concessions that reduce or defer payments for a specified period of time and/or concessions that do not fit into other designated categories. $ For troubled debt restructurings that were on non-accrual status or otherwise deemed collateral-dependent before the modification, a specific reserve may already be recorded. In periods subsequent to modification, the Company continues to evaluate all troubled debt restructurings for possible credit deterioration and recognizes credit loss through the allowance. Additionally, these loans continue to work through the credit cycle through charge-off, pay- off, or foreclosure. Financial effects of modifications of troubled debt restructurings may include principal loan forgiveness or other charge-offs directly related to the restructuring. The Company had no charge-offs directly related to modifying troubled debt restructurings during December 31, 2020, 2019, and 2018. The Company had no material troubled debt restructurings during the previous 12 months for which there was a payment default during December 31, 2020, 2019, and 2018. The Company considers a payment default to occur on troubled debt restructurings when the loan is 90 days or more past due or is placed on non-accrual status after the modification. The terms of certain other loans were modified during the quarter ended December 31, 2020 that did not meet the definition of a troubled debt restructuring. These loans have a total recorded investment of $63.5 million as of December 31, 2020. The modification of these loans involved either a modification of the terms of a loan to borrowers who were not experiencing financial difficulties or a delay in a payment that was considered to be insignificant. In order to determine whether a borrower is experiencing financial difficulty, the Company evaluates the probability that the borrower will be in payment default on any of its debt in the foreseeable future without the modification. This evaluation is performed under the Company’s internal underwriting policy. 100 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) Credit Quality Indicators As part of the on-going and continuous monitoring of the credit quality of the Company’s loan portfolio, management tracks internally assigned risk classifications of loans based on relevant information about the ability of borrowers to service their debt including, among other factors, current financial information, historical payment experience, credit documentation, public information, and current economic trends. The Company analyzes loans individually to classify the credit risk of the loans. This analysis generally includes loans with an outstanding balance greater than $1.0 million, which are generally considered non-homogeneous loans, such as commercial and commercial real estate loans. This analysis is performed no less than on an annual basis, dependent upon the size of exposure and the financial reporting frequency to which the borrower is contractually obligated. Homogeneous loans, including small business loans are typically managed by payment performance. The Company risk rates its loans internally in accordance with a Uniform Classification System developed jointly by the various bank regulatory agencies to internally risk rate loans. The Uniform Classification System defines three broad categories of criticized assets, which the Company uses as credit quality indicators in addition to the 6 Pass ratings in its 10-point rating scale: Special Mention — includes loans that exhibit a potential weakness in financial condition, loan structure, or documentation that warrants management’s close attention. If not promptly corrected, the potential weaknesses may result in deterioration of the repayment prospects for the loan or of the institution’s credit position at some future date. Substandard — includes loans that are inadequately protected by the current net worth and paying capacity of the borrower which have a well-defined weakness or weaknesses that jeopardize the liquidation of the debt. Although the primary source of repayment for a substandard loan may not currently be sufficient, collateral or other sources of repayment are sufficient to satisfy the debt. Continuance of a substandard loan is not warranted unless positive steps are taken to improve the worthiness of the credit. Doubtful — includes loans that exhibit pronounced weaknesses on the basis of currently existing facts, conditions, and values to a point where collection or liquidation for full repayment is highly questionable and improbable. Doubtful loans are required to be placed on non-accrual status and are assigned specific loss exposure. Loans not meeting the criteria above that are analyzed individually as part of the above described process are considered to be pass-rated loans. 101 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) The Company evaluates the credit quality and loan performance for the allowance for credit loan losses of the following segments based on the aforementioned risk scale: Risk by Collateral Commercial real estate non-owner occupied: Pass Special mention Substandard Doubtful Total Commercial real estate owner occupied: Pass Special mention Substandard Doubtful Total Commercial multi-family: Pass Special mention Total Land, acquisition and development: Pass Special mention Substandard Doubtful Total Residential construction: Pass Substandard Total Commercial construction: Pass Special mention Substandard Total Agricultural real estate: Pass Special mention Substandard Doubtful Total Commercial and floor plans: Pass Special mention Substandard Doubtful Total December 31, 2020 Term Loans Amortized Cost Basis by Origination Year 2020 2019 2018 2017 2016 Prior Revolving Loans Amortized Cost Basis Total 0.3 15.7 $ 495.9 $ 304.9 $ 216.0 $ 105.3 $ 139.7 $ 336.5 $ 13.7 0.9 1.0 13.9 0.2 — — — $ 511.9 $ 309.9 $ 218.1 $ 109.5 $ 147.2 $ 364.1 $ 2.3 2.7 — — 0.1 4.1 6.4 1.1 $ 416.3 $ 312.5 $ 211.2 $ 122.4 $ 153.7 $ 357.9 $ 20.0 11.1 0.1 $ 432.5 $ 328.6 $ 227.5 $ 130.7 $ 187.4 $ 389.1 $ 4.8 9.6 7.1 8.9 11.5 6.5 0.2 — — 18.6 3.1 5.0 15.1 0.2 — 13.8 $ 1,612.1 23.7 38.5 0.2 13.8 $ 1,674.5 — — — 8.9 $ 1,582.9 63.2 — 58.4 0.3 — 0.5 9.2 $ 1,705.0 $ 132.5 $ 58.9 $ 23.5 $ 41.6 $ 25.8 $ 80.5 $ 0.1 $ 132.5 $ 58.9 $ 23.5 $ 41.6 $ 25.8 $ 80.6 $ — — — — — 0.8 $ 363.6 — 0.1 0.8 $ 363.7 $ 104.6 $ 58.8 $ 26.4 $ 30.7 $ 0.9 — 0.1 — 0.2 0.1 — 1.2 0.3 — — — — — — $ 105.1 $ 58.9 $ 27.6 $ 31.7 $ 7.6 $ 26.3 $ 1.2 0.1 0.1 7.6 $ 27.7 $ $ $ 0.1 $ 80.4 $ 64.7 $ 16.7 $ 0.2 — — — — — 0.1 $ 80.6 $ 64.7 $ 16.7 $ 5.6 $ — $ 5.6 $ — $ $ 236.1 $ 195.4 $ 61.2 $ 11.9 $ — — — — — — — 6.0 $ (0.3) $ 1.5 — — — 0.1 (0.2) $ $ 236.1 $ 195.4 $ 62.7 $ 11.9 $ 6.0 $ $ $ 50.0 $ 45.3 $ 28.2 $ 17.2 $ 12.7 $ 27.2 $ 1.0 2.8 1.5 6.7 5.9 1.4 4.4 0.9 0.3 — — — — — 54.2 $ 58.2 $ 32.6 $ 19.6 $ 17.0 $ 32.6 $ 1.0 3.4 0.9 3.4 $ 1,029.4 $ 153.0 $ 136.0 $ 69.8 $ 43.0 $ 92.3 $ 0.5 1.1 2.6 $ 1,044.1 $ 156.2 $ 142.2 $ 77.2 $ 51.1 $ 96.5 $ 7.0 1.9 1.0 1.8 0.4 4.3 0.4 — — 3.9 4.1 0.1 5.6 8.8 0.3 102 5.8 $ 260.2 2.9 0.5 1.8 0.1 — 0.1 6.4 $ 265.0 82.1 $ 249.6 1.3 1.1 83.2 $ 250.9 11.6 $ 521.9 1.5 0.1 11.6 $ 523.5 — — 5.3 $ 185.9 14.4 0.5 20.0 0.6 0.3 — 6.4 $ 220.6 233.1 $ 1,756.6 22.3 32.0 3.6 247.2 $ 1,814.5 2.4 11.5 0.2 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) December 31, 2020 Term Loans Amortized Cost Basis by Origination Year Risk by Collateral Commercial purpose secured by 1-4 family: 2020 2019 2018 2017 2016 Prior Revolving Loans Amortized Cost Basis Total Pass Special mention Substandard Total Agricultural: Pass Special mention Substandard Total $ $ $ $ 82.3 $ 53.7 $ 33.7 $ 20.7 $ 15.5 $ 34.9 $ 0.8 0.5 2.4 1.0 85.2 $ 55.2 $ 38.8 $ 21.1 $ 17.4 $ 36.7 $ 0.1 0.3 0.5 1.4 0.5 1.0 0.3 4.8 17.5 $ 258.3 3.5 0.8 11.0 0.1 18.4 $ 272.8 4.2 $ 47.4 $ 18.1 $ 10.7 $ 0.4 — 0.7 1.5 0.6 3.7 4.2 1.5 4.8 $ 52.6 $ 20.3 $ 15.3 $ 3.0 $ 0.1 0.1 3.2 $ 1.3 $ 0.3 0.4 2.0 $ 130.9 $ 215.6 16.4 13.4 14.1 3.6 147.9 $ 246.1 The Company evaluates the credit quality, loan performance, and the allowance for credit loan losses of its residential and consumer loan portfolios, based primarily on the aging status of the loan and payment activity. Accordingly, loans on nonaccrual status, loans past due 90 days or more and still accruing interest, and loans modified under troubled debt restructurings are considered to be nonperforming for purposes of credit quality evaluation. The following tables present the recorded investment of our other loan portfolios based on the credit risk profile of loans that are performing and loans that are nonperforming as of the periods indicated: December 31, 2020 Term Loans Amortized Cost Basis by Origination Year Risk by Collateral 2020 2019 2018 2017 2016 Prior Revolving Loans Amortized Cost Basis Total Residential 1-4 family: Performing Nonperforming Total Consumer home equity and HELOC: Performing Nonperforming Total Consumer indirect: Performing Nonperforming Total Consumer direct and advance line: Performing Nonperforming Total $ 491.1 $ 113.9 $ 57.2 $ 47.8 $ 65.7 $ 234.6 $ 1.2 $ 491.2 $ 114.6 $ 57.2 $ 47.8 $ 65.7 $ 235.8 $ 0.7 — — — 0.1 — $ 1,010.3 — 2.0 — $ 1,012.3 $ 12.0 $ 0.1 $ 12.1 $ 7.1 $ 9.7 $ 7.1 $ 0.2 — — 9.7 $ 7.1 $ 7.3 $ 4.7 $ 14.4 $ 0.1 0.4 4.8 $ 14.8 $ 328.1 $ 383.1 0.9 328.2 $ 384.0 0.1 $ 334.5 $ 187.9 $ 117.9 $ 73.8 $ 47.6 $ 42.6 $ 0.1 $ 334.6 $ 188.1 $ 118.0 $ 74.0 $ 47.7 $ 42.7 $ 0.2 0.1 0.2 0.1 0.1 $ 47.1 $ 29.4 $ 28.1 $ 11.9 $ 0.1 — $ 47.2 $ 29.4 $ 28.2 $ 11.9 $ 5.3 $ 8.6 $ 0.1 — — — 8.6 $ 5.3 $ — $ 804.3 — 0.8 — $ 805.1 19.9 $ 150.3 0.3 0.1 20.0 $ 150.6 The Company considers the performance of the loan portfolio and its impact on the allowance for credit loan losses. For certain credit card loan classes, the Company also evaluates credit quality based on the aging status of the loan, which was previously presented, and by payment activity. The following table presents the recorded investment in credit card loans based on payment activity: As of December 31, 2020 Credit Card: Performing Nonperforming Total Consumer Commercial Agricultural Total $ $ 69.6 $ 0.6 70.2 $ 66.3 $ 0.3 66.6 $ 1.5 $ — 1.5 $ 137.4 0.9 138.3 103 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) The following presents the recorded investment in the Company’s loans by risk grades and loan class as of the date shown below: As of December 31, 2019 Real estate: Commercial Construction: Land acquisition & development Residential Commercial Total construction loans Residential Agricultural Total real estate loans Consumer: Indirect consumer Direct consumer Credit card Total consumer loans Commercial Agricultural Total Other Assets Especially Mentioned Pass Substandard Doubtful Total Criticized Loans Total Loans $ 3,305.0 $ 84.7 $ 97.3 $ 0.8 $ 182.8 $ 3,487.8 295.4 241.0 428.3 964.7 1,235.4 185.7 5,690.8 781.5 177.7 81.6 1,040.8 1,569.4 247.8 8,548.8 $ $ 3.8 0.9 1.7 6.4 2.6 14.3 108.0 0.2 0.4 — 0.6 40.4 8.5 157.5 $ 1.9 2.2 1.5 5.6 7.8 26.6 137.3 2.9 0.8 — 3.7 60.3 22.7 224.0 $ 1.0 — — 1.0 0.3 — 2.1 — 0.1 — 0.1 3.6 0.1 5.9 $ 6.7 3.1 3.2 13.0 10.7 40.9 247.4 3.1 1.3 — 4.4 104.3 31.3 387.4 $ 302.1 244.1 431.5 977.7 1,246.1 226.6 5,938.2 784.6 179.0 81.6 1,045.2 1,673.7 279.1 8,936.2 There were no material purchases of portfolio loans and no material sales of loans held for investment during the three and nine months ended December 31, 2020 or 2019. Purchased Credit Deteriorated Loans The Company has purchased loans acquired in business combinations, for which there was, at acquisition, evidence of more than insignificant deterioration of credit quality since origination. See “Note 2 - Acquisitions” included in this report, for additional details. (7) PREMISES AND EQUIPMENT Premises and equipment and related accumulated depreciation are as follows: December 31, Land Buildings and improvements Furniture and equipment Total premises and equipment Less accumulated depreciation Premises and equipment, net 2020 2019 $ 52.9 $ 349.5 88.9 491.3 50.8 330.1 94.2 475.1 (179.0) (169.1) $ 312.3 $ 306.0 Depreciation expense was $25.8 million, $23.3 million, and $16.2 million for the years ended December 31, 2020, 2019, and 2018, respectively. The Parent Company and a FIB branch office lease premises from an affiliated entity. See Note 18—Commitments and Contingencies. 104 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) (8) COMPANY-OWNED LIFE INSURANCE Company-owned life insurance consists of the following: December 31, Key executive, principal shareholder Key executive split dollar Group life Total 2020 2019 $ $ 3.1 7.0 286.3 $ 296.4 $ 4.4 7.0 282.4 293.8 The Company maintains key executive life insurance policies on certain principal shareholders. Under these policies, the Company receives benefits payable upon the death of the insured. The net cash surrender value of key executive, principal shareholder insurance policies was $3.1 million and $4.4 million at December 31, 2020 and 2019, respectively. The Company also has life insurance policies covering selected other key officers. The net cash surrender value of these policies was $7.0 million at December 31, 2020 and 2019, respectively. Under these policies, the Company receives benefits payable upon death of the insured. An endorsement split dollar agreement has been executed with the selected key officers whereby a portion of the policy death benefit is payable to their designated beneficiaries. The endorsement split dollar agreement will provide post-retirement coverage for those selected key officers meeting specified retirement qualifications. The Company expenses the earned portion of the post-employment benefit through the vesting period. The Company has group life insurance policies covering selected officers of FIB. The net cash surrender value of these policies was $286.3 million and $282.4 million at December 31, 2020 and 2019, respectively. Under these policies, the Company receives benefits payable upon death of the insured. The Company has entered into either an endorsement split dollar agreement or a survivor income benefit agreement at the election of each insured officer. Under the endorsement split dollar agreements, a portion of the policy death benefit is payable to the insured’s designated beneficiary if the insured is employed by the Company at the time of death. Under the survivor income benefit agreements, the Company makes a lump-sum payment to the insured’s designated beneficiary if the insured is employed by the Company at the time of death. (9) OTHER REAL ESTATE OWNED Information with respect to the Company’s other real estate owned follows: Year Ended December 31, Balance at beginning of year OREO acquired through acquisitions Additions Capitalized improvements Valuation adjustments Dispositions Balance at end of year 2020 2019 2018 $ 8.5 — 3.3 — (0.1) (9.2) $ 14.4 $ 2.4 14.1 0.3 (0.9) (21.8) $ 2.5 $ 8.5 $ 10.1 0.6 12.1 — (0.1) (8.3) 14.4 Write-downs of $0.1 million, $0.9 million, and $0.1 million during 2020, 2019, and 2018, respectively, were adjustments based on internal evaluations and other sources, including management estimates of the current fair value of properties, and adjustments directly related to receipt of updated appraisals. The carrying value of foreclosed residential real estate properties included in other real estate owned was zero as of December 31, 2020 and $2.3 million as of December 31, 2019. The Company had recorded investments in consumer mortgage loans secured by residential real estate for which formal foreclosure proceedings were in process of foreclosure of $0.2 million and $0.4 million as of December 31, 2020 and December 31, 2019, respectively. 105 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) (10) DERIVATIVES AND HEDGING ACTIVITIES For asset and liability management purposes, the Company enters into interest rate swap contracts to hedge against changes in forecasted cash flows due to interest rate exposures. Interest rate swaps are contracts in which a series of interest payments are exchanged over a prescribed period. The notional amount upon which the interest payments are based is not exchanged. The amount exchanged is determined by reference to the notional amount and the other terms of the individual agreements. The swap agreements are derivative instruments and convert a portion of the Company’s forecasted variable rate debt to a fixed rate (i.e., cash flow hedge) over the payment term of the interest rate swap. The gain or loss on cash flow hedging instruments is initially reported as a component of other comprehensive income and subsequently reclassified into earnings in the same period during which the transaction affects earnings. The Company does not enter into interest rate swap agreements for trading or speculative purposes. Changes in the fair value of derivatives designated and that qualify as cash flow hedges is recorded in Accumulated Other Comprehensive Income and is subsequently reclassified into earnings in the period that the hedged forecasted transaction affects earnings. On May 1, 2020, the Company entered into three interest rate swap contracts that were designated as cash flow hedges. The contracts included a notional amount of $46.4 million, $36.1 million, and $5.1 million. The Company pays a fixed interest rate of 0.40%, 0.34%, and 0.40%, respectively, and the counterparty pays to the Company a variable interest rate equal to the three-month LIBOR under the terms of the interest rate swap contracts. No cash was exchanged until the effective date, which began on May 1, 2020 and ends on April 1, 2022, March 15, 2022, and March 30, 2022, respectively. The Company designated the interest payments related to the trust preferred securities as the cash flow hedge. The hedge was fully effective during the current period. The Company expects the hedge to remain highly effective during the remaining term of the interest rate swap. The Company also enters into certain interest rate swap contracts that are not designated as hedging instruments. These derivative contracts relate to transactions in which the Company enters into an interest rate swap with a client while at the same time entering into an offsetting interest rate swap with a third-party financial institution. Because the Company acts as an intermediary for the client, changes in the fair value of the underlying derivative contracts for the most part offset each other and do not significantly impact the Company’s results of operations. In the normal course of business, the Company enters into interest rate lock commitments to finance residential mortgage loans that are not designated as accounting hedges. These commitments, which contain fixed expiration dates, offer the borrower an interest rate guarantee, provided the loan meets underwriting guidelines and closes within the timeframe established by the Company. Interest rate risk arises on these commitments and subsequently closed loans if interest rates change between the time of the interest rate lock and the delivery of the loan to the investor. Loan commitments related to residential mortgage loans intended to be sold are considered derivatives and are marked to market through earnings. In addition to the effects of the change in market interest rate, the fair value measurement of the derivative also contemplates the expected cash flows to be received from the counterparty from the future sale of the loan. The Company sells residential mortgage loans on either a best efforts or mandatory delivery basis. The Company mitigates the effect of the interest rate risk inherent in providing interest rate lock commitments by entering into forward loan sales contracts. During the interest rate lock commitment period, these forward loan sales contracts are marked to market through earnings and are not designated as accounting hedges. Exclusive of the fair value component associated with the projected cash flows from the loan delivery to the investor, the changes in fair value related to movements in market rates of the interest rate lock commitments and the forward loan sales contracts generally move in opposite directions, and the net impact of changes in these valuations on net income during the loan commitment period is generally inconsequential. When the loan is funded to the borrower, the interest rate lock commitment derivative expires, and the Company records a loan held for sale. The forward loan sales contract acts as a hedge against the variability in cash to be received from the loan sale. The changes in measurement of the estimated fair values of the interest rate lock commitments and forward loan sales contracts are included in mortgage banking revenues in the accompanying consolidated statements of income. The notional amounts and estimated fair values of the Company’s derivatives are presented in the following table. Fair value estimates are obtained from third parties and are based on pricing models. 106 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) December 31, 2020 December 31, 2019 Notional Amount Estimated Fair Value Notional Amount Estimated Fair Value Derivative Assets (included in other assets on the consolidated balance sheets) Non-hedging interest rate derivatives: Interest rate swap contracts Interest rate lock commitments Total derivative assets $ $ 799.7 $ 101.9 901.6 $ 52.0 3.3 55.3 $ $ 503.2 $ 67.8 571.0 $ Derivative Liabilities (included in accounts payable and accrued expenses on the consolidated balance sheets) Derivatives designated as hedges: Interest rate swap contracts 87.6 $ — $ 0.2 $ $ Non-hedging interest rate derivatives: Interest rate swap contracts Forward loan sales contracts Total derivative liabilities 799.7 $ 126.8 1,014.1 $ $ 52.0 1.1 53.3 503.2 $ 128.0 631.2 $ $ 21.9 1.3 23.2 — 21.9 0.3 22.2 There were no material effects of derivative instruments in cash flow hedging relationships on the consolidated statements of income at December 31, 2020. Derivative assets and liabilities are recorded at fair value on the balance sheet and do not take into account the effects of master netting arrangements. Master netting arrangements allow the Company to settle all contracts held with a single counterparty on a net basis and to offset net contract position with related collateral where applicable. The following table illustrates the potential effect of the Company’s master netting arrangements, by type of financial instrument, on the Company’s consolidated balance sheets as of the periods indicated: December 31, 2020 Gross Amounts Recognized Gross Amounts Offset in the Balance Sheet Net Amounts in the Balance Sheet Financial Instruments Fair Value of Financial Collateral in the Balance Sheet Net Amount Financial Assets Interest rate swap contracts $ 52.0 $ — $ 52.0 $ — $ 17.2 $ Mortgage related derivatives Total derivatives Total assets Financial Liabilities 3.3 55.3 — — 3.3 55.3 — — — 17.2 $ 55.3 $ — $ 55.3 $ — $ 17.2 $ Interest rate swap contracts $ 52.2 $ — $ 52.2 $ — $ — $ Mortgage related derivatives Total derivatives Repurchase agreements 1.1 53.3 1,091.4 — — 1.1 53.3 1,091.4 — — — — — 1,091.4 Total liabilities $ 1,144.7 $ — $ 1,144.7 $ — $ 1,091.4 $ 34.8 3.3 38.1 38.1 52.2 1.1 53.3 — 53.3 107 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) December 31, 2019 Gross Amounts Recognized Gross Amounts Offset in the Balance Sheet Net Amounts in the Balance Sheet Financial Instruments Fair Value of Financial Collateral in the Balance Sheet Net Amount Financial Assets Interest rate swap contracts $ 21.9 $ — $ 21.9 $ 0.1 $ 18.0 $ Mortgage related derivatives Total derivatives Total assets Financial Liabilities 1.3 23.2 — — 1.3 23.2 — 0.1 — 18.0 $ 23.2 $ — $ 23.2 $ 0.1 $ 18.0 $ Interest rate swap contracts $ 21.9 $ — $ 21.9 $ 0.1 $ — $ Mortgage related derivatives Total derivatives Repurchase agreements 0.3 22.2 697.6 — — — 0.3 22.2 697.6 — 0.1 — — — 697.6 Total liabilities $ 719.8 $ — $ 719.8 $ 0.1 $ 697.6 $ 3.8 1.3 5.1 5.1 21.8 0.3 22.1 — 22.1 The following table presents the pre-tax gains or losses related to derivative contracts that were recorded in accumulated other comprehensive income and other non-interest income in the Company’s statements of income: As of or For The Year Ended December 31, Derivatives designated as hedges: 2020 2019 2018 Amount of loss recognized in other comprehensive income (effective portion) Reclassification adjustment for derivative net gain included in income $ (0.1) $ (0.1) Non-hedging interest rate derivatives: Amount of gain recognized in other non-interest income Amount of net fee income recognized in other non-interest income Amount of net gains (losses) recognized in mortgage banking revenues — 7.7 1.2 $ $ — $ — — 2.5 0.3 $ — — 0.3 1.3 (0.5) (11) MORTGAGE SERVICING RIGHTS Information with respect to the Company’s mortgage servicing rights follows: Year Ended December 31, Balance at beginning of year Originations of mortgage servicing rights Amortization expense Balance at end of year Less valuation reserve Balance at end of year, net of valuation reserve Principal balance of serviced loans underlying mortgage servicing rights Mortgage servicing rights as a percentage of serviced loans 2020 2019 2018 $ $ $ 30.6 11.7 (8.0) 34.3 (10.3) 24.0 3,585.5 0.67 % $ $ $ 27.7 7.3 (4.4) 30.6 (0.4) 30.2 3,710.1 0.81 % $ $ $ 24.8 6.0 (3.1) 27.7 — 27.7 3,698.2 0.75 % At December 31, 2020, the estimated fair value and weighted average remaining life of the Company’s mortgage servicing rights were $24.0 million and 3.9 years, respectively. The fair value of mortgage servicing rights was determined using discount rates ranging from 8.3% to 10.0% and monthly prepayment speeds ranging from 1.2% to 2.5% depending upon the risk characteristics of the underlying loans. At December 31, 2019, the estimated fair value and weighted average remaining life of the Company’s mortgage servicing rights were $34.8 million and 6.0 years, respectively. The fair value of mortgage servicing rights was determined using discount rates ranging from 9.3% to 11.0% and monthly prepayment speeds ranging from 0.6% to 1.5% depending upon the risk characteristics of the underlying loans. There were no material impairments reversed in 2020, 2019 and 2018, respectively. No permanent impairment was recorded in 2020, 2019, or 2018. 108 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) (12) DEPOSITS Deposits are summarized as follows: December 31, Non-interest bearing demand Interest bearing: Demand Savings Time, $100 and over Time, other Total interest bearing Total deposits 2020 2019 $ 4,633.5 $ 3,426.5 4,118.9 4,405.9 419.3 639.4 9,583.5 3,195.4 3,591.6 651.1 798.9 8,237.0 $ 14,217.0 $ 11,663.5 Other time deposits include zero and $2.9 million brokered deposits as of December 31, 2020 and 2019, respectively, and deposits obtained through the Company’s participation in the Certificate of Deposit Account Registry Service (“CDARS”). CDARS deposits totaled $97.3 million and $117.7 million as of December 31, 2020 and 2019, respectively. As of December 31, 2020 and 2019, the Company had time deposits of $193.0 million and $278.4 million, respectively, that met or exceeded the FDIC insurance limit of $250,000. Maturities of time deposits at December 31, 2020 are as follows: Due within 3 months or less Due after 3 months and within 6 months Due after 6 months and within 12 months Due within 2022 Due within 2023 Due within 2024 Due within 2025 and thereafter Total Time, $100 and Over Total Time $ $ 65.8 77.2 173.0 81.7 7.3 4.0 10.3 419.3 $ $ 271.1 190.8 355.5 171.1 30.0 15.2 25.0 1,058.7 Interest expense on time deposits of $100 and over was $6.5 million, $11.5 million, and $5.0 million for the years ended December 31, 2020, 2019, and 2018, respectively. (13) LONG-TERM DEBT AND OTHER BORROWED FUNDS A summary of long-term debt follows: December 31, 2020 2019 Parent Company: Fixed to floating subordinated notes, 5.25% fixed rate effective May 2020 through May 2025 $ 98.6 $ Subsidiaries: 8.00% finance lease obligation with term ending October 25, 2029 2.28% note payable maturing July 29, 2022, principal due at maturity, interest payable monthly 1.00% note payable maturing December 31, 2041, interest only payable quarterly until December 31, 2025 and then principal and interest until maturity Note payable maturing March 31, 2038, interest only payable at 1.30% monthly until March 31, 2025 and then principal and interest at 3.25% until maturity 1.30% note payable maturing June 1, 2034, interest only payable monthly until March 31, 2025 and then principal and interest until maturity 1.1 5.0 5.1 2.0 0.6 Total long-term debt $ 112.4 $ — 1.2 5.0 5.1 2.0 0.6 13.9 109 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) Maturities of long-term debt at December 31, 2020 were as follows: 2021 2022 2023 2024 2025 Thereafter Total $ $ 0.1 5.2 0.1 0.1 0.1 106.8 112.4 The Company has available lines of credit with the FHLB of approximately $1,697.5 million, subject to collateral availability. As of December 31, 2020 and 2019, there were no long or short-term advances outstanding with the FHLB. The Company has a financing lease obligation on a banking office. Assets acquired under the financing lease, consist solely of a building and leasehold improvements, and are included in premises and equipment subject to depreciation. On May 15, 2020, the Company completed a public offering of $100.0 million fixed-to-floating rate subordinated notes due May 15, 2030 (the “Notes”). The debt is included in Tier 2 capital for the Company. The Company may elect to redeem the Notes, in whole or in part, on any early redemption date which is any interest payment date on or after May 15, 2025 at a redemption price equal to 100% of the principal amount plus any accrued and unpaid interest. The Company may also redeem the Notes, in whole but not in part, upon certain conditions as defined in the indenture agreement. Any early redemption of the Notes will be subject to regulatory approval. From and including the date of issuance to, but excluding, May 15, 2025, or earlier redemption date, the Notes bear interest at an initial fixed rate of 5.25% per annum, payable semi-annually in arrears on May 15 and November 15 of each year, which commenced on November 15, 2020. From and including May 15, 2025 to, but excluding, May 15, 2025, or earlier redemption date, the Notes will bear interest at a floating rate per annum equal to a benchmark rate, which is expected to be Three-Month Term SOFR (as defined in the Indenture Agreement), plus 518.0 basis points, payable quarterly in arrears on February 15, May 15, August 15 and November 15 of each year, commencing on August 15, 2025. Unamortized debt issuance costs of $1.4 million are being amortized to maturity. Subordinated debt is presented net of issuance costs on the consolidated balance sheet. The Notes are unsecured, subordinated obligations of the Company and: (i) rank junior to all of the Company’s existing and future senior indebtedness; (ii) rank equal in right of payment with any of the Company’s existing and future subordinated indebtedness; (iii) rank senior to the Company’s obligations relating to any junior subordinated debt securities issued to its capital trust subsidiaries; (iv) are effectively subordinated to all of the Company’s secured indebtedness to the extent of the value of the assets securing such indebtedness; and (v) are structurally subordinated to all of the existing and future liabilities and obligations of the Company’s subsidiaries, including deposit liabilities and claims of other creditors of the Company’s bank subsidiary, First Interstate Bank. Proceeds from the private placement of subordinated notes were used for general corporate purposes. Additionally, the Company borrowed or assumed through acquisitions $12.6 million as of December 31, 2020 and 2019, related to New Market Tax Credits. The long-term debt obligations consists of fixed rate note payables with various interest rates from 1.00% to 3.25% and maturities from July 29, 2022 through December 31, 2041, collateralized by the Company’s equity interest in various CDEs, which are 99.9% owned by the Company. As of December 31, 2020 and 2019, the Company had no material other borrowed funds. The Company has federal funds lines of credit with third parties amounting to $205.0 million, subject to funds availability. These lines are subject to cancellation without notice. The Company also has a line of credit with the Federal Reserve Bank for borrowings up to $478.6 million secured by a blanket pledge of indirect consumer loans, and has an unused $50.0 million revolving line of credit with U.S. Bank National Association. 110 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) (14) SUBORDINATED DEBENTURES HELD BY SUBSIDIARY TRUSTS The Company sponsors seven wholly-owned business trusts, Trust I, Trust II, Trust III, Trust IV, Trust V, Trust VI, and Trust VII (collectively, the “Trusts”). The Trusts were formed for the exclusive purpose of issuing an aggregate of $84.4 million of 30-year floating rate mandatorily redeemable capital trust preferred securities (“Trust Preferred Securities”) to third-party investors. The Trusts also issued, in aggregate, $2.6 million of common equity securities to the Parent Company. Proceeds from the issuance of the Trust Preferred Securities and common equity securities were invested in 30-year junior subordinated deferrable interest debentures (“Subordinated Debentures”) issued by the Parent Company. A summary of Subordinated Debenture issuances follows: Issuance October 2007 November 2007 December 2007 December 2007 January 2008 January 2008 June 2005 Maturity Date January 1, 2038 December 15, 2037 December 15, 2037 April 1, 2038 April 1, 2038 April 1, 2038 June 30, 2035 Total subordinated debentures held by subsidiary trusts Principal Amount Outstanding as of December 31, 2020 2019 $ $ 10.3 15.5 20.6 15.5 10.3 10.3 4.5 87.0 $ $ 10.3 15.5 20.6 15.5 10.3 10.3 4.4 86.9 In October 2007, the Company issued $10.3 million of Subordinated Debentures to Trust II. The Subordinated Debentures bear a cumulative floating interest rate equal to LIBOR plus 2.25% per annum. As of December 31, 2020, the interest rate on the Subordinated Debentures was 2.48%. In November 2007, the Company issued $15.5 million of Subordinated Debentures to Trust I. The Subordinated Debentures bore interest at a fixed rate of 7.50% for five years after issuance until December 16, 2012, and thereafter at a variable rate equal to LIBOR plus 2.75% per annum. As of December 31, 2020, the interest rate on the Subordinated Debentures was 2.97%. In December 2007, the Company issued $20.6 million of Subordinated Debentures to Trust III. The Subordinated Debentures bore interest at a fixed rate of 6.88% for five years after issuance until December 15, 2012, and thereafter at a variable rate equal to LIBOR plus 2.40% per annum. As of December 31, 2020, the interest rate on the Subordinated Debentures was 2.62%. In December 2007, the Company issued $15.5 million of Subordinated Debentures to Trust IV. The Subordinated Debentures bear a cumulative floating interest rate equal to LIBOR plus 2.70% per annum. As of December 31, 2020 the interest rate on the Subordinated Debentures was 2.93%. In January 2008, the Company issued $10.3 million of Subordinated Debentures to Trust V. The Subordinated Debentures bore interest at a fixed rate of 6.78% for five years after issuance until April 1, 2013, and thereafter at a variable rate equal to LIBOR plus 2.75% per annum. As of December 31, 2020 the interest rate on the Subordinated Debentures was 2.98%. In January 2008, the Company issued $10.3 million of Subordinated Debentures to Trust VI. The Subordinated Debentures bear a cumulative floating interest rate equal to LIBOR plus 2.75% per annum. As of December 31, 2020, the interest rate on the Subordinated Debentures was 2.98%. In conjunction with the acquisition of Northwest in August 2018, the Company acquired Northwest Bancorporation Capital Trust I (“Trust VII”). The Northwest Trust was formed for the exclusive purpose of issuing an aggregate of $5.0 million of 30-year floating rate mandatorily redeemable capital trust preferred securities (“Northwest Trust Preferred Securities”) to third-party investors. The Trusts also issued, in aggregate, $0.2 million of common equity securities to Northwest. Proceeds from the issuance of the Trust Preferred Securities and common equity securities were invested in 30-year junior subordinated deferrable interest debentures (“Northwest Subordinated Debentures”) 111 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) issued by Northwest. The Subordinated Debentures bore interest at a fixed rate of 5.95% for five years after issuance until June 30, 2010, and thereafter at a variable rate equal to LIBOR plus 1.70% per annum. As of December 31, 2020 the interest rate on the Subordinated Debentures was 1.94%. The Subordinated Debentures are unsecured with interest distributions payable quarterly. The Company may defer the payment of interest at any time provided that the deferral period does not extend past the stated maturity. During any such deferral period, distributions on the Trust Preferred Securities will also be deferred and the Company’s ability to pay dividends on its common and preferred shares is restricted. The Subordinated Debentures may be redeemed, subject to approval by the Federal Reserve Bank, at the Company’s option on or after five years from the date of issue, or at any time in the event of unfavorable changes in laws or regulations. Debt issuance costs consisting primarily of underwriting discounts and professional fees were capitalized and are being amortized through maturity to interest expense using the straight-line method, which approximates level yield. The terms of the Trust Preferred Securities are identical to those of the Subordinated Debentures. The Trust Preferred Securities are subject to mandatory redemption upon repayment of the Subordinated Debentures at their stated maturity dates or earlier redemption in an amount equal to their liquidation amount plus accumulated and unpaid distributions to the date of redemption. The Company guarantees the payment of distributions and payments for redemption or liquidation of the Trust Preferred Securities to the extent of funds held by the Trusts. Subject to certain limitations, the Trust Preferred Securities qualify as tier 1 capital of the Parent Company under the Federal Reserve Board’s capital adequacy guidelines. Proceeds from the issuance of the Trust Preferred Securities were used to fund acquisitions. (15) CAPITAL STOCK AND DIVIDEND RESTRICTIONS The Company’s authorized common stock consists of 200,000,000 shares, of which, 100,000,000 shares are designated as Class A common stock and 100,000,000 are designated as Class B common stock. The Class A common stock has one vote per share. The Class B common stock has five votes per share and is convertible to Class A common stock on a share-for-share basis at any time. The Company had 40,335,113 shares of Class A common stock and 21,760,686 shares of Class B common stock outstanding as of December 31, 2020. The Company had 43,129,085 shares of Class A common stock and 22,117,254 shares of Class B common stock outstanding as of December 31, 2019. During 2020, the Company issued 19,491 shares of its Class A common stock with an aggregate value of $0.6 million to directors for their service on the Company’s board of directors during 2020. During 2019, the Company issued 22,417 shares of its Class A common stock with an aggregate value of $0.8 million to directors for their service on the Company’s board of directors during 2019. The aggregate value of the shares issued to directors is included in stock-based compensation expense in the accompanying consolidated statements of changes in stockholders’ equity. On June 11, 2019, the Company’s board of directors adopted a stock repurchase program permitting the Company to repurchase up to 2.5 million of its outstanding shares of Class A common stock. On March 23, 2020, the Company’s board of directors suspended stock repurchases in response to the COVID-19 pandemic. Effective August 24, 2020, the Company’s board of directors lifted the temporary suspension of the Company’s stock repurchase program. On September 12, 2020, the Company’s board of directors increased the number of shares of Class A common stock authorized to be repurchased by the Company under the stock repurchase program by an additional 3.0 million shares bringing the total number of shares authorized under the program to 5.5 million shares. During 2020, the Company repurchased and retired 3,538,142 shares of Class A common stock under the stock repurchase program. All other stock repurchases during 2020 and 2019 were redemptions of vested restricted shares tendered in lieu of cash for payment of income tax withholding amounts by participants in the Company’s equity compensation plans. On April 8, 2019, the Company issued 3,871,422 and 463,134 shares of its Class A common stock with an aggregate value of $157.3 million and $18.8 million as consideration for the acquisitions of IIBK and CMYF, respectively. 112 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) On March 16, 2020, the Company filed a universal shelf registration statement on Form S-3, which was subsequently declared effective by the SEC. The shelf registration statement allows the Company to raise additional capital from time to time through offers and sales of registered securities consisting of debt securities, preferred stock, depository shares, common stock, warrants, purchase contracts, and units or units consisting of any combination of the foregoing securities. The Company may sell these securities using the prospectus in the shelf registration statement, together with applicable prospectus supplements, from time to time, in one or more offerings. The payment of dividends by subsidiary banks is subject to various federal and state regulatory limitations. In general, a bank is limited, without the prior consent of its regulators, to paying dividends that do not exceed current year net profits together with retained earnings from the two preceding calendar years. The Company’s debt instruments also include limitations on the payment of dividends. (16) EARNINGS PER COMMON SHARE Basic earnings per common share is calculated by dividing net income by the weighted average number of common shares outstanding during the period presented, excluding unvested restricted stock. Diluted earnings per share is calculated by dividing net income by the weighted average number of common shares determined for the basic earnings per share computation plus the dilutive effects of stock-based compensation using the treasury stock method. The following table sets forth the computation of basic and diluted earnings per common share: Year Ended December 31, Net income, basic and diluted Weighted average common shares outstanding for basic earnings per share computation Dilutive effects of stock-based compensation Weighted average common shares outstanding for diluted earnings per common share computation Basic earnings per common share Diluted earnings per common share 2020 2019 2018 $ 161.2 $ 181.0 $ 160.2 63,611,891 117,579 63,645,029 239,839 57,778,857 438,266 63,729,470 63,884,868 58,217,123 $ $ 2.53 2.53 $ 2.84 2.83 2.77 2.75 The Company had 3,094, 150, and 448 unvested time restricted stock outstanding as of December 31, 2020, 2019, and 2018 respectively, that were not included in the computation of diluted earnings per common share because their effect would be anti-dilutive. The Company had 291,540, 138,298, and 83,475 shares of unvested restricted stock as of December 31, 2020, 2019, and 2018, respectively, that were not included in the computation of diluted earnings per common share because performance conditions for vesting had not been met. (17) REGULATORY CAPITAL The Company and the Bank are subject to various regulatory capital requirements administered by federal banking regulators and the Federal Reserve. Failure to meet minimum capital requirements can initiate certain mandatory and possibly additional discretionary actions by regulators that, if undertaken, could have a direct material effect on the Company’s and the Bank’s financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Company and the Bank must meet specific capital guidelines that involve quantitative measures of the Company’s and Bank’s assets, liabilities and certain off-balance sheet items as calculated under regulatory accounting practices. The Parent Company, like all bank holding companies, is not subject to the prompt corrective action provisions. The Company’s and the Bank’s capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings and other factors. Quantitative measures established by regulation to ensure capital adequacy require the Company to maintain minimum amounts and ratios of total and tier 1 capital to risk-weighted assets, and of tier 1 capital to average assets, as defined in the regulations. As of December 31, 2020, the Company exceeded all capital adequacy requirements to which it is subject. 113 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) As of December 31, 2020, the most recent notification from the regulatory agencies categorized the Bank as well capitalized under the regulatory framework for prompt corrective action. To be categorized as well-capitalized, the institution must maintain minimum total risk-based, Tier 1 risk-based, and Tier 1 leverage ratios as set forth in the following table. There are no conditions or events since the most recent notification that management believes have changed the Bank's categories. As an approved mortgage seller, the Bank is required to maintain a minimum level of capital specified by the United States Department of Housing and Urban Development. At December 31, 2020 and 2019, the Bank met these requirements. The Company’s actual capital amounts and ratios and selected minimum regulatory thresholds and prompt corrective action provisions as of December 31, 2020 and 2019 are presented in the following tables: Actual Amount Ratio Minimum Required for Capital Adequacy Purposes Ratio Amount For Capital Adequacy Purposes Plus Capital Conservation Buffer Amount Ratio Minimum to Be Well Capitalized Under Prompt Corrective Action Requirements (1) Amount Ratio $ 1,575.7 1,426.8 14.19 $ 888.3 885.6 12.89 8.00 % $ 1,165.8 1,162.3 8.00 10.50 % $ 1,110.3 1,107.0 10.50 10.00 % 10.00 December 31, 2020 Total risk-based capital: Consolidated FIB Tier 1 risk-based capital: Consolidated FIB 1,369.0 1,320.1 12.33 11.93 666.2 664.2 6.00 6.00 943.8 940.9 8.50 8.50 Common equity tier 1 risk- based capital: Consolidated FIB Leverage capital ratio: Consolidated FIB 1,284.9 1,320.1 11.57 11.93 1,369.0 1,320.1 8.16 7.88 499.6 498.1 671.0 669.7 4.50 4.50 4.00 4.00 777.2 774.9 671.0 669.7 7.00 7.00 4.00 4.00 888.3 885.6 721.7 719.5 838.7 837.2 8.00 8.00 6.50 6.50 5.00 5.00 (1) The ratios for the well capitalized requirement are only applicable to FIB. However, the Company manages its capital position as if the requirement applies to the consolidated entity and has presented the ratios as if they also applied on a consolidated basis. In connection with the adoption of CECL, or ASC 326, the Company recognized an after-tax cumulative effect reduction to retained earnings totaling $24.1 million. In March 2020, the Office of the Comptroller of Currency, the Board of Governors of the Federal Reserve System, and the FDIC issued an interim final rule that allows banking organizations to mitigate the effects of ASC 326 on their regulatory capital computations. This interim rule is in addition to the three-year transition period already in place under the capital transition rule previously issued in February 2019. Banking organizations can elect to mitigate the estimated cumulative regulatory capital effects for an additional two years. This rule allows an institution to defer transitioning the impact of ASC 326 into its regulatory capital calculation, including ratios, over an extended period. Additionally, the interim rule extends the transition period whereby an institution can defer the impact from ASC 326 on the current period, determined based on the difference between the new ASC 326 allowance for credit losses and the allowance for loan losses under the incurred loss method from previous GAAP, for up to two years. The total impact related to ASC 326 would then be transitioned into regulatory capital and the associated ratios over a three-year transition period, beginning after the initial two-year deferral period, for a total transition period of five years. The Company has elected to opt into the transition election and is adopting transition relief over the permissible five-year period. 114 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) Minimum Required for Capital Adequacy Purposes For Capital Adequacy Purposes Plus Capital Conservation Buffer Minimum to Be Well Capitalized Under Prompt Corrective Action Requirements (1) Actual December 31, 2019 Amount Ratio Amount Ratio Amount Ratio Amount Ratio Total risk-based capital: Consolidated FIB $ 1,495.3 1,321.4 14.10 % $ 848.5 845.8 12.50 8.00 % $ 1,113.6 1,110.1 8.00 10.50 % $ 1,060.6 1,057.2 10.50 10.00 % 10.00 Tier 1 risk-based capital: Consolidated FIB 1,422.3 1,248.4 13.41 11.81 636.3 634.3 6.00 6.00 901.5 898.6 8.50 8.50 Common equity tier 1 risk- based capital: Consolidated FIB Leverage capital ratio: 1,338.2 1,248.4 12.62 11.81 Consolidated FIB 1,422.3 1,248.4 10.13 8.91 477.3 475.7 561.6 560.4 4.50 4.50 4.00 4.00 742.4 740.0 561.6 560.4 7.00 7.00 4.00 4.00 848.5 845.8 689.4 687.2 702.0 700.4 8.00 8.00 6.50 6.50 5.00 5.00 (1) The ratios for the well capitalized requirement are only applicable to FIB. However, the Company manages its capital position as if the requirement applies to the consolidated entity and has presented the ratios as if they also applied on a consolidated basis. (18) COMMITMENTS AND CONTINGENCIES The Company had commitments under construction contracts of $4.6 million as of December 31, 2020. The Parent Company and the Billings office of FIB are the anchor tenants in a building owned by an entity in which FIB has a 50.0% ownership interest. The Company leases certain premises and equipment from third parties under operating leases. Total rental expense to third parties was $5.1 million, $4.8 million, and $3.2 million, in 2020, 2019, and 2018, respectively. The total future minimum rental commitments, exclusive of maintenance and operating costs, required under operating leases that have initial or remaining noncancelable lease terms in excess of one year at December 31, 2020, are as follows: For the year ending December 31: 2021 2022 2023 2024 2025 Thereafter Total Third Parties Related Entity Total $ $ 5.6 5.2 4.0 3.5 3.1 13.4 34.8 $ $ 1.4 1.4 1.1 1.0 1.0 2.0 7.9 $ $ 7.0 6.6 5.1 4.5 4.1 15.4 42.7 Residential mortgage loans sold to investors in the secondary market are sold with varying recourse provisions. Essentially all the loan sales agreements require the repurchase of a mortgage loan by the seller in situations such as breach of representation, warranty, or covenant; untimely document delivery; false or misleading statements; failure to obtain certain certificates or insurance; or unmarketability. Certain loan sales agreements contain repurchase requirements based on payment-related defects that are defined in terms of the number of days or months since the purchase, the sequence number of the payment, and/or the number of days of payment delinquency. Based on the specific terms stated in the agreements, the Company had $0.6 million and $0.9 million of sold residential mortgage loans with recourse provisions still in effect as of December 31, 2020 and 2019, respectively. 115 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) The Company did not repurchase any significant amount of loans from secondary market investors under the terms of loan sales agreements during the years ended December 31, 2020, 2019 and 2018. In the opinion of management, the risk of recourse and the subsequent requirement of loan repurchase to the Company is not significant, and accordingly no liabilities have been established related to such. In addition, the Company made various representations and warranties associated with the sale of loans. The Company has not incurred significant losses resulting from these provisions. A substantial portion of the Company’s clients’ ability to honor their contracts is dependent on the economy in Idaho, Montana, Oregon, South Dakota, Washington, and Wyoming. The Company’s loan portfolio is diversified and assigned to risk classifications by industry concentrations and the current economic conditions. These industry concentrations of credit are taken into consideration by management in determining the allowance for credit losses. In the normal course of business, the Company is involved in various other claims and litigation. In the opinion of management, following consultation with legal counsel, the ultimate liability or disposition thereof is not expected to have a material adverse effect on the consolidated financial condition, results of operations, or liquidity of the Company. (19) FINANCIAL INSTRUMENTS WITH OFF-BALANCE SHEET RISK The Company is a party to financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of its clients. These financial instruments include commitments to extend credit and standby letters of credit. These instruments involve, to varying degrees, elements of credit and interest rate risk in excess of amounts recorded in the consolidated balance sheets. Commitments to extend credit are agreements to lend to a client as long as there is no violation of any condition established in the commitment contract. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. Standby letters of credit are conditional commitments issued by the Company to guarantee the performance of a client to a third party. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loan facilities to clients. The Company’s policy for obtaining collateral, and the nature of such collateral, is essentially the same as that involved in making commitments to extend credit. The estimated fair value of the obligation undertaken by the Company in issuing standby letters of credit is included in accounts payable and accrued expenses in the Company’s consolidated balance sheets. The following table presents our financial instruments with off-balance sheet risk, as well as the activity in the allowance for off-balance sheet credit losses related to those financial instruments not considered unconditionally cancellable: Beginning balance Initial impact of adopting ASC 326 Provision for credit loss expense Ending balance of allowance for off-balance sheet credit losses Unused credit card lines* Commitments to extend credit* Standby letter of credit December 31, 2020 December 31, 2019 $ $ — 2.3 1.4 3.7 $ $ — — — — December 31, 2020 December 31, 2019 $ $ 682.8 2,280.0 59.0 671.8 2,067.0 42.7 * In conjunction with the adoption of ASC 326, the Company presented the December 31, 2019 balances to conform to the December 30, 2020 presentation. 116 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) (20) INCOME TAXES Income tax expense consists of the following: Year ended December 31, Current: Federal State Total current Deferred: Federal State Total deferred Total income tax expense 2020 2019 2018 $ $ 42.4 12.3 54.7 (5.7) (0.9) (6.6) 48.1 $ $ 40.5 8.2 48.7 3.7 1.7 5.4 54.1 $ $ 23.1 7.2 30.3 12.3 3.5 15.8 46.1 Total income tax provision differs from the amount of income tax determined by applying the statutory federal income tax rate of 21% for the periods presented to income before income taxes due to the following: 2020 2019 2018 $ 44.0 $ 49.4 $ 43.3 (2.1) 9.0 (0.4) (2.3) (0.1) 48.1 $ (2.8) 9.9 (1.2) (2.0) 0.8 54.1 $ (2.8) 8.5 (1.1) (2.6) 0.8 46.1 Year ended December 31, Tax expense at the statutory tax rate Increase (decrease) in tax resulting from: Tax-exempt income State income tax, net of federal income tax benefit Benefit of stock-based compensation plans Federal tax credits Other, net Tax expense at effective tax rate $ 117 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) The tax effects of temporary differences between the financial statement carrying amounts and tax bases of assets and liabilities that give rise to significant portions of the net deferred tax asset (liability) relate to the following: December 31, Deferred tax assets: Loans, principally due to allowance for credit losses Loan discount Deferred compensation Non-performing loan interest Other real estate owned write-downs and carrying costs Tax credit carryforwards Net operating loss carryforwards (1) Lease liabilities Other Deferred tax assets Deferred tax liabilities: Fixed assets, principally differences in bases and depreciation Deferred loan costs Investment securities, unrealized gains Investment in joint venture partnership, principally due to differences in depreciation of partnership assets Right of use assets Prepaid amounts Government agency stock dividends Goodwill and core deposit intangibles Mortgage servicing rights Other Deferred tax liabilities $ 2020 2019 $ 36.5 4.0 19.5 1.2 — — 2.0 9.5 3.2 75.9 (10.9) (4.4) (19.2) 18.1 7.2 18.1 1.0 0.1 0.2 2.6 9.9 0.9 58.1 (8.8) (2.8) (3.9) (0.9) (9.2) (0.5) (1.2) (50.3) (5.6) (0.9) (103.1) (27.2) (0.7) (9.7) (0.5) (1.2) (49.2) (7.2) (0.8) (84.8) (26.7) Net deferred tax assets (liabilities) (1) As of December 31, 2020, we had remaining federal net operating loss carryforwards of $3.4 million from acquired companies, which is available to offset federal taxable income and state net operating loss carryforwards in amounts which vary by state. The federal net operating losses will expire beginning in 2030 and ending in 2036 and the state net operating losses will expire beginning in 2023 and ending in 2034. The use of these carryforwards is subject to annual limitations. $ $ The Company had current net income tax receivables of $8.1 million and $6.1 million at December 31, 2020 and 2019, respectively. (21) STOCK-BASED COMPENSATION The Company has equity awards outstanding under two stock-based compensation plans; the 2015 Equity Incentive Plan (the “2015 Plan”) and the 2006 Equity Compensation Plan, as amended and restated (the “2006 Plan”). These plans were primarily established to enhance the Company’s ability to attract, retain and motivate employees. The Company’s Board of Directors or, upon delegation, the Compensation Committee of the Board of Directors (“Compensation Committee”) has exclusive authority to select employees, advisors and others, including directors, to receive awards and to establish the terms and conditions of each award made pursuant to the Company’s stock- based compensation plans. The 2015 Plan, approved by the Company’s shareholders in May 2015, was established to provide the Company with flexibility to select from various equity-based performance compensation methods, and to be able to address changing accounting and tax rules and corporate governance practices by optimally utilizing performance based compensation. The 2015 Plan did not increase the number of shares of common stock available for awards under the 2006 Plan. 118 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) The 2006 Plan, approved by the Company’s shareholders in May 2006 and May 2014, was established to consolidate into one plan the benefits available under all other than existing share-based award plans. The 2006 Plan continues with respect to awards made prior to June 2015. All shares of common stock available for future grant under the 2006 Plan were transferred into the 2015 Plan. At December 31, 2020, there were 1,141,186 common shares available for future grant under the 2015 Plan. Stock Options. All options granted have an exercise price equal to fair market value, which is currently defined as the closing sales price for the stock as quoted on the NASDAQ Stock Market for the last market trading day preceding the date that the Company’s Board of Directors awards the benefit. Options may be subject to vesting as determined by the Company’s Board of Directors or Compensation Committee, and can be exercised for periods of up to ten years from the date of grant. No stock option awards were granted in 2020 or 2019. All outstanding stock option awards were fully vested as of December 31, 2016. As such, there was no compensation expense or related income tax benefits recognized related to stock option awards in 2020 or 2019. Compensation expense related to stock option awards and the related income tax benefits for the year ended December 31, 2016 were not considered material. The following table summarizes Class A and Class B stock option activity under the Company’s active stock option plans: Year Ended December 31, 2020 Outstanding options, beginning of year Granted Exercised Forfeited Expired Weighted-Average Remaining Contract Life Number of Shares 221,197 $ — (139,795) (2,084) — Weighted- Average Exercise Price 15.33 — 15.80 16.35 — Outstanding options, end of year Outstanding options exercisable, end of year 79,318 $ 79,318 $ 14.49 14.49 0.83 0.83 The total intrinsic value of fully-vested stock options outstanding as of December 31, 2020 was $2.1 million. The total intrinsic value of options exercised was $3.1 million, $4.9 million, and $4.9 million during the years ended December 31, 2020, 2019, and 2018, respectively. The actual tax benefit realized for the tax deduction from option exercises totaled $0.5 million, $0.9 million, and $0.9 million for the years ended December 31, 2020, 2019 and 2018, respectively. The Company received cash of $1.1 million, $1.0 million, and $1.8 million from stock option exercises during the years ended December 31, 2020, 2019, and 2018, respectively. The Company redeemed common stock with aggregate values of $1.0 million, $2.0 million, and $1.6 million tendered in payment for stock option exercises during the years ended December 31, 2020, 2019, and 2018, respectively. Restricted Stock Awards. Common stock issued under the Company’s restricted stock plan may not be sold or otherwise transferred until restrictions have lapsed or performance objectives have been obtained. During the vesting periods, participants have voting rights and receive dividends on all time restricted shares and vesting performance restricted shares. Upon termination of employment, common shares upon which restrictions have not lapsed must be returned to the Company. All restricted share awards are classified as equity awards. The fair value of equity-classified restricted stock awards is amortized as compensation expense on a straight-line basis over the period restrictions lapse or performance goals are met. Compensation expense related to restricted stock awards of $7.5 million, $8.0 million and $5.6 million was included in benefits on the Company’s consolidated statements of income for the years ended December 31, 2020, 2019 and 2018, respectively. Related income tax expense of $0.1 million was recognized for the year ended December 31, 2020 and related income tax benefit of $0.4 million and $0.2 million were recognized for the years ended December 31, 2019 and 2018, respectively. 119 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) The following table presents information regarding the Company’s restricted stock: As of December 31, 2020 Restricted stock, beginning of year Granted Vested Forfeited Canceled Restricted stock, end of year Number of Shares Weighted-Average Measurement Date Fair Value 363,022 $ 332,085 (135,366) (34,912) — 524,829 $ 41.47 28.56 40.11 35.50 — 33.65 During 2020, the Company issued 332,085 restricted common shares. The 2020 restricted share awards included 1,352 additional shares related to the 2017 performance restricted stock grants and 196,278 performance restricted shares, of which 98,139 vest in varying percentages upon achievement of defined return on equity performance goals, and 98,139 vest in varying percentages upon achievement of defined total return to shareholder goals. Vesting of the 2020 performance restricted shares is also contingent on employment as of March 15, 2023. Additionally, 134,455 time-restricted shares were issued during 2020 that vest one-third on each annual anniversary of the grant date through February 15, 2023, contingent on continued employment through the vesting date. As of December 31, 2020, there was $9.5 million of unrecognized compensation cost related to non-vested, restricted stock awards expected to be recognized over a period of 1.33 years. (22) EMPLOYEE BENEFIT PLANS Profit Sharing Plan. The Company had a noncontributory profit sharing plan which was terminated on January 1, 2020. All employees, other than temporary employees, working 20 hours or more per week were eligible to participate in the profit sharing plan. The Company’s Board of Directors authorized all contributions to the profit sharing plan. Participants became 100% vested upon the completion of two years of vesting service. Accrued contribution expense for this plan of $2.1 million and $2.4 million in 2019 and 2018, respectively, is included in employee benefits expense in the Company’s consolidated statements of income. Savings Plan. In addition, the Company has a contributory employee savings plan. All employees are eligible to participate in the plan. Employee participation in the plan is at the option of the employee. The Company contributed 100% of the first 6% and 5% of the participating employee’s eligible compensation in 2020 and 2019, respectively. Contribution expense for this plan of $8.9 million, $7.0 million, and $6.3 million in 2020, 2019, and 2018, respectively, is included in employee benefits expense in the Company’s consolidated statements of income. Post-Retirement Healthcare Plan. The Company sponsors a contributory defined benefit healthcare plan (the “Plan”) for active employees and employees and directors retiring from the Company at the age of at least 55 years and with at least 15 years of continuous service. Retired Plan participants contribute the full cost of benefits based on the average per capita cost of benefit coverage for both active employees and retired Plan participants. In 2016, the Company amended the Plan to discontinue offering healthcare benefits to future retirees beginning July 1, 2016, with current retirees as of July 1, 2016 continuing in the Plan. The Plan’s unfunded benefit obligation of $0.3 million and $0.4 million as of December 31, 2020 and 2019, respectively, is included in accounts payable and accrued expenses in the Company’s consolidated balance sheets. Net periodic benefit costs of $0.5 million, $0.7 million and $0.8 million for the years ended December 31, 2020, 2019 and 2018, respectively, are included in employee benefits expense in the Company’s consolidated statements of income. 120 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) (23) OTHER COMPREHENSIVE INCOME The gross amounts of each component of other comprehensive income and the related tax effects for the periods indicated are as follows: Year Ended December 31, 2020 Investment securities available-for sale: Before Tax Amount Tax Expense (Benefit) Net of Tax Amount Change in net unrealized gains during period $ 61.8 $ 15.8 $ Reclassification adjustment for net gains included in net income Change in net unrealized loss on derivatives Defined benefits post-retirement benefit plan: Change in net actuarial gains Total other comprehensive income Year Ended December 31, 2019 Investment securities available-for sale: Change in net unrealized gains during period Reclassification adjustment for net gains included in net income Reclassification adjustment for securities transferred from held-to-maturity to available-for-sale Defined benefits post-retirement benefit plan: Change in net actuarial gains Total other comprehensive income Year Ended December 31, 2018 Investment securities available-for sale: $ $ $ (0.3) 0.2 (0.5) 61.2 $ (0.1) — (0.1) 15.6 $ 46.0 (0.2) 0.2 (0.4) 45.6 Before Tax Amount Tax Expense (Benefit) Net of Tax Amount 54.9 $ (0.1) 14.1 $ — (6.0) (1.6) (0.8) 48.0 $ (0.1) 12.4 $ 40.8 (0.1) (4.4) (0.7) 35.6 Before Tax Amount Tax Expense (Benefit) Net of Tax Amount Change in net unrealized loss during period $ (13.9) $ Reclassification adjustment for net loss included in net income Change in unamortized loss on available-for-sale securities transferred into held-to-maturity 0.1 1.6 Defined benefits post-retirement benefit plan: Change in net actuarial loss Total other comprehensive loss (0.6) (12.8) $ $ (3.6) $ — 0.4 (0.1) (3.3) $ (10.3) 0.1 1.2 (0.5) (9.5) The components of accumulated other comprehensive income, net of income taxes, are as follows: Year ended December 31, 2020 2019 Net unrealized gain on investment securities available-for-sale $ 56.8 $ Net unrealized loss on derivatives Net actuarial gain on defined benefit post-retirement benefit plans (0.2) — Net accumulated other comprehensive income (loss) $ 56.6 $ 10.6 — 0.4 11.0 121 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) (24) CONDENSED FINANCIAL INFORMATION (PARENT COMPANY ONLY) Following is condensed financial information of First Interstate BancSystem, Inc. December 31, Condensed balance sheets: Cash and cash equivalents Investment in bank subsidiary Advances to subsidiaries, net Other assets Total assets Other liabilities Long-term debt Subordinated debentures held by subsidiary trusts Total liabilities Stockholders’ equity Total liabilities and stockholders’ equity Years Ended December 31, Condensed statements of income: Dividends from subsidiaries Other interest income Other income, primarily management fees from subsidiaries Total income Salaries and benefits Interest expense Acquisition expenses Other operating expenses, net Total expenses Earnings before income tax benefit Income tax benefit Income before undistributed earnings of subsidiaries Undistributed earnings of subsidiaries Net income Years Ended December 31, Condensed statements of cash flows: Cash flows from operating activities: Net income Adjustments to reconcile net income to cash provided by operating activities: Undistributed earnings of subsidiaries Stock-based compensation expense Other, net Net cash provided by operating activities Cash flows from investing activities: Acquisition of bank holding company, net of cash and cash equivalents received Net cash used in investing activities 2020 2019 $ $ $ $ $ $ 123.2 1,986.6 41.0 61.3 2,212.1 66.7 98.6 87.0 252.3 1,959.8 2,212.1 2019 178.0 0.3 25.9 204.2 34.2 4.7 17.0 14.8 70.7 133.5 (11.9) 145.4 35.6 181.0 $ $ $ $ $ $ 147.1 1,899.3 48.9 61.7 2,157.0 56.2 — 86.9 143.1 2,013.9 2,157.0 2018 148.5 0.1 17.0 165.6 25.3 4.5 8.1 14.5 52.4 113.2 (9.3) 122.5 37.7 160.2 2020 130.0 0.1 28.7 158.8 31.5 6.6 — 15.6 53.7 105.1 (6.1) 111.2 50.0 161.2 $ $ 2020 2019 2018 $ 161.2 $ 181.0 $ 160.2 (50.0) 7.5 (13.6) 105.1 — — (35.6) 8.0 8.1 161.5 — — (37.7) 5.6 16.4 144.5 (14.7) (14.7) 122 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) Years Ended December 31, Cash flows from financing activities: Net (decrease) increase in advances from subsidiaries Proceeds from issuance of long-term debt Repayment of long-term debt Proceeds from issuance of common stock, net of stock issuance costs Purchase and retirement of common stock Dividends paid to common stockholders Net cash used in financing activities Net change in cash and cash equivalents Cash and cash equivalents, beginning of year Cash and cash equivalents, end of year 2020 2019 2018 16.7 98.6 — 1.1 (116.8) (128.6) (129.0) (23.9) 147.1 123.2 $ (6.6) — — 1.0 (2.5) (79.2) (87.3) 74.2 72.9 147.1 $ (9.9) — (26.0) 1.8 (1.0) (64.1) (99.2) 30.6 42.3 72.9 $ There were no, $176.1 million, $173.3 million in 2020, 2019 and 2018, respectively, of noncash financing activities for the issuance of common stock were related to the CMYF and IIBK acquisitions in 2019, and the INB acquisition in 2018. (25) FAIR VALUE MEASUREMENTS Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. There is a fair value hierarchy which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The three levels of inputs that may be used to measure fair value are as follows: • Level 1 - Quoted prices in active markets for identical assets or liabilities • Level 2 - Observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities • Level 3 - Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of assets or liabilities The methodologies used by the Company in determining the fair values of each class of financial instruments are based primarily on the use of independent, market-based data to reflect a value that would be reasonably expected in an orderly transaction between market participants at the measurement date, and therefore are classified within Level 2 of the valuation hierarchy. There have been no significant changes in the valuation techniques during the periods ended December 31, 2020 and 2019. The Company’s policy is to recognize transfers between levels as of the end of the reporting period. Transfers in and out of Level 1, Level 2 and Level 3 are recognized on the actual transfer date. There were no transfers between fair value hierarchy levels during the years ended December 31, 2020 and 2019. Further details on the methods used to estimate the fair value of each class of financial instruments above are discussed below: Investment Debt Securities Available-for-Sale. The Company obtains fair value measurements for investment securities from an independent pricing service. The fair value measurements consider observable data that may include dealer quotes, market spreads, cash flows, the U.S. Treasury yield curve, live trading levels, trade execution data, market consensus prepayment speeds, credit information, and the investment’s terms and conditions, among other things. Vendors chosen by the Company are widely recognized vendors whose evaluations support the pricing functions of financial institutions, investment and mutual funds, and portfolio managers. If needed, a broker may be utilized to determine the reported fair value of investment securities. Loans Held for Sale. Fair value measurements for loans held for sale are obtained from an independent pricing service. The fair value measurements consider observable data that may include binding contracts or quotes or bids from third party investors as well as loan level pricing adjustments. 123 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) Interest Rate Swap Contracts. Fair values for derivative interest rate swap contracts are based upon the estimated amounts to settle the contracts considering current interest rates and are calculated using discounted cash flows that are observable or that can be corroborated by observable market data. The inputs used to determine fair value include the three-month LIBOR forward curve to estimate variable rate cash inflows and the federal funds effective swap rate to estimate the discount rate. The estimated variable rate cash inflows are compared to the fixed rate outflows and such difference is discounted to a present value to estimate the fair value of the interest rate swaps. The change in the value of derivative assets attributable to basis risk, or the risk that offsetting investments in a hedging strategy will not experience price changes in entirely opposite directions from each other, was not significant in the reported periods. The Company also obtains and compares the reasonableness of the pricing from an independent third party. For purposes of potential valuation adjustments to our derivative positions, we evaluate the credit risk of our counterparties as well as ours. Accordingly, we have considered factors such as the likelihood of our default and the default of our counterparties, our net exposures and remaining contractual life, among other things, in determining if any fair value adjustments related to credit risk are required. The change in value of derivative assets and derivative liabilities attributable to credit risk was not significant during the reported periods. Interest Rate Lock Commitments. Fair value measurements for interest rate lock commitments are obtained from an independent pricing service. The fair value measurements consider observable data that may include prices available from secondary market investors taking into consideration various characteristics of the loan, including the loan amount, interest rate, value of the servicing, and loan to value ratio, among other things. Observable data is then adjusted to reflect changes in interest rates, the Company’s estimated pull-through rate, and estimated direct costs necessary to complete the commitment into a closed loan net of origination and processing fees collected from the borrower. Forward Loan Sales Contracts. The fair value measurements for forward loan sales contracts are obtained from an independent pricing service. The fair value measurements consider observable data that includes sales of similar loans. Deferred Compensation Plan Assets and Liabilities. The fair values of deferred compensation plan assets and liabilities are based primarily on the use of independent, market-based data to reflect a value that would be reasonably expected in an orderly transaction between market participants at the measurement date. These investments are in the same funds and purchased in the same amounts as the participants’ selected investments, which represent the underlying liabilities to plan participants. Deferred compensation plan liabilities are recorded at amounts due to participants, based on the fair value of participants’ selected investments. 124 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) Financial assets and financial liabilities measured at fair value on a recurring basis are as follows: As of December 31, 2020 Investment debt securities available-for-sale: State, county, and municipal securities Obligations of U.S. government agencies U.S. agency mortgage-backed securities & collateralized mortgage obligations Private mortgage-backed securities Corporate securities Other investments Loans held for sale Derivative assets: Interest rate swap contracts Interest rate lock commitments Derivative liabilities: Interest rate swap contracts Forward loan sales contracts Deferred compensation plan assets Deferred compensation plan liabilities As of December 31, 2019 Investment debt securities available-for-sale: U.S. Treasury Notes State, county, and municipal securities Obligations of U.S. government agencies U.S. agency mortgage-backed securities & collateralized mortgage obligations Private mortgage-backed securities Corporate securities Other investments Loans held for sale Derivative assets: Interest rate swap contracts Interest rate lock commitments Derivative liabilities: Interest rate swap contracts Forward loan sales contracts Deferred compensation plan assets Deferred compensation plan liabilities Fair Value Measurements at Reporting Date Using Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Balance $ 465.9 $ 331.9 2,897.6 10.9 302.2 0.2 74.0 52.0 3.3 52.2 1.1 19.1 19.1 — — — — — — — — — — — — — $ $ 465.9 331.9 2,897.6 10.9 302.2 0.2 74.0 52.0 3.3 52.2 1.1 19.1 19.1 — — — — — — — — — — — — — Fair Value Measurements at Reporting Date Using Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Balance — — — — — — — — — — — — — — $ $ 9.0 80.9 366.8 2,317.2 47.2 135.7 3.2 100.9 21.9 1.3 21.9 0.3 18.2 18.2 — — — — — — — — — — — — — — $ 9.0 $ 80.9 366.8 2,317.2 47.2 135.7 3.2 100.9 21.9 1.3 21.9 0.3 18.2 18.2 125 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) Additionally, from time to time, certain assets are measured at fair value on a non-recurring basis. Adjustments to fair value generally result from the application of lower-of-cost-or-market accounting or write-downs of individual assets due to credit deterioration. The following table presents information about the Company’s assets and liabilities measured at fair value on a non-recurring basis: As of December 31, 2020 Total Fair Value Measurements at Reporting Date Using Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Gains (Losses) Collateral-dependent loans* $ Long-lived assets to be disposed of by sale 14.7 $ 5.3 — $ — — $ — 14.7 $ 5.3 (2.8) (0.2) As of December 31, 2019 Impaired loans* $ 27.6 $ Other real estate owned Long-lived assets to be disposed of by sale 2.2 6.2 Fair Value Measurements at Reporting Date Using Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Gains (Losses) Total — $ — — — $ — — 27.6 $ (13.7) 2.2 6.2 (1.2) (0.2) *The Company adopted ASC 326 as of January 1, 2020 which changes the methodology of impaired loans. The comparable period presents impaired loans under previously applicable GAAP. Collateral-dependent Loans. Collateral-dependent loans are reported at the fair value of the underlying collateral if repayment is expected solely from collateral. The collateral-dependent loans are reported at fair value through specific valuation allowance allocations. In addition, when it is determined that the fair value of a collateral- dependent loan is less than the recorded investment in the loan, the carrying value of the loan is adjusted to fair value through a charge to the allowance for credit losses. Collateral values are estimated using independent appraisals and management estimates of current market conditions. As of December 31, 2020, certain collateral- dependent loans with a carrying value of $17.5 million were reduced by specific valuation allowance allocations of $2.8 million resulting in a reported fair value of $14.7 million. As of December 31, 2019, certain impaired loans with a carrying value of $41.3 million were reduced by specific valuation allowance allocations of $3.6 million and partial loan charge-offs of $10.1 million resulting in a reported fair value of $27.6 million. OREO. The fair values of OREO are estimated using independent appraisals and management estimates of current market conditions. Upon initial recognition, write-downs based on the foreclosed asset’s fair value at foreclosure are reported through charges to the allowance for credit losses. Periodically, the fair value of foreclosed assets is remeasured with any subsequent write-downs charged to OREO expense in the period in which they are identified. Long-lived Assets to be Disposed of by Sale. Long-lived assets to be disposed of by sale are carried at the lower of carrying value or fair value less estimated costs to sell. The fair values of long-lived assets to be disposed of by sale are based upon observable market data and management estimates of current market conditions. As of December 31, 2020, the Company had long-lived assets to be disposed of by sale with carrying values aggregating $5.5 million, which was reduced by write-downs of $0.2 million charged to other expense, resulting in a reported fair value of $5.3 million. As of December 31, 2019, the Company had long-lived assets to be disposed of by sale with carrying values of $6.4 million, reduced by write-downs of $0.2 million, resulting in a fair value of $6.2 million. 126 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) The following table presents additional quantitative information about assets measured at fair value on a non- recurring basis and for which the Company has utilized Level 3 inputs to determine fair values: As of December 31, 2020 Fair Value Valuation Technique Unobservable Inputs Range (Weighted Average) Collateral-dependent loans* Long-lived assets to be disposed of by sale $ 14.7 Appraisal Appraisal adjustment 0% - 18% (9%) 5.3 Appraisal Appraisal adjustment 0% - 0% 0% As of December 31, 2019 Fair Value Valuation Technique Unobservable Inputs Range (Weighted Average) Impaired loans* $ 27.6 Other real estate owned Long-lived assets to be disposed of by sale 2.2 6.2 Appraisal Appraisal Appraisal adjustment 0% - 56% (22%) Appraisal adjustment 8% - 65% (27%) Appraisal Appraisal adjustment 0% - 37% (3%) *The Company adopted ASC 326 as of January 1, 2020 which changes the methodology of impaired loans. The comparable period presents impaired loans under previously applicable GAAP. The Company is required to disclose the fair value of financial instruments for which it is practical to estimate fair value. The methodologies for estimating the fair value of financial instruments that are measured at fair value on a recurring or non-recurring basis are discussed above. The methodologies for estimating the fair value of other financial instruments are discussed below. For financial instruments bearing a variable interest rate where no credit risk exists, it is presumed that recorded book values are reasonable estimates of fair value. Financial Assets. Carrying values of cash, cash equivalents, and accrued interest receivable approximate fair values due to the liquid and/or short-term nature of these instruments. Fair values for investment securities held-to-maturity are obtained from an independent pricing service, which considers observable data that may include dealer quotes, market spreads, cash flows, the U.S. Treasury yield curve, live trading levels, trade execution data, market consensus prepayment speeds, credit information, and the investment’s terms and conditions, among other things. Fair values of fixed rate loans and variable rate loans that reprice on an infrequent basis are estimated using an exit price by discounting future cash flows using current interest rates at which similar loans with similar terms would be made to borrowers of similar credit quality using an exit price notion. Carrying values of variable rate loans that reprice frequently, and with no change in credit risk, approximate the fair values of these instruments. Financial Liabilities. The fair values of demand deposits, savings accounts, securities sold under repurchase agreements, and accrued interest payable are the amounts payable on demand at the reporting date. The fair values of fixed-maturity certificates of deposit are estimated using external market rates currently offered for deposits with similar remaining maturities. The fair values of derivative liabilities are obtained from an independent pricing service, which considers observable data that may include the three-month LIBOR forward curve, the federal funds effective swap rate and cash flows, among other things. The carrying values of the interest-bearing demand notes to the United States Treasury are deemed an approximation of fair values due to the frequent repayment and repricing at market rates. The fixed and floating rate subordinated debentures, floating rate subordinated term loan, notes payable to the FHLB, fixed rate subordinated term debt, and capital lease obligation are estimated by discounting future cash flows using current rates for advances with similar characteristics. Commitments to Extend Credit and Standby Letters of Credit. The fair value of commitments to extend credit and standby letters of credit, based on fees currently charged to enter into similar agreements, is not significant. 127 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) The estimated fair values of financial instruments that are reported in the Company’s consolidated balance sheets, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value, are as follows: As of December 31, 2020 Financial assets: ` Carrying Amount Estimated Fair Value Fair Value Measurements at Reporting Date Using Significant Unobservable Inputs (Level 3) Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Cash and cash equivalents $ 2,276.8 $ 2,276.8 $ 2,276.8 $ Investment debt securities available-for-sale 4,008.7 4,008.7 Investment debt securities held-to-maturity Accrued interest receivable Mortgage servicing rights, net Loans held for sale 51.6 51.1 24.0 74.0 55.0 51.1 24.0 74.0 Net loans held for investment 9,663.2 9,785.6 Derivative assets Deferred compensation plan assets 55.3 19.1 55.3 19.1 — — — — — — — — — $ 4,008.7 55.0 51.1 24.0 74.0 9,770.9 55.3 19.1 Total financial assets Financial liabilities: $ 16,223.8 $ 16,349.6 $ 2,276.8 $ 14,058.1 $ Total deposits, excluding time deposits $ 13,158.3 $ 13,158.3 $ 13,158.3 $ — $ Time deposits 1,058.7 1,061.1 Securities sold under repurchase agreements 1,091.4 1,091.4 Accrued interest payable Long-term debt Subordinated debentures held by subsidiary trusts Derivative liabilities Deferred compensation plan liabilities 5.8 5.8 112.4 116.5 87.0 53.3 19.1 81.3 53.3 19.1 — — — — — — — 1,061.1 1,091.4 5.8 116.5 81.3 53.3 19.1 Total financial liabilities $ 15,586.0 $ 15,586.8 $ 13,158.3 $ 2,428.5 $ — — — — — — 14.7 — — 14.7 — — — — — — — — — 128 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) Fair Value Measurements at Reporting Date Using Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Carrying Amount Estimated Fair Value As of December 31, 2019 Financial assets: Cash and cash equivalents Investment debt securities available-for-sale Investment debt securities held-to-maturity Accrued interest receivable Mortgage servicing rights, net Loans held for sale Net loans held for investment Derivative assets Deferred compensation plan assets Total financial assets Financial liabilities: Total deposits, excluding time deposits Time deposits Securities sold under repurchase agreements Accrued interest payable Long-term debt Subordinated debentures held by subsidiary trusts Derivative liabilities Deferred compensation plan liabilities $ 1,076.8 $ 1,076.8 $ 2,960.0 94.5 46.7 34.8 100.9 8,930.7 23.2 18.2 2,960.0 92.3 46.7 30.2 100.9 8,857.7 23.2 18.2 $ 13,206.0 $ 13,285.8 $ 1,076.8 $ — — — — — — — — 1,076.8 $ $ 10,213.5 $ 10,213.5 $ 1,446.6 697.6 12.1 10.4 1,450.0 697.6 12.1 13.9 10,213.5 $ — — — — 86.9 22.2 18.2 81.3 22.2 18.2 — — — — $ 2,960.0 94.5 46.7 34.8 100.9 8,906.7 23.2 18.2 12,185.0 $ — $ 1,446.6 697.6 12.1 10.4 81.3 22.2 18.2 Total financial liabilities $ 12,514.4 $ 12,501.9 $ 10,213.5 $ 2,288.4 $ (26) RELATED PARTY TRANSACTIONS — — — — — — 24.0 — — 24.0 — — — — — — — — — Certain executive officers, directors and greater than 5% shareholders of the Company and certain entities and individuals related to such persons had transactions with the Company in the ordinary course of business. These parties were deposit clients of the Bank and incurred indebtedness in the form of loans, as clients, of $22.4 million and $40.3 million at December 31, 2020 and 2019, respectively. During 2020, new loans and advances on existing loans of $17.2 million were funded and loan repayments totaled $17.0 million. In addition, $18.1 million of loans were removed due to changes in related parties during the year. All deposit and loan transactions were made on substantially the same terms, including interest rates and collateral, as those prevailing at the time for comparable transactions with persons not related to the Company and do not involve more than a normal risk of collectability or present other unfavorable features. Prior to 2020, the Company leased an aircraft from an entity wholly-owned by a member of the Scott family control group. Under the terms of the lease, the Company paid a fee for each flight hour plus certain third-party operating expenses related to the aircraft. During 2019 and 2018, the Company paid total fees and operating expenses of $22 thousand and $53 thousand respectively, for its use of the aircraft. In addition, we lease a portion of our hanger and provide pilot services to the Scott family control group’s related entity. During 2020, 2019, and 2018, the Company received payments from the related entity of $54 thousand, $30 thousand, and $25 thousand, respectively, for hangar use, pilot fees, and reimbursement of certain third-party operating expenses related to the use of the aircraft. The Company purchases services from an entity which includes certain members of the Company’s control group. Services provided for the Company’s benefit include shareholder education and communication, strategic enterprise planning, and corporate governance consultation. During 2020, 2019, and 2018, the Company paid $85 thousand, $85 thousand, and $80 thousand, respectively, for these services. In addition, the Company provides human resource services to members of the Company’s control group. During 2020, 2019, and 2018, the Company received payments from these related parties of $0.7 million, $0.5 million, and $0.4 million, respectively, for the reimbursement of human resource services provided. 129 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) (27) RECENT AUTHORITATIVE ACCOUNTING GUIDANCE ASU 2016-13, “Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments.” The amendments in ASU 2016-13 require a financial asset or group of financial assets measured at amortized cost basis to be presented on a company’s financial statements at the net amount expected to be collected based on historical experience, current conditions and reasonable and supportable forecasts. ASU 2016-13 requires a company’s income statement to reflect the measurement of credit losses for newly recognized financial assets as well as the expected increases or decreases of expected credit losses that have taken place during the period. The amendments in ASU 2016-13 require that the allowance for credit losses for purchased financial assets with a more-than-insignificant amount of credit deterioration since origination be measured at amortized cost basis with the initial allowance for credit losses added to the purchase price rather than being reported as a credit loss expense. ASU 2016-13 also requires that credit losses relating to available-for-sale debt securities be recorded through an allowance for credit losses. The amendments in ASU 2016-13 are effective for the Company for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. A prospective transition approach is required for debt securities for which other-than-temporary impairment was recognized before the effective date. On January 1, 2020, the Company adopted ASC 326 using the modified retrospective method for all financial assets measured at amortized cost and off-balance sheet credit exposures. The adoption of ASU 2016-13 resulted in an increase in the allowance for loan losses as a result of changing from the “incurred loss” model, which encompassed allowances for current known and inherent losses within the portfolio, to the “expected loss” model, which encompasses allowances for losses expected to be incurred over the life of the portfolio. The amendments, as applied to our debt securities, had no material impact. The amendments were applied through a cumulative-effect adjustment to retained earnings of $24.1 million as of January 1, 2020. The transition adjustment included an increase in the allowance for credit losses on loans of $30.0 million and an increase in the allowance for credit losses on off-balance sheet credit exposures of $2.3 million, net of the corresponding increases in deferred tax assets of $8.2 million. The Company adopted ASC 326 using the prospective transition approach for PCD financial assets, previously classified as purchased credit impaired, or PCI, and accounted for under ASC 310-30. In accordance with the standard, the Company did not reassess whether PCI assets met the criteria of PCD assets as of the date of adoption. The remaining discount on the PCD assets was determined to be related to noncredit factors and will be accreted into interest income on a level-yield method over the life of the loans. The Company has elected to opt into the transition election to mitigate the effects of ASC 326 on the regulatory capital ratios relative to recent legislation in relief of COVID‑19 pandemic on the economy and financial institutions in the United States. The referenced relief allows a total five-year phase in of the CECL impact on capital and relief over the next two years for the impact on the allowance for credit losses resulting from COVID‑19. Refer to “Note 17 - Regulatory Capital” for additional details of the election. ASU 2018-13, “Fair Value Measurement (Topic 820): Disclosure Framework – Changes to the Disclosure Requirements for Fair Value Measurement.” In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement: Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement (ASU 2018-13). The amendments in this Update removes, modifies, and adds to the disclosure requirements on fair value measurements in Topic 820, Fair Value Measurement, based on the concepts in the Concepts Statement, including the consideration of costs and benefits. The amendments in this Update are effective for all entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. The amendments on changes in unrealized gains and losses, the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements, and the narrative description of measurement uncertainty should be applied prospectively for only the most recent interim or annual period presented in the initial fiscal year of adoption. All other amendments should be applied retrospectively to all periods presented upon their effective date. The amendments in this Update became effective for the Company on January 1, 2020, and as the amendment is a revision to the disclosure requirements did not have a significant impact on the Company’s consolidated financial statements, results of operations, or liquidity. 130 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) ASU 2018-14, “Compensation – Retirement Benefits – Defined Benefit Plans – General (Subtopic 715-20): Disclosure Framework – Changes to the Disclosure Requirements for Defined Benefit Plans.” In August 2018, the FASB issued ASU 2018-14, Compensation - Retirement Benefits - Defined Benefit Plans - General: Disclosure Framework - Changes to the Disclosure Requirements for Defined Benefit Plans (ASU 2018-14). The amendments in this Update remove disclosures that no longer are considered cost beneficial, clarify the specific requirements of disclosures, and add disclosure requirements identified as relevant. Although narrow in scope, the amendments are considered an important part of the Board’s efforts to improve the effectiveness of disclosures in the notes to financial statements by applying concepts in the Concepts Statement. The amendments in this Update are effective for fiscal years ending after December 15, 2020, for public business entities. Early adoption is permitted. While the Company continues to assess all potential impacts of the standard, we currently expect adoption to have an immaterial impact on our consolidated financial statements disclosures. ASU 2018-15, “Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40) - Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract.” In August 2018, the FASB issued ASU 2018-15, Intangibles-Goodwill and Other- Internal-Use Software (Subtopic 350-40). The amendments in this Update clarifies certain aspects of ASU 2015-05, “Customer’s Accounting for Fees Paid in a Cloud Computing Arrangement,” which was issued in April 2015. ASU 2018-15 aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software (and hosting arrangements that include an internal-use software license). The accounting for the service element of a hosting arrangement that is a service contract is not affected by the Update. The amendments in this Update are effective for fiscal years beginning after December 15, 2019, for public business entities. The amendments in this Update became effective for the Company on January 1, 2020 and did not have a significant impact on the Company’s consolidated financial statements, results of operations, or liquidity. ASU 2019-04, “Codification Improvements to Topic 326, Financial Instruments—Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments.” In April 2019, the FASB issued ASU 2019-04, Codification Improvements to Topic 326, Financial Instruments-Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments, that clarifies and improves areas of guidance related to the recently issued standards on credit losses (ASU 2016-13), hedging (ASU 2017-12), and recognition and measurement of financial instruments (ASU 2016-01). The amendments generally have the same effective dates as their related standards. If already adopted, the amendments of ASU 2016-01 and ASU 2016-13 are effective for fiscal years beginning after December 15, 2019 and the amendments of ASU 2017-12 are effective as of the beginning of the Company’s next annual reporting period; early adoption is permitted. The Company previously adopted both ASU 2017-12 and ASU 2016-01 and the amendments of ASU 2019-04 became effective upon adoption of ASU 2016-13. ASU 2020-04, “Reference Rate Reform (Topic 848), Facilitation of the Effects of Reference Rate Reform on Financial Accounting.” In March 2020, the FASB issued ASU 2020-04, which provides temporary optional expedients and exceptions for applying GAAP to loan and lease agreements, derivative contracts, and other transactions affected by the anticipated transition away from LIBOR toward new interest rate benchmarks. For transactions that are modified because of reference rate reform and that meet certain scope guidance (i) modifications of loan agreements should be accounted for by prospectively adjusting the effective interest rate and the modification will be considered "minor" so that any existing unamortized origination fees/costs would carry forward and continue to be amortized and (ii) modifications of lease agreements should be accounted for as a continuation of the existing agreement with no reassessments of the lease classification and the discount rate or remeasurements of lease payments that otherwise would be required for modifications not accounted for as separate contracts. ASU 2020-04 is effective March 12, 2020 through December 31, 2022. An entity may elect to apply ASU 2020-04 for contract modifications as of January 1, 2020, or prospectively from a date within an interim period that includes or is subsequent to March 12, 2020, up to the date that the financial statements are available to be issued. Once elected for a Topic or an Industry Subtopic within the Codification, the amendments in this ASU must be applied prospectively for all eligible contract modifications for that Topic or Industry Subtopic. The Company adopted certain elections related to cash flow hedges which did not have a significant impact on the Company’s financial position or results of operations. The Company is currently evaluating the impact the adoption of other expedients in the standard and does not anticipate it will have a significant impact on the Company’s financial position or results of operations. 131 FIRST INTERSTATE BANCSYSTEM, INC. AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in millions, except share and per share data) ASU 2020-08, “Codification Improvements to Subtopic 310-20, Receivables—Nonrefundable Fees and Other Costs.” In October 2020, the FASB issued ASU 2020-08, Codification Improvements to Subtopic 310-20, Receivables-Nonrefundable Fees and Other Costs, that clarifies an entity should reevaluate whether a callable debt security is within the scope of paragraph 310-20-35-33 for each reporting period. The amendments in this ASU are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2020. Early application is not permitted. The amendments in this Update will become effective for the Company on January 1, 2021 and are not expected to have a significant impact on the Company’s consolidated financial statements, results of operations, or liquidity. ASU 2021-01, “Reference Rate Reform (Topic 848)” In January 2021, the FASB issued ASU 2021-01, Reference Rate Reform Topic 848, that clarifies certain optional expedients and exceptions in Topic 848 for contract modifications and hedge accounting apply to derivatives that are affected by the discounting transition. An entity may elect to apply the amendments in this ASU on a full retrospective basis as of any date from the beginning of an interim period that includes or is subsequent to March 12, 2020, or on a prospective basis to new modifications from any date within an interim period that includes or is subsequent to the date of the issuance of a final ASU. If an entity elects to apply any of the amendments in this ASU for an eligible hedging relationship, any adjustments as a result of those elections must be reflected as of the date the entity applies the election. The amendments in this ASU do not apply to contract modifications made, new hedging relationships entered into, or existing hedging relationships evaluated for effectiveness in periods after December 31, 2022, except for hedging relationships existing as of December 31, 2022, that apply certain optional expedients in which the accounting effects are recorded through the end of the hedging relationship (including periods after December 31, 2022). The Company is currently evaluating the impact of the standard and does not anticipate it will have a significant impact on the Company’s financial position or results of operations. (28) SUBSEQUENT EVENTS Subsequent events have been evaluated for potential recognition and disclosure through the date financial statements were filed with the Securities and Exchange Commission. On January 28, 2021, the Company declared a quarterly dividend to common shareholders of $0.41 per share, which was paid on February 19, 2021 to shareholders of record as of February 9, 2021. As part of the U.S. government’s response to COVID-19, the CARES Act enacted a number of measures to mitigate the impact of the COVID-19 pandemic on the U.S. economy. For instance, the CARES Act created a new guaranteed, unsecured loan program under the Small Business Administration, or SBA, called the Payroll Protection Program, or the PPP, which the Company participated in, designed to provide a direct incentive for sole proprietors, independent contractors, self-employed persons, non-profits, and small businesses with less than 500 employees, allowing for narrow exceptions with businesses greater than 500 employees, to keep their workers on the payroll during the pandemic period. The RELIEF Act extended the program, beginning in January 2021, for which the Company is actively participating in assisting our customers with applications for resources through the program and as of February 19, 2021 has approved more than 3,150 applications, for approximately $296.3 million. No other events requiring recognition or disclosure were identified. 132 (a) 2. Financial statement schedules All other schedules to the consolidated financial statements of the Registrant are omitted since the required information is either not applicable, deemed immaterial, or is shown in the respective financial statements or in notes thereto. (a) 3. Exhibits Exhibit Number 3.1 3.2* 4.1* 4.2 4.3 10.1 10.2† 10.3† 10.6† 10.8† 10.11*† 10.12† 10.13† 10.15† 10.16† 14.1 Description Third Amended and Restated Articles of Incorporation dated September 10, 2019 (incorporated herein by reference to Exhibit 3.1 to the Company’s Quarterly Report on Form 10-Q, File No. 001-34653, filed for the quarter ended September 30, 2019). Fourth Amended and Restated Bylaws. Description of securities registered under Section 12 of the Securities Exchange Act (incorporated herein by reference to Exhibit 4.1 to the Company’s Annual Report on Form 10-K, File No. 001-34653, filed for the year ended December 31, 2019) An Indenture, dated May 15, 2020, between First Interstate BancSystem, Inc. and U.S. Bank National Association, as trustee (incorporated herein by reference to Exhibit 4.1 to the Company’s Current Report on Form 8-K, File No. 001-34653, filed on May 18, 2020) First Supplemental Indenture, dated May 15, 2020, between First Interstate BancSystem, Inc. and U.S. Bank National Association, as trustee (incorporated herein by reference to Exhibit 4.2 to the Company’s Current Report on Form 8-K, File No. 001-34653, filed on May 18, 2020) Lease Agreement between Billings 401 Joint Venture and First Interstate Bank Montana dated September 20, 1985 and addendum thereto (incorporated herein by reference to Exhibit 10.1 to the Company’s Annual Report on Form 10-K, File No. 001-34653, filed for the year ended December 31, 2017) First Interstate BancSystem’s Deferred Compensation Plan dated December 1, 2006 (incorporated herein by reference to Exhibit 10.9 to the Company’s Pre-Effective Amendment No. 3 to Registration Statement on Form S-1, File No. 333-164380, filed on March 23, 2010) First Amendment to the First Interstate BancSystem’s Deferred Compensation Plan dated October 24, 2008 (incorporated herein by reference to Exhibit 10.10 to the Company’s Pre- Effective Amendment No. 3 to Registration Statement on Form S-1, No. 333-164380, filed on March 23, 2010) First Interstate BancSystem, Inc. 2006 Equity Compensation Plan, amended and restated as of November 21, 2013 (incorporated herein by reference to Exhibit 4.3 to the Company’s Registration Statement on Form S-8, No. 333-193543, filed on January 24, 2014) First Interstate BancSystem, Inc. 2015 Equity and Incentive Plan , amended and restated as of January 1, 2019 (incorporated herein by reference to Exhibit 10.8 to the Company’s Annual Report on Form 10-K, File No. 001-34653, filed on February 27, 2019) First Interstate BancSystem, Inc. Director Compensation Summary Executive Employment Agreement between First Interstate BancSystem, Inc. and Kevin P. Riley dated April 3, 2018 (incorporated herein by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K, File No. 001-34653, filed on April 5, 2018) Executive Employment Agreement between First Interstate BancSystem, Inc. and Marcy D. Mutch dated April 3, 2018 (incorporated herein by reference to Exhibit 10.2 to the Company’s Current Report on Form 8-K, File No. 001-34653, filed on April 5, 2018) Executive Employment Agreement between First Interstate BancSystem, Inc. and Jodi Delahunt Hubbell dated April 3, 2018 (incorporated herein by reference to Exhibit 10.15 to the Company’s Annual Report on Form 10-K, File No. 001-34653, filed on February 27, 2019) Executive Employment Agreement between First Interstate BancSystem, Inc. and Philip G. Gaglia dated April 3, 2018 (incorporated herein by reference to Exhibit 10.16 to the Company’s Annual Report on Form 10-K, File No. 001-34653, filed on February 27, 2019) Code of Ethics for Chief Executive Officer and Senior Financial Officers (incorporated herein by reference to Exhibit 14.1 to the Company’s Annual Report on Form 10-K, File No. 001-34653, filed for the fiscal year ended December 31, 2010) 133 21.1* 23.1* 31.1* 31.2* 32** 101* 104* Subsidiaries of First Interstate BancSystem, Inc. Consent of RSM US LLP Independent Registered Public Accounting Firm Certification by Chief Executive Officer pursuant to Rule 13a-14(a) and Rule 15d-14(a) under the Securities Exchange Act of 1934, as amended. Certification by Chief Financial Officer pursuant to Rule 13a-14(a) and Rule 15d-14(a) under the Securities Exchange Act of 1934, as amended. 18 U.S.C. Section 1350 Certifications. Interactive Data File - The instance document does not appear in the interactive data file because its XBRL tags are embedded within the inline XBRL document. Cover Page Interactive Data File - The cover page XBRL tags are embedded within the inline XBRL document (included in Exhibit 101) † Management contract or compensatory plan or arrangement. * Filed herewith. ** Furnished (not filed) herewith. (b) Exhibits See Item 15(a)3 above. (c) Financial Statements Schedules See Item 15(a)2 above. None. Item 16. Form 10-K Summary 134 Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. SIGNATURES First Interstate BancSystem, Inc. By: /s/ KEVIN P. RILEY February 26, 2021 Kevin P. Riley President and Chief Executive Officer Date Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated. By: By: By: By: By: By: By: By: By: By: By: By: By: /s/ DAVID L. JAHNKE David L. Jahnke, Chair of the Board /s/ ALICE S. CHO Alice S. Cho, Director /s/ DANA L. CRANDALL Dana L. Crandall, Director /s/ DENNIS L. JOHNSON Dennis L. Johnson, Director /s/ JAMES R. SCOTT James R. Scott, Director /s/ JAMES R. SCOTT, JR. James R. Scott, Jr., Director /s/ JONATHAN R. SCOTT Jonathan R. Scott, Director /s/ JOHN M. HEYNEMAN, JR. John M. Heyneman, Jr., Director /s/ JOYCE A. PHILLIPS Joyce Phillips, Director /s/ PATRICIA L. MOSS Patricia L. Moss, Director /s/ ROSS E. LECKIE Ross E. Leckie, Director /s/ STEPHEN B. BOWMAN Stephen B. Bowman, Director /s/ KEVIN P. RILEY Kevin P. Riley President, Chief Executive Officer and Director (Principal executive officer) By: /s/ MARCY D. MUTCH Marcy D. Mutch Executive Vice President and Chief Financial Officer (Principal financial and accounting officer) 135 February 26, 2021 Date February 26, 2021 Date February 26, 2021 Date February 26, 2021 Date February 26, 2021 Date February 26, 2021 Date February 26, 2021 Date February 26, 2021 Date February 26, 2021 Date February 26, 2021 Date February 26, 2021 Date February 26, 2021 Date February 26, 2021 Date February 26, 2021 Date Member FDIC. Equal Housing Lender. _house_ © 2021 FIRST INTERSTATE BANCSYSTEM, INC. ALL RIGHTS RESERVED. firstinterstate.com 01138.RP.21.03

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