FSUN US Equity☆

Item 7.

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS OF FIRSTSUN

In this section, unless the context suggests otherwise, references to “we,” “us,” and “our” mean the combined business of FirstSun and its wholly-owned subsidiaries, Sunflower Bank, Logia Portfolio Management, LLC, and FEIF Capital Partners, LLC.

The following discussion is an analysis of our consolidated results of operations for the years ended December 31, 2023, 2022 and 2021, and financial condition for the years ended December 31, 2023 and 2022. This discussion and analysis should be read in conjunction with our consolidated financial statements and accompanying footnotes filed with this report in “Part II, Item 8. Financial Statements.” We have omitted discussion of 2021 results where it would be redundant to the discussion previously included in “Management’s Discussion and Analysis of Financial Condition and Results of Operations of FirstSun” section of our Annual Report on Form 10-K for the year ended December 31, 2022, filed with the SEC on March 16, 2023. Historical results of operations and the percentage relationships among any amounts included, and any trends that may appear, may not indicate trends in operations or results of operations for any future periods.

Comments regarding our business that are not historical facts are considered forward-looking statements that involve inherent risks and uncertainties. Actual results may differ materially from those contained in these forward-looking statements. For additional information regarding our cautionary disclosures, See the “Cautionary Note Regarding Forward-Looking Statements” beginning on page3of this report.

General Overview

FirstSun Capital Bancorp, headquartered in Denver, Colorado, is the financial holding company for Sunflower Bank, National Association, which is headquartered in Dallas, Texas and operates as Sunflower Bank, First National 1870 and Guardian Mortgage. We conduct a full-service community banking and trust business through our wholly-owned subsidiaries—Sunflower Bank, Logia Portfolio Management, LLC, and FEIF Capital Partners, LLC.

We offer a full range of relationship-focused services to meet our clients’ personal, business and wealth management financial objectives, with a branch network in Texas, Kansas, Colorado, New Mexico, and Arizona and mortgage capabilities in 43 states. Our product line includes commercial and industrial loans, commercial real estate loans, residential mortgage, public finance and other consumer loans, and a variety of commercial and consumer deposit products, including noninterest-bearing accounts, interest-bearing demand products, savings accounts, money market accounts and certificates of deposit. We also offer wealth management and trust products including personal trust and agency accounts, employee benefit and retirement related trust and agency accounts, investment management and advisory agency accounts, and foundation and endowment trust and agency accounts. We also offer online banking and bill payment services, online cash management, safe deposit box rentals, debit card and ATM card services and the availability of a network of ATMs for our customers.

We operate FirstSun through two operating segments: Banking and Mortgage Operations. We also allocate certain expenses to Corporate, which is not an operating segment. The expenses included in Corporate are not deemed to be allocable to our operating segments. The operating segments have been determined based on the products and services we offer and reflect the manner in which our financial information is evaluated by management. Each of the operating segments is complementary to each other and because of the interrelationship of the segments, the information presented is not indicative of how the segments would perform if they operated as independent entities. For additional information on our segments, see Note 23 - Segment Information included in our consolidated financial statements included elsewhere in this report.

Merger with Pioneer Bancshares, Inc.

On April 1, 2022, we completed our merger with Pioneer Bancshares, Inc. (“Pioneer”), pursuant to which Pioneer was merged with and into FirstSun, with FirstSun continuing as the surviving entity, and Pioneer’s wholly-owned subsidiary, Pioneer Bank, SSB, a Texas state savings bank, was merged with and into Sunflower Bank, with Sunflower Bank continuing as the surviving bank. With the acquisition, we acquired 19 branches in Texas. The results for Pioneer are reflected in our results of operations and financial condition since April 1, 2022. Further information is presented in Note 2 - Merger with Pioneer Bancshares, Inc. included in our consolidated financial statements included elsewhere in this report.

60

Table of Contents

Pending Merger with HomeStreet, Inc. and Common Equity Raise

On January 16, 2024, FirstSun and Seattle-based HomeStreet, Inc. (“HomeStreet”), the holding company of HomeStreet Bank (“HomeStreet Bank”) entered into a definitive merger agreement (the “merger agreement”). Under the merger agreement, HomeStreet will merge with and into FirstSun, with FirstSun continuing as the surviving entity. Immediately following the merger, HomeStreet Bank will merge with and into Sunflower Bank, with Sunflower Bank continuing as the surviving bank.

Subject to the terms and conditions of the merger agreement, at the effective time of the merger, each outstanding share of HomeStreet common stock will be converted into the right to receive 0.4345 of a share of FirstSun common stock. The combined entity is expected to have total assets of approximately $17 billion and 129 branch locations. The combined entity’s expanded footprint includes, FirstSun’s current presence in the Southwest and Midwest together with HomeStreet’s presence in Southern California, Hawaii and the Pacific Northwest.

The parties to the merger expect to complete the merger in the middle of 2024, subject to satisfaction of closing conditions, including receipt of customary required regulatory approvals and the approval of the merger agreement by the HomeStreet shareholders.

Concurrently with entry into the HomeStreet merger agreement, FirstSun entered into investment agreements with investors to raise capital to support the merger. In aggregate, $175 million of common stock will be issued to those investors: (a) $80 million of which was issued immediately following the merger announcement, and (b) the remaining $95 million of which will be issued substantially concurrently with, and subject to, the closing of the merger. The proceeds of this equity raise are expected to support the combined entity and result in capital ratios that exceed regulatory requirements.

For additional information on the proposed merger and equity raise, see Note 27 - Subsequent Events included in our consolidated financial statements included elsewhere in this report.

Financial Highlights For 2023

We delivered strong financial results in 2023, which included:

•Net income of $103.5 million, $4.08 per diluted share

•Net interest margin of 4.23%

•Return on average total assets of 1.38%

•Return on average stockholders’ equity of 12.50%

•Loan growth of 6.0%

•Average deposit growth of 9.7%

•21.2% fee revenue to total revenue1

Net income totaled $103.5 million, or $4.08 per diluted share, in 2023, compared to $59.2 million, or $2.48 per diluted share, in 2022. Net income in 2022 included merger costs, net of tax, of $17.0 million, or $0.72 per diluted share. There were no merger costs recorded in 2023. The return on average total assets was 1.38% in 2023, compared to 0.88% in 2022, and the return on average stockholders’ equity was 12.50% in 2023, compared to 8.55% in 2022. The unfavorable impact in 2022 of merger costs, net of tax, to return on average total assets was 0.25% and to return on average stockholders’ equity was 2.46%.

1Total revenue is net interest income plus noninterest income.

61

Table of Contents

Financial Highlights

The following table sets forth certain financial highlights of FirstSun as of and for the year ended December 31,:

($ in thousands, except share and per share amounts) 2023 2022 2021

Income Statement:

Per Common Share Data:

Cash dividends $ — $ — $ —

Dividend payout ratio — % — % — %

Performance Ratios:

Return on average total assets 1.38 % 0.88 % 0.79 %

Return on average stockholders' equity 12.50 % 8.55 % 8.37 %

Net interest margin (on FTE basis) (3) 4.29 % 3.95 % 3.11 %

Net charge-offs (recoveries) to average loans outstanding 0.13 % (0.01) % 0.09 %

Allowance for credit losses to loans 1.28 % 1.12 % 1.18 %

Nonperforming loans to total loans (2) 1.01 % 0.49 % 0.70 %

Balance Sheet:

Capital Ratios:

Total risk-based capital to risk-weighted assets 13.25 % 11.99 % 11.76 %

Tier 1 risk-based capital to risk-weighted assets 11.10 % 9.94 % 9.70 %

Common Equity Tier 1 (CET 1) to risk-weighted assets 11.10 % 9.94 % 9.70 %

Tier 1 leverage capital to average assets 10.52 % 9.71 % 8.24 %

Average stockholders' equity to average total assets 11.05 % 10.28 % 9.43 %

Nonfinancial Data:

62

Table of Contents

Non-GAAP Financial Measures and Reconciliations

The non-GAAP financial measures presented below are used by our management and our board of directors on a regular basis in addition to our GAAP results to facilitate the assessment of our financial performance. Management believes these non-GAAP financial measures enhance an investor’s understanding of our financial results by providing a meaningful basis for period-to-period comparisons, assisting in operating results analysis, and predicting future performance. This information supplements our GAAP reported results, and should not be viewed in isolation from, or as a substitute for, our GAAP results. Accordingly, this financial information should be read in conjunction with our consolidated financial statements and notes thereto for the year ended December 31, 2023, included elsewhere in this report. Non-GAAP financial measures exclude certain items that are included in the financial results presented in accordance with GAAP. Non-GAAP financial measures have inherent limitations, are not required to be uniformly applied, and are not audited. Although these non-GAAP financial measures are frequently used by investors to evaluate a company, they have limitations as analytical tools, and should not be considered in isolation, or as a substitute for analyses of results as reported under GAAP. These non-GAAP measures are not necessarily comparable to similar measures that may be represented by other companies.

The following table presents GAAP to non-GAAP reconciliations as of and for the year ended December 31,:

($ in thousands, except share and per share amounts) 2023 2022 2021

Tangible common stockholders’ equity and tangible book value per common share:

Less: Goodwill and other intangible assets

Tangible book value per common share (non-GAAP) $ 30.96 $ 26.69 $ 26.31

Tangible net income:

Return on average tangible common stockholders’ equity:

Less: Average goodwill and other intangible assets

Net interest margin - FTE basis:

Net interest margin - FTE basis (non-GAAP) 4.29 % 3.95 % 3.11 %

Tangible common stockholders’ equity to tangible assets:

Less: Goodwill and other intangible assets

63

Table of Contents

($ in thousands, except share and per share amounts) 2023 2022 2021

Less: Net unrealized losses on HTM securities, net of tax (3,629) (4,295) 447

Less: Net unrealized losses on HTM securities, net of tax (3,629) (4,295) 447

Net income excluding merger costs:

Add: Merger costs

Income tax effect on merger related expenses — (4,083) (509)

Provision for loan loss on Pioneer loans marked at a premium — 2,884 —

Return on average total assets excluding merger costs:

Return on average total assets (ROAA) (GAAP) 1.38 % 0.88 % 0.79 %

Add: Impact of merger costs, net of tax — % 0.25 % 0.05 %

ROAA excluding merger costs (non-GAAP) 1.38 % 1.13 % 0.84 %

Return on average stockholders’ equity excluding merger costs:

Return on average stockholders' equity (ROAE) (GAAP) 12.50 % 8.55 % 8.37 %

Add: Impact of merger costs, net of tax — % 2.46 % 0.50 %

ROAE excluding merger costs (non-GAAP) 12.50 % 11.01 % 8.87 %

Efficiency ratio excluding merger related expenses:

Less: Impact of merger related expenses — % (5.66) % (1.11) %

Diluted earnings per share excluding merger costs:

Diluted earnings per share (GAAP) $ 4.08 $ 2.48 $ 2.30

Add: Impact of merger costs, net of tax — 0.72 0.14

Segments

Our operations are conducted through two operating segments: Banking and Mortgage Operations. We also allocate certain expenses to Corporate, which is not an operating segment. The operating segments have been determined based on the products and services we offer and reflect the manner in which our financial information is currently evaluated by management. Each of the operating segments is complementary to each other and because of the interrelationship of the segments, the information presented is not indicative of how the segments would perform if they operated as independent entities. For additional information on our segments, see Note 23 - Segment Information included in our audited consolidated financial statements included elsewhere in this report.

Comparison of fiscal years 2023 and 2022

Banking

Income before income taxes increased $58.6 million to $147.2 million in 2023, from $88.5 million in 2022. The period over period increase was primarily driven by an increase in net interest income and to a lesser extent noninterest income and a reduction in noninterest expense, partially offset by an increase in provision for credit losses. Net interest income increased $50.7 million to $292.6 million in 2023 compared to $241.8 million in 2022. The increase in net interest income was primarily due to organic growth in our loan portfolios and an increase in net interest margin. Noninterest expense

64

Table of Contents

decreased $3.1 million to $175.7 million in 2023, compared to $178.8 million in 2022. The decrease in noninterest expense was primarily the result of the absence of merger costs in 2023 compared to $18.8 million ($0.62 diluted earnings per share) in merger-related expenses incurred in 2022 related to the Pioneer merger, partially offset by an increase in salary and employee benefits of $11.7 million and an increase of $3.1 million in occupancy expenses in 2023. Provision for credit losses increased $1.0 million to $15.8 million in 2023 compared to $14.8 million in 2022. The increase in the provision for credit losses was attributed to both organic loan growth and our implementation of a new allowance for credit loss methodology in 2023. For additional information on our new allowance for credit loss methodology see “Critical Accounting Estimates” below. Identifiable assets for our Banking segment grew by $0.3 billion to $6.9 billion at December 31, 2023 from $6.6 billion at December 31, 2022. The growth in identifiable assets was primarily driven by organic growth in our loan portfolios.

Mortgage Operations

Loss before income taxes increased to $6.5 million in 2023, compared to a loss of $4.6 million in 2022, primarily due to a $16.3 million decrease in mortgage banking services revenue, net, partially offset by a $13.1 million decrease in salary and employee benefits expenses from the decline in mortgage loan originations and reductions in staffing levels. MSR capitalization and changes in fair value, net of derivative activity, decreased $10.8 million for the year ended December 31, 2023, compared to 2022. The decrease in revenue related to our MSRs was primarily the result of market interest rate movement and the impact to fair values and overall origination activity, which led to a year over year decline in the net fair value for MSRs and the related derivative activity of $5.8 million, as the total fair value change for 2023 for MSRs, net of derivative activity, was a loss of $1.1 million. The year over year decline in capitalized servicing value for MSRs was $5.0 million. Overall gains on sale of mortgage loans declined by $4.6 million as a result of the decline in origination activity, continued margin compression, and a decline in the rate lock pipeline volume and valuation due to rising interest rates. Total loan originations for sale were $0.8 billion in 2023, a decline of $0.3 billion from $1.1 billion in 2022. The decline in gains from mortgage loan sales was partially offset by a $0.6 million increase in servicing fee income related to our mortgage servicing rights (“MSRs”), resulting from an increase of $0.2 billion in 2023 of the unpaid principal balance of loans serviced to $5.4 billion, from $5.2 billion in 2022.

Critical Accounting Estimates

In preparing the consolidated financial statements, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the date of the balance sheet and revenues and expenses for the period. Our accounting and reporting estimates are in accordance with generally accepted accounting principles, or “U.S. GAAP,” and conform to general practices within the banking industry. Estimates that are susceptible to significant changes include accounting for the allowance for credit losses and fair value measurements, both of which require significant judgments by management. Actual results could result in material changes to our consolidated financial condition or consolidated results of operations.

Certain policies inherently have a greater reliance on the use of estimates, assumptions and judgments and, as such, have a greater possibility of producing results that could be materially different than originally reported. We have identified the determination of the allowance for credit losses and fair value measurements to be the accounting areas that require the most subjective or complex judgments and, as such, could be most subject to revision as new or additional information becomes available or circumstances change, including overall changes in the economic climate and/or market interest rates. Therefore, we consider these policies to be critical accounting estimates and discuss them directly with the Audit Committee of our board of directors. During the year ended December 31, 2023, we adopted ASU 2016-13, Financial Instruments-Credit Losses: Measurement of Credit Losses on Financial Instruments which required a change to our estimate of the allowance for credit losses.

These critical accounting estimates and their application are reviewed at least annually by our audit committee. The following is a description of our critical accounting estimates and an explanation of the methods and assumptions underlying their application.

Allowance for Credit Losses - Management maintains an ACL for loans based upon management’s estimate of the lifetime expected credit losses in the loan portfolio, as of the balance sheet date, excluding loans held for sale. Additionally, management maintains an ACL for held-to-maturity or available-for-sale debt securities, and other off-balance sheet credit exposures (e.g., unfunded loan commitments). For loans and unfunded loan commitments, the estimate of lifetime credit losses includes the use of quantitative models that incorporate forward-looking macroeconomic scenarios that are applied over the contractual lives of the portfolios, adjusted, as appropriate, for prepayments and permitted extension options using historical experience. For purposes of the ACL for lending commitments, such allowance is determined using the same

65

Table of Contents

methodology as the ACL for loans, while also taking into consideration the probability of drawdowns or funding, and whether such commitments are cancellable by us. The ACL for held-to-maturity and available-for-sale debt securities is measured using a risk-adjusted discounted cash flow approach that also considers relevant current and forward-looking economic variables and the ACL is limited to the difference between the fair value of the security and its amortized cost. Judgment is specifically applied in the determination of economic assumptions, length of the initial loss forecast period, the reversion of losses beyond the initial forecast period, usage of macroeconomic scenarios, probabilities of default, losses given default, amortization and prepayment rates, and qualitative factors, which may not be adequately captured in the loss model, as further discussed below.

The macroeconomic scenarios utilized by management include variables that have historically been key drivers of increases and decreases in credit losses. These variables include, but are not limited to, unemployment rates, housing and commercial real estate prices, gross domestic product levels, corporate bond spreads and changes in equity market prices. Management derives the economic forecasts it uses in its ACL model from Moody’s Analytics. The latter has a large team of economics, database managers and operational engineers with a history of producing monthly economic forecasts for over 25 years.

Management has currently set an initial forecast period (“reasonable and supportable period”) of four years and a reversion period of one year, utilizing a straight-line approach and reverting back to the historical macroeconomic mean. After the reversion period, a historical loss forecast period covering the remaining contractual life, adjusted for prepayments, is used based on changes in key historical economic variables during representative historical expansionary and recessionary periods. Changes in economic forecasts impact the probability of default (“PD”), loss-given default (“LGD”), and exposure at default (“EAD”) for each instrument, and therefore influence the amount of future cash flows for each instrument that management does not expect to collect.

Further, management periodically considers the need for qualitative adjustments to the ACL. Qualitative adjustments may be related to and include, but not limited to, factors such as the following: (i) management’s assessment of economic forecasts used in the model and how those forecasts align with management’s overall evaluation of current and expected economic conditions; (ii) organization specific risks such as credit concentrations, collateral specific risks, nature, and size of the portfolio and external factors that may ultimately impact credit quality, and (iii) other limitations associated with factors such as changes in underwriting and loan resolution strategies, among others. The qualitative factors applied on January 1, 2023, and December 31, 2023, and the importance and levels of the qualitative factors applied, may change in future periods depending on the level of changes to items such as the uncertainty of economic conditions and management’s assessment of the level of credit risk within the loan portfolio as a result of such changes, compared to the amount of ACL calculated by the model. The evaluation of qualitative factors is inherently imprecise and requires significant management judgement.

The ACL can also be impacted by factors outside of management’s control, which include unanticipated changes in asset quality of the portfolio, such as deterioration in borrower delinquencies, or credit scores in our residential real estate and consumer portfolio. Further, the current fair value of collateral is utilized to assess the expected credit losses when a financial asset is considered to be collateral dependent.

Our process for determining ACL is further discussed in “Note 1- Basis of Presentation, Description of Business and Summary of Significant Accounting Policies” included in Item 8 of this Form 10-K.

Additionally, as an “emerging growth company” under Section 107 of the JOBS Act, we did not to adopt ASU 2016-13, Financial Instruments - Credit Losses (Topic 326) (CECL) until January 1, 2023. As such, our allowance for credit losses for years prior to 2023 may not be comparable to other public financial institutions that adopted CECL in an earlier year.

Fair Value Measurement of MSRs - Our residential mortgage servicing rights are measured at fair value on a recurring basis. We estimate the fair value of our MSRs using a process that utilizes a discounted cash flow model and analysis of current market data to arrive at the estimate. The cash flow assumptions used in the model are based on numerous factors, with the key assumptions being mortgage prepayment speeds, discount rates and cost to service that management believes are consistent with the assumptions that other similar market participants use in valuing MSRs. The change of any of these key assumptions due to market conditions or other factors could materially affect the fair value of our MSRs. We also utilize a third-party consulting firm to assist us with the valuation. Because of the nature of the valuation inputs, we classify the valuation of our MSRs as Level 3 in the fair value hierarchy. See Note 5 - Mortgage Servicing Rights included in our audited consolidated financial statements included elsewhere in this report for our assumptions used in valuing the MSRs. For information concerning the hypothetical sensitivity of the key assumptions under adverse changes on our MSRs, see

66

Table of Contents

the table under “Noninterest Income” elsewhere in the Management’s Discussion and Analysis of Financial Condition and Results of Operations in this report.

Results of Operations

Comparison of fiscal years 2023 and 2022

The follow table sets forth our results of operations as of and for the year ended December 31,:

Diluted earnings per share $ 4.08 $ 2.48 $ 2.30

Return on average total assets 1.38 % 0.88 % 0.79 %

Return on average stockholders' equity 12.50 % 8.55 % 8.37 %

Net interest margin (FTE basis) (1) 4.29 % 3.95 % 3.11 %

Noninterest income to total revenue (2) 21.2 % 27.0 % 44.5 %

General

Our results of operations depend significantly on net interest income, which is the difference between interest income on interest-earning assets, consisting primarily of interest income on loans and investment securities and interest expense on interest-bearing liabilities, consisting primarily of deposits and borrowings. Our results of operations are also dependent on our generation of noninterest income, consisting primarily of income from mortgage banking services, service charges on deposit accounts, trust and investment advisory fees and credit and debit card fees. Other factors contributing to our results of operations include our provisions for credit losses, income taxes, and noninterest expenses, such as salaries and employee benefits, occupancy and equipment, amortization of intangible assets and other operating costs.

Net Interest Income

Net interest income, representing interest income less interest expense, is a significant contributor to our revenues and earnings. We generate interest income from interest and dividends on interest-earning assets, which are principally comprised of loans and investment securities. We incur interest expense from interest owed or paid on interest-bearing liabilities, including interest-bearing deposits, FHLB advances and other borrowings. Net interest income and margin are shaped by the characteristics of the underlying products, including volume, term and structure of each product. We measure and monitor yields on our loans and other interest-earning assets, the costs of our deposits and other funding sources, our net interest spread and our net interest margin. Net interest spread is the difference between rates earned on interest-earning assets and rates paid on interest-bearing liabilities. Net interest margin is calculated as net interest income divided by average interest-earning assets.

Interest earned on our loan portfolio is the largest component of our interest income. Our loan portfolios are presented at the principal amount outstanding net of deferred origination fees and unamortized discounts and premiums. Interest income is recognized based on the principal balance outstanding and the stated rate of the loan. Loan origination fees and certain direct origination costs are capitalized and recognized as an adjustment of the yield on the related loan. Non-PCD loans acquired are initially recorded at fair value and the resulting discount or premium are recognized as an adjustment of the yield on the related loans.

Our net interest income can be significantly influenced by a variety of factors, including overall loan demand, economic conditions, credit risk, the amount of non-earning assets including nonperforming loans and OREO, the amounts of and

67

Table of Contents

rates at which assets and liabilities reprice, variances in prepayment of loans and securities, exercise of call options on borrowings or securities, a general rise or decline in interest rates, changes in the slope of the yield-curve, and balance sheet growth or contraction.

Our net interest income was $293.4 million for the year ended December 31, 2023, an increase of $51.8 million, or 21.4%, from 2022. Interest income on loans increased by $137.6 million for the year ended December 31, 2023, from 2022. Interest income on investment securities increased by $3.8 million for the year ended December 31, 2023, from 2022. Interest expense from total interest-bearing liabilities increased by $95.1 million for the year ended December 31, 2023, from 2022.

Total average loans, including loans held-for-sale grew to $6.2 billion at December 31, 2023, an increase of $1.0 billion, compared to December 31, 2022, primarily due to organic growth in our loan portfolios. Yield on loans held-for-investment increased 149 basis points for the year ended December 31, 2023, from 2022, primarily due to the rising interest rate environment and its impact on variable rate loans in the loan portfolio and higher yields on new originations.

Average interest-bearing liabilities increased $0.7 billion, or 17.5%, for the year ended December 31, 2023, from 2022 primarily to support the growth in our loan portfolio. Average interest-bearing deposits increased $0.7 billion, or 18.5%, for the year ended December 31, 2023, from 2022, with organic growth as the primary driver. Total cost of deposits increased by 192 basis points to 2.27% in 2023 compared to 2022, primarily due to increased pricing on our deposit products as a result of the rising interest rate environment. Average FHLB borrowings increased $54.4 million in 2023, compared to 2022. The cost of FHLB borrowings increased by 216 basis points to 5.05% in 2023, compared to 2022, also due to the rising interest rate environment.

Our net interest margin was 4.23% for the year ended December 31, 2023, compared to 3.87% for the same period in 2022, an increase of 36 basis points. We experienced a 169 basis point increase in yield from earning assets and our total cost of funds increased by 187 basis points for the year ended December 31, 2023, compared to the same period in 2022. While we have experienced a significant increase in our cost of funds in this rising interest rate environment, we do not expect our cost of funds to continue to rise in 2024 at the level of increase experienced in 2023.

68

Table of Contents

The following tables set forth information related to our average balance sheet, average yields on assets, and average costs of liabilities for the periods presented. We derived these yields by dividing income or expense by the average balance of the corresponding assets or liabilities. We derived average balances from the daily balances throughout the periods indicated.

As of and for the year ended December 31,:

Interest Earning Assets

Interest-bearing liabilities

Net interest margin (on a FTE basis) (2) 4.29 % 3.95 % 3.11 %

69

Table of Contents

Rate-Volume Analysis

The tables below present the effect of volume and rate changes on interest income and expense. Changes in volume are changes in the average balance multiplied by the previous period’s average rate. Changes in rate are changes in the average rate multiplied by the average balance from the current period. The net changes attributable to the combined impact of both rate and volume have been allocated proportionately to the changes due to volume and the changes due to rate.

For the year ended December 31, For the year ended December 31,

(In thousands) Rate Volume Total Rate Volume Total

Interest Earning Assets

Interest-bearing liabilities

Provision for Credit Losses

We established an allowance for credit losses through a provision for credit losses charged as an expense in our consolidated statements of income. The provision for credit losses is the amount of expense that, based on our judgment, is required to maintain the allowance for credit losses at an adequate level to absorb expected losses in the loan portfolio at the balance sheet date and that, in management’s judgment, is appropriate under GAAP. Our determination of the amount of the allowance for credit losses and corresponding provision for credit losses considers ongoing evaluations of the credit quality and level of credit risk inherent in our loan portfolio, levels of nonperforming loans and charge-offs, statistical trends and economic and other relevant factors. The allowance for credit losses is increased by the provision for credit losses and is decreased by charge-offs, net of recoveries on prior loan charge-offs

We had a provision for credit losses of $18.2 million for the year ended December 31, 2023, compared to a provision for credit losses of $18.1 million for 2022. During 2022, our provision for credit losses was negatively impacted by $2.9 million for certain non-impaired loans acquired in the Pioneer Merger at a premium valuation. Upon elimination of the $2.9 million merger related provision for 2022, the adjusted increase in the provision for credit losses is $3.1 million for 2023. This adjusted increase is primarily due to loan growth and the charge-offs of two specific customer relationships in our loan portfolio.

For a further discussion of the allowance for credit losses, refer to the “Allowance for Credit Losses” section of this financial review.

70

Table of Contents

Noninterest Income

The following table presents noninterest income for the year ended December 31,:

Our noninterest income decreased $10.5 million to $79.1 million for the year ended December 31, 2023 from $89.6 million in 2022, primarily due to a decrease in income from mortgage banking services, net.

Service charges on deposit accounts includes overdraft and non-sufficient funds charges, treasury management services provided to our business customers, and other maintenance fees on deposit accounts. For the year ended December 31, 2023, service charges on deposit accounts increased $3.1 million, primarily due to growth in treasury management services provided to our business customers, as compared to 2022.

Credit and debit card fees represent interchange income from credit and debit card activity and referral fees earned from processing fees on card transactions by our business customers. Credit and debit card fees increased $0.5 million for the year ended December 31, 2023 compared to 2022, primarily due to increased card transaction volumes.

Trust and investment advisory fees represent fees we receive in connection with our investment advisory and custodial management services of investment accounts. Trust and investment advisory fees decreased $1.1 million for the year ended December 31, 2023 compared to 2022 primarily due to lower average assets under management.

The components of income from mortgage banking services, net, were as follows for the year ended December 31,:

For the year ended December 31, 2023, income from mortgage banking services decreased $14.9 million, compared to 2022. We experienced a decline in revenue related to net sale gains and fees from mortgage loan originations, including fair value changes in the held-for-sale portfolio and hedging activity, which decreased $4.6 million for the year ended December 31, 2023, compared to 2022. Total loan originations for sale were $0.8 billion for the year ended December 31, 2023, a decline of $0.3 billion from $1.1 billion in 2022. We retain servicing rights on the majority of mortgage loans that we sell, which drove the increase in servicing income of $0.6 million to $15.7 million for the year ended December 31, 2023, from $15.1 million for 2022. MSR capitalization and changes in fair value, net of derivative activity, decreased $10.8 million for the year ended December 31, 2023, compared to 2022. The decrease in revenue related to our MSRs was primarily the result of market interest rate movement and the impact to fair values and overall origination activity, which led to a year over year decline in the net fair value for MSRs and the related derivative activity of $5.8 million, as the total fair value change for 2023 for MSRs, net of derivative activity, was a loss of $1.1 million. The year over year decline in capitalized servicing value for MSRs was $5.0 million. We recognize fair value adjustments to our MSR asset, which includes changes in assumptions to the valuation model and pay-offs and pay-downs of the MSR portfolio. See the impact of changes to our key MSR valuation assumptions in the table below.

71

Table of Contents

The following table shows the hypothetical effect on the fair value of our MSRs when applying certain unfavorable variations of key assumptions to these assets as of December 31, 2023.

(In thousands) 10% 20%

Cost of servicing each loan (1,324) (2,193)

These hypothetical sensitivities should be evaluated with care. The effect on fair value of an adverse change in assumptions generally cannot be determined because the relationship of the change in assumptions to the fair value may not be linear. Additionally, the impact of a variation in a particular assumption on the fair value is calculated while holding other assumptions constant. In reality, changes in one factor may lead to changes in other factors, which could impact the above hypothetical effects.

We also maintain a hedging strategy to manage a portion of the risk associated with changes in the fair value of our MSR portfolio. Changes in fair value of the derivative instruments used to economically hedge the MSRs are also included as a component of income from mortgage banking services. Due to a number of factors, including the overall elevated level of interest rates, low inventory in the housing market, lower refinance volumes and lower margin on loans sales, we expect revenue from mortgage banking activities to remain at a lesser level as compared to levels we experienced during the lower market rate environment experienced during 2021 and 2020.

Other noninterest income increased $1.9 million for the year ended December 31, 2023 compared to 2022, primarily due to an increase in the fair value of investments related to our deferred compensation plan.

Noninterest Expense

The following table presents noninterest expense for the year ended December 31,:

Our noninterest expenses decreased $16.3 million to $222.8 million for the year ended December 31, 2023, from $239.1 million for 2022. The decrease is primarily due to the decrease of $18.8 million in merger related expenses. We incurred no merger related expenses for the year ended December 31, 2023. Our merger with Pioneer was completed on April 1, 2022.

The decrease of $1.1 million in our salary and employee benefits expense for the year ended December 31, 2023, compared to 2022, was driven by a decrease in commissions paid to our mortgage loan officers related to decreased mortgage origination activity during 2023, partially offset by annual compensation increases occurring in 2023.

Occupancy and equipment increased $2.1 million for the year ended December 31, 2023, compared to 2022. This increase was primarily due to having a full year of expenses related to the facilities acquired in the Pioneer merger in 2023 compared to only nine months in 2022.

Income Taxes

We had income tax expense for the year ended December 31, 2023 of $28.0 million, compared to $14.8 million in 2022. The increase in income tax expense was primarily due to our increased income during 2023. Our effective tax rate was 21.3% for the year ended December 31, 2023, compared to 20.0% in 2022. For additional information on our income taxes, see Note 17 - Income Taxes included in our audited consolidated financial statements included elsewhere in this report.

72

Table of Contents

Financial Condition

Balance Sheet

Our total assets were $7.9 billion at December 31, 2023, compared to $7.4 billion at December 31, 2022. Our total loans held-for-investment, net of deferred fees, costs, premiums and discounts were $6.3 billion at December 31, 2023, an increase of $0.4 billion from 2022, which was due to organic growth.

Investment Securities

Our securities portfolio is used to make various term investments, maintain a source of liquidity and serve as collateral for certain types of deposits and borrowings. We manage our investment portfolio according to written investment policies approved by our board of directors. Investment in our securities portfolio may change over time based on our funding needs and interest rate risk management objectives. Our liquidity levels take into account anticipated future cash flows and other available sources of funds, and are maintained at levels that we believe are appropriate to provide the necessary flexibility to meet our anticipated funding requirements.

Our investment securities portfolio consists of securities classified as available-for-sale and held-to-maturity. There were no trading securities in our investment portfolio as of December 31, 2023 and 2022. All available-for sale securities are carried at fair value and may be used for liquidity purposes should management consider it to be in our best interest.

Our securities available-for-sale decreased by $20.2 million to $516.8 million at December 31, 2023, compared to December 31, 2022. The decrease was primarily due to amortization of the portfolio and a decrease in fair value due to the rising interest rate environment. Securities held-to-maturity decreased $1.9 million to $37.0 million at December 31, 2023, compared to December 31, 2022, due to amortization of the portfolio.

The following table is a summary of our investment portfolio as of December 31,:

(In thousands) Carrying Amount % of Portfolio Carrying Amount % of Portfolio

Available-for-sale:

Obligations of states and political subdivisions 25,970 5.0 % 24,899 4.6 %

Held-to-maturity:

73

Table of Contents

The following tables show the weighted average yield to average life of each category of investment securities as of December 31, 2023:

Available-for-sale:

Held-to-maturity:

Collateralized mortgage obligations — — % 1,941 2.67 % 1,952 3.13 % — — %

We had no securities of any one issuer, other than the U.S. Government and its agencies, in an amount greater than 10% of stockholders’ equity.

74

Table of Contents

Loans

Our loan portfolio represents a broad range of borrowers primarily in our markets in Texas, Kansas, Colorado, New Mexico and Arizona, primarily comprised of commercial and industrial, commercial real estate, residential real estate, public finance and consumer financing loans. We have a diversified portfolio across a variety of industries, and the portfolio is generally centered in the states in which we have branch offices. Our lending focus continues to be on operating companies, including commercial and industrial loans and lines-of-credit, as well as owner occupied commercial real estate loans.

Total loans, net of deferred origination fees, premiums and discounts, as of December 31, 2023 and 2022 were $6.3 billion and $5.9 billion, respectively.

The following table sets forth the composition of our loan portfolio, as of December 31,:

(In thousands) Amount % of total loans Amount % of total loans

Commercial real estate:

Commercial and industrial loans include loans to commercial customers for use in normal business operations to finance working capital needs, equipment and inventory purchases, and other expansion projects. These loans are made primarily in our market areas and are underwritten on the basis of the borrower’s ability to service the debt from revenue, and are generally extended under our normal credit standards, controls and monitoring systems.

Commercial real estate (“CRE”) loans include owner occupied and non-owner occupied commercial real estate mortgage loans to operating commercial and agricultural businesses, and include both loans for long-term financing of land and buildings and loans made for the initial development or construction of a commercial real estate project. Non-owner occupied CRE loans were 85.2% of the Company’s risk-based capital, or 13.0% of total loans as of December 31, 2023. Non-owner occupied CRE loans associated with office space were $109.3 million, or 1.7% of total loans as of December 31, 2023. Owner occupied CRE loans associated with office space were $149.4 million, or 2.4% of total loans as of December 31, 2023.

Residential real estate loans represent loans to consumers collateralized by a mortgage on a residence and include purchase money, refinancing, secondary mortgages, and home equity loans and lines of credit.

Public finance loans include loans to our charter school and municipal based customers.

Consumer loans include direct consumer installment loans, credit card accounts, overdrafts and other revolving loans.

Other loans consist of loans to nondepository financial institutions, lease financing receivables and loans for agricultural production.

Maturities and Sensitivity of Loans to Changes in Interest Rates

The information in the following tables is based on the contractual maturities of individual loans, including loans that may be subject to renewal at their contractual maturity. Renewal of these loans is subject to review and credit approval, as well as modification of terms upon maturity. Actual repayments of loans may differ from the maturities reflected below because

75

Table of Contents

borrowers have the right to prepay obligations with or without prepayment penalties. The following tables summarize the loan maturity distribution by type and related interest rate characteristics as of December 31, 2023:

Loans maturing with:

Fixed interest rates

Floating or adjustable interest rates

Allowance for Credit Losses

We maintain the allowance for credit losses at a level we believe is sufficient to absorb expected losses in our loan portfolio given the conditions at the time and our estimates of future economic conditions. Events that are not within our control, such as changes in economic factors, could change subsequent to the reporting date and could cause increases or decreases to the allowance. The amount of the allowance is affected by loan charge-offs, which decrease the allowance; recoveries on loans previously charged off, which increase the allowance; and the provision for credit losses charged to earnings, which increases the allowance.

In determining the provision for credit losses, management monitors fluctuations in the allowance resulting from actual charge-offs and recoveries and reviews the size and composition of the loan portfolio in light of current and anticipated economic conditions. This evaluation is inherently subjective as it requires estimates that are susceptible to significant revision as more information becomes available or as events change.

76

Table of Contents

The following table presents, by loan type, the changes in the allowance for credit losses for the years ended December 31,:

Impact of adopting ASC 326 5,256 — —

Loan charge-offs:

Commercial real estate (83) — (375)

Residential real estate (13) (122) (42)

Public finance — — —

Other — — —

Recoveries of loans previously charged-off:

Public finance — — —

Other — — —

Allowance for credit losses to total loans 1.28 % 1.12 % 1.18 %

The following table presents net charge-offs (recoveries) to average loans outstanding by loan category for the years ended December 31,:

Commercial and industrial 0.30 % — % 0.19 %

Commercial real estate — % (0.03) % 0.03 %

Residential real estate (0.07) % (0.01) % — %

Public finance — % — % — %

Other — % — % — %

77

Table of Contents

Allocation of Allowance for Credit Losses

The following table presents the allocation of the allowance for credit losses by category and the percentage of the allocation of the allowance for credit losses by category to total loans listed as of December 31,:

Nonperforming Assets

We have established policies and procedures to guide us in originating, monitoring and maintaining the credit quality of our loan portfolio. These policies and procedures are expected to be followed by our bankers and underwriters and exceptions to these policies require elevated levels of approval and are reported to our board of directors.

Nonperforming assets include all loans categorized as nonaccrual, accrual loans greater than 90 days past due, and other real estate owned and other repossessed assets. The accrual of interest on loans is discontinued, or the loan is placed on nonaccrual, when the full collection of principal and interest is in doubt. We do not generally accrue interest on loans that are 90 days or more past due. When a loan is placed on nonaccrual, previously accrued but unpaid interest is reversed and charged against interest income and future accruals of interest are discontinued. Payments by borrowers for loans on nonaccrual are applied to loan principal. Loans are returned to accrual status when, in our judgment, the borrower’s ability to satisfy principal and interest obligations under the loan agreement has improved sufficiently to reasonably assure recovery of principal and the borrower has demonstrated a sustained period of repayment performance. In general, we require a minimum of six consecutive months of timely payments in accordance with the contractual terms before returning a loan to accrual status.

78

Table of Contents

The following table sets forth our nonperforming assets as of December 31,:

Nonaccrual loans:

Commercial and industrial $ 8,004 $ 9,494

Accrual loans greater than 90 days past due (1) 25,816 98

Other real estate owned and foreclosed assets, net 4,100 6,358

Nonaccrual loans to total loans 0.60 % 0.49 %

Nonperforming loans to total loans (3) 1.01 % 0.49 %

Nonperforming assets to total assets (3) 0.85 % 0.48 %

Allowance for credit losses to nonaccrual loans 215.39 % 227.54 %

Deposits

Deposits represent our primary source of funds. Total deposits increased by $0.6 billion to $6.4 billion at December 31, 2023, compared to December 31, 2022.

We are focused on growing our core deposits through relationship-based banking with our business and consumer clients. The following table presents our deposits by customer type as of December 31,:

Consumer

Interest-bearing deposit accounts:

Business

Interest-bearing deposit accounts:

79

Table of Contents

Noninterest-bearing demand deposit accounts $ 1,678,240 — % $ 1,835,578 — %

Interest-bearing deposit accounts:

As of December 31, 2023 and December 31, 2022, approximately $2.0 billion or 31.2% and $2.4 billion or 41.6%, respectively, of our deposit portfolio was uninsured. As of December 31, 2023 and December 31, 2022, approximately $1.6 billion or 25.1% and $1.7 billion or 28.7%, respectively, of our deposit portfolio was uninsured and uncollateralized. The uninsured and uninsured and uncollateralized amounts are estimates based on the methodologies and assumptions used for the Bank's regulatory reporting requirements.

We actively participate in the IntraFi Cash Service (“ICS”) / Certificate of Deposit Account Registry Service (“CDARS”) program which provides FDIC insurance coverage for clients that maintain larger deposit balances. Deposits in the ICS / CDARS program totaled $0.6 billion, or 9.2% of all deposits as of December 31, 2023, and $0.2 billion, or 4.1% of all deposits as of December 31, 2022.

Maturities of certificates of deposit that are in excess of the FDIC insurance limit of $250,000, by remaining time to maturity are summarized as follows as of December 31,:

Over twelve months through three years 36,673 75,804

The following table sets forth the portion of the Bank's time deposits, by account, that are in excess of the FDIC insurance limit, by remaining time until maturity, as of December 31,:

Three months or less $ 54,875

Over three months through six months 30,141

Over six through twelve months 173,642

Over twelve months through three years 20,957

Over three years 439

Liquidity

Liquidity refers to our ability to maintain cash flow that is adequate to fund operations, support asset growth, maintain reserve requirements and meet present and future obligations of deposit withdrawals, lending obligations and other contractual obligations.

FirstSun (Parent Company)

FirstSun has routine funding requirements consisting primarily of operating expenses, debt service, and funds used for acquisitions. FirstSun can obtain funding to meet its obligations from dividends collected from its subsidiaries, primarily the Bank, and through the issuance of varying forms of debt. At December 31, 2023, FirstSun had available cash and cash equivalents of $34.1 million and debt outstanding of $78.9 million. Management believes FirstSun has the ability to generate and obtain adequate amounts of liquidity to meet its requirements in the short-term and the long-term.

80

Table of Contents

Federal banking laws regulate the amount of dividends that may be paid by banking subsidiaries without prior approval. The Bank may declare dividends without prior regulatory approval that do not exceed the total of retained net income for the current year combined with its retained net income for the preceding two years, subject to maintenance of minimum capital requirements. Prior regulatory approval to pay dividends was not required in 2022 or 2023 and is not currently required. At December 31, 2023, the Bank could pay dividends to FirstSun of approximately $199.0 million without prior regulatory approval. During the year ended December 31, 2023, the Bank paid dividends totaling $26.0 million to FirstSun. During the year ended December 31, 2023, Logia paid dividends totaling $0.6 million to FirstSun.

Bank

The Bank’s liquidity management policy and our asset and liability management policy, or ALM policy, provides the framework that we use to seek to maintain adequate liquidity and sources of available liquidity at levels that will enable us to meet all reasonably foreseeable short-term, long-term and strategic liquidity demands. Our Asset and Liability Management Committee, or ALCO, is responsible for oversight of our liquidity risk management activities in accordance with the provisions of our ALM Policy and applicable bank regulatory capital and liquidity laws and regulations. Our liquidity risk management process includes (i) ongoing analysis and monitoring of our funding requirements under various economic and interest rate scenarios, (ii) review and monitoring of lenders, depositors, brokers and other liability holders to ensure appropriate diversification of funding sources and (iii) liquidity contingency planning to address liquidity needs in the event of unforeseen market disruption, including appropriate allocation of funds to a liquid portfolio of marketable securities and investments. We continuously monitor our liquidity position in order for our assets and liabilities to be managed in a manner that we believe will meet our immediate and long-term funding requirements. We seek to manage our liquidity position to meet the daily cash flow needs of customers, while maintaining an appropriate balance between assets and liabilities to meet the return on investment objectives of our stockholders. We also monitor our liquidity requirements in light of interest rate trends, changes in the economy, and the scheduled maturity and interest rate sensitivity of our securities and loan portfolios and deposits. Liquidity management is made more complicated because different balance sheet components are subject to varying degrees of management control. For example, the timing of maturities of our investment portfolio is fairly predictable and subject to a high degree of control when we make investment decisions. Net deposit inflows and outflows, however, are far less predictable and are not subject to the same degree of certainty.

Our liquidity position is supported by management of our liquid assets and liabilities and access to alternative sources of funds. 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 and capital expenditures. These liquidity requirements are met primarily through our deposits, FHLB advances and the principal and interest payments we receive on loans and investment securities. Cash, interest-bearing deposits in third-party banks, securities available for sale and maturing or prepaying balances in our investment and loan portfolios are our most liquid assets. Other sources of liquidity that are available to us include the sale of loans we hold for investment, the ability to acquire additional national market non-core deposits, borrowings through the Federal Reserve’s discount window and the issuance of debt or equity securities.

At December 31, 2023, our liquid assets, which consist of cash and amounts due from banks and interest-bearing deposits in other financial institutions, amounted to $473.0 million, or 6.0% of total assets, compared to $307.9 million, or 4.1% of total assets, at December 31, 2022. The increase in our liquid assets was primarily due to an increase in cash held at the Federal Reserve. At December 31, 2023, approximately 85% of the investment securities portfolio was pledged as collateral to secure public deposits and repurchase agreements. Our unencumbered available-for-sale securities at December 31, 2023 were $81.5 million, or 1.0% of total assets, compared to $120.4 million, or 1.6% of total assets, at December 31, 2022.

The liability portion of our balance sheet serves as a primary source of liquidity. We plan to meet our future cash needs primarily through the generation of deposits. Customer deposits have historically provided a sizeable source of relatively stable and low-cost funds. At December 31, 2023, loans as a percentage of customer deposits were 98.3%, compared with 102.5% at December 31, 2022. For additional information related to our deposits, see Deposits section above. We are also a member of the FHLB and FRB, from which we can borrow for leverage or liquidity purposes. The FHLB and FRB requires that securities and qualifying loans be pledged to secure any advances. Liquidity sources available to us for immediate funding at December 31, 2023, are as follows:

FHLB borrowings available $ 706,367

Unused lines with other financial institutions 309,917

Immediate funding availability $ 3,044,694

81

Table of Contents

Management believes the Bank has the ability to generate and obtain adequate amounts of liquidity to meet its requirements in the short-term and the long-term.

Capital

Stockholders’ equity at December 31, 2023 was $877.2 million, compared to $774.5 million at 2022, an increase of $102.7 million, or 13.3%. The increase in stockholders’ equity relates primarily to net income for the year ended December 31, 2023. We did not pay a dividend to our common shareholders during the years ended December 31, 2023 or 2022.

Capital Adequacy

We are subject to various regulatory capital requirements administered by the federal banking agencies. Management routinely analyzes our capital to seek to ensure an optimized capital structure. For further information on capital adequacy see Note 19 - Regulatory Capital Matters to the consolidated financial statements.

Material Contractual Obligations, Commitments, and Contingent Liabilities

We have entered into contractual obligations in the normal course of business that involve elements of credit risk, interest rate risk and liquidity risk.

The following table summarizes our material contractual obligations as of December 31, 2023. Further discussion of each obligation or commitment is included in the referenced note to the consolidated financial statements.

Deposits:

Securities sold under agreements to repurchase 11 24,693 24,693 — — —

Short-term debt:

Long-term debt:

We are party to various derivative contracts as a means to manage the balance sheet and our related exposure to changes in interest rates, to manage our residential real estate loan origination and sale activity, and to provide derivative contracts to our clients. Since the derivative liabilities recorded on the balance sheet change frequently and do not represent the amounts that may ultimately be paid under these contracts, these liabilities are not included in the table of contractual obligations presented above. Further discussion of derivative instruments is included in Note 8 - Derivative Financial Instruments to the consolidated financial statements.

In the normal course of business, various legal actions and proceedings are pending against us and our affiliates which are incidental to the business in which they are engaged. Further discussion of contingent liabilities is included in Note 24 - Commitments and Contingencies to the consolidated financial statements.

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 customers. These financial instruments include commitments to extend credit, commercial letters of credit and standby letters of credit. Those instruments involve, to varying degrees, elements of credit and interest rate risk in excess of the amount recognized in the consolidated statements of financial condition. The contractual or notional amounts of those instruments reflect the extent of involvement we have in particular classes of financial instruments. Further discussion of contingent liabilities is included in Note 24 - Commitments and Contingencies to the consolidated financial statements.

82

Table of Contents

Item 7A. Quantitative and Qualitative Disclosures About Market Risk

Market risk is the risk of reduced earnings and/or declines in the net market value of the balance sheet due to changes in market rates. Our primary market risk is interest rate risk which impacts our net interest income, fee income related to interest sensitive activities such as mortgage origination and servicing income and loan and deposit demand.

We are subject to interest rate risk due to:

•the maturity or repricing of assets and liabilities at different times or for different amounts;

•differences in short-term and long-term market interest rate changes; and

•the remaining maturity of various assets or liabilities may shorten or lengthen as interest rates change.

Our Asset Liability Committee, or ALCO, which is composed of our executive officers and certain other members of management, monitors interest rate risk on an ongoing basis in accordance with policies approved by our board of directors. The ALCO reviews interest rate positions and considers the impact projected interest rate scenarios have on earnings, liquidity, business strategies and other factors. However, management has the latitude to change interest rate positions within certain limits if, in management’s judgment, the change will enhance profitability or minimize risk.

To assess and manage interest rate risk, sensitivity analysis is used to determine the impact on earnings and the net market value of the balance sheet across various interest rate scenarios, balance sheet trends, and strategies.

Management uses a simulation model to analyze the sensitivity of net interest income to changes in interest rates across various interest rate scenarios, which seeks to demonstrate the level of interest rate risk inherent in the existing balance sheet. The analysis holds the current balance sheet values constant and does not take into account management intervention.

Additionally our simulation model incorporates various key assumptions, which we believe are reasonable, but may have an impact on the results such as: (1) we assume certain correlation rates, often referred to as “deposit beta,” for interest-bearing deposits, wherein the rates paid to customers change relative to changes in benchmark interest rates, (2) cash flows and maturities of interest sensitive assets and liabilities, (3) re-pricing characteristics for market rate sensitive instruments, (4) prepayment rates and product mix of assets and liabilities, and (5) simulations do not contemplate any actions management may undertake in response to changes in interest rates. Because of limitations in any approach used to measure interest rate risk, simulation results are not intended to forecast actual results driven by the effect of a change in market rates but to better plan and execute appropriate asset-liability management strategies and manage our interest rate risk.

The primary impact of inflation on operations is reflected in increasing operating costs and non-interest expense. Our interest-bearing assets and liabilities are monetary in nature and changes in interest rates will impact our performance on net interest margin more than changes in the general rate of inflation.

The effect on net interest income over a 12-month time horizon due to hypothetical changes in market interest rates is presented in the table below. In this interest rate shock simulation, as of the periods presented, interest rates have been adjusted by instantaneous parallel changes rather than in a ramp simulation, which applies interest rate changes over time. All rates, short-term and long-term, are changed by the same amount (e.g., plus or minus 100 basis points) resulting in the shape of the yield curve remaining unchanged.

Base — % — % — % — %

83

Table of Contents

Item 8. Financial Statements

Index to Consolidated Financial Statements

Page

Report of Independent Registered Public Accounting Firm (PCAOB ID: 173) 85

Consolidated Balance Sheets 86

Consolidated Statements of Income and Comprehensive Income 87

Consolidated Statements of Stockholders' Equity 88

Consolidated Statements of Cash Flows 89

Notes to Consolidated Financial Statements 91

Note 2 - Merger with Pioneer Bancshares, Inc. 103

Note 3 - Securities 105

Note 5 - Mortgage Servicing Rights 117

Note 6 - Premises and Equipment 118

Note 7 - Core Deposits and Other Intangible Assets 118

Note 8 - Derivative Financial Instruments 119

Note 9 - Prepaid Expenses and Other Assets 121

Note 11 - Securities Sold Under Agreements to Repurchase 123

Note 13 - Accrued Expenses and Other Liabilities 125

Note 14 - Earnings Per Share 126

Note 15 - Accumulated Other Comprehensive Income 126

Note 16 - Stockholders' Equity 127

Note 17 - Income Taxes 130

Note 18 - Other Noninterest Expenses 132

Note 19 - Regulatory Capital Matters 132

Note 20 - Transactions with Related Parties 134

Note 21 - Fair Value Measurements 134

Note 22 - Parent Company Only Condensed Financial Information 138

Note 23 - Segment Information 140

Note 24 - Commitments and Contingencies 144

Note 26 - Revenue from Contracts with Customers 147

Note 27 - Subsequent Events 148

84

Table of Contents

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

Stockholders and the Board of Directors of FirstSun Capital Bancorp and Subsidiaries

Denver, Colorado

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of FirstSun Capital Bancorp and Subsidiaries (the "Company") as of December 31, 2023 and 2022, the related consolidated statements of income and comprehensive income, stockholders’ equity, and cash flows for each of the three years in the period ended December 31, 2023, and the related notes (collectively referred to as 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, 2023 and 2022, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2023, in conformity with accounting principles generally accepted in the United States of America.

Explanatory Paragraph - Change in Accounting Principle

As discussed in Note 1 to the financial statements, the Company has changed its method of accounting for credit losses effective January 1, 2023 due to the adoption of ASU 2016-13 Financial Instruments – Credit Losses (ASC Topic 326). The Company adopted the new credit loss standard using the modified retrospective method such that prior period amounts are not adjusted and continue to be reported in accordance with previously applicable generally accepted accounting principles.

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 Public Company Accounting Oversight Board (United States) ("PCAOB") and are required to be independent with respect to the Company in accordance with the 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.

/s/ Crowe LLP

Crowe LLP

We have served as the Company's auditor since 2014.

Dallas, Texas

March 7, 2024

85

Table of Contents

FIRSTSUN CAPITAL BANCORP

and Subsidiaries

Consolidated Balance Sheets

As of December 31,

(In thousands, except par and share amounts) 2023 2022

Assets

Mortgage servicing rights, at fair value 76,701 74,097

Other real estate owned and foreclosed assets, net 4,100 6,358

Core deposits and other intangible assets, net 10,984 15,806

Liabilities and Stockholders’ Equity

Liabilities:

Deposits:

Securities sold under agreements to repurchase 24,693 36,721

Convertible notes payable, net — 5,355

Commitments and contingencies (Note 24)

Stockholders’ equity:

Accumulated other comprehensive loss, net (43,007) (43,983)

The accompanying notes are an integral part of these consolidated financial statements.

86

Table of Contents

FIRSTSUN CAPITAL BANCORP

and Subsidiaries

Consolidated Statements of Income and Comprehensive Income

For the years ended December 31,

Interest income:

Interest and fee income on loans:

Interest and dividend income on securities:

Interest expense:

Interest expense on securities sold under agreements to repurchase 225 119 59

Noninterest income:

Noninterest expense:

Other comprehensive income, net of tax:

Gain (loss) on securities available-for-sale 758 (47,821) (7,455)

Gain on fair value hedges of securities available-for-sale 218 2,174 —

Other comprehensive income (loss), net of tax 976 (45,647) (7,455)

Earnings per share:

The accompanying notes are an integral part of these consolidated financial statements.

87

Table of Contents

FIRSTSUN CAPITAL BANCORP

and Subsidiaries

Consolidated Statements of Stockholders’ Equity

For the years ended December 31,

Issuance of common stock on restricted stock grants 24,629 — 812 — — — 812

Share-based compensation, net of forfeitures — — 1,730 — — — 1,730

Other comprehensive income — — — — — (7,455) (7,455)

Issuance of common stock on restricted stock grants 11,344 — 270 — — — 270

Share-based compensation, net of forfeitures — — 1,178 — — — 1,178

Other comprehensive loss — — — — — (45,647) (45,647)

Cumulative effect of accounting change — — — — (3,808) — (3,808)

Issuance of common stock on restricted stock grants 15,007 — 371 — — — 371

Share-based compensation, net of forfeitures — — 1,756 — — — 1,756

Other comprehensive income — — — — — 976 976

The accompanying notes are an integral part of these consolidated financial statements.

88

Table of Contents

FIRSTSUN CAPITAL BANCORP

and Subsidiaries

Consolidated Statements of Cash Flows

For the year ended December 31,

Cash flows from operating activities:

Adjustments to reconcile income to net cash provided by operating activities:

Depreciation and amortization on premises and equipment 7,420 7,953 7,181

Accretion of net discount on acquired loans (3,204) (1,308) (1,142)

Net change in deferred loan origination fees and costs (1,178) 1,182 617

Amortization of core deposits and other intangible assets 4,822 4,215 1,417

Amortization of premium on acquired deposits (966) (1,052) (45)

Accretion of discount on subordinated debt 286 254 256

Amortization of issuance costs on subordinated debt 147 145 93

Accretion of discount on convertible notes payable 101 1,131 746

Accretion of discount on Federal Home Loan Bank advances — 76 —

Impairment of premises and equipment — 720 —

Impairment of other real estate owned and foreclosed assets 286 94 217

Federal Home Loan Bank stock dividends (1,560) (712) (407)

Net loss on sales of loans held-for-investment — — 701

Net loss on disposal of premises and equipment 120 86 76

Changes in operating assets and liabilities:

Lease right-of-use assets (660) 3,282 —

The accompanying notes are an integral part of these consolidated financial statements.

89

Table of Contents

FIRSTSUN CAPITAL BANCORP

and Subsidiaries

Consolidated Statements of Cash Flows (continued)

For the years ended December 31,

Cash flows from investing activities:

Purchases of held-to-maturity securities — (335) —

Proceeds from maturities of held-to-maturity securities 2,007 3,626 13,835

Proceeds from the sale of premises and equipment — 2 5

Purchases of restricted equity securities (51,076) (39,785) (57)

Proceeds from the sale or redemption of other investments 668 745 519

Cash flows from financing activities:

Proceeds from subordinated debt, net — 24,466 —

Proceeds from issuance of common stock, net of issuance costs (167) (579) (456)

Repayments of convertible notes payable (5,456) (15,217) —

Supplemental disclosures of cash flow information:

Non-cash investing and financing activities:

Assets acquired from merger with Pioneer Bancshares, Inc. $ — $ 1,085,506 $ —

The accompanying notes are an integral part of these consolidated financial statements.

90

Table of Contents

FIRSTSUN CAPITAL BANCORP and Subsidiaries

Notes to Consolidated Financial Statements

($ in thousands, except share and per share amounts)

NOTE 1 - Basis of Presentation, Description of Business and Summary of Significant Accounting Policies

a.Principles of Consolidation - The consolidated financial statements include the accounts of FirstSun Capital Bancorp (“FirstSun” or “Parent Company”) and its wholly-owned subsidiaries, Sunflower Bank, N.A. (the “Bank”), Logia Portfolio Management, LLC, and FEIF Capital Partners, LLC, and have been prepared using U.S. generally accepted accounting principles (“U.S. GAAP”) and prevailing practices in the banking industry.All significant intercompany balances and transactions have been eliminated. These entities are collectively referred to as “our”, “us”, “we”, or “the Company”.

b.Nature of Operations - The Bank’s headquarters were relocated to Dallas, Texas from Denver, Colorado in 2023. The Bank primarily operates throughout Texas, Kansas, Colorado, New Mexico and Arizona providing a full range of commercial and consumer banking and financial services to small and medium-sized companies. Its primary deposit products are checking, savings and term certificate accounts. Its primary wealth management and trust products are personal trust and agency accounts, employee benefit and retirement related trust and agency accounts, investment management and advisory agency accounts, and foundation and endowment trust and agency accounts. Its primary lending products are residential mortgage, commercial and consumer loans. Substantially all loans are secured by specific items of collateral, including business assets, consumer assets, and commercial and residential real estate. Commercial and industrial loans are generally expected to be repaid from the borrower’s cash flow from operations.

c.Business Combinations - On April 1, 2022, FirstSun completed its merger with Pioneer Bancshares, Inc. (“Pioneer”). Pursuant to the terms of the merger agreement, at the Effective Time, each Pioneer shareholder had the right to receive 1.0443 shares of FirstSun common stock, for each share of Pioneer common stock owned by the shareholder, with cash paid in lieu of fractional shares. Each outstanding share of FirstSun common stock remained outstanding and was unaffected by the merger. Further information is presented in Note 2 - Merger with Pioneer Bancshares, Inc. On January 16, 2024, we announced a proposed merger with HomeStreet, Inc. For additional information regarding our proposed merger with HomeStreet, Inc. see Note 27 - Subsequent Events.

d.Subsequent Events - We evaluate events occurring subsequent to the balance sheet date to determine whether the events required recognition or disclosure in the financial statements. If conditions of a subsequent event existed as of the balance sheet date, depending on materiality, the effects may be required to be recognized and disclosed in the financial statements. If conditions of a subsequent event arose after the balance sheet date, the effects are not required to be recognized in the financial statements, but depending on materiality, may need to be disclosed in the financial statements.

e.Use of Estimates - The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions based on available information. These estimates and assumptions affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

These estimates are based on historical experience and on various assumptions about the future that are believed to be reasonable based on all available information. Our reported financial position or results of operations may be materially different under changed conditions or when using different estimates and assumptions, particularly with respect to critical accounting policies. In the event that estimates or assumptions prove to differ from actual results, adjustments are made in subsequent periods to reflect more current information.

91

Table of Contents

f.Concentration of Credit Risk - We have a significant concentration in residential real estate and commercial and industrial loans within Texas, Kansas, Colorado, New Mexico and Arizona. When necessary, we perform credit evaluations on our customers' financial condition and often request additional guarantees and forms of collateral from our customers. These financial evaluations require significant judgment and are based on a variety of factors including, but not limited to, current economic trends, historical payment patterns, cash flow needs and deposit balances (particularly in light of recent developments in the banking industry) and bad debt write-off experience. Declines in the local or statewide economies could have an adverse impact on our borrowers’ financial condition. Specifically, inflation and higher interest rates, along with monetary events, can cause some of our business customers who have greater operating cash needs to draw on their deposits with us to meet expenses. Adverse developments affecting real estate values in one or more of our markets could increase our credit risk associated with our loan portfolio. Additionally, if loans are not repaid according to their terms, the collateral securing the loans, in those cases where real estate serves as the primary collateral, may not have value equal to the amounts owed under the loan. We did not exceed regulatory concentration monitoring levels as of December 31, 2023 or 2022.

g.Reclassifications - Some items in the prior year financial statements were reclassified to conform to the current presentation. Reclassifications had no effect on prior years net income or stockholders’ equity.

h.Adoption of New Accounting Standards and Change in Accounting Principle - As an “emerging growth company” under Section 107 of the JOBS Act, we can take advantage of the extended transition period provided in Section 7(a)(2)(B) of the Securities Act for complying with new or revised accounting standards. Therefore, we can delay the adoption of certain accounting standards until those standards would otherwise apply to non-public business entities. We intend to take advantage of the benefits of this extended transition period for an “emerging growth company” for as long as it is available to us. For standards that we have delayed adoption, we may lack comparability to other companies who have adopted such standards.

In June of 2016, the FASB issued ASU 2016-13, Financial Instruments-Credit Losses: Measurement of Credit Losses on Financial Instruments, which significantly changes the way that entities are required to measure credit losses. The new standard requires that the estimated credit loss be based upon an “expected credit loss” approach rather than the “incurred loss” approach previously required. The new approach requires entities to measure all expected credit losses for financial assets over their expected lives based on historical experience, current conditions, and reasonable and supportable forecasts of collectability. The expected credit loss model requires earlier recognition of credit losses than the incurred loss approach. We expect ongoing changes in the allowance for credit losses will be driven primarily by the growth of our loan portfolio, credit quality, and the economic environment and related projections at that time. In addition, the ASU developed a new accounting treatment for purchased financial assets with credit deterioration.

The ASU also modifies the other-than-temporary impairment model for available-for-sale debt securities and held-to-maturity debt securities by requiring companies to record an allowance for credit impairment rather than write-downs of such assets.

Management has reviewed this update and other ASUs that were subsequently issued to further clarify the implementation guidance outlined in ASU 2016-13. We adopted the amendments of these ASUs as of January 1, 2023.

Upon adoption, we recorded an increase to the allowance for credit losses on loans held-for-investment of $5.3 million, a reduction in the allowance for credit losses on unfunded commitments of $0.2 million, an increase to deferred tax assets of $1.2 million, and a corresponding one-time cumulative reduction to retained earnings, net of tax, of $3.8 million in the consolidated balance sheet as of January 1, 2023.

The adoption of this ASU, as it relates to available-for-sale debt securities and held-to-maturity debt securities, did not have a material impact on the consolidated financial statements as of January 1, 2023.

In March of 2022, the FASB issued ASU 2022-02, Financial Instruments - Credit Losses: Troubled Debt Restructurings and Vintage Disclosures, which eliminates the accounting for troubled debt restructurings by creditors while enhancing the disclosure requirements for certain loan refinancings and restructurings by creditors when a borrower is experiencing financial difficulty. The amendment also requires disclosure of gross charge-offs by year of origination for finance receivables. We adopted the amendments in this ASU as of January 1, 2023 prospectively.

92

Table of Contents

As a result of the adoption of ASU 2016-13 and ASU 2022-02, several of our significant accounting policies have changed as of January 1, 2023 to reflect the requirements of the new standard.

i.Fair Value Measurement - Fair value is determined in accordance with Accounting Standards Codification (ASC) Topic 820, Fair Value Measurement. ASC Topic 820 establishes a fair value hierarchy which requires the use of observable inputs and minimizes the use of unobservable inputs when measuring fair value. 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. ASC Topic 820 describes three levels of inputs that may be used to measure fair value:

Level 1: Unadjusted quoted prices in active markets for identical assets or liabilities that the reporting entity has the ability to access at the measurement date.

Level 2: Inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. These might include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability (such as interest rates, volatilities, prepayment speeds, credit risks, etc.) or inputs that are derived principally from or corroborated by market data by correlation or other means.

Level 3: Unobservable inputs for determining the fair values of assets or liabilities that reflect an entity’s own beliefs about the assumptions that market participants would use in pricing the assets or liabilities.

j.Cash and Cash Equivalents - Cash and cash equivalents include cash, cash items in process of collection, deposits with other financial institutions and federal funds sold. For purposes of the consolidated statements of cash flows, we consider all federal funds sold and interest-bearing deposits at other financial institutions to be cash and cash equivalents, all with original maturities of less than 90 days. Cash held at depository institutions at times may be in excess of the Federal Deposit Insurance Corporation (FDIC) insurance limit. Cash deposits are with financial institutions that we believe to be reputable and we do not anticipate realizing any losses from these cash deposits. As of December 31, 2023 and 2022, we have complied with all regulatory cash reserve and clearing requirements.Cash and cash equivalents were as follows as of December 31,:

Cash on hand and noninterest-bearing accounts 29,464 86,377

k.Securities - The Bank classifies debt securities as either available-for-sale or held-to-maturity. Held-to-maturity securities are those which the Bank has the positive intent and ability to hold to maturity. All other debt securities are classified as available-for-sale.

Held-to-maturity securities are recorded at amortized cost. Available-for-sale securities are recorded at fair value. Unrealized holding gains and losses on available-for-sale securities are excluded from earnings and are reported as a separate component of stockholders’ equity (accumulated other comprehensive income/loss) until realized. Realized gains and losses on securities classified as available-for-sale are included in earnings and recorded on trade date. The specific identification method is used to determine the cost of the securities sold.

Purchased premiums and discounts on debt securities are amortized or accreted into interest income using the yield-to-maturity method based upon the remaining contractual maturity of the asset, adjusted for any expected prepayments or call features for securities purchased at a premium.

For available-for-sale debt securities in an unrealized loss position, management 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

93

Table of Contents

written down to fair value. Any previously recognized allowance for credit losses (“ACL”) should be written off and the write-down in excess of such ACL would be recorded through a charge to the provision for credit losses. For available-for-sale debt securities that do not meet the aforementioned criteria, management evaluates whether the decline in fair value has resulted from credit losses or other factors. In making this assessment, management considers the cash position of the issuer and its cash and capital generation capacity, which could increase or diminish the issuer’s ability to repay its bond obligations, the extent to which the fair value is less than the amortized cost basis, any adverse change to the credit conditions and liquidity of the issuer, taking into consideration the latest information about the financial condition of the issuer, credit ratings, the failure of the issuer to make scheduled principal or interest payments, recent legislation and government actions affecting the issuer’s industry, and actions taken by the issuer to deal with the economic climate. Management also takes into consideration changes in the near-term prospects of the underlying collateral of a security, if any, such as changes in default rates, loss severity given default, and significant changes in prepayment assumptions and the level of cash flow generated from the underlying collateral, if any, supporting the principal and interest payments on the debt securities. If this assessment indicates that a credit loss exists, the present value of cash flows expected to be collected from the security is compared to the amortized cost basis of the security. If the present value of the cash flows expected to be collected is less than the amortized cost basis, a credit loss exists and management records an ACL for the credit loss, limited to the amount by which the fair value is less than the amortized cost basis. Management recognizes in accumulated other comprehensive income/loss (“AOCI”) any impairment that has not been recorded through an ACL, net of tax. Non-credit-related impairments result from other factors, including changes in interest rates.

Management records changes in the ACL as a provision for (or reversal of) credit loss expense. Losses are charged against the allowance when management believes the uncollectibility of an available-for-sale debt security is confirmed or when either of the criteria regarding intent or requirement to sell is met. Management has elected not to measure an ACL on accrued interest related to available-for-sale debt securities, as uncollectible accrued interest receivables are written off on a timely manner.

The ACL on held-to-maturity debt securities is based on an expected loss methodology referred to as current expected credit loss (“CECL”) methodology by major security type. Any expected credit loss is provided through the ACL on held-to-maturity debt securities and is deducted from the amortized cost basis of the security so the statement of financial condition reflects the net amount management expects to collect. For the ACL of held-to-maturity securities, management considers historical credit loss information that is adjusted for current conditions and reasonable and supportable forecasts.

Management has elected not to measure an ACL on accrued interest related to held-to-maturity debt securities, as uncollectible accrued interest receivables are written off on a timely manner.

Equity securities are carried at fair value, with changes in fair values reported in net income. Equity securities without readily determinable fair values are carried at cost, minus impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for the identical or a similar investment. Equity securities are included as a component of “prepaid expenses and other assets” in our consolidated balance sheets.

l.Loans Held-for-sale - Mortgage loans originated and intended for sale in the secondary market are classified as loans held-for-sale and recorded at fair value. Most of these loans are sold with servicing rights retained. The changes in fair value of loans held-for-sale are measured and recorded in income from mortgage banking services. Loan origination fees are recorded in the period of origination.

m.Loans Receivable - Loans that management has the intent and ability to hold for the foreseeable future or until maturity or payoff, are reported at the principal balance outstanding, net of purchase premiums and discounts, deferred loan fees and costs, and an allowance for credit losses.

Interest on loans receivable is accrued and credited to income based upon the principal amount outstanding using primarily a simple interest calculation. Loan origination fees and related direct loan origination costs for a given loan are offset and only the net amount is deferred and amortized and recognized in interest income over the life of the loan using the interest method without anticipating prepayments. The accrual of interest income on loans is discontinued when, in management’s judgment, the interest is uncollectible in the normal course of business, and a loan is moved to nonaccrual status in accordance with the Bank’s policy, typically after 90 or 120 days of non-payment, as follows: interest income on consumer, commercial real estate and commercial and industrial loans is typically discontinued at the time the loan is 90 days delinquent unless the loan is well-secured and in the process

94

Table of Contents

of collection; interest income on residential real estate loans is typically discontinued at the time the loan is 120 days delinquent unless the loan is well-secured and in the process of collection. Consumer and credit card loans are typically charged off no later than 120 days past due. 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 in full is considered doubtful. Nonaccrual loans and loans past due 90 days still on accrual include both smaller homogenous loans that are collectively evaluated for impairment and individually classified impaired loans.

When discontinued, all unpaid interest is reversed. Interest is included in income after the date the loan is placed on nonaccrual status only after all principal has been paid or when the loan is returned to accrual status. The loan is returned to accrual status only when the borrower has brought all past-due principal and interest payments current and, in the opinion of management, has demonstrated the ability to make future payments of principal and interest as scheduled.

Acquired Loans – Loans acquired through a purchase or a business combination are recorded at their fair value as of the acquisition date. Management performs an assessment of acquired loans to first determine if such loans have experienced a more than insignificant deterioration in credit quality since their origination and thus should be classified and accounted for as purchased credit deteriorated (“PCD”) loans. For loans that have not experienced a more than insignificant deterioration in credit quality since origination, referred to as non-PCD loans, management records such loans at fair value, with any resulting discount or premium accreted or amortized into interest income over the remaining life of the loan using the interest method. Additionally, upon the purchase or acquisition of non-PCD loans, management measures and records an ACL based on the Bank’s methodology for determining the ACL. The ACL for non-PCD loans is recorded through a charge to the provision for credit losses in the period in which the loans are purchased or acquired.

Acquired loans that are classified as PCD are recognized at fair value, which includes any premiums or discounts resulting from the difference between the initial amortized cost basis and the par value. Premiums and non-credit loss related discounts are amortized or accreted into interest income over the remaining life of the loan using the interest method. Unlike non-PCD loans, the initial ACL for PCD loans is established through an adjustment to the acquired loan balance and not through a charge to the provision for credit losses in the period in which the loans are acquired. At acquisition, the ACL for PCD loans, which represents the fair value credit discount, is determined using a discounted cash flow method that considers the probability of default and loss-given default used in the Bank’s ACL methodology. Characteristics of PCD loans include the following: delinquency, payment history since origination, credit scores migration and/or other factors the Bank may become aware of through its initial analysis of acquired loans that may indicate there has been a more than insignificant deterioration in credit quality since a loan’s origination.

Subsequent to acquisition, the ACL for both non-PCD and PCD loans is determined pursuant to the Bank ACL methodology in the same manner as all other loans.

n.Allowance for Credit Losses - The ACL for loans held for investment is a valuation account that is deducted from the loans’ amortized cost basis to present the net amount expected to be collected on loans. Loans are charged-off against the allowance when management confirms the loan balance is uncollectible.

Management estimates the allowance using relevant available information, from internal and external sources, relating to past events, current conditions, and reasonable and supportable forecasts. Internal and industry historical credit loss experience is a significant input for the estimation of expected credit losses. Additionally, management’s assessment involves evaluating key factors, which include credit and macroeconomic indicators, such as changes in economic growth levels, unemployment rates, property values, and other relevant factors, to account for current and forecasted market conditions that are likely to cause estimated credit losses over the life of the loans to differ from historical credit losses. Expected credit losses are generally estimated over the contractual term of the loans, adjusted by prepayments when appropriate.

Management estimates the ACL primarily based on a probability of default (“PD”), loss-given default (“LGD”), and exposure at default (“EAD”) modeled approach, or individually for collateral dependent loans. Management evaluates the need for changes to the ACL by portfolio segments and classes of loans within certain of those portfolio segments. Factors such as the credit risk inherent in a portfolio and how management monitors the related quality, as well as the estimation approach to estimate credit losses, are considered in the determination of such portfolio segments and classes. The Bank believes it has a diversified portfolio across a variety of industries,

95

Table of Contents

and the portfolio is generally centered in the states in which the Bank has offices. Management has identified the following portfolio segments:

Commercial and industrial loans include commercial and industrial loans to commercial customers for use in normal business operations to finance working capital needs, equipment and inventory purchases, and other expansion projects. These loans are made primarily in the Bank’s market areas, are underwritten on the basis of the borrower’s ability to service the debt from revenue, and extended under the Bank’s normal credit standards, controls, and monitoring systems. Collateral is often represented by liens on accounts receivable, inventory, equipment, and other forms of general non-real estate business assets. The Bank often obtains some form of credit enhancement through a personal guaranty of the borrower, principals and/or others. The global cash flow capability of commercial and industrial loan customers is generally evaluated both at underwriting and during the life of the loan. Commercial and industrial loans may involve increased risk due to the expectation that repayments for such loans generally come from the operation of the business activity and those operations may be unsuccessful. A disruption in the operating cash flows from a business, sometimes influenced by events not under the control of the borrower such as changing business environment, changes in regulations and political climate, rising interest rates, unexpected natural events, or competition could also impact the borrower’s capacity to repay the loan. Assets collateralizing commercial and industrial loans may also decline in value more quickly than anticipated. Commercial and industrial loans require increased underwriting and monitoring to offset these risks, for which the Bank’s systems have been designed to provide.

Commercial real estate loans include owner occupied and non-owner occupied commercial real estate mortgage loans to operating commercial and agricultural businesses, and include both loans for long-term financing of land and buildings and loans made for the initial development or construction of a commercial real estate project.

Residential real estate loans represent loans to consumers collateralized by a mortgage on a residence and include purchase money, refinancing, secondary mortgages, and home equity loans and lines of credit.

Public finance loans include loans to our charter school and municipal based customers.

Consumer loans include direct consumer installment loans, credit card accounts, overdrafts and other revolving loans.

Other loans consist of loans to nondepository financial institutions, lease financing receivables and loans for agricultural production.

The ACL is measured using a PD/LGD with EAD model that is calculated based on the product of a cumulative PD and LGD. PD and LGD estimates are assigned based upon the periodic completion of credit risk scorecards. Remaining EAD is derived based on inherent loan characteristics and like-kind loan prepayment trends. Under this approach, management calculates losses for each loan for all future periods using the PD and LGD rates derived from the term structure curves applied to the estimated remaining balance of the loans.

For the ACL determination of all portfolios, the expectations for relevant macroeconomic variables consider an initial reasonable and supportable period of four years and a reversion period of one year, utilizing a straight-line approach and reverting back to the historical loss rates.

Management periodically considers the need to make qualitative adjustments to the ACL. Qualitative adjustments may be related to and include, but not be limited to factors such as the following: (i) management’s assessment of economic forecasts used in the model and how those forecasts align with management’s overall evaluation of current and expected economic conditions; (ii) organization specific risks such as credit concentrations, collateral specific risks, nature and size of the portfolio and external factors that may ultimately impact credit quality, and (iii) other limitations associated with factors such as changes in underwriting and loan resolution strategies, among others.

Loans that do not share similar risk characteristics with the collectively evaluated pools are evaluated on an individual basis and are excluded from the collectively evaluated pools. Such loans are evaluated for credit losses based on either discounted cash flows or the fair value of collateral. When management determines that foreclosure is probable, expected credit losses are based on the fair value of the collateral, less selling costs. For loans for which foreclosure is not probable, but for which repayment is expected to be provided substantially

96

Table of Contents

through the operation or sale of the collateral, management has elected the practical expedient under ASC 326 to estimate expected credit losses based on the fair value of the collateral, with selling costs considered in the event sale of the collateral is expected.

Management has elected not to measure an ACL on accrued interest related to held for investment loans, as uncollectible accrued interest receivables are written off in a timely manner.

Loan credit quality and the adequacy of the allowance are also subject to periodic examination by regulatory agencies. Such agencies may require adjustments to the allowance based upon their judgements about information available at the time of their examination.

Management estimates expected credit losses over the contractual period in which the Bank is exposed to credit risk via a contractual obligation to extend credit unless the obligation is unconditionally cancellable by the Bank. The ACL on off-balance sheet credit exposures is adjusted as a provision for credit loss expense. The estimate includes the consideration of the likelihood that funding will occur and an estimate of expected credit losses on commitments expected to be funded over its estimated life.

o.Mortgage Servicing Rights (MSRs) - MSRs arise from contractual agreements between us and investors in mortgage loans. Pursuant to ASC Topic 860-50, Servicing Assets and Liabilities, we record MSR assets when we sell loans on a servicing-retained basis, at the time of a securitization that qualifies and meets requirements for sale accounting or through the acquisition or assumption of the right to service a financial asset. Under these contracts, we perform loan servicing functions in exchange for fees and other remuneration.

Our MSRs are initially recorded and subsequently measured at fair value. The fair value of the MSRs is based upon the present value of the expected future net cash flows related to servicing these loans. We receive a base servicing fee, generally ranging from 0.25% to 0.50% annually on the remaining outstanding principal balances of the loans. The servicing fees are collected from investors. We determine the fair value of the MSRs by the use of a discounted cash flow model that incorporates prepayment speeds, delinquencies, discount rate, ancillary revenues and other assumptions (including costs to service) that management believes are consistent with the assumptions other market participants use in valuing MSRs. The nature of the loans underlying the MSRs affects the assumptions used in the cash flow models. We obtain third-party valuations quarterly to assess the reasonableness of the fair value calculated by the cash flow model. Changes in the fair value of MSRs are charged or credited to income from mortgage banking services, net.

As a part of our mortgage servicing responsibilities, we advance funds when the borrower fails to meet contractual payments (e.g. principal, interest, property taxes, and insurance). We also advance funds to maintain, report, and market foreclosed real estate properties on behalf of investors. These advances are collectively known as servicer related advances. Such advances are recovered from borrowers for reinstated and performing loans and from investors for foreclosed loans. We record an ACL on outstanding servicer advances when we determine that based on all available information, that a credit loss is expected, and that all contractual amounts due will not be recovered. There was no ACL on outstanding servicer advances as of December 31, 2023 and 2022, respectively.

p.Premises and Equipment - Land is carried at cost. Premises and equipment are stated at cost less accumulated depreciation and amortization. Depreciation and amortization is computed on the straight-line or declining balance method depending upon the type of asset with useful lives ranging from one to 39 years. Depreciation and amortization expense has been included in occupancy and equipment expense in the accompanying consolidated statements of income and comprehensive income.

Maintenance and repair costs are charged to expense as incurred. Major betterments are considered individually and are capitalized or expensed depending on facts and circumstances.

q.Other Real Estate Owned and Foreclosed Assets - Assets acquired through, or in lieu of, foreclosure or repossession or otherwise are being held for disposal or to be sold are adjusted upon transfer to fair value less estimated costs to sell, establishing a new cost basis. Physical possession of residential real estate property collateralizing a consumer mortgage loan occurs when legal title is obtained upon completion of foreclosure or when the borrower conveys all interest in the property to satisfy the loan through completion of a deed in lieu of foreclosure or through a similar legal agreement. Subsequent to foreclosure/repossession, management periodically performs valuations, and an allowance for losses is established by a charge against earnings if the carrying value of a property exceeds the fair value less estimated costs to sell. Revenue and expenses from

97

Table of Contents

operation and changes in the valuation allowance are included in other noninterest expense on the consolidated statements of income and comprehensive income.

r.Bank-owned Life Insurance (BOLI) - We have purchased life insurance policies on certain key current and former executives as a method to offset the cost of employee benefit plans. We record BOLI at the estimated contractual amount that would be realized if the life insurance policy is surrendered prior to maturity or death of the insured, which is the cash surrender value adjusted for other charges and amounts due that are probable at settlement. Changes in the net cash surrender value of the policies, as well as insurance proceeds received, are recorded in noninterest income and are not subject to income taxes.

s.Restricted Equity Securities - Restricted equity securities consist of capital stock of the Federal Home Loan Bank of Topeka (FHLB) and the Federal Reserve Bank of Kansas City (FRB). Such stock is not readily marketable, and accordingly, is carried at cost. Members of the FHLB are required to own a certain amount of stock based on the level of borrowings and other factors. As a national banking association, the Bank is required to own stock of its regional FRB. FRB and FHLB stock are periodically evaluated for impairment based on ultimate recovery of par value. Both cash and stock dividends are reported as income.

Restricted equity securities consisted of the following:

Total restricted equity securities $ 38,072 $ 50,215

As a result of the relocation of our Bank headquarters to Dallas, Texas in 2023, we will be required to liquidate our capital stock in the FHLB of Topeka and the FRB of Kansas City and acquire capital stock in the FHLB of Dallas and the FRB of Dallas. We expect to complete this activity in early 2024 with no gain or loss on the liquidation of the capital stock.

t.Goodwill - The excess purchase price of acquired businesses over the fair value of identifiable assets acquired and liabilities assumed is recognized as goodwill. Goodwill is evaluated for impairment on an annual basis, or more frequently if events and circumstances exist that indicate that a goodwill impairment test should be performed. Our evaluation may consist of performing a qualitative assessment of impairment to determine whether any further quantitative testing for impairment is necessary. Factors considered in the qualitative assessment include general economic conditions, conditions of the industry and markets in which we operate, regulatory developments, cost factors, and our overall financial performance. We performed our most recent annual goodwill impairment test as of December 31, 2023 and concluded that no impairment existed. No impairment losses have been recognized during the years ended December 31, 2023, 2022 and 2021.

u.Core Deposits and Other Intangible Assets - Core deposits related to the depositor relationship of customers acquired from our business combinations are recognized in the value of core deposits. Our core deposits were valued based on the expected future benefit or earnings capacity attributable to the acquired deposits. These assets have been assigned 10 year lives from the date of acquisition. Other intangible assets include the trade names of First National 1870 and Guardian Mortgage. These trade names provide a source of market recognition to attract potential clients/relationships and retain existing customers. Management has indicated that portions of the business will utilize these trade names into perpetuity; therefore, these trade names have been classified as indefinite-lived assets. Further, we have acquired certain customer relationships relating to wealth management. These customer relationships have been assigned amortization periods of 10 to 16 years. We had a non-competition agreement for a former employee. This agreement was fully amortized in 2023.

v.Impairment of Long-lived Assets - Long-lived assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. When events or changes in circumstances indicate an asset may not be recoverable, we estimate the future cash flows expected to result from the use of the asset. If impairment is indicated, an adjustment is made to reduce the carrying amount based on the difference between the future cash flows expected and the carrying amount of the asset. During the years ended December 31, 2023 and 2021, we recorded no impairment of long-lived assets,respectively. During the year ended December 31, 2022, we recorded impairment of $720 of long-lived assets.

98

Table of Contents

w.Transfers of Financial Assets - Transfers of financial assets are accounted for as sales, when control over the assets has been relinquished. 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.

x.Loan Commitments and Related Financial Instruments - Financial instruments include off-balance sheet credit instruments, such as commitments to make loans, commercial letters of credit, and standby letters of credit, issued to meet customer financing needs. The face amount for these items represents the exposure to loss, before considering customer collateral or ability to repay. Such financial instruments are recorded when they are funded.

y.Derivative Instruments and Hedging Activities - Derivatives and Hedging (ASC Topic 815), provides the disclosure requirements for derivatives and hedging activities with the intent to provide users of financial statements with an enhanced understanding of: (a) how and why an entity uses derivative instruments, (b) how the entity accounts for derivative instruments and related hedged items, and (c) how derivative instruments and related hedged items affect an entity’s financial position, financial performance, and cash flows. Further, qualitative disclosures are required that explain our objectives and strategies for using derivatives, as well as quantitative disclosures about the fair value of and gains and losses on derivative instruments, and disclosures about credit-risk-related contingent features in derivative instruments.

As required by ASC Topic 815, we record all derivatives on the consolidated balance sheet at fair value. The accounting for changes in the fair value of derivatives depends on the intended use of the derivative, whether we have elected to designate a derivative in a hedging relationship and apply hedge accounting and whether the hedging relationship has satisfied the criteria necessary to apply hedge accounting. Derivatives designated and qualifying as a hedge of the exposure to changes in the fair value of an asset, liability, or firm commitment attributable to a particular risk, such as interest rate risk, are considered fair value hedges. Derivatives designated and qualifying as a hedge of the exposure to variability in expected future cash flows, or other types of forecasted transactions, are considered cash flow hedges. Derivatives may also be designated as hedges of the foreign currency exposure of a net investment in a foreign operation. Hedge accounting generally provides for the matching of the timing of gain or loss recognition on the hedging instrument with the recognition of the changes in the fair value of the hedged asset or liability that are attributable to the hedged risk in a fair value hedge or the earnings effect of the hedged forecasted transactions in a cash flow hedge. We may enter into derivative contracts that are intended to economically hedge certain of our risks, even though hedge accounting does not apply or we do not elect to apply hedge accounting. We do not have any cash flow or foreign currency hedges.

In accordance with the fair value measurement guidance in ASU Topic 2011-04, Fair Value Measurement (Topic 820), we made an accounting policy election to measure the credit risk of our derivative financial instruments that are subject to master netting agreements on a net basis by counterparty portfolio.

The FASB has issued standards associated with the cessation of LIBOR, including ASU 2022-06 that further defers the sunset date of ASU 2020-04 and ASU 2021-01 Reference Rate Reform (Topic 848) from December 31, 2022 to December 31, 2024, after which entities will no longer be permitted to apply the relief in Topic 848. We have elected to apply the contract modification guidance included within Topic 848. Since December 31, 2021, we have not issued debt indexed to USD-LIBOR and as of December 31, 2023, we have fully transitioned from the use of LIBOR on all contracts.

Risk Management Objective of Using Derivatives

Banking Activities -We are exposed to certain risks arising from both our business operations and economic conditions. We principally manage our exposures to a wide variety of business and operational risks through management of our core business activities. We manage economic risks, including interest rate, liquidity, and credit risk primarily by managing the amount, sources, and duration of our assets and liabilities and the use of derivative financial instruments. Specifically, we enter into derivative financial instruments to manage exposures that arise from business activities that result in the receipt or payment of future known and uncertain cash amounts, the value of which are determined by interest rates. Our derivative financial instruments are used to manage differences in the amount, timing, and duration of our known or expected cash receipts and our known or expected cash payments principally related to our loan portfolio. The initial and subsequent changes in value, as well as the offsetting gain or loss of banking derivative financial instruments that qualify as fair value hedges, and

99

Table of Contents

any fees income generated are recorded as a component of interest and fee income on loans in our consolidated statements of income and comprehensive income.

Mortgage Banking Activities - Our mortgage bankers enter into interest rate lock commitments (IRLC) with prospective borrowers. An IRLC represents an agreement to purchase loans from a third-party originator or an agreement to extend credit to a mortgage applicant, whereby the interest rate is set prior to funding. The loan commitment binds us (subject to the loan approval process) to fund the loan at the specified rate, regardless of whether interest rates have changed between the commitment date and the loan funding date. Outstanding interest rate lock commitments are subject to interest rate risk and related price risk during the period from the date of the commitment through the loan funding date or expiration date. The borrower is not obligated to obtain the loan; thus, we are subject to fallout risk related to IRLCs, which is realized if approved borrowers choose not to close on the loans within the terms of the IRLC. Our interest rate exposure on these derivative loan commitments is hedged with forward sales of mortgage-based securities as described below. Our IRLCs are carried at fair value in accordance with ASC Topic 815,and recorded at fair value in prepaid expenses and other assets on our consolidated balance sheets. ASC Topic 815 clarifies that the expected net future cash flows related to the associated servicing of a loan should be included in the measurement of all written loan commitments that are accounted for at fair value through earnings. The estimated fair values of IRLCs are based on the fair value of the related mortgage loans which is based upon observable market data. The initial and subsequent changes in value of IRLCs are recorded as a component of income from mortgage banking services, net, in our consolidated statements of income and comprehensive income.

We actively manage the risk profiles of our IRLCs and mortgage loans held-for-sale on a daily basis. To manage the price risk associated with IRLCs, we enter into forward sales of mortgage-backed securities (MBS) in an amount equal to the portion of the IRLC expected to close, assuming no change in mortgage interest rates. In addition, to manage the interest rate risk associated with mortgage loans held-for-sale, we enter into forward sales of MBS to deliver mortgage loans to third-party investors. The estimated fair values of forward sales of MBS and forward sales commitments are based on exchange prices or the dealer market price. The initial and subsequent changes in value on forward sales of MBS and forward sales commitments are a component of income from mortgage banking services, net, in our consolidated statements of income and comprehensive income.

We also occasionally enter into contracts with other mortgage bankers to purchase residential mortgage loans at a future date, which we refer to as Loan Purchase Commitments (LPCs). LPCs are accounted for as derivatives under ASC Topic 815 and recorded at fair value in prepaid expenses and other assets on our consolidated balance sheets. Subsequent changes in LPCs are recorded as a charge or credit to income from mortgage banking services, net, in our consolidated statements of income and comprehensive income.

We utilize derivative instruments to help manage the fair value changes in our MSRs. These derivative instruments are intended to economically hedge certain risks related to our MSRs. As such, these derivative instruments are not designated as accounting hedges. These derivatives may include To Be Announced (TBA) MBS, interest rate swaps, and options contracts and are valued based on quoted prices for similar assets in an active market with inputs that are observable. These derivative products are accounted for and recorded at fair value in prepaid expenses and other assets or accrued expenses and other liabilities on our consolidated balance sheets. Subsequent changes are recorded to income from mortgage banking services, net, in our consolidated statements of income and comprehensive income.

z.Lease Commitments - We determine if an arrangement is a lease or contains a lease at inception. Leases result in the recognition of right of use (“ROU”) assets and lease liabilities on our consolidated balance sheets. ROU assets represent the right to use an underlying asset for the lease term and are included in prepaid expenses and other assets in our consolidated balance sheets. Lease liabilities represent the obligation to make lease payments arising from the lease, measured on a discounted basis, and are included in accrued expenses and other liabilities in our consolidated balance sheets. We determine lease classification as operating or finance at the lease commencement date. We combine lease and non-lease components, such as common area and other maintenance costs, in calculating the ROU assets and lease liabilities for our office buildings.

At lease inception, the lease liability is measured at the present value of the lease payments over the lease term. The ROU asset equals the lease liability adjusted for any initial direct costs, prepaid or deferred rent, and lease incentives. We use the implicit rate when readily determinable, however, as most of the leases do not provide an implicit rate, we use our incremental borrowing rate based on the information available at the commencement date, which is based on our collateralized borrowing capabilities over a similar term as the related lease payments.

100