HILLS BANCORPORATION

The consolidated financial statements and supplementary data are included on pages 56 through 119.

To the Shareholders, Board of Directors, and Audit Committee

Hills, Iowa

Opinion on the Consolidated Financial Statements

We have audited the accompanying consolidated balance sheets of Hills Bancorporation (the “Company”) as of December 31, 2025 and 2024, the related consolidated statements of income, comprehensive income, stockholders’ equity, and cash flows for each of the years in the three-year period ended December 31, 2025, and the related notes (collectively referred to as the “financial statements”). In our opinion, the financial statements referred to above present fairly, in all material respects, the financial position of the Company as of December 31, 2025 and 2024, and the results of its operations and its cash flows for each of the years in the three-year period ended December 31, 2025, in conformity with accounting principles generally accepted in the United States of America.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the Company’s internal control over financial reporting as of December 31, 2025, based on criteria established in Internal Control – Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission and our report dated March 18, 2026, expressed an adverse opinion thereon.

Basis for Opinion

These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on the Company’s financial statements based on our audits.

We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with 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 audits 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 include examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.

Critical Audit Matter

The critical audit matter communicated below is a matter arising from the current-period audit of the financial statements that was communicated or required to be communicated to the audit committee and that: (1) relates to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of a critical audit matter does not alter in any way our opinion on the financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates.

Allowance for Credit Losses on Loans

Description of the Matter

The Company’s allowance for credit losses on loans (the “ACL”) was $58.2 million at December 31, 2025. As more fully described in Notes 1 and 3 to the financial statements, the ACL is an estimate of lifetime expected credit losses. The Company uses a discounted cash flow (DCF) model to estimate expected losses for most of the Company’s loan pools that exhibit similar risk characteristics. This model calculates an expected loss percentage for each loan class by considering the probability of default, using life-of-loan analysis periods for all loan segments, and the historical severity of loss, based on the aggregate net lifetime losses incurred per loan class. For each of these loan pools, the Company generates cash flow projections at the instrument level adjusting payment expectations for estimated prepayment speed, curtailments, time to recovery, probability of default, and loss given default. Additional qualitative adjustments are applied for risk factors that are not considered within the modeling process but are relevant in assessing the expected credit losses within the loan pools. Management utilizes a qualitative factor framework to provide a qualitative estimate of the expected credit losses inherent in the loan portfolio in relation to potential limitations of the quantitative model. Loans that do not share risk characteristics are evaluated on an individual basis.

We identified the qualitative adjustment component of the ACL as a critical audit matter. The principal considerations for our determination included the high degree of subjectivity, particularly as it relates to the qualitative factor framework included in the ACL and the overall aggregation of qualitative factors, and therefore, applying audit procedures required a higher degree of auditor judgment and subjectivity. In addition, during 2025, the Company identified a material weakness in internal control over financial reporting related to controls surrounding the framework used to determine qualitative adjustments to the ACL, which increased the extent of auditor judgment and audit effort necessary to evaluate the reasonableness of management’s qualitative factors and their aggregation.

How We Addressed the Matter in Our Audit

The primary procedures we performed related to this critical audit matter included:

•Obtained an understanding of the Company’s process for establishing the qualitative adjustment estimation process used in the ACL, including the key assumptions used to develop the qualitative adjustment framework.

•Obtained an understanding and evaluated and tested the design and operating effectiveness of controls relating to management’s estimate of the ACL, including controls over:

◦The completeness and accuracy of loan data; and

◦The identification of key qualitative factors, including whether the key qualitative factor adjustments are adequately supported and accurately applied.

◦The qualitative adjustment framework, including controls over governing the development, approval and application of management’s maximum loss rate used to constrain the qualitative allowance available for allocation.

•Evaluated the reasonableness of the key assumptions and data used to develop the qualitative adjustment framework, including considering the key data’s completeness and accuracy within the model.

•Evaluated the mathematical accuracy of the ACL model used, as well as the method for developing the qualitative adjustments.

•Evaluated the reasonableness of management’s qualitative adjustments by developing independent expectations, assessing consistency with observed portfolio trends and external economic indicators, and evaluating whether the aggregation of qualitative factors appropriately reflected risks not captured by the quantitative model.

/s/ Forvis Mazars, LLP

We have served as the Company’s auditor since 2012.

Springfield, Missouri

March 18, 2026

To the Shareholders, Board of Directors, and Audit Committee

Hills, Iowa

Opinion on the Internal Control Over Financial Reporting

We have audited Hills Bancorporation’s (the “Company”) internal control over financial reporting as of December 31, 2025, based on criteria established in Internal Control – Integrated Framework: (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO).

A material weakness is a deficiency, or a combination of deficiencies, in internal control over financial reporting, such that there is a reasonable possibility that a material misstatement of the Company’s annual or interim financial statements will not be prevented or detected on a timely basis. The following material weaknesses have been identified and included in management’s assessment.

•The Company did not maintain effective controls over financial reporting, including certain management review controls and activity-level controls over the period-end financial reporting process and controls to ensure that i) period end financial statements to be filed are correct, and ii) our independent auditor has completed its procedures prior to the filing of period-end financial statements.

•The Company did not maintain effective controls over the review, posting, and approval of manual journal entries.

•The Company did not maintain effective controls over the identification and disclosure of related party transactions.

•The Company did not maintain effective controls over the framework used to determine the qualitative component of the allowance for credit losses on loans and the review process to ensure qualitative adjustments are accurately determined and applied.

•The Company did not maintain effective controls over the determination of estimated useful lives and the timely identification and recording of dispositions of property and equipment.

•Management lacks sufficient depth and structure in the oversight of the financial reporting function and has insufficient staffing levels with specialized technical accounting and internal control expertise to effectively design controls and perform an adequate level of review over the period‑end financial reporting process.

These material weaknesses were considered in determining the nature, timing, and extent of auditing procedures applied in our audit of the Company’s consolidated financial statements, and this report does not affect our report dated March 18, 2026, on those consolidated financial statements.

In our opinion, because of the effect of the material weaknesses described above on the achievement of the objectives of the control criteria, the Company has not maintained effective internal control over financial reporting as of December 31, 2025, based on criteria established in Internal Control – Integrated Framework: (2013) issued by the COSO.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (“PCAOB”), the consolidated financial statements of the Company as of December 31, 2025 and 2024, and for each of the three years in the period ended December 31, 2025, and our report dated March 18, 2026, expressed an unqualified opinion on those financial statements.

Basis for Opinion

The Company’s management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying Management’s Report on Internal Control over Financial Reporting. Our responsibility is to express an opinion on the Company’s internal control over financial reporting based on our audit.

We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audit also included performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

Definitions and Limitations of Internal Control Over Financial Reporting

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of reliable financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions or that the degree of compliance with the policies or procedures may deteriorate.

/s/ Forvis Mazars, LLP

Springfield, Missouri

March 18, 2026

December 31, 2025 and 2024

(Amounts In Thousands, Except Shares)

(Amounts In Thousands, Except Per Share Amounts)

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY

(Amounts In Thousands, Except Share Data)

(Continued)

Note 1. Nature of Activities and Significant Accounting Policies

Nature of activities: Hills Bancorporation (the "Company") is a holding company engaged in the business of commercial banking. The Company's subsidiary is Hills Bank and Trust Company, Hills, Iowa (the “Bank”), which is wholly-owned. The Bank is a full-service commercial bank extending its services to individuals, businesses, governmental units and institutional customers primarily in the communities of Hills, Iowa City, Coralville, North Liberty, Lisbon, Mount Vernon, Kalona, Wellman, Cedar Rapids, Marion, Washington and Williamsburg, Iowa.

The Bank competes with other financial institutions and non-financial institutions providing similar financial products. While the chief operating decision-makers monitor the revenue streams of the various products and services, operations are managed, and financial performance is evaluated on a Company-wide basis. Although the loan activity of the Bank is diversified with commercial and agricultural loans, real estate loans, automobile, installment and other consumer loans, the Bank's credit is concentrated in real estate loans. Accordingly, all of the Company’s operations are considered by management to be aggregated inone reportable operating segment.

Accounting estimates: The preparation of consolidated financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amount 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.

Certain significant estimates: The allowance for credit losses, fair values of securities and other financial instruments, and share-based compensation expense involve certain significant estimates made by management. These estimates are reviewed by management routinely and it is reasonably possible that circumstances that exist at December 31, 2025 may change in the near-term and the effect could be material to the consolidated financial statements.

Principles of consolidation: The consolidated financial statements include the accounts of the Company and its subsidiary. All significant intercompany balances and transactions have been eliminated in consolidation.

Revenue recognition: Accounting Standards Codification ("ASC") 606, Revenue from Contracts with Customers ("ASC 606"), establishes principles for reporting information about the nature, amount, timing and uncertainty of revenue and cash flows arising from the Company’s contracts to provide goods or services to customers. The core principle requires an entity to recognize revenue to depict the transfer of goods or services to customers in an amount that reflects the consideration that it expects to be entitled to receive in exchange for those goods or services recognized as performance obligations are satisfied.

The majority of the Company’s revenue-generating transactions are not subject to ASC 606, including revenue generated from financial instruments, such as loans, letters of credit and investment securities as these activities are not subject to the requirements of ASC 606. Interest income on loans and investment securities is recognized on the accrual method in accordance with written contracts. Loan origination fees of mortgage loans originated for sale are recognized when the loans are sold.

Descriptions of the Company’s revenue-generating activities that are within the scope of ASC 606 are the following: Service charges and fees on deposit accounts represent general service fees for monthly account maintenance and activity- or transaction-based fees and consist of transaction-based revenue which includes interchange income, time-based revenue (service period), item-based revenue or some other individual attribute-based revenue. Revenue is recognized when the Company’s performance obligation is completed which is generally monthly for account maintenance services or when a transaction has been completed (such as a wire transfer). Payment for such performance obligations are generally received at the time the performance obligations are satisfied. Trust income represents monthly fees due from wealth management customers as consideration for managing the customers' assets. Wealth management and trust services include custody of assets, investment management, fees for trust services and similar fiduciary activities. Revenue is recognized when our performance obligation is completed each month, which is generally the time that payment is received.

A contract asset balance occurs when an entity performs a service for a customer before the customer pays consideration (resulting in a contract receivable) or before payment is due (resulting in a contract asset). A contract liability balance is an entity's obligation to transfer a service to a customer for which the entity has already received payment (or payment is due) from the customer. As of December 31, 2025 and 2024, the Company did not have any significant contract balances.

An entity is required to capitalize, and subsequently amortize into expense, certain incremental costs of obtaining a contract with a customer if these costs are expected to be recovered. The incremental costs of obtaining a contract are those costs that an entity incurs to obtain a contract with a customer that it would not have incurred if the contract had not been obtained (for example, sales commission). The Company utilizes the practical expedient which allows entities to immediately expense contract acquisition costs when the asset that would have resulted from capitalizing these costs would have been amortized in one year or less. The Company did not capitalize any contract acquisition costs for the years ending December 31, 2025 and 2024.

Cash and cash equivalents: The Company considers all investments with original maturities of three months or less to be cash equivalents. At December 31, 2025 and 2024, cash equivalents consisted primarily of deposits with other banks and federal funds sold. The Company maintains amounts in due from banks which, at times, may exceed federally insured limits. Management monitors these correspondent relationships, and the Company has not experienced any losses in such accounts.

Available-for-sale debt securities and the allowance for credit losses on available-for-sale debt securities: Available-for-sale ("AFS") securities consist of debt securities not classified as trading or held to maturity. Available-for-sale securities are stated at fair value, and unrealized holding gains and losses, net of the related deferred tax effect, are reported as a separate component of stockholders' equity. There were no trading or held to maturity securities as of December 31, 2025 or 2024.

Fair value measurement is based upon quoted market prices in active markets, if available. If quoted prices in active markets are not available, fair value is measured using pricing models or other model-based valuation techniques such as present value of future cash flows, which consider prepayment assumptions and other factors such as credit losses and market liquidity. Unrealized gains and losses are excluded from earnings and reported, net of tax, in other comprehensive income (loss) ("OCI"). Premiums on debt securities are amortized to the earliest call date and discounts on debt securities are accreted over the period to maturity of those securities. The method of amortization results in a constant effective yield on those securities (the interest method). Gains and losses on the sale of securities are recorded on the trade date and are determined using the specific identification method.

AFS debt securities in unrealized loss positions are evaluated for impairment related to credit losses at least quarterly. For AFS debt securities, a decline in fair value due to credit loss results in recording an allowance for credit losses to the extent the fair value is less than the amortized cost basis. Declines in fair value that have not been recorded through an allowance for credit losses, such as declines due to changes in market interest rates, are recorded through other comprehensive income, net of applicable taxes.

Impairment may result from credit deterioration of the issuer or collateral underlying the security. In performing an assessment of whether any decline in fair value is due to a credit loss, all relevant information is considered at the individual security level. For asset-backed securities performance indicators considered related to the underlying assets include default rates, delinquency rates, percentage of nonperforming assets, debt-to-collateral ratios, third-party guarantees, current levels of subordination, vintage, geographic concentration, analyst reports and forecasts, credit ratings and other market data. In assessing whether a credit loss exists, we compare the present value of cash flows expected to be collected from the security with the amortized cost basis of the security. If the present value of cash flows expected to be collected is less than the amortized cost basis for the security, a credit loss exists and an allowance for credit losses is recorded, limited to the amount the fair value is less than amortized cost basis.

If we intend to sell a debt security or more likely than not we will be required to sell the security before recovery of its amortized cost basis, the debt security is written down to its fair value and the write down is charged against the allowance for credit losses with any incremental impairment reported in earnings.

Accrued interest receivable on AFS debt securities, stock of the Federal Home Loan Bank, and Federal Reserve excess balance account totaled $6.81 million and $6.10 million at December 31, 2025 and 2024, respectively, and is excluded from the estimate of credit losses.

Stock of the Federal Home Loan Bank is carried at cost. The Company has evaluated the stock and determined there is no impairment.

Loans held for sale: Loans held for sale are stated at the lower of aggregate cost or estimated fair value. Loans are sold on a non-recourse basis with servicing released and gains and losses are recognized based on the difference between sales proceeds and the carrying value of the loan. The Company has had very few experiences of repurchasing loans previously sold into the secondary market. A specific reserve was not considered necessary based on the Company’s historical experience with repurchase activity.

Loans held for investment: Loans are stated at the amount of unpaid principal, net of deferred loan fees, and reduced by the allowance for credit losses ("ACL"). Accrued interest receivable on loans held for investment totaled $16.59 million and $15.30 million at December 31, 2025 and 2024, respectively, and is excluded from the estimate of credit losses. Interest income is accrued on the unpaid principal balance. Nonrefundable loan fees and origination costs are deferred and recognized as a yield adjustment over the life of the related loan.

The accrual of interest income on loans is discontinued when, in the opinion of management, there is reasonable doubt as to the borrower's ability to meet payments of interest or principal when they become due, which is generally when a loan is 90 days or more past due. When a loan is placed on nonaccrual status, all previously accrued and unpaid interest is reversed. Loans are returned to an accrual status when all of the principal and interest amounts contractually due are brought current and repayment of the remaining contractual principal and interest is expected. A loan may also return to accrual status if additional collateral is received from the borrower and, in the opinion of management, the financial position of the borrower indicates that there is no longer any reasonable doubt as to the collection of the amount contractually due. Payment received on nonaccrual loans are applied first to principal. Once principal is recovered, any remaining payments received are applied to interest income. As of December 31, 2025 and 2024, none of the Company’s nonaccrual loans were earning interest on a cash basis.

The policy for charging off loans is consistent throughout all loan categories. A loan is charged off based on criteria that includes but is not limited to: delinquency status, financial condition of the entire customer credit line and underlying collateral coverage, economic or external conditions that might impact full repayment of the loan, legal issues, overdrafts, and the customer’s willingness to work with the Company.

Allowance for credit losses for loans held for investment: The allowance for credit losses is an estimate of expected losses inherent within the Company's existing loans held for investment portfolio. The allowance for credit losses for loans held for investment, as reported in our consolidated balance sheet, is adjusted by a credit loss expense, which is reported in earnings, and reduced by the charge-off of loan amounts, net of recoveries.

The loan loss estimation process involves procedures to appropriately consider the unique characteristics of loan portfolio segments which consist of agricultural, 1 to 4 family first and junior liens, commercial, and consumer lending. These segments are further disaggregated into loan classes, the level at which credit risk is monitored. For each of these pools, the Company generates cash flow projections at the instrument level wherein payment expectations are adjusted for estimated prepayment speed, curtailments, time to recovery, probability of default, and loss given default. The modeling of expected prepayment speeds, curtailment rates, and time to recovery are based on historical internal data. The following provides the credit quality indicators and risk elements that are most relevant and most carefully considered and monitored for each loan portfolio segment.

Agricultural -Agricultural operating loans include loans made to finance agricultural production and other loans to farmers and farming operations. Agricultural loans also include mortgage loans secured by farmland. Agricultural operating loans, most of which are secured by crops and machinery, are provided to finance capital improvement and farm operations as well as acquisitions of livestock and machinery. The ability of the borrower to repay may be affected by many factors outside of the borrower’s control including adverse weather conditions, loss of livestock due to disease or other factors, declines in market prices for agricultural products and the impact of government regulations. The ultimate repayment of agricultural operating loans is dependent upon the profitable operation or management of the agricultural entity. Agricultural operating loans generally have a term of one year and may have a fixed or variable rate. The key economic forecast used in estimating expected credit losses for this segment is the Iowa unemployment rate.

Mortgage loans secured by farmland are made to individuals and businesses within the Company's trade area. The primary source of repayment is the cash flow generated by the collateral underlying the loan. The secondary repayment source would be the liquidation of the collateral. Terms for real estate loans secured by farmland range from one to ten years with an amortization period of 25 years or less. Generally, interest rates are fixed for mortgage loans secured by farmland. The key economic forecast used in estimating expected credit losses for this segment is the

Iowa unemployment rate.

1 to 4 Family First and Junior Liens -The 1 to 4 family first and junior liens portfolio segment is comprised of the single family and home equity loan classes, which are underwritten after evaluating a borrower's capacity to repay, credit, and collateral. Several factors are considered when assessing a borrower's capacity, including the borrower's employment, income, current debt, assets, and level of equity in the property. Credit refers to how well a borrower manages their current and prior debts as documented by a credit report that provides credit scores and the borrower's current and past information about their credit history. Collateral refers to the type and use of property, occupancy, and market value. Property appraisals are obtained to assist in evaluating collateral. Loan-to-property value and debt-to-income ratios, loan amount, and lien position are also considered in assessing whether to originate a loan. These borrowers are particularly susceptible to downturns in economic trends such as conditions that negatively affect housing prices and demand and levels of unemployment. The key economic forecast used in estimating expected credit losses for this segment is the Iowa unemployment rate.

Commercial -The commercial loan portfolio segment is comprised of the commercial real estate mortgage, multifamily residential mortgage, construction/land development and commercial and financial loan classes, whose underwriting standards consider the factors described for single family and home equity loan classes as well as others when assessing the borrower's and associated guarantors or other related party's financial position. These other factors include assessing liquidity, the level and composition of net worth, leverage, considering all other lender amounts and position, an analysis of cash expected to flow through the obligors including the outflow to other lenders, vacancies and prior experience with the borrower. This information is used to assess adequate financial capacity, profitability, and experience. Ultimate repayment of these loans is sensitive to interest rate changes, general economic conditions, liquidity, and availability of long-term financing. The key economic forecast used in estimating expected credit losses for this segment is the Iowa unemployment rate.

Consumer Lending -The Bank offers consumer loans to individuals including personal loans and automobile loans. These consumer loans typically have shorter terms, lower balances, higher yields and higher risks of default than real estate-related loans. Consumer loans collections are dependent on the borrower's continuing financial stability and are more likely to be affected by adverse personal circumstances. Collateral for these loans generally includes automobiles, boats, recreational vehicles and real estate. However, depending on the overall financial condition of the borrower, some loans are made on an unsecured basis. The collateral securing these loans may depreciate over time, may be difficult to recover and may fluctuate in value based on condition. Key economic forecasts used in estimating expected credit losses for this segment include the Iowa unemployment rate and the National real gross domestic product.

Obligations of State and Political Subdivisions – The obligations of state and political subdivisions portfolio segment consists solely of tax‑exempt loans made to state governments, municipalities, school districts, and other political subdivisions. Underwriting standards for this segment emphasize the borrower’s legal authority to incur debt, the stability and diversity of pledged revenue sources, historical operating performance, budgetary trends, and the overall financial capacity of the governmental entity. Additional considerations include the strength of taxing authority, the predictability of revenue collections, the presence of voter or legislative appropriation requirements, and the entity’s reliance on state or federal funding. Repayment of these obligations is generally supported by dedicated revenue streams or general obligation pledges, resulting in credit performance that has historically demonstrated low volatility and limited correlation with broader economic cycles. Given these characteristics, expected credit losses for this segment are estimated primarily using long‑run historical loss experience and internal credit assessments, and do not incorporate specific forward‑looking macroeconomic forecasts, as management has determined that traditional economic indicators do not meaningfully influence expected loss outcomes for this portfolio.

The allowance level is influenced by loan volumes, loan credit quality indicator migration or delinquency status, historic loss experience and other conditions influencing loss expectations, such as reasonable and supportable forecasts of economic conditions. The methodology for estimating the amount of expected credit losses reported in the allowance for credit losses has two basic components: first, a pooled component for estimated expected credit losses for pools of loans that share similar risk characteristics; and second, an asset-specific component involving individual loans that do not share risk characteristics with other loans and the measurement of expected credit losses for such individual loans. Depending on the nature of the pool of financial assets with similar risk characteristics, the Company uses a discounted cash flow method or remaining life method to estimate expected credit losses.

Discounted cash flow method: In estimating the component of the allowance for credit losses for loans that share similar risk characteristics with other loans, such loans are segregated into loan classes. Loans are designated into loan classes based on loans pooled by product types and similar risk characteristics or areas of risk concentration. In determining the allowance for credit losses, we derive an estimated credit loss assumption from a model that categorizes loan pools based on loan type and purpose. This model calculates an expected loss percentage for each loan class by considering the probability of default, using life-of-loan analysis periods for all loan segments, and the historical severity of loss, based on the aggregate net lifetime losses incurred per loan class. Such factors are used to adjust the historical probabilities of default and severity of loss so that they reflect management expectation of future conditions based on a reasonable and supportable forecast. Management utilizes a qualitative factor framework to provide a qualitative estimate of the expected credit losses inherent in the loan portfolio in relation to potential limitations of the quantitative model. The default and severity factors used to calculate the allowance for credit losses for loans that share similar risk characteristics with other loans are adjusted for differences between the historical period used to calculate historical default and loss severity rates and expected conditions over the remaining lives of the loans in the portfolio related to: (1) lending policies and procedures; (2) international, national, regional and local economic business conditions and developments that affect the collectability of the portfolio, including the condition of various markets; (3) the nature and volume of the loan portfolio including the terms of the loans; (4) the experience, ability, and depth of the lending management and other relevant staff; (5) the volume and severity of past due and adversely classified or graded loans and the volume of nonaccrual loans; (6) the quality of our loan review system; (7) the value of underlying collateral for collateral-dependent loans; (8) the existence and effect of any concentrations of credit and changes in the level of such concentrations; and (9) the effect of external factors such as competition and legal and regulatory requirements on the level of estimated credit losses in the existing portfolio.The framework provides for a level of risk approach to measure risk in each loan segment that may not be captured in the quantitative methodology, including improved risk environment, no additional risk, minimal additional risk, moderate risk and major or significant additional risk. The framework also includes a weighting component for management to consider which qualitative factors would have the highest impact on potential loan losses within each loan segment. Management uses the qualitative factor framework within the allowance for credit losses calculation to assess the risk level environment for each qualitative factor and weightings for each loan segment which is supported by various information including publicly available information, internal information specifically developed by management, or other relevant and reliable information.

The Company uses regression analysis of historical internal and peer data to determine which variables are best suited to be economic variables utilized when modeling lifetime probability of default and loss given default. This analysis also determines how expected probability of default and loss given default will react to forecasted levels of the economic variables.

For all DCF models, management has determined that four quarters represents a reasonable and supportable forecast period and reverts back to a historical loss rate over twelve quarters on a straight-line basis. Other internal and external indicators of economic forecasts are also considered by management when developing the forecast metrics.

Remaining life method: Expected credit losses for credit cards and overdrafts are determined through use of the remaining life method. The remaining life method utilizes average annual charge-off rates and remaining life to estimate the allowance for credit losses. This is done by estimating the amount and timing of principal payments expected to be received as payment for the balance outstanding as of the reporting period and applying those principal payments against the balance outstanding as of the reporting period along with the average annual charge-off rate until the expected payments have been fully allocated. Management applies the same qualitative factor framework for the remaining life method loan portfolios as the framework used for the discounted cash flow method loan portfolios.

Collateral dependent financial assets: For a loan that does not share risk characteristics with other loans, expected credit loss is measured based on net realizable value, that is, the difference between the discounted value of the expected future cash flows, based on the original effective interest rate, and the amortized cost basis of the loan. For these loans, we recognize expected credit loss equal to the amount by which the net realizable value of the loan is less than the amortized cost basis of the loan (which is net of previous charge-offs and deferred loan fees and costs), except when the loan is collateral dependent, that is, when the borrower is experiencing financial difficulty and repayment is expected to be provided substantially through the operation or sale of the collateral. In these cases, expected credit loss is measured as the difference between the amortized cost basis of the loan and the fair value of the collateral. The fair value of the collateral is adjusted for the estimated cost to sell if repayment or satisfaction of a loan is dependent on the sale (rather than only on the operation) of the collateral.

The Company’s estimate of the ACL reflects losses expected over the contractual life of the assets, adjusted for estimated prepayments or curtailments. The contractual term does not consider extensions, renewals or modifications unless the Company has identified a modification including a concession to a borrower experiencing financial difficulties. A modification of a loan to a borrower experiencing financial difficulties occurs when two conditions are met: 1) the borrower is experiencing financial difficulty and 2) concessions are made for the borrower's benefit that would not otherwise be considered for a borrower or transaction with similar credit risk characteristics.

Allowance for credit losses on off-balance sheet credit exposures, including unfunded loan commitments: The Company maintains a separate allowance for credit losses from off-balance-sheet credit exposures, including unfunded loan commitments, which is disclosed on the balance sheet. Management estimates the amount of expected losses by calculating a commitment usage factor over the contractual period for exposures that are not unconditionally cancellable by the Company and applying the loss factors used in the ACL methodology to the results of the usage calculation to estimate the liability for credit losses related to unfunded commitments for each loan type. No credit loss estimate is reported for off-balance-sheet (OBS) credit exposures that are unconditionally cancellable by the Company, such as credit card receivables, or for undrawn amounts under such arrangements that may be drawn prior to the cancellation of the arrangement. The allowance for credit losses on OBS credit exposures is adjusted as credit loss expense. Categories of OBS credit exposures correspond to the loan portfolio segments described previously.

Transfers of financial assets: Transfers of financial assets are accounted for as sales, when control over the assets has been surrendered. Control over transferred assets is deemed to be surrendered when (1) the assets have been isolated from the Company, (2) 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 (3) the Company does not maintain effective control over the transferred assets through an agreement to repurchase them before their maturity or the ability to unilaterally cause the holder to return specific assets.

Credit related financial instruments: In the ordinary course of business, the Company has entered into commitments to extend credit, including commitments under credit card arrangements, commercial letters of credit and standby letters of credit. Such financial instruments are recorded when they are funded.

Tax credit real estate: Tax credit real estate represents three multi-family rental properties, three assisted living rental properties, a multi-tenant rental property for persons with disabilities, and a multi-family senior living rental property, all of which are affordable housing projects as of December 31, 2025. In addition, in July 2024, the Company made a tax equity investment in an entity to provide for the historic preservation of a mixed use property in Cedar Rapids, Iowa. The Company has a 99% or greater limited partnership interest in each limited partnership or company. The investment in each was completed after the projects had been developed by the general partner or managing member. On a regular basis, the Company evaluates recoverability of the carrying value of the tax credit real estate investments to determine if there are indications of impairment. This is measured by a comparison of the carrying amount of the investments to the future undiscounted cash flows expected to be generated by the investment properties, including the low-income housing tax credits and any estimated proceeds from eventual disposition. If there is an indication of impairment, a valuation allowance would be established with a charge to expense. There were no indications of impairment based on management's evaluation and therefore no valuation allowance was determined necessary as of December 31, 2025 and 2024. Depreciation expense is provided on a straight-line basis over the estimated useful life of the assets. Expenditures for normal repairs and maintenance are charged to expense as incurred.

The investments in tax credit real estate are recorded for all years presented using the equity method of accounting, with the exception of the investments in the affordable housing project and historic preservation project described below. The operations of the properties are not expected to contribute significantly to the Company’s income before income taxes. However, the properties do contribute in the form of income tax credits, which lowers the Company’s effective tax rate. Once established, the credits on each property last forten years, five years for the historic preservation property, and are passed through from the limited partnerships or entity to the Company and reduces the consolidated federal tax liability of the Company.

In February 2021, the Company provided construction financing and contributed capital of $4.18 million to Del Ray Ridge LP, as limited partner, which owns and operates an affordable housing property in Iowa City, Iowa. The Company accounts for the investment in this tax credit real estate using the proportional amortization method as provided for under Accounting Standards Codification (ASC) 323-740. The investment qualifies for the proportional amortization method as it meets all of the criteria under ASC 323-740-25-1. Substantially all of the projected benefits are from tax credits and other tax benefits due to the minimum buyout clause included in the partnership agreement.

In July 2024, the Company provided construction financing and contributed capital of $2.38 million to SLE Iowa Building, LC, as investor member, which owns and operates a historically preserved mixed use property in Cedar Rapids, Iowa. Upon certain conditions being met, an additional $1.25 million of contributions to capital were made in February 2025. Additionally, a contribution of $1.19 million was made in September 2025 for a geothermal credit. The Company accounts for the investment in this tax credit real estate using the proportional amortization method as provided for under Accounting Standards Codification (ASC) 323-740. The investment qualifies for the proportional amortization method as it meets all of the criteria under ASC 323-740-25-1. Substantially all of the projected benefits are from tax credits and other tax benefits due to the minimum buyout clause included in the operating agreement

Property and equipment: Property and equipment is stated at cost less accumulated depreciation. Depreciation is computed using the straight-line method over the estimated useful lives of 10-40 years for buildings and improvements and 3-7 years for furniture and equipment.

Deferred income taxes: Deferred income taxes are provided under the asset and liability method whereby deferred tax assets are recognized for deductible temporary differences and net operating loss, and tax credit carryforwards and deferred tax liabilities are recognized for taxable temporary differences. Temporary differences are the differences between the reported amounts of assets and liabilities and their tax bases. Deferred tax assets are reduced by a valuation allowance when, in the opinion of management, it is more likely than not that some or all of the deferred tax assets will not be realized. Deferred tax assets and liabilities are adjusted for the effects of changes in tax laws and rates on the date of enactment. The Company recognizes the effect of income tax positions only if those positions are more likely than not of being sustained. Recognized income tax positions are measured at the largest amount that is greater than 50% likely of being realized. Changes in recognition or measurement are reflected in the period in which the change in judgment occurs. Interest and penalties on unrecognized tax benefits are classified as other noninterest expense. As of December 31, 2025 and 2024, the Company had no material unrecognized tax benefits.

Goodwill: Goodwill represents the excess of cost over the fair value of the net assets acquired, and is not subject to amortization, but requires, at a minimum, annual impairment tests for intangibles that are determined to have an indefinite life.

Other real estate: Other real estate represents property acquired through foreclosures and settlements of loans. Property acquired is carried at the lower of the principal amount of the loan outstanding at the time of acquisition, plus any acquisition costs, or the estimated fair value of the property, less disposal costs. The Bank will obtain updated appraisals to determine the estimated fair value of the property based on the type of collateral securing the loan and the date of the latest appraisal. Subsequent write downs estimated on the basis of later valuations are charged to net loss on sale of other real estate owned and other repossessed assets. Net operating expenses incurred in maintaining such properties are charged to other non-interest expense within the outside services line on the statements of income. Net capital expenditures incurred are capitalized to the property. Other real estate is included in other assets on the consolidated balance sheets totaling $0.5 million and $1.0 million as of December 31, 2025 and 2024, respectively.

Derivative financial instruments: The Bank uses interest rate swaps as part of its interest rate risk management. Financial Accounting Standards Board (FASB) Accounting Standards Codification (ASC) Topic 815 establishes accounting and reporting standards for derivative instruments and hedging activities. The Bank records all interest rate swaps on the balance sheet at fair value. Derivatives used to hedge the exposure to variability in expected future cash flows are considered cash flow hedges. To qualify for hedge accounting, the Bank must comply with the detailed rules and documentation requirements at the inception of the hedge, and hedge effectiveness is assessed at inception and periodically throughout the life of the hedging relationship.

For derivatives designated as cash flow hedges, the changes in the fair value of the derivatives is initially reported in other comprehensive income and subsequently reclassified to interest income or expense when the hedged transaction affects earnings. The Bank assesses the effectiveness of each hedging relationship by comparing the cumulative changes in cash flows of the derivative hedging instruments with the cumulative changes in cash flows of the designated hedged item or transaction. No component of the change in the fair value of the hedging instrument is excluded from the assessment of hedge effectiveness.

The Bank does not use derivatives for trading or speculative purposes.

Earnings per share: Basic earnings per share is computed using the weighted average number of actual common shares outstanding during the period. Diluted earnings per share reflects the potential dilution that would occur from the exercise of common stock options outstanding. ESOP shares are considered outstanding for this calculation unless unearned.

The following table presents calculations of earnings per share:

Stock awards and options: Compensation expense for stock and stock options issued through the stock award plan is accounted for using the fair value method prescribed by FASB ASC 718, “Share-Based Payment” (“ASC 718”). Under this method, compensation expense is measured and recognized for all stock-based awards made to employees and directors based on the fair value of each award as of the date of the grant.

Common stock held by ESOP: The Company's maximum cash obligation related to these shares is classified outside stockholders' equity because the shares are not readily traded and could be put to the Company for cash.

Treasury stock: Treasury stock is accounted for by the cost method, whereby shares of common stock reacquired are recorded at their purchase price.

Trust department assets: Property held for customers in fiduciary or agency capacities is not included in the accompanying consolidated balance sheets, as such items are not assets of the Company.

Release of income tax effects from accumulated other comprehensive income: The Company releases income tax effects from accumulated other comprehensive income (“AOCI”) using the specific identification approach. Under this method, the income tax effects associated with each component of AOCI are released into income in the same period that the related pre‑tax amounts are reclassified from AOCI to earnings. The Company does not reclassify any stranded tax effects related to changes in federal corporate tax rates and will release such amounts, if any, when the underlying AOCI component is subsequently reclassified to earnings.

Revision of Comparative Disclosure: During 2025, management identified that certain historical asset disposals had not been reflected in the Company’s property and equipment subledger. The Company evaluated this matter in accordance with ASC 250, Accounting Changes and Error Corrections, and concluded that the omission was not qualitatively material to any previously issued financial statements. Because the Company presents property and equipment on the balance sheet on a net basis, this revision did not impact the Company’s previously issued consolidated balance sheets, statements of income, statements of cash flows, or stockholders’ equity. Accordingly, the Company revised the comparative gross presentation of property and equipment and accumulated depreciation within the related footnote disclosures for the year ended December 31, 2024. See Note 4 Property and Equipment for additional information.

Effect of New Financial Accounting Standards

Accounting guidance adopted in 2025

In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740)Improvements to Income Tax Disclosures. The FASB is issuing this ASU to enhance the transparency and decision usefulness of income tax disclosures. The amendments in this ASU require that public business entities on an annual basis disclose specific categories in the rate reconciliation, provide additional information for reconciling items that meet a quantitative threshold, disclose the amount of income taxes paid disaggregated by federal, state and foreign taxes and other disclosures. For public business entities, the amendments are effective for annual periods beginning after December 15, 2024. Early adoption is permitted for annual financial statements that have not yet been issued or made available for issuance. The Company adopted this guidance as of December 31, 2025 on a retrospective basis. See Note 11 Income Taxes for additional information.

In March 2024, the FASB issued ASU 2024-01, Compensation - Stock Compensation (Topic 718)Scope Application of Profits Interest and Similar Awards. The FASB is issuing this ASU to improve generally accepted accounting principles by adding an illustrative example to demonstrate how an entity should apply the scope guidance to determine whether profits interest and similar awards ("profit interest awards") should be accounted for in accordance with Topic 718, Compensation - Stock Compensation. The illustrative example is intended to reduce 1) complexity in determining whether a profits interest award is subject to the guidance in Topic 718 and 2) existing diversity in practice. For public business entities, the amendments are effective for annual periods beginning after December 15, 2024, and interim periods within those annual periods. Early adoption is permitted for both interim and annual financial statements that have not yet been issued or made available for issuance. The amendments in this Update should be applied either (1) retrospectively to all prior periods presented in the financial statements or (2) prospectively to profits interest and similar awards granted or modified on or after the date at which the entity first applies the amendments. The adoption of the ASU on a prospective basis by the Company on January 1, 2025 did not have a material impact on the financial statements.

Accounting guidance pending adoption as of December 31, 2025

In November 2024, the FASB issued ASU 2024-03, Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses. This ASU requires public companies to disclose, in the notes to financial statements, specified information about certain costs and expenses at each interim and annual reporting period. Specifically, they will be required to:

•Disclose the amounts of (a) employee compensation; and (b) depreciation included in each relevant expense caption.

•Include certain amounts that are already required to be disclosed under current generally accepted accounting principles (GAAP) in the same disclosure as the other disaggregation requirements.

•Disclose a qualitative description of the amounts remaining in relevant expense captions that are not separately disaggregated quantitatively.

•Disclose the total amount of selling expenses and, in annual reporting periods, an entity’s definition of selling expenses.

This ASU is effective for public business entities for annual reporting periods beginning after December 15, 2026, and interim reporting periods beginning after December 15, 2027. Early adoption is permitted. A public business entity should apply ASU No. 2024-03 prospectively to financial statements issued for reporting periods beginning after the effective date of ASU No. 2024-03. The disclosures required ASU No. 2024-03 do not need to be included in financial statements for reporting periods beginning before the effective date that are being presented for comparative purposes with financial statements issued for periods after the effective date. The Company is in the process of evaluating the impact of this ASU on the financial statements.

In November 2025, the FASB issued ASU 2025‑09, Derivatives and Hedging (Topic 815): Hedge Accounting Improvements, which provides targeted amendments intended to enable entities to apply hedge accounting to a broader range of highly effective economic hedges and to better align hedge accounting outcomes with risk‑management activities. The amendments are effective for annual reporting periods beginning after December 15, 2026, including interim periods within those annual periods, and early adoption is permitted. The Company currently has no derivative positions outstanding; however, because it may enter into derivative or hedging relationships in future periods, the Company is evaluating the guidance to determine the potential impact on its consolidated financial statements and the method of adoption. At this time, the Company has not yet determined the expected impact of this update upon adoption.

In December 2025, the FASB issued ASU 2025-11, Interim Reporting (Topic 270), which improves the navigability of the required interim disclosures, provides clarity as to when it is applicable, and provides additional guidance on what disclosures are required in interim reporting periods by establishing a disclosure principle. The guidance is effective for interim reporting periods beginning in 2028 and can be applied either prospectively or retrospectively. The Company is currently evaluating the updated guidance to assess the impact and determining its method of adoption

In December 2025, the FASB issued ASU 2025‑12, Codification Improvements, which provides technical corrections, clarifications, and other minor enhancements across numerous areas of the Accounting Standards Codification. The amendments address 33 issues, including clarifications related to diluted earnings per share, lease receivable disclosures, and other areas where existing guidance was ambiguous or difficult to apply. The amendments are effective for annual reporting periods beginning after December 15, 2026, including interim periods within those annual periods. ASU 2025‑12 contains mixed transition requirements. Issue 4, relating to diluted EPS, must be adopted retrospectively, while all other amendments may be applied either prospectively or retrospectively, at the entity’s election on an issue‑by‑issue basis. The Company is currently evaluating the impact of ASU 2025‑12 on its accounting policies, processes, and disclosures; however, the Company does not expect adoption of this update to have a material effect on its consolidated financial statements.

Note 2. Investment Securities

The carrying values of investment securities at December 31, 2025 and December 31, 2024 are summarized in the following table (Amounts in Thousands):

Investment securities have been classified in the consolidated balance sheets according to management’s intent. Available-for-sale securities consist of debt securities not classified as trading or held to maturity. Available-for-sale securities are stated at fair value, and unrealized holding gains and losses, net of the related deferred tax effect, are reported as a separate component of stockholders’ equity. Municipal bonds are comprised of general obligation bonds and revenue bonds issued by various municipal corporations. As of December 31, 2025 and 2024, all securities held were rated investment grade based upon external ratings where available and, where not available, based upon management knowledge of the local issuers and their financial situations. The Company had no securities designated as trading or held to maturity in its portfolio at December 31, 2025 or 2024.

The carrying amount of available-for-sale securities and their approximate fair values were as follows (Amounts in Thousands):

The amortized cost and estimated fair value of available-for-sale securities classified according to their contractual maturities at December 31, 2025, were as follows (in thousands) below.

Expected maturities of MBS may differ from contractual maturities because the mortgages underlying the securities may be called or prepaid without any penalties. Therefore, these securities are not included in the maturity categories in the above summary.

As of December 31, 2025, investment securities with a market value of $154.03 million were pledged to collateralize other borrowings. As of December 31, 2025, there were no holdings of securities of any one issuer, other than the U.S. government and its agencies, in an amount greater than 10% of stockholders' equity.

Sales proceeds and gross realized gains and losses on available-for-sale securities were as follows (in thousands):

The following table shows the Company’s investments’ gross unrealized losses and fair value, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position at December 31, 2025 and 2024 (Amounts in Thousands):

The Company considered the following information in reaching the conclusion that the unrealized losses disclosed in the table above are not attributable to credit losses. None of the unrealized losses in the above table were due to the deterioration in the credit quality of any of the issues that might result in the non-collection of contractual principal and interest. The unrealized losses are due to changes in interest rates. The Company completed several balance sheet repositioning transactions related to its investment securities portfolio throughout the last four months of 2025. This consisted of the sale of lower-yielding AFS debt securities resulting in a pre-tax realized loss on the sales of $9.63 million in total for 2025. All of the proceeds from the sale of these securities were used to purchase AFS debt securities at higher yields to improve income going forward, while maintaining the liquidity provided by the investment portfolio. Management has concluded that it is more likely than not that the Company will not be required to sell these securities prior to recovery of the amortized cost basis. The securities are of high credit quality (investment grade credit ratings) and principal and interest payments are made timely with no payments past due as of December 31, 2025. The fair value is expected to recover as the securities approach maturity. The Company evaluates whether a credit loss exists by monitoring to ensure it has adequate credit support considering the nature of the investment, number and significance of investments in an unrealized loss position, collectability or delinquency issues, the underlying financial statements of the issuers, credit ratings and subsequent changes thereto, and other available relevant information. Considering the above factors, management has determined that no allowance for credit losses is necessary for the securities portfolio as of December 31, 2025.

Note 3. Loans

Classes of loans are as follows:

Changes in the allowance for credit losses (ACL) on loans for the years ended December 31, 2025, 2024 and 2023 are as follows:

Changes in the ACL for off-balance sheet credit exposures for the years ended December 31, 2025, 2024 and 2023 were as follows:

Credit loss expense (benefit) for off-balance sheet credit exposures is included in credit loss expense on the consolidated statements of income for the years ended December 31, 2025, 2024 and 2023.

Management regularly reviews loans in the portfolio to assess credit quality indicators and to determine appropriate loan classification and grading in accordance with applicable bank regulations. The Company's risk rating methodology assigns risk ratings ranging from 1 to 6, where a higher rating represents higher risk. The Company differentiates its lending portfolios into loans sharing common risk characteristics for which expected credit loss is measured on a pool basis and loans not sharing common risk characteristics for which credit loss is measured individually.

The below are descriptions of the credit quality indicators:

Excellent – Excellent rated loans are prime quality loans covered by highly liquid collateral with generous margins or supported by superior current financial conditions reflecting substantial net worth, relative to total credit extended, and based on assets of a stable and non-speculative nature whose values can be readily verified. Identified repayment source or cash flow is abundant and assured. Loans are secured with cash, cash equivalents, or collateral with very low loan to values. The borrower would qualify for unsecured debt and guarantors provide excellent secondary support to the relationship. The borrower has a long-term relationship with Hills Bank, maintains high deposit balances and has an established payment history with Hills Bank and an established business in an established industry.

Good – Good rated loans are adequately secured by readily marketable collateral or good financial condition characterized by liquidity, flexibility and sound net worth. Loans are supported by sound primary and secondary payment sources and timely and accurate financial information. The relationship is not quite as strong as a borrower that is assigned an excellent rating but still has a very strong liquidity position, low leverage, and track record of strong performance. These loans have a strong collateral position with limited risk to bank capital. The collateral will not materially lose value in a distressed liquidation. Guarantors provide additional secondary support to mitigate possible bank losses. The borrower has a long-term relationship with Hills Bank with an established track record of payments; loans with shorter remaining loan amortization; deposit balances are consistent; loan payments could be made from cash reserves in the interim period; and source of income is coming from a stable industry.

Satisfactory – Satisfactory rated loans are loans to borrowers of average financial means not especially vulnerable to changes in economic or other circumstances, where the major support for the extension is sufficient collateral of a marketable nature, and the primary source of repayment is seen to be clear and adequate. The borrower's financial performance is consistent, ratios and trends are positive and the primary repayment source can clearly be identified and supported with acceptable financial information. The loan relationship could be vulnerable to changes in economic or industry conditions but have the ability to absorb unexpected issues. The loan collateral coverage is considered acceptable and guarantors can provide financial support but net worth might not be as liquid as a 1 or 2 rated relationship. The borrower has an established relationship with Hills Bank. The relationship is making timely loan payments, any operating line is revolving and deposit balances are positive with limited to no overdrafts. Management and industry is considered stable.

Monitor – Monitor rated loans are identified by management as warranting special attention for a variety of reasons that may bear on ultimate collectability. This maybe due to adverse trends, a particular industry, loan structure, or repayment that is dependent on projections, or a one-time occurrence. The relationship liquidity levels are minimal and the borrower’s leverage position is brought into question. The primary repayment source is showing signs of being stressed or is not proven. If the borrower performs as planned, the loan will be repaid. The collateral coverage is still considered acceptable but there might be some concern with the type of real estate securing the debt or highly dependent on chattel assets. Some loans may be better secured than others. Guarantors still provide some support but there is not an abundance of financial strength supporting the guaranty. A monitor credit may be appropriate when the borrower is experiencing rapid growth which is impacting liquidity levels and increasing debt levels. Other attributes to consider would include if the business is a start-up or newly acquired, if the relationship has significant financing relationships with other financial institutions, the quality of financial information being received, management depth of the company, and changes to the business model. The track history with Hills Bank has some deficiencies such as slow payments or some overdrafts.

Special Mention – Special mention rated loans are supported by a marginal payment capacity and are marginally protected by collateral. There are identified weaknesses that if not monitored and corrected may adversely affect the Company’s credit position. A special mention credit would typically have a weakness in one of the general categories (cash flow, collateral position or payment history) but not in all categories. Potential indicators of a special mention would include past due payments, overdrafts, management issues, poor financial performance, industry issues, or the need for additional short-term borrowing. The ability to continue to make payments is in question; there are “red flags” such as past due payments, non-revolving credit lines, overdrafts, and the inability to sell assets. The borrower is experiencing delinquent taxes, legal issues, etc., obtaining financial information has become a challenge, collateral coverage is marginal at best, and the value and condition could be brought into question. Collateral document deficiencies have been noted and if not addressed, could become material. Guarantors provide minimal support for this relationship. The credit may include an action plan or follow up established in the asset quality process. There is a change in the borrower’s communication pattern. Industry issues may be impacting the relationship. Adverse credit scores or history of payment deficiencies could be noted.

Substandard – Substandard loans are not adequately supported by the paying capacity of the borrower and may be inadequately collateralized. These loans have a well-defined weakness or weaknesses. Full repayment of the loan(s) according to the original terms and conditions is in question or not expected. For these loans, it is more probable than not that the Company could sustain some loss if the deficiency(ies) is not corrected. There are identified shortfalls in the primary repayment source such as carry over debt, past due payments, and overdrafts. Obtaining quality and timely financial information is a weakness. The loan is under secured with exposure that could impact bank capital. It appears the liquidation of collateral has become the repayment source. The collateral may be difficult to foreclose or have little to no value. Collateral documentation deficiencies have been noted during the review process. Guarantor(s) provide minimal to no support of the relationship. The borrower’s communication with the Bank continues to decrease and the borrower is not addressing the situation. There is some concern about the borrower’s ability and willingness to repay the loans. Problems may be the result of external issues such as economic or industry related issues.

The following tables present the credit quality indicators and origination years by type of loan in each category as of December 31, 2025 (amounts in thousands):

The following tables present total loans by risk categories and gross charge-offs by year of origination as of December 31, 2024 (amounts in thousands):

Past due loans as of December 31, 2025 and 2024 were as follows:

The Company does not have a significant amount of loans that are past due less than 90 days where there are serious doubts as to the ability of the borrowers to comply with the loan repayment terms.

Accruing loans past due 90 days or more increased $1.67 million from December 31, 2024 to December 31, 2025. As of December 31, 2025 and 2024, accruing loans past due 90 days or more were 0.07% and 0.03% of total loans, respectively. The average balance of the accruing loans past due 90 days or more increased in 2025 as compared to 2024. The average 90 days or more past due accruing loan balance per loan was $0.23 million as of December 31, 2025 compared to $0.17 million as of December 31, 2024. The loans 90 days or more past due and still accruing are believed to be adequately collateralized. Loans are placed on nonaccrual status when management believes the collection of future principal and interest is not reasonably assured.

Certain nonaccrual loan information by loan type at December 31, 2025 and 2024 was as follows:

The allowance for credit losses incorporates an estimate of lifetime expected credit losses and is recorded on each asset upon asset origination or acquisition. The starting point for the estimate of the allowance for credit losses is historical loss information, which includes losses from modifications of receivables to borrowers experiencing financial difficulty. An assessment of whether a borrower is experiencing financial difficulty is made on the date of a modification.

Because the effect of most modifications made to borrowers experiencing financial difficulty is already included in the allowance for credit losses because of the measurement methodologies used to estimate the allowance, a change to the allowance for credit losses is generally not recorded upon modification.

In some cases, the Company will modify a certain loan by providing multiple types of concessions. Typically, one type of concession, such as a term extension, is granted initially. If the borrower continues to experience financial difficulty, another concession, such as principal forgiveness, may be granted.

The following table shows the amortized cost basis at the end of the reporting period of the loans modified to borrowers experiencing financial difficulty, disaggregated by class of financing receivable and type of concession granted (numbers in thousands):

(1)Modification converted loan from principal and interest payments to interest-only and the interest rate remained unchanged. Modification reduced monthly payment amounts for the borrower.

The following table describes the financial effect of the modifications made to borrowers experiencing financial difficulty for the years ended December 31, 2025, 2024, and 2023:

(1)In 2024, the modification to mortgage, farmland provided a payment deferral, which temporarily reduced monthly payment amounts for the borrowers.

Upon the Company's determination that a modified loan (or portion of a loan) has subsequently been deemed uncollectible, the loan (or a portion of the loan) is written off. Therefore, the amortized cost basis of the loan is reduced by the uncollectible amount and the allowance for credit losses is adjusted by the same amount.

There were no financing receivables that had a payment default during the period and were modified in the 12 months before default to borrowers experiencing financial difficulty.

The Company closely monitors the performance of the loans that are modified to borrowers experiencing financial difficulty to understand the effectiveness of its modification efforts. The following table depicts the performance of loans that have been modified in the last 12 months (numbers in thousands):

The following tables present the amortized cost basis of collateral dependent loans, by the primary collateral type, which are individually evaluated to determine expected credit losses, and the related ACL allocated to these loans as of December 31, 2025 and 2024:

The extent to which collateral secures collateral-dependent loans is provided in the previous individually analyzed loans table and changes in the extent to which collateral secures its collateral-dependent loans are described below. Collateral-dependent loans decreased $2.06 million from December 31, 2024 to December 31, 2025. Collateral-dependent loans include any loan that has been placed on nonaccrual status, accruing loans past due 90 days or more and loans made to borrowers with financial difficulties. Collateral-dependent loans also include loans that, based on management’s evaluation of current information and events, the Company expects to be unable to collect in full according to the contractual terms of the original loan agreement. Collateral-dependent loans were 0.88% of loans held for investment as of December 31, 2025 and 0.97% as of December 31, 2024. The decrease in collateral-dependent loans is primarily due to a decrease in nonaccrual loans of $6.31 million. There were no significant changes noted in the extent to which collateral secures collateral-dependent loans.

The Company regularly reviews a substantial portion of the loans in the portfolio and assesses whether the loans share common risk characteristics for which expected credit loss is measured on a pool basis or if the loans do not share common risk characteristics and therefore expected credit loss is measured on an individual loan basis. If the loans are assessed for credit losses on an individual basis, the Company determines if a specific allowance is appropriate. In addition, the Company's management also reviews and, where determined necessary, provides allowances for particular loans based upon (1) reviews of specific borrowers and (2) management’s assessment of areas that management considers are of higher credit risk, including loans that have been restructured or modified to a borrower experiencing financial difficulties. Loans that are determined not to be collateral-dependent and for which there are no specific allowances are classified into one or more risk categories and expected credit loss is measured on a pool basis. See Note 1 for further discussion of the allowance for credit losses for loans held for investment.

Specific allowances for credit losses on loans assessed individually are established if the loan balances exceed the net present value of the relevant future cash flows or the fair value of the relevant collateral based on updated appraisals and/or updated collateral analysis for the properties if the loan is collateral dependent. The Company may recognize a charge off or record a specific allowance related to an individually analyzed loan if there is a collateral shortfall or it is unlikely the borrower can make all principal and interest payments as contractually due.

For loans that are collateral dependent, losses are evaluated based on the portion of a loan that exceeds the fair market value of the collateral. In general, this is the amount that the carrying value of the loan exceeds the related appraised value less estimated costs to sell the collateral. Generally, it is the Company’s policy not to rely on appraisals that are older thanone year prior to the date the credit loss is being measured. The most recent appraisal values may be adjusted if, in the Company’s judgment, experience and other market data indicate that the property’s value, use, condition, exit market or other variables affecting its value may have changed since the appraisal was performed. The charge off or loss adjustment supported by an appraisal is considered the minimum charge off. Any adjustments made to the appraised value are to provide an additional charge off or specific reserve based on the applicable facts and circumstances. In instances where there is an estimated decline in value, a specific reserve may be provided or a charge off taken pending confirmation of the amount of the loss from an updated appraisal. Upon receipt of the new appraisals, an additional specific reserve may be provided or charge off taken based on the appraised value of the collateral. On average, appraisals are obtained withinone month of order.

The Company has not experienced any significant time lapses in recognizing the required provisions for collateral dependent loans, nor has the Company delayed appropriate charge-offs. When an updated appraisal value has been obtained, the Company has used the appraisal amount in helping to determine the appropriate charge-off or required reserve. The Company also evaluates any changes in the financial condition of the borrower and guarantors (if applicable), economic conditions, and the Company’s loss experience with the type of property in question. Any information utilized in addition to the appraisal is intended to identify additional charge-offs or provisions, not to override the appraised value.

Note 4. Property and Equipment

Property and equipment are stated at cost less accumulated depreciation. Depreciation is computed using the straight‑line method over the estimated useful lives of the related assets, which range from 3 to 40 years. Expenditures for maintenance and repairs are expensed as incurred, while major improvements are capitalized.

The major classes of property and equipment and the total accumulated depreciation are as follows:

Note 5. Leases

The Bank leases branch offices, parking facilities and certain equipment under operating leases. The leases have remaining lease terms of 1 year to 9 years, some of which include options to extend the leases for up to 10 years, and some of which include options to terminate the leases within 4 years. As the options are reasonably certain to be exercised, they are recognized as part of the right-of-use assets and lease liabilities.

For the years ended December 31, 2025 and 2024, total operating lease expense was $0.48 million and $0.55 million, respectively, and is included in occupancy expenses in the consolidated statement of income. Included in this were $0.44 million and $0.46 million of operating lease costs, respectively, $0.03 million and $0.03 million of short term lease costs, respectively, and $0.01 million and $0.06 million of variable lease costs, respectively.

For the years ended December 31, 2025 and 2024, cash paid for amounts included in the measurement of operating lease liabilities was $0.44 million and $0.46 million, respectively, and no right-of-use assets were obtained in exchange for lease obligations.

As of December 31, 2025 and 2024, operating lease right-of-use assets included inother assets were $1.60 million and $1.87 million, respectively. Operating lease liabilities included inother liabilities were $1.71 million and $1.97 million, respectively. The weighted average remaining lease term for operating leases was 7.00 years and 7.75 years, respectively, and the weighted average discount rate for operating leases was 3.68% and 3.68%, respectively. Discount rates used were determined from FHLB borrowing rates for comparable terms.

As of December 31, 2025, maturities of lease liabilities were as follows:

Note 6. Interest - Bearing Deposits

A summary of these deposits is as follows:

Included in savings, were brokered deposits totaling $35.17 million and $34.75 million as of December 31, 2025 and 2024, respectively, with a weighted average interest rate of 4.12% and 4.51% as of December 31, 2025 and 2024, respectively.

Time deposits have a maturity as follows:

Note 7. Short-term Borrowings

The following table sets forth selected information for other borrowings each of which having a maturity of less than one year:

The Company has federal funds lines available totaling $175.00 million from multiple correspondent banking relationships as of December 31, 2025 and 2024, respectively. Of the total federal funds lines available, $48.49 million is secured by available for sale securities, and the remaining fed funds lines available are unsecured.

The Company's bank term funding program borrowings were secured by available for sale securities. As of December 31, 2025 there were no borrowings from the bank term funding program.

The Company's FHLB daily reset advances are secured by collateral provided by the Company's 1 to 4 family residential, commercial real estate, agricultural real estate first mortgages and multi-family loans as discussed in Note 8. The weighted average interest rate on these borrowings outstanding was 3.98% and 4.62%as of December 31, 2025 and 2024, respectively.

The Company also has availability to borrow from the Federal Reserve Bank Discount Window of $105.54 million and $100.00 million as of December 31, 2025 and 2024, respectively, that is secured by available for sale securities.

Note 8. Federal Home Loan Bank Borrowings

As of December 31, 2025 and 2024, the borrowings were as follows:

To participate in the FHLB advance program, the Company is required to have an investment in FHLB stock. The Company’s investment in FHLB stock was $32.06 million and $28.02 million at December 31, 2025 and 2024, respectively. The Company has the ability to borrow against and had provided 1-4 family first mortgages, agricultural real estate, commercial real estate and multi-family loans totaling $1.051 billion as of December 31, 2025 and $996.70 million as of December 31, 2024 and there was $651.22 million and $564.69 million borrowed against this collateral as of December 31, 2025 and 2024, respectively. See Note 7 for FHLB daily reset advances.

Note 9. Accumulated Other Comprehensive Loss

The components of accumulated other comprehensive loss (AOCI), included in stockholders’ equity, are as follows:

Note 10. Employee Benefit Plans

The Company has an Employee Stock Purchase Plan (the “ESPP”). For each quarterly offering period, eligible employees can elect to contribute from 1.00% to 15.00% of their compensation. The purchase price is the lesser of 90.00% of the fair market value on the first day of the offering period or the last day of the offering period. The maximum dollar amount any one employee can elect to contribute in a year is $10,000. Through the ESPP 5,078,5,864, and 6,550 shares of stock were purchased by employees of the Bank during the years ended December 31, 2025, 2024, and 2023, respectively.

The Company has an Employee Stock Ownership Plan (the "ESOP") to which it makes discretionary cash contributions. The Company's contribution to the ESOP totaled $1.44 million, $1.37 million and $1.40 million for the years ended December 31, 2025, 2024 and 2023, respectively. The 2025, 2024 and 2023 discretionary contribution rate was 4.50% of qualified salaries.

In the event a terminated plan participant desires to sell his or her shares of the Company stock, or for certain employees who elect to diversify their account balances, the Company may be required to purchase the shares from the participant at their fair value. To the extent that shares of common stock held by the ESOP are not readily traded, a sponsor must reflect the maximum cash obligation related to those securities outside of stockholders' equity. The Company obtains a quarterly independent appraisal of the shares of stock. As of December 31, 2025 and 2024, the shares held by the ESOP, fair value and maximum cash obligation were as follows:

The Company has a profit-sharing plan with a 401(k) feature, which provides for discretionary annual contributions in amounts to be determined by the Board of Directors. The Company made a 4.50% or $1.44 million, $1.37 million, and $1.40 million in contribution to the profit sharing plan for the years ended December 31, 2025, 2024, and 2023, respectively. The Company recorded matching contributions under its 401(k) plan to salaries and employee benefits expense of $0.29 million in 2025, $0.28 million in 2024, and $0.28 million in 2023.

The Company provides a deferred compensation program for executive officers. This program allows executive officers to elect to defer a portion of their salaried compensation for payment by the Company at a subsequent date. The executive officers can defer up to 30% of their base compensation. Any amount so deferred is credited to the executive officer’s deferred compensation account and converted to units equivalent in value to the fair market value of a share of stock in Hills Bancorporation. The “stock units” are book entry only and do not represent an actual purchase of stock. The executive officer’s account is adjusted each year for dividends paid and the change in the market value of Hills Bancorporation stock. The deferrals and earnings grow tax deferred until withdrawn from the plan. Earnings credited to the individual’s accounts are recorded as compensation expense when earned. The deferred compensation liability is recorded in other liabilities and totals $0.00 million and $0.05 million at December 31, 2025 and 2024, respectively. Expense (income) related to the deferred compensation plan was $0.05 million for 2025, $0.01 million for 2024 and $(0.01) million for 2023 and is included in salaries and employee benefits expense.

The Company also provides a deferred compensation program for its Board of Directors. Under the plan, each director may elect to defer up to 50% of such director’s cash compensation from retainers and meeting fees for payment by the Company at a subsequent date. Any amount so deferred is credited to the director’s deferred compensation account and converted to units equivalent in value to the fair market value of a share of stock in Hills Bancorporation. The “stock units” are book entry only and do not represent an actual purchase of stock. The director’s account is adjusted each year for dividends paid and the change in the market value of Hills Bancorporation stock. The deferred compensation liability for the directors’ plan is recorded in other liabilities and totaled $4.26 million and $3.69 million at December 31, 2025 and 2024, respectively. Expense (income) related to the directors’ deferred compensation plan was $0.55 million for 2025, $0.36 million for 2024 and $(0.26) million for 2023 and is included in other noninterest expense.

The Company has a Stock Option and Incentive Plan for certain key employees and directors whereby shares of common stock have been reserved for awards in the form of stock options or restricted stock awards. Under the plan, the aggregate number of options and shares granted cannot exceed 250,000 shares. A Stock Option Committee may grant options at prices equal to the fair value of the stock at the date of the grant. Options expire 10 years from the date of the grant. Director options and officers' rights under the plan vest over afive-year period from the date of the grant.

The fair value of each option is estimated as of the date of grant using a Black Scholes option pricing model. The expected lives of options granted incorporate historical employee exercise behavior. The risk-free rate for periods that coincide with the expected life of the options is based on theten year interest rate swap rate as published by the Federal Reserve Bank on the date of issuance. Expected volatility is based on volatility levels of the Company’s peers’ common stock as the Company’s stock has limited trading activity. Expected dividend yield was based on historical dividend rates. Significant assumptions for the options granted in 2024 on May 14, 2024 include the risk-free interest rate of 4.35%, expected option life of 7.5 years, expected volatility of 39% and expected dividends of 1.62%. Significant assumptions for the options granted in 2025 on May 13, 2025 include the risk-free interest rate of 4.29%, expected option life of 7.5 years, expected volatility of 34% and expected dividends of 1.53%.

There were 4,800 and 3,528 shares of stock options granted in 2025 and 2024, respectively. There were 1,935 andzero shares of stock options exercised in 2025 and 2024, respectively. The intrinsic value of options exercised was $0.04 million, $0.00 and $0.00 for 2025, 2024 and 2023, respectively.

A summary of the stock options is as follows:

Other pertinent information related to the options outstanding at December 31, 2025 is as follows:

As of December 31, 2025, the outstanding options have a weighted-average exercise price of $68.85 per share and a weighted average remaining contractual term of 7.19 years. There was $0.19 million in unrecognized compensation cost for stock options granted under the plan as of December 31, 2025. The cost is expected to be recognized over a weighted-average period of 3.40 years. As of December 31, 2025, there were 3,870 vested option shares.

As of December 31, 2025,151,376 shares were available for stock options and awards under the 2020 Stock Option and Incentive Plan (2020 Plan). The 2010 Stock Option and Incentive Plan (2010 Plan) was discontinued upon the approval of the 2020 Plan in April 2020. No stock options or stock awards will be issued from the 2010 Plan after April 2020.

The Compensation and Incentive Stock Committee is also authorized to grant awards of restricted common stock. A summary of the restricted stock award activity for the year ended December 31, 2025 is as follows:

The Company authorized the issuance of 21,213 shares in 2025,20,401 shares in 2024, and 24,393 shares in 2023 to certain employees. The vesting period for these awards isfive years and the Bank amortizes the expense on a straight line basis during the vesting period. The expense relating to these awards for the years ended December 31, 2025, 2024 and 2023 was $0.72 million, $0.99 million and $0.85 million, respectively.9,600,10,000 and 10,800 shares of the restricted common stock shares awarded in December 31, 2025, 2024 and 2023, are subject to forfeiture upon termination of the employee's employment with the Company within eight years of the award.

Note 11. Income Taxes

Income taxes for the years ended December 31, 2025 and 2024 are summarized as follows:

Temporary differences between the amounts reported in the consolidated financial statements and the tax basis of assets and liabilities result in deferred taxes. Deferred tax assets and liabilities at December 31, 2025, 2024, and 2023 were as follows:

The Company has recorded a deferred tax asset for the future tax benefits of Iowa net operating loss carry-forwards. The net operating loss carry-forwards are generated by the Company largely from its investment in tax credit real estate properties. The Company is required to file a separate Iowa tax return and cannot be consolidated with the Bank. The net operating loss carry-forwards will expire, if not utilized, between 2025 and 2043. The Company has recorded a valuation allowance to reduce the deferred tax asset attributable to the net operating loss carry-forwards. At December 31, 2025 and 2024, the Company believes it is more likely than not that the Iowa net operating loss carry-forwards will not be realized. A valuation allowance related to the remaining deferred tax assets has not been provided because management believes it is more likely than not that the results of future operations will generate sufficient taxable income to realize the deferred tax assets. The valuation allowance decreased by $158,000 and and increased by $78,000 for the years ended December 31, 2025 and 2024, respectively.

Income tax expense for the years ended December 31, 2025, 2024, and 2023 are less than the amounts computed by applying the maximum effective federal income tax rate to the income before income taxes because of the following items:

(1)State taxes in Iowa made up the majority (greater than 50 percent) of the tax effect in this category.

The components of income taxes paid for the years ended December 31, 2025, 2024, and 2023were as follows:

Federal income tax expense for the years ended December 31, 2025, 2024, and 2023 was computed using the consolidated effective federal tax rate. The Company also recognized income tax expense pertaining to state franchise taxes payable individually by the subsidiary bank. The Company files a consolidated tax return for federal purposes and separate tax returns for the State of Iowa purposes. The tax years ended December 31, 2025, 2024, 2023, and 2022, remain subject to examination by the Internal Revenue Service. For state tax purposes, the tax years ended December 31, 2025, 2024, 2023, and 2022, remain open for examination. There were no material unrecognized tax benefits at December 31, 2025 and December 31, 2024. No interest or penalties on these unrecognized tax benefits has been recorded. As of December 31, 2025, the Company does not anticipate any significant increase or decrease in unrecognized tax benefits during the twelve month period ending December 31, 2026

Cash paid for income taxes represents amounts paid in cash to taxing authorities during the period. For the year ended December 31, 2025, the Company did not make any cash payments for state income taxes, as state income tax liabilities were satisfied through the utilization of purchased state tax credits. Accordingly, no cash payments for state income taxes are reflected in the cash paid for income taxes disclosure.

On July 4, 2025, the U.S. government enacted significant tax legislation commonly referred to as the One Big Beautiful Bill Act (the “Act”). The Act includes numerous provisions affecting federal income taxation, including extensions and modifications of certain provisions originally enacted under the Tax Cuts and Jobs Act, as well as changes related to depreciation, research and development expenditures, interest deductibility limitations and the phaseout or termination of certain tax credits. In accordance with ASC 740, Income Taxes, the Company evaluated the effects of the Act in the period that included the enactment date. The Company assessed the impact of the Act on its current tax expense, deferred tax assets and liabilities, valuation allowances, and effective tax rate, based on its specific facts and circumstances. The Company determined that the enactment of the Act did not have a material impact on its consolidated financial statements, including its income tax provision, deferred tax balances, or effective tax rate for the year ended December 31, 2025. Accordingly, no material adjustments related to the Act were recorded in the accompanying consolidated financial statements. The Company will continue to monitor future interpretive guidance and administrative developments related to the Act; however, such guidance is not expected to materially affect the Company’s income tax provision.

Note 12. Regulatory Capital Requirements, Restrictions on Subsidiary Dividends and Cash Restrictions

The Company and the Bank are subject to various regulatory capital requirements administered by the federal and state banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory and possibly additional discretionary actions by regulators that, if undertaken, could have a direct material effect on the Company’s financial results. Under capital adequacy guidelines and the regulatory frameworks for prompt corrective action, the Company and the Bank must meet specific capital guidelines that involve quantitative measures of their assets, liabilities and certain off-balance-sheet items as calculated under regulatory accounting practices. Capital amounts and classifications of the Company and the Bank are also subject to qualitative judgments by the regulators about components, risk weightings and other factors. Quantitative measures established by the regulations to ensure capital adequacy require the Company and the Bank to maintain minimum amounts and ratios of capital. The Bank uses the Community Bank Leverage Ratio (CBLR) framework as provided for in the Economic Growth, Regulatory Relief and Consumer Protection Act. Under the CBLR framework, the Bank is required to maintain a CBLR of greater than 9%. Management believes that, as of December 31, 2025 and 2024, the Company and the Bank met all capital adequacy requirements to which they are subject.

The actual amounts and capital ratios as of December 31, 2025 and 2024, with the minimum regulatory requirements for the Company and Bank are presented below (amounts in thousands):

The ability of the Company to pay dividends to its stockholders is dependent upon dividends paid by the Bank. The Bank is subject to certain statutory and regulatory restrictions on the amount it may pay in dividends. To maintain acceptable capital ratios in the Bank, certain of its retained earnings are not available for the payment of dividends. To maintain a ratio of capital to assets of 9.00%, retained earnings of $183.23 million as of December 31, 2025 are available for the payment of dividends to the Company.

Note 13. Related Party Transactions

Certain directors of the Company and the Bank, companies with which the directors are affiliated, and certain principal officers and immediate family members are customers of, and have banking transactions with, the Bank in the ordinary course of business. Such indebtedness has been incurred on substantially the same terms, including interest rates and collateral, as those prevailing at the time for comparable transactions with unrelated persons.

The following is an analysis of the changes in the loans to those the Company has determined to be related parties during the years ended December 31, 2025 and 2024:

Included in the loans to related parties wasone loan on nonaccrual and past due with a balance of $0.05 million and $0.6 million as of December 31, 2025 and 2024.

Deposits from these related parties totaled $28.69 million and $13.51 million as of December 31, 2025 and 2024, respectively. Deposits from related parties are accepted subject to the same interest rates and terms as those from nonrelated parties.

Letters of credit with these related parties totaled $0.07 million and $1.00 million as of December 31, 2025 and 2024, respectively, and were done under the same terms as those with nonrelated parties. There were no amounts drawn related to these letters of credit as of December 31, 2025 and 2024.

Credit cards with these related parties had an outstanding balance of $0.05 million and $0.06 million as of December 31, 2025 and 2024 with a total credit limit of $0.56 million and $0.35 million as of December 31, 2025 and 2024. These related party credit cards were done under the same terms as those with nonrelated parties.

Note 14. Fair Value Measurements

The carrying value and estimated fair values of the Company’s financial instruments as of December 31, 2025 are as follows:

(1)Considered Level 1 under Accounting Standards Codification (“ASC”) Topic 820, Fair Value Measurements and Disclosures (“ASC 820”).

The carrying value and estimated fair values of the Company’s financial instruments as of December 31, 2024 are as follows:

(1)Considered Level 1 under Accounting Standards Codification (“ASC”) Topic 820, Fair Value Measurements and Disclosures (“ASC 820”).

(3)Considered Level 3 under ASC 820 and are based on valuation models that use significant assumptions that are not observable in an active market

Fair value of financial instruments: FASB ASC 820, Fair Value Measurements and Disclosures (“ASC 820”) provides a single definition for fair value, a framework for measuring fair value and expanded disclosures concerning fair value. Fair value is defined under ASC 820 as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date.

The Company determines the fair market value of its financial instruments based on the fair value hierarchy established in ASC 820. There are three levels of inputs that may be used to measure fair value as follows:

It is the Company’s policy to maximize the use of observable inputs and minimize the use of unobservable inputs when developing fair value measurements. The Company is required to use observable inputs, to the extent available, in the fair value estimation process unless that data results from forced liquidations or distressed sales.

The following is a description of valuation methodologies used for assets and liabilities recorded at fair value.

Investment securities available for sale: Investment securities available for sale are recorded at fair value on a recurring basis. Fair value measurement is based upon quoted prices, if available. If a quoted price is not available, the fair value is obtained from benchmarking the security against similar securities. U.S. Treasury securities are considered Level 1 with the remaining securities considered Level 2.

The pricing for investment securities is obtained from an independent source. There are no Level 3 investment securities owned by the Company. The Company obtains an understanding of the independent source’s valuation methodologies used to determine fair value by level of security. The Company validates assigned fair values on a sample basis using an additional third-party provider pricing service to determine if the fair value measurement is reasonable. Due to the nature of our investment portfolio, we do not expect significant and unusual fluctuations as fair value changes primarily relate to interest rate changes. No unusual fluctuations were identified during the year ended December 31, 2025. If a fluctuation requiring investigation was identified, the Company would research the change with the independent source or other available information.

Individually analyzed loans under ASC 326 CECL: See Note 1 for further discussion of individually analyzed loans under CECL.

A loan is considered to be non-performing when it is probable that all of the principal and interest due may not be collected according to its contractual terms. Generally, when a loan is considered non-performing, the amount of reserve is measured based on the fair value of the underlying collateral. The Company makes such measurements on all material loans deemed non-performing using the fair value of the collateral for collateral dependent loans or based on the present value of the estimated future cash flows of interest and principal discounted at the loans effective interest rate or the fair value of the loan if determinable. The fair value of collateral used by the Company is determined by obtaining an observable market price or by obtaining an appraised value from an independent, licensed or certified appraiser, using observable market data. This data includes information such as selling price of similar properties and capitalization rates of similar properties sold within the market, expected future cash flows or earnings of the subject property based on current market expectations, and other relevant factors. All appraised values are adjusted for market-related trends based on the Company's experience in sales and other appraisals of similar property types as well as estimated selling costs. These loans are considered Level 3 as the instruments used to determine fair market value require significant management judgment and estimation.

Foreclosed assets: The Company does not record foreclosed assets at fair value on a recurring basis. Foreclosed assets consist mainly of other real estate owned but may include other types of assets repossessed by the Company. Foreclosed assets are adjusted to the lower of carrying value or fair value less the costs of disposal. Fair value is generally based upon independent market prices or appraised values of the collateral, and may include a marketability discount as deemed necessary by management based on its experience with similar types of real estate. The value of foreclosed assets is evaluated periodically as a nonrecurring fair value adjustment. Foreclosed assets are classified as Level 3.

Off-balance sheet instruments: Fair values for outstanding letters of credit are based on fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreements and the counterparties' credit standing. The fair value of the outstanding letters of credit and unfunded loan commitments are not significant.

Interest Rate Swap Agreements: The fair value is estimated using forward-looking interest rate curves and is calculated using discounted cash flows that are observable or that can be corroborated by observable market data (Level 2).

Assets and Liabilities Recorded at Fair Value on a Recurring Basis

The table below represents the balances of assets and liabilities measured at fair value on a recurring basis:

There were no transfers between Levels 1, 2 or 3 during the years ended December 31, 2025 and 2024.

Assets and Liabilities Recorded at Fair Value on a Nonrecurring Basis

The Company is required to measure certain assets at fair value on a nonrecurring basis in accordance with GAAP. These adjustments to fair value usually result from application of lower-of-cost-or-market accounting or write-downs of individual assets. The valuation methodologies used to measure these fair value adjustments are described above. For assets measured at fair value on a nonrecurring basis that were still held on the balance sheet at December 31, 2025 and 2024, the following tables provide the level of valuation assumptions used to determine the adjustment and the carrying value of the related individual assets at year end.

(4)Represents carrying value and related write-downs of loans for which adjustments are based on the value of the collateral. The carrying value of loans fully charged off is zero.

(5)Represents the fair value and related losses of foreclosed real estate and other collateral owned that were measured at fair value subsequent to their initial classification as foreclosed assets.

(4)Represents carrying value and related write-downs of loans for which adjustments are based on the value of the collateral. The carrying value of loans fully charged off is zero.

(5)Represents the fair value and related losses of foreclosed real estate and other collateral owned that were measured at fair value subsequent to their initial classification as foreclosed assets.

Note 15. Parent Company Only Financial Information

Following is condensed financial information of the Company (parent company only):

CONDENSED BALANCE SHEETS

December 31, 2025 and 2024

CONDENSED STATEMENTS OF INCOME

CONDENSED STATEMENTS OF CASH FLOWS

Note 16. Commitments and Contingencies

Concentrations of credit risk: The Bank’s loans, commitments to extend credit, unused lines of credit and outstanding letters of credit have been granted to customers within the Bank's market area. Investments in securities issued by state and political subdivisions within the state of Iowa had fair value of $162.38 million and $149.47 million for the years ended December 31, 2025 and 2024, respectively. The concentrations of credit by type of loan are set forth in Note 3 to the Consolidated Financial Statements. Outstanding letters of credit were granted primarily to commercial borrowers. Although the Bank has a diversified loan portfolio, a substantial portion of its debtors' ability to honor their contracts is dependent upon the economic conditions in Johnson, Linn and Washington Counties, Iowa.

Contingencies: In the normal course of business, the Company and its subsidiaries are subject to pending and threatened legal actions, some of which seek substantial relief or damages. While the ultimate outcome of such legal proceedings cannot be predicted with certainty, after reviewing pending and threatened litigation with counsel, management believes at this time that the outcome of such litigation will not have a material adverse effect on the Company’s business, financial conditions, or results of operations.

Financial instruments with off-balance sheet risk: The Bank is a party to financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to extend credit, credit card participations and standby letters of credit. These instruments involve, to varying degrees, elements of credit risk in excess of the amount recognized in the consolidated balance sheets.

The Bank’s exposure to credit loss in the event of nonperformance by the other party to the financial instrument for commitments to extend credit, credit card participations and standby letters of credit is represented by the contractual amount of those instruments. The Bank uses the same credit policies in making commitments and conditional obligations as it does for on-balance sheet instruments. A summary of the Bank’s commitments at December 31, 2025 and 2024 is as follows:

Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. The Bank evaluates each customer's credit worthiness on a case-by-case basis. The amount of collateral obtained, if deemed necessary by the Bank upon extension of credit, is based on management's credit evaluation of the party. Collateral held varies, but may include accounts receivable, crops, livestock, inventory, property and equipment, residential real estate and income-producing commercial properties. Credit card commitments are the unused portion of the holders' credit limits. Such amounts represent the maximum amount of additional unsecured borrowings.

Standby letters of credit are conditional commitments issued by the Bank to guarantee the performance of a customer to a third party. Those guarantees are primarily issued to support public and private borrowing arrangements and, generally, have terms of one year or less. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loans to customers. The Bank holds collateral, which may include accounts receivable, inventory, property, equipment, and income-producing properties, supporting those commitments if deemed necessary. In the event the customer does not perform in accordance with the terms of the agreement with the third party, the Bank would be required to fund the commitment. The maximum potential amount of future payments the Bank could be required to make is represented by the contractual amount shown in the summary above. If the commitment is funded the Bank would be entitled to seek recovery from the customer. At December 31, 2025 and 2024, no amounts have been recorded as liabilities for the Bank’s potential obligations under these guarantees.

Lease commitments: The Company leases certain facilities under operating leases. The minimum future rental commitments as of December 31, 2025 for all non-cancellable leases relating to Bank premises were as follows:

Rent expense was$0.33 million, $0.36 million and $0.36 million for the years ended December 31, 2025, 2024 and 2023, respectively.

Note 17. Derivative Financial Instruments

In the normal course of business, the Bank may use derivative financial instruments to manage its interest rate risk. These instruments carry varying degrees of credit, interest rate and market or liquidity risks. Derivative instruments are recognized as either assets or liabilities in the accompanying consolidated financial statements and are measured at fair value. The Bank’s objectives are to add stability to its net interest margin and to manage its exposure to movements in interest rates. The contract or notional amount of a derivative is used to determine, along with the other terms of the derivative, the amount to be exchanged between the counterparties. The Bank is exposed to credit risk in the event of nonperformance by counterparties to financial instruments. The Bank minimizes this risk by entering into derivative contracts with large, stable financial institutions. The Bank has not experienced any losses from nonperformance by counterparties. The Bank monitors counterparty risk in accordance with the provisions of ASC 815. In addition, the Bank’s interest rate-related derivative instruments contain language outlining collateral pledging requirements for each counterparty. Collateral must be posted when the market value exceeds certain threshold limits which are determined by credit ratings of each counterparty. The Bank entered intoone interest rate swap agreement in November 2023 and was required to pledge a US Treasury security in the amount of approximately $0.00 and $250,000 of collateral as of December 31, 2025 and 2024, respectively, due to the agreement expiring on May 15, 2025.

Cash Flow Hedges: The Bank executedone forward-starting interest rate swap transaction on November 28, 2023. The interest rate swap transaction had an effective date of December 15, 2023, and an expiration date of May 15, 2025, effectively converting variable rate debt to fixed rate debt. For accounting purposes, this swap transaction was designated as a cash flow hedge of the changes in cash flows attributable to changes in the effective federal funds rate, the benchmark interest rate being hedged, associated with the interest payments made on an amount of the Bank’s debt principal equal to the then-outstanding swap notional amount. The underlying principal balance was matched to future advances related to a large customer construction project, however, the FHLB advances remained equal to the notional amount of the swap making it probable that sufficient effective federal funds rate based interest payments would exist through the maturity date of the swap.

The table below identifies the balance sheet category and fair value of the Bank’s derivative instrument designated as a cash flow hedge as of December 31, 2025 and 2024:

The table below identifies the losses recognized on the Bank’s derivative instrument designated as cash flow hedges for the years ended December 31, 2025, 2024, and 2023:

Note 18. Segment Reporting

The Company conducts operations throughone reportable segment which is determined by the Senior Executive Committee, which is designated the chief operating decision maker, based upon information provided about the Company's products and services offered, primarily banking operations. The Executive Committee consists of the Chief Executive Officer and Chief Financial Officer. The segment is also distinguished by the level of information provided to the Executive Committee, who uses such information to review performance of various components of the business (such as branches), which are then aggregated if operating performance, products/services, and customers are similar. The Executive Committee will evaluate the financial performance of the Company's business components such as by evaluating revenue streams, significant expenses, and budget to actual results in assessing the Company's segment and in the determination of allocating resources. The Executive Committee uses revenue streams to evaluate product pricing and significant expenses to assess performance and evaluate return on assets. The Executive Committee uses consolidated net income to benchmark the Company against its competitors. The benchmarking analysis coupled with monitoring of budget to actual results are used in assessing performance and in establishing compensation. Loans, investments, and deposits provide the revenues in the banking operation. Interest expense, credit loss expense, and payroll provide the significant expenses in the banking operation. All operations are domestic.

Accounting policies for segments are the same as those described in Note 1. Segment performance is evaluated using consolidated net income from the consolidated statements of income. Significant income and expenses are included on the consolidated statements of income. These include interest income, interest expense, net interest income, and noninterest income. Significant expenses used in evaluating Company performance are credit loss expense and salaries and employee benefits which are included on the consolidated statements of income.

Note 19. Subsequent Events

Subsequent events have been evaluated through March 18, 2026.