Note 1. Summary of Significant Accounting Policies

Nature of operations:

Commercial Bancgroup, Inc. is a bank holding company incorporated in the State of Tennessee whose principal activity is the ownership and management of its wholly owned subsidiary, Commercial Bank. The Bank is primarily engaged in providing a full range of banking and financial products and services to individual and corporate customers in Claiborne, Union, Knox, Sullivan, Washington, Williamson, Cocke and Hamblen Counties in Tennessee, Knox, Bell, Harlan, Laurel and Whitley Counties in Kentucky and Gastonia and Cleveland Counties in North Carolina.

Basis of presentation:

The Company’s accounting and reporting policies conform to accounting principles generally accepted in the United States (“GAAP”) for interim financial information and to generally accepted practices within the banking industry. Accordingly, they do not include all the information and footnotes required by GAAP for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. Operating results for the three month period ended March 31, 2026 are not necessarily indicative of the results that may be expected for the year ending December 31, 2026. For further information, refer to the consolidated financial statements and footnotes thereto in the 2025 Annual Report.

Change in presentation due to stock reclassification and stock split:

In connection with the initial public offering of its common stock, on September 18, 2025, the Company filed with the Tennessee Secretary of State an Amended and Restated Charter providing for (i) the automatic reclassification and conversion of each then outstanding share of the Company’s Class B common stock, $10.00 par value per share into 1.15 shares of common stock, and the automatic reclassification and conversion of each then outstanding share of the Company’s Class C common stock $10.00 par value per share into 1.05 shares of common stock and (ii) effective immediately following this reclassification and conversion, a 250-for-1 forward stock split whereby each holder of common stock received 249 additional shares of common stock for each share owned as of immediately following this reclassification and conversion. All share and per share amounts set forth in the consolidated financial statements of the Company have been retroactively restated to reflect the reclassification and conversion and stock split as if they had occurred as of the earliest period presented.

The Company is authorized to issue 10,000,000 shares of preferred stock, $0.01 par value per share. As of March 31, 2026, no preferred shares have been issued or are outstanding. The Board of Directors of the Company (the “Board of Directors”) has the authority to issue preferred stock in one or more series and to determine the rights, preferences, privileges, and restrictions of each series, including dividend rights, conversion rights, voting rights, terms of redemption, and liquidation preferences. 

Principles of consolidation:

The consolidated financial statements include the accounts of the Company and the Bank. All significant intercompany accounts and transactions have been eliminated in consolidation.

Use of estimates:

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Material estimates that are particularly susceptible to significant change relate to the determination of the allowance for credit losses (“ACL”), valuation of real estate acquired in connection with foreclosures or in satisfaction of loans, valuation of deferred tax assets and fair values of financial instruments.

Loans:

Loans that management has the intent and ability to hold for the foreseeable future or until maturity or payoffs are reported at amortized cost (net of the ACL). Amortized cost is the principal balance outstanding adjusted for unearned income, charge-offs, the ACL, any unamortized deferred fees or costs on originated loans and unamortized premiums or discounts on purchased loans.

Interest receivable reported in interest receivable on the consolidated balance sheets totaled to $6,681,923 and $6,895,763 as of March 31, 2026, and December 31, 2025, respectively and is excluded from the estimate of credit losses. Interest income is accrued based on the unpaid principal balance. Loan origination fees, net of certain direct origination costs, as well as premiums and discounts, are deferred and amortized as a level yield adjustment over the respective term of the loan.

The accrual of interest on mortgage and commercial loans is discontinued and placed on nonaccrual status at the time the loan is 90 days delinquent unless the credit is well-secured and in process of collection. Mortgage loans are charged off at 180 days past due, and commercial loans are charged off to the extent principal or interest is deemed uncollectible. Consumer and credit card loans continue to accrue interest until they are charged off (no later than 120 days past due) unless the loan is in the process of collection. Past due status is based on contractual terms of the loan. In all cases, loans are placed on nonaccrual or charged-off at an earlier date if collection of principal or interest is considered doubtful.

All interest accrued but not collected for loans that are placed on nonaccrual or charged-off is reversed against interest income. The interest on these loans is accounted for on the cash-basis or cost-recovery method, until qualifying for return to accrual. Under the cost-recovery method, interest income is not recognized until the loan balance is reduced to zero. Under the cash-basis method, interest income is recorded when the payment is received in cash. Loans are returned to accrual status when all the principal and interest amounts contractually due are brought current and future payments are reasonably assured.

Purchased Credit Deteriorated (“PCD”) loans:

The Company has purchased loans, some of which have experienced more than insignificant credit deterioration since origination. PCD loans are recorded at the amount paid. An ACL is determined using the same methodology as other loans held for investment. The initial ACL determined on a collective basis is allocated to individual loans. The sum of the loan’s purchase price and ACL becomes its initial amortized cost basis. The difference between initial amortized cost basis and the par value of the loan is a noncredit discount or premium, which is amortized into interest income over the life of the loan. Subsequent changes to the ACL are recorded through credit loss expense.

Allowance for credit losses (ACL) – loans:

Under the current expected credit loss model, the ACL on loans is a valuation allowance estimated at each balance sheet date in accordance with GAAP that is deducted from the loans’ amortized cost basis to present the net amount expected to be collected on the loans.

The Company estimates the ACL on loans based on the underlying loans’ amortized cost basis, which is the amount at which the financing receivable is originated or acquired, adjusted for applicable accretion or amortization of premium, discount, and net deferred fees or costs, collection of cash, and charge-offs. In the event that collection of principal becomes uncertain, the Company has policies in place to reverse accrued interest in a timely manner. Therefore, the Company has made a policy election to exclude accrued interest from the measurement of ACL.

Expected credit losses are reflected in the ACL through a charge to provision for credit losses. The Company measures expected credit losses of loans on a collective (pool) basis, when the loans share similar risk characteristics. Expected credit losses are estimated over the contractual term of the loans, adjusted for expected prepayments when appropriate. The contractual term excludes expected extensions, renewals, and modifications unless the extension or renewal options are included in the original or modified contract at the reporting date and are not unconditionally cancellable by the Company.

The Company’s methodologies for estimating the ACL consider available relevant information about the collectability of cash flows, including information about past events, current conditions, and reasonable and supportable forecasts. The methodologies apply historical loss information, adjusted for asset-specific characteristics, economic conditions at the measurement date, and forecasts about future economic conditions over a period that has been determined to be reasonable and supportable, to the identified pools of loans with similar risk characteristics for which the historical loss experience was observed.

Weighted Average Remaining Maturity (“WARM”) Method:

The Company’s primary methodology for estimating expected credit losses for all loan types is the WARM method. The WARM CECL (Current Expected Credit Losses) methodology uses average annual loss rate along with a simple but reasonable forecast based on a “regression” analysis of the loan history dating back 18 years. The dependent variable will be the entity’s loss rate, based on changes in the Prime Lending Rate over that same period. The Company will utilize the Prime Lending Rate as the independent variable due to that being the tool most commonly utilized by the Board of Governors of the Federal Reserve System (the “Federal Reserve”) to either accelerate and/or slow down the economy. Additionally, the ACL calculation includes qualitative adjustments to account for risk factors that may not be incorporated in the quantitatively derived allowance estimate. Qualitative adjustments may increase or decrease the allowance estimate.

Qualitative factors considered include: changes in lending policies and procedures, underwriting standards, and collection and charge-off and recovery practices; national, regional and local economic and business conditions and developments that affect the collectability of the portfolio, including the condition of various market segments; nature and volume of the portfolio and terms of loans; experience, depth and ability of lending management; volume and severity of past due loans, the volume of non-accrual loans, and the volume and severity of adversely classified or graded loans; quality of loan review system; underlying collateral values; concentrations of credit and changes in the level of such concentrations; and the effect of other external factors such as competition and legal and regulatory requirements.

ACL on Off-Balance Sheet Credit Exposures:

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

Collateral-Dependent Loans:

Loans that do not share risk characteristics are evaluated on an individual basis. For collateral-dependent loans where the Company has determined that foreclosure of the collateral is probable, or where the borrower is experiencing financial difficulty and the Company expects repayment of the loan to be provided substantially through the operation or sale of the collateral, the ACL is measured based on the difference between the fair value of the collateral and the amortized cost basis of the loan as of the measurement date. When repayment is expected to be from the operation of the collateral, expected credit losses are calculated as the amount by which the amortized cost basis of the loan exceeds the present value of expected cash flows from the operation of the collateral. The Company may, in the alternative, measure the expected credit loss as the amount by which the amortized cost basis of the loan exceeds the estimated fair value of the collateral. When repayment is expected to be from the sale of the collateral, expected credit losses are calculated as the amount by which the amortized cost basis of the loan exceeds the fair value of the underlying collateral less estimated cost to sell. The ACL may be zero if the fair value of the collateral at the measurement date exceeds the amortized cost basis of the loan.

Charge-Offs and Recoveries:

Loan losses are charged against the allowance when management believes the collection of a loan’s principal is unlikely. Subsequent recoveries are credited to the allowance. If the loan is collateral-dependent, the loss is more easily identified and is charged-off when it is identified, usually based upon receipt of an appraisal. However, when a loan has guarantor support, and the guarantor demonstrates willingness and capacity to support the debt, the Company may carry the estimated loss as a reserve against the loan while collection efforts with the guarantor are pursued. If, after collection efforts with the guarantor are complete, the deficiency is still considered uncollectible, the loss is charged off and any further collections are treated as recoveries.

Loan commitments and financial instruments:

Financial instruments include off-balance sheet credit instruments, such as commitments to make loans and commercial letters of credit issued to meet customer financing needs. The Company’s exposure to credit loss in the event of nonperformance by the other party to the financial instrument for off-balance sheet loan commitments is represented by the contractual amount of those instruments. Such financial instruments are recorded when they are funded.

The Company records an ACL on off-balance sheet credit exposures, unless the commitments to extend credit are unconditionally cancelable, through a charge to provision for unfunded commitments in the Company’s statements of income. The ACL on off-balance sheet credit exposures is estimated by loan segment at each balance sheet date under the current expected credit loss model using the same methodologies as portfolio loans, taking into consideration the likelihood that funding will occur as well as any third-party guarantees, and is included in other liabilities on the Company’s balance sheets.

Allowance for credit losses (ACL) – securities:

Available-for-sale Securities:

The Company evaluates available-for-sale securities in an unrealized loss position to determine if credit losses exist. The Company first evaluates whether it intends to sell, or it is more likely than not that it will be required to sell a security before recovering its amortized cost basis. If either of these conditions exists, the security’s amortized cost basis is written down to fair value through income. If either of the aforesaid conditions does not exist, the Company evaluates whether the decline in fair value has resulted from credit losses or other factors. In making this assessment, management considers the extent to which fair value is less than amortized cost, any changes to the rating of the security by a rating agency, and adverse conditions specifically related to the security, among other factors. If credit loss exists, the Company recognizes an ACL, limited to the amount by which the amortized cost basis exceeds the fair value. Any impairment not recognized through an ACL is recognized in other comprehensive income, net of tax.

Changes in the ACL are recorded as provision for credit loss expense (or reversal). Losses are charged against the allowance when management believes the collectability of an available-for-sale security is confirmed or when either of the criteria regarding intent or requirement to sell is met.

Held-to-maturity Securities:

Management measures expected credit losses on held-to-maturity debt securities on a collective basis by major security type and any other risk characteristics used to segment the portfolio. Interest receivable on held-to-maturity debt securities totaled $528,655 and $291,460 as of March 31, 2026 and December 31, 2025, respectively.

The estimate of expected credit losses considers historical credit loss information that is adjusted for current conditions and reasonable and supportable forecasts.

Securities borrowed or purchased under agreements to resell, and securities loaned or sold under agreements to repurchase are treated as collateralized financial transactions. These agreements are recorded at the amount at which the securities were acquired or sold plus accrued interest. It is the Company’s policy to take possession of securities purchased under resale agreements. The market value of these securities is monitored, and additional securities are obtained when deemed appropriate to ensure such transactions are adequately collateralized. The Company also monitors its exposure with respect to securities sold under repurchase agreements, and a request for the return of excess securities held by the counterparty is made when deemed appropriate.