Marathon Bancorp Inc MD

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Note 1-** Basis of Presentation**

Marathon Bancorp, Inc. (the “Company”) is a Maryland chartered mid-tier stock holding company and was formed in connection with the conversion of Marathon Bank (the “Bank”) from a mutual to the mutual holding company form of organization in April 2021, and it is a subsidiary of Marathon MHC (the “Mutual Holding Company”), a Wisconsin chartered mutual holding company. The Mutual Holding Company received 1,226,223 shares, or 55.0%, of the Company’s issued stock at the time of the reorganization. In connection with the reorganization, Marathon Bancorp, Inc. sold 1,003,274 shares of common stock to the public at $10.00 per share, representing 45.0% of its outstanding shares of common stock at the time of the reorganization. The stock offering resulted in gross proceeds of $10.0 million, net of offering expenses of $1.4 million, resulting in net proceeds of $8.5 million. The Mutual Holding Company activity is not included in the accompanying consolidated financial statements. Marathon Bank is a wholly owned subsidiary of the Company. The same directors and officers, who manage the Bank, also manage the Company and the Mutual Holding Company.

The Bank is a Wisconsin stock savings bank, which conducts its business through four facilities. We opened a new branch in Brookfield, Wisconsin on January 22, 2024. The Bank operates as a full-service financial institution with a primary market area including, but not limited to, Marathon County and Ozaukee County, Wisconsin. Its primary deposit products are demand deposits, savings, and certificates of deposit; and its primary lending products are commercial real estate, commercial and industrial, construction, one-to-four-family residential, multi-family real estate and consumer loans. In addition, the Bank has two nonbank subsidiaries for the purpose of temporarily holding a foreclosed property pending the liquidation of this property and to hold the real estate of its recently opened branch in Brookfield, Wisconsin.

The accompanying unaudited financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) for interim financial information. Accordingly, they do not include all of the information and footnotes required by U.S. GAAP for complete financial statements. The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts in the financial statements and accompanying notes. Actual results may differ from those estimates, and such differences could be material to the financial statements. Material estimates that are particularly susceptible to significant changes in the near term relate to the determination of the allowance for credit losses, valuation of deferred tax assets, and fair value of financial assets and liabilities.

In the opinion of management, all adjustments considered necessary for fair presentation have been included. Operating results for the three and nine month periods ended March 31, 2024 are not necessarily indicative of the results for the year ending June 30, 2024 or any other period. For further information, refer to the consolidated financial statements and notes thereto for the years ended June 30, 2023 and 2022 contained in the Company’s Annual Report on Form 10-K as filed with the Securities and Exchange Commission on September 20, 2023.

Recent Accounting Pronouncements

This section provides a summary description of recent ASUs issued by the FASB to the ASC that had or that management expects may have an impact on the consolidated financial statements issued upon adoption. The Company is classified as an emerging growth company and has elected to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. Effective dates reflect this election.

Recently Issued, But Not Yet Effective Accounting Pronouncements

In December 2023, the Financial Accounting Standards Board (FASB) issued ASU 2023-09, “Income Taxes (Topic 740): Improvements to Income Tax Disclosures.” The amendments in this ASU require an entity to disclose specific

categories in the rate reconciliation and provide additional information for reconciling items that meet a quantitative threshold, which is greater than five percent of the amount computed by multiplying pretax income by the entity’s applicable statutory rate, on an annual basis. Additionally, the amendments in this ASU require an entity to disclose the amount of income taxes paid (net of refunds received) disaggregated by federal, state, and foreign taxes and the amount of income taxes paid (net of refunds received) disaggregated by individual jurisdictions that are equal to or greater than five percent of total income taxes paid (net of refunds received). Lastly, the amendments in this ASU require an entity to disclose income (or loss) from continuing operations before income tax expense (or benefit) disaggregated between domestic and foreign and income tax expense (or benefit) from continuing operations disaggregated by federal, state, and foreign. This ASU is effective for annual periods beginning after December 15, 2024. Early adoption is permitted. The amendments should be applied on a prospective basis; however, retrospective application is permitted. The Company does not expect the adoption of ASU 2023-09 to have a material impact on its consolidated financial statements.

Recently Adopted Accounting Pronouncements

In June 2016, the Financial Accounting Standards Board (FASB) issued ASU 2016-13, “Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments (“CECL”).” The ASU, as amended, requires an entity to measure expected credit losses for financial assets carried at amortized cost based on historical experience, current conditions, and reasonable and supportable forecasts. Among other things, the ASU also amended the impairment model for available for sale securities and addressed purchased financial assets with deterioration. ASU 2016-13 was effective for the Company on July 1, 2023. The adjustment recorded at adoption reduced the allowance for credit losses (“ACL”) by $175,000, net of deferred taxes of $36,750 and resulted in the establishment of a reserve for unfunded loan commitments of $6,702, net of deferred taxes of $1,827. These adjustments, net of tax, increased the opening balance of retained earnings of the Company and the Bank by $133,375 as of the date of adoption.

In March 2022, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2022-02, “Financial Instruments-Credit Losses (Topic 326), Troubled Debt Restructurings and Vintage Disclosures.” ASU 2022-02 addresses areas identified by the FASB as part of its post-implementation review of the credit losses standard (ASU 2016-13) that introduced the CECL model. The amendments eliminate the accounting guidance for troubled debt restructurings by creditors that have adopted the CECL model and enhance the disclosure requirements for loan refinancings and restructurings made with borrowers experiencing financial difficulty. In addition, the amendments require a public business entity to disclose current-period gross write-offs for financing receivables and net investment in leases by year of origination in the vintage disclosures. The amendments in this ASU should be applied prospectively, except for the transition method related to the recognition and measurement of a Troubled Debt Restructuring-(“TDRs”), an entity has the option to apply a modified retrospective transition method, resulting in a cumulative-effect adjustment to retained earnings in the period of adoption. ASU 2022-02 was effective for the Company on July 1, 2023. There was no material impact to the Company at adoption.

The following table illustrates the impact of adopting ASC 326 (in thousands):

The following accounting policies have been updated in connection with the adoption of ASC 326 and apply to periods beginning after June 30, 2023. Accounting policies applying to prior periods are described in the 2023 Annual Report.

Allowance for Credit Losses on Loans. The allowance for credit losses on loans is established through charges to earnings in the form of a provision for credit losses. Loan losses are charged against the allowance for credit losses for the difference between the carrying value of the loan and the estimated net realizable value or fair value of the collateral, if collateral dependent, when management believes that the collectability of the principal is unlikely. Subsequent recoveries, if any, are credited to the allowance.

The allowance represents management’s current estimate of expected credit losses over the contractual term of loans, and is recorded at an amount that, in management’s judgment, reduces the recorded investment in loans to the net amount expected to be collected. Noallowance for credit loss is recorded on accrued interest receivable and amounts written-off are reversed by an adjustment to interest income. Management’s judgment in determining the level of the allowance is based on evaluations of historical loan losses, current conditions and reasonable and supportable forecasts relevant to the collectability of loans. Loans that share common risk characteristics are evaluated collectively using a weighted-average remaining maturity methodology. The weighted-average remaining maturity methodology uses an average annual charge-off rate as a foundation for estimating the credit loss for the remaining balances of all loan pools. The average annual charge-off rate is applied to the contractual term, further adjusted for estimated prepayments to determine the unadjusted historical charge-off rate.

Management’s estimate of the allowance for credit losses on loans that are collectively evaluated also includes a qualitative assessment of available information relevant to assessing collectability that is not captured in the loss estimation process. This includes forecast that are reasonable and supportable concerning expectations of future economic conditions. The reasonable and supportable forecast period is 24 months. This evaluation is inherently subjective, as it requires estimates that are susceptible to significant revision as more information becomes available.

These qualitative risk factors include:

Each factor is assigned a value to reflect improving, stable or declining conditions based on management’s best judgment using relevant information available at the time of the evaluation. Adjustments to the factors are supported through documentation of changes in conditions in a narrative accompanying the allowance for credit losses calculation for our loan portfolio.

The evaluation also considers the following risk characteristics of each loan portfolio segment:

Loans that do not share common risk characteristics with other loans are evaluated individually and are not included in the collective analysis. The allowance for credit losses on loans that are individually evaluated may be estimated based on their expected cash flows, or, in the case of loans for which repayment is expected substantially through the operation or sale of collateral when the borrower is experiencing financial difficulty, may be measured based on the fair value of the collateral less estimated costs to sell.

Allowance for Credit Losses on Unfunded Commitments. The Company records an allowance, reported in other liabilities, for expected credit losses on commitments to extend credit that are not unconditionally cancelable by the Company. The allowance for unfunded commitments is measured based on the principles utilized in estimating the allowance for credit losses on loans and an estimate of the amount of unfunded commitments expected to be advanced. Changes in the allowance for unfunded commitments are recorded through the provision for credit losses.

Allowance for Credit Losses on Available for Sale (“AFS”) Securities.* *Prior to implementation of CECL, unrealized losses on AFS debt securities caused by a credit event would require the direct write-down of the AFS security through the other-than-temporary impairment approach; however, the new standard requires credit losses to be presented as an ACL. The Company is still required to conduct an impairment evaluation on AFS securities to determine whether the Company has the intent to sell the security or it is more likely than not that it will be required to sell the security before recovery. If these situations apply, the guidance continues to require the Company to reduce the security's amortized cost basis down to its fair value through earnings. The Company also evaluates the unrealized losses on AFS securities to determine if a security's decline in fair value below its amortized cost basis is due to credit factors. The evaluation is based upon factors such as the creditworthiness of the underlying borrowers, performance of the underlying collateral, if applicable, and the level of credit support in the security structure. Management also evaluates other factors and circumstances that may be indicative of a decline in the fair value of the security due to a credit factor. This includes, but is not limited to, the extent to which fair value is less than amortized cost, the current interest rate environment, changes to rating of security or security issuer, and adverse conditions specifically related to the security among other factors. If this assessment indicates that a credit loss exists, the present value of the expected cash flows of the security is compared to the amortized cost basis of the security. If the present value of the cash flows expected to be collected is less than the amortized cost, an ACL is recorded for the credit loss, limited by the amount that the fair value is less than the amortized cost basis under the CECL standard, and declines due to non-credit factors are recorded in AOCI, net of taxes. If a credit loss is recognized in earnings, subsequent improvements to the expectation of

collectability will be recognized through the ACL. If the fair value of the security increases above its amortized cost, the unrealized gain will be recorded in accumulated other comprehensive income (“AOCI”), net of taxes, on the unaudited consolidated balance sheets. Accrued interest receivable on AFS securities is excluded from the estimate of credit losses. The Company did not record a cumulative-effect adjustment related to its AFS securities upon adoption of CECL on July 1, 2023.* *See Note 3, Debt Securities, to the unaudited consolidated financial statements under Part I, Item 1, "Financial Information," for a description of the Company’s investment securities and impairment evaluation.

Allowance for Credit Losses on Held to Maturity (“HTM”) Securities. The Company’s portfolio of held to maturity securities consists of U.S. agency residential mortgage-backed securities which are highly rated by major rating agencies and have a long history of no credit losses. In estimating the net amount expected to be collected for held to maturity securities in an unrealized loss position, a historical loss based method is utilized.

Note 2- Earnings (Loss) Per Share

Basic net income (loss) per common share is calculated by dividing net income by the weighted-average number of common shares outstanding during the period. Unallocated common shares held by the ESOP are not included in the weighted-average number of common shares outstanding for purposes of calculating earnings per common share until they are committed to be released. Diluted earnings (loss) per share is adjusted for the dilutive effects of stock based compensation and is calculated using the treasury stock method. Set forth below is the calculation of earnings (loss) per share.

Note 3-** Debt Securities**

Debt securities have been classified in the consolidated balance sheet according to management’s intent. The carrying value of securities as of March 31, 2024 and June 30, 2023, consists of the following:

The amortized cost and fair value of debt securities, with gross unrealized gains and losses, are as follows:

There is no allowance for credit losses on available for sale and held to maturity debt securities at March 31, 2024. Securities with a carrying value of approximately $268,000 and $415,000 as of March 31, 2024 and June 30, 2023, respectively, were pledged to secure public deposits and debt.

The amortized cost and fair value of debt securities by contractual maturity at March 31, 2024, follows:

There wereno sales of available for sale debt securities during the three and nine month periods ended March 31, 2024 and 2023. The Company did recognize a gain of$24,000 on bonds that matured during the nine months ended March 31, 2023 related to previous other than temporary impairment charges taken on these securities.

The following table shows the gross unrealized losses and fair value of the Company’s securities for which an allowance for credit losses has not been recorded, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position at March 31, 2024 and June 30, 2023:

There were five securities in an unrealized loss position in the less than 12 months category and 55 securities in the 12 months or more category at March 31, 2024. There were 15 securities in an unrealized loss position in the less than 12 months category and 52 securities in the 12 months or more category at June 30, 2023. Unrealized losses have not been recognized into income because the decline in fair value is largely due to changes in interest rates and other market conditions. The contractual terms of the securities do not permit the issuer to settle the securities at a price less than the amortized cost basis of the investment. The Company does not intend to sell the securities and it is not more likely than not that the Company will be required to sell the securities before recovery of their amortized cost bases, which may be maturity. Mortgage-backed securities held to maturity are backed by pools of mortgages that are insured or guaranteed by the Federal Home Mortgage Corporation. It is expected that the securities will not be settled at prices less than the amortized cost bases of the securities. Accordingly, no allowance for credit losses has been recorded.

Note 4-** Loans**

On July 1, 2023, the Company adopted ASC 326. The measurement of expected credit losses under the CECL methodology is applicable to financial assets measured at amortized cost, including loan receivables. All loan information presented as of March 31, 2024 is in accordance with ASC 326. All loan information presented as of June 30, 2023 or a prior date is presented in accordance with previously applicable GAAP (incurred loss method).

The Company’s loans are stated at their face amount, net of deferred fees and costs and discounts, and consist of the classes of loans included in the table below. The Company has elected to exclude accrued interest receivable, totaling $543,137 at March 31, 2024, from the amortized cost basis of loans.

A summary of loans by major category follows:

The following table summarizes the activity in the allowance for credit losses - loans by loan class for thethree and nine months ended March 31, 2024:

The following table summarizes the activity in the allowance for credit losses - loans by loan class for thethree and nine months ended March 31, 2023:

The following table presents the balance in the allowance for loan losses and the recorded investment in loans by portfolio segment based on impairment method as of June 30, 2023:

The following table presents a breakdown of the provision for (recovery of) credit losses for the periods indicated:

Credit Quality Indicators

The Company categorizes loans into risk categories based on relevant information about the ability of borrowers to service their debt such as: current financial information, historical payment experience, collateral adequacy, credit documentation, public information, and current economic trends, among other factors. The Company analyzes loans individually by classifying the loans as to credit risk. This analysis typically includes larger, non-homogeneous loans such as commercial and industrial and commercial real estate loans. This analysis is performed on an ongoing basis as new information is obtained. The Company uses the following definitions for risk ratings:

Pass – Loans classified as pass represent loans that are evaluated and are performing under the stated terms. Pass rated assets are analyzed by the paying capacity, the current net worth, and the value of the loan collateral of the obligor.

Special Mention/Watch – Loans classified as watch possess potential weaknesses that require management attention but do not yet warrant adverse classification. While the status of a loan put on this list may not technically trigger their classification as substandard or doubtful, it is considered a proactive way to identify potential issues and address them before the situation deteriorates further and does result in a loss for the Company.

Substandard – Loans classified as substandard are inadequately protected by the current net worth, paying capacity of the obligor, or by the collateral pledged. Substandard loans must have a well-defined weakness or weaknesses that jeopardize the repayment of the debt as originally contracted. They are characterized by the distinct possibility that the Company will sustain a loss if the deficiencies are not corrected.

Doubtful – Loans classified as doubtful have the weaknesses of those classified as substandard, with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of currently existing facts, conditions, and values, highly questionable and improbable. Loans in this category are individually evaluated for impairment or charged-off if deemed uncollectible.

Residential real estate, multi-family real estate and consumer loans are managed on a pool basis due to their homogeneous nature. Loans that are 90 days or more delinquent or are not accruing interest are considered nonperforming.

The following table presents the classes of the loan portfolio summarized by the aggregate pass rating and the classified ratings of special mention, substandard and doubtful within the Company’s internal risk rating system as of March 31, 2024 based on year of origination:

The risk category of loans by class of loans as of June 30, 2023, is as follows:

Residential real estate, multi-family real estate and consumer loans are managed on a pool basis due to their homogeneous nature. Loans that are 90 days or more delinquent or are not accruing interest are considered nonperforming. The following table presents the recorded investments in residential real estate, multi-family real estate and consumer loans by class based on payment activity as of June 30, 2023:

The following tables summarize the aging of the past due loans by loan class within the portfolio segments as of March 31, 2024 and June 30, 2023:

There wasone loan on nonaccrual status as of March 31, 2024 andnone at June 30, 2023. The multi-family real estate loan for $56,000 was returned to accrual status in April 2024 upon renewal of the matured loan.

Set forth below is a summary of the amortized cost basis of loans on nonaccrual status and loans past due over 90 days and still accruing interest as of March 31, 2024.

Impaired Loans

A loan was considered impaired when based on current information and events, it is probable that the Bank will be unable to collect all amounts due from the borrower in accordance with the contractual terms of the loan.

The following tables summarize individually impaired loans by class of loans as of June 30, 2023 and for the year then ended:

(1) Represents the borrower's loan obligation, gross of any previously charged-off amounts.

The Company’s July 1, 2023 adoption of ASU 2022-02 eliminates the recognition and measurement of TDRs. Upon adoption of this guidance, the Company will no longer recognize an allowance for credit losses for the economic concession granted to a borrower for changes in the timing and amount of contractual cash flows when a loan is restructured. The adoption of ASU 2022-02 results in a change to reporting for loan modifications to borrowers experiencing financial difficulties. With the adoption of ASU 2022-02 these modifications require enhanced reporting on the type of modifications granted and the financial magnitude of the concessions granted. When the Company modifies a loan with financial difficulty, such modifications generally include one or a combination of the following: an extension

of the maturity date at a stated rate of interest lower than the current market rate for new debt with similar risk; a change in scheduled payment amount; or principal forgiveness.

There wereno loans during the three and nine months ended March 31, 2024 that were modified to borrowers experiencing financial difficulty since the adoption of ASU 2022-02 effective July 1, 2023.

There wereno loans modified as TDRs during the three and nine months ended March 31, 2023.

The Company maintains a collateral pledge agreement with the FHLB covering secured advances whereby the Company has agreed to retain, free of all other pledges, liens, and encumbrances, commercial and industrial, commercial real estate, and one-to-four family residential and multi-family real estate loans. The pledged loans are discounted at a factor of 24% to 38% when aggregating the amount of loans required by the pledge agreement. The amount of eligible collateral was $92,916,601 and $95,988,835 as of March 31, 2024 and June 30, 2023, respectively. There was also FHLB stock of $1,329,413 and $770,273 pledged as of March 31, 2024 and June 30, 2023.

Note 5 - Leases

Lease liabilities represent the Company’s obligation to make lease payments and are presented at each reporting date as the net present value of the remaining contractual cash flows. Cash flows are discounted at the Company’s incremental borrowing rate in effect at the commencement date of the lease. Right-of-use assets represent the Company’s right to use the underlying asset for the lease term and are calculated as the sum of the lease liability and if applicable prepaid rent, initial direct costs and any incentives received from the lessor.

The Company’s long-term lease agreements are classified as operating leases. Certain of these leases offer the option to extend the lease term and the Company has included such extensions in its calculation of the lease liabilities to the extent the options are reasonably assured of being exercised. The lease agreements do not provide for residual value guarantees and have no restrictions or covenants that would impact dividends or require incurring additional financial obligations.

The following tables present information about the Company’s leases as of and for the three and nine months ended March 31, 2024 and 2023 and June 30, 2023:

Note 6 - Foreclosed Assets

Real estate owned activity was as follows:

Activity in the valuation allowance is as follows:

Expenses related to foreclosed assets include:

During the three months ended June 30, 2023, the Company foreclosed on collateral supporting a construction loan which was valued at$2.3 million and was included in foreclosed assets (OREO), net. The valuation was based on independent appraisals subject to certain discounts less estimated costs to sell. A subsequent independent appraisal was obtained in April 2024 resulting in a new valuation of$2.1 million subject to certain discounts less estimated costs to sell. After adjusting for estimated costs to sell, the revised valuation was$1.4 million resulting in a provision for valuation allowance of$937,000 being recorded during the three and nine months ended March 31, 2024. The Bank is pursuing legal remedies against the previous owner of the property.

Note 7**- Deposits**

Major classifications of deposits are as follows as of March 31, 2024 and June 30, 2023. Brokered deposits totaled $13.4 million and $22.2 million at March 31, 2024 and June 30, 2023, respectively.

Note 8- Borrowings

There was $23.0 million in borrowings from the Federal Home Loan Bank of Chicago (FHLB) as of March 31, 2024 consisting of a $3.0 million 6 month term advance maturing August 21, 2024 andfour - $5.0 million 5-year term callable putable advances with maturity dates ranging from August 2028 through December 2028 which have call dates ranging from May 2024 through September 2024. These putable advances can be called quarterly until maturity at the option of the FHLB. If any advance is terminated requiring repayment prior to stated maturity, the FHLB will offer replacement funding at the then-prevailing rate of interest for an advance product then offered by the FHLB, subject to normal FHLB credit and collateral requirements.

There was $8.0 million in borrowings from the Federal Home Loan Bank of Chicago (FHLB) as of June 30, 2023 consisting of $5.0 million and $3.0 million putable advances. The $5.0 million putable advance with the maturity date of March 17, 2028 can be called quarterly until maturity at the option of the FHLB, with the next call option being September 18, 2023. The $3 million putable advance with the maturity date of April 11, 2028 can be called quarterly until maturity at the option of the FHLB, with the next call option being October 11, 2023. If any advance is terminated requiring repayment prior to stated maturity, the FHLB will offer replacement funding at the then-prevailing rate of interest for an advance product then offered by the FHLB, subject to normal FHLB credit and collateral requirements.

The Company maintains a collateral pledge agreement with the FHLB covering secured advances whereby the Company has agreed to retain, free of all other pledges, liens, and encumbrances, commercial, commercial real estate, and residential loans. The advances reprice daily at market rates. The pledged loans are discounted at a factor of 22% to 37% when aggregating the amount of loans required by the pledge agreement. The amount of eligible collateral was $92,916,601 and $95,988,835 as of March 31, 2024 and June 30, 2023, respectively. There was FHLB stock of $1,329,413 and $770,273 pledged as of March 31, 2024 and June 30, 2023, respectively. The Bank also has $25.0 million available to borrow from the Federal Reserve Bank when pledging acceptable assets and an unsecured Federal Funds purchasing limit of $5.0 million with the Bank’s correspondent bank. There wereno borrowings under these arrangements at March 31, 2024 and June 30, 2023. The Company also has a federal funds purchased borrowing arrangement with a correspondent bank for $5.0 million which reprices daily based on the Federal Funds rate. There wereno borrowings under this arrangement at March 31, 2024 and June 30, 2023.

Note 9- Other Comprehensive Income (Loss)

The changes in accumulated other comprehensive income (loss) by component for the three and nine months ended March 31, 2024 and 2023, follows:

Note 10- Provision for (Benefit from) Income Taxes

Income tax benefit was $31,000 for the nine months ended March 31, 2024, a decrease of $297,000, as compared to income tax expense of $266,000 for the nine months ended March 31, 2023. The decrease in income tax expense was primarily the result of a decrease in income (loss) before income taxes of $1.3 million which was offset by a change in Wisconsin tax law that provides for a subtraction from the Bank’s state taxable income for loan and fee interest income from certain commercial and agricultural loans. Based upon the provisions of this new state tax law, management determined that the Company was highly unlikely to incur a material Wisconsin tax liability in the foreseeable future, instead generating Wisconsin net operating loss carryforwards that would never be realized. Since the state rate at which net deferred tax assets are expected to be realized is 0%, the Company eliminated its state net deferred tax asset balances as of July 1, 2023, resulting in deferred tax expense of approximately $112,000 for the nine months ended March 31, 2024. A summary of income tax expense (benefit) compared to the federal income tax statutory rate is set forth below.

Note 11-** Minimum Regulatory Capital Requirements**

Bank regulatory authorities in the United States issue risk-based capital standards. These capital standards relate a banking company’s capital to the risk profile of its assets and provide the basis by which all banking companies and banks are evaluated in terms of capital adequacy.

The risk-based capital standards require financial institutions to maintain: (a) a minimum ratio of common equity tier 1 (“CET1”) to risk weighted assets of at least 4.5%, (b) a minimum ratio of tier 1 capital to risk-weighted assets of at least 6.0%; (c) a minimum ratio of total (that is, tier 1 plus tier 2) capital to risk-weighted assets of at least 8.0%; and (d) a minimum leverage ratio of 3.0%, calculated as the ratio of tier 1 capital balance sheet exposures plus certain off-balance sheet exposures (computed as the average for each quarter of the month-end ratios for the quarter). In addition, the rules also limit a banking organization’s capital distributions and certain discretionary bonus payments if the banking organization does not hold a “capital conservation buffer” of 2.5% above the minimum standards stated in (a) - (c) above.

In September 2019, the FDIC finalized a rule to simplify the capital calculation for qualifying community banking organizations (i.e., the community bank leverage ratio (“CBLR”)), as required by the Economic Growth, Regulatory Relief and Consumer Protection Act. The CBLR framework is designed to reduce burden by removing the requirements for calculating and reporting risk-based capital ratios for qualifying community banking organizations that opt into the framework. A qualifying community bank may elect to utilize the CBLR in lieu of the general capital requirements and will be considered well capitalized if it exceeds the minimum CBLR of 9.0%. The CBLR framework also provides a two-quarter grace period for qualifying banks whose leverage ratio falls no more than 1.00% below the required ratio for that reporting quarter. The Bank opted into the CBLR framework as of March 31, 2024 and June 30, 2023.

As of March 31, 2024 and June 30, 2023, management believes the Bank has met all capital adequacy requirements to which it is subject. As of March 31, 2024 and June 30, 2023, the most recent notification from the FDIC categorized the Bank as well capitalized under the regulatory framework for prompt corrective action. There are no conditions or events since the notification that management believes have changed the Bank’s category.

The Bank’s actual capital amounts and ratios are presented in the following table (dollars in thousands):

A Wisconsin state-chartered savings bank is required by state law to maintain minimum net worth, as defined, in an amount equal to at least 6.0% of its total assets. At March 31, 2024, the Bank’s net worth was $28,777,334 and general loan loss reserve was $1,769,585 totaling 13.42% of total assets, which meets the state of Wisconsin’s minimum net worth requirements. At June 30, 2023, the Bank’s net worth was $28,246,139 and general loan loss reserve was $2,158,590, totaling 12.67% of total assets, which meets the state of Wisconsin’s minimum net worth requirements.

Note 12 - Employee Benefit Plans

The Company provides a 401(k) salary deferral plan to substantially all employees. Employees are allowed to make voluntary contributions to the plan up to 15% of their compensation. In addition, the Company provides discretionary matching and profit-sharing contributions as well as a safe harbor contribution.

Effective upon the completion of the Company’s initial public stock offering in April 2021, the Company established an Employee Stock Ownership Plan (“ESOP”) for all eligible employees. The ESOP used $873,970 in proceeds from a term loan obtained from the Company to purchase 87,397 shares of common stock in the initial public offering at a price of $10.00 per share. The ESOP loan will be repaid principally from the Company’s contribution to the ESOP in annual payments through 2045 at a fixed interest rate per annum at 3.25%. Shares are released to participants on a straight-line basis over the loan term and allocated based on participant compensation. The Company recognizes compensation benefit expense as shares are committed for release at their current market price. The difference between the market price and the cost of shares committed to be released is recorded as an adjustment to additional paid-in capital. Dividends on allocated shares, if applicable, are recorded as a reduction of retained earnings and dividends on unallocated shares are recorded as a reduction of debt. The Company recognized $23,418 (upon the release of 2,622 shares) and $29,639 (upon the release of 2,622 shares) of compensation expense related to this plan for the nine months ended March 31, 2024 and 2023, respectively. At March 31, 2024, there were 76,035 shares not yet released having an aggregate market value of approximately $729,176. Participants will become fully vested upon completion ofthree years of credited service. Eligible employees who were employed with the Company shall receive credit for vesting purposes for each year of continuous employment prior to adoption of the ESOP.

Note 13 - Stock Based Compensation

On May 24, 2022, the stockholders of Marathon Bancorp, Inc. approved the Company’s 2022 Equity Incentive Plan (the “Plan”), which provides for the grant of stock-based awards to officers, employees and directors of the Company and Marathon Bank. Under provisions of the Plan, while active, awards may consist of grants of incentive stock options, nonqualified stock options, restricted stock and restricted stock units. Stock options totaling 109,245 and restricted stock awards totaling 43,698 were authorized for award under the Plan.

Stock Options

On June 28, 2022, a total of 73,194 stock option awards were granted to the Bank’s directors, executive officers, senior officers and other officers (18,572 and 54,622 options were awarded to directors and employees, respectively). Director awards are considered non-qualified stock options while employee awards are considered incentive stock options. During the year ended June 30, 2023, a director and employee retired resulting in the forfeiture of 7,647 options. The awards vest ratably over five years (20% per year for each year of the participant’s service with the Company) and will expireten years from the date of the grant, or June 2032. The fair value of each option grant was established at the date of grant using the Black-Scholes option pricing model. The Black-Scholes model used the following weighted average assumptions: risk-free interest rate of 3.27%; volatility factors of the expected market price of the Company's common stock of 20.76%; weighted average expected lives of the options of 6.5 years; cash dividend yield of 0%. Based upon these assumptions, the weighted average fair value of options granted was $3.33.

On May 16, 2023, a total of 39,330 stock option awards were granted to the Bank’s directors, executive officers, senior officers and other officers (4,368 and 34,962 options were awarded to directors and employees, respectively). The fair value of each option grant was established at the date of grant using the Black-Scholes option pricing model. The Black-Scholes model used the following weighted average assumptions: risk-free interest rate of 3.53%; volatility factors of the expected market price of the Company's common stock of 20.71%; weighted average expected lives of the options of 6.5 years; cash dividend yield of 0%. Based upon these assumptions, the weighted average fair value of options granted was $2.72.

Stock option expense amortized to expense for the nine months ended March 31, 2024 and 2023 was$48,787 and $32,741, respectively. At March 31, 2024, total unrecognized compensation expense related to stock options was

$229,242, and will be amortized to expense over a period of 3.75 years. As of March 31, 2024, there were 4,368 stock option awards available for future awards under this plan.

The aggregate intrinsic value of a stock option represents the total pre-tax intrinsic value (the amount by which the current market value of the underlying stock exceeds the exercise price of the option) that would have been received by the option holders had all option holders exercised their options prior to the expiration date. The intrinsic value can change based on fluctuations in the market value of the Company’s stock.

A summary of stock option activity and related information for the three and nine months ended March 31, 2024 was as follows.

Restricted Stock

On June 28, 2022, a total of 40,203 restricted stock awards were granted to the Bank’s directors, executive officers, senior officers and other officers under the Plan (9,614 and 30,589 shares were granted to directors and employees, respectively). On May 16, 2023, a total of 6,261 restricted stock awards were granted to the Bank’s directors, executive officers, senior officers and other officers under the Plan (1,311 and 4,950 shares were granted to directors and employees, respectively). During the year ended June 30, 2023, a director and employee retired resulting in the forfeiture of 3,059 restricted stock awards. The restricted stock awards vest ratably over five years (20% per year for each year of the participant’s service with the Company). Restricted stock expense was $70,538 and $62,179 for the nine months ended March 31, 2024 and 2023, respectively. At March 31, 2024, future compensation expense related to non-vested restricted stock outstanding was $314,950 which will be amortized over a remaining period of 3.75 years. As of March 31, 2024, there were 293 shares of restricted stock available for issuance.

A summary of restricted stock activity and related information for the three and nine months ended March 31, 2024, is as follows:

Note 14-** Commitments and Contingencies**

The Company is a party to credit-related 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. Such commitments involve, to varying degrees, elements of credit and interest rate risk in excess of the amount recognized in the balance sheet. The Company’s exposure to credit loss is represented by the contractual amount of these commitments. The Company uses the same credit policies in making commitments as it does for on-balance-sheet instruments.

As of March 31, 2024 and June 30, 2023, the following financial instruments were outstanding where contract amounts represent credit risk:

Commitments to grant loans are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. The commitments for equity lines of credit may expire without being drawn upon. Therefore, the total commitment amounts do not necessarily represent future cash requirements. The amount of collateral obtained, if it is deemed necessary by the Company, is based on management’s credit evaluation of the customer.

Mortgage Partnership Finance (MPF) credit enhancements allow the Company to share the credit risk associated with home mortgage finance with Federal Home Loan Bank (FHLB). MPF provides the Company the ability to originate, sell, and service fixed-rate, residential mortgage loans, and receive a Credit Enhancement Fee based on the performance of the loans. FHLB manages the liquidity, interest rate, and prepayment risks of the loans while the Company manages the credit risk of the loans. The Company will incur an obligation on a foreclosure loss only after a foreclosure loss exceeds the borrower’s equity, any private mortgage insurance, and the funded first loss account. Based on the delinquency results for states where properties are located and the Company’s historical loss experience, the estimated foreclosure losses are immaterial.

The Company, from time to time, may be a defendant in legal proceedings relating to the conduct of its banking business. Most of such legal proceedings are a normal part of the banking business and, in management’s opinion as of

March 31, 2024, the financial condition and results of operations of the Company would not be materially affected by the outcome of such legal proceedings.

Note 15-** Fair Value of Assets and Liabilities**

The Company uses fair value measurements to record fair value adjustments to certain assets and to determine fair value disclosures. The fair value of a financial instrument is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Fair value is best determined based upon quoted market prices. However, in many instances, there are no quoted market prices for the Company’s various financial instruments. In cases where quoted market prices are not available, fair values are based on estimates using present value or other valuation techniques. These techniques are significantly affected by the assumptions used, including the discount rate and estimate of future cash flows. Accordingly, the fair value estimates may not be realized in an immediate settlement of the instrument.

Fair value accounting guidance provides a consistent definition of fair value, which focuses on exit price in an orderly transaction (that is, not a forced liquidation or distressed sale) between market participants at the measurement date under current market conditions. If there has been a significant decrease in the volume and level of activity for the asset, a change in valuation technique or the use of multiple valuation techniques may be appropriate. In such instances, determining the price at which willing market participants would transact at the measurement date under current market conditions depends on the facts and circumstances and requires the use of significant judgment. The fair value is a reasonable point within the range that is most representative of fair value under current market conditions.

In accordance with this guidance, the Company groups its financial assets and liabilities generally measured at fair value in three levels, based on the markets in which the assets are traded and the reliability of the assumptions used to determine fair value.

Level 1 – Valuation is based on quoted prices in active markets for identical assets or liabilities that the reporting entity has the ability to access at the measurement date. Level 1 assets and liabilities generally include debt and equity securities that are traded in an active exchange market. Valuations are obtained from readily available pricing sources for market transactions involving identical assets or liabilities.

Level 2 – Valuation is based on inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly. The valuation may be based on quoted prices for similar assets or liabilities, quoted prices in markets that are not active, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the asset or liability.

Level 3 – Valuation is based on unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. Level 3 assets and liabilities may include financial instruments whose value is determined using pricing models, discounted cash flow methodologies, or similar techniques, as well as instruments for which the determination of fair value requires significant management judgment or estimation.

A financial instrument’s categorization within the valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement.

The following table sets forth assets and liabilities measured at fair value on a recurring basis at March 31, 2024 and June 30, 2023:

For those available for sale debt securities where quoted prices are unavailable, fair values are calculated based on market prices of similar securities and, therefore, are classified as Level 2 within the valuation hierarchy.

The following table represents changes in the Company’s available for sale debt securities measured at fair value on a recurring basis using unobservable inputs (Level 3). The Company hadone investment security measured at fair value on a recurring basis using significant unobservable inputs (Level 3) at March 31, 2024 and June 30, 2023. This security was purchased during the three months ended September 30, 2021 and was reclassified to Level 3 during the three months ended December 31, 2021 because of the lack of observable market data for this investment. The investment is valued on a quarterly basis by a third-party valuation expert. The Level 3 valuation is based on the 5/30 swap curve, floated at 1%, which is considered a significant unobservable input.

Under certain circumstances the Company may make adjustments to fair value for assets and liabilities although they are not measured at fair value on an ongoing basis. The Company had Level 3 financial assets measured at fair value on a nonrecurring basis, which are summarized below:

During the three months ended June 30, 2023, the Company foreclosed on collateral supporting a construction loan which was valued at$2.3 million and was included in foreclosed assets (OREO), net. The valuation was based on independent appraisals subject to certain discounts less estimated costs to sell. A subsequent independent appraisal was obtained in April 2024 resulting in a new valuation subject to certain discounts less estimated costs to sell. After adjusting for estimated costs to sell, the revised valuation was$1.4 million resulting in a provision for valuation allowance of$937,000 being recorded during the three and nine months ended March 31, 2024.

Financial Disclosures about Fair Value of Financial Instruments

Accounting guidance requires disclosures of the estimated fair value of certain financial instruments and the methods and significant assumptions used to estimate their fair values. Certain financial instruments and all non-financial instruments are excluded from the scope of the guidance.

The estimated fair values of financial instruments are as follows:

The methods and assumptions that were used to estimate the fair value of financial assets and financial liabilities that are measured at fair value on a recurring and non-recurring basis have been previously disclosed. A

description of the valuation methodologies used for instruments measured at fair value, as well as the general classification of such instruments pursuant to the valuation hierarchy, is set forth below:

Cash and due from banks – Due to their short -term nature, the carrying amount of cash and due from banks approximates fair value and is categorized in level 1 of the fair value hierarchy.

Federal funds sold – Due to their short-term nature, the carrying amount of federal funds sold approximates the fair value and is categorized in level 1 of the fair value hierarchy.

**Interest bearing deposits in other financial institutions-**Due to their short -term nature, the carrying amount of interest- bearing deposits in other financial institutions approximates fair value and is categorized in level 1 of the fair value hierarchy.

Available for sale securities – For those available for sale debt securities where quoted prices are unavailable, fair values are calculated based on market prices of similar securities and, therefore, are classified as level 2 within the valuation hierarchy. For those available for sale debt securities where market prices of similar securities are not available because of the lack of observable market data, they are valued on a quarterly basis by a third-party valuation expert and, therefore, are classified as level 3 within the valuation hierarchy.

Held to maturity debt securities-The fair value is estimated using quoted market prices or by pricing models and is categorized as level 2 of the fair value hierarchy.

Loans– The fair value of variable rate loans that reprice frequently are based on carrying values. The fair value of other loans is estimated by discounting future cash flows using current rates at which similar loans would be made to borrowers with similar credit ratings and is categorized in level 3 of the fair value hierarchy. Loans held for sale are included with loans, net above, with fair value based on commitments on hand from investors or prevailing market prices and is categorized in level 3 of the fair value hierarchy.

Investments in restricted stock – No secondary market exists for FHLB stock. The stock is bought and sold at par by the FHLB and management believes the carrying amount approximates fair value and is categorized in level 2 of the fair value hierarchy.

Interest receivable – Due to their short -term nature, the carrying amount approximates fair value and is categorized in level 1 of the fair value hierarchy.

Deposits – Fair value of deposits with no stated maturity, such as demand deposits, savings, and money market accounts, by definition, is the amount payable on demand on the reporting date. Fair value of fixed rate time deposits is estimated using discounted cash flows applying interest rates currently offered on similar time deposits. Deposits are categorized in level 2 of the fair value hierarchy.

Federal Home Loan Bank (FHLB) advances – The carrying amount approximates fair value and is categorized in level 2 of the fair value hierarchy.

Accrued interest payable – Due to their short-term nature, the carrying amount approximates fair value and is categorized in level 1 of the fair value hierarchy.

The estimated fair value of fee income on letters of credit at March 31, 2024 and June 30, 2023 is insignificant. Loan commitments on which the committed interest rate is less than the current market rate are also insignificant at March 31, 2024 and June 30, 2023.

Note 16-** Revenue Recognition**

In accordance with FASB Accounting Standards Codification Topic 606,Revenue from Contracts with Customers (Topic 606) and all subsequent amendments, the Company’s services that fall within the scope of Topic 606

are presented within non-interest income and are recognized as revenue as the Company satisfies its obligation to the customer. All of the Company’s revenue from contracts with customers in the scope of Topic 606 is recognized within non-interest income which includes service charges on deposit accounts and the sale of foreclosed assets.

A description of the Company’s revenue streams accounted for under Topic 606 follows:

Service Charges on Deposit Accounts: Service charges on deposit accounts relate to fees generated from a variety of deposit products and services rendered to customers. Charges include, but are not limited to, overdraft fees, non-sufficient fund fees, dormant fees, and monthly service charges. Such fees are recognized concurrent with the event on a daily basis or on a monthly basis depending upon the customer’s cycle date.

Gains (Losses) on Sales of Foreclosed Assets: The Company records a gain or loss from a sale of foreclosed assets when control of the property transfers to the buyer, which generally occurs at the time of an executed deed. If the Company finances the sale of foreclosed asset to the buyer, the Company assesses whether the buyer is committed to perform their obligations under the contract and whether collectability of the transaction price is probable. Once these criteria are met, the foreclosed asset is derecognized, and the gain or loss on sale is recorded upon the transfer of control of the property to the buyer. In determining the gain or loss on the sale, the Company adjusts the transaction price and related gain (loss) on sale if a significant financing component is present.