Welcome to our dedicated page for Marathon Bancorp SEC filings (Ticker: MBBC), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
Marathon Bancorp, Inc. filings document its public-company reporting as the holding company for Marathon Bank and as the issuer of MBBC common stock listed on Nasdaq. The record includes 8-K disclosures for material corporate events such as stock repurchase programs and proxy-related filings for shareholder meetings.
Definitive proxy statements and voting reports describe board elections, independent auditor ratification, equity incentive plan matters and stockholder voting results. The filings also identify registered common stock, governance processes and capital actions for the bank holding company.
Marathon Bancorp, Inc. reported sharply higher profitability for the quarter ended March 31, 2026. Quarterly net income rose to $487,863, up from $148,403 a year earlier, with basic and diluted earnings per share of $0.18 versus $0.05. For the nine months, net income increased to $1.43 million compared with $374,437 in the prior-year period, or $0.53 per share versus $0.13. Loan growth to $213.5 million and higher loan yields helped lift net interest income to $2.06 million for the quarter and $6.07 million year-to-date. Asset quality remained manageable, with nonaccrual one‑to‑four‑family residential loans of $190,013 and an allowance for credit losses on loans of $1.71 million. Total assets reached $249.0 million, deposits were $174.2 million, and Federal Home Loan Bank advances increased to $24.0 million. The bank’s tier 1 capital to average assets ratio was a strong 15.35%, and it remained categorized as well capitalized under regulatory standards.
Marathon Bancorp, Inc. director Ann M. Werth exercised employee stock options to acquire additional common shares. On May 5, 2026, she exercised options into 599 shares at $6.48 and 899 shares at $8.13, for a total of 1,498 common shares.
Following these exercises, Werth directly holds 5,115 shares of common stock. Footnotes indicate related restricted stock and option grants vest at a rate of 20% per year starting on specified prior dates.
Marathon Bancorp, Inc. has approved a stock repurchase program authorizing the buyback of up to 146,931 shares of common stock, described as approximately 5.0% of current outstanding shares. This is the company’s first repurchase program since its second step conversion and related stock offering completed in April 2025.
Repurchases are expected to begin after the company releases results for the three and nine months ended March 31, 2026. Shares may be repurchased in open market or private transactions, including block trades or trading plans under Rule 10b5-1, and may be subject to Rule 10b-18 limitations. The authorization is discretionary and can be suspended, modified or terminated at any time, and the company is not obligated to repurchase any specific number of shares.
Marathon Bancorp, Inc. is asking stockholders at a May 28, 2026 special meeting to approve its 2026 Equity Incentive Plan. The plan would authorize up to 237,077 shares of common stock for awards, including 169,341 shares for stock options and 67,736 shares for restricted stock or units.
The Board unanimously recommends voting “FOR” the plan, saying it is needed to attract, retain and reward employees and directors and to align pay with stockholder interests, especially following the company’s 2025 second-step mutual‑to‑stock conversion. No new awards will be granted under the 2022 Equity Incentive Plan once the 2026 plan is effective.
As of April 10, 2026, Marathon Bancorp, Inc. had 2,950,136 common shares outstanding. Directors and executive officers as a group beneficially owned 337,983 shares, or 11.3%. The Marathon Bank ESOP Trust held 254,445 shares, or 8.6%.
Marathon Bancorp director Thomas L. Grimm exercised stock options to acquire additional common shares through a trust. On March 20, 2026, options covering 3,599 shares of common stock were exercised at $8.13 per share and 599 shares at $6.48 per share, increasing indirect holdings "By Trust" to 21,994 shares.
Following these transactions, Grimm also holds 2,998 shares directly. The options and related restricted stock and option awards vest at a rate of 20% per year starting on June 28, 2023 and May 16, 2024, indicating these are compensation-related equity grants becoming exercisable over time rather than open-market purchases.
Marathon Bancorp, Inc. executive Nora Spatz reported option exercises that increased her equity stake in the company. As EVP and CAO, she exercised stock options for 2,399 shares of Common Stock at $8.13 per share and 1,921 shares at $6.48 per share on March 18, 2026.
Following these exercises, her direct Common Stock holdings rose to 19,979 shares. She also has additional indirect holdings, including 35,701 shares held through a 401(k) plan and 1,598 shares held by a trust. Footnotes note that her stock options and restricted stock vest at a rate of 20% per year beginning on June 28, 2023 and May 16, 2024, respectively.
Marathon Bancorp, Inc. President and CEO Nicholas W. Zillges exercised stock options and acquired additional common shares of the company. On February 23, 2026, he exercised 2,998 stock options at a price of $0.00 per option, increasing his directly held options to 4,500.
The option exercise resulted in the acquisition of 2,998 shares of common stock at $6.48 per share, bringing his directly owned common stock to 37,801 shares. He also has indirect ownership of common stock through an IRA, an ESOP, and a 401(k) plan.
Footnotes indicate certain restricted stock and stock options vest at a rate of 20% per year beginning on June 28, 2023 or May 16, 2024, meaning his ability to fully access these awards increases gradually over several years.
AllianceBernstein L.P. has filed a Schedule 13G reporting beneficial ownership of 153,238 shares of Marathon Bancorp Inc common stock, representing 5.2% of the class as of 12/31/2025. The shares are held for investment purposes in client discretionary advisory accounts.
AllianceBernstein states it has sole power to vote and dispose of these 153,238 shares and no shared voting or dispositive power. It certifies the holdings are in the ordinary course of business and not for the purpose of changing or influencing control of Marathon Bancorp.
Marathon Bancorp, Inc. reported sharply higher profitability for the quarter and six months ended December 31, 2025. Quarterly net income rose to $501,396, up from $51,127 a year earlier, with diluted earnings per share increasing to $0.19 from $0.02. For the six-month period, net income increased to $945,689 versus $226,034, and diluted earnings per share improved to $0.35 from $0.08. Loan balances grew to $211.9 million from $200.8 million, while deposits reached $178.4 million. Asset quality indicators remained solid, with nonaccrual loans concentrated in one-to-four-family residential mortgages totaling $190,013 and an allowance for credit losses of $1.7 million. The bank’s capital position stayed strong, with a Tier 1 leverage ratio of 15.27%, well above regulatory well-capitalized thresholds.
Marathon Bancorp, Inc. reported the results of its Annual Meeting of Stockholders held on November 18, 2025. Stockholders elected two directors, Ann M. Werth and Timothy R. Wimmer, each to serve a three-year term ending in 2028. Ms. Werth received 1,361,508 votes for and 308,253 withheld, and Mr. Wimmer received 1,538,316 votes for and 131,445 withheld, with 430,230 broker non-votes for each nominee.
Stockholders also ratified the appointment of Bonadio & Co., LLP as Marathon Bancorp’s independent registered public accounting firm for the fiscal year ending June 30, 2026, with 2,073,452 votes for, 12,360 against and 14,179 abstentions. All proposals presented to stockholders were approved.