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. (MBBC) seeks stockholder votes at its November 17, 2026 annual meeting on two three-year director seats, ratification of Bonadio & Co., LLP as auditor for fiscal 2027, a non-binding advisory vote on named executive officer compensation, and the frequency of future compensation votes (one, two or three years). The nominees are Amy Zientara, Chairwoman of the Board, and Nicholas W. Zillges, President and Chief Executive Officer. The Board recommends voting FOR each applicable proposal and FOR annual compensation votes. Holders of record on September 29, 2026 may vote; 3,007,604 common shares were outstanding on that date.
Zillges’ total reported compensation was $999,312 in fiscal 2026, compared with $573,273 in fiscal 2025. The pay-versus-performance disclosure lists compensation actually paid of $1,299,191 for fiscal 2026. Marathon Bancorp’s net income was $1.791 million, versus $42,000 in fiscal 2025. The disclosure reports a value of $233.28 for an initial fixed $100 investment based on cumulative total shareholder return for fiscal 2026. The say-on-pay vote is non-binding, and the Compensation Committee will consider its outcome in future executive compensation decisions.
Marathon Bancorp, Inc. (MBBC) said Joy C. Selting-Buchberger, Chief Financial Officer of Marathon Bancorp and Marathon Bank, informed both boards on September 30, 2026, of her decision to retire from those roles on July 2, 2027.
Marathon Bancorp, Inc. (MBBC) reports that executive vice president and chief administrative officer Nora Spatz exercised stock options on September 18, 2026 to acquire 1,201 shares of common stock at $8.13 per share and 962 shares at $6.48 per share. These exercises reduced corresponding option positions and increased directly held common shares, which include restricted stock that vests 20% annually starting in 2023, 2024 and 2027. Spatz continues to hold options covering 11,000 shares of common stock at an exercise price of $14.55 per share, expiring June 15, 2036, vesting 20% per year commencing June 15, 2027, and also has indirect common stock holdings through a 401(k), a trust, custodial accounts, an employee stock ownership plan, and a spouse account. No transactions are reported as made under a Rule 10b5-1 trading plan.
Marathon Bancorp, Inc. (MBBC), the holding company for Marathon Bank, reports a community‑bank balance sheet with $261.0 million in consolidated assets, $189.8 million in deposits and $48.0 million in stockholders’ equity at June 30, 2026.
The company completed its April 2025 mutual‑to‑stock conversion, selling 1,693,411 shares at $10.00 per share and generating $16.9 million in gross proceeds (about $15.2 million net after $1.7 million in expenses). It also expanded its ESOP financing to $2.1 million, to be repaid over 25 years.
Loans total $219.3 million, led by commercial real estate ($95.9 million, 43.7%), multifamily ($53.9 million, 24.6%) and one‑ to four‑family mortgages ($63.5 million, 29.0%). Credit quality appears strong: the allowance for credit losses is $1.75 million (0.80% of loans), with no charge‑offs in 2026 and an allowance‑to‑nonperforming‑loans ratio above 2,600%.
Funding is largely core deposits of $114.9 million (60.1% of deposits), supplemented by $14.0 million in brokered CDs and $20.0 million in FHLB advances. Uninsured deposits total $77.3 million. Marathon Bank is well above required capital levels, with a Wisconsin net worth ratio of 15.45% and use of the community bank leverage ratio framework, and it continues to pursue commercial and multifamily growth in its Wisconsin markets.
Marathon Bancorp, Inc. reported a Schedule 13G/A filing showing the Marathon Bank 401(k) Plan Trust beneficially owns 216,071 shares of Common Stock, representing 7.32% of the class as of 06/30/2026. The trust reports shared voting and dispositive power over those shares. The filing is signed by the trustee's authorized representative on 07/01/2026.
Marathon Bancorp, Inc. reports a Schedule 13G disclosure showing the Marathon Bank 401(k) Plan Trust beneficially owns 193,211 shares of Common Stock, representing 6.57% of the class as of 06/30/2025.
The filing lists shared voting and dispositive power over the 193,211 shares and identifies the trustee as Community Bank of Pleasant Hill, dba First Trust of MidAmerica. The schedule is signed by Gerald Lau as trustee representative.
Marathon Bancorp, Inc. executive Terry Cornish, SVP and Chief Credit Officer, reported updated holdings in company securities. The only actual transaction was a tax-withholding disposition of 247 shares of Common Stock at $15.49 per share, used to cover tax obligations.
After this withholding, Cornish directly holds 6,256 Common shares, plus indirect interests in 2,250 shares through an ESOP and 27,205 shares through a 401(k). Cornish also holds stock options on 7,000 shares at $14.55, 4,804 shares at $6.48, and 4,498 shares at $8.13, with expirations between 2032 and 2036 and vesting at 20% per year as noted in the footnotes.
Marathon Bancorp EVP and COO Michelle Knopf reported routine equity updates. A Form 4 shows a tax-withholding disposition of 225 shares of common stock at $15.49 per share to cover obligations, leaving her with 8,557 directly held shares. She also has indirect holdings of 2,235 shares by ESOP and 19,339 shares by 401(k). Knopf continues to hold stock options for 10,000 shares at $14.55, 4,804 shares at $6.48, and 4,498 shares at $8.13 expiring between 2032 and 2036.
Marathon Bancorp, Inc. President and CEO Nicholas W. Zillges reported updated equity holdings in a Form 4. The only transaction was a Form F tax-withholding disposition of 1,269 shares of Common Stock at $15.49 per share, leaving 55,936 shares of Common Stock held directly.
He also holds Common Stock indirectly through an ESOP (4,429 shares), an IRA (604 shares), and a 401(k) plan (51,160 shares). In addition, he retains stock options over 42,335 shares at $14.55, 3,000 shares at $6.48, and 29,994 shares at $8.13, which vest 20% per year on stated schedules.