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.
The Marathon Bancorp, Inc. (MBBC) SEC filings page on Stock Titan provides access to the company’s official regulatory documents as a Nasdaq-listed bank holding company. Marathon Bancorp, Inc. is the parent of Marathon Bank, a Wisconsin-chartered savings bank, and its filings with the Securities and Exchange Commission offer detailed information about its governance, capital structure and community banking operations.
Investors can review annual reports on Form 10-K and quarterly reports on Form 10-Q for narrative and financial disclosures about Marathon Bancorp, Inc.’s performance, risk factors and the role of Marathon Bank in generating interest income from loans and debt securities. Proxy statements on Schedule 14A, such as the definitive proxy describing the 2025 Annual Meeting of Stockholders, explain how directors are elected, how the independent registered public accounting firm is selected and how voting rights are structured, including ownership limits for large beneficial holders.
Current reports on Form 8-K document material events, including stockholder meeting results, corporate actions and other significant developments. These filings can show how proposals were approved, how many shares are outstanding as of specific dates and how the company communicates key decisions to the market. For those monitoring ownership and executive activity, beneficial ownership tables in proxy materials and other filings outline holdings by directors, executive officers and principal stockholders, including shares held through employee stock ownership plans and stock options.
On Stock Titan, users can view Marathon Bancorp, Inc.’s SEC filings as they are made available through EDGAR and use AI-powered summaries to better understand complex documents. These tools can help clarify the implications of lengthy 10-Ks, 10-Qs, proxy statements and 8-Ks, and make it easier to track how MBBC’s regulatory disclosures reflect its community banking focus and capital management practices.
Marathon Bank Employee Stock Ownership Plan Trust reports beneficial ownership of 254,445 shares of Marathon Bancorp common stock, representing 8.66% of the outstanding class. The filing shows the trust has sole dispositive power over all 254,445 shares and sole voting power for 236,254 shares with shared voting power for 18,191 shares. The trustee is Community Bank of Pleasant Hill, operating as First Trust of MidAmerica. The reporting person identifies itself as an employee benefit plan and certifies the shares are held in the ordinary course of business and not to influence control of the issuer.
Marathon Bancorp, Inc. (MBBC) – Form 4/A insider filing: President & CEO Nicholas W. Zillges reported a Code F transaction on 06/28/2025, indicating that 1,169 common shares were withheld by the company at $9.99 per share (≈ $11.7 k) to satisfy tax obligations on previously-granted restricted stock that vested the same day. No open-market purchase or sale occurred.
After the withholding, Zillges directly owns 32,403 common shares and indirectly controls an additional 51,107 shares through a 401(k), IRA, and ESOP. The filing also reiterates outstanding option awards (29,994 options at $8.1294 expiring 2032 and 7,498 options at $6.4831 expiring 2033), both vesting 20 % annually. This amended filing (originally dated 07/01/2025) appears to update or clarify share counts; there are no new option grants or disposals beyond the tax-related share withholding. Overall, the event is routine and does not materially alter insider ownership or signal a change in strategic outlook.
Marathon Bancorp, Inc. (MBBC) – Insider Form 4 filing
SVP & CFO Joy Selting-Buchberger reported a routine Code F transaction dated 28 June 2025, indicating 517 common shares were withheld at $9.99 (≈ $5.2 k) to satisfy tax obligations on recently-vesting restricted stock. No open-market sale occurred.
Post-withholding, the executive directly owns 5,338 common shares; indirect holdings include 21,788 shares through the 401(k) and 1,264 shares via the ESOP. In addition, she holds 10,803 vested/unvested stock options at exercise prices of $8.1294 and $6.4831 that vest 20 % annually through 2033.
The filing shows ongoing alignment between the CFO and shareholders via meaningful equity exposure, while the small tax-related disposition is unlikely to influence the float or signal a change in sentiment.
Marathon Bancorp (MBBC) – insider Form 4 filing
On 28 June 2025, SVP & Chief Credit Officer Terry Cornish satisfied tax-withholding obligations by having 225 common shares withheld at $9.99 each (Transaction Code F). Following the transaction, his direct holdings stand at 3,044 shares, while indirect ownership remains at 25,816 shares via the 401(k) and 1,478 shares through the ESOP.
The filing also reiterates previously granted stock-option awards—4,498 options (exercise $8.1294, exp. 2032) and 4,804 options (exercise $6.4831, exp. 2033)—with no new grants or exercises reported. Overall, the activity is routine, involves a de-minimis dollar amount (~$2.3 k) relative to market cap, and is unlikely to influence the investment thesis.
Form 4 Filing – Marathon Bancorp, Inc. (MBBC) – 28 June 2025
President & CEO Nicholas W. Zillges reported a single Code F transaction, indicating the disposition of 1,196 common shares at $9.99 to cover taxes associated with previously granted equity awards. Following the withholding, Zillges directly owns 32,376 common shares. He also maintains indirect ownership of 47,780 shares through a 401(k), 604 shares in an IRA, and 2,723 shares via the ESOP.
No open-market purchases or sales were reported. The filing also lists outstanding stock options—29,994 options (exercise price $8.1294, expiring 2032) and 7,498 options (exercise price $6.4831, expiring 2033)—both vesting 20 % annually. These positions are disclosures only; no option exercises occurred.
Given the limited size (≈ $12k) and tax-withholding nature of the share disposition, the event is considered routine and unlikely to materially influence MBBC’s valuation or trading dynamics.