Every Form 4 that Marathon Bancorp, Inc. (MBBC) has filed with the SEC in the last 12 months is listed below, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
A Form 4 covers the transactions officers, directors and large holders report, so if you follow MBBC and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full MBBC filings page.
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.
Marathon Bancorp, Inc. EVP and CAO Nora Spatz reported a routine tax-related share disposition. On June 28, 2026, 503 shares of common stock were withheld at $15.49 per share to cover tax obligations, leaving 27,096 directly held shares.
Spatz also reports several indirect common stock holdings through a spouse, ESOP, custodial account, trust and 401(k), plus outstanding stock options over 11,000, 2,883 and 2,400 shares at exercise prices of $14.55, $6.48 and $8.13, vesting 20% per year.
Marathon Bancorp, Inc. SVP and CFO Joy Selting-Buchberger reported routine equity activity, mainly a tax-related share disposition. 522 shares of Common Stock were withheld at $15.49 per share as a tax-withholding disposition, leaving 4,760 directly held shares.
She also reports 2,177 shares held through an ESOP and 21,788 shares in a 401(k), both as indirect ownership. In addition, she holds stock options on 4,804 shares at $6.48 expiring on May 16, 2033, and on 5,999 shares at $8.13 expiring on June 28, 2032, which vest over time.
Marathon Bancorp, Inc. President and CEO Nicholas W. Zillges reported an open-market purchase of 970 shares of common stock at $15.00 per share on June 16, 2026, increasing his direct ownership to 57,205 shares.
He also reports indirect holdings of 4,429 shares by an ESOP, 604 shares by an IRA, and 51,160 shares by a 401(k). In addition, he holds stock options on 42,335 shares at $14.55 per share expiring on June 15, 2036, 3,000 shares at $6.48 expiring on May 16, 2033, and 29,994 shares at $8.13 expiring on June 28, 2032, with related vesting schedules described in the filing.
Marathon Bancorp, Inc. director Ann M. Werth reported equity compensation awards rather than market trades. She received a grant of 3,386 shares of common stock at no cost, bringing her directly held common stock to 8,501 shares. She was also granted 8,467 stock options with an exercise price of $14.55 per share, which begin vesting at a rate of 20% per year starting on June 15, 2027.
The filing also lists previously granted stock options covering 900 shares at an exercise price of $6.48 per share and 600 shares at $8.13 per share, expiring in 2033 and 2032, respectively. Footnotes explain that both restricted stock and options vest in 20%-per-year increments from their stated commencement dates, underscoring that these are structured, time-based compensation awards with no reported stock sales.
Marathon Bancorp director Timothy R. Wimmer reported new equity awards in common stock and stock options. He received 3,386 shares of common stock as a grant at no cash cost, bringing his directly held common stock to 6,384 shares, separate from 13,862 shares held indirectly by a trust.
Wimmer was also granted 8,467 stock options on common stock with a $14.55 exercise price, all held directly. The restricted stock and these new options vest 20% per year starting on June 15, 2027, while earlier restricted stock and option awards continue vesting annually from June 28, 2023 and May 16, 2024.
Marathon Bancorp director Thomas L. Grimm reported new equity awards and updated holdings. He received 3,386 shares of common stock as a grant at no cost, increasing his directly held common stock to 6,384 shares. Separately, a trust associated with him holds 22,294 shares of common stock.
Grimm was also granted 8,467 stock options with an exercise price of $14.55 per share, all held directly. These options vest at a rate of 20% per year commencing on June 15, 2027. He continues to hold previously granted options covering 600 shares at $6.48 and 2,400 shares at $8.13, each vesting 20% annually from earlier dates.
Marathon Bancorp, Inc. director and Chairwoman of the Board Amy Zientara reported new equity compensation awards. She received 3,386 shares of Common Stock as a grant at $0.00 per share, increasing her direct Common Stock holdings to 27,110 shares. She was also granted stock options on 8,467 shares of Common Stock with an exercise price of $14.55 per share, exercisable through June 15, 2036. The filing also lists previously granted stock options on 600 shares at $6.48 per share expiring in 2033 and 2,400 shares at $8.13 per share expiring in 2032. Footnotes state that both the restricted stock and these options vest in installments of 20% per year beginning on their respective commencement dates.
Marathon Bancorp, Inc. senior vice president and chief credit officer Terry Cornish received new equity compensation. He was granted 3,500 shares of common stock at $0.00 per share and 7,000 stock options with a $14.55 exercise price. The restricted stock and these options vest 20% per year starting on June 15, 2027. After the grant, he directly holds 6,503 common shares and retains earlier stock options covering 4,804 shares at $6.48 (expiring 2033) and 4,498 shares at $8.13 (expiring 2032), alongside additional indirect holdings through an ESOP and a 401(k).
Marathon Bancorp, Inc. executive Michelle Knopf reported new equity awards and updated holdings. As EVP and COO, she received a grant of 5,450 shares of common stock at $0.0000 per share, increasing her direct common stock holdings to 8,782 shares. She was also granted 10,000 stock options with an exercise price of $14.5500 per share, expiring on June 15, 2036, which vest 20% per year starting on June 15, 2027.
In addition, Knopf holds indirect common stock through employee benefit plans, including 2,235 shares held by an ESOP and 19,339 shares held by a 401(k) plan. She also retains previously granted stock options covering 4,804 shares at $6.4800 per share expiring in 2033 and 4,498 shares at $8.1300 per share expiring in 2032, which vest 20% per year from earlier grant dates.
Marathon Bancorp, Inc. reported that President and CEO Nicholas W. Zillges received a grant of 16,934 shares of Common Stock and 42,335 stock options on June 15, 2026. The shares and options were awarded at no cash cost per share as compensation, not through open‑market buying.
The 16,934 restricted shares vest in 20% annual installments starting on June 15, 2027, aligning value over time. The 42,335 stock options have a $14.55 exercise price and also vest 20% per year from June 15, 2027, with an expiration on June 15, 2036. Following the grant, Zillges directly holds 56,235 common shares and maintains additional indirect holdings through plan accounts.
Marathon Bancorp, Inc. executive vice president and chief administrative officer Nora Spatz reported new equity compensation awards. She received 6,450 shares of common stock as a grant at a stated price of $0.00 per share, bringing her direct common stock holdings to 27,599 shares, including restricted stock that vests.
Spatz was also granted stock options on 11,000 shares of common stock with an exercise price of $14.55 per share, exercisable through 2036-06-15. Footnotes state the new restricted stock and these options vest at 20% per year commencing on June 15, 2027, and other previously granted restricted stock and options vest 20% per year from June 28, 2023 and May 16, 2024.
Marathon Bancorp senior executive Terry Cornish increased his stake in company stock through a series of open-market purchases. Over several days in early June 2026, he bought a total of 1,389 shares of Common Stock indirectly through a 401(k) plan at prices between $13.655 and $14.75 per share.
After these purchases, Cornish holds 27,205 shares indirectly via his 401(k), in addition to 3,003 shares held directly and 2,250 shares held through an ESOP. He also holds stock options on 4,804 shares at an exercise price of $6.48 per share and 4,498 shares at $8.13 per share, with expirations in 2033 and 2032, respectively.
Marathon Bancorp EVP and COO Michelle Knopf reported a series of open-market purchases of 1,041 shares of common stock for her 401(k) between June 3 and June 10, at prices around $13.65 to $14.75 per share. Following these buys, her 401(k) holds 19,339 indirect shares, alongside additional direct, ESOP, and stock option positions in Marathon Bancorp stock.
Marathon Bancorp President and CEO Nicholas W. Zillges reported a series of open-market purchases of common stock through his 401(k) account. Between early and mid-June 2026, he bought a total of 1,076 shares at weighted-average prices ranging from about $13.66 to $14.75 per share, bringing his 401(k) holdings to 51,160 shares.
He also reports indirect holdings of 4,429 shares through an ESOP and 604 shares through an IRA, plus 39,301 shares held directly. In addition, he holds stock options on 29,994 shares at an exercise price of $8.13 expiring in 2032 and options on 3,000 shares at $6.48 expiring in 2033, both vesting 20% per year from their respective commencement dates.
Marathon Bancorp, Inc. EVP and CAO Nora Spatz reported a series of open-market purchases of Marathon Bancorp common stock through a 401(k) plan. Between June 3 and June 10, she bought a total of 3,819 shares at prices ranging from about $13.75 to $14.75 per share, bringing her indirect 401(k) holdings to 39,520 shares of common stock. In addition to these 401(k) holdings, she also reports indirect holdings through a spouse, an ESOP, custodial accounts, and a trust, plus direct ownership of 21,149 shares. She further holds stock options covering 2,883 shares at an exercise price of $6.48 and 2,400 shares at $8.13, which vest over time and expire in 2033 and 2032, respectively.
Marathon Bancorp director Amy Zientara exercised stock options to acquire additional common shares. On June 3, 2026 she exercised options for 899 shares at $6.48 per share and 3,599 shares at $8.13 per share, totaling 4,498 newly acquired shares.
The related derivative entries show these transactions were option exercises, not open-market purchases or sales. Footnotes indicate both her restricted stock and stock options vest at a rate of 20% per year starting in 2023 and 2024, highlighting that these awards are part of ongoing equity compensation.
Marathon Bancorp, Inc. EVP and CAO Nora Spatz exercised stock options to acquire additional common shares. On this Form 4, she exercised options covering 1,200 shares of common stock at an exercise price of $8.13 per share, bringing her directly held common stock to 21,149 shares.
She also reports various indirect holdings through a spouse, ESOP, custodial accounts, a trust, and a 401(k). Footnotes note that some reflected position changes were not required to be reported under Section 16 and that her restricted stock and stock options generally vest 20% per year beginning in 2023 and 2024.
Marathon Bancorp, Inc. President and CEO Nicholas W. Zillges reported an option exercise and updated his share holdings. He exercised stock options to acquire 1,500 shares of Common Stock at $6.48 per share, bringing his directly held Common Stock to 39,301 shares.
He now holds 29,994 stock options with an $8.13 exercise price expiring on June 28, 2032. Indirect holdings include 50,084 shares through a 401(k), 4,429 shares through an ESOP, and 604 shares through an IRA. Some entries reflect transactions not required to be reported under Section 16.
Marathon Bancorp director Thomas L. Grimm reported option-related activity and updated holdings. He exercised stock options covering 300 shares of Common Stock at $6.48 per share, with the acquired shares held indirectly by a trust, bringing that trust’s stake to 22,294 shares.
Grimm now also holds 2,998 Common shares directly, which include restricted stock that vests 20% per year beginning June 28, 2023. On the derivative side, he retains 600 stock options at a $6.48 exercise price expiring May 16, 2033, and a separate option position covering 2,400 shares at an $8.13 exercise price expiring June 28, 2032, both vesting in 20% annual installments.
Marathon Bancorp, Inc. director Timothy R. Wimmer exercised stock options for 4,498 shares of common stock on June 3, 2026, at exercise prices of $8.13 and $6.48 per share, with shares held indirectly by a trust. After these transactions, he holds 3,000 stock options directly, 13,862 common shares indirectly by trust, and 2,998 common shares directly.
Marathon Bancorp SVP and CCO Terry Cornish reported a small tax-related share disposition. On the reported date, 41 shares of common stock were withheld at $14.50 per share to cover tax obligations, a non‑market transaction coded as a tax-withholding disposition.
After this, Cornish directly held 3,003 common shares, plus indirect holdings of 1,478 shares through an ESOP and 25,816 shares through a 401(k). Cornish also held stock options over 4,804 shares at $6.48 expiring on May 16, 2033 and 4,498 shares at $8.13 expiring on June 28, 2032, which vest 20% per year starting in 2023 and 2024.
Marathon Bancorp, Inc. SVP and CFO Joy Selting-Buchberger reported updated holdings, including a tax-related share disposition. A total of 56 shares of common stock were withheld at $14.50 per share to cover tax obligations, leaving 5,282 directly held common shares. She also holds common stock indirectly through an ESOP (1,264 shares) and a 401(k) plan (21,788 shares). In addition, she retains stock options on 4,804 shares at an exercise price of $6.48 expiring on May 16, 2033, and options on 5,999 shares at $8.13 expiring on June 28, 2032. Footnotes note that related restricted stock and options vest 20% per year starting in 2023 and 2024.
Marathon Bancorp, Inc. EVP and CAO Nora Spatz reported updated holdings of the company’s common stock. A Form 4 entry shows an F-code tax-withholding disposition of 30 shares at $14.50 per share, leaving 19,949 directly held common shares.
She also reports several indirect holdings, including shares held by a spouse, ESOP, as custodian, a trust, and a 401(k) plan, plus stock options on 2,883 shares at $6.48 expiring in 2033 and 3,600 shares at $8.13 expiring in 2032, which vest 20% per year.
Marathon Bancorp, Inc. EVP and COO Michelle Knopf reported an update to her equity holdings in company securities. The filing shows a tax-withholding disposition of 86 shares of Common Stock at $14.50 per share, used to cover tax obligations rather than an open-market sale.
After this event, she holds 3,332 Common shares directly, plus indirect holdings of 1,274 shares through an ESOP and 18,298 shares through a 401(k). She also retains stock options over 4,804 shares at $6.48 and 4,498 shares at $8.13, which vest at 20% per year under existing equity award schedules.
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 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.
Marathon Bancorp (MBBC) reported an insider purchase by its President and CEO. On 11/13/2025, the reporting person bought 1,325 shares of common stock at $10.9999 per share. Following this trade, directly held shares totaled 33,728. Indirect holdings include 47,780 shares by a 401(k), 604 by an IRA, and 2,723 by an ESOP.
The filer also holds stock options: 29,994 at an exercise price of $8.1294 (exercisable beginning 06/28/2023, expiring 06/28/2032) and 7,498 at $6.4831 (exercisable beginning 05/16/2024, expiring 05/16/2033). Restricted stock and options vest at 20% per year on the stated schedules.