STOCK TITAN

Marathon Bancorp (MBBC) CEO exercises options and updates share holdings

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

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.

Positive

  • None.

Negative

  • None.
Insider Zillges Nicholas W
Role President and CEO
Type Security Shares Price Value
Exercise Stock Options 1,500 $0.00 --
Exercise Common Stock 1,500 $6.48 $10K
holding Stock Options -- -- --
holding Common Stock -- -- --
holding Common Stock -- -- --
holding Common Stock -- -- --
Holdings After Transaction: Stock Options — 3,000 shares (Direct, null); Common Stock — 39,301 shares (Direct, null); Common Stock — 604 shares (Indirect, By IRA)
Footnotes (1)
  1. Includes shares of restricted stock which vest at a rate of 20% per year commencing on June 28, 2023. Reflects transactions not required to be reported pursuant to Section 16 of the Securities Exchange Act of 1934, as amended. Stock options vest at a rate of 20% per year commencing on May 16, 2024. Stock options vest at a rate of 20% per year commencing on June 28, 2023.
Options exercised 1,500 shares Common Stock acquired via option exercise at $6.48 on June 3, 2026
Exercise price $6.48/share Price for 1,500 Common Stock shares acquired by option exercise
Direct Common Stock holdings 39,301 shares Total directly held Common Stock after transactions
Remaining stock options 29,994 options at $8.13 Unexercised options on Common Stock expiring June 28, 2032
401(k) indirect holdings 50,084 shares Common Stock held indirectly through 401(k)
ESOP indirect holdings 4,429 shares Common Stock held indirectly through ESOP
IRA indirect holdings 604 shares Common Stock held indirectly through IRA
Stock options financial
"Stock options vest at a rate of 20% per year commencing on May 16, 2024."
Stock options are agreements that give a person the right to buy or sell a company's stock at a specific price within a certain time frame. They are often used as a reward or incentive, similar to a coupon that can be used later if the stock price rises, allowing the holder to make a profit.
restricted stock financial
"Includes shares of restricted stock which vest at a rate of 20% per year..."
Shares granted to an individual that carry limits on transfer or sale until certain conditions are met, such as staying with the company for a set time or hitting performance targets. Think of them as a locked gift that gradually opens; for investors they matter because they affect how many shares may enter the market later, signal management incentives and potential dilution, and reveal confidence in future company performance.
Section 16 regulatory
"Reflects transactions not required to be reported pursuant to Section 16 of the Securities Exchange Act of 1934..."
Section 16 is a U.S. securities law rule that governs the trading and disclosure obligations of company insiders — typically officers, directors and large shareholders — to promote transparency and deter unfair profit-taking. It requires insiders to publicly report their stock trades and allows companies or the issuer to reclaim quick, short-term profits from certain insider trades, like a scoreboard and a refund policy that help investors see and limit possible insider advantage.
ESOP financial
"Common Stock, nature of ownership: By ESOP"
An Employee Stock Ownership Plan (ESOP) is a program that gives employees ownership shares in their company, often as part of their benefits package. It acts like a company-sponsored savings plan, allowing workers to have a stake in the company's success, which can boost motivation and loyalty. For investors, ESOPs can influence company decisions and stock value, making them an important aspect of corporate ownership and governance.
401(k) financial
"Common Stock, nature of ownership: By 401(k)"
A 401(k) is a type of retirement savings plan offered by employers that allows workers to set aside a portion of their paycheck before taxes are taken out. The money saved in a 401(k) can grow over time through investments, helping individuals build funds for their future retirement. It matters to investors because it provides a tax-advantaged way to save and invest for long-term financial security.
See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google
Add on Google
SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Zillges Nicholas W

(Last)(First)(Middle)
500 SCOTT STREET

(Street)
WAUSAU WISCONSIN 54403

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
Marathon Bancorp, Inc. /MD/ [ MBBC ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
XOfficer (give title below)Other (specify below)
President and CEO
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
06/03/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Common Stock06/03/2026M1,500A$6.4839,301(1)D
Common Stock604IBy IRA
Common Stock4,429(2)IBy ESOP
Common Stock50,084IBy 401(k)
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Stock Options$6.4806/03/2026M1,50005/16/202405/16/2033Common Stock1,500(3)$03,000(3)D
Stock Options$8.1306/28/202306/28/2032Common Stock29,994(4)29,994(4)D
Explanation of Responses:
1. Includes shares of restricted stock which vest at a rate of 20% per year commencing on June 28, 2023.
2. Reflects transactions not required to be reported pursuant to Section 16 of the Securities Exchange Act of 1934, as amended.
3. Stock options vest at a rate of 20% per year commencing on May 16, 2024.
4. Stock options vest at a rate of 20% per year commencing on June 28, 2023.
/s/ Benjamin Azoff, pursuant to power of attorney06/05/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What did MBBC President and CEO Nicholas Zillges report in this Form 4?

Nicholas Zillges reported exercising stock options to acquire 1,500 MBBC Common Stock shares at $6.48 per share. The filing also updates his direct and indirect share holdings, including remaining stock options and shares held via retirement and employee ownership plans.

How many Marathon Bancorp (MBBC) shares does Nicholas Zillges hold directly after this filing?

After this filing, Nicholas Zillges directly holds 39,301 MBBC Common Stock shares. This reflects the addition of 1,500 shares acquired through a stock option exercise, as disclosed in the non-derivative transaction section of the Form 4 report.

What stock options does Nicholas Zillges retain following the reported MBBC transactions?

Following the reported transactions, Nicholas Zillges retains 29,994 MBBC stock options with an $8.13 exercise price. These options relate to Common Stock and are scheduled to expire on June 28, 2032, according to the derivative holdings information included in the filing.

What indirect MBBC share holdings does Nicholas Zillges report in this Form 4?

Nicholas Zillges reports indirect MBBC holdings of 50,084 shares through a 401(k), 4,429 shares through an ESOP, and 604 shares through an IRA. These positions are classified as indirect ownership and are separately listed from his directly held Common Stock shares.

At what price were the exercised MBBC stock options converted into Common Stock shares?

The exercised MBBC stock options were converted into 1,500 Common Stock shares at $6.48 per share. This transaction is coded as an option exercise (code M) and increases Nicholas Zillges’ directly held Common Stock position reported in the Form 4.

Do the MBBC footnotes indicate any non-reportable Section 16 transactions for Nicholas Zillges?

Yes, a footnote states that certain entries reflect transactions not required to be reported under Section 16 of the Securities Exchange Act of 1934. These lines primarily document holdings detail rather than additional reportable purchases or sales of MBBC securities.