Marathon Bancorp (MBBC) CFO reports tax-withholding share disposition and option holdings

Rhea-AI Filing Summary

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.

Insider Trade Summary

5 transactions reported

Mixed 5 txns

Insider Selting-Buchberger Joy

Role SVP and CFO

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock	522	$15.49	$8K
holding	Stock Options	--	--	--
holding	Stock Options	--	--	--
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 4,760 shares (Direct, null); Stock Options — 5,999 shares (Direct, null); Common Stock — 21,788 shares (Indirect, By 401(k))

Footnotes (1)

1. Includes shares of restricted stock which vest at a rate of 20% per year commencing on June 28, 2023. Includes shares of restricted stock which vest at a rate of 20% per year commencing on May 16, 2024. 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 June 28, 2023. Stock options vest at a rate of 20% per year commencing on May 16, 2024.

Key Figures

Tax-withheld shares: 522 shares Tax-withholding price: $15.49 per share Direct shares after transaction: 4,760 shares +5 more

8 metrics

Tax-withheld shares 522 shares Common Stock withheld for taxes at $15.49 per share

Tax-withholding price $15.49 per share Price for 522 tax-withheld Common Stock shares

Direct shares after transaction 4,760 shares Common Stock directly held following tax-withholding disposition

ESOP indirect holdings 2,177 shares Common Stock held indirectly by ESOP

401(k) indirect holdings 21,788 shares Common Stock held indirectly via 401(k)

Stock options at $6.48 4,804 underlying shares Exercise price $6.48, expire May 16, 2033

Stock options at $8.13 5,999 underlying shares Exercise price $8.13, expire June 28, 2032

Tax-withholding transactions 1 transaction Code F disposition for tax liability

Key Terms

tax-withholding disposition, restricted stock, Stock Options, ESOP, +1 more

5 terms

tax-withholding disposition financial

"522 shares of Common Stock were withheld at $15.49 per share as a tax-withholding disposition"

A tax-withholding disposition is an event or transaction—such as selling or transferring securities, exercising options, or receiving compensation—that triggers a requirement to hold back part of the payment and remit it to tax authorities. It matters to investors because it reduces the cash they receive immediately and can change the timing and amount of taxable income, like a cashier taking a portion of your sale proceeds to pay taxes before you get the rest.

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.

Stock Options financial

"Stock options vest at a rate of 20% per year commencing on June 28, 2023."

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.

ESOP financial

"She also reports 2,177 shares held through an 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.

Section 16 of the Securities Exchange Act of 1934 regulatory

"Reflects transactions not required to be reported pursuant to Section 16 of the Securities Exchange Act of 1934, as amended."

A provision of federal securities law that requires company insiders—directors, officers and large shareholders—to publicly report their stock holdings and trades and to surrender any “short-swing” profits from purchases and sales within a six-month window. It acts like a rule that forces leaders to announce their trades and prevents quick buy-sell windfalls, giving investors transparency into insider activity and reducing opportunities for unfair gain.

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 06/30/2026 - 05:32 PM Accepted by SEC EDGAR 06/30/2026 - 05:31 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED 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^*

Selting-Buchberger Joy

(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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	SVP and CFO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/28/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form 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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	06/28/2026		F		522	D	$15.49	4,760(1)(2)	D
Common Stock								21,788	I	By 401(k)
Common Stock								2,177(3)	I	By ESOP

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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Options	$8.13							06/28/2023	06/28/2032	Common Stock	5,999(4)		5,999(4)	D
Stock Options	$6.48							05/16/2024	05/16/2033	Common Stock	4,804(5)		4,804(5)	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. Includes shares of restricted stock which vest at a rate of 20% per year commencing on May 16, 2024.

3. Reflects transactions not required to be reported pursuant to Section 16 of the Securities Exchange Act of 1934, as amended.

4. Stock options vest at a rate of 20% per year commencing on June 28, 2023.

5. Stock options vest at a rate of 20% per year commencing on May 16, 2024.

	/s/ Benjamin M. Azoff, pursuant to Power of Attorney	06/30/2026
	** Signature of Reporting Person	Date
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 SVP and CFO Joy Selting-Buchberger report on this Form 4?

Joy Selting-Buchberger reported a tax-withholding disposition of 522 Common Stock shares at $15.49 per share. The filing also updates her direct, ESOP, 401(k), and stock option holdings, showing current equity exposure rather than new open-market buying or selling.

How many Marathon Bancorp (MBBC) shares does the CFO hold after the reported transactions?

After the reported activity, the CFO directly holds 4,760 Common Stock shares. She also has 2,177 shares through an ESOP and 21,788 shares in a 401(k), giving a mix of direct and indirect ownership stakes in Marathon Bancorp, Inc.

Was the MBBC CFO’s Form 4 transaction an open-market sale of shares?

No. The filing classifies the transaction with code F, meaning 522 shares were withheld to satisfy tax obligations at $15.49 per share. This is a tax-withholding disposition, not a discretionary open-market sale initiated for portfolio reasons.

What stock options does the MBBC CFO hold according to this Form 4?

The CFO holds stock options over 4,804 Common Stock shares at $6.48, expiring May 16, 2033, and 5,999 shares at $8.13, expiring June 28, 2032. Footnotes state these options vest 20% per year starting in 2023 and 2024.

How are restricted stock awards for MBBC’s CFO structured in this filing?

Footnotes explain that certain restricted stock awards vest 20% per year, with schedules commencing on June 28, 2023 and May 16, 2024. This creates a multi-year vesting timeline, aligning portions of the CFO’s compensation with longer-term company performance.

Does this MBBC Form 4 include transactions exempt from Section 16 reporting?

Yes. A footnote notes these entries reflect transactions not required to be reported pursuant to Section 16 of the Securities Exchange Act of 1934. They are included for completeness of the ownership picture rather than as mandatory reportable trades.