Marathon Bancorp (MBBC) 401(k) Plan Trust Holds 193,211 Shares (6.57%)

Rhea-AI Filing Summary

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.

Insights

Institutional Ownership Analyst

Large plan holds a meaningful 193,211-share stake (6.57%).

The filing documents that the Marathon Bank 401(k) Plan Trust beneficially owns 193,211 shares with shared voting and dispositive power as of 06/30/2025. This level equals 6.57% of the class and is reportable under Schedule 13G.

Holder identity and trustee are disclosed; cash‑flow treatment and trading intent are not stated in the excerpt. Subsequent filings would be the source for changes in percent ownership.

Corporate Governance Specialist

Disclosure clarifies voting/dispositive authority through the trustee.

The schedule shows shared voting and shared dispositive powers for the 193,211 shares, indicating the trustee exercises voting influence for the employee benefit plan. The reporting person is an ERISA plan, per the filing text.

Governance impact depends on whether the plan votes at meetings; the filing does not state voting intentions or any arrangements with the issuer.

Key Figures

Filing type: Schedule 13G Shares beneficially owned: 193,211 shares Percent of class: 6.57% +2 more

5 metrics

Filing type Schedule 13G Beneficial ownership disclosure

Shares beneficially owned 193,211 shares Amount reported by Marathon Bank 401(k) Plan Trust

Percent of class 6.57% Ownership percentage as stated in Item 4

CUSIP 565759206 Common Stock CUSIP included on the form

Record date/reference date 06/30/2025 Date shown near header of the excerpt

Key Terms

Schedule 13G, beneficially owned, shared dispositive power

3 terms

Schedule 13G regulatory

"Schedule 13G disclosure showing beneficial ownership"

A Schedule 13G is a formal document that investors file with the government when they acquire a large ownership stake in a company, usually for investment purposes rather than control. It helps keep the public informed about who owns significant parts of a company's shares, which can influence how the company is managed and how investors make decisions. Filing this schedule is important for transparency and understanding the ownership landscape of publicly traded companies.

beneficially owned financial

"Amount beneficially owned: 193,211"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

shared dispositive power regulatory

"Shared Dispositive Power 193,211.00"

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 07/01/2026 - 05:20 PM Accepted by SEC EDGAR 07/01/2026 - 05:20 PM Learn about SEC filing dates

FAQ

What stake does Marathon Bank 401(k) Plan Trust report in Marathon Bancorp (MBBC)?

The trust reports beneficial ownership of 193,211 shares, representing 6.57% of Marathon Bancorp's common stock as of 06/30/2025. The filing lists shared voting and dispositive power held through the trustee.

Who is the trustee reporting the Marathon Bank 401(k) Plan Trust holding?

The trustee is Community Bank of Pleasant Hill, dba First Trust of MidAmerica, located at the address shown in the filing. The signature block is by Gerald Lau as trustee representative dated 07/01/2026.

Does the Schedule 13G show sole voting power for these shares?

No. The filing states 0 shares of sole voting power and 193,211 shares of shared voting power, indicating the plan's voting authority is exercised jointly or through the trustee structure.

Is the filing an acquisition or a passive ownership disclosure?

This is a Schedule 13G disclosure of beneficial ownership by an employee benefit plan; the filing reports holdings rather than describing a purchase, and it does not state intent to buy or sell in the excerpt.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

Marathon Bancorp, Inc.

(Name of Issuer)

Common Stock, par value $0.01 per share

(Title of Class of Securities)

565759206

(CUSIP Number)

06/30/2025

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): 565759206

1

Names of Reporting Persons

Marathon Bank 401(k) Plan Trust

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

WISCONSIN

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 193,211.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 193,211.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

193,211.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

6.57 %

12

Type of Reporting Person (See Instructions)

EP

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Marathon Bancorp, Inc.
(b)	Address of issuer's principal executive offices: 500 Scott Street, Wausau, Wisconsin 54403
Item 2.
(a)	Name of person filing: Marathon Bank 401(k) Plan Trust Trustee: Community Bank of Pleasant Hill, dba First Trust of MidAmerica
(b)	Address or principal business office or, if none, residence: 3500 N Village Dr. Suite 220 St. Joseph, Missouri 64506
(c)	Citizenship: Wisconsin
(d)	Title of class of securities: Common Stock, par value $0.01 per share
(e)	CUSIP Number(s): 565759206
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 193,211
(b)	Percent of class: 6.57%
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 0
	(ii) Shared power to vote or to direct the vote: 193,211
	(iii) Sole power to dispose or to direct the disposition of: 0
	(iv) Shared power to dispose or to direct the disposition of: 193,211
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	If a group has filed this schedule pursuant to §240.13d-1(b)(1)(ii)(K), so indicate under Item 3(k) and attach an exhibit stating the identity and Item 3 classification of each member of the group. If a group has filed this schedule pursuant to §240.13d-1(c) or §240.13d-1(d), attach an exhibit stating the identity of each member of the group. The reporting person is an employee benefit plan subject to the provisions of the Employee Retirement Income Security Act of 1974, as amended.
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Marathon Bank 401(k) Plan Trust

Signature:	/s/ Gerald Lau
Name/Title:	Gerald Lau, SVP, Community Bank of Pleasant Hill dba First Trust of MidAmerica, as Trustee
Date:	07/01/2026