UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
FORM 8-K
CURRENT REPORT
PURSUANT TO SECTION 13 OR 15(D) OF
THE SECURITIES EXCHANGE ACT OF 1934
Date of Report (Date of earliest event reported): April 24, 2026
MARATHON BANCORP, INC.
(Exact Name of Registrant as Specified in its Charter)
Maryland
001-42608
86-2191258
(State or Other Jurisdiction)
(Commission File No.)
(I.R.S. Employer
of Incorporation)
Identification No.)
500 Scott Street, Wausau, Wisconsin
54402
(Address of Principal Executive Offices)
(Zip Code)
Registrant’s telephone number, including area code: (715) 845-7331
Not Applicable
(Former Name or Former Address, if Changed Since Last Report)
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):
☐
Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
☐
Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
☐
Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
☐
Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
Securities registered pursuant to Section 12(b) of the Act:
Title of each class
Trading
Symbol(s)
Name of each exchange on which registered
Common Stock, $0.01 par value
MBBC
The Nasdaq Stock Market LLC
Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).
Emerging growth company ☒
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐
Item 8.01. Other Events
On April 24, 2026, Marathon Bancorp, Inc. (the “Company”) announced it has adopted a stock repurchase program. Under the repurchase program, the Company may repurchase up to 146,931 shares of its common stock, or approximately 5.0% of the current outstanding shares. Repurchases are expected to commence after the Company publicly releases its results of operations at and for the three and nine months ended March 31, 2026.
A copy of the press release announcing the stock repurchase program is included as exhibit 99.1 to this report and is incorporated herein by reference.
Item 9.01 Financial Statements and Exhibits
(a)
Financial statements of businesses acquired. None.
(b)
Pro forma financial information. None.
(c)
Shell company transactions: None.
(d)
Exhibits.

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SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, hereunto duly authorized.
Marathon Bancorp, Inc.
DATE: April 24, 2026
By:
/s/ Nicholas W. Zillges
Nicholas W. Zillges
President and Chief Executive Officer