Marathon Bancorp, Inc.
Marathon Bancorp, Inc. (Nasdaq: MBBC) is the holding company for Marathon Bank, a Wisconsin-chartered community savings bank founded in 1902. The bank takes deposits from individuals and businesses and uses them to fund commercial and multifamily real estate loans, residential mortgages, and, to a lesser extent,… From the company’s description.
In fiscal 2026, Marathon Bancorp, Inc. reported revenue of $9.03M, up 33.0% from fiscal 2025, and net income of $1.79M. Its pre-tax margin was 23.6%.
Margins and return on equity change in ; everything else in percent. Fewer shares and less debt are shown plainly, not as bad news — it depends what you make of buybacks. Dotted labels explain each measure.
What Marathon Bancorp, Inc. does
In the company’s own words
Marathon Bancorp, Inc. (Nasdaq: MBBC) is the holding company for Marathon Bank, a Wisconsin-chartered community savings bank founded in 1902. The bank takes deposits from individuals and businesses and uses them to fund commercial and multifamily real estate loans, residential mortgages, and, to a lesser extent, commercial and industrial, construction and consumer loans; it also invests in debt securities and offers checking, savings, money market and certificate-of-deposit accounts. Its customers include local households, small businesses, medical providers, property owners and developers in central and southeastern Wisconsin. The company operates through its banking subsidiary, with a main office and four branches in Marathon, Ozaukee and Waukesha Counties. Fixed-rate conforming residential mortgages are generally sold to secondary-market purchasers with servicing retained, while adjustable-rate residential loans and most other lending are held in portfolio. At June 30, 2026, Marathon Bancorp had $261.0 million in consolidated assets and $189.8 million in deposits. Its website is www.marathonbank.com.
Company details
- Sector
- Financials
- Industry (SIC)
- Banks & Brokers
- Headquarters
- WAUSAU, WI
- Fiscal year end
- June
- CIK
- 1835385
- SIC
- 6036
Financial performance, year by year
Fiscal 2021–2026 · USDThe full income statement, balance sheet and cash flow for each of these years — every figure traceable to its filing — is on the Financials tab with a free account.
Who owns Marathon Bancorp, Inc. — and what changed
Funds as of 2026Q2 · superinvestors as of 2026-06-30
Largest fund holders · Marathon Bancorp, Inc.’s weight in each
Fund ownership is a floor, not a census — pensions, insurers and people holding shares directly are not visible here.
Fund ownership counts N-PORT filers only, so it is a floor rather than a census — pensions, insurers and direct holders are not visible here, and the remainder is not “held by individuals”.
Could not be determined for this company: bond issues.
Every fund and institutional holder, quarter by quarter, is on the Ownership tab with a free account.
Recent filings
All filings →Each filing opens into its own statements and disclosures here.
Put this business in context.
Compare this company with peers, find it in your funds and follow its financial history with your connected AI:
- “How do Marathon Bancorp, Inc. and its peers compare on margins and cash generation over ten years?”
- “Where did five years of Marathon Bancorp, Inc.'s earnings go — cash, debt, buybacks, reinvestment?”
- “What changed in Marathon Bancorp, Inc.'s last four quarterly filings that the numbers alone won't show?”