Marathon Bancorp, Inc. Financials, FR Y-9SP Data and Filings
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Marathon Bancorp, Inc. is a bank holding company based in Wisconsin with $261.1M in total consolidated assets as of June 30, 2026, on the consolidated assets memorandum line of its FR Y-9SP, a parent-company-only report. It owns 1 bank that files a call report: Marathon Bank ($261.1M in assets). Its shares trade under the ticker MBBC, and it files with the SEC under CIK 1835385: see its SEC filings and 8-K events.
Holding companies with less than $3 billion in assets file the semiannual FR Y-9SP rather than the quarterly FR Y-9C. The FR Y-9SP reports the parent company on its own, apart from one consolidated assets line, so deposits, loans, capital ratios and quarterly earnings sit in the bank's call report: see Marathon Bank.
Key Financials FR Y-9SP, as of June 30, 2026
- Total consolidated assets
- $261.1M
- Total assets, parent only
- $48.0M
- Total equity, parent only
- $48.0M
- Net income, parent only (first half of 2026)
- $845K
Source: FR Y-9SP for June 30, 2026. Total consolidated assets covers the company and every subsidiary (Memoranda item 1, BHSP8519). The parent-only lines count the holding company itself, which carries its banks as an investment, and its net income is year to date. Bank-level figures in the tables below come from each bank's own call report.
Bank Subsidiaries 1 bank held directly or through another holding company
| Bank | Charter | State | Total assets (call report) | Share of bank assets | Held through |
|---|---|---|---|---|---|
| Marathon Bank | State Savings Bank | WI | $261.1M | 100.0% | Held directly |
Questions About Marathon Bancorp, Inc.
What are Marathon Bancorp, Inc.'s total assets?
Marathon Bancorp, Inc. reported $261.1M in total consolidated assets as of June 30, 2026, the figure it entered on the consolidated assets memorandum line of its FR Y-9SP filing with the Federal Reserve. The FR Y-9SP is a parent-company-only report that carries no consolidated balance sheet, and holding companies with less than $3 billion in assets file it semiannually instead of the quarterly FR Y-9C.
How many banks does Marathon Bancorp, Inc. own?
Marathon Bancorp, Inc. owns 1 bank that files a call report: Marathon Bank.
Who owns Marathon Bank?
Marathon Bank is owned by Marathon Bancorp, Inc. The bank reported $261.1M in total assets on its latest call report.
Where can I find Marathon Bancorp, Inc.'s FR Y-9SP?
Marathon Bancorp, Inc. files the FR Y-9SP with the Federal Reserve every six months, as of June 30 and December 31. The reports are public on the FFIEC National Information Center under RSSD ID 5557518. This page summarizes the FR Y-9SP for Q2 2026.
Does Marathon Bancorp, Inc. file with the SEC?
Yes. Marathon Bancorp, Inc. files with the SEC under Central Index Key (CIK) 1835385 and trades under the ticker MBBC.
Filing Details fiscal year and SEC registration
- Fiscal year end
- June 30
- Ticker
- MBBC
- SEC CIK
- 1835385
- SEC filings
- Filings and 8-K events
Organization Map select + to expand a subsidiary's own holdings
- Marathon Bancorp, Inc.Holding Company WI RSSD 5557518$261.1M
- State Savings Bank WI RSSD 596978$261.1M
-
Direct Subsidiaries 1 active direct subsidiary
| Entity | Type | State | Total Assets | Share of bank subsidiary assets |
|---|---|---|---|---|
| Marathon Bank · 596978 | State Savings Bank | WI | $261.1M | 100.0% |
Share of bank subsidiary assets divides each bank's total assets by the combined assets of the bank subsidiaries listed. Nonbank subsidiaries are not counted.
Regulator records: FFIEC NIC profile (RSSD 5557518)