SEC filings / CIK 1835385
MARATHON BANCORP, INC. /MD/
Savings institutions, state chartered, WI. 5 10-K filer-years in this dataset, the most recent for FY2025, filed Sep 26, 2025. Every figure below is as filed by the company and untouched: FinObservatory has not restated, rescaled or corrected anything, and a blank is a fact the filing does not tag, not a zero.
This is the SEC holding company, identified by its Central Index Key. It is not the insured bank subsidiary that appears in /banks and /deposits, which are FDIC call-report entities on a different consolidation. Nothing here should be compared line for line with those.
Held-to-maturity gap against reported equity
The fair value of the held-to-maturity book minus its carrying amount, divided by the stockholders’ equity the same filing reports. Years marked n/a are years in which the filing does not tag one of the three.
The gap is computable for 5 of this company’s 5 filings.
Source: SEC Financial Statement Data Sets, US Securities and Exchange Commission, Division of Economic and Risk Analysis. Facts as filed: uncleaned, unrestated, not audited by FinObservatory. Selection: consolidated USD balance-sheet instants at each filing's own period end, from this company's 10-K submissions with prevrpt = 0. Methodology
Filing history, as filed
| FY | Filed | Assets | Deposits | Equity | AOCI | HTM carrying | HTM fair value | Gap, % of equity | Custom facts |
|---|---|---|---|---|---|---|---|---|---|
| 2025p | Sep 26, 2025 | $238.8m | n/a | $45.7m | -$486k | $484k | $374k | -0.2% | 8.1% |
| 2024 | Sep 26, 2024 | $219.2m | n/a | $31.3m | -$753k | $510k | $394k | -0.4% | 7.2% |
| 2023 | Sep 20, 2023 | $238.8m | n/a | $31.3m | -$785k | $516k | $378k | -0.4% | 6.2% |
| 2022 | Sep 28, 2022 | $220.0m | n/a | $30.7m | -$369k | $532k | $419k | -0.4% | 8.1% |
| 2021 | Sep 28, 2021 | $213.6m | n/a | $29.8m | $121k | $709k | $770k | +0.2% | 7.2% |
ext marks a carrying amount tagged with a company-invented element. p marks FY2025, which the dataset’s filing window (closing Mar 31, 2026) leaves incomplete across filers. “Custom facts” is the share of that filing’s consolidated facts carrying a company-invented tag, in any unit.
Source: SEC Financial Statement Data Sets, US Securities and Exchange Commission, Division of Economic and Risk Analysis. Facts as filed: uncleaned, unrestated, not audited by FinObservatory. Selection: this company's 10-K submissions with prevrpt = 0, one per fiscal year by latest filed date; consolidated USD instants at each filing's period end. Dollar columns are raw US dollars. Methodology
What this page cannot tell you
- A blank in the held-to-maturity columns means the filing does not tag that fact on the consolidated face. It does not mean the company holds no held-to-maturity securities, and this dataset cannot distinguish the two.
- A held-to-maturity gap is not a realised loss. Held to maturity, the securities pay par. The gap measures how far the reported equity sits from a mark-to-market equity, which becomes a solvency question only if the book must be sold.
- AOCI is not the held-to-maturity mark. It bundles available-for-sale marks, hedge marks, pension and translation, net of tax. Do not add the two columns.
- Every value is as filed. A scale error, sign error or mis-tag by the company is reproduced here exactly as the company made it.
Pages exist for the 650 bank and thrift holding companies with at least one 10-K from FY2015 onward, out of 900 with a 10-K anywhere in the dataset.