Marathon Bancorp, Inc. /MD/ SEC filings MBBC
Marathon Bancorp, Inc. /MD/ has 232 filings in SEC EDGAR's recent list, going back to Dec 11, 2020. Its latest annual report, Form ARS, was filed on Oct 13, 2026 for the period ended Jun 30, 2026. The latest quarterly report (Form 10-Q) was filed on May 13, 2026, covering the quarter ended Mar 31, 2026. The most recent current report (Form 8-K) was filed on Oct 1, 2026 (officer or director change). The company's fiscal year ends on June 30.
| Form | Description | Filed | Period |
|---|---|---|---|
| 4 | Insider transaction | Sep 18, 2026 | Sep 18, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jul 1, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Jul 1, 2026 | — |
| 4 | Insider transaction | Jun 30, 2026 | Jun 28, 2026 |
| 4 | Insider transaction | Jun 30, 2026 | Jun 28, 2026 |
| 4 | Insider transaction | Jun 30, 2026 | Jun 28, 2026 |
| 4 | Insider transaction | Jun 30, 2026 | Jun 28, 2026 |
| 4 | Insider transaction | Jun 30, 2026 | Jun 28, 2026 |
| 4 | Insider transaction | Jun 17, 2026 | Jun 16, 2026 |
| 4 | Insider transaction | Jun 16, 2026 | Jun 15, 2026 |
| 4 | Insider transaction | Jun 16, 2026 | Jun 15, 2026 |
| 4 | Insider transaction | Jun 16, 2026 | Jun 15, 2026 |
| 4 | Insider transaction | Jun 16, 2026 | Jun 15, 2026 |
| 4 | Insider transaction | Jun 16, 2026 | Jun 15, 2026 |
| 4 | Insider transaction | Jun 16, 2026 | Jun 15, 2026 |
| 4 | Insider transaction | Jun 16, 2026 | Jun 15, 2026 |
| 4 | Insider transaction | Jun 16, 2026 | Jun 15, 2026 |
| 4 | Insider transaction | Jun 11, 2026 | Jun 3, 2026 |
| 4 | Insider transaction | Jun 11, 2026 | Jun 3, 2026 |
| 4 | Insider transaction | Jun 11, 2026 | Jun 3, 2026 |
| 4 | Insider transaction | Jun 11, 2026 | Jun 3, 2026 |
| 4 | Insider transaction | Jun 5, 2026 | Jun 3, 2026 |
| 4 | Insider transaction | Jun 5, 2026 | Jun 3, 2026 |
| 4 | Insider transaction | Jun 5, 2026 | Jun 3, 2026 |
| 4 | Insider transaction | Jun 5, 2026 | Jun 3, 2026 |
| 4 | Insider transaction | Jun 5, 2026 | Jun 3, 2026 |
| 4 | Insider transaction | May 19, 2026 | May 16, 2026 |
| 4 | Insider transaction | May 19, 2026 | May 16, 2026 |
| 4 | Insider transaction | May 19, 2026 | May 16, 2026 |
| 4 | Insider transaction | May 19, 2026 | May 16, 2026 |
| 4 | Insider transaction | May 6, 2026 | May 5, 2026 |
| 4 | Insider transaction | Mar 20, 2026 | Mar 20, 2026 |
| 4 | Insider transaction | Mar 18, 2026 | Mar 18, 2026 |
| 4 | Insider transaction | Feb 24, 2026 | Feb 23, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Feb 17, 2026 | — |
| 4 | Insider transaction | Dec 3, 2025 | Dec 1, 2025 |
| 4 | Insider transaction | Dec 3, 2025 | Dec 1, 2025 |
| 4 | Insider transaction | Dec 3, 2025 | Dec 1, 2025 |
| 4 | Insider transaction | Nov 28, 2025 | Nov 26, 2025 |
| 4 | Insider transaction | Nov 14, 2025 | Nov 13, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Sep 2, 2025 | — |
| 4/A | Form 4/a | Jul 2, 2025 | Jun 28, 2025 |
| 4 | Insider transaction | Jul 1, 2025 | Jun 28, 2025 |
| 4 | Insider transaction | Jul 1, 2025 | Jun 28, 2025 |
| 4 | Insider transaction | Jul 1, 2025 | Jun 28, 2025 |
| 4 | Insider transaction | Jul 1, 2025 | Jun 28, 2025 |
| 4 | Insider transaction | Jul 1, 2025 | Jun 28, 2025 |
| 4 | Insider transaction | Jun 16, 2025 | Jun 13, 2025 |
| 4 | Insider transaction | Jun 3, 2025 | May 29, 2025 |
| 4 | Insider transaction | Jun 3, 2025 | May 29, 2025 |
| 4 | Insider transaction | May 20, 2025 | May 16, 2025 |
| 4 | Insider transaction | May 20, 2025 | May 16, 2025 |
| 4 | Insider transaction | May 20, 2025 | May 16, 2025 |
| 4 | Insider transaction | May 20, 2025 | May 16, 2025 |
| 4 | Insider transaction | May 20, 2025 | May 16, 2025 |
| 4 | Insider transaction | Apr 22, 2025 | Apr 21, 2025 |
| 4 | Insider transaction | Apr 22, 2025 | Apr 21, 2025 |
| 4 | Insider transaction | Apr 22, 2025 | Apr 21, 2025 |
| 4 | Insider transaction | Apr 22, 2025 | Apr 21, 2025 |
| 4 | Insider transaction | Apr 22, 2025 | Apr 21, 2025 |
| 4 | Insider transaction | Apr 22, 2025 | Apr 21, 2025 |
| 4 | Insider transaction | Apr 22, 2025 | Apr 21, 2025 |
| 4 | Insider transaction | Apr 22, 2025 | Apr 21, 2025 |
| 4 | Insider transaction | Apr 22, 2025 | Apr 21, 2025 |
| 4 | Insider transaction | Jul 2, 2024 | May 16, 2024 |
| 4 | Insider transaction | Jul 2, 2024 | May 16, 2024 |
| 4 | Insider transaction | Jul 2, 2024 | Jun 28, 2024 |
| 4 | Insider transaction | Jul 2, 2024 | May 16, 2024 |
| 4 | Insider transaction | Jul 2, 2024 | May 16, 2024 |
| 4 | Insider transaction | May 28, 2024 | May 23, 2024 |
| 4 | Insider transaction | Mar 7, 2024 | Mar 6, 2024 |
| 4 | Insider transaction | Dec 5, 2023 | Nov 30, 2023 |
| 4 | Insider transaction | Dec 5, 2023 | Nov 30, 2023 |
| 4 | Insider transaction | Dec 5, 2023 | Nov 30, 2023 |
| 4 | Insider transaction | Dec 5, 2023 | Nov 30, 2023 |
| 4 | Insider transaction | Nov 17, 2023 | Nov 16, 2023 |
| 4 | Insider transaction | Oct 4, 2023 | Jun 28, 2023 |
| 4 | Insider transaction | Oct 4, 2023 | Jun 28, 2023 |
| 4 | Insider transaction | Oct 4, 2023 | Jun 28, 2023 |
| 4 | Insider transaction | Oct 4, 2023 | Jun 28, 2023 |
| 4 | Insider transaction | Oct 4, 2023 | Jun 28, 2023 |
| 4/A | Form 4/a | Jul 6, 2023 | May 16, 2023 |
| 4/A | Form 4/a | Jul 6, 2023 | May 16, 2023 |
| 4/A | Form 4/a | Jul 6, 2023 | May 16, 2023 |
| 4/A | Form 4/a | Jul 6, 2023 | May 16, 2023 |
| 4/A | Form 4/a | Jul 6, 2023 | May 16, 2023 |
| 4 | Insider transaction | Jun 13, 2023 | Jun 7, 2023 |
| 4 | Insider transaction | Jun 13, 2023 | Jun 7, 2023 |
| 4 | Insider transaction | Jun 13, 2023 | Jun 7, 2023 |
| 4 | Insider transaction | Jun 13, 2023 | Jun 7, 2023 |
| 4 | Insider transaction | May 22, 2023 | May 18, 2023 |
| 4 | Insider transaction | May 22, 2023 | May 18, 2023 |
| 4 | Insider transaction | May 18, 2023 | May 16, 2023 |
| 4 | Insider transaction | May 18, 2023 | May 16, 2023 |
| 4 | Insider transaction | May 18, 2023 | May 16, 2023 |
| 4 | Insider transaction | May 18, 2023 | May 16, 2023 |
| 4 | Insider transaction | May 18, 2023 | May 16, 2023 |
| 4 | Insider transaction | May 18, 2023 | May 16, 2023 |
| 4 | Insider transaction | May 18, 2023 | May 16, 2023 |
| 4 | Insider transaction | May 18, 2023 | May 16, 2023 |
| 4 | Insider transaction | May 18, 2023 | May 16, 2023 |
| 4 | Insider transaction | Dec 6, 2022 | Dec 2, 2022 |
| 4 | Insider transaction | Dec 6, 2022 | Dec 2, 2022 |
| 4 | Insider transaction | Dec 6, 2022 | Dec 2, 2022 |
| 4 | Insider transaction | Dec 6, 2022 | Dec 2, 2022 |
| 4 | Insider transaction | Jul 8, 2022 | Jun 28, 2022 |
| 3 | Initial insider ownership | Jul 8, 2022 | Jun 28, 2022 |
| 4 | Insider transaction | Jun 29, 2022 | Jun 28, 2022 |
| 4 | Insider transaction | Jun 29, 2022 | Jun 28, 2022 |
| 4 | Insider transaction | Jun 29, 2022 | Jun 28, 2022 |
| 4 | Insider transaction | Jun 29, 2022 | Jun 28, 2022 |
| 4 | Insider transaction | Jun 29, 2022 | Jun 28, 2022 |
| 4 | Insider transaction | Jun 29, 2022 | Jun 28, 2022 |
| 4 | Insider transaction | Jun 29, 2022 | Jun 28, 2022 |
| 4 | Insider transaction | Jun 29, 2022 | Jun 28, 2022 |
| 4 | Insider transaction | Jun 29, 2022 | Jun 28, 2022 |
| 4 | Insider transaction | Jun 1, 2022 | May 27, 2022 |
| 4 | Insider transaction | Jun 1, 2022 | May 27, 2022 |
| 4 | Insider transaction | Jun 1, 2022 | May 27, 2022 |
| 4 | Insider transaction | Jun 1, 2022 | May 27, 2022 |
| 4 | Insider transaction | May 18, 2022 | May 17, 2022 |
| 4 | Insider transaction | Dec 10, 2021 | Dec 8, 2021 |
| 4 | Insider transaction | Dec 10, 2021 | Dec 8, 2021 |
| 4 | Insider transaction | Dec 10, 2021 | Dec 8, 2021 |
| 3/A | Form 3/a | Dec 10, 2021 | Apr 14, 2021 |
| 3/A | Form 3/a | Dec 10, 2021 | Apr 14, 2021 |
| 4 | Insider transaction | May 27, 2021 | May 26, 2021 |
| SC 13D | Ownership over 5% (active) | Apr 15, 2021 | — |
| 3 | Initial insider ownership | Apr 14, 2021 | Apr 14, 2021 |
| 3 | Initial insider ownership | Apr 14, 2021 | Apr 14, 2021 |
| 3 | Initial insider ownership | Apr 14, 2021 | Apr 14, 2021 |
| 3 | Initial insider ownership | Apr 14, 2021 | Apr 14, 2021 |
| 3 | Initial insider ownership | Apr 14, 2021 | Apr 14, 2021 |
| 3 | Initial insider ownership | Apr 14, 2021 | Apr 14, 2021 |
| 3 | Initial insider ownership | Apr 14, 2021 | Apr 14, 2021 |
| 3 | Initial insider ownership | Apr 14, 2021 | Apr 14, 2021 |
| 3 | Initial insider ownership | Apr 14, 2021 | Apr 14, 2021 |
| 3 | Initial insider ownership | Apr 14, 2021 | Apr 14, 2021 |
Showing 138 filings. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Savings Institutions, Not Federally Chartered (SIC 6036)
- Listed as
- MBBC (Nasdaq)
- Fiscal year ends
- June 30
- Headquarters
- Wausau, WI
- SEC filer status
- Non-accelerated filer, Smaller reporting company
- SEC CIK
- 1835385
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All 40 Savings Institutions, Not Federally Chartered companies
Source: SEC EDGAR filings. This is company-reported data, not investment advice.