🕵️ Marathon Bancorp, Inc. /MD/ ($MBBC)
SEC insider & ownership activity, last 12 months · CIK 1835385 · every row links its SEC filing
Over the last 12 months insiders bought $146K with no open-market selling against it. Nicholas W. Zillges bought $57K (Nov–Jun). Marathon Bank 401(K) PLAN Trust added 6.6% → 7.3%. No red-flag 8-Ks in the window.
Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
4 buyers, $146K (27 lots) · 0 sellers, $0 (0 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Nicholas W. Zillges | 9 | $57K | 0 | – | Jun 16, 2026 |
| Spatz Nora | 6 | $55K | 0 | – | Jun 10, 2026 |
| Cornish Terry | 6 | $20K | 0 | – | Jun 10, 2026 |
| Knopf Michelle | 6 | $15K | 0 | – | Jun 10, 2026 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| Marathon Bank Employee Stock Ownership PLAN Trust | 8.7% | 13G | Sep 2, 2025 | filing ↗ | |
| Marathon Bank 401(K) PLAN Trust | 7.3% | 13G | Jul 1, 2026 | filing ↗ | |
| Alliancebernstein L.p. | 5.2% | 13G | Feb 17, 2026 | filing ↗ |
Planned insider sales (Form 144)
No sale notices filed in the last 12 months.
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Officer/director changes (5.02) | May 28, 2026 | filing ↗ |
| Shareholder vote (5.07) | May 28, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 28, 2026 | filing ↗ |
| Other events (8.01) | Apr 24, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Apr 24, 2026 | filing ↗ |
| Shareholder vote (5.07) | Nov 18, 2025 | filing ↗ |