Marathon Bancorp, Inc.
MBBC- Exchange
- Nasdaq
- Industry
- Savings Institutions, Not Federally Chartered
- SEC CIK
- 0001835385
No open-market purchases or sales by Marathon Bancorp, Inc. insiders were filed in the last 90 days; 12 institutions reported holding it in 13F filings for Q2 2026, worth $11.1M in total; no superinvestor holds it.
Key figures
- Insider buysOpen market, last 90 days
- 0
- Insider sellsOpen market, last 90 days
- 0
- 13F holdersQ2 2026, +3 vs. previous quarter
- 12
- 13F valueReported value at the end of Q2 2026
- $11.1M
- Superinvestors holdingAt the end of Q2 2026
- 0
Price chart
Superinvestors holding MBBC, Q2 2026
No superinvestor reported holding MBBC at the end of Q2 2026.
Latest insider trades
Open-market purchases and sales by Marathon Bancorp, Inc. insiders from Form 4, newest first.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Jun 17, 2026 (view filing) | Jun 16 | 1 day | Zillges Nicholas WPresident and CEO | PPurchase | +970 | $15.00 | +$14.6K | +1.7%57.2K after | |
| Jun 11, 2026 (view filing) | Jun 3-10 | 8 daysLate | Cornish TerrySVP and CCO | PPurchase | +1.39K | $14.35 | +$19.9K | +5.4%27.2K after | 6 lots |
| Jun 11, 2026 (view filing) | Jun 3-10 | 8 daysLate | Knopf MichelleEVP and COO | PPurchase | +1.04K | $14.35 | +$14.9K | +5.7%19.3K after | 6 lots |
| Jun 11, 2026 (view filing) | Jun 3-10 | 8 daysLate | Zillges Nicholas WPresident and CEO | PPurchase | +1.08K | $14.35 | +$15.4K | +2.1%51.2K after | 6 lots |
| Jun 11, 2026 (view filing) | Jun 3-10 | 8 daysLate | Spatz NoraEVP and CAO | PPurchase | +3.82K | $14.35 | +$54.8K | +10.7%39.5K after | 6 lots |
| Nov 28, 2025 (view filing) | Nov 26 | 2 days | Zillges Nicholas WPresident and CEO | PPurchase | +1.07K | $11.37 | +$12.2K | +3.2%34.8K after | |
| Nov 14, 2025 (view filing) | Nov 13 | 1 day | Zillges Nicholas WPresident and CEO | PPurchase | +1.32K | $11.00 | +$14.6K | +4.1%33.7K after | |
| Jun 16, 2025 (view filing) | Jun 13 | 3 days | Zillges Nicholas WPresident and CEO | PPurchase | +500 | $9.99 | +$5.00K | +1.5%33.6K after | |
| May 20, 2025 (view filing) | May 16 | 4 days | Zillges Nicholas WPresident and CEO | PPurchase | +500 | $10.07 | +$5.04K | +1.5%33.1K after | |
| Mar 7, 2024 (view filing) | Mar 6 | 1 day | Zillges Nicholas WPresident and CEO | PPurchase | +100 | $9.51 | +$951 | +0.5%19.8K after |
Top 10 13F holders, Q2 2026
The largest institutional positions in Marathon Bancorp, Inc. at the end of Q2 2026; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Raffles Associates LP | 215,328 | $3.29M | 1.44% | +107,664+100.0% | Added |
| Maltese Capital Management LLC | 145,298 | $2.22M | 0.40% | +198+0.1% | Added |
| Alliancebernstein L.P. | 153,238 | $2.07M | 0.00% | 00.0% | Unchanged |
| Vanguard Capital Management LLC | 76,027 | $1.16M | 0.00% | −571−0.7% | Reduced |
| Minerva Advisors LLC | 55,750 | $851.9K | 0.54% | −3,226−5.5% | Reduced |
| KLCM Advisors, Inc. | 34,320 | $524.4K | 0.04% | 00.0% | Unchanged |
| Stilwell Value LLC | 20,000 | $305.6K | 0.18% | 00.0% | Unchanged |
| Vanguard Fiduciary Trust Co | 11,514 | $175.9K | 0.00% | −4,920−29.9% | Reduced |
| Citadel Advisors LLC | 10,984 | $167.8K | 0.00% | +10,984 | New |
| Geode Capital Management, LLC | 10,871 | $166.1K | 0.00% | +10,871 | New |