Marathon Bancorp, Inc. /MD/ (MBBC) stock: insider trades, news & valuation
Strong buyingShare price and insider trades
Marathon Bancorp, Inc. /MD/ insider trading at a glance (Oct 9, 2026): in the past 12 months, 3 insiders bought $79K and 0 sold $0 of MBBC stock on the open market, including a cluster buy that began Jun 9, 2026.
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MBBC insider buying and selling by quarter
Open-market purchases (green, above the line) and sales (red, below), by trade date.
| Quarter | Bought | Purchases | Sold | Sales |
|---|---|---|---|---|
| Q4 2026 | — | 0 | — | 0 |
| Q3 2026 | — | 0 | — | 0 |
| Q2 2026 | $120K | 25 | — | 0 |
| Q1 2026 | — | 0 | — | 0 |
| Q4 2025 | $27K | 2 | — | 0 |
Valuation, profit and volume
Summary
Over the past 12 months, 3 Marathon Bancorp, Inc. /MD/ insiders reported open-market purchases totaling $79K, while 0 insiders reported sales totaling $0. The most recent cluster buy began on Jun 9, 2026, when 3 insiders bought a combined $52K. Among insiders with enough purchase history to measure, Nicholas W Zillges (CEO, President) has the highest Insider Score at 76.
Insider transactions
Open-market purchases and sales.
| Filed | Insider | Type | Shares | Price | Value | Since | Score |
|---|---|---|---|---|---|---|---|
| Jun 17SEC | Nicholas W ZillgesCEO, President | Buy | 97057,205 held (+2%) | $15.00 | $15K | +0.6% | 76 |
| Jun 11SEC | Nora SpatzEvp And Cao | Buy | 1,90438,918 held (+5%) | $14.50 | $28K | +4.1% | — |
| Jun 11SEC | Terry CornishSvp And Cco | Buy | 69326,986 held (+3%) | $14.50 | $10K | +4.1% | — |
| Jun 11SEC | Nora SpatzEvp And Cao | Buy | 72236,423 held (+2%) | $13.75 | $10K | +9.8% | — |
| Jun 11SEC | Nora SpatzEvp And Cao | Buy | 60239,520 held (+2%) | $14.75 | $9K | +2.3% | — |
| Jun 11SEC | Nicholas W ZillgesCEO, President | Buy | 53750,990 held (+1%) | $14.50 | $8K | +4.1% | 76 |
| Jun 11SEC | Michelle KnopfCOO | Buy | 51919,175 held (+3%) | $14.50 | $8K | +4.1% | — |
| Jun 11SEC | Nora SpatzEvp And Cao | Buy | 32036,817 held (+1%) | $14.25 | $5K | +5.9% | — |
| Jun 11SEC | Terry CornishSvp And Cco | Buy | 26326,079 held (+1%) | $13.75 | $4K | +9.8% | — |
| Jun 11SEC | Terry CornishSvp And Cco | Buy | 21927,205 held (+1%) | $14.75 | $3K | +2.3% | — |
| Jun 11SEC | Nora SpatzEvp And Cao | Buy | 19737,014 held (+1%) | $14.24 | $3K | +6.0% | — |
| Jun 11SEC | Nicholas W ZillgesCEO, President | Buy | 20350,287 held (+0%) | $13.75 | $3K | +9.8% | 76 |
| Jun 11SEC | Michelle KnopfCOO | Buy | 19718,495 held (+1%) | $13.75 | $3K | +9.8% | — |
| Jun 11SEC | Nicholas W ZillgesCEO, President | Buy | 17051,160 held (+0%) | $14.75 | $3K | +2.3% | 76 |
| Jun 11SEC | Michelle KnopfCOO | Buy | 16419,339 held (+1%) | $14.75 | $2K | +2.3% | — |
| Jun 11SEC | Terry CornishSvp And Cco | Buy | 11626,222 held (+0%) | $14.25 | $2K | +5.9% | — |
| Jun 11SEC | Nicholas W ZillgesCEO, President | Buy | 9050,398 held (+0%) | $14.25 | $1K | +5.9% | 76 |
| Jun 11SEC | Michelle KnopfCOO | Buy | 8718,602 held (+0%) | $14.25 | $1K | +5.9% | — |
| Jun 11SEC | Nora SpatzEvp And Cao | Buy | 7434,497 held (+0%) | $13.77 | $1K | +9.6% | — |
| Jun 11SEC | Terry CornishSvp And Cco | Buy | 7126,293 held (+0%) | $14.24 | $1K | +6.0% | — |
| Jun 11SEC | Nicholas W ZillgesCEO, President | Buy | 5550,453 held (+0%) | $14.24 | $783 | +6.0% | 76 |
| Jun 11SEC | Michelle KnopfCOO | Buy | 5418,656 held (+0%) | $14.24 | $769 | +6.0% | — |
| Jun 11SEC | Terry CornishSvp And Cco | Buy | 2726,106 held (+0%) | $13.77 | $372 | +9.6% | — |
| Jun 11SEC | Nicholas W ZillgesCEO, President | Buy | 2150,308 held (+0%) | $13.77 | $289 | +9.6% | 76 |
| Jun 11SEC | Michelle KnopfCOO | Buy | 2018,515 held (+0%) | $13.77 | $275 | +9.6% | — |
| Nov 28SEC | Nicholas W ZillgesCEO, President | Buy | 1,07534,803 held (+3%) | $11.37 | $12K | +32.8% | 76 |
| Nov 14SEC | Nicholas W ZillgesCEO, President | Buy | 1,32533,728 held (+4%) | $11.00 | $15K | +37.2% | 76 |
Insiders at Marathon Bancorp, Inc. /MD/
| Insider | Bought | Sold | Last filing | Score |
|---|---|---|---|---|
| Nicholas W ZillgesCEO, President | $57K | — | Jun 17, 2026 | 76 |
| Nora SpatzEvp And Cao | $55K | — | Jun 11, 2026 | — |
| Terry CornishSvp And Cco | $20K | — | Jun 11, 2026 | — |
| Michelle KnopfCOO | $15K | — | Jun 11, 2026 | — |
MBBC stock: common questions
Are Marathon Bancorp, Inc. /MD/ insiders buying MBBC stock?
In the past 12 months, 3 insiders reported open-market purchases of MBBC worth $79K. The latest was CEO, President Nicholas W Zillges bought $15K of MBBC at $15.00.
Are Marathon Bancorp, Inc. /MD/ insiders selling MBBC stock?
0 insiders reported sales worth $0 over the same period.
Where does this data come from?
Every transaction comes from Form 4 filings that insiders must submit to the SEC within two business days of a trade. We pull them from SEC EDGAR every night.
What is MBBC's 52-week range?
Over the past year MBBC has traded between $10.50 and $15.49. It last closed at $15.10 on Oct 9, 2026.