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Marathon Bancorp, Inc. /MD/ (MBBC)
NASDAQ: MBBC · Real-Time Price · USD
Financial Services · Banks - Regional
14.67+0.00 (+0.00%)
Market cap
$44.2M
Website
Insider Score
––Not scored
MBBC Insider Score
Insiders here have filed 2 Form 4s in the last 90 days, but all of them are share awards, grants or other non-market transactions. Those are compensation, not a decision to buy, so they are not scored.
MBBC Stock Insider Trading Activity
MBBC stock’s insider trading shows 14 purchases for an estimated $91.58K by company insiders over the last 6 months.
Not enough price history.
Insider Trading Activity (Form 4 Filings)
An insider trade occurs when an individual that has non-public information about a company buys or sells shares of that company’s stock. Examples of insiders include a company’s executive officers (CEO, CFO, COO), its board of directors, and its major shareholders. Insiders are required to submit their trading activity to the SEC through Form 4 filings.
| Insider | Action | Shares | Avg Cost | Total | Δ Holdings | Held After | Date | Grade | Form 4 |
|---|---|---|---|---|---|---|---|---|---|
| Spatz Nora Other | Option exercise | 1,201 | $8.13 | $9.76K | 4.4% | 28,297 | Sep 18, 2026 | — | Form 4 |
| Spatz Nora Other | Option exercise | 962 | $6.48 | $6.23K | 3.4% | 29,259 | Sep 18, 2026 | — | Form 4 |
| Knopf Michelle COO | Tax withheld | 225 | $15.49 | $3.49K | 2.6% | 8,557 | Jun 28, 2026 | — | Form 4 |
| Spatz Nora Other | Tax withheld | 503 | $15.49 | $7.79K | 1.8% | 27,096 | Jun 28, 2026 | — | Form 4 |
| Zillges Nicholas W CEO | Tax withheld | 1,269 | $15.49 | $19.66K | 2.2% | 55,936 | Jun 28, 2026 | — | Form 4 |
| Selting-Buchberger Joy CFO | Tax withheld | 522 | $15.49 | $8.09K | 9.9% | 4,760 | Jun 28, 2026 | — | Form 4 |
| Cornish Terry Other | Tax withheld | 247 | $15.49 | $3.83K | 3.8% | 6,256 | Jun 28, 2026 | — | Form 4 |
| Zillges Nicholas W CEO | Buy | 970 | $15.00 | $14.55K | 1.7% | 57,205 | Jun 16, 2026 | DCluster BuyCEO Buy | Form 4 |
| Spatz Nora Other | Award | 6,450 | — | — | 30.5% | 27,599 | Jun 15, 2026 | — | Form 4 |
| Werth Ann M Director | Award | 3,386 | — | — | 66.2% | 8,501 | Jun 15, 2026 | — | Form 4 |
| Wimmer Timothy R Director | Award | 3,386 | — | — | 113% | 6,384 | Jun 15, 2026 | — | Form 4 |
| Grimm Thomas L Director | Award | 3,386 | — | — | 113% | 6,384 | Jun 15, 2026 | — | Form 4 |
| Zientara Amy Director | Award | 3,386 | — | — | 14.3% | 27,110 | Jun 15, 2026 | — | Form 4 |
| Cornish Terry Other | Award | 3,500 | — | — | 117% | 6,503 | Jun 15, 2026 | — | Form 4 |
| Knopf Michelle COO | Award | 5,450 | — | — | 164% | 8,782 | Jun 15, 2026 | — | Form 4 |
| Zillges Nicholas W CEO | Award | 16,934 | — | — | 43.1% | 56,235 | Jun 15, 2026 | — | Form 4 |
| Zillges Nicholas W CEO | Buy | 170 | $14.75 | $2.51K | 0.3% | 51,160 | Jun 10, 2026 | DCluster BuyCEO Buy | Form 4 |
| Cornish Terry Other | Buy | 219 | $14.75 | $3.23K | 0.8% | 27,205 | Jun 10, 2026 | FCluster BuyExec Buy | Form 4 |
| Spatz Nora Other | Buy | 602 | $14.75 | $8.88K | 1.5% | 39,520 | Jun 10, 2026 | FCluster BuyExec Buy | Form 4 |
| Knopf Michelle COO | Buy | 164 | $14.75 | $2.42K | 0.9% | 19,339 | Jun 10, 2026 | DCluster BuyExec Buy | Form 4 |
| Spatz Nora Other | Buy | 1,904 | $14.50 | $27.61K | 5.1% | 38,918 | Jun 9, 2026 | CCluster BuyExec Buy | Form 4 |
| Zillges Nicholas W CEO | Buy | 537 | $14.50 | $7.79K | 1.1% | 50,990 | Jun 9, 2026 | DCluster BuyCEO Buy | Form 4 |
| Cornish Terry Other | Buy | 693 | $14.50 | $10.05K | 2.6% | 26,986 | Jun 9, 2026 | DCluster BuyExec Buy | Form 4 |
| Knopf Michelle COO | Buy | 519 | $14.50 | $7.53K | 2.8% | 19,175 | Jun 9, 2026 | CCluster BuyExec Buy | Form 4 |
| Spatz Nora Other | Buy | 197 | $14.24 | $2.81K | 0.5% | 37,014 | Jun 8, 2026 | DCluster BuyExec Buy | Form 4 |
| Knopf Michelle COO | Buy | 54 | $14.24 | $768.96 | 0.3% | 18,656 | Jun 8, 2026 | DCluster BuyExec Buy | Form 4 |
| Zillges Nicholas W CEO | Buy | 55 | $14.24 | $783.2 | 0.1% | 50,453 | Jun 8, 2026 | DCluster BuyCEO Buy | Form 4 |
| Cornish Terry Other | Buy | 71 | $14.24 | $1.01K | 0.3% | 26,293 | Jun 8, 2026 | DCluster BuyExec Buy | Form 4 |
| Cornish Terry Other | Buy | 116 | $14.25 | $1.65K | 0.4% | 26,222 | Jun 5, 2026 | DCluster BuyExec Buy | Form 4 |
What these mean— the action is the SEC’s own Form 4 transaction code. Only a buy or a sell is an open-market trade; the rest are transfers, awards and exercises, which is why they carry no price.
- Buy (P) — Open-market or private purchase
- Award (A) — Grant or award from the company, not a purchase
- Tax withheld (F) — Shares withheld to pay tax or an exercise price
- Option exercise (M) — Exercise or conversion of an exempt derivative
Disclaimer — Informational only — not investment advice. Insider transaction data is sourced from SEC Form 4 filings; market data from public feeds and may be delayed. The Insider Score is a proprietary score for research purposes and does not predict future performance. Always do your own research.