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MBBC insider trading

Marathon Bancorp, Inc. /MD/ — open-market insider buys and $1M+ sells from SEC Forms 3, 4 and 5.
Insider buys · 24 mo
9
Bought · 24 mo
$156k
Buys · last 90 days
5 · $120k
Most recent buy
2026-06-17

Cluster buy detected

4 insiders bought MBBC within a short window (2026-06-03→2026-06-16), $120k in total — cluster score 68/100. Members see the buyers, the score breakdown and the chart.

See the cluster

Recent insider filings

FiledInsiderTypeSharesPriceValue
2026-06-17Zillges Nicholas Wcluster
President and CEO
Bought970$15.00$15k
2026-06-11Cornish Terrycluster
SVP and CCO
Bought1,389$14.35$20k
2026-06-11Knopf Michellecluster
EVP and COO
Bought1,041$14.35$15k
2026-06-11Zillges Nicholas Wcluster
President and CEO
Bought1,076$14.35$15k
2026-06-11Spatz Noracluster
EVP and CAO
Bought3,819$14.35$55k
2025-11-28Zillges Nicholas W
President and CEO
Bought1,075$11.37$12k
2025-11-14Zillges Nicholas W
President and CEO
Bought1,325$11.00$15k
2025-06-16Zillges Nicholas W
President and CEO
Bought500$9.99$5k
2025-05-20Zillges Nicholas W
President and CEO
Bought500$10.07$5k

Most active insider buyers

InsiderRoleBuysTotal bought
Zillges Nicholas WPresident and CEO6$67k
Spatz NoraEVP and CAO1$55k
Cornish TerrySVP and CCO1$20k
Knopf MichelleEVP and COO1$15k

See MBBC on the chart

Every insider buy and sell for MBBC plotted on the price, the full two-year history, cluster scores and daily updates — in the members area, $29/month. A free quarterly sample of the whole dataset needs no account.

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Data from the SEC EDGAR ownership filings, refreshed daily. Only open-market purchases (transaction code P) and sales of $1M or more are shown; grants, option exercises and tax withholding are excluded because they run on schedules set years earlier. Not investment advice.