Form4insider filings, from the source

Company · CIK 0001835385 · SIC 6036 — Savings Institutions, Not Federally Chartered · Nasdaq

Marathon Bancorp, Inc. /MD/ · MBBC

Insider activity reported against this company. All insider holders · On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted
Open-market buys & salesbuys $120k · 5sales $0 · 0net $120k
$10k$10k$100k$100k$1M$1MbuyssalesJun 2Jun 4Jun 7Jun 9Jun 12Jun 14Jun 17

Reported at this company — common stock

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Sep 18, 2026 MForm 4 →Sep 18, 4:17 pm EDTNora SpatzEVP and CAO2,163$7.40$15,99829,259—
Jun 28, 2026 FForm 4 →Jun 30, 5:41 pm EDTTerry CornishSVP and CCO247$15.49$3,8266,256—
Jun 28, 2026 FForm 4 →Jun 30, 5:37 pm EDTMichelle KnopfEVP and COO225$15.49$3,4858,557—
Jun 28, 2026 FForm 4 →Jun 30, 5:34 pm EDTNicholas W ZillgesPresident and CEO, Director1,269$15.49$19,65755,936—
Jun 28, 2026 FForm 4 →Jun 30, 5:33 pm EDTNora SpatzEVP and CAO503$15.49$7,79127,096—
Jun 28, 2026 FForm 4 →Jun 30, 5:31 pm EDTJoy Selting-BuchbergerSVP and CFO522$15.49$8,0864,760—
Jun 16, 2026 PForm 4 →Jun 17, 12:56 pm EDTNicholas W ZillgesPresident and CEO, Director970$15.00$14,55057,205+1.72%
Jun 15, 2026 AForm 4 →Jun 16, 4:49 pm EDTAnn M WerthDirector3,386——8,501—
Jun 15, 2026 AForm 4 →Jun 16, 4:49 pm EDTTimothy R WimmerDirector3,386——6,384—
Jun 15, 2026 AForm 4 →Jun 16, 4:48 pm EDTThomas L GrimmDirector3,386——6,384—
Jun 15, 2026 AForm 4 →Jun 16, 4:47 pm EDTAmy ZientaraDirector3,386——27,110—
Jun 15, 2026 AForm 4 →Jun 16, 4:47 pm EDTTerry CornishSVP and CCO3,500——6,503—
Jun 15, 2026 AForm 4 →Jun 16, 4:46 pm EDTMichelle KnopfEVP and COO5,450——8,782—
Jun 15, 2026 AForm 4 →Jun 16, 4:45 pm EDTNicholas W ZillgesPresident and CEO, Director16,934——56,235—
Jun 15, 2026 AForm 4 →Jun 16, 4:44 pm EDTNora SpatzEVP and CAO6,450——27,599—
Jun 3, 2026 PForm 4 →Jun 11, 6:08 pm EDTTerry CornishSVP and CCO1,389$14.35$19,93027,205+5.38% late
Jun 3, 2026 PForm 4 →Jun 11, 6:05 pm EDTMichelle KnopfEVP and COO1,041$14.35$14,93719,339+5.69% late
Jun 3, 2026 PForm 4 →Jun 11, 6:01 pm EDTNicholas W ZillgesPresident and CEO, Director1,076$14.35$15,44051,160+2.15% late
Jun 3, 2026 PForm 4 →Jun 11, 5:59 pm EDTNora SpatzEVP and CAO3,819$14.35$54,79739,520+10.7% late
Jun 3, 2026 MForm 4 →Jun 5, 12:49 pm EDTAmy ZientaraDirector4,498$7.80$35,08523,724—
Jun 3, 2026 MForm 4 →Jun 5, 12:47 pm EDTNora SpatzEVP and CAO1,200$8.13$9,75621,149—
Jun 3, 2026 MForm 4 →Jun 5, 12:47 pm EDTNicholas W ZillgesPresident and CEO, Director1,500$6.48$9,72039,301—
Jun 3, 2026 MForm 4 →Jun 5, 12:46 pm EDTThomas L GrimmDirector300$6.48$1,94422,294—
Jun 3, 2026 MForm 4 →Jun 5, 12:45 pm EDTTimothy R WimmerDirector4,498$7.80$35,08513,862—

Reported at this company — derivatives (options, RSUs, warrants)

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Sep 18, 2026 MForm 4 →Sep 18, 4:17 pm EDTNora SpatzEVP and CAO2,163——1,921—
Jun 15, 2026 AForm 4 →Jun 16, 4:49 pm EDTAnn M WerthDirector8,467——8,467—
Jun 15, 2026 AForm 4 →Jun 16, 4:49 pm EDTTimothy R WimmerDirector8,467——8,467—
Jun 15, 2026 AForm 4 →Jun 16, 4:48 pm EDTThomas L GrimmDirector8,467——8,467—
Jun 15, 2026 AForm 4 →Jun 16, 4:47 pm EDTAmy ZientaraDirector8,467——8,467—
Jun 15, 2026 AForm 4 →Jun 16, 4:47 pm EDTTerry CornishSVP and CCO7,000——7,000—
Jun 15, 2026 AForm 4 →Jun 16, 4:46 pm EDTMichelle KnopfEVP and COO10,000——10,000—
Jun 15, 2026 AForm 4 →Jun 16, 4:45 pm EDTNicholas W ZillgesPresident and CEO, Director42,335——42,335—
Jun 15, 2026 AForm 4 →Jun 16, 4:44 pm EDTNora SpatzEVP and CAO11,000——11,000—
Jun 3, 2026 MForm 4 →Jun 5, 12:49 pm EDTAmy ZientaraDirector4,498——600—
Jun 3, 2026 MForm 4 →Jun 5, 12:47 pm EDTNora SpatzEVP and CAO1,200——2,400—
Jun 3, 2026 MForm 4 →Jun 5, 12:47 pm EDTNicholas W ZillgesPresident and CEO, Director1,500——3,000—
Jun 3, 2026 MForm 4 →Jun 5, 12:46 pm EDTThomas L GrimmDirector300——600—
Jun 3, 2026 MForm 4 →Jun 5, 12:45 pm EDTTimothy R WimmerDirector4,498——600—