WAVEMAN · COMPANY

MBBC · Marathon Bancorp, Inc. /Md/

LIVE

TEAM-0.32% 13F +439META+3.01% 13F +2,694RCG-2.04% CLUSTERUTHR-4.03% 13F +425CRWV+4.49% 13F +693CRM+2.92% 13F +1,018CVNA-0.98% 13F +794TPL-0.71% 13F +444NET+4.32% 13F +710MSTR+17.56% 13F +526DELL+4.91% 13F +1,203CRWD+5.68% 13F +1,382ANET+1.22% 13F +1,323COIN+10.14% 13F +475TEAM-0.32% 13F +439META+3.01% 13F +2,694RCG-2.04% CLUSTERUTHR-4.03% 13F +425CRWV+4.49% 13F +693CRM+2.92% 13F +1,018CVNA-0.98% 13F +794TPL-0.71% 13F +444NET+4.32% 13F +710MSTR+17.56% 13F +526DELL+4.91% 13F +1,203CRWD+5.68% 13F +1,382ANET+1.22% 13F +1,323COIN+10.14% 13F +475

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MBBC

Name: Marathon Bancorp, Inc. /MD/ (MBBC) insider trading and ownership data
Creator: WaveMan
License: https://wave-man.com/terms

Marathon Bancorp, Inc. /MD/

BANKS · SAVINGS INSTITUTIONS, NOT FEDERALLY CHARTERED · CIK 0001835385

CLUSTER · 4 INSIDERSC-SUITE BUYING · 4☆ WATCH

INSIDER NET · 180D

$119.7K

open-market buys minus sells, Form 4 codes P and S

INSIDER BUYERS · 180D

CONGRESS BUYERS · 1Y

FUNDS ADDED · QTR

13F, latest reported quarter

REVENUE GROWTH

XBRL, annual

NET MARGIN

CONVERSIONS · 180D

codes C/M, not in net · $167.9K priced

SEVEN FACTS, RANKED AGAINST THE SECTOR · RANK IS NOT A FORECAST

INSIDERS

net +$119.7K over 180 days

+$89.9K over 90 days

more than 83% of Banks

CONGRESS

no member of Congress has reported trading it

FUNDS

6 funds added or opened last quarter

below 99% of Banks

REVENUE

no revenue reported in any filing

MARGIN

no margin: this company reports no revenue to divide by

BUYBACKS

$82.2K repurchased, FY to 2025-06-30

below 95% of Banks

SHORT

0.3% of shares outstanding short · 9.5 days to cover · settled 2026-07-31

below 79% of Banks

THE SITUATION · EVERY LINE IS ONE RULE OVER ONE DATASET

4 insiders independently bought a net $119.7K — no planned sales are queued against it.

The year, with the filings on it

Total return indexed to 100 over the last 12 months · every marker is a federal filing, placed at its date — hover any marker for the detail

TOTAL 12M RETURN +46.1%

+46.1%12M

INSIDER BUY

INDEXED RETURN, DIVIDEND-ADJUSTED — NOT A PRICE CHART · LARGE TRADES DRAWN FIRST WHEN A NAME FILES HEAVILY

Live price

Daily candles from TradingView, on their licence — no filings are marked on this one

WHY THIS NAME IS ON THE DESK

4 insiders reported buying shares.

The record shows a net $119.7K bought by insiders over 180 days, 6 funds added last quarter. Every figure is a federal filing, dated the day it became public.

Backtest this pattern Open the screener

Same sector, ranked by filing activity

Sector from the SEC's own SIC classification

UMBF BWFG PEBO PB FMBM GABC NEWT PCB DCOM ISBA WSBF JMSB

Insider transactions

Form 4 purchases and sales (codes P and S) — grants, option exercises and preferred conversions excluded

Over the last 180 days, Marathon Bancorp, Inc. /MD/ insiders bought a net $119.7K of stock across 37 Form 4 purchases and sales, with 4 insider(s) buying. Source: SEC Form 4 filings, as of 2026-09-05.

INSIDER

FILED

VALUE

Zillges Nicholas W

President and CEO

BUY

2026-06-16

970.0

$14.6K

Cornish Terry

SVP and CCO

BUY

2026-06-10

219.0

$3.2K

Knopf Michelle

EVP and COO

BUY

2026-06-10

164.0

$2.4K

Zillges Nicholas W

President and CEO

BUY

2026-06-10

170.0

$2.5K

Spatz Nora

EVP and CAO

BUY

2026-06-10

602.0

$8.9K

37 TRANSACTIONS ON RECORD

Showing the most recent few. Create a free account to see 32 more transactions on record, the cross-source screener and CSV export. We store only your email address, and there is no password to create.

Institutional holders

13F · holdings as of the latest quarter funds have reported

RAFFLES ASSOCIATES LP

215,328.0 sh

$3.3M

MALTESE CAPITAL MANAGEMENT LLC

145,298.0 sh

$2.2M

ALLIANCEBERNSTEIN L.P.

153,238.0 sh

$2.1M

VANGUARD CAPITAL MANAGEMENT LLC

76,027.0 sh

$1.2M

Minerva Advisors LLC

55,750.0 sh

$851.9K

SCHEDULE 13D/G

No 5%+ ownership filings

Nobody has crossed 5% with a filing obligation. Absence is a fact here, not missing data.

FORM 144

No planned-sale notices

No insider has notified an intent to sell. This is the panel to watch after a run-up.

Fund concentration

N-PORT · funds ranked by how much of THEMSELVES they put in this stock — the conviction number 13F cannot show

VANGUARD EXTENDED MARKET INDEX FUND

$286.8K POSITION · AS OF 2026-03-31

0.0%

Fidelity Extended Market Index Fund

$88.4K POSITION · AS OF 2026-02-28

0.0%

VANGUARD TOTAL STOCK MARKET INDEX FUND

$749.6K POSITION · AS OF 2026-03-31

0.0%

Fidelity Series Total Market Index Fund

$27.5K POSITION · AS OF 2026-02-28

0.0%

SEC N-PORT, MONTHLY WITH A ~60-DAY PUBLIC LAG · FUNDS ≥ $10M · % = SHARE OF THE FUND'S OWN BOOK

Fundamentals

Annual figures from XBRL filings · pick a past date to see them exactly as the market knew them then — restatements and all

	2025-06	2024-06	2023-06	2022-06
NET INCOME	$42.4K	$-187.0K	$1.7M	$1.3M
EPS (DILUTED)	0.02	-0.07	0.79	0.62
OPERATING CASH FLOW	$1.4M	$416.6K	$2.0M	$825.5K
BUYBACKS	$82.2K	$156.2K	—	—

SEC XBRL · FISCAL-YEAR PERIODS · AS KNOWN ON 2026-09-05 · NOBODY ELSE SHOWS FUNDAMENTALS AS OF A PAST DATE