Marathon Bancorp, Inc. /MD/

MBBCCIK 0001835385 · Every Form 4 filed by insiders at this issuer. See financials →

Annual report (10-K)

Latest 10-K filed Sep 26, 2025. Sentiment + YoY language diff vs prior year. Read sections →

Signal:Mild positive shiftFull-doc fallback

Full filing:tone -0.0110Δ+0.001693% similar+265/-274 ¶

Sentiment via Loughran-McDonald lexicon · YoY diff via Jaccard similarity + paragraph set difference.

Recent 8-K announcements

Per-item disclosure feed. Item 2.02 is the earnings release.

May 28, 20265.02 · Departure/Election5.07 · Submission9.01 · Financial Statements and Exhibits Apr 24, 2026no items parsed Nov 18, 2025no items parsed Apr 21, 2025no items parsed Apr 16, 2025no items parsed

YoY shift: Lean +

Year-over-year tone shift - average net-tone change across Risk Factors and MD&A vs the prior 10-K. This filing is 0.16pp more bullish than last year's.

Why YoY instead of absolute: the LM lexicon has ~6.6× more negative words than positive (legal/risk-disclosure language is heavy on hedging), so every 10-K reads bearish on raw tone. Year-over-year change strips that bias and surfaces the actual shift in management's framing.

Per-snippet highlights

Sentence-level sentiment highlighting with category and subcategory filters is coming once the snippet-scoring pipeline lands. For now, dig into the actual section text on the Sections tab.

Top insiders

Most active reporters at Marathon Bancorp, Inc. /MD/

Name	Roles	Filings
Grimm Thomas L	Director	4
Werth Ann M	Director	3
Wimmer Timothy R	Director	3
Zientara Amy	OfficerDirector	3
Terwilliger Thomas	Director	1

Showing 6-10 of 10

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Top performers

Insiders ranked by realized 90-day signed return on their open-market trades at Marathon Bancorp, Inc. /MD/. Minimum 3 scored trades. Returns are signed - a sale followed by a rally counts against the insider.

#	Insider	Trades	Win rate	Avg	Median	Best	Worst
1	Zillges Nicholas W	11	91%	+12.8%	+7.9%	+31.9%	-14.3%

All filings

87 Form 4 / 4-A filings, newest first

Filed	Insider	Top transaction	Shares	Price	Value
Mar 20, 2026	Grimm Thomas L Director	MExercise	3,599	$8.13	$29,260
Mar 18, 2026	Spatz Nora EVP and CAO	MExercise	2,399	$8.13	$19,504
Feb 24, 2026	Zillges Nicholas W President and CEO · Director	MExercise	2,998	$6.48	$19,427
Dec 3, 2025	Zillges Nicholas W President and CEO · Director	IDiscretionary	1,646	$11.2668	$18,545
Dec 3, 2025	Spatz Nora EVP and CAO	IDiscretionary	3,166	$11.2668	$35,671

Showing 6-10 of 87

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Real-time Form 4 intelligence. Smarter insider tracking.

Filed		Top transaction	Shares	Price	Value