MBBC

Marathon Bancorp, Inc.$15.07+0.77 (+5.38%)

Prev Close$14.30·MCap$40.8M·P/E54.24·Vol7.5K·Yield—

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Buys (12M)

$136.9K

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Sells (12M)

$123.3K

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Net Activity

Net Buyer

$13.6K

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Active Insiders

last 12 mo

Over the past 12 months, insider activity at Marathon Bancorp, Inc. (MBBC) has been mixed between buying and selling, with 7 insider purchases totaling $136.9K and 8 insider sales totaling $123.3K. The most recent insider transaction was by Spatz Nora (officer: EVP and CAO), who purchased $54.8K worth of shares on Jun 11, 2026. Marathon Bancorp, Inc. operates in the Financial Services sector, within the Banks - Regional industry, with a market cap of $40.8M.

MBBC Insider Trading Activity

Date	Insider	Role	Type	Shares	Avg Price	Value	Shares After
Jun 11, 2026	Spatz Nora	officer: EVP and CAO	Buy	3,819	$14.35	$54.8K	39,520
Jun 11, 2026	Cornish Terry	officer: SVP and CCO	Buy	1,389	$14.35	$19.9K	27,205
Jun 11, 2026	Knopf Michelle	officer: EVP and COO	Buy	1,041	$14.35	$14.9K	19,339
Jun 11, 2026	Zillges Nicholas W	director, officer: President and CEO	Buy	1,076	$14.35	$15.4K	51,160
Dec 1, 2025	Knopf Michelle	EVP and COO	Sell	1,949	$11.22	$21.9K	0
Dec 1, 2025	Spatz Nora	EVP and CAO	Sell	4,431	$11.22	$49.7K	0
Dec 1, 2025	Zillges Nicholas W	President and CEO	Sell	2,304	$11.22	$25.9K	0
Nov 26, 2025	Zillges Nicholas W	President and CEO	Buy	1,075	$11.37	$12.2K	0
Nov 13, 2025	Zillges Nicholas W	President and CEO	Buy	1,325	$11.00	$14.6K	0
Jun 28, 2025	Cornish Terry	SVP and CCO	Sell	225	$9.99	$2.2K	0
Jun 28, 2025	Knopf Michelle	EVP and COO	Sell	197	$9.99	$2.0K	0
Jun 28, 2025	Selting-Buchberger Joy	SVP and CFO	Sell	517	$9.99	$5.2K	0
Jun 28, 2025	Spatz Nora	EVP and CAO	Sell	451	$9.99	$4.5K	0
Jun 28, 2025	Zillges Nicholas W	President and CEO	Sell	1,196	$9.99	$11.9K	0
Jun 13, 2025	Zillges Nicholas W	President and CEO	Buy	500	$9.99	$5.0K	0
May 29, 2025	Spatz Nora	EVP and CAO	Sell	992	$10.01	$9.9K	0
May 29, 2025	Zillges Nicholas W	President and CEO	Sell	695	$10.01	$7.0K	0
May 16, 2025	Cornish Terry	SVP and CCO	Sell	38	$10.03	$381.14	0
May 16, 2025	Knopf Michelle	EVP and COO	Sell	70	$10.03	$702.10	0
May 16, 2025	Selting-Buchberger Joy	SVP and CFO	Sell	44	$10.03	$441.32	0
May 16, 2025	Spatz Nora	EVP and CAO	Sell	29	$10.03	$290.87	0
May 16, 2025	Zillges Nicholas W	President and CEO	Buy	500	$10.07	$5.0K	0
Mar 7, 2024	Zillges Nicholas W	President and CEO	Buy	100	$9.51	$951.00	19,816
Nov 17, 2023	Zillges Nicholas W	President and CEO	Buy	1,540	$7.33	$11.3K	19,716
May 22, 2023	Spatz Nora	EVP and CAO	Buy	800	$9.50	$7.6K	800
May 22, 2023	Zillges Nicholas W	President and CEO	Buy	1,000	$9.50	$9.5K	19,449
May 18, 2022	Zillges Nicholas W	President and CEO	Buy	1,025	$10.75	$11.0K	7,525
May 27, 2021	Zillges Nicholas W	President and CEO	Buy	2,400	$10.45	$25.1K	6,500+59%

MBBC Insider Buying Activity

The following table shows recent insider purchases of Marathon Bancorp, Inc. (MBBC) stock reported via SEC Form 4 filings.

Date	Insider	Role	Type	Shares	Avg Price	Value	Shares After
Jun 11, 2026	Spatz Nora	officer: EVP and CAO	Buy	3,819	$14.35	$54.8K	39,520
Jun 11, 2026	Cornish Terry	officer: SVP and CCO	Buy	1,389	$14.35	$19.9K	27,205
Jun 11, 2026	Knopf Michelle	officer: EVP and COO	Buy	1,041	$14.35	$14.9K	19,339
Jun 11, 2026	Zillges Nicholas W	director, officer: President and CEO	Buy	1,076	$14.35	$15.4K	51,160
Nov 26, 2025	Zillges Nicholas W	President and CEO	Buy	1,075	$11.37	$12.2K	0
Nov 13, 2025	Zillges Nicholas W	President and CEO	Buy	1,325	$11.00	$14.6K	0
Jun 13, 2025	Zillges Nicholas W	President and CEO	Buy	500	$9.99	$5.0K	0
May 16, 2025	Zillges Nicholas W	President and CEO	Buy	500	$10.07	$5.0K	0
Mar 7, 2024	Zillges Nicholas W	President and CEO	Buy	100	$9.51	$951.00	19,816
Nov 17, 2023	Zillges Nicholas W	President and CEO	Buy	1,540	$7.33	$11.3K	19,716
May 22, 2023	Spatz Nora	EVP and CAO	Buy	800	$9.50	$7.6K	800
May 22, 2023	Zillges Nicholas W	President and CEO	Buy	1,000	$9.50	$9.5K	19,449
May 18, 2022	Zillges Nicholas W	President and CEO	Buy	1,025	$10.75	$11.0K	7,525
May 27, 2021	Zillges Nicholas W	President and CEO	Buy	2,400	$10.45	$25.1K	6,500+59%

MBBC Insider Selling Activity

The following table shows recent insider sales of Marathon Bancorp, Inc. (MBBC) stock reported via SEC Form 4 filings.

Date	Insider	Role	Type	Shares	Avg Price	Value
Dec 1, 2025	Knopf Michelle	EVP and COO	Sell	1,949	$11.22	$21.9K
Dec 1, 2025	Spatz Nora	EVP and CAO	Sell	4,431	$11.22	$49.7K
Dec 1, 2025	Zillges Nicholas W	President and CEO	Sell	2,304	$11.22	$25.9K
Jun 28, 2025	Cornish Terry	SVP and CCO	Sell	225	$9.99	$2.2K
Jun 28, 2025	Knopf Michelle	EVP and COO	Sell	197	$9.99	$2.0K
Jun 28, 2025	Selting-Buchberger Joy	SVP and CFO	Sell	517	$9.99	$5.2K
Jun 28, 2025	Spatz Nora	EVP and CAO	Sell	451	$9.99	$4.5K
Jun 28, 2025	Zillges Nicholas W	President and CEO	Sell	1,196	$9.99	$11.9K
May 29, 2025	Spatz Nora	EVP and CAO	Sell	992	$10.01	$9.9K
May 29, 2025	Zillges Nicholas W	President and CEO	Sell	695	$10.01	$7.0K
May 16, 2025	Cornish Terry	SVP and CCO	Sell	38	$10.03	$381.14
May 16, 2025	Knopf Michelle	EVP and COO	Sell	70	$10.03	$702.10
May 16, 2025	Selting-Buchberger Joy	SVP and CFO	Sell	44	$10.03	$441.32
May 16, 2025	Spatz Nora	EVP and CAO	Sell	29	$10.03	$290.87