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$MBBC
$14.52 -$0.15 (1.02%) Close

Ownership

13F as of Q2 2026 · 3.0M shares outstanding

Who owns MBBC?

By type of holder
Institutions 21.1% Insiders 12.2% Everyone else 66.7%
Concentration Top 10 holders own 27.5%
Alliancebernstein L.P. 5.1% · Maltese Capital Management LLC 4.8%
Institutional ownership
21.1%
+0.7 pts vs last qtr
Institutional holders
12
+3 vs last qtr
Net shares bought
+21.6K
by institutions in Q2 2026
New / sold out
4 / 1
positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026
  • Citadel Advisors LLC NEW +11.0K
  • Geode Capital Management, LLC NEW +10.9K

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Biggest sellers in Q2 2026
  • Vanguard Fiduciary Trust Co −4.9K
  • Minerva Advisors LLC −3.2K

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Who is planning to sell?

No insider has filed a notice of proposed sale (Form 144) for Marathon Bancorp Inc in the last 12 months.

Is your stake being diluted?

Diluted share count, FY2021–FY2026
+27.4%
+4.96% a year
Each share's claim on the business
−21.5%
shrank without buying or selling a share
Spent on buybacks vs paid in stock
$362K vs $608K
over 6 fiscal years
Diluted shares, split-adjusted
2.0M2.4M2.8M2021: 2.1M shares'212022: 2.1M shares'222023: 2.1M shares'232024: 2.8M shares'242025: 2.8M shares'252026: 2.7M shares'26
Buybacks Stock-based comp
$0$80.6K$161.2K2021 buybacks: $02021 stock comp: $0'212022 buybacks: $02022 stock comp: $0'222023 buybacks: $02023 stock comp: $130.6K'232024 buybacks: $156.2K2024 stock comp: $159.1K'242025 buybacks: $82.2K2025 stock comp: $156.7K'252026 buybacks: $123.6K2026 stock comp: $161.2K'26

How patient are the owners?

Institutional shares by how long they've been held
5+ years0% 3–5 years0% 1–3 years90% Under 1 year10%
Quarterly turnover
3.2%
of institutional shares changed hands
Top 10 managers, median time held
1 year

Super Investors

Investment managers reporting MBBC on Form 13F
AL
Alliancebernstein L.P.
Shares
153.2K
% of company
5.09%
Change vs last qtr
Unchanged
Held since
2025
MC
Maltese Capital Management LLC
Shares
145.3K
% of company
4.83%
Change vs last qtr
+198 (+0.1%)
Held since
2025

11 more super investors behind a free account

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Institutional Funds

Mutual funds and ETFs reporting MBBC on Form N-PORT; together they hold 3.1% of the company
VT
Vanguard Total Stock Market Index Fund
Vanguard Index Funds
Position value
$847K
% of company
1.84%
% of the fund
0.00%
As of
June 30, 2026
VE
Vanguard Extended Market Index Fund
Vanguard Index Funds
Position value
$289K
% of company
0.63%
% of the fund
0.00%
As of
June 30, 2026

5 more funds behind a free account

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Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G
ZN
Zillges Nicholas W
Insider
Shares
112.1K
% of company
3.73%
Change vs last qtr
—
Held since
—
SN
Spatz Nora
Insider
Shares
76.2K
% of company
2.53%
Change vs last qtr
—
Held since
—

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