Security Snapshot

Marathon Bancorp, Inc. /MD/ - Common Stock, par value $0.01 per share (MBBC) Institutional Ownership

CUSIP: 565759206

13F Institutional Holders and Ownership History from Q2 2025 to Q2 2026

13F reference period

Q2 2026

Institutions Reporting

12

Shares (Excl. Options)

634.11KFull value: 634,112 · shares · 30 Jun 2026

Price

$15.28

The headline uses the Q2 2026 reference period after its reporting deadline. Available reports may still be incomplete or amended.

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Security type / class
Equity / Common Stock, par value $0.01 per share
Symbol
MBBC on Nasdaq
All holders as of 30 Jun 2026
Q2 2026
Total 13F shares
634,112
Latest holder snapshot 5 signals
Total 13F value
$9,421,065
Portfolio coverage rank
0%
Share change
+21,556
Value change
+$329,769
Number of holders
12
Issuer context Names, identifiers, and filing context for this profile. 3 identity fields
Shares outstanding
2,951,790
SEC-reported price per share
$14.99
Insider filing price
$14.99
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Filing notes and source

Key facts

  • MBBC - Marathon Bancorp, Inc. /MD/ - Common Stock, par value $0.01 per share is tracked under CUSIP 565759206.
  • 12 institutions reported positions in Q2 2026.
  • 3 significant owners is listed from Schedule 13D/13G reporting.

Change

  • Holder count moved from 9 to 12 between Q1 2026 and Q2 2026.
  • SEC-reported value moved from
    $8.08MFull value: $8,077,948 · USD · 31 Mar 2026
    to
    $9.42MFull value: $9,421,065 · USD · 30 Jun 2026
    .

Research use

  • You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
  • 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.

Evidence

Source: SEC Form 13F

Latest holder context comes from 12 institutions filings for Q2 2026.

Open SEC evidence

Security key

565759206

13F reference period

Q2 2026

13F holders

12

13D/G owners

3

CIK / CUSIP context first

Open Q2 2026 holders MBBC full holder history Marathon Bancorp, Inc. /MD/ SEC filings Marathon Bancorp, Inc. /MD/ company facts Marathon Bancorp, Inc. /MD/ insider transactions

Broader feeds

Latest 13F filings Latest 13D/G filings All securities

13D/G owners

Significant owners

Large-stake holder rows connected to Schedule 13D/G evidence.

Rows
3
Security
MBBC
Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
Marathon Bank Employee Stock Ownership Plan Trust 8.7% $2,557,172 254,445 Marathon Bank Employee Stock Ownership Plan Trust 30 Jun 2025
Marathon Bank 401(k) Plan Trust 7.3% +11% $3,091,976 +$327,127 216,071 +12% Marathon Bank 401(k) Plan Trust 30 Jun 2026
ALLIANCEBERNSTEIN L.P. 5.2% $1,863,374 153,238 AllianceBernstein L.P. 31 Dec 2025
As of 30 Jun 2026, 12 institutional investors reported holding
634.11KFull value: 634,112 · shares · 30 Jun 2026
shares of Marathon Bancorp, Inc. /MD/ - Common Stock, par value $0.01 per share (MBBC). This represents 21% of the company’s total
2.95MFull value: 2,951,790 · shares · Stored outstanding share count
outstanding shares.

13F concentration

Top 13 institutional shareholders

Largest 13F positions for this security by reported shares and value.

Top holder share
21%
Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
ALLIANCEBERNSTEIN L.P. 5.2% 153,238 0% 0% $2,073,310
MALTESE CAPITAL MANAGEMENT LLC 4.9% 145,298 +0.14% 0.4% $2,220,154
RAFFLES ASSOCIATES LP 3.6% 107,664 0% 1.4% $1,645,106
VANGUARD CAPITAL MANAGEMENT LLC 2.6% 76,027 -0.75% 0% $1,161,693
Minerva Advisors LLC 1.9% 55,750 -5.5% 0.54% $851,860
KLCM Advisors, Inc. 1.2% 34,320 0% 0.04% $524,410
STILWELL VALUE LLC 0.68% 20,000 0% 0.18% $305,600
VANGUARD FIDUCIARY TRUST CO 0.39% 11,514 -30% 0% $175,934
CITADEL ADVISORS LLC 0.37% 10,984 0% $167,836
GEODE CAPITAL MANAGEMENT, LLC 0.37% 10,871 0% $166,107
BlackRock, Inc. 0.28% 8,357 0% $127,695
UBS Group AG 0% 89 0% $1,360
Tower Research Capital LLC (TRC) 0% 0 -100% $0

Quarter history

Institutional holders across reporting periods

Holder count, reported shares/value, and median price by quarter.

Periods
5
Headline period
Q2 2026
Rows shown
1-5 of 5
Period 13F Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2026 Q2 634,112 $9,421,065 +$329,769 $15.28 12
2026 Q1 612,556 $8,077,948 -$2,279 $13.53 9
2025 Q4 612,726 $7,454,469 +$1,224,154 $12.16 9
2025 Q3 515,809 $5,381,306 +$265,359 $10.43 10
2025 Q2 490,854 $4,888,905 +$4,888,905 $9.96 11
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