Latest Period
Q2 2026
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
Institutions Reporting
12
Shares (Excl. Options)
634,112
Price
$15.28
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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
- Total 13F value
- $9,421,065
- Portfolio coverage rank
- 0%
- Share change
- +21,556
- Value change
- +$329,769
- Number of holders
- 12
- Shares outstanding
- 2,951,790
- SEC-reported price per share
- $15.20
- Insider filing price
- $15.20
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
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 $8,077,948 to $9,421,065.
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
Open SEC evidence
Latest holder context comes from 12 institutions filings for Q2 2026.
Security key
565759206
Latest holder 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
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 565759206:
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 634,112 shares of Marathon Bancorp, Inc. /MD/ - Common Stock, par value $0.01 per share (MBBC). This represents 21% of the company’s total 2,951,790 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
Latest
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 |