Marathon Bancorp, Inc. (MBBC) Insider Trading

Over the last 3 months, MBBC insiders made 24 open-market buys and 0 sales, a net purchase of $105K (SEC Form 4). Multiple insiders bought within days of each other (cluster buying). Over the last 6 months, 0 institutions increased and 1 reduced their position (13F).

Insider Activity

Sentiment
100/100
Buys (3m)
24
Sells (3m)
0
Net (3m)
$105.1K
Insiders buyingCluster buying
Insider trades by month Buys Sells
Nov
Mar
May
Jun
Nov
Jun
Context3-month price +2.9%Institutions mixed (13F)
DateInsiderTypeSharesPrice
Jun 11, 2026Zillges Nicholas Wdirector, officer: President and CEOBuy21$13.77
Jun 11, 2026Cornish Terryofficer: SVP and CCOBuy263$13.75
Jun 11, 2026Cornish Terryofficer: SVP and CCOBuy27$13.77
Jun 11, 2026Cornish Terryofficer: SVP and CCOBuy116$14.25
Jun 11, 2026Cornish Terryofficer: SVP and CCOBuy71$14.24
Jun 11, 2026Cornish Terryofficer: SVP and CCOBuy693$14.50
Jun 11, 2026Cornish Terryofficer: SVP and CCOBuy219$14.75
Jun 11, 2026Knopf Michelleofficer: EVP and COOBuy197$13.75
Jun 11, 2026Knopf Michelleofficer: EVP and COOBuy20$13.77
Jun 11, 2026Knopf Michelleofficer: EVP and COOBuy87$14.25
Jun 11, 2026Knopf Michelleofficer: EVP and COOBuy54$14.24
Jun 11, 2026Knopf Michelleofficer: EVP and COOBuy519$14.50
Jun 11, 2026Knopf Michelleofficer: EVP and COOBuy164$14.75
Jun 11, 2026Zillges Nicholas Wdirector, officer: President and CEOBuy203$13.75
Jun 11, 2026Spatz Noraofficer: EVP and CAOBuy602$14.75
Jun 11, 2026Spatz Noraofficer: EVP and CAOBuy1,904$14.50
Jun 11, 2026Spatz Noraofficer: EVP and CAOBuy197$14.24
Jun 11, 2026Spatz Noraofficer: EVP and CAOBuy320$14.25
Jun 11, 2026Spatz Noraofficer: EVP and CAOBuy74$13.77
Jun 11, 2026Spatz Noraofficer: EVP and CAOBuy722$13.75
Jun 11, 2026Zillges Nicholas Wdirector, officer: President and CEOBuy170$14.75
Jun 11, 2026Zillges Nicholas Wdirector, officer: President and CEOBuy537$14.50
Jun 11, 2026Zillges Nicholas Wdirector, officer: President and CEOBuy55$14.24
Jun 11, 2026Zillges Nicholas Wdirector, officer: President and CEOBuy90$14.25
Jun 5, 2026Zientara Amydirector, other: Chairwoman of the BoardOption899$6.48
Jun 5, 2026Wimmer Timothy RdirectorOption899$6.48
Jun 5, 2026Wimmer Timothy RdirectorOption3,599$8.13
Jun 5, 2026Grimm Thomas LdirectorOption300$6.48
Jun 5, 2026Zillges Nicholas Wdirector, officer: President and CEOOption1,500$6.48
Jun 5, 2026Spatz Noraofficer: EVP and CAOOption1,200$8.13

Source: MBBC SEC Form 4 filings, latest Jun 11, 2026. For informational purposes only — not investment advice.

Institutional activity (13F)

How institutions changed their MBBC positions over the last 6 months (SEC Form 13F).

Increased
0
New positions
2
Reduced
1
Sold out
1
Largest moves
InstitutionActionSharesFiled
ALLIANCEBERNSTEIN L.P.Unchanged153KMay 15, 2026
MALTESE CAPITAL MANAGEMENT LLCUnchanged145KMay 15, 2026
RAFFLES ASSOCIATES LPUnchanged108KMay 15, 2026
VANGUARD CAPITAL MANAGEMENT LLCNew Position77KMay 15, 2026
MINERVA ADVISORS LLCUnchanged59KMay 12, 2026
KLCM ADVISORS, INC.Unchanged34KApr 30, 2026
STILWELL VALUE LLCUnchanged20KMay 6, 2026
VANGUARD FIDUCIARY TRUST CONew Position16KMay 8, 2026
TOWER RESEARCH CAPITAL LLC (TRC)Reduced226May 15, 2026
BANK OF AMERICA CORP /DE/Sold Out0May 18, 2026

Source: SEC Form 13F filings. For informational purposes only — not investment advice.

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