StockData
MBBCNasdaqSavings Institutions, Not Federally CharteredFiscal year ends June 30

Marathon Bancorp, Inc. /MD/

Financials through Q4 FY2026, quarter ended Jun 30, 2026Last filing: 10-K on Sep 16, 2026
$14.65+0.15 (+1.03%)

Close on Oct 19, 2026

Market cap
$40.08M
P/E (TTM)
22.2
Dividend yield
–

About Marathon Bancorp

Savings Institutions, Not Federally Chartered, SIC 6036

Marathon Bancorp, Inc. operates as the bank holding company for Marathon Bank, a community-oriented savings institution. Through its subsidiary, the company provides traditional banking and retail financial services to individuals and commercial clients. Its deposit products encompass checking, savings, money market, and certificate of deposit accounts, along with commercial cash management and remote deposit services. The company's lending activities concentrate primarily on commercial and multifamily real estate loans, as well as one- to four-family residential mortgage loans. It also originates construction, commercial and industrial, and consumer loans to a lesser extent, while investing in debt securities.

The company delivers its banking products and services through a main office and four branch locations. Its operations and branches are situated across Marathon, Ozaukee, and Waukesha counties in Wisconsin, with lending activities extending into broader markets across Southeastern Wisconsin, including the Milwaukee metropolitan area. Marathon Bancorp is headquartered in Wausau, Wisconsin.

Summary of the business section of Marathon Bancorp's latest annual report, written by StockData.

Company profile

Company

Legal name
Marathon Bancorp, Inc. /MD/
Founded
1902
Headquarters
Wausau, WI
Address
500 Scott Street 54403
Phone
(715) 845-7331
Employees
31, Jun 30, 2026
Industry
Savings Institutions, Not Federally Chartered
Fiscal year ends
June 30
Auditor
Bonadio & Co., LLP, Pittsford, New York

Stock & identifiers

Ticker
MBBC
Exchange
Nasdaq
IPO date
Apr 20, 2021
Shares outstanding
3M, Sep 15, 2026
Public float
$6.93M, Dec 31, 2025
Filer category
Non-accelerated filer<br>Smaller reporting company
SEC CIK
1835385
CUSIP
565759206
ISIN
US5657592060
EIN
86-2191258

Executives and directors

Officers and directors who filed ownership reports (Forms 3, 4, 5) in the last two years

NamePositionShares owned
Nicholas W. ZillgesPresident and CEO, Director112,129
Nora SpatzEVP and CAO74,045
Joy Selting-BuchbergerSVP and CFO28,725
Terry CornishSVP and CCO35,711
Michelle KnopfEVP and COO30,131
Ann M. WerthDirector8,501
Amy ZientaraDirector27,110
Thomas L. GrimmDirector28,678
Timothy R. WimmerDirector20,246

Employees

Headcount reported in annual reports

“As of June 30, 2026, we had 31 full-time equivalent employees.”

Corporate history

Events identified from SEC filings

DateEventDetails
Apr 21, 2025ListingRegistration of securities on an exchange (Form 8-A)