STOCK TITAN

Marathon Bancorp (MBBC) EVP boosts 401(k) with 1,041-share stock purchase

Filing Impact
(Neutral)
Filing Sentiment
(Positive)
Form Type
4

Rhea-AI Filing Summary

Marathon Bancorp EVP and COO Michelle Knopf reported a series of open-market purchases of 1,041 shares of common stock for her 401(k) between June 3 and June 10, at prices around $13.65 to $14.75 per share. Following these buys, her 401(k) holds 19,339 indirect shares, alongside additional direct, ESOP, and stock option positions in Marathon Bancorp stock.

Positive

  • None.

Negative

  • None.
Insider Knopf Michelle
Role EVP and COO
Bought 1,041 shs ($15K)
Type Security Shares Price Value
Purchase Common Stock 164 $14.75 $2K
Purchase Common Stock 519 $14.50 $8K
Purchase Common Stock 54 $14.241 $769.01
Purchase Common Stock 87 $14.2481 $1K
Purchase Common Stock 20 $13.7678 $275.36
Purchase Common Stock 197 $13.748 $3K
holding Stock Options -- -- --
holding Stock Options -- -- --
holding Common Stock -- -- --
holding Common Stock -- -- --
Holdings After Transaction: Common Stock — 19,339 shares (Indirect, By 401(k)); Stock Options — 4,498 shares (Direct, null); Common Stock — 3,332 shares (Direct, null)
Footnotes (1)
  1. The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $13.655 to $13.75, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in footnote (1) to this Form 4. The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $13.75 to $14.00, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in footnote (2) to this Form 4. The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $14.00 to $14.25, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in footnote (3) to this Form 4. The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $14.18 to $14.25, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in footnote (4) to this Form 4. Includes shares of restricted stock which vest at a rate of 20% per year commencing on June 28, 2023. Includes shares of restricted stock which vest at a rate of 20% per year commencing on May 16, 2024. Reflects transactions not required to be reported pursuant to Section 16 of the Securities Exchange Act of 1934, as amended. Stock options vest at a rate of 20% per year commencing on June 28, 2023. Stock options vest at a rate of 20% per year commencing on May 16, 2024.
Total shares purchased 1,041 shares Net open-market buys for 401(k) between June 3–10, 2026
Purchase price range $13.655–$14.75 per share Multiple trades, weighted average prices disclosed in footnotes
401(k) indirect holding 19,339 shares Common stock held indirectly by 401(k) after reported purchases
Direct common stock holding 3,332 shares Common stock held directly as of June 3, 2026 entry
ESOP holding 2,235 shares Common stock held indirectly by ESOP as of June 3, 2026
Stock options at $6.48 4,804 underlying shares at $6.48 Options expiring May 16, 2033; vesting 20% annually from June 28, 2023
Stock options at $8.13 4,498 underlying shares at $8.13 Options expiring June 28, 2032; vesting 20% annually from May 16, 2024
weighted average price financial
"The price reported in Column 4 is a weighted average price."
Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.
restricted stock financial
"Includes shares of restricted stock which vest at a rate of 20% per year"
Shares granted to an individual that carry limits on transfer or sale until certain conditions are met, such as staying with the company for a set time or hitting performance targets. Think of them as a locked gift that gradually opens; for investors they matter because they affect how many shares may enter the market later, signal management incentives and potential dilution, and reveal confidence in future company performance.
Section 16 regulatory
"transactions not required to be reported pursuant to Section 16 of the Securities Exchange Act"
Section 16 is a U.S. securities law rule that governs the trading and disclosure obligations of company insiders — typically officers, directors and large shareholders — to promote transparency and deter unfair profit-taking. It requires insiders to publicly report their stock trades and allows companies or the issuer to reclaim quick, short-term profits from certain insider trades, like a scoreboard and a refund policy that help investors see and limit possible insider advantage.
ESOP financial
"total_shares_following_transaction": "2235.0000", "nature_of_ownership": "By ESOP""
An Employee Stock Ownership Plan (ESOP) is a program that gives employees ownership shares in their company, often as part of their benefits package. It acts like a company-sponsored savings plan, allowing workers to have a stake in the company's success, which can boost motivation and loyalty. For investors, ESOPs can influence company decisions and stock value, making them an important aspect of corporate ownership and governance.
stock options financial
"Stock options vest at a rate of 20% per year commencing on June 28, 2023."
Stock options are agreements that give a person the right to buy or sell a company's stock at a specific price within a certain time frame. They are often used as a reward or incentive, similar to a coupon that can be used later if the stock price rises, allowing the holder to make a profit.
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SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Knopf Michelle

(Last)(First)(Middle)
500 SCOTT STREET

(Street)
WAUSAU WISCONSIN 54403

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
Marathon Bancorp, Inc. /MD/ [ MBBC ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director10% Owner
XOfficer (give title below)Other (specify below)
EVP and COO
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
06/03/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Common Stock06/03/2026P197A$13.748(1)18,495IBy 401(k)
Common Stock06/04/2026P20A$13.7678(2)18,515IBy 401(k)
Common Stock06/05/2026P87A$14.2481(3)18,602IBy 401(k)
Common Stock06/08/2026P54A$14.241(4)18,656IBy 401(k)
Common Stock06/09/2026P519A$14.519,175IBy 401(k)
Common Stock06/10/2026P164A$14.7519,339IBy 401(k)
Common Stock3,332(5)(6)D
Common Stock2,235(7)IBy ESOP
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Stock Options$8.1306/28/202306/28/2032Common Stock4,498(8)4,498(8)D
Stock Options$6.4805/16/202405/16/2033Common Stock4,804(9)4,804(9)D
Explanation of Responses:
1. The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $13.655 to $13.75, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in footnote (1) to this Form 4.
2. The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $13.75 to $14.00, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in footnote (2) to this Form 4.
3. The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $14.00 to $14.25, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in footnote (3) to this Form 4.
4. The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $14.18 to $14.25, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in footnote (4) to this Form 4.
5. Includes shares of restricted stock which vest at a rate of 20% per year commencing on June 28, 2023.
6. Includes shares of restricted stock which vest at a rate of 20% per year commencing on May 16, 2024.
7. Reflects transactions not required to be reported pursuant to Section 16 of the Securities Exchange Act of 1934, as amended.
8. Stock options vest at a rate of 20% per year commencing on June 28, 2023.
9. Stock options vest at a rate of 20% per year commencing on May 16, 2024.
/s/ Benjamin Azoff, pursuant to power of attorney06/11/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transaction did Marathon Bancorp (MBBC) report for Michelle Knopf?

Marathon Bancorp reported that EVP and COO Michelle Knopf bought 1,041 shares of common stock in open-market transactions for her 401(k). These purchases occurred over several days in early June at prices in the mid-$13 to mid-$14 range.

Over what dates did Michelle Knopf buy Marathon Bancorp (MBBC) shares?

Michelle Knopf purchased Marathon Bancorp common shares on June 3, 4, 5, 8, 9, and 10. Each day’s trade was reported separately, with the Form 4 consolidating these buys into a total of 1,041 shares acquired for her 401(k) account.

At what prices did Michelle Knopf buy Marathon Bancorp (MBBC) stock?

Her reported purchase prices range from about $13.655 to $14.75 per share. Several trades used a weighted average price, with footnotes explaining that actual executions occurred across multiple prices within narrow ranges around those averages.

How many Marathon Bancorp (MBBC) shares does Michelle Knopf now hold in her 401(k)?

After these transactions, Michelle Knopf’s 401(k) indirectly holds 19,339 shares of Marathon Bancorp common stock. This position reflects cumulative purchases reported over time, including the recent 1,041-share net buy disclosed in the latest Form 4 filing.

What other Marathon Bancorp (MBBC) equity holdings does Michelle Knopf report?

Beyond her 401(k), Knopf reports 3,332 direct common shares, 2,235 ESOP shares, and stock options over 4,804 and 4,498 underlying shares. These options carry exercise prices of $6.48 and $8.13 with expirations in 2033 and 2032, respectively.

How does the Form 4 describe the nature of Michelle Knopf’s MBBC purchases?

Each reported trade is coded “P” as an open-market purchase of common stock. The filing notes that prices shown are weighted average prices for multiple executions, and it offers to provide full trade-level detail to interested parties upon request.