The following table details the insider trading activities
(stock purchases, stock sales, and stock option exercises) of Grimm Thomas L since 2026.
This trader's CIK number is 1856214.
At the time of last reporting, Grimm Thomas L was the Director of Marathon Bancorp, Inc. /md/. (stock ticker symbol MBBC).
Also see all insider trading activities at Marathon Bancorp, Inc. /md/.
| Insider Buying | Insider Sales | Option Exercises | |||||
|---|---|---|---|---|---|---|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
| 2026 | MBBC | 0 | $0 | 0 | $0 | 4,198 | $30,666 |
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|---|---|---|---|---|
| 2026-03-20 | MBBC | Option Ex | 4,198 | 7.30 | 30,666 |
Insider trading activities including stock purchases, stock sales, and option exercises listed in the above table cannot be completely guaranteed as to their accuracy. For more information regarding the trades made by Grimm Thomas L (Director of Marathon Bancorp, Inc. /md/ at the time of this reporting) see the Securities and Exchange Commission (SEC) website.