Thomas L. Grimm

CIK: 0001856214

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)0 (0.0%)

Position reduction

Option Exercises (M)3 (60.0%)

Derivative conversions

Awards (A)2 (40.0%)

Compensation grants

Other (G, F, J, C, D, …)0 (0.0%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

MBBC

Marathon Bancorp, Inc. /MD/

Director

Discretionary Trading P&L

Holdings

Transaction History (5 total)

MBBC
Marathon Bancorp, Inc. /MD/
Jun 15, 2026
Award(A)
Direct
3.4K shares-
MBBC
Marathon Bancorp, Inc. /MD/
Jun 3, 2026
Exercise(M)
Indirect
300 shares at avg. $6.48$2K
MBBC
Marathon Bancorp, Inc. /MD/
Mar 20, 2026
Exercise(M)
Indirect
3.6K shares at avg. $8.13$29K
MBBC
Marathon Bancorp, Inc. /MD/
Mar 20, 2026
Exercise(M)
Indirect
599 shares at avg. $6.48$4K
MBBC
Marathon Bancorp, Inc. /MD/
Apr 21, 2025
Award(A)
Indirect
7.5K shares at avg. $10.00$75K

		Type	Shares	Price		Ownership
Jun 15, 2026	MBBC Marathon Bancorp, Inc. /MD/	Award(A)	3,386	-	$0	Direct
Jun 3, 2026	MBBC Marathon Bancorp, Inc. /MD/	Exercise(M)	300	$6.48	$1,944	Indirect
Mar 20, 2026	MBBC Marathon Bancorp, Inc. /MD/	Exercise(M)	3,599	$8.13	$29,260	Indirect
Mar 20, 2026	MBBC Marathon Bancorp, Inc. /MD/	Exercise(M)	599	$6.48	$3,882	Indirect
Apr 21, 2025	MBBC Marathon Bancorp, Inc. /MD/	Award(A)	7,500	$10.00	$75,000	Indirect

1-5 of 5 transactions

About Grimm Thomas L

Grimm Thomas L (SEC CIK 0001856214) files insider reports with the SEC as Director of Marathon Bancorp, Inc. /MD/ (MBBC).

Signal8 holds 4 ownership filings by Grimm Thomas L, all Form 4s, filed between Apr 22, 2025 and Jun 16, 2026. Those filings report 5 transactions, from Apr 21, 2025 to Jun 15, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Grimm Thomas L's filings is in WAUSAU, WI.

Recent filings by Grimm Thomas L

Jun 15, 2026: Grant or award of MBBC shares (Form 4, code A).
Jun 3, 2026: Option exercise of MBBC shares (Form 4, code M).
Mar 20, 2026: Option exercises of MBBC shares (2 lines, Form 4, code M).
Apr 21, 2025: Grant or award of MBBC shares (Form 4, code A).

Other insiders filing for Marathon Bancorp, Inc. /MD/ (MBBC)

Spatz Nora, EVP and CAO
Zillges Nicholas W, President and CEO
Werth Ann M, Director
Wimmer Timothy R, Director
Zientara Amy, Director
Cornish Terry, SVP and CCO

How to read Form 4 transaction codes