Marathon Bancorp, Inc. /MD/ (MBBC) Insider Ownership

Historic Insider Ownership Trends

As of April 11, 2026, Marathon Bancorp's top three insider holders are Nicholas W Zillges (President And Ceo, 50.08K shares), Nicholas W Zillges (President And Ceo, 37.80K shares), Nora Spatz (Evp And Cao, 35.70K shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares (Direct) Shares (Indirect) Report Date
Nicholas W Zillges President And Ceo 0 50,084 03 Dec, 2025
Nicholas W Zillges President And Ceo 37,801 0 24 Feb, 2026
Nora Spatz Evp And Cao 0 35,701 03 Dec, 2025
Terry Cornish Svp And Cco 0 25,816 22 Apr, 2025
Thomas L Grimm - 0 21,994 20 Mar, 2026
Joy Selting-Buchberger Svp And Cfo 0 21,788 22 Apr, 2025
Nora Spatz Evp And Cao 19,979 0 18 Mar, 2026
Amy Zientara Chairwoman Of The Board 19,226 0 22 Apr, 2025
Michelle Knopf Evp And Coo 0 18,298 03 Dec, 2025
Timothy R Wimmer - 0 9,364 22 Apr, 2025
Thomas Terwilliger - 7,185 0 29 Jun, 2022
Joy Selting-Buchberger Svp And Cfo 5,338 0 01 Jul, 2025
Ann M Werth - 3,617 0 22 Apr, 2025
Michelle Knopf Evp And Coo 3,418 0 01 Jul, 2025
Terry Cornish Svp And Cco 3,044 0 01 Jul, 2025
Nora Spatz Evp And Cao 0 2,747 22 Apr, 2025
Timothy R Wimmer - 2,185 0 29 Jun, 2022
Thomas L Grimm - 2,185 0 29 Jun, 2022
Nicholas W Zillges President And Ceo 0 420 17 Nov, 2023

* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
20 Mar, 2026 Thomas L Grimm Common Stock A 3,599 $8.13 21,395 I M
20 Mar, 2026 Thomas L Grimm Common Stock A 599 $6.48 21,994 I M
18 Mar, 2026 Nora Spatz Common Stock A 2,399 $8.13 18,058 D M
18 Mar, 2026 Nora Spatz Common Stock A 1,921 $6.48 19,979 D M
18 Mar, 2026 Nora Spatz Stock Options D 2,399 $0.00 3,600 D M
18 Mar, 2026 Nora Spatz Stock Options D 1,921 $0.00 2,883 D M
23 Feb, 2026 Nicholas W Zillges Common Stock A 2,998 $6.48 37,801 D M
23 Feb, 2026 Nicholas W Zillges Stock Options D 2,998 $0.00 4,500 D M
01 Dec, 2025 Michelle Knopf Common Stock A 1,393 $11.27 17,742 I I
01 Dec, 2025 Nicholas W Zillges Common Stock A 1,646 $11.27 49,426 I I
01 Dec, 2025 Nora Spatz Common Stock A 3,166 $11.27 34,436 I I
02 Dec, 2025 Nora Spatz Common Stock A 1,220 $11.11 35,656 I I
02 Dec, 2025 Nicholas W Zillges Common Stock A 634 $11.11 50,060 I I
02 Dec, 2025 Michelle Knopf Common Stock A 536 $11.11 18,278 I I
02 Dec, 2025 Nicholas W Zillges Common Stock A 24 $11.30 50,084 I I
02 Dec, 2025 Nora Spatz Common Stock A 45 $11.30 35,701 I I
02 Dec, 2025 Michelle Knopf Common Stock A 20 $11.30 18,298 I I
26 Nov, 2025 Nicholas W Zillges Common Stock A 1,075 $11.37 34,803 D P
13 Nov, 2025 Nicholas W Zillges Common Stock A 1,325 $11.00 33,728 D P
28 Jun, 2025 Nicholas W Zillges Common Stock D 1,169 $9.99 32,403 D F