MBBCMarathon Bancorp, Inc. /MD/
- Market cap
- $44.16M
- as of 2026-10-23
- Latest close
- $14.67
- as of 2026-10-23
- Sector
- Financial Services
- as of 2026-10-24
- Industry
- Banks - Regional
- as of 2026-10-24
Cluster
No cluster in the last 90 days under the default rule (14d · ≥2 insiders · all roles).
Form 4 historysince 2023-10-04
Dashed line = amended filing (Form 4/A)
| Insider | Traded | Filed | Type | Shares | Price | Value | Owned after | 10b5-1 plan | Filing |
|---|---|---|---|---|---|---|---|---|---|
| Spatz NoraEVP and CAO | Sep 18 | Sep 18 | M | 1,201 | $8.13 | $9,764 | 28,297 | No | Form 4 |
| Spatz NoraEVP and CAO | Sep 18 | Sep 18 | M | 962 | $6.48 | $6,234 | 29,259 | No | Form 4 |
| Spatz NoraEVP and CAO | Sep 18 | Sep 18 | M · derivative | 1,201 | $8.13 | $9,764 | 1,199 | No | Form 4 |
| Spatz NoraEVP and CAO | Sep 18 | Sep 18 | M · derivative | 962 | $6.48 | $6,234 | 1,921 | No | Form 4 |
| Selting-Buchberger JoySVP and CFO | Jun 28 | Jun 30 | F | 522 | $15.49 | $8,086 | 4,760 | No | Form 4 |
| Spatz NoraEVP and CAO | Jun 28 | Jun 30 | F | 503 | $15.49 | $7,791 | 27,096 | No | Form 4 |
| Zillges Nicholas WPresident and CEO | Jun 28 | Jun 30 | F | 1,269 | $15.49 | $19,657 | 55,936 | No | Form 4 |
| Knopf MichelleEVP and COO | Jun 28 | Jun 30 | F | 225 | $15.49 | $3,485 | 8,557 | No | Form 4 |
| Cornish TerrySVP and CCO | Jun 28 | Jun 30 | F | 247 | $15.49 | $3,826 | 6,256 | No | Form 4 |
| Zillges Nicholas WPresident and CEO | Jun 16 | Jun 17 | P | 970 | $15.00 | Purchase +$14,550 | 57,205 | No | Form 4 |
| Spatz NoraEVP and CAO | Jun 15 | Jun 16 | A | 6,450 | $0.00 | $0 | 27,599 | No | Form 4 |
| Spatz NoraEVP and CAO | Jun 15 | Jun 16 | A · derivative | 11,000 | $14.55 | $160,050 | 11,000 | No | Form 4 |
| Zillges Nicholas WPresident and CEO | Jun 15 | Jun 16 | A | 16,934 | $0.00 | $0 | 56,235 | No | Form 4 |
| Zillges Nicholas WPresident and CEO | Jun 15 | Jun 16 | A · derivative | 42,335 | $14.55 | $615,974 | 42,335 | No | Form 4 |
| Knopf MichelleEVP and COO | Jun 15 | Jun 16 | A | 5,450 | $0.00 | $0 | 8,782 | No | Form 4 |
| Knopf MichelleEVP and COO | Jun 15 | Jun 16 | A · derivative | 10,000 | $14.55 | $145,500 | 10,000 | No | Form 4 |
| Cornish TerrySVP and CCO | Jun 15 | Jun 16 | A | 3,500 | $0.00 | $0 | 6,503 | No | Form 4 |
| Cornish TerrySVP and CCO | Jun 15 | Jun 16 | A · derivative | 7,000 | $14.55 | $101,850 | 7,000 | No | Form 4 |
| Zientara Amy | Jun 15 | Jun 16 | A | 3,386 | $0.00 | $0 | 27,110 | No | Form 4 |
| Zientara Amy | Jun 15 | Jun 16 | A · derivative | 8,467 | $14.55 | $123,195 | 8,467 | No | Form 4 |
| Grimm Thomas L | Jun 15 | Jun 16 | A | 3,386 | $0.00 | $0 | 6,384 | No | Form 4 |
| Grimm Thomas L | Jun 15 | Jun 16 | A · derivative | 8,467 | $14.55 | $123,195 | 8,467 | No | Form 4 |
| Wimmer Timothy R | Jun 15 | Jun 16 | A | 3,386 | $0.00 | $0 | 6,384 | No | Form 4 |
| Wimmer Timothy R | Jun 15 | Jun 16 | A · derivative | 8,467 | $14.55 | $123,195 | 8,467 | No | Form 4 |
| Werth Ann M | Jun 15 | Jun 16 | A | 3,386 | $0.00 | $0 | 8,501 | No | Form 4 |
| Werth Ann M | Jun 15 | Jun 16 | A · derivative | 8,467 | $14.55 | $123,195 | 8,467 | No | Form 4 |
| Spatz NoraEVP and CAO | Jun 10 | Jun 11 | P | 602 | $14.75 | Purchase +$8,880 | 39,520 | No | Form 4 |
| Zillges Nicholas WPresident and CEO | Jun 10 | Jun 11 | P | 170 | $14.75 | Purchase +$2,508 | 51,160 | No | Form 4 |
| Knopf MichelleEVP and COO | Jun 10 | Jun 11 | P | 164 | $14.75 | Purchase +$2,419 | 19,339 | No | Form 4 |
| Cornish TerrySVP and CCO | Jun 10 | Jun 11 | P | 219 | $14.75 | Purchase +$3,230 | 27,205 | No | Form 4 |
| Spatz NoraEVP and CAO | Jun 9 | Jun 11 | P | 1,904 | $14.50 | Purchase +$27,608 | 38,918 | No | Form 4 |
| Zillges Nicholas WPresident and CEO | Jun 9 | Jun 11 | P | 537 | $14.50 | Purchase +$7,787 | 50,990 | No | Form 4 |
| Knopf MichelleEVP and COO | Jun 9 | Jun 11 | P | 519 | $14.50 | Purchase +$7,526 | 19,175 | No | Form 4 |
| Cornish TerrySVP and CCO | Jun 9 | Jun 11 | P | 693 | $14.50 | Purchase +$10,049 | 26,986 | No | Form 4 |
| Spatz NoraEVP and CAO | Jun 8 | Jun 11 | P | 197 | $14.24 | Purchase +$2,805 | 37,014 | No | Form 4 |
| Zillges Nicholas WPresident and CEO | Jun 8 | Jun 11 | P | 55 | $14.24 | Purchase +$783 | 50,453 | No | Form 4 |
| Knopf MichelleEVP and COO | Jun 8 | Jun 11 | P | 54 | $14.24 | Purchase +$769 | 18,656 | No | Form 4 |
| Cornish TerrySVP and CCO | Jun 8 | Jun 11 | P | 71 | $14.24 | Purchase +$1,011 | 26,293 | No | Form 4 |
| Spatz NoraEVP and CAO | Jun 5 | Jun 11 | P | 320 | $14.25 | Purchase +$4,560 | 36,817 | No | Form 4 |
| Zillges Nicholas WPresident and CEO | Jun 5 | Jun 11 | P | 90 | $14.25 | Purchase +$1,283 | 50,398 | No | Form 4 |
| Knopf MichelleEVP and COO | Jun 5 | Jun 11 | P | 87 | $14.25 | Purchase +$1,240 | 18,602 | No | Form 4 |
| Cornish TerrySVP and CCO | Jun 5 | Jun 11 | P | 116 | $14.25 | Purchase +$1,653 | 26,222 | No | Form 4 |
| Spatz NoraEVP and CAO | Jun 4 | Jun 11 | P | 74 | $13.77 | Purchase +$1,019 | 34,497 | No | Form 4 |
| Zillges Nicholas WPresident and CEO | Jun 4 | Jun 11 | P | 21 | $13.77 | Purchase +$289 | 50,308 | No | Form 4 |
| Knopf MichelleEVP and COO | Jun 4 | Jun 11 | P | 20 | $13.77 | Purchase +$275 | 18,515 | No | Form 4 |
| Cornish TerrySVP and CCO | Jun 4 | Jun 11 | P | 27 | $13.77 | Purchase +$372 | 26,106 | No | Form 4 |
| Spatz NoraEVP and CAO | Jun 3 | Jun 11 | P | 722 | $13.75 | Purchase +$9,928 | 36,423 | No | Form 4 |
| Zillges Nicholas WPresident and CEO | Jun 3 | Jun 11 | P | 203 | $13.75 | Purchase +$2,791 | 50,287 | No | Form 4 |
| Knopf MichelleEVP and COO | Jun 3 | Jun 11 | P | 197 | $13.75 | Purchase +$2,709 | 18,495 | No | Form 4 |
| Cornish TerrySVP and CCO | Jun 3 | Jun 11 | P | 263 | $13.75 | Purchase +$3,616 | 26,079 | No | Form 4 |
| Wimmer Timothy R | Jun 3 | Jun 5 | M | 3,599 | $8.13 | $29,260 | 12,963 | No | Form 4 |
| Wimmer Timothy R | Jun 3 | Jun 5 | M | 899 | $6.48 | $5,826 | 13,862 | No | Form 4 |
| Wimmer Timothy R | Jun 3 | Jun 5 | M · derivative | 3,599 | $8.13 | $29,260 | 2,400 | No | Form 4 |
| Wimmer Timothy R | Jun 3 | Jun 5 | M · derivative | 899 | $6.48 | $5,826 | 600 | No | Form 4 |
| Grimm Thomas L | Jun 3 | Jun 5 | M | 300 | $6.48 | $1,944 | 22,294 | No | Form 4 |
| Grimm Thomas L | Jun 3 | Jun 5 | M · derivative | 300 | $6.48 | $1,944 | 600 | No | Form 4 |
| Zillges Nicholas WPresident and CEO | Jun 3 | Jun 5 | M | 1,500 | $6.48 | $9,720 | 39,301 | No | Form 4 |
| Zillges Nicholas WPresident and CEO | Jun 3 | Jun 5 | M · derivative | 1,500 | $6.48 | $9,720 | 3,000 | No | Form 4 |
| Spatz NoraEVP and CAO | Jun 3 | Jun 5 | M | 1,200 | $8.13 | $9,756 | 21,149 | No | Form 4 |
| Spatz NoraEVP and CAO | Jun 3 | Jun 5 | M · derivative | 1,200 | $8.13 | $9,756 | 2,400 | No | Form 4 |
| Zientara Amy | Jun 3 | Jun 5 | M | 3,599 | $8.13 | $29,260 | 22,825 | No | Form 4 |
| Zientara Amy | Jun 3 | Jun 5 | M | 899 | $6.48 | $5,826 | 23,724 | No | Form 4 |
| Zientara Amy | Jun 3 | Jun 5 | M · derivative | 3,599 | $8.13 | $29,260 | 2,400 | No | Form 4 |
| Zientara Amy | Jun 3 | Jun 5 | M · derivative | 899 | $6.48 | $5,826 | 600 | No | Form 4 |
| Knopf MichelleEVP and COO | May 16 | May 19 | F | 86 | $14.50 | $1,247 | 3,332 | No | Form 4 |
| Spatz NoraEVP and CAO | May 16 | May 19 | F | 30 | $14.50 | $435 | 19,949 | No | Form 4 |
| Selting-Buchberger JoySVP and CFO | May 16 | May 19 | F | 56 | $14.50 | $812 | 5,282 | No | Form 4 |
| Cornish TerrySVP and CCO | May 16 | May 19 | F | 41 | $14.50 | $595 | 3,003 | No | Form 4 |
| Werth Ann M | May 5 | May 6 | M | 899 | $8.13 | $7,309 | 4,516 | No | Form 4 |
| Werth Ann M | May 5 | May 6 | M | 599 | $6.48 | $3,882 | 5,115 | No | Form 4 |
| Werth Ann M | May 5 | May 6 | M · derivative | 899 | $8.13 | $7,309 | 600 | No | Form 4 |
| Werth Ann M | May 5 | May 6 | M · derivative | 599 | $6.48 | $3,882 | 900 | No | Form 4 |
| Grimm Thomas L | Mar 20 | Mar 20 | M | 3,599 | $8.13 | $29,260 | 21,395 | No | Form 4 |
| Grimm Thomas L | Mar 20 | Mar 20 | M | 599 | $6.48 | $3,882 | 21,994 | No | Form 4 |
| Grimm Thomas L | Mar 20 | Mar 20 | M · derivative | 3,599 | $8.13 | $29,260 | 2,400 | No | Form 4 |
| Grimm Thomas L | Mar 20 | Mar 20 | M · derivative | 599 | $6.48 | $3,882 | 900 | No | Form 4 |
| Spatz NoraEVP and CAO | Mar 18 | Mar 18 | M | 2,399 | $8.13 | $19,504 | 18,058 | No | Form 4 |
| Spatz NoraEVP and CAO | Mar 18 | Mar 18 | M | 1,921 | $6.48 | $12,448 | 19,979 | No | Form 4 |
| Spatz NoraEVP and CAO | Mar 18 | Mar 18 | M · derivative | 2,399 | $8.13 | $19,504 | 3,600 | No | Form 4 |
| Spatz NoraEVP and CAO | Mar 18 | Mar 18 | M · derivative | 1,921 | $6.48 | $12,448 | 2,883 | No | Form 4 |
| Zillges Nicholas WPresident and CEO | Feb 23 | Feb 24 | M | 2,998 | $6.48 | $19,427 | 37,801 | No | Form 4 |
| Zillges Nicholas WPresident and CEO | Feb 23 | Feb 24 | M · derivative | 2,998 | $6.48 | $19,427 | 4,500 | No | Form 4 |
| Zillges Nicholas WPresident and CEO | Dec 2, 2025 | Dec 3, 2025 | I | 634 | $11.11 | $7,044 | 50,060 | No | Form 4 |
| Zillges Nicholas WPresident and CEO | Dec 2, 2025 | Dec 3, 2025 | I | 24 | $11.30 | $271 | 50,084 | No | Form 4 |
| Spatz NoraEVP and CAO | Dec 2, 2025 | Dec 3, 2025 | I | 1,220 | $11.11 | $13,554 | 35,656 | No | Form 4 |
| Spatz NoraEVP and CAO | Dec 2, 2025 | Dec 3, 2025 | I | 45 | $11.30 | $509 | 35,701 | No | Form 4 |
| Knopf MichelleEVP and COO | Dec 2, 2025 | Dec 3, 2025 | I | 536 | $11.11 | $5,955 | 18,278 | No | Form 4 |
| Knopf MichelleEVP and COO | Dec 2, 2025 | Dec 3, 2025 | I | 20 | $11.30 | $226 | 18,298 | No | Form 4 |
| Zillges Nicholas WPresident and CEO | Dec 1, 2025 | Dec 3, 2025 | I | 1,646 | $11.27 | $18,550 | 49,426 | No | Form 4 |
| Spatz NoraEVP and CAO | Dec 1, 2025 | Dec 3, 2025 | I | 3,166 | $11.27 | $35,681 | 34,436 | No | Form 4 |
| Knopf MichelleEVP and COO | Dec 1, 2025 | Dec 3, 2025 | I | 1,393 | $11.27 | $15,699 | 17,742 | No | Form 4 |
| Zillges Nicholas WPresident and CEO | Nov 26, 2025 | Nov 28, 2025 | P | 1,075 | $11.37 | Purchase +$12,223 | 34,803 | No | Form 4 |
| Zillges Nicholas WPresident and CEO | Nov 13, 2025 | Nov 14, 2025 | P | 1,325 | $11.00 | Purchase +$14,575 | 33,728 | No | Form 4 |
| Zillges Nicholas WPresident and CEO | Jun 28, 2025 | Jul 2, 20254/A | F | 1,169 | $9.99 | $11,678 | 32,403 | No | Form 4/A |
| Spatz NoraEVP and CAO | Jun 28, 2025 | Jul 1, 2025 | F | 451 | $9.99 | $4,505 | 15,659 | No | Form 4 |
| Knopf MichelleEVP and COO | Jun 28, 2025 | Jul 1, 2025 | F | 197 | $9.99 | $1,968 | 3,418 | No | Form 4 |
| Cornish TerrySVP and CCO | Jun 28, 2025 | Jul 1, 2025 | F | 225 | $9.99 | $2,248 | 3,044 | No | Form 4 |
| Selting-Buchberger JoySVP and CFO | Jun 28, 2025 | Jul 1, 2025 | F | 517 | $9.99 | $5,165 | 5,338 | No | Form 4 |
| Zillges Nicholas WPresident and CEO | Jun 13, 2025 | Jun 16, 2025 | P | 500 | $9.99 | Purchase +$4,995 | 33,572 | No | Form 4 |
| Spatz NoraEVP and CAO | May 29, 2025 | Jun 3, 2025 | I | 992 | $10.01 | $9,930 | 31,270 | No | Form 4 |
| Zillges Nicholas WPresident and CEO | May 29, 2025 | Jun 3, 2025 | I | 695 | $10.01 | $6,957 | 47,780 | No | Form 4 |
| Zillges Nicholas WPresident and CEO | May 16, 2025 | May 20, 2025 | P | 500 | $10.07 | Purchase +$5,035 | 33,072 | No | Form 4 |
| Selting-Buchberger JoySVP and CFO | May 16, 2025 | May 20, 2025 | F | 44 | $10.03 | $441 | 5,855 | No | Form 4 |
| Spatz NoraEVP and CAO | May 16, 2025 | May 20, 2025 | F | 29 | $10.03 | $291 | 16,110 | No | Form 4 |
| Knopf MichelleEVP and COO | May 16, 2025 | May 20, 2025 | F | 70 | $10.03 | $702 | 3,615 | No | Form 4 |
| Cornish TerrySVP and CCO | May 16, 2025 | May 20, 2025 | F | 38 | $10.03 | $381 | 3,269 | No | Form 4 |
| Zillges Nicholas WPresident and CEO | Apr 21, 2025 | Apr 22, 2025 | A | 6,500 | $10.00 | $65,000 | 32,572 | No | Form 4 |
| Zillges Nicholas WPresident and CEO | Apr 21, 2025 | Apr 22, 2025 | A | 3,500 | $10.00 | $35,000 | 47,085 | No | Form 4 |
| Spatz NoraEVP and CAO | Apr 21, 2025 | Apr 22, 2025 | A | 5,000 | $10.00 | $50,000 | 30,278 | No | Form 4 |
| Spatz NoraEVP and CAO | Apr 21, 2025 | Apr 22, 2025 | A | 500 | $10.00 | $5,000 | 1,598 | No | Form 4 |
| Spatz NoraEVP and CAO | Apr 21, 2025 | Apr 22, 2025 | A | 600 | $10.00 | $6,000 | 1,149 | No | Form 4 |
| Knopf MichelleEVP and COO | Apr 21, 2025 | Apr 22, 2025 | A | 3,300 | $10.00 | $33,000 | 16,349 | No | Form 4 |
| Selting-Buchberger JoySVP and CFO | Apr 21, 2025 | Apr 22, 2025 | A | 5,000 | $10.00 | $50,000 | 21,788 | No | Form 4 |
| Cornish TerrySVP and CCO | Apr 21, 2025 | Apr 22, 2025 | A | 2,500 | $10.00 | $25,000 | 25,816 | No | Form 4 |
| Grimm Thomas L | Apr 21, 2025 | Apr 22, 2025 | A | 7,500 | $10.00 | $75,000 | 17,796 | No | Form 4 |
| Werth Ann M | Apr 21, 2025 | Apr 22, 2025 | A | 550 | $10.00 | $5,500 | 3,617 | No | Form 4 |
| Wimmer Timothy R | Apr 21, 2025 | Apr 22, 2025 | A | 2,500 | $10.00 | $25,000 | 9,364 | No | Form 4 |
| Zientara Amy | Apr 21, 2025 | Apr 22, 2025 | A | 2,500 | $10.00 | $25,000 | 19,226 | No | Form 4 |
| Cornish TerrySVP and CCO | Jun 28, 2024 | Jul 2, 2024 | F | 125 | $8.99 | $1,124 | 2,410 | No | Form 4 |
| Spatz NoraEVP and CAO | Jun 28, 2024 | Jul 2, 2024 | F | 288 | $8.99 | $2,589 | 11,757 | No | Form 4 |
| Zillges Nicholas WPresident and CEO | Jun 28, 2024 | Jul 2, 2024 | F | 823 | $8.99 | $7,399 | 18,993 | No | Form 4 |
| Selting-Buchberger JoySVP and CFO | Jun 28, 2024 | Jul 2, 2024 | F | 268 | $8.99 | $2,409 | 4,298 | No | Form 4 |
| Knopf MichelleEVP and COO | Jun 28, 2024 | Jul 2, 2024 | F | 127 | $8.99 | $1,142 | 2,685 | No | Form 4 |
| Cornish TerrySVP and CCO | May 16, 2024 | Jul 2, 2024 | F | 19 | $8.85 | $168 | 2,535 | No | Form 4 |
| Spatz NoraEVP and CAO | May 16, 2024 | Jul 2, 2024 | F | 19 | $8.85 | $168 | 12,045 | No | Form 4 |
| Selting-Buchberger JoySVP and CFO | May 16, 2024 | Jul 2, 2024 | F | 18 | $8.85 | $159 | 4,566 | No | Form 4 |
| Knopf MichelleEVP and COO | May 16, 2024 | Jul 2, 2024 | F | 47 | $8.85 | $416 | 2,812 | No | Form 4 |
| Zillges Nicholas WPresident and CEO | May 23, 2024 | May 28, 2024 | I | 200 | $8.32 | $1,664 | 30,180 | No | Form 4 |
| Zillges Nicholas WPresident and CEO | May 23, 2024 | May 28, 2024 | I | 1,569 | $8.43 | $13,227 | 31,749 | No | Form 4 |
| Zillges Nicholas WPresident and CEO | Mar 6, 2024 | Mar 7, 2024 | P | 100 | $9.51 | Purchase +$951 | 19,816 | No | Form 4 |
| Cornish TerrySVP and CCO | Dec 1, 2023 | Dec 5, 2023 | I | 269 | $9.68 | $2,604 | 16,985 | No | Form 4 |
| Spatz NoraEVP and CAO | Dec 1, 2023 | Dec 5, 2023 | I | 538 | $9.68 | $5,208 | 18,413 | No | Form 4 |
| Knopf MichelleEVP/Dir. of Mortgage Services | Dec 1, 2023 | Dec 5, 2023 | I | 1,534 | $9.68 | $14,849 | 9,509 | No | Form 4 |
| Zillges Nicholas WPresident and CEO | Dec 1, 2023 | Dec 5, 2023 | I | 1,184 | $9.68 | $11,461 | 29,980 | No | Form 4 |
| Cornish TerrySVP and CCO | Nov 30, 2023 | Dec 5, 2023 | I | 284 | $8.33 | $2,366 | 16,716 | No | Form 4 |
| Spatz NoraEVP and CAO | Nov 30, 2023 | Dec 5, 2023 | I | 568 | $8.33 | $4,731 | 17,875 | No | Form 4 |
| Knopf MichelleEVP/Dir. of Mortgage Services | Nov 30, 2023 | Dec 5, 2023 | I | 1,619 | $8.33 | $13,486 | 7,975 | No | Form 4 |
| Zillges Nicholas WPresident and CEO | Nov 30, 2023 | Dec 5, 2023 | I | 1,249 | $8.33 | $10,404 | 28,796 | No | Form 4 |
| Zillges Nicholas WPresident and CEO | Nov 16, 2023 | Nov 17, 2023 | P | 1,100 | $7.39 | Purchase +$8,129 | 19,716 | No | Form 4 |
| Zillges Nicholas WPresident and CEO | Nov 16, 2023 | Nov 17, 2023 | P | 300 | $7.20 | Purchase +$2,160 | 300 | No | Form 4 |
| Zillges Nicholas WPresident and CEO | Nov 16, 2023 | Nov 17, 2023 | P | 140 | $7.20 | Purchase +$1,008 | 420 | No | Form 4 |
| Spatz NoraEVP and CAO | Jun 28, 2023 | Oct 4, 2023 | F | 306 | $10.25 | $3,137 | 12,064 | No | Form 4 |
| Knopf MichelleEVP/Dir. of Mortgage Services | Jun 28, 2023 | Oct 4, 2023 | F | 126 | $10.25 | $1,292 | 2,859 | No | Form 4 |
| Cornish TerrySVP and CCO | Jun 28, 2023 | Oct 4, 2023 | F | 131 | $10.25 | $1,343 | 2,554 | No | Form 4 |
| Zillges Nicholas WPresident and CEO | Jun 28, 2023 | Oct 4, 2023 | F | 833 | $10.25 | $8,538 | 18,616 | No | Form 4 |
| Selting-Buchberger JoySVP and CFO | Jun 28, 2023 | Oct 4, 2023 | F | 286 | $10.25 | $2,932 | 4,584 | No | Form 4 |