In the last 12 months, insiders at Marathon Bancorp, Inc. /MD/ ($MBBC) filed 104 transactions with the SEC: 10 open-market purchases totaling $66,172 and 0 sales totaling $0. Net insider sentiment: net buying.
Marathon Bancorp, Inc. /MD/ operates in the Savings institutions, not federally chartered industry (Finance sector).
Most Active Insiders
- Zillges Nicholas W (President and CEO) — 28 transactions totaling $301,156
- Spatz Nora (EVP and CAO) — 24 transactions totaling $180,887
- Grimm Thomas L (Director) — 6 transactions totaling $108,141
- Selting-Buchberger Joy (SVP and CFO) — 10 transactions totaling $61,106
- Knopf Michelle (EVP and COO) — 8 transactions totaling $59,103
View all SEC Filings for Marathon Bancorp, Inc. /MD/ (MBBC).
Set Up your own filters →Recent Insider Transactions
| Transaction Date | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|
| March 20, 2026 | Grimm Thomas L | Director | M | Stock Options | 599 | $0.00 | 900.0000 | 2,698,863 | 39.96% | 0.02% |
| March 20, 2026 | Grimm Thomas L | Director | M | Stock Options | 3599 | $0.00 | 2,400.0000 | 2,698,863 | 59.99% | 0.13% |
| March 20, 2026 | Grimm Thomas L | Director | M | Common Stock | 599 | $6.48 | 24,992.0000 | 2,698,863 | 2.46% | 0.02% |
| March 20, 2026 | Grimm Thomas L | Director | M | Common Stock | 3599 | $8.13 | 24,393.0000 | 2,698,863 | 17.31% | 0.13% |
| March 18, 2026 | Spatz Nora | EVP and CAO | M | Stock Options | 1921 | $0.00 | 2,883.0000 | 2,698,863 | 39.99% | 0.07% |
| March 18, 2026 | Spatz Nora | EVP and CAO | M | Stock Options | 2399 | $0.00 | 3,600.0000 | 2,698,863 | 39.99% | 0.09% |
| March 18, 2026 | Spatz Nora | EVP and CAO | M | Common Stock | 1921 | $6.48 | 61,008.0000 | 2,698,863 | 3.25% | 0.07% |
| March 18, 2026 | Spatz Nora | EVP and CAO | M | Common Stock | 2399 | $8.13 | 59,087.0000 | 2,698,863 | 4.23% | 0.09% |
| Feb. 23, 2026 | Zillges Nicholas W | President and CEO | M | Common Stock | 2998 | $6.48 | 91,212.0000 | 2,698,863 | 3.40% | 0.11% |
| Feb. 23, 2026 | Zillges Nicholas W | President and CEO | M | Stock Options | 2998 | $0.00 | 34,494.0000 | 2,698,863 | 8.00% | 0.11% |
| Dec. 2, 2025 | Zillges Nicholas W | President and CEO | I | Common Stock | 634 | $11.11 | 88,190.0000 | 2,690,390 | 0.72% | 0.02% |
| Dec. 1, 2025 | Zillges Nicholas W | President and CEO | I | Common Stock | 1646 | $11.27 | 87,556.0000 | 2,690,390 | 1.92% | 0.06% |
| Dec. 2, 2025 | Spatz Nora | EVP and CAO | I | Common Stock | 45 | $11.30 | 56,688.0000 | 2,690,390 | 0.08% | 0.00% |
| Dec. 2, 2025 | Spatz Nora | EVP and CAO | I | Common Stock | 1220 | $11.11 | 56,643.0000 | 2,690,390 | 2.20% | 0.05% |
| Dec. 1, 2025 | Spatz Nora | EVP and CAO | I | Common Stock | 3166 | $11.27 | 55,423.0000 | 2,690,390 | 6.06% | 0.12% |
| Dec. 2, 2025 | Knopf Michelle | EVP and COO | I | Common Stock | 20 | $11.30 | 22,990.0000 | 2,690,390 | 0.09% | 0.00% |
| Dec. 2, 2025 | Knopf Michelle | EVP and COO | I | Common Stock | 536 | $11.11 | 22,970.0000 | 2,690,390 | 2.39% | 0.02% |
| Dec. 1, 2025 | Knopf Michelle | EVP and COO | I | Common Stock | 1393 | $11.27 | 22,434.0000 | 2,690,390 | 6.62% | 0.05% |
| Dec. 2, 2025 | Zillges Nicholas W | President and CEO | I | Common Stock | 24 | $11.30 | 88,214.0000 | 2,690,390 | 0.03% | 0.00% |
| Nov. 26, 2025 | Zillges Nicholas W | President and CEO | P | Common Stock | 1075 | $11.37 | 85,910.0000 | 2,690,390 | 1.27% | 0.04% |
| Nov. 13, 2025 | Zillges Nicholas W | President and CEO | P | Common Stock | 1325 | $11.00 | 84,835.0000 | 2,690,390 | 1.59% | 0.05% |
| June 28, 2025 | Zillges Nicholas W | President and CEO | F | Common Stock | 1169 | $9.99 | 83,510.0000 | 2,058,363 | 1.38% | 0.06% |
| June 28, 2025 | Cornish Terry | SVP and CCO | F | Common Stock | 225 | $9.99 | 30,338.0000 | 2,058,363 | 0.74% | 0.01% |
| June 28, 2025 | Zillges Nicholas W | President and CEO | F | Common Stock | 1196 | $9.99 | 83,483.0000 | 2,058,363 | 1.41% | 0.06% |
| June 28, 2025 | Selting-Buchberger Joy | SVP and CFO | F | Common Stock | 517 | $9.99 | 28,390.0000 | 2,058,363 | 1.79% | 0.03% |
| June 28, 2025 | Spatz Nora | EVP and CAO | F | Common Stock | 451 | $9.99 | 52,257.0000 | 2,058,363 | 0.86% | 0.02% |
| June 28, 2025 | Knopf Michelle | EVP and COO | F | Common Stock | 197 | $9.99 | 21,041.0000 | 2,058,363 | 0.93% | 0.01% |
| June 13, 2025 | Zillges Nicholas W | President and CEO | P | Common Stock | 500 | $9.99 | 84,679.0000 | 2,058,363 | 0.59% | 0.02% |
| May 29, 2025 | Zillges Nicholas W | President and CEO | I | Common Stock | 695 | $10.01 | 84,179.0000 | 2,058,363 | 0.83% | 0.03% |
| May 29, 2025 | Spatz Nora | EVP and CAO | I | Common Stock | 992 | $10.01 | 52,708.0000 | 2,058,363 | 1.92% | 0.05% |
| May 16, 2025 | Zillges Nicholas W | President and CEO | P | Common Stock | 500 | $10.07 | 83,484.0000 | 2,058,363 | 0.60% | 0.02% |
| May 16, 2025 | Cornish Terry | SVP and CCO | F | Common Stock | 38 | $10.03 | 30,563.0000 | 2,058,363 | 0.12% | 0.00% |
| May 16, 2025 | Spatz Nora | EVP and CAO | F | Common Stock | 29 | $10.03 | 51,716.0000 | 2,058,363 | 0.06% | 0.00% |
| May 16, 2025 | Selting-Buchberger Joy | SVP and CFO | F | Common Stock | 44 | $10.03 | 28,907.0000 | 2,058,363 | 0.15% | 0.00% |
| May 16, 2025 | Knopf Michelle | EVP and COO | F | Common Stock | 70 | $10.03 | 21,238.0000 | 2,058,363 | 0.33% | 0.00% |
| April 21, 2025 | Knopf Michelle | EVP and COO | A | Common Stock | 3300 | $10.00 | 21,308.0000 | 2,058,363 | 18.33% | 0.16% |
| April 21, 2025 | Spatz Nora | EVP and CAO | A | Common Stock | 500 | $10.00 | 51,745.0000 | 2,058,363 | 0.98% | 0.02% |
| April 21, 2025 | Spatz Nora | EVP and CAO | A | Common Stock | 600 | $10.00 | 51,745.0000 | 2,058,363 | 1.17% | 0.03% |
| April 21, 2025 | Zillges Nicholas W | President and CEO | A | Common Stock | 6500 | $10.00 | 82,984.0000 | 2,058,363 | 8.50% | 0.32% |
| April 21, 2025 | Zillges Nicholas W | President and CEO | A | Common Stock | 3500 | $10.00 | 82,984.0000 | 2,058,363 | 4.40% | 0.17% |
| April 21, 2025 | Selting-Buchberger Joy | SVP and CFO | A | Common Stock | 5000 | $10.00 | 28,951.0000 | 2,058,363 | 20.88% | 0.24% |
| April 21, 2025 | Cornish Terry | SVP and CCO | A | Common Stock | 2500 | $10.00 | 30,601.0000 | 2,058,363 | 8.90% | 0.12% |
| April 21, 2025 | Grimm Thomas L | Director | A | Common Stock | 7500 | $10.00 | 20,794.0000 | 2,058,363 | 56.42% | 0.36% |
| April 21, 2025 | Werth Ann M | Director | A | Common Stock | 550 | $10.00 | 3,617.0000 | 2,058,363 | 17.93% | 0.03% |
| April 21, 2025 | Wimmer Timothy R | Director | A | Common Stock | 2500 | $10.00 | 12,362.0000 | 2,058,363 | 25.35% | 0.12% |
| April 21, 2025 | Zientara Amy | Other | A | Common Stock | 2500 | $10.00 | 19,226.0000 | 2,058,363 | 14.95% | 0.12% |
| April 21, 2025 | Spatz Nora | EVP and CAO | A | Common Stock | 5000 | $10.00 | 51,745.0000 | 2,058,363 | 10.70% | 0.24% |
| June 28, 2024 | Knopf Michelle | EVP and COO | F | Common Stock | 127 | $8.99 | 12,830.0000 | 2,045,044 | 0.98% | 0.01% |
| May 16, 2024 | Knopf Michelle | EVP and COO | F | Common Stock | 47 | $8.85 | 12,957.0000 | 2,045,044 | 0.36% | 0.00% |
| June 28, 2024 | Cornish Terry | SVP and CCO | F | Common Stock | 125 | $8.99 | 20,187.0000 | 2,045,044 | 0.62% | 0.01% |
| May 16, 2024 | Cornish Terry | SVP and CCO | F | Common Stock | 19 | $8.85 | 20,312.0000 | 2,045,044 | 0.09% | 0.00% |
| June 28, 2024 | Spatz Nora | EVP and CAO | F | Common Stock | 288 | $8.99 | 33,057.0000 | 2,045,044 | 0.86% | 0.01% |
| May 16, 2024 | Spatz Nora | EVP and CAO | F | Common Stock | 19 | $8.85 | 33,345.0000 | 2,045,044 | 0.06% | 0.00% |
| June 28, 2024 | Zillges Nicholas W | President and CEO | F | Common Stock | 823 | $8.99 | 52,507.0000 | 2,045,044 | 1.54% | 0.04% |
| June 28, 2024 | Selting-Buchberger Joy | SVP and CFO | F | Common Stock | 268 | $8.99 | 17,170.0000 | 2,045,044 | 1.54% | 0.01% |
| May 16, 2024 | Selting-Buchberger Joy | SVP and CFO | F | Common Stock | 18 | $8.85 | 17,438.0000 | 2,045,044 | 0.10% | 0.00% |
| May 23, 2024 | Zillges Nicholas W | President and CEO | I | Common Stock | 1569 | $8.43 | 52,904.0000 | 2,045,044 | 3.06% | 0.08% |
| May 23, 2024 | Zillges Nicholas W | President and CEO | I | Common Stock | 200 | $8.32 | 51,335.0000 | 2,045,044 | 0.39% | 0.01% |
| March 6, 2024 | Zillges Nicholas W | President and CEO | P | Common Stock | 100 | $9.51 | 51,135.0000 | 2,044,170 | 0.20% | 0.00% |
| Dec. 1, 2023 | Spatz Nora | EVP and CAO | I | Common Stock | 538 | $9.68 | 33,096.0000 | 2,046,349 | 1.65% | 0.03% |
| Nov. 30, 2023 | Zillges Nicholas W | President and CEO | I | Common Stock | 1249 | $8.33 | 49,831.0000 | 2,046,349 | 2.57% | 0.06% |
| Dec. 1, 2023 | Zillges Nicholas W | President and CEO | I | Common Stock | 1184 | $9.68 | 51,015.0000 | 2,046,349 | 2.38% | 0.06% |
| Nov. 30, 2023 | Knopf Michelle | EVP/Dir. of Mortgage Services | I | Common Stock | 1619 | $8.33 | 11,275.0000 | 2,046,349 | 16.77% | 0.08% |
| Dec. 1, 2023 | Knopf Michelle | EVP/Dir. of Mortgage Services | I | Common Stock | 1534 | $9.68 | 12,809.0000 | 2,046,349 | 13.61% | 0.07% |
| Nov. 30, 2023 | Spatz Nora | EVP and CAO | I | Common Stock | 568 | $8.33 | 32,558.0000 | 2,046,349 | 1.78% | 0.03% |
| Nov. 30, 2023 | Cornish Terry | SVP and CCO | I | Common Stock | 284 | $8.33 | 19,868.0000 | 2,046,349 | 1.45% | 0.01% |
| Dec. 1, 2023 | Cornish Terry | SVP and CCO | I | Common Stock | 269 | $9.68 | 20,137.0000 | 2,046,349 | 1.35% | 0.01% |
| Nov. 16, 2023 | Zillges Nicholas W | President and CEO | P | Common Stock | 1100 | $7.39 | 48,582.0000 | 2,046,349 | 2.32% | 0.05% |
| Nov. 16, 2023 | Zillges Nicholas W | President and CEO | P | Common Stock | 300 | $7.20 | 48,462.0000 | 2,046,349 | 0.62% | 0.01% |
| Nov. 16, 2023 | Zillges Nicholas W | President and CEO | P | Common Stock | 140 | $7.20 | 48,582.0000 | 2,046,349 | 0.29% | 0.01% |
| June 28, 2023 | Selting-Buchberger Joy | SVP and CFO | F | Common Stock | 286 | $10.25 | 17,251.0000 | 2,105,104 | 1.63% | 0.01% |
| June 28, 2023 | Zillges Nicholas W | President and CEO | F | Common Stock | 833 | $10.25 | 47,062.0000 | 2,105,104 | 1.74% | 0.04% |
| June 28, 2023 | Spatz Nora | EVP and CAO | F | Common Stock | 306 | $10.25 | 31,990.0000 | 2,105,104 | 0.95% | 0.01% |
| June 28, 2023 | Knopf Michelle | EVP/Dir. of Mortgage Services | F | Common Stock | 126 | $10.25 | 9,656.0000 | 2,105,104 | 1.29% | 0.01% |
| June 28, 2023 | Cornish Terry | SVP and CCO | F | Common Stock | 131 | $10.25 | 19,584.0000 | 2,105,104 | 0.66% | 0.01% |
| May 16, 2023 | Knopf Michelle | EVP/Dir. of Mortgage Services | A | Stock Options | 3500 | $0.00 | 6,777.0000 | 2,105,104 | 106.81% | 0.17% |
| May 16, 2023 | Spatz Nora | EVP and CAO | A | Common Stock | 500 | $0.00 | 31,492.0000 | 2,105,104 | 1.61% | 0.02% |
| May 16, 2023 | Cornish Terry | SVP and CCO | A | Common Stock | 500 | $0.00 | 17,772.0000 | 2,105,104 | 2.89% | 0.02% |
| May 16, 2023 | Cornish Terry | SVP and CCO | A | Stock Options | 3500 | $0.00 | 6,777.0000 | 2,105,104 | 106.81% | 0.17% |
| May 16, 2023 | Selting-Buchberger Joy | SVP and CFO | A | Stock Options | 3500 | $0.00 | 7,870.0000 | 2,105,104 | 80.09% | 0.17% |
| May 16, 2023 | Selting-Buchberger Joy | SVP and CFO | A | Common Stock | 500 | $0.00 | 17,537.0000 | 2,105,104 | 2.93% | 0.02% |
| May 16, 2023 | Zillges Nicholas W | President and CEO | A | Stock Options | 5462 | $0.00 | 27,311.0000 | 2,105,104 | 25.00% | 0.26% |
| May 16, 2023 | Spatz Nora | EVP and CAO | A | Stock Options | 3500 | $0.00 | 7,870.0000 | 2,105,104 | 80.09% | 0.17% |
| May 16, 2023 | Knopf Michelle | EVP/Dir. of Mortgage Services | A | Common Stock | 500 | $0.00 | 9,776.0000 | 2,105,104 | 5.39% | 0.02% |
| June 7, 2023 | Knopf Michelle | EVP/Dir. of Mortgage Services | I | Common Stock | 6 | $10.30 | 9,786.0000 | 2,105,104 | 0.06% | 0.00% |
| June 7, 2023 | Spatz Nora | EVP and CAO | I | Common Stock | 4 | $10.30 | 32,300.0000 | 2,105,104 | 0.01% | 0.00% |
| June 7, 2023 | Cornish Terry | SVP and CCO | I | Common Stock | 1943 | $10.30 | 19,718.0000 | 2,105,104 | 10.93% | 0.09% |
| June 7, 2023 | Zillges Nicholas W | President and CEO | I | Common Stock | 1361 | $10.30 | 47,905.0000 | 2,105,104 | 2.92% | 0.06% |
| May 18, 2023 | Zillges Nicholas W | President and CEO | P | Common Stock | 1000 | $9.50 | 46,544.0000 | 2,105,104 | 2.20% | 0.05% |
| May 18, 2023 | Spatz Nora | EVP and CAO | P | Common Stock | 800 | $9.50 | 32,296.0000 | 2,105,104 | 2.54% | 0.04% |
| May 16, 2023 | Wimmer Timothy R | Director | A | Stock Options | 1092 | $0.00 | 5,462.0000 | 2,105,104 | 24.99% | 0.05% |
| May 16, 2023 | Zientara Amy | Other | A | Stock Options | 1092 | $0.00 | 5,462.0000 | 2,105,104 | 24.99% | 0.05% |
| May 16, 2023 | Grimm Thomas L | Director | A | Stock Options | 1092 | $0.00 | 5,462.0000 | 2,105,104 | 24.99% | 0.05% |
| May 16, 2023 | Werth Ann M | Director | A | Stock Options | 1092 | $0.00 | 2,184.0000 | 2,105,104 | 100.00% | 0.05% |
| May 16, 2023 | Werth Ann M | Director | A | Common Stock | 1311 | $0.00 | 2,235.0000 | 2,105,104 | 141.88% | 0.06% |
| May 16, 2023 | Selting-Buchberger Joy | SVP and CFO | A | Common Stock | 500 | $0.00 | 17,542.0000 | 2,105,104 | 2.93% | 0.02% |
| May 16, 2023 | Selting-Buchberger Joy | SVP and CFO | A | Stock Options | 3500 | $0.00 | 7,870.0000 | 2,105,104 | 80.09% | 0.17% |
| May 16, 2023 | Cornish Terry | SVP and CCO | A | Common Stock | 500 | $0.00 | 17,775.0000 | 2,105,104 | 2.89% | 0.02% |
| May 16, 2023 | Cornish Terry | SVP and CCO | A | Stock Options | 3500 | $0.00 | 6,777.0000 | 2,105,104 | 106.81% | 0.17% |
| May 16, 2023 | Knopf Michelle | EVP/Dir. of Mortgage Services | A | Common Stock | 500 | $0.00 | 9,780.0000 | 2,105,104 | 5.39% | 0.02% |
| May 16, 2023 | Knopf Michelle | EVP/Dir. of Mortgage Services | A | Stock Options | 3500 | $0.00 | 6,777.0000 | 2,105,104 | 106.81% | 0.17% |
| May 16, 2023 | Spatz Nora | EVP and CAO | A | Common Stock | 500 | $0.00 | 31,496.0000 | 2,105,104 | 1.61% | 0.02% |
| May 16, 2023 | Spatz Nora | EVP and CAO | A | Stock Options | 3500 | $0.00 | 7,870.0000 | 2,105,104 | 80.09% | 0.17% |
| May 16, 2023 | Zillges Nicholas W | President and CEO | A | Stock Options | 5462 | $0.00 | 27,311.0000 | 2,105,104 | 25.00% | 0.26% |