0001835385 2025-11-18 2025-11-18 false 000-56269 0001835385 NASDAQ 8-K 2025-11-18 MARATHON BANCORP, INC. MD 86-2191258 500 Scott Street Wausau WI 54402 715 845-7331 false false false false Common Stock, $0.01 par value MBBC true false