Bank Mutual Corporation Announces Quarterly Cash Dividend

Bank Mutual Corporation (NASDAQ: BKMU) today announced that the Board of Directors has declared a quarterly cash dividend of $0.09 per share. This cash dividend of $0.09 per share, on an annualized basis represents a 9.1% increase over the cash dividends paid in 2007. The cash dividend will be payable June 2, 2008 to shareholders of record on May 16, 2008. The quarterly cash dividend of $0.09 is the thirtieth cash dividend paid by Bank Mutual Corporation since becoming a capital stock organization in November 2000. Bank Mutual Corporation is traded on The Nasdaq Global Select MarketSM under the symbol "BKMU.” The Company is the fifth largest banking institution headquartered in the state of Wisconsin, with assets at December 31, 2007 of $3.5 billion. Its subsidiary bank, Bank Mutual, operates 77 offices in the state of Wisconsin and one office in Minnesota.