X0201 4 2004-02-17 0 0000799166 MASSBANK CORP MASB 0001235392 STACKHOUSE DONALD D C/O MASSBANK CORP 123 HAVEN STREET READING MA 01867 1 0 0 0 Common Stock MASSBANK Corp 2004-02-17 4 S 0 1600.0000 39.9800 D 16860.0000 D Sale of 1,600 shares of MASSBANK Corp common stock owned by Dr. Donald B. Stackhouse's wife. Includes 8,710 shares owned directly by Dr. Donald B. Stackhouse and 8,150 shares owned indirectly by Dr. Stackhouse. The nature of the indirect beneficial ownership is that the shares are owned by the wife of Dr. Stackhouse. Dr. Stackhouse disclaims beneficial ownership of the 8,150 shares and the filing of this report shall not be deemed an admission that Dr. Stackhouse is the beneficial owner. Dr. Donald B. Stackhouse 2004-02-19