X0201 42003-08-070 0000799166 MASSBANK CORP MASB 0001235384 MARSHALL STEPHEN E C/O MASSBANK 123 HAVEN STREET READING MA 01867 1000MASSBANK Corp Common Stock2003-08-074J0112511.25A1317.08DMASSBANK Corp Common Stock2003-08-074S0112532.3139D192.08DMASSBANK Corp Common Stock2003-08-074J0140011.5625A1592.08DMASSBANK Corp Common Stock2003-08-074S0140032.3139D192.08DOption11.252003-08-074J0112511.25D1994-04-192004-04-18Common11250DOption11.56252003-08-074J0140011.5625D1995-01-172005-01-16Common14000DIncludes 1.454 shares purchsed on 05/22/2003 at a price of $30.149 per share pursuant to the reinvestment of dividends under the MASSBANK Corp Dividend Reinvestment PlanExercise of stock option granted under the MASSBANK Corp 1986 Stock Option PlanExercise of stock option granted under the MASSBANK Corp 1994 Stock Incentive PlanDavid F. Carroll, Attorney-In-Fact for Stephen E. Marshall2003-08-07