X0202 4 2007-01-19 0 0000799166 MASSBANK CORP MASB 0001235398 WEST DONNA H C/O MASSBANK CORP 123 HAVEN STREET READING MA 01867 0 1 0 1 Assistant Secretary COO, MASSBANK subsidiary bank common stock 2007-01-19 4 J 0 3500 20.0625 A 39325.1215 D Option (right to buy) 20.0625 2007-01-19 4 J 0 3500 20.0625 D 1997-01-21 2007-01-20 common stock 3500 0 D Exercise of stock option granted under the MASSBANK Corp. Stock Option & Incentive Plan Also includes includes 834.594 shares owned indirectly by Donna H. West as Custodian for minors; this total includes: 6.468 shares acquired 02/20/06 at $33.7194 per share; 6.689 shares acquired 05/19/06 at $32.8682 per share; 6.758 shares acquired 08/17/06 at $32.7970 per share; and 6.899 shares acquired 11/16/06 at $33.5939 per share, pursuant to the reinvestment of dividends under the MASSBANK Corp Dividend Reinvestment Plan. Ms. West disclaims beneficial ownership of these shares and the filing of this report shall not be deemed an admission that Ms. West is the beneficial owner. Also includes 13,503.5975 shares owned indirectly by Donna H. West under the MASSBANK Employee Stock Ownership Plan (ESOP). Donna H. West 2007-01-19