Exhibit 99A NICOLAZZO & ASSOCIATES FOR IMMEDIATE RELEASE Contact: Richard E. Nicolazzo Nicolazzo & Associates 617-227-4150 SHAREHOLDERS APPROVE MERGER AGREEMENT BETWEEN THE BOSTON BANCORP AND BANK OF BOSTON CORPORATION BOSTON, MA, April 11, 1996 - At the annual meeting of The Boston Bancorp, the holding company of South Boston Savings Bank, stockholders voted to approve the merger agreement between The Boston Bancorp and Bank of Boston Corporation on terms announced on October 11, 1995. The merger agreement was approved by more than the required two-thirds of the outstanding shares of The Boston Bancorp. The merger, which remains subject to regulatory approval, is expected to be consummated in June 1996. In addition, Robert E. Lee and Frank G. Neal, Jr. were elected directors of The Boston Bancorp. Page 5