X0202 4 2005-04-25 0 0000069407 PIONEER INTEREST SHARES MUO 0001015952 PIRET MAGUERITE A 60 STATE STREET BOSTON MA 02109-1820 1 0 0 0 Pioneer Interest Shares 2005-04-25 4 S 0 109.672 10.87 D 0 D Marguerite A. Piret 2005-05-26