BRENTON BANKS <BRBK.O> 3RD QTR OPER NET Oper shr 38 cts vs 1.84 dlrs Oper net 973,000 vs 4,497,000 Nine mths Oper shr 1.22 dlrs vs 1.31 dlrs Oper net 3,133,000 vs 3,410,000 NOTE: Results exclude extraordinary gain from net loss carryforward of 672,000 dlrs or 27 cts in 1987 3rd qtr, 918,000 dlrs 38 cts in 1986 3rd qtr, and 1,071,000 dlrs or 44 cts in 1987 nine months. 1986 results include 5.1 mln dlr gain from termination of defined benefit pension plan.