| 
                  
                       PRINCIPAL ASSET ALLOCATION FUND OF FUNDS-AGGRESSIVE PLAN CHANGED TO PRINCIPAL RETIREMENT SAVINGS FUND-PROGRESSIVE PLAN  | 
| 
                  
                       MERGEDWITH PRINCIPAL HYBRID EQUITY FUND  | 
| 
                  
                       MERGEDWITH SUNDARAM AGGRESSIVE HYBRID FUND  | 
| 
                  
                       PRINCIPAL ASSET ALLOCATION FUND OF FUNDS-CONSERVATIVE PLAN CHANGED TO PRINCIPAL RETIREMENT SAVINGS FUND-CONSERVATIVE PLAN  | 
| 
                  
                       MERGEDWITH PRINCIPAL HYBRID EQUITY FUND  | 
| 
                  
                       MERGEDWITH SUNDARAM AGGRESSIVE HYBRID FUND  | 
| 
                  
                       PRINCIPAL ASSET ALLOCATION FUND OF FUNDS-MODERATE PLAN CHANGED TO PRINCIPAL RETIREMENT SAVINGS FUND-MODERATE PLAN  | 
| 
                  
                       MERGEDWITH PRINCIPAL HYBRID EQUITY FUND  | 
| 
                  
                       MERGEDWITH SUNDARAM AGGRESSIVE HYBRID FUND  | 
| 
                  
                       PRINCIPAL BALANCED FUND CHANGED TO PRINCIPAL HYBRID EQUITY FUND  | 
| 
                  
                       MERGEDWITH SUNDARAM AGGRESSIVE HYBRID FUND  | 
| 
                  
                       PRINCIPAL RETIREMENT SAVINGS FUND-CONSERVATIVE FUND CHANGED TO PRINCIPAL HYBRID EQUITY FUND  | 
| 
                  
                       MERGEDWITH SUNDARAM AGGRESSIVE HYBRID FUND  |