| Fund Name |
| Principal Bond & Mtg Securities A (PRBDX) |
| Principal Bond & Mtg Securities B (PROBX) |
| Principal Bond & Mtg Securities C (PBMCX) |
| Principal Bond & Mtg Securities Inst (PMSIX) |
| Principal Bond & Mtg Securities J (PBMJX) |
| Principal Bond & Mtg Securities R1 (PBOMX) |
| Principal Bond & Mtg Securities R2 (PBMNX) |
| Principal Bond & Mtg Securities R3 (PBMMX) |
| Principal Bond & Mtg Securities R4 (PBMSX) |
| Principal Bond & Mtg Securities R5 (PBMPX) |
| Principal Bond Market Index Instl (PNIIX) |
| Principal Bond Market Index J (PBIJX) |
| Principal Bond Market Index R1 (PBIMX) |
| Principal Bond Market Index R2 (PBINX) |
| Principal Bond Market Index R3 (PBOIX) |
| Principal Bond Market Index R4 (PBIPX) |
| Principal Bond Market Index R5 (PBIQX) |
| Principal California Municipal A (SRCMX) |
| Principal California Municipal B (SQCMX) |
| Principal California Municipal C (SRCCX) |
| Principal Core Plus Bond I Institutional (PCBZX) |
| Principal Core Plus Bond I R-1 (PCBRX) |
| Principal Core Plus Bond I R-2 (PCBBX) |
| Principal Core Plus Bond I R-3 (PCIRX) |
| Principal Core Plus Bond I R-4 (PCBDX) |
| Principal Core Plus Bond I R-5 (PCBEX) |
| Principal Government & High Qual Bd A (CMPGX) |
| Principal Government & High Qual Bd B (CBUGX) |
| Principal Government & High Qual Bd C (CCUGX) |
| Principal Government & High Qual Bd Inst (PMRIX) |
| Principal Government & High Qual Bd J (PMRJX) |
| Principal Government & High Qual Bd R-1 (PMGRX) |
| Principal Government & High Qual Bd R-2 (PFMRX) |
| Principal Government & High Qual Bd R-3 (PRCMX) |
| Principal Government & High Qual Bd R-4 (PMRDX) |
| Principal Government & High Qual Bd R-5 (PMREX) |
| Principal Hi Qual Interm-Term Bond R1 (PHSIX) |
| Principal High Yield A (CPHYX) |
| Principal High Yield B (CBHYX) |
| Principal High Yield C (CCHIX) |
| Principal High Yield I Inst (PYHIX) |
| Principal High Yield Inst (PHYTX) |
| Principal Income A (CMPIX) |
| Principal Income B (CMIBX) |
| Principal Income C (CNMCX) |
| Principal Income Inst (PIOIX) |
| Principal Income J (PIOJX) |
| Principal Income R-1 (PIOMX) |
| Principal Income R-2 (PIONX) |
| Principal Income R-3 (PIOOX) |
| Principal Income R-4 (PIOPX) |
| Principal Income R-5 (PIOQX) |
| Principal Inflation Protection A (PITAX) |
| Principal Inflation Protection C (PPOCX) |
| Principal Inflation Protection Inst (PIPIX) |
| Principal Inflation Protection J (PIPJX) |
| Principal Inflation Protection R1 (PISPX) |
| Principal Inflation Protection R2 (PBSAX) |
| Principal Inflation Protection R3 (PIFPX) |
| Principal Inflation Protection R4 (PIFSX) |
| Principal Inflation Protection R5 (PBPPX) |
| Principal Preferred Securities A (PPSAX) |
| Principal Preferred Securities C (PRFCX) |
| Principal Preferred Securities Inst (PPSIX) |
| Principal Preferred Securities J (PPSJX) |
| Principal Preferred Securities R1 (PUSAX) |
| Principal Preferred Securities R2 (PPRSX) |
| Principal Preferred Securities R3 (PNARX) |
| Principal Preferred Securities R4 (PQARX) |
| Principal Preferred Securities R5 (PPARX) |
| Principal Short-Term Bond R5 (PHSPX) |
| Principal Short-Term Income A (SRHQX) |
| Principal Short-Term Income C (STCCX) |
| Principal Short-Term Income Inst (PSHIX) |
| Principal Tax-Exempt Bond A (PTEAX) |
| Principal Tax-Exempt Bond B (PTBBX) |
| Principal Tax-Exempt Bond C (PTBCX) |
