Series and Classes/Contracts Information:
| Existing | |||
| Status | Name | Ticker Symbol | |
| CIK 0000063075 | |||
| Series S000002492 | MFS Corporate Bond Fund | ||
| Class/Contract C000006711 | A | MFBFX | |
| Class/Contract C000006712 | R4 | MFBJX | |
| Class/Contract C000006716 | B | MFBBX | |
| Class/Contract C000006717 | C | MFBCX | |
| Class/Contract C000006718 | I | MBDIX | |
| Class/Contract C000006720 | R1 | MFBGX | |
| Class/Contract C000006722 | R2 | MBRRX | |
| Class/Contract C000006723 | R3 | MFBHX | |
| Class/Contract C000070424 | R6 | MFBKX | |
| Status | Name | Ticker Symbol | |
| CIK 0000063075 | |||
| Series S000002493 | MFS Inflation-Adjusted Bond Fund | ||
| Class/Contract C000006724 | A | MIAAX | |
| Class/Contract C000006725 | R4 | MIAJX | |
| Class/Contract C000006726 | B | MIABX | |
| Class/Contract C000006727 | C | MIACX | |
| Class/Contract C000006728 | I | MIAIX | |
| Class/Contract C000006730 | R1 | MIALX | |
| Class/Contract C000006732 | R2 | MIATX | |
| Class/Contract C000006733 | R3 | MIAHX | |
| Class/Contract C000126364 | R6 | MIAKX | |
| Status | Name | Ticker Symbol | |
| CIK 0000063075 | |||
| Series S000002495 | MFS Limited Maturity Fund | ||
| Class/Contract C000006744 | I | MQLIX | |
| Class/Contract C000006745 | A | MQLFX | |
| Class/Contract C000006746 | R4 | MQLJX | |
| Class/Contract C000006750 | B | MQLBX | |
| Class/Contract C000006751 | C | MQLCX | |
| Class/Contract C000006753 | R1 | MQLGX | |
| Class/Contract C000006755 | R2 | MLMRX | |
| Class/Contract C000006756 | R3 | MQLHX | |
| Class/Contract C000119776 | R6 | MQLKX | |
| Status | Name | Ticker Symbol | |
| CIK 0000063075 | |||
| Series S000002496 | MFS Municipal Limited Maturity Fund | ||
| Class/Contract C000006757 | A | MTLFX | |
| Class/Contract C000006758 | B | MTLBX | |
| Class/Contract C000006759 | C | MTLCX | |
| Class/Contract C000092113 | I | MTLIX | |
| Class/Contract C000195152 | R6 | MTLRX | |
| Status | Name | Ticker Symbol | |
| CIK 0000063075 | |||
| Series S000002497 | MFS Total Return Bond Fund | ||
| Class/Contract C000006760 | A | MRBFX | |
| Class/Contract C000006761 | R4 | MRBJX | |
| Class/Contract C000006765 | B | MRBBX | |
| Class/Contract C000006766 | C | MRBCX | |
| Class/Contract C000006767 | I | MRBIX | |
| Class/Contract C000006769 | R1 | MRBGX | |
| Class/Contract C000006771 | R2 | MRRRX | |
| Class/Contract C000006772 | R3 | MRBHX | |
| Class/Contract C000034443 | R6 | MRBKX | |
IRS No.: 042535629 | State of Incorp.: MA | Fiscal Year End: 0430
Type: N-CEN | Act: 40 | File No.: 811-02464 | Film No.: 24528957