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Filing Detail
Form 497 - Definitive materials:
SEC Accession No. 0000912938-08-000276
Filing Date
2008-04-01 09:32:49
Effectiveness Date

Document Format Files

Seq Description Document Type Size
1 STICKER rbf.txt 497 11921
  Complete submission text file 0000912938-08-000276.txt   15649

Series and Classes/Contracts Information:

  Status Name Ticker Symbol
CIK 0000063075      
Series S000002497   MFS Research Bond Fund
Class/Contract C000006760   A MRBFX
Class/Contract C000006761   R5 MRBJX
Class/Contract C000006762   529A EARBX
Class/Contract C000006763   529B EBRBX
Class/Contract C000006764   529C ECRBX
Class/Contract C000006765   B MRBBX
Class/Contract C000006766   C MRBCX
Class/Contract C000006767   I MRBIX
Class/Contract C000006768   R MRBRX
Class/Contract C000006769   R1 MRBGX
Class/Contract C000006770   R2 MRBKX
Class/Contract C000006771   R3 MRRRX
Class/Contract C000006772   R4 MRBHX
Class/Contract C000034443   Class W Shares MRBWX
Mailing Address 500 BOYLSTON STREET 15TH FL BOSTON MA 02116
Business Address 500 BOYLSTON ST 15 TH FL BOSTON MA 02116 18006372929
MFS SERIES TRUST IX /MA/ (Filer) CIK: 0000063075 (see all company filings)

IRS No.: 042535629 | State of Incorp.: MA | Fiscal Year End: 0430
Type: 497 | Act: 33 | File No.: 002-50409 | Film No.: 08727490