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MFS Cash Reserve Fund
(a series of MFS Series Trust I)
Supplement to be affixed to the current
Prospectus for distribution in Iowa
For shares designated as Class B purchased after September 1, 1993, a contingent
deferred sales charge declining from 4% to 0% will be imposed if the investor
redeems within six years from the date of purchase. In addition, the Class is
subject to an annual distribution and service fee of 1% of its average daily net
assets.
The date of this Supplement is April 1, 1996.
<PAGE>
MFS Managed Sectors Fund
(a series of MFS Series Trust I)
Supplement to be affixed to the current
Prospectus for distribution in Iowa
For shares designated as Class B purchased after September 1, 1993, a contingent
deferred sales charge declining from 4% to 0% will be imposed if the investor
redeems within six years from the date of purchase. In addition, the Class is
subject to an annual distribution and service fee of 1% of its average daily net
assets.
The date of this Supplement is April 1, 1996.
