SUB-ITEM 77H
MFS SERIES TRUST I ON BEHALF OF:
MFS Core Growth Fund
MFS Science and Technology Fund
MFS Japan Equity Fund
As of August 31, 2000, entities beneficially owning more than 25% of any one
Series voting securities, thereby becoming controlling entities of such
Series, are those entities as follows:
<TABLE>
<C>
% OF
<S> <C> SHARES
SERIES OWNER AND ADDRESS OWNED
MFS Japan Equity Fund MFS Fund Distributors, Inc. 99.27%
A Shares Mass Financial Services Company
Attn: Thomas B. Hastings
500 Boylston Street, Ste. 9
Boston, Massachusetts 02116-3740
As of August 31, 2000, entities no longer beneficially owning more than 25% of
any one Series voting securities, thereby ceasing to be controlling
entities of such Series, are as follows:
SERIES OWNER AND ADDRESS
MFS Core Growth Fund MFS Defined Contribution Plan
Class I Shares C/o Mark Leary
Massachusetts Financial Services
500 Boylston Street
Boston, MA 02116-3740
MFS Science and Technology Fund MFS Defined Contribution Plan
Class I Shares c/o Mark Leary
Massachusetts Financial Services
500 Boylston Street
Boston, MA 02116-3740
</TABLE>