Company:  MFS SERIES TRUST I (CRHXX)
Form Type:  497
Filing Date:  9/14/2018 
CIK:  0000798244 
Address:  111 HUNTINGTON AVENUE
24TH FLOOR
 
City, State, Zip:  BOSTON, Massachusetts 02199 
Telephone:  18006372929 
Fiscal Year:  11/30 
Register and access this filing in:     
  FORM 497
    SUPPLEMENT TO THE STATEMENT OF ADDITIONAL INFORMATION
      TRUSTEE OWNERSHIP
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