MFS® U.S. Government Money Market Fund

Effective February 27, 2009, new purchases into this fund have been suspended. Please see the prospectus for more information on purchase restrictions.

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6/14/16
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2/18/16

Money Market Fund Reports

Monthly Portfolio Holding Reports:

1The fund files monthly portfolio information with the Securities and Exchange Commission (SEC) on Form N-MFP. The fund files monthly portfolio information on Form N-MFP as of the last business day of the month no later than the fifth business day of the following month. Prior to April 14, 2016, the funds Form N-MFP became publicly available on the SECs website 60 days after the filing date. For filings made after April 14, 2016, the funds filings on Form N-MFP will be immediately available on the SECs website.

*By selecting the link, you will be directed to the corresponding filing on the SEC website.

This publication is authorized for distribution only when preceded or accompanied by a prospectus, or summary prospectus, for the portfolio being offered. Consider the fund's investment objectives, risks, charges and expenses. Contact MFS or view online. Read it carefully.