UNITED STATED

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

SCHEDULE 14A

PROXY STATEMENT PURSUANT TO SECTION 14(A) OF THE

SECURITIES EXCHANGE ACT OF 1934

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[ ] Preliminary Proxy Statement

[ ] Confidential for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

[ ] Definitive Proxy Statement

[X] Definitive Additional Materials

[ ] Soliciting Material Pursuant to sec. 240.14a-11(c) of sec. 240.14a-12

MFS UTILITIES FUND

(Names of Registrants as Specified in their Charters)

(Name of Person(s) Filing Proxy Statement, if other than the Registrants)

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MFS^® UTILITIES FUND

A series of MFS^® Series Trust VI

Special Meeting of Shareholders - December 17, 2026

Please Vote Today

Dear Shareholder:

The MFS^® Utilities Fund Special Meeting of Shareholders is scheduled for December 17, 2026, and our records indicate that we have not yet received your vote.

YOUR FUND'S BOARD OF TRUSTEES RECOMMENDS THAT YOU VOTE "FOR" THE PROPOSAL

Voting now helps minimize additional costs to the funds, avoids additional mailings,

and eliminates phone calls to shareholders.

The Proxy Statement we sent you contains important information regarding the proposal that you and other shareholders are being asked to consider. A copy of the Proxy Statement may be viewed or downloaded at the website listed on your proxy card. If you have any questions regarding the proposal, or need assistance with voting, you may call Computershare Fund Services, the Funds' proxy solicitor, toll-free at 1-866-920-6793.

Please vote using one of the following options:

Thank you for your prompt attention to this matter. If you have already voted, we appreciate your participation, and you may disregard this notice.