Form DEFA14A MFS SERIES TRUST VI

October 22, 2026 4:02 PM EDT

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

Filed by the Registrant  [X] Filed by a Party Other Than the Registrant [ ]

          

Check the Appropriate Box:

[ ] 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

MFS UTILITIES SERIES

          

(Names of Registrants as Specified in their Charters)

          

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

Payment of Filing Fee (Check the Appropriate Box):

[X] No fee required

[ ] Fee computed on table below per Exchange Act Rules 14a-6(i)(4) and 0-11.

1) Title of each class of securities to which transaction applies:

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[ ] Fee paid previously with preliminary materials.

[ ] Check box if any part of the fee is offset as provided by Exchange Act Rule 0-11(a)(2) and identify the filing for which the offsetting fee was paid previously. Identify the previous filing by registration statement number, or the Form or Schedule and the date of its filing.

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MFS.com Proxy Language

MFS® Utilities Fund (MMU)

Action Requested: We need your vote!

The Trustees of the Fund recommend that shareholders VOTE to approve re-classifying the diversification status of the Fund from diversified to non- diversified. MFS believes re-classifying the Fund as non-diversified is in the best interest of investors and will provide MFS more flexibility to actively manage benchmark relative risk among the largest names in the Fund. Proxy materials describing the proposal and the rationale for the proposal were mailed to shareholders of the Fund on October 20, 2026.

 

To Vote: Please contact Computershare Fund Services by calling toll-free at (855) 372-3507 as soon as possible. They are available between 9:00 a.m. and 11:00 p.m. Eastern Time, Monday through Friday and 12:00 p.m. to 6:00 p.m. Eastern Time on Saturday. The call will only take a few moments of your time and representatives are standing by to assist you with this matter. If you have your proxy card available, you may also use this link https://www.proxy-direct.com  which will bring you directly to the Computershare voting page.

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MFS® Utilities Series (VUF) - VIT

Action Requested: We need your vote!

The Trustees of the Fund recommend that shareholders VOTE to approve reclassifying the diversification status of the Fund from diversified to non- diversified. MFS believes re-classifying the Fund as non-diversified is in the best interest of investors and will provide MFS more flexibility to actively manage benchmark relative risk among the largest names in the Fund. Proxy materials describing the proposal and the rationale for the proposal were mailed to shareholders of the Fund on October 20, 2026.

 

To Vote: Please contact Computershare Fund Services by calling toll-free at (855) 372-4607 as soon as possible. They are available between 9:00 a.m. and 11:00 p.m. Eastern Time, Monday through Friday and 12:00 p.m. to 6:00 p.m. Eastern Time on Saturday. The call will only take a few moments of your time and representatives are standing by to assist you with this matter. If you have your proxy card available, you may also use this link https://www.proxy-direct.com which will bring you directly to the Computershare voting page. 




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