MFS^® UTILITIES FUND

A series of MFS^® Series Trust VI

111 Huntington Avenue, Boston, Massachusetts 02199

October 20, 2026

Dear Shareholder:

I am writing to ask for your vote on an important matter that may affect your investment in MFS^® Utilities Fund (the "Fund"). Votes will be cast in person or by proxy at a shareholder meeting scheduled for December 17, 2026. Details about the meeting and the ways you can submit your vote are included in the enclosed proxy statement.

MFS and the Fund’s Board of Trustees (the “Board”) are recommending a vote FOR the proposal to reclassify the Fund from “diversified” to “non-diversified” under the Investment Company Act of 1940, allowing MFS greater flexibility in managing the Fund’s portfolio holdings.

MFS and the Board believe that enhancing MFS’ flexibility to manage the Fund is in your best interest because it allows MFS:

1) to better pursue the Fund’s investment objective on your behalf

2) to actively manage relative risk expectations for the largest positions held by the Fund

IMPORTANT: The Fund’s investment objective, strategy and other investment policies will remain unchanged.

YOUR VOTE MAKES A DIFFERENCE!

How the proxy solicitation will work

You may be contacted by Computershare, a third-party company hired by MFS that is responsible for the proxy solicitation.

Computershare offers four convenient ways to vote:

1. By touch-tone telephone: toll-free at 1-800-337-3503

2. Via the Internet: www.proxy-direct.com

3. By returning the proxy card you receive by mail

4. By participating in the shareholder meeting on December 17, 2026

Further information and additional copies of the proxy statement, the accompanying Notice of a Special Meeting of Shareholders, and the proxy card are free and available upon request by calling Computershare at 1-866-920-6793 or by visiting www.proxy-direct.com/mfs-35349).

Please note: If you don’t vote now, you may continue to be contacted by Computershare.

Sincerely,

David L. DiLorenzo

 David L. DiLorenzo 

President

MFS^® Utilities Fund

MFS^® UTILITIES FUND

A series of MFS^® Series Trust VI

111 Huntington Avenue, Boston, Massachusetts 02199

IMPORTANT NOTICE OF A SPECIAL MEETING OF SHAREHOLDERS

TO BE HELD DECEMBER 17, 2026

A Special Meeting of Shareholders of MFS^® Utilities Fund (the "Fund"), a series of the MFS Series Trust VI (the "Trust"), a Massachusetts business trust, will be held on December 17, 2026, at 1:00 PM Eastern Time (the "Meeting") for the following purposes:

ITEM 1. To approve reclassifying the diversification status of the Fund under the Investment Company Act of 1940, as amended, from "diversified" to "non-diversified".

ITEM 2. To transact such other business as may properly come before the Meeting and any adjournment(s) or postponements thereof.

THE BOARD OF TRUSTEES UNANIMOUSLY RECOMMENDS

THAT YOU VOTE FOR ITEM 1.

Only the Fund's shareholders of record as of September 24, 2026 (the "Record Date") will be entitled to vote at its Meeting of Shareholders. Your vote is important. Whether or not you expect to attend the Meeting, please follow the steps listed on the enclosed proxy card to vote.

      By order of the Board of Trustees,

      Christopher R. Bohane

      Christopher R. Bohane

      Assistant Secretary and Assistant Clerk

October 20, 2026

YOUR VOTE IS IMPORTANT. IF YOU DO NOT EXPECT TO ATTEND THE MEETING, THEN PLEASE RECORD YOUR VOTING INSTRUCTIONS BY TELEPHONE OR VIA THE INTERNET BY FOLLOWING THE INSTRUCTIONS LISTED ON YOUR NOTICE OF INTERNET AVAILABILITY OF PROXY MATERIALS OR, IF YOU HAVE REQUESTED A PROXY CARD BY MAIL, YOU MAY VOTE BY COMPLETING, SIGNING, DATING AND RETURNING THE PROXY CARD. IF YOU VOTE BY TELEPHONE OR VIA THE INTERNET, YOU WILL BE ASKED TO ENTER A UNIQUE CODE THAT HAS BEEN ASSIGNED TO YOU, WHICH IS PRINTED ON THE NOTICE OF INTERNET AVAILABILITY OF PROXY MATERIALS OR YOUR PROXY CARD. THIS CODE IS DESIGNED TO CONFIRM YOUR IDENTITY, PROVIDE ACCESS TO THE VOTING SITE AND CONFIRM THAT YOUR INSTRUCTIONS ARE PROPERLY RECORDED. IF YOU HAVE ANY QUESTIONS REGARDING THE PROXY STATEMENT, PLEASE CALL 1-866-920-6793. PLEASE GIVE YOUR VOTING INSTRUCTIONS OR SUBMIT YOUR PROXY CARD PROMPTLY SO THAT IT IS RECEIVED BY THE DATE OF THE MEETING, WHICH WILL HELP AVOID THE ADDITIONAL EXPENSE OF A SECOND SOLICITATION FOR YOUR TRUST.

This Proxy Statement relates to the proposal to reclassify the diversification status of MFS^® Utilities Fund (the "Fund"), a series of MFS Series Trust VI (the “Trust”), from “diversified” to “non-diversified” under the Investment Company Act of 1940, as amended (the "1940 Act") (the "Proposal").

This Proxy Statement is being mailed to shareholders of the Fund on or about October 20, 2026.

All proxies solicited by the Board of Trustees of the Fund (the "Trustees") that are properly executed and received by the Secretary of the Fund prior to the Special Meeting of Shareholders of the Fund to be held on December 17, 2026 (the "Meeting"), and not revoked, will be voted at the Meeting.

For your vote to be counted it must be received by Computershare by 1:00 PM Eastern Time on December 17, 2026.

This Proxy Statement is available at www.proxy-direct.com/mfs-35349.

This Proxy Statement explains concisely what you should know before voting on the Fund’s proposed reclassification from a diversified fund to a non-diversified fund. Please read it carefully and retain it for future reference.

If there is anything you do not understand, please call the toll-free number, 1-866-920-6793, or contact your financial intermediary.

Instructions for Voting Proxies

The giving of a proxy will not affect a shareholder’s right to vote in person should the shareholder decide to attend the Meeting. Please refer to your proxy card or Notice of Internet Availability of Proxy Materials for instructions on voting by telephone or Internet. To record your vote via automated telephone service, call the toll-free number listed on your proxy card or follow the instructions found on the Notice of Internet Availability of Proxy Materials. When receiving your instructions by telephone, the representative may ask you for your full name and address to confirm that you have received the Notice of Internet Availability of Proxy Materials in the mail. If the information you provide matches the information provided to Computershare by the Trust, then a representative can record your instructions over the phone. To use the Internet, please access the Internet address listed on your proxy card and/or Notice of Internet Availability of Proxy Materials and follow the instructions on the website. As the meeting date approaches, you may receive a call from a representative of the Trust, Computershare, or its affiliates if the Trust has not yet received your vote. If you wish to participate in the Meeting, but do not wish to give a proxy by telephone or via the Internet, you can request a copy of a full set of proxy materials, which includes a proxy card and/or voting instructions. To vote proxies or submit voting instructions by mail, please mark, sign, date, and return the proxy card received with the Proxy Statement by following the instructions on the proxy card, or you can attend the Meeting in person.

What are shareholders being asked to vote on?

The Trustees are recommending that shareholders of the Fund approve the reclassification of the Fund's diversification status from diversified to non-diversified. As a diversified fund, the Fund is currently limited in its

percentage ownership of securities of any single issuer. If the reclassification is approved by shareholders, the Fund will not be subject to its current limitations and the Fund’s investment adviser, Massachusetts Financial Services Company (“MFS”), would have greater flexibility over time to increase or decrease positions in single issuers to reflect its relative risk expectations for these issuers. MFS believes that changing the Fund’s classification to a non-diversified fund will provide MFS with enhanced flexibility to actively manage the Fund’s portfolio holdings and potentially result in better investment performance.

 If shareholders approve the reclassification of the Fund as a non-diversified fund, the Fund’s fundamental investment policies regarding diversification of investments will be changed to reflect that the Fund is non-diversified. The Fund’s investment objective, strategy and other investment policies will remain unchanged.

What is the difference between a diversified fund and non-diversified fund?

Under Section 5(b) of the 1940 Act a fund must be classified as either diversified or non-diversified. The 1940 Act provides that a fund that is classified as diversified, with respect to 75% of its total assets, may not invest in a security if, as a result of such investment, more than 5% of its total assets (calculated at the time of purchase) would be invested in securities of any one issuer. Additionally, with respect to 75% of its total assets, a diversified fund may not hold more than 10% of the outstanding voting securities of any one issuer. These restrictions do not apply to U.S. government securities, securities of other investment companies, or cash and cash items (including receivables). A Government security is any security issued or guaranteed as to principal or interest by the United States, or by a person controlled or supervised by and acting as an instrumentality of the government of the United States pursuant to authority granted by the Congress of the United States, or any certificate of deposit for any of the forgoing. The remaining 25% of a diversified fund’s total assets are not subject to these limitations. In effect the aggregated total of single issuer positions of 5% or more cannot exceed 25% of a fund’s total assets. The above limitations applicable to diversified funds apply at the time of a fund’s investment in a security and, therefore, a fund is not required to sell a position in a security if the fund subsequently exceeds the diversification limits as a result of market movements, such as from the appreciation of a security or group of securities. In these instances, however, a diversified fund is restricted from purchasing any additional amount of such security until the fund’s portfolio is in compliance with the above diversification limits.

A non-diversified fund is not subject to these limitations and may therefore hold a greater percentage of its assets in the securities of a single issuer or small number of issuers. A non-diversified fund may freely establish an underweight position relative to the benchmark weight with respect to individual issuers with full confidence in the ability to repurchase the shares if the facts and fundamentals change. While a non-diversified fund is not subject to the diversification limitations under the 1940 Act, it is still subject to tax diversification requirements under the Internal Revenue Code of 1986 (the "Code") (please see below for more detail).

Why are shareholders being asked to approve a change in the Fund’s diversification classification?

The Fund's investment objective is to seek total return. MFS seeks to achieve the Fund’s objective by actively identifying potential investments based primarily on fundamental analysis and then constructing a portfolio within a risk aware framework compared to the Standard & Poor's 500 Utilities Index (the "Index").

Over the past several years, certain issuers in the utilities sector have experienced significant increases in market capitalization. Consequently, the Index has become much more concentrated in various individual issuers. As of July 31, 2026, issuer weightings over 5%, in aggregate, comprised 38.97% of the Index’s total weight. Specifically, as of July 31, 2026, the weightings of the following issuers represented over 5% of the Index: Nextera (13.1%), Southern Company (7.7%), Duke Energy (7.07%), Constellation Energy (6.07%), and American Electric Power (5.03%). Although levels of concentration have historically fluctuated in the Index, MFS believes that this market concentration is likely to continue.

In order to meet the requirements of the Fund’s current diversification status, MFS is limited in its ability to effectively manage the Fund’s current positions in certain issuers. Similar to the Index, the Fund’s portfolio has

gradually become more concentrated in a smaller number of issuers as a result of increases in the market capitalization of certain issuers. As of July 31, 2026, issuer weightings over 5%, in aggregate, comprised 30.84% of the Fund’s total assets. The Fund is not required to reduce these positions because they are the result of market appreciation subsequent to the Fund’s investment. However, MFS is limited in its ability to manage these positions in a manner that fully incorporates its current investment thesis or relative risk expectations for these issuers. Specifically, MFS is currently limited to only being able to reduce its more concentrated positions and, therefore, is unable to freely adjust these positions upward or downward relative to the Index and to reflect MFS’ long-term outlook of an issuer’s fundamentals. The Fund is actively managed and does not seek to track the holdings or issuer weightings of the Index and, therefore, if the proposal is approved by the Fund’s shareholders, the Fund may seek to hold overweight or underweight positions in specific issuers relative to the Index based on MFS’ long-term risk and return expectations for a particular issuer.

MFS believes that reclassifying the Fund as a non-diversified fund is in the best interest of the Fund and its shareholders and will provide MFS with increased investment flexibility over time to adjust individual positions based on MFS’ relative risk expectations for these issuers and the potential for better investment performance.

The Trustees, including the Trustees who are not interested persons of the Fund (as defined in the 1940 Act), unanimously recommend approval of the proposal. In considering the proposal, the Trustees took into account, among other things, MFS’ recommendation and the supporting materials prepared by MFS and presented to the Board. In recommending that shareholders approve the proposal, the Trustees considered a number of factors including, but not limited to, the potential benefits to the Fund from operating as a non-diversified fund, including the increased flexibility afforded to MFS to actively manage the Fund's portfolio holdings. The Trustees considered the risks associated with the proposal, including those risks that relate to the Fund’s investments potentially becoming more concentrated in a smaller number of issuers. The Trustees also considered the anticipated costs to the Fund of the proposal, including costs for proxy solicitation, if needed, and the costs associated with potential portfolio repositioning, if any. The Trustees did not identify any single factor as determinative in their analysis, but rather the Trustees considered a variety of factors, including those discussed above. The Trustees did not allot a particular weight to any one factor or group of factors.

As noted above, if shareholders approve the reclassification of the Fund to a non-diversified fund, the Fund’s fundamental investment policies regarding diversification of investments will be changed to reflect that the Fund is non-diversified. The Fund’s other investment policies will remain unchanged, including the Fund’s policy concerning industry concentration.

Who is eligible to vote?

Only shareholders of the Fund as of the close of business on September 24, 2026 (the "Record Date"), will be entitled to vote or give voting instructions at the Meeting. Each shareholder of record is entitled to one vote for each dollar of net asset value of shares held by that shareholder on the Record Date (i.e., number of shares owned times net asset value per share), with fractional dollar amounts voting proportionally.

Will the reclassification have tax consequences for the Fund?

Approval of this Proposal will not affect the Fund’s ability to comply with the diversification and other requirements of the Code, which are applicable to the Fund so that the Fund will not be subject to U.S. federal income taxes on its net investment income. In this regard, the applicable diversification requirements imposed by the Code provide that the Fund must diversify its holdings so that at the end of each quarter of the Fund’s taxable year (i) at least 50% of the market value of the Fund’s total assets is represented by cash and cash items, U.S. government securities, the securities of other regulated investment companies and other securities, with such other securities of any one issuer limited for purposes of this calculation to an amount not greater than 5% of the value of the Fund’s total assets and not more than 10% of the outstanding voting securities of such issuer, and (ii) not more than 25% of the value of the Fund’s total assets is invested in (x) the securities of any one issuer or of two or more issuers which the Fund controls and which are engaged in the same, similar, or related trades or businesses (other than U.S. government securities or the securities of other regulated investment companies) or (y) in the securities of one or more publicly traded partnerships.

Will the reclassification expose the Fund to greater risk?

MFS believes moving to a non-diversified classification will enhance the Fund’s ability to manage portfolio risk and may potentially decrease overall portfolio risk by enabling MFS to adjust individual positions based on MFS’ relative risk expectations for these issuers. As discussed above, a non-diversified fund may therefore concentrate a greater percentage of its assets in the securities of a single issuer or small number of issuers than a diversified fund. While MFS does not anticipate any material change to the Fund’s investment approach as a result of the Fund’s change in diversification status, there are, however, certain risks which accompany the potential to concentrate investments in a small number of issuers. Concentration of investments in a smaller number of issuers exposes a fund to the risks associated with such issuers to a greater extent than a fund invested in a larger number of issuers. Poor performance by any one of these issuers could adversely affect a non-diversified fund to a greater extent than a more broadly diversified fund. While investing a larger portion of the Fund’s assets in the stocks of fewer issuers may prove beneficial when such issuers outperform the market, larger investments in the stocks of fewer issuers may also magnify any negative or under-performance by such issuers. In general, because the Fund’s performance may become more closely tied to the value of a single issuer or small number of issuers, it is likely to become more volatile than the performance of more diversified funds. However, MFS believes these additional risks are outweighed by the potential for improved performance and greater flexibility afforded to MFS. As discussed above, there have been significant increases in the market capitalization of certain utilities issuers currently held by the Fund. The limitations imposed on diversified funds under the 1940 Act limit MFS’ ability to effectively manage these positions. We believe moving to a non-diversified classification will enhance the Fund’s ability to manage portfolio risk and may potentially decrease overall portfolio risk by enabling MFS to adjust individual positions based on MFS’ relative risk expectations for these issuers.

Who manages the Fund?

MFS is the investment adviser and administrator for the Fund. MFS, located at 111 Huntington Avenue, Boston, Massachusetts, is America’s oldest mutual fund organization. MFS and its predecessor organizations have a history of money management dating back to 1924 and the founding of the first mutual fund, Massachusetts Investors Trust. MFS’ net assets under management were approximately $[TBU] billion as of [TBU]. The Fund's principal underwriter is MFS Fund Distributors, Inc., located at 111 Huntington Avenue, Boston, Massachusetts 02199.

What are the costs associated with the reclassification?

 The cost associated with the reclassification of the Fund from a diversified fund to non-diversified fund are estimated to be approximately $975,000. This cost estimate includes estimated costs for printing, preparation, and mailing of the proxy materials and related shareholder communications. Additionally, this cost estimate includes estimated costs of approximately $440,000 to be paid to Computershare Trust Company, N.A. (“Computershare”) to provide shareholder solicitation services, vote tabulation services, and shareholder meeting services. The Fund shall bear the fees and expenses associated with the reclassification and such costs may increase substantially if this proposal is contested or increased solicitation or mailing services are required.

 To the extent portfolio securities are repositioned in connection with the change in classification from a diversified fund to a non-diversified fund, shareholders of the Fund will indirectly incur commissions and other transaction costs typically associated with the purchase and sale of securities. MFS expects that any immediate costs associated with repositioning of the Fund’s holdings as a result of the change to a non-diversified fund will be immaterial relative to the Fund’s net assets. MFS anticipates that any resulting changes to the Fund’s portfolio composition will occur over a period of time in response to MFS’ view of the performance potential and relative risk of an issuer in light of prevailing market conditions. These transactions may also generate taxable gains for shareholders, which will vary depending on the level of repositioning of the Fund’s holdings.

What if shareholders do not approve the reclassification?

If shareholders do not approve the Fund's reclassification from a diversified fund to non-diversified fund, there will be no changes made to the Fund's classification and the Fund will continue to operate as a diversified fund.

The Trustees, including the Trustees who are not interested persons of the Fund (as defined in the 1940 Act), unanimously recommend approval of the reclassification.

The Trustees know of no matters other than those set forth herein to be brought before the Meeting. If, however, any other matters properly come before the Meeting, it is the Trustees' intention that proxies will be voted on such matters in accordance with the judgement of the persons named in the enclosed form of proxy.

MORE INFORMATION ABOUT THE PROPOSAL

The reclassification will become effective only if approved by the affirmative vote of a “majority of the outstanding voting securities” of the Fund entitled to vote. Under the 1940 Act, the vote of a “majority of the outstanding voting securities” means the affirmative vote of the lesser of (a) 67% or more of the voting power of the securities present at the Meeting, or represented by proxy if the holders of more than 50% of the voting power of the outstanding voting securities are present or represented by proxy, or (b) more than 50% of the voting power of the outstanding voting securities.

Quorum, and Method of Tabulation. The holders of a majority of the voting power of the shares of the Fund as of the Record Date present at the Meeting or represented by proxy will constitute a quorum for the Meeting. Shareholders of record are entitled to one vote for each dollar of net asset value of the shares as of the Record Date (i.e., number of shares owned times net asset value per share), with fractional amounts voting proportionately.

Votes cast by proxy or at the Meeting will be counted by persons appointed by the Fund as the vote tabulators for the Meeting. The vote tabulators will count the total number of votes cast “for” approval of the Proposal for purposes of determining whether sufficient affirmative votes have been cast. The vote tabulators will count shares represented by proxies that are marked with an abstention and may count shares represented by proxies that reflect “broker non-votes” (i.e., shares held by brokers or nominees as to which (i) instructions have not been received from the beneficial owner or the persons entitled to vote and (ii) the broker or nominee does not have discretionary voting power on a particular matter) as shares that are present and entitled to vote on the matter for purposes of determining the presence of a quorum. Thus, abstentions will and broker non-votes may have the effect of a negative vote on the Proposal. The matter proposed in this proxy is deemed to be a “non-routine” vote.

Shares Outstanding. The number of shares of the Fund outstanding as of September 24, 2026, were as follows:

Share Ownership. As of September 24, 2026, the officers and Trustees, as a group, beneficially owned less than 1% of any class of the outstanding shares of the Fund.

To the best of the knowledge of the Fund, as of September 24, 2026, the following shareholders owned of record or beneficially 5% or more of the following classes of the Fund’s outstanding shares. All holdings are of record unless otherwise indicated.

[TBU]

To the best of the knowledge of the Fund, as of September 24, 2026, [TBU - there were no shareholders of record that owned 25% or more of the Fund’s outstanding shares].

Solicitation of Proxies.  The Trustees and employees of MFS, MFS Fund Distributors, Inc. and MFS Service Center, Inc. may solicit proxies in person or virtually, or by mail or telephone.  The Fund has engaged Computershare to provide shareholder meeting services as well as vote solicitation and tabulation services. A proxy may be revoked prior to its exercise by a signed writing filed with Computershare, c/o PO Box 43131, Providence, RI, 02940-3131, or by attending the Meeting and voting in person. It is anticipated that the cost of Computershare’s services will be approximately $440,000 and may increase substantially in the event that any vote is contested or increased solicitation efforts are required. The Fund will incur additional costs associated with preparing, printing, and mailing proxy materials and related shareholder communications. Please refer to the section of this Proxy Statement entitled “What are the costs associated with the reclassification?” for further information concerning these and other costs associated with this proposal.

The Fund may arrange to have votes recorded by telephone. The telephonic voting procedure is designed to authenticate shareholders’ identities, to allow shareholders to authorize the voting of their shares in accordance with their instructions and to confirm that their instructions have been properly recorded. Shareholders will be asked for their Social Security numbers or other identifying information. The shareholders will then be given an opportunity to authorize their proxies to vote their shares in accordance with their instructions. To ensure the shareholders’ instructions have been recorded correctly, they will also receive a confirmation of their instructions in the mail. A toll-free number will be available in the event the information in the confirmation is incorrect.

Shareholders have the opportunity to vote via the Internet as directed on your Notice of Internet Availability of Proxy Materials.  The giving of such a proxy will not affect your right to vote at the Meeting should you decide to attend.  To vote via the Internet, you will need the “control” number that appears on your proxy card.  The Internet voting procedures are designed to authenticate shareholder identities, to allow shareholders to give their voting instructions and to confirm that shareholders’ instructions have been recorded properly.  Shareholders voting via the Internet should understand that there may be costs associated with electronic access, such as usage charges from Internet access providers and telephone companies, that must be borne by the shareholders and not the Fund.

To vote proxies or submit voting instructions by mail, please mark, sign, date and return the proxy card received with the Proxy Statement by following the instructions printed on the proxy card, or you can attend the Meeting in person. Persons holding shares as nominees will upon request be reimbursed by the Fund for their reasonable expenses in soliciting instructions from their principals.

Revocation of Proxies.  Proxies, including proxies given by telephone or via the Internet, may be revoked at any time before the Meeting, by a written revocation received by the Secretary of the Fund or by properly executing a later-dated proxy or by attending the Meeting and voting.

Shareholder Proposals.  The Trust is a Massachusetts business trust and, as such, is not required to hold annual meetings of shareholders. However, the Trustees may from time-to-time schedule special meetings of shareholders. Any shareholder who wishes to submit a proposal to be considered by the Fund’s shareholders at the next meeting of shareholders should send the proposal to MFS^® Utilities Fund, c/o Christopher R. Bohane, Assistant Secretary, at 111 Huntington Avenue, 21st Floor, Boston, Massachusetts 02199, so as to be received within a reasonable time before the Board of Trustees makes the solicitation relating to such meeting.  The submission by a shareholder of a proposal for inclusion in the proxy materials does not guarantee that it will be included.  Shareholder proposals are subject to certain requirements under the federal securities laws.

Adjournment.  If the necessary quorum to transact business is not present or sufficient votes in favor of the Proposal are not received by the time scheduled for the Meeting, the persons named as proxies may propose adjournments of the Meeting to permit further solicitation of proxies.  Any adjournment will require the affirmative vote of a majority of the voting power of the outstanding shares entitled to vote on the question by proxy or present at the Meeting to be adjourned.  The persons named as proxies will vote in favor of such adjournment those proxies which they are entitled to vote in favor of the Proposal.  They will vote against any such adjournment those proxies required to be voted against the Proposal.  They will not vote any proxy that directs them to abstain from voting on the Proposal.  The Fund will pay the costs of any additional solicitation and of any adjourned session. 

MISCELLANEOUS

Available Information

A copy of the Fund's most recent prospectus, annual and semiannual shareholder reports, and Statement of Additional Information are available at no cost by visiting the Fund's website at mfs.com/openendfunds; by calling (800) 225-2606; or by writing to MFS Service Center Inc., P.O. Box 219341, Kansas City, MO 64121-9341.

Other Business

Management of the Fund knows of no business other than the matters specified above that will be presented at the Meeting.  Because matters not known at the time of the solicitation may come before the Meeting, the proxy as solicited confers discretionary authority with respect to such matters as properly come before the Meeting, including any adjournment or adjournments thereof and it is the intention of the persons named in the enclosed form of proxy to vote this proxy in accordance with their judgment on such matters.

Notice of Internet Availability of Proxy Materials for a household

Only one copy of the Notice of Internet Availability of Proxy Materials may be mailed to a household, even if more than one person in a household is a Fund shareholder of record, unless the Fund has received contrary instructions from one or more of the shareholders. If you need additional copies of the Notice of Internet Availability of Proxy Materials and you are a holder of record of your shares, please call 1-866-920-6793. If your shares are held in broker street name, please contact your financial service firm to obtain additional copies of the Notice of Internet Availability of Proxy Materials. Additional copies of the Notice of Internet Availability of Proxy Materials will be delivered promptly upon request. If in the future you do not want the mailing of notices of internet availability of proxy materials, proxy statements and information statements to be combined with those of other members of your household, or if you have received multiple copies of the Notice of Internet Availability of Proxy Materials and want future mailings to be combined with those of other members of your household, please contact MFS in writing at

Massachusetts Financial Services Company, 111 Huntington Avenue, Boston, Massachusetts 02199, or by telephone at 800-225-2606, or contact your financial service firm.

IT IS IMPORTANT THAT PROXIES BE RETURNED PROMPTLY.

Notice to Banks, Broker-Dealers and Voting Trustees and Their Nominees.

Please advise MFS^® Utilities Fund, in care of MFS Service Center, Inc., P.O. Box 219341, Kansas City, MO 64121-9341, whether other persons are beneficial owners of shares for which proxies are being solicited and, if so, the number of copies of the Proxy Statement you wish to receive in order to supply copies to the beneficial owners of the shares.

October 20, 2026

MFS^® UTILITIES FUND, a series of

MFS^® SERIES TRUST VI

111 Huntington Avenue

Boston, Massachusetts 02199