Form SCHEDULE 13G/A MFS HIGH YIELD MUNICIPAL Filed by: JPMorgan Chase Bank, N.A.

SCHEDULE 13G

CUSIP No.

1

Names of Reporting Persons

JPMorgan Chase Bank, National Association

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 330.00
7	Sole Dispositive Power 330.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

330.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

100 %

12

Type of Reporting Person (See Instructions)

BK

SCHEDULE 13G

Item 1.

(a)

Name of issuer:

MFS High Yield Municipal Trust

(b)

Address of issuer's principal executive offices:

111 Huntington Avenue, 24th Floor Boston, MA 02199

Item 2.

(a)

Name of person filing:

JPMorgan Chase Bank, National Association ("JPM")

(b)

Address or principal business office or, if none, residence:

1111 Polaris Parkway Columbus, OH 43240

(c)

Citizenship:

United States of America

(d)

Title of class of securities:

Remarketable Variable Rate MuniFund Term Preferred Shares, Series 2051

(e)

CUSIP No.:

Item 3.

If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:

(a)

Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);

(b)

Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);

(c)

Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);

(d)

Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);

(e)

An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);

(f)

An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);

(g)

A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);

(h)

A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);

(i)

A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);

(j)

A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J),
please specify the type of institution:

(k)

Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).

Item 4.

Ownership

(a)

Amount beneficially owned:

330

(b)

Percent of class:

100%* * Represents percentage ownership of RVMTP Shares as a percentage of all preferred shares outstanding and is calculated based on information suppled by the issuer. %

(c)

Number of shares as to which the person has:

(i) Sole power to vote or to direct the vote:

0

(ii) Shared power to vote or to direct the vote:

330** ** On July 20, 2021 JPM assigned certain preferred class voting rights on the RVMTP Shares to a voting trust (the "Voting Trust") created pursuant to the Voting Trust Agreement, dated July 20, 2021 among JPM, Glass, Lewis & Co., LLC, as trustee (the "Voting Trustee") and as voting consultant (the "Voting Consultant"). Voting and consent rights on the RVMTP Shares not assigned to the Voting Trust have been retained by JPM. The Voting Trust provides that with respect to voting or consent matters relating to the voting rights assigned to the Voting Trust, the Voting Consultant analyzes such voting or consent matters and makes a recommendation to the Voting Trustee on voting or consenting. The Voting Trustee is obligated to follow any such recommendations of the Voting Consultant when providing a vote or consent.

(iii) Sole power to dispose or to direct the disposition of:

330

(iv) Shared power to dispose or to direct the disposition of:

0

Item 6.

Ownership of more than 5 Percent on Behalf of Another Person.

If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required.

On September 5, 2024 JPM deposited the 510 RVMTP Shares into a tender option bond trust (a "TOB") named the J.P. Morgan Putters/Drivers, Series 5074 Trust. The TOB has title to 100% of the RVMTP Shares but does not have the power to dispose or direct the disposition of the RVMTP Shares. No voting rights on the RVMTP Shares have been transferred to the TOB and voting rights on the RVMTP Shares are retained by JPM and the Voting Trust as described in Item 4.

Item 7.

Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.

Not Applicable

Item 8.

Identification and Classification of Members of the Group.

Not Applicable

Item 9.

Notice of Dissolution of Group.

Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

JPMorgan Chase Bank, National Association

Signature:	/s/ Adrian Budischak
Name/Title:	Adrian Budischak / Authorized Signatory
Date:	05/05/2026

Form SCHEDULE 13G/A MFS HIGH YIELD MUNICIPAL Filed by: JPMorgan Chase Bank, N.A.

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