MFS HIGH YIELD MUNICIPAL TRUST — Director's Dealing 2021

Jul 22, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MFS HIGH YIELD MUNICIPAL TRUST (CMU)
CIK: 0000809844
Period of Report: 2021-07-20

Reporting Person: CITIGROUP INC (10% Owner)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-07-20	Variable Rate Municipal Term Preferred Shares, Series 2019/3	J	3000	$25000.00	Disposed	0	Indirect

Footnotes

F1: All Variable Rate Municipal Term Preferred Shares, Series 2019/3 ("Series 2019/3 VMTP Shares") of the Fund have been called for redemption
by the issuer on July 20, 2021.

F2: These Series 2019/3 VMTP Shares are beneficially owned by Citibank, N.A. ("Citibank"). Citicorp LLC ("Citicorp") is the sole stockholder of
Citibank. Citigroup Inc. is the sole stockholder of Citicorp.