RIVERNORTH CAPITAL MANAGEMENT, LLC - 30 Sep 2025 SCHEDULE 13G/A Report for MFS HIGH YIELD MUNICIPAL TRUST Shares of Beneficial Interest (CMU)

Filing Manager: RIVERNORTH CAPITAL MANAGEMENT, LLC
Reporting Manager: RIVERNORTH CAPITAL MANAGEMENT, LLC
Security: MFS HIGH YIELD MUNICIPAL TRUST Shares of Beneficial Interest
Symbol: CMU
Shares outstanding: 25,484,931 shares
Disclosed Ownership: 2,579,075 shares
Ownership: 10.1%
Form type: SCHEDULE 13G/A
Filing time: 07 Oct 2025, 15:43:31 UTC
Date of event: 30 Sep 2025
Previous filing: 15 May 2025
SEC: View on sec.gov

Reporting Managers (1)

Name	Ownership	Shares Owned	sole voting power	shared voting power	Signature	Title	CIK
RIVERNORTH CAPITAL MANAGEMENT, LLC	10.12%	2,579,075	2,579,075	0	/s/ Marcus Collins	Marcus Collins, General Counsel and Chief Compliance Officer