SCHEDULE 13G/A

MFS INVT GRADE MUN TR

Common Stock · CUSIP: 59318B108

Event date: 2025-09-30

Reporting persons may disclose overlapping interests. Their amounts are shown individually and are not added into a filing total.

Filing-level shares

Unavailable

Percent of class

Unavailable

• Sit Investment Associates, Inc.

  Shares: 389,422.00 · Class: 4.8%

• Sit Fixed Income Advisors II, LLC

  Shares: 389,422.00 · Class: 4.8%

Amounts are as disclosed in this filing. Schedule type alone does not establish investment intent.