Mfs High Yield Municipal Trust (CMU)

CIK 809844 · operating company. SEC filings, financial statements, 10-K sections, 8-K items and insider trades for Mfs High Yield Municipal Trust.

Recent SEC filings

FiledFormAccession number
Aug 26, 2026N-PX0001104659-26-101104
Aug 21, 2026SCHEDULE 13G/A0002073679-26-000107
Aug 11, 202640001224071-26-000009
Jul 28, 2026N-CSRS0001193125-26-319003
Jul 27, 2026NPORT-P0001410368-26-075375
Jul 1, 2026SCHEDULE 13G/A0001193125-26-291608
Jun 29, 202640-17G0000912938-26-000718
Jun 9, 202640001193125-26-263931
Jun 8, 202625-NSE0000876661-26-000512
May 18, 2026SCHEDULE 13G/A0002073679-26-000069
May 15, 2026SCHEDULE 13G/A0001398344-26-009265
May 12, 2026SCHEDULE 13D/A0001398344-26-009013
May 11, 2026SC TO-I/A0000930413-26-001549
May 6, 2026SC TO-I/A0000930413-26-001497
May 5, 2026SCHEDULE 13D/A0001398344-26-008398
May 5, 202640001193125-26-206266
May 5, 2026SCHEDULE 13G/A0001193125-26-206592
May 1, 2026SCHEDULE 13D/A0001398344-26-008113
Apr 27, 2026SCHEDULE 13D/A0001398344-26-007324
Apr 24, 2026NPORT-P0001410368-26-040084
Apr 9, 2026SCHEDULE 13D/A0001398344-26-006342
Apr 6, 2026SC TO-I0000930413-26-000980
Apr 1, 202640001244199-26-000006
Apr 1, 2026N-23C-20000930413-26-000960
Mar 4, 2026SC TO-C0000930413-26-000673