MFS HIGH YIELD MUNICIPAL TRUST - CMU
All tracked SEC files for this issuer. Showing up to 200 latest records.
Need parsed ownership details (13D/13G with shares/percent)?
Open ownership details
Form 4 = insider transactions report. Form 144 = notice of proposed sale (not a completed trade confirmation).
Files summary
Total files loaded: 15
Latest filed: May 18, 2026
| Form | Count |
|---|---|
| SCHEDULE 13D/A | 6 |
| 4 | 4 |
| SCHEDULE 13G/A | 3 |
| SCHEDULE 13G | 1 |
| 4/A | 1 |
Latest files
| Filed | Form | Report period | Accession | SEC |
|---|---|---|---|---|
| May 18, 2026 | SCHEDULE 13G/A | — | 0002073679-26-000069 | View |
| May 15, 2026 | SCHEDULE 13G/A | — | 0001398344-26-009265 | View |
| May 12, 2026 | SCHEDULE 13D/A | — | 0001398344-26-009013 | View |
| May 05, 2026 | 4 | May 01, 2026 | 0001193125-26-206266 | View |
| May 05, 2026 | SCHEDULE 13G/A | — | 0001193125-26-206592 | View |
| May 05, 2026 | SCHEDULE 13D/A | — | 0001398344-26-008398 | View |
| May 01, 2026 | SCHEDULE 13D/A | — | 0001398344-26-008113 | View |
| Apr 27, 2026 | SCHEDULE 13D/A | — | 0001398344-26-007324 | View |
| Apr 09, 2026 | SCHEDULE 13D/A | — | 0001398344-26-006342 | View |
| Apr 01, 2026 | 4 | Sep 30, 2025 | 0001244199-26-000006 | View |
| Feb 17, 2026 | SCHEDULE 13G | — | 0001596468-26-000005 | View |
| Jan 23, 2026 | 4/A | Jan 20, 2026 | 0001398344-26-001140 | View |
| Jan 22, 2026 | 4 | Jan 20, 2026 | 0001398344-26-001051 | View |
| Dec 16, 2025 | SCHEDULE 13D/A | — | 0001398344-25-022559 | View |
| Dec 11, 2025 | 4 | Jun 01, 2025 | 0001253367-25-000013 | View |