MFS HIGH YIELD MUNICIPAL TRUST — All Filings
533 total filings on record
Public companies registered with the SEC are required to file periodic reports, disclosures, and notices throughout the year. The most important are the 10-K (annual report), 10-Q (quarterly report), and 8-K (material event notice). Use the filters below to narrow by form type.
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3
3/A
4
4/A
40-17G
424B3
497
8-K
DEF 14A
DEFA14A
DEFR14A
N-2
N-2/A
N-23C-2
N-30D
N-CEN
N-CSR
N-CSRS
N-PX
N-Q
NPORT-EX
NPORT-P
NSAR-A
NSAR-A/A
NSAR-B
NSAR-B/A
POS AMI
PRE 14A
SC 13D
SC 13D/A
SC 13G
SC 13G/A
SC TO-C
SC TO-I
SC TO-I/A
SCHEDULE 13D/A
SCHEDULE 13G
SCHEDULE 13G/A
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| SC TO-C | — | 0000930413-26-000673 | Mar 4, 2026 | — |
| SCHEDULE 13G | — | 0001596468-26-000005 | Feb 17, 2026 | — |
| N-CEN | — | 0001410368-26-011191 | Feb 12, 2026 | Nov 30, 2025 |
| NPORT-P | — | 0001410368-26-007032 | Jan 26, 2026 | Nov 30, 2025 |
| 4/A | — | 0001398344-26-001140 | Jan 23, 2026 | Jan 20, 2026 |
| N-CSR | MFS HIGH YIELD MUNICIPAL TRUST (CMU) NCSR | 0001193125-26-020487 | Jan 23, 2026 | Nov 30, 2025 |
| 4 | — | 0001398344-26-001051 | Jan 22, 2026 | Jan 20, 2026 |
| 3 | PRIMARY DOCUMENT | 0002104444-26-000009 | Jan 9, 2026 | Jan 1, 2026 |
| SCHEDULE 13D/A | — | 0001398344-25-022559 | Dec 16, 2025 | — |
| 4 | PRIMARY DOCUMENT | 0001253367-25-000013 | Dec 11, 2025 | Jun 1, 2025 |
| SCHEDULE 13G | — | 0001596468-25-000021 | Nov 14, 2025 | — |
| SCHEDULE 13D/A | — | 0001398344-25-020988 | Nov 14, 2025 | — |
| NPORT-P | — | 0001410368-25-017032 | Oct 24, 2025 | Aug 31, 2025 |
| SCHEDULE 13G/A | — | 0001398344-25-018955 | Oct 7, 2025 | — |
| 4 | PRIMARY DOCUMENT | 0001287963-25-000014 | Oct 6, 2025 | Apr 2, 2025 |
| SCHEDULE 13G/A | — | 0000897101-25-000549 | Oct 2, 2025 | — |
| SCHEDULE 13D/A | — | 0001398344-25-017036 | Aug 28, 2025 | — |
| N-PX | — | 0001104659-25-084710 | Aug 28, 2025 | Jun 30, 2025 |
| N-CSRS | MFS HIGH YIELD MUNICIPAL TRUST (CMU) NCSRS | 0001683863-25-006220 | Jul 28, 2025 | May 31, 2025 |
| NPORT-P | — | 0001752724-25-177388 | Jul 25, 2025 | May 31, 2025 |
| SCHEDULE 13D/A | — | 0001398344-25-013224 | Jul 16, 2025 | — |
| 4 | PRIMARY DOCUMENT | 0002050280-25-000010 | Jun 27, 2025 | Sep 30, 2024 |
| SCHEDULE 13G/A | — | 0001398344-25-009501 | May 15, 2025 | — |
| NPORT-P | — | 0001752724-25-089112 | Apr 24, 2025 | Feb 28, 2025 |
| SCHEDULE 13G/A | — | 0001072613-25-000267 | Apr 4, 2025 | — |
| 3 | — | 0001398344-25-002901 | Feb 14, 2025 | Feb 11, 2025 |
| SCHEDULE 13D/A | — | 0001398344-25-002897 | Feb 14, 2025 | — |
| N-CEN | — | 0001752724-25-022251 | Feb 11, 2025 | Nov 30, 2024 |
| N-CSR | MFS HIGH YIELD MUNICIPAL TRUST NCSR | 0001683863-25-000340 | Jan 27, 2025 | Nov 30, 2024 |
| NPORT-P | — | 0001752724-25-011706 | Jan 24, 2025 | Nov 30, 2024 |
| 4 | PRIMARY DOCUMENT | 0001700264-25-000051 | Jan 23, 2025 | Jul 15, 2024 |
| 3 | PRIMARY DOCUMENT | 0001700264-25-000041 | Jan 8, 2025 | Jan 1, 2025 |
| 3 | PRIMARY DOCUMENT | 0001700264-25-000032 | Jan 8, 2025 | Jan 1, 2025 |
| 3 | PRIMARY DOCUMENT | 0001700264-25-000023 | Jan 8, 2025 | Jan 1, 2025 |
| 3 | PRIMARY DOCUMENT | 0001700264-25-000014 | Jan 8, 2025 | Jan 1, 2025 |
| 3 | PRIMARY DOCUMENT | 0001700264-25-000007 | Jan 8, 2025 | Jan 1, 2025 |
| SCHEDULE 13G | — | 0000897101-25-000031 | Jan 3, 2025 | — |
| SC 13G | — | 0001398344-24-020905 | Nov 14, 2024 | — |
| SC 13G | CITY OF LONDON INVESTMENT MGT CO LTD / MFS HIGH YIELD MUNI - SCH13G | 0001072613-24-000874 | Nov 14, 2024 | — |
| NPORT-P | — | 0001752724-24-237087 | Oct 25, 2024 | Aug 31, 2024 |
| 4 | PRIMARY DOCUMENT | 0001700264-24-000034 | Oct 1, 2024 | Mar 31, 2024 |
| SC 13G/A | SC 13G/A | 0001193125-24-229705 | Oct 1, 2024 | — |
| 3 | PRIMARY DOCUMENT | 0001700264-24-000028 | Sep 19, 2024 | Apr 1, 2024 |
| 4 | PRIMARY DOCUMENT | 0001700264-24-000019 | Sep 18, 2024 | Mar 18, 2024 |
| 4 | 4 | 0000950170-24-106510 | Sep 13, 2024 | Sep 5, 2024 |
| SC 13G/A | SC 13G/A | 0001193125-24-212045 | Sep 3, 2024 | — |
| 4 | 4 | 0000950170-24-102765 | Sep 3, 2024 | Aug 30, 2024 |
| N-PX | — | 0001104659-24-093465 | Aug 27, 2024 | Jun 30, 2024 |
| 4 | 4 | 0000950170-24-091547 | Aug 6, 2024 | Aug 2, 2024 |
| NPORT-P | — | 0001752724-24-163578 | Jul 25, 2024 | May 31, 2024 |