Entity type
Company
Filer Snapshot
MFS HIGH YIELD MUNICIPAL TRUST
CIK 0000809844. SEC filing timeline plus parsed ownership intelligence from 13F, 13D/G, and Forms 3/4/5 where available.
Total filings
25
Latest filing
05 May 2026
Industry
n/a
Filing-backed research brief
Start with the SEC data that changes for this CIK
Latest signal: SEC filing timeline only. Each card links back to the PortfolioSavvy page where the filing evidence is closest.
Latest 13F portfolio
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No parsed 13F portfolio row yet.
Browse latest 13FLargest parsed holding
—
Populates from the latest parsed 13F information table.
Open holding13D/G large stake
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No recent parsed 13D/G stake row for this CIK.
Browse 13D/GInsider / owner context
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No parsed Forms 3/4/5 owner position for this CIK.
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Source: SEC Forms 3/4/5
View Source Filing
4 filed on 05 May 2026 for CIK 0000809844.
- Trading symbols
- CMU on NYSE
- Business address
- 111 Huntington Avenue, 24 Th Floor, Boston, MA, 02199
- State of incorporation
- MA
- Fiscal year-end
- 30 November
- Former SEC names
- COLONIAL MUNICIPAL INCOME TRUST (to 02 May 2007)
Filer identity
1 identity field
SEC record
3 source fields
Filer intelligence
What SEC filings say about MFS HIGH YIELD MUNICIPAL TRUST
A compact read of parsed XML filings. 13F, 13D/G, and Forms 3/4/5 are shown separately because they answer different ownership questions.
SEC source mix
Counts show available parsed rows, not one combined ownership total.
13F portfolio
No rows yet
Quarterly institutional portfolio holdings.
13D/G stakes
No rows yet
Beneficial ownership and large-stake disclosures.
Forms 3/4/5
No rows yet
Officer, director, and 10% owner holdings or transactions.
No parsed ownership summary yet
We still show the SEC filing timeline below. The intelligence summary will populate when parsed 13F, 13D/G, or Forms 3/4/5 data exists for this CIK.
SEC filing record
CIK 0000809844 filing coverage
Start with this filing record, then use the linked ownership pages when parsed 13F, 13D/G, Forms 3/4/5, or facts data exists for this CIK.
SEC filings
25
First seen
22 Jul 2021
Latest filing
05 May 2026
Entity
Company
Observed form types
3
4
Latest Filings
Showing the latest 12 of 25 SEC filings for MFS HIGH YIELD MUNICIPAL TRUST.
4
4 filing
- Filing date
- 05 May 2026
- Reporting date
- 01 May 2026
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
4
4 filing
- Filing date
- 01 Apr 2026
- Reporting date
- 30 Sep 2025
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
4
4 filing
- Filing date
- 22 Jan 2026
- Reporting date
- 20 Jan 2026
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
3
3 filing
- Filing date
- 09 Jan 2026
- Reporting date
- 01 Jan 2026
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
4
4 filing
- Filing date
- 11 Dec 2025
- Reporting date
- 01 Jun 2025
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
4
4 filing
- Filing date
- 06 Oct 2025
- Reporting date
- 02 Apr 2025
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
4
4 filing
- Filing date
- 27 Jun 2025
- Reporting date
- 30 Sep 2024
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
3
3 filing
- Filing date
- 14 Feb 2025
- Reporting date
- 11 Feb 2025
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
4
4 filing
- Filing date
- 23 Jan 2025
- Reporting date
- 15 Jul 2024
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
3
3 filing
- Filing date
- 08 Jan 2025
- Reporting date
- 01 Jan 2025
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
3
3 filing
- Filing date
- 08 Jan 2025
- Reporting date
- 01 Jan 2025
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
3
3 filing
- Filing date
- 08 Jan 2025
- Reporting date
- 01 Jan 2025
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing