# MFS MUNICIPAL SERIES TRUST — new fund registration

MFS MUNICIPAL SERIES TRUST registered as a closed-end fund on Form 485APOS, filed 2006-11-16.

## Registration

- Registrant / trust: MFS MUNICIPAL SERIES TRUST
- CIK: 0000751656
- Form: 485APOS
- Filed: 2006-11-16
- State of incorporation: MA
- Accession: 0000950156-06-000573

## Other filings by this registrant (3)

- [485APOS — 2021-02-16 (4 new series)](https://search.stillhousedata.com/launch/0001104659-21-024097)
- [485APOS — 2010-05-27](https://search.stillhousedata.com/launch/0001193125-10-130424)
- [485APOS — 2007-05-29](https://search.stillhousedata.com/launch/0000950156-07-000373)

## More

- [Registrant profile: MFS MUNICIPAL SERIES TRUST](https://search.stillhousedata.com/registrant/751656)
- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/launch/0000950156-06-000573.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

---

Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.