# MFS SERIES TRUST I — new fund registration

MFS SERIES TRUST I registered as a closed-end fund on Form 485APOS, filed 2006-02-24.

## Registration

- Registrant / trust: MFS SERIES TRUST I
- CIK: 0000798244
- Form: 485APOS
- Filed: 2006-02-24
- State of incorporation: MA
- Accession: 0000950156-06-000045

## Other filings by this registrant (10)

- [485APOS — 2025-10-08](https://search.stillhousedata.com/launch/0000912938-25-000192)
- [485APOS — 2016-10-27](https://search.stillhousedata.com/launch/0001104659-16-152442)
- [485APOS — 2015-10-29](https://search.stillhousedata.com/launch/0001104659-15-073931)
- [485APOS — 2014-10-29](https://search.stillhousedata.com/launch/0001104659-14-074634)
- [485APOS — 2013-08-09 (18 new series)](https://search.stillhousedata.com/launch/0001104659-13-062108)
- [485APOS — 2011-06-30 (4 new series)](https://search.stillhousedata.com/launch/0001104659-11-037267)
- [485APOS — 2009-10-13](https://search.stillhousedata.com/launch/0001193125-09-206890)
- [485APOS — 2007-01-29](https://search.stillhousedata.com/launch/0000950156-07-000058)
- [485APOS — 2006-10-27](https://search.stillhousedata.com/launch/0000950156-06-000535)
- [485APOS — 2004-10-29](https://search.stillhousedata.com/launch/0000950156-04-000241)

## More

- [Registrant profile: MFS SERIES TRUST I](https://search.stillhousedata.com/registrant/798244)
- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/launch/0000950156-06-000045.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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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.