# MFS SERIES TRUST I — DEFA14A

MFS SERIES TRUST I of BOSTON, MA filed a DEFA14A with the SEC on 2001-09-20.

## Filing

- Filed: 2001-09-20
- Form: DEFA14A
- Accession: 0000912938-01-500291
- Registrant: MFS SERIES TRUST I
- CIK: 0000798244
- State of incorporation: MA
- Location: BOSTON, MA

## Documents (1)

| Seq | Type | Description |
| --- | --- | --- |
| 1 | DEFA14A | ADDITIONAL PROXY MATERIALS |

## Filing timeline for this registrant (11)

| Filed | Form |
| --- | --- |
| [2006-07-21](https://search.stillhousedata.com/proxy/0000950156-06-000305) | DEFA14A |
| [2006-06-14](https://search.stillhousedata.com/proxy/0000950156-06-000258) | DEFA14A |
| [2006-06-14](https://search.stillhousedata.com/proxy/0000950156-06-000257) | DEF 14A |
| [2006-05-26](https://search.stillhousedata.com/proxy/0000950156-06-000206) | PRE 14A |
| [2003-07-14](https://search.stillhousedata.com/proxy/0000912938-03-000287) | DEFA14A |
| [2001-10-03](https://search.stillhousedata.com/proxy/0000912938-01-500327) | DEFA14A |
| 2001-09-20 | DEFA14A |
| [2001-09-13](https://search.stillhousedata.com/proxy/0000950156-01-500389) | DEFS14A |
| [2001-08-09](https://search.stillhousedata.com/proxy/0000950156-01-500284) | PRES14A |
| [1997-10-20](https://search.stillhousedata.com/proxy/0000912938-97-000379) | DEFS14A |
| [1997-10-09](https://search.stillhousedata.com/proxy/0000912938-97-000373) | PRES14A |

## Co-filers (2)

- MFS SERIES TRUST II
- MFS SERIES TRUST VI

## More

- [CIK 798244 on SEC EDGAR (source of record)](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=798244&type=&dateb=&owner=include&count=40)
- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/proxy/0000912938-01-500291.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.