# EDGAR Filing Document

**Accession Number:** 0000707823
**File Stem:** 0000707823-23-000051
**Filing Date:** 2023-1
**Character Count:** 2191
**Document Hash:** 4cdebce5099bfd450bdeaa354496119c
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000707823-23-000051.hdr.sgml**: 20230127

**ACCESSION NUMBER**: 0000707823-23-000051

**CONFORMED SUBMISSION TYPE**: 497K

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20230127

**DATE AS OF CHANGE**: 20230127

**EFFECTIVENESS DATE**: 20230127

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** FIDELITY MT VERNON STREET TRUST
- **CENTRAL INDEX KEY:** 0000707823
- **IRS NUMBER:** 000000000
- **FISCAL YEAR END:** 1130

**FILING VALUES:**
- **FORM TYPE:** 497K
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 002-79755
- **FILM NUMBER:** 23560597

**BUSINESS ADDRESS:**
- **STREET 1:** 245 SUMMER STREET
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02210
- **BUSINESS PHONE:** 617-563-7000

**MAIL ADDRESS:**
- **STREET 1:** 245 SUMMER STREET
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02210

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** FIDELITY GROWTH COMPANY FUND
- **DATE OF NAME CHANGE:** 19910110

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** FIDELITY MERCURY FUND
- **DATE OF NAME CHANGE:** 19861216

## Series and Classes Contracts Data

### Fidelity Growth Company K6 Fund (Series ID: S000065696)

| Class ID   | Class Name                      | Ticker Symbol   |
|:---|:---|:---|
| C000212499 | Fidelity Growth Company K6 Fund | FGKFX           |

**Supplement to the**

**Fidelity® Growth Company K6 Fund**

**January 28, 2023**

**Summary Prospectus**

The Board of Trustees has approved, subject to shareholder approval, a proposal to reclassify Fidelity® Growth Company K6 Fund as non-diversified. A meeting of the shareholders of the fund is expected to be held early in the second quarter of 2023 to vote on this proposal. If approved, the changes will take effect on May 1, 2023, or the first day of the month following shareholder approval.

*Shareholders should read the proxy statement, which contains important information about the proposal, when it becomes available. For a free copy of the proxy statement, please contact Fidelity at 1-800-835-5092. The proxy statement will also be available on the Securities and Exchange Commission's website (www.sec.gov).*

GCF-K6-SUSTK-0123-101 1.9007581.101 January 28, 2023