# EDGAR Filing Document

**Accession Number:** 0000751199
**File Stem:** 0000751199-25-000371
**Filing Date:** 2025-12
**Character Count:** 1800
**Document Hash:** 8b459e3e22350b5fbd11c552de5bad33
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000751199-25-000371.hdr.sgml**: 20251212

**ACCESSION NUMBER**: 0000751199-25-000371

**CONFORMED SUBMISSION TYPE**: 497K

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20251212

**DATE AS OF CHANGE**: 20251212

**EFFECTIVENESS DATE**: 20251212

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** FIDELITY INCOME FUND /MA/
- **CENTRAL INDEX KEY:** 0000751199

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** MA
- **FISCAL YEAR END:** 0731

**FILING VALUES:**
- **FORM TYPE:** 497K
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 002-92661
- **FILM NUMBER:** 251566774

**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 MORTGAGE SECURITIES FUND
- **DATE OF NAME CHANGE:** 19851103

## Series and Classes Contracts Data

### Fidelity Total Bond K6 Fund (Series ID: S000057288)

| Class ID   | Class Name                  | Ticker Symbol   |
|:---|:---|:---|
| C000182864 | Fidelity Total Bond K6 Fund | FTKFX           |

**Supplement to the Fidelity® Total Bond K6 Fund October 30, 2025 Summary Prospectus**

*It is expected that Mr. O'Neil will transition off the fund effective on or about September 30, 2026. Julian Potenza will become a Co-Portfolio Manager for the fund effective April 1, 2026.*

Effective April 1, 2026, the following information supplements information found in the "Fund Summary" section under the "Portfolio Manager(s)" heading.

Julian Potenza (Co-Portfolio Manager) has managed the fund since 2026.

TBDK6-SUSTK-1225-102 1.9916331.102 December 12, 2025