# EDGAR Filing Document

**Accession Number:** 0000035315
**File Stem:** 0000035315-25-001065
**Filing Date:** 2025-10
**Character Count:** 2032
**Document Hash:** b692493359ecb22e80f1ff319195b91f
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000035315-25-001065.hdr.sgml**: 20251024

**ACCESSION NUMBER**: 0000035315-25-001065

**CONFORMED SUBMISSION TYPE**: 497K

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20251024

**DATE AS OF CHANGE**: 20251024

**EFFECTIVENESS DATE**: 20251024

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** FIDELITY SALEM STREET TRUST
- **CENTRAL INDEX KEY:** 0000035315

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** MA
- **FISCAL YEAR END:** 0430

**FILING VALUES:**
- **FORM TYPE:** 497K
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 002-41839
- **FILM NUMBER:** 251415017

**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 FIXED INCOME TRUST
- **DATE OF NAME CHANGE:** 19920703

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** FIDELITY FLEXIBLE BOND FUND
- **DATE OF NAME CHANGE:** 19860904

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** FIDELITY CORPORATE BOND FUND INC
- **DATE OF NAME CHANGE:** 19851225

## Series and Classes Contracts Data

### Fidelity SAI Municipal Bond Index Fund (Series ID: S000065747)

| Class ID   | Class Name                             | Ticker Symbol   |
|:---|:---|:---|
| C000212595 | Fidelity SAI Municipal Bond Index Fund | FSABX           |

**Supplement to the Fidelity® SAI Municipal Bond Index Fund August 29, 2025 Summary Prospectus**

*On October 16, 2025, the Board of Trustees approved a plan of liquidation for Fidelity*® *SAI Municipal Bond Index Fund ("the fund"). Following Board approval, the fund will no longer pursue its stated investment objective and fund assets will be managed to provide for sufficient liquidity prior to liquidation. The fund is expected to liquidate on or about November 12, 2025.* 

MBX-SUSTK-1025-103 1.9900310.103 October 24, 2025