# EDGAR Filing Document

**Accession Number:** 0000035315
**File Stem:** 0000035315-25-000836
**Filing Date:** 2025-10
**Character Count:** 16402
**Document Hash:** 731a8eb4686cbfe8acdfe0f333e85ec0
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000035315-25-000836.hdr.sgml**: 20251001

**ACCESSION NUMBER**: 0000035315-25-000836

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20251001

**DATE AS OF CHANGE**: 20251001

**EFFECTIVENESS DATE**: 20251001

**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:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 002-41839
- **FILM NUMBER:** 251362736

**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 Intermediate Treasury Bond Index Fund (Series ID: S000017677)

---

|  |  |  |
|:---|:---|:---|
| Class Name                                     | Ticker Symbol | Class ID   |
| Fidelity Intermediate Treasury Bond Index Fund | FUAMX         | C000194654 |

---

### Fidelity Long-Term Treasury Bond Index Fund (Series ID: S000017678)

---

|  |  |  |
|:---|:---|:---|
| Class Name                                  | Ticker Symbol | Class ID   |
| Fidelity Long-Term Treasury Bond Index Fund | FNBGX         | C000194656 |

---

### Fidelity Short-Term Treasury Bond Index Fund (Series ID: S000017679)

---

|  |  |  |
|:---|:---|:---|
| Class Name                                   | Ticker Symbol | Class ID   |
| Fidelity Short-Term Treasury Bond Index Fund | FUMBX         | C000194658 |

---

### Fidelity Inflation-Protected Bond Index Fund (Series ID: S000037003)

---

|  |  |  |
|:---|:---|:---|
| Class Name                                   | Ticker Symbol | Class ID   |
| Fidelity Inflation-Protected Bond Index Fund | FIPDX         | C000113282 |

---

### Fidelity SAI Long-Term Treasury Bond Index Fund (Series ID: S000051138)

---

|  |  |  |
|:---|:---|:---|
| Class Name                                      | Ticker Symbol | Class ID   |
| Fidelity SAI Long-Term Treasury Bond Index Fund | FBLTX         | C000161035 |

---

### Fidelity SAI U.S. Treasury Bond Index Fund (Series ID: S000052911)

---

|  |  |  |
|:---|:---|:---|
| Class Name                                 | Ticker Symbol | Class ID   |
| Fidelity SAI U.S. Treasury Bond Index Fund | FUTBX         | C000166451 |

---

### Fidelity Series Long-Term Treasury Bond Index Fund (Series ID: S000054519)

---

|  |  |  |
|:---|:---|:---|
| Class Name                                         | Ticker Symbol | Class ID   |
| Fidelity Series Long-Term Treasury Bond Index Fund | FTLTX         | C000171137 |

---

### Fidelity International Bond Index Fund (Series ID: S000066711)

---

|  |  |  |
|:---|:---|:---|
| Class Name                             | Ticker Symbol | Class ID   |
| Fidelity International Bond Index Fund | FBIIX         | C000214977 |

---

### Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund (Series ID: S000072688)

---

|  |  |  |
|:---|:---|:---|
| Class Name                                                   | Ticker Symbol | Class ID   |
| Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund | FSTZX         | C000229123 |

---

### Fidelity Series 5+ Year Inflation-Protected Bond Index Fund (Series ID: S000072689)

---

|  |  |  |
|:---|:---|:---|
| Class Name                                                  | Ticker Symbol | Class ID   |
| Fidelity Series 5+ Year Inflation-Protected Bond Index Fund | FSTDX         | C000229124 |

---

### Fidelity SAI Inflation-Protected Bond Index Fund (Series ID: S000086560)

---

|  |  |  |
|:---|:---|:---|
| Class Name                                       | Ticker Symbol | Class ID   |
| Fidelity SAI Inflation-Protected Bond Index Fund | FSPWX         | C000252148 |

---

### Fidelity SAI Intermediate Treasury Bond Index Fund (Series ID: S000086561)

---

|  |  |  |
|:---|:---|:---|
| Class Name                                         | Ticker Symbol | Class ID   |
| Fidelity SAI Intermediate Treasury Bond Index Fund | FSIWX         | C000252149 |

---

### Fidelity SAI Short-Term Treasury Bond Index Fund (Series ID: S000086562)

---

|  |  |  |
|:---|:---|:---|
| Class Name                                       | Ticker Symbol | Class ID   |
| Fidelity SAI Short-Term Treasury Bond Index Fund | FSSWX         | C000252150 |

---

## Series and Classes Contracts Data

### Fidelity Intermediate Treasury Bond Index Fund (Series ID: S000017677)

| Class ID   | Class Name                                     | Ticker Symbol   |
|:---|:---|:---|
| C000194654 | Fidelity Intermediate Treasury Bond Index Fund | FUAMX           |

### Fidelity Long-Term Treasury Bond Index Fund (Series ID: S000017678)

| Class ID   | Class Name                                  | Ticker Symbol   |
|:---|:---|:---|
| C000194656 | Fidelity Long-Term Treasury Bond Index Fund | FNBGX           |

### Fidelity Short-Term Treasury Bond Index Fund (Series ID: S000017679)

| Class ID   | Class Name                                   | Ticker Symbol   |
|:---|:---|:---|
| C000194658 | Fidelity Short-Term Treasury Bond Index Fund | FUMBX           |

### Fidelity Inflation-Protected Bond Index Fund (Series ID: S000037003)

| Class ID   | Class Name                                   | Ticker Symbol   |
|:---|:---|:---|
| C000113282 | Fidelity Inflation-Protected Bond Index Fund | FIPDX           |

### Fidelity SAI Long-Term Treasury Bond Index Fund (Series ID: S000051138)

| Class ID   | Class Name                                      | Ticker Symbol   |
|:---|:---|:---|
| C000161035 | Fidelity SAI Long-Term Treasury Bond Index Fund | FBLTX           |

### Fidelity SAI U.S. Treasury Bond Index Fund (Series ID: S000052911)

| Class ID   | Class Name                                 | Ticker Symbol   |
|:---|:---|:---|
| C000166451 | Fidelity SAI U.S. Treasury Bond Index Fund | FUTBX           |

### Fidelity Series Long-Term Treasury Bond Index Fund (Series ID: S000054519)

| Class ID   | Class Name                                         | Ticker Symbol   |
|:---|:---|:---|
| C000171137 | Fidelity Series Long-Term Treasury Bond Index Fund | FTLTX           |

### Fidelity International Bond Index Fund (Series ID: S000066711)

| Class ID   | Class Name                             | Ticker Symbol   |
|:---|:---|:---|
| C000214977 | Fidelity International Bond Index Fund | FBIIX           |

### Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund (Series ID: S000072688)

| Class ID   | Class Name                                                   | Ticker Symbol   |
|:---|:---|:---|
| C000229123 | Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund | FSTZX           |

### Fidelity Series 5+ Year Inflation-Protected Bond Index Fund (Series ID: S000072689)

| Class ID   | Class Name                                                  | Ticker Symbol   |
|:---|:---|:---|
| C000229124 | Fidelity Series 5+ Year Inflation-Protected Bond Index Fund | FSTDX           |

### Fidelity SAI Inflation-Protected Bond Index Fund (Series ID: S000086560)

| Class ID   | Class Name                                       | Ticker Symbol   |
|:---|:---|:---|
| C000252148 | Fidelity SAI Inflation-Protected Bond Index Fund | FSPWX           |

### Fidelity SAI Intermediate Treasury Bond Index Fund (Series ID: S000086561)

| Class ID   | Class Name                                         | Ticker Symbol   |
|:---|:---|:---|
| C000252149 | Fidelity SAI Intermediate Treasury Bond Index Fund | FSIWX           |

### Fidelity SAI Short-Term Treasury Bond Index Fund (Series ID: S000086562)

| Class ID   | Class Name                                       | Ticker Symbol   |
|:---|:---|:---|
| C000252150 | Fidelity SAI Short-Term Treasury Bond Index Fund | FSSWX           |

**Supplement to the Fidelity® SAI Long-Term Treasury Bond Index Fund April 29, 2025 Prospectus**

The following information supplements information found in the "Fund Summary" section under the "Portfolio Manager(s)" heading.

Van Eswara (Co-Portfolio Manager) has managed the fund since 2025.

The following information supplements the biographical information found in the "Fund Management" section under the "Portfolio Manager(s)" heading.

Van Eswara is Co-Portfolio Manager of Fidelity® SAI Long-Term Treasury Bond Index Fund, which he has managed since 2025. He also manages other funds. Since joining Fidelity Investments in 2003, Mr. Eswara has worked as a trader and portfolio manager.

SV5-PSTK-1025-105 1.9879664.105 October 1, 2025

**Supplement to the Fidelity® SAI U.S. Treasury Bond Index Fund April 29, 2025 Prospectus**

The following information supplements information found in the "Fund Summary" section under the "Portfolio Manager(s)" heading.

Van Eswara (Co-Portfolio Manager) has managed the fund since 2025.

The following information supplements the biographical information found in the "Fund Management" section under the "Portfolio Manager(s)" heading.

Van Eswara is Co-Portfolio Manager of Fidelity® SAI U.S. Treasury Bond Index Fund, which he has managed since 2025. He also manages other funds. Since joining Fidelity Investments in 2003, Mr. Eswara has worked as a trader and portfolio manager.

UYB-PSTK-1025-104 1.9885356.104 October 1, 2025

**Supplement to the Fidelity® Intermediate Treasury Bond Index Fund, Fidelity® Long-Term Treasury Bond Index Fund, and Fidelity® Short-Term Treasury Bond Index Fund April 29, 2025 Prospectus**

The following information supplements information for Fidelity® Intermediate Treasury Bond Index Fund found in the "Fund Summary" section under the "Portfolio Manager(s)" heading.

Van Eswara (Co-Portfolio Manager) has managed the fund since 2025.

The following information supplements information for Fidelity® Long-Term Treasury Bond Index Fund found in the "Fund Summary" section under the "Portfolio Manager(s)" heading.

Van Eswara (Co-Portfolio Manager) has managed the fund since 2025.

The following information supplements information for Fidelity® Short-Term Treasury Bond Index Fund found in the "Fund Summary" section under the "Portfolio Manager(s)" heading.

Van Eswara (Co-Portfolio Manager) has managed the fund since 2025.

The following information supplements the biographical information found in the "Fund Management" section under the "Portfolio Manager(s)" heading.

Van Eswara is Co-Portfolio Manager of each fund, which he has managed since 2025. He also manages other funds. Since joining Fidelity Investments in 2003, Mr. Eswara has worked as a trader and portfolio manager.

LBX-I-PSTK-1025-103 1.9900297.103 October 1, 2025

**Supplement to the Fidelity® International Bond Index Fund March 1, 2025 Prospectus**

The following information supplements information found in the "Fund Summary" section under the "Portfolio Manager(s)" heading.

Van Eswara (Co-Portfolio Manager) has managed the fund since 2025.

The following information supplements the biographical information found in the "Fund Management" section under the "Portfolio Manager(s)" heading.

Van Eswara is Co-Portfolio Manager of Fidelity® International Bond Index Fund, which he has managed since 2025. He also manages other funds. Since joining Fidelity Investments in 2003, Mr. Eswara has worked as a trader and portfolio manager.

IBI-PSTK-1025-104 1.9900298.104 October 1, 2025

**Supplement to the Fidelity® Series 0-5 Year Inflation-Protected Bond Index Fund and Fidelity® Series 5+ Year Inflation-Protected Bond Index Fund March 1, 2025 Prospectus**

The following information supplements information for Fidelity® Series 0-5 Year Inflation-Protected Bond Index Fund found in the "Fund Summary" section under the "Portfolio Manager(s)" heading.

Van Eswara (Co-Portfolio Manager) has managed the fund since 2025.

The following information supplements information for Fidelity® Series 5+ Year Inflation-Protected Bond Index Fund found in the "Fund Summary" section under the "Portfolio Manager(s)" heading.

Van Eswara (Co-Portfolio Manager) has managed the fund since 2025.

The following information supplements the biographical information found in the "Fund Management" section under the "Portfolio Manager(s)" heading.

Van Eswara is Co-Portfolio Manager of each fund, which he has managed since 2025. He also manages other funds. Since joining Fidelity Investments in 2003, Mr. Eswara has worked as a trader and portfolio manager.

SYI-PSTK-1025-102 1.9918165.102 October 1, 2025

**Supplement to the Fidelity® SAI Intermediate Treasury Bond Index Fund and Fidelity® SAI Short-Term Treasury Bond Index Fund April 29, 2025 Prospectus**

The following information supplements information for Fidelity® SAI Intermediate Treasury Bond Index Fund found in the "Fund Summary" section under the "Portfolio Manager(s)" heading.

Van Eswara (Co-Portfolio Manager) has managed the fund since 2025.

The following information supplements information for Fidelity® SAI Short-Term Treasury Bond Index Fund found in the "Fund Summary" section under the "Portfolio Manager(s)" heading.

Van Eswara (Co-Portfolio Manager) has managed the fund since 2025.

The following information supplements the biographical information found in the "Fund Management" section under the "Portfolio Manager(s)" heading.

Van Eswara is Co-Portfolio Manager of each fund, which he has managed since 2025. He also manages other funds. Since joining Fidelity Investments in 2003, Mr. Eswara has worked as a trader and portfolio manager.

IST-PSTK-1025-102 1.9918160.102 October 1, 2025

**Supplement to the Fidelity® Inflation-Protected Bond Index Fund March 1, 2025 Prospectus**

The following information supplements information found in the "Fund Summary" section under the "Portfolio Manager(s)" heading.

Van Eswara (Co-Portfolio Manager) has managed the fund since 2025.

The following information supplements the biographical information found in the "Fund Management" section under the "Portfolio Manager(s)" heading.

Van Eswara is Co-Portfolio Manager of Fidelity® Inflation-Protected Bond Index Fund, which he has managed since 2025. He also manages other funds. Since joining Fidelity Investments in 2003, Mr. Eswara has worked as a trader and portfolio manager.

PIB-I-PIB-AI-PSTK-1025-110 1.9858875.110 October 1, 2025

**Supplement to the Fidelity® SAI Inflation-Protected Bond Index Fund March 1, 2025 Prospectus**

The following information supplements information found in the "Fund Summary" section under the "Portfolio Manager(s)" heading.

Van Eswara (Co-Portfolio Manager) has managed the fund since 2025.

The following information supplements the biographical information found in the "Fund Management" section under the "Portfolio Manager(s)" heading.

Van Eswara is Co-Portfolio Manager of Fidelity® SAI Inflation-Protected Bond Index Fund, which he has managed since 2025. He also manages other funds. Since joining Fidelity Investments in 2003, Mr. Eswara has worked as a trader and portfolio manager.

SPB-PSTK-1025-102 1.9918159.102 October 1, 2025

**Supplement to the Fidelity® Series Long-Term Treasury Bond Index Fund April 29, 2025 Prospectus**

The following information supplements information found in the "Fund Summary" section under the "Portfolio Manager(s)" heading.

Van Eswara (Co-Portfolio Manager) has managed the fund since 2025.

The following information supplements the biographical information found in the "Fund Management" section under the "Portfolio Manager(s)" heading.

Van Eswara is Co-Portfolio Manager of Fidelity® Series Long-Term Treasury Bond Index Fund, which he has managed since 2025. He also manages other funds. Since joining Fidelity Investments in 2003, Mr. Eswara has worked as a trader and portfolio manager.

XS8-PSTK-1025-104 1.9883877.104 October 1, 2025