# EDGAR Filing Document

**Accession Number:** 0001048702
**File Stem:** 0001680359-25-000557
**Filing Date:** 2025-7
**Character Count:** 7138
**Document Hash:** dc1b40a76ee0d4aa16583a73842de002
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001680359-25-000557.hdr.sgml**: 20250702

**ACCESSION NUMBER**: 0001680359-25-000557

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 3

**FILED AS OF DATE**: 20250702

**DATE AS OF CHANGE**: 20250702

**EFFECTIVENESS DATE**: 20250702

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** NATIONWIDE MUTUAL FUNDS
- **CENTRAL INDEX KEY:** 0001048702

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1031

**FILING VALUES:**
- **FORM TYPE:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-40455
- **FILM NUMBER:** 251099129

**BUSINESS ADDRESS:**
- **STREET 1:** ONE NATIONWIDE PLAZA
- **STREET 2:** MAIL CODE 05-02-210
- **CITY:** COLUMBUS
- **STATE:** OH
- **ZIP:** 43215
- **BUSINESS PHONE:** 614-435-5749

**MAIL ADDRESS:**
- **STREET 1:** ONE NATIONWIDE PLAZA
- **STREET 2:** MAIL CODE 05-02-210
- **CITY:** COLUMBUS
- **STATE:** OH
- **ZIP:** 43215

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** GARTMORE MUTUAL FUNDS
- **DATE OF NAME CHANGE:** 20020125

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** NATIONWIDE MUTUAL FUNDS
- **DATE OF NAME CHANGE:** 19991015

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** NATIONWIDE INVESTING FOUNDATION III
- **DATE OF NAME CHANGE:** 19971029

## Series and Classes Contracts Data

### Nationwide International Index Fund (Series ID: S000004997)

---

|  |  |  |
|:---|:---|:---|
| Class Name                  | Ticker Symbol | Class ID   |
| Class A                     | GIIAX         | C000013557 |
| Class R6                    | GIXIX         | C000013560 |
| Class R                     | GIIRX         | C000033116 |
| Institutional Service Class | NWXPX         | C000175978 |

---

### Nationwide Mid Cap Market Index Fund (Series ID: S000004998)

---

|  |  |  |
|:---|:---|:---|
| Class Name                  | Ticker Symbol | Class ID   |
| Class A                     | GMXAX         | C000013561 |
| Class R6                    | GMXIX         | C000013564 |
| Class R                     | GMXRX         | C000033117 |
| Institutional Service Class | NWXQX         | C000175979 |

---

### Nationwide S&P 500 Index Fund (Series ID: S000004999)

---

|  |  |  |
|:---|:---|:---|
| Class Name                  | Ticker Symbol | Class ID   |
| Class A                     | GRMAX         | C000013565 |
| Class R6                    | GRMIX         | C000013568 |
| Service Class               | GRMSX         | C000013569 |
| Institutional Service Class | GRISX         | C000013570 |
| Class R                     | GRMRX         | C000033118 |

---

### Nationwide Small Cap Index Fund (Series ID: S000005000)

---

|  |  |  |
|:---|:---|:---|
| Class Name                  | Ticker Symbol | Class ID   |
| Class A                     | GMRAX         | C000013572 |
| Class R6                    | GMRIX         | C000013575 |
| Class R                     | GMSRX         | C000033119 |
| Institutional Service Class | NWXRX         | C000175980 |

---

## Series and Classes Contracts Data

### Nationwide International Index Fund (Series ID: S000004997)

| Class ID   | Class Name                  | Ticker Symbol   |
|:---|:---|:---|
| C000013557 | Class A                     | GIIAX           |
| C000013560 | Class R6                    | GIXIX           |
| C000033116 | Class R                     | GIIRX           |
| C000175978 | Institutional Service Class | NWXPX           |

### Nationwide Mid Cap Market Index Fund (Series ID: S000004998)

| Class ID   | Class Name                  | Ticker Symbol   |
|:---|:---|:---|
| C000013561 | Class A                     | GMXAX           |
| C000013564 | Class R6                    | GMXIX           |
| C000033117 | Class R                     | GMXRX           |
| C000175979 | Institutional Service Class | NWXQX           |

### Nationwide S&P 500 Index Fund (Series ID: S000004999)

| Class ID   | Class Name                  | Ticker Symbol   |
|:---|:---|:---|
| C000013565 | Class A                     | GRMAX           |
| C000013568 | Class R6                    | GRMIX           |
| C000013569 | Service Class               | GRMSX           |
| C000013570 | Institutional Service Class | GRISX           |
| C000033118 | Class R                     | GRMRX           |

### Nationwide Small Cap Index Fund (Series ID: S000005000)

| Class ID   | Class Name                  | Ticker Symbol   |
|:---|:---|:---|
| C000013572 | Class A                     | GMRAX           |
| C000013575 | Class R6                    | GMRIX           |
| C000033119 | Class R                     | GMSRX           |
| C000175980 | Institutional Service Class | NWXRX           |

---

| |
|:---|
| **NATIONWIDE MUTUAL FUNDS** |
| Nationwide Bond Index Fund |
| Nationwide International Index Fund |
| Nationwide Mid Cap Market Index Fund |
| Nationwide NYSE Arca Tech 100 Index Fund |
| Nationwide S&P 500 Index Fund |
| Nationwide Small Cap Index Fund |

---

#### Supplement dated July 2, 2025

#### to the Prospectus dated February 28, 2025

*Capitalized terms and certain other terms used in this supplement, unless otherwise defined in this supplement, have the meanings assigned to them in the Prospectus.*

#### Nationwide International Index Fund, Nationwide Mid Cap Market Index Fund, Nationwide S&P 500 Index Fund and Nationwide Small Cap Index Fund (collectively, the "Funds")

Effective immediately, the Prospectus is amended as follows:

<br> 1. The tables under the sections entitled "Portfolio Managers" on pages 9, 13, 21 and 24 of the Prospectus are each deleted in their entirety and replaced with the following:

---

| | | |
|:---|:---|:---|
| **Portfolio Manager**  | **Title**  | **Length of Service**  |
| Jennifer Hsui, CFA | Managing Director, Portfolio Manager | Since 2019 |
| Peter Sietsema | Director, Senior Portfolio Manager | Since 2023 |
| Matt Waldron, CFA | Managing Director | Since 2025 |
| Steven White | Director | Since 2025 |

---

<br> 2. The information relating to the Funds under the heading "Portfolio Management" on page 40 of the Prospectus is deleted in its entirety and replaced with the following:

Each Fund is managed by a team comprising Jennifer Hsui, CFA, Peter Sietsema, Matt Waldron, CFA and Steven White. This team is responsible for the day-to-day management of the Funds and the selection of the Funds' investments.

Ms. Hsui is a Managing Director and Chief Investment Officer for Global Portfolio Management within BlackRock's ETF and Index Equity team. Her service with the firm dates back to 2006.

Mr. Sietsema is a Director, Senior Portfolio Manager and a member of BlackRock's ETF and index investments team. His service with the firm dates back to 2007.

Mr. Waldron is a Managing Director and U.S. Head of International Portfolio Management. His service with the firm dates back to 2011.

Mr. White is a Director and Head of the Active Risk Index ETF team and co-CIO for Index Equity Investments. His service with the firm dates back to 2011.

#### PLEASE RETAIN THIS SUPPLEMENT FOR FUTURE REFERENCE