# EDGAR Filing Document

**Accession Number:** 0001048702
**File Stem:** 0001680359-25-000565
**Filing Date:** 2025-7
**Character Count:** 2740
**Document Hash:** bbc0b648e17396617c53b58093f6e061
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001680359-25-000565.hdr.sgml**: 20250702

**ACCESSION NUMBER**: 0001680359-25-000565

**CONFORMED SUBMISSION TYPE**: 497K

**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:** 497K
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-40455
- **FILM NUMBER:** 251099181

**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 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 MUTUAL FUNDS** |
| Nationwide S&P 500 Index Fund |

---

#### Supplement dated July 2, 2025

#### to the Summary 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 Summary Prospectus.*

Effective immediately, the table under the section entitled "Portfolio Managers" on page 3 of the Summary Prospectus is deleted in its 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 |

---

#### PLEASE RETAIN THIS SUPPLEMENT FOR FUTURE REFERENCE