# EDGAR Filing Document

**Accession Number:** 0000890453
**File Stem:** 0000894189-26-005516
**Filing Date:** 2026-2
**Character Count:** 3487
**Document Hash:** 27a3405f38e728d385270acdc3f4b4b6
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000894189-26-005516.hdr.sgml**: 20260226

**ACCESSION NUMBER**: 0000894189-26-005516

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 16

**FILED AS OF DATE**: 20260226

**DATE AS OF CHANGE**: 20260226

**EFFECTIVENESS DATE**: 20260226

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** WILSHIRE MUTUAL FUNDS INC
- **CENTRAL INDEX KEY:** 0000890453

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 033-50390
- **FILM NUMBER:** 26683046

**BUSINESS ADDRESS:**
- **STREET 1:** 1299 OCEAN AVENUE
- **STREET 2:** SUITE 700
- **CITY:** SANTA MONICA
- **STATE:** CA
- **ZIP:** 90401
- **BUSINESS PHONE:** 610-676-3419

**MAIL ADDRESS:**
- **STREET 1:** 1299 OCEAN AVENUE
- **STREET 2:** SUITE 700
- **CITY:** SANTA MONICA
- **STATE:** CA
- **ZIP:** 90401

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** WILSHIRE TARGET FUNDS INC
- **DATE OF NAME CHANGE:** 19960603

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** DREYFUS WILSHIRE TARGET FUNDS INC
- **DATE OF NAME CHANGE:** 19921014

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** DREYFUS WILSHIRE SERIES FUND INC/
- **DATE OF NAME CHANGE:** 19921014

## Series and Classes Contracts Data

### Wilshire 5000 Index Fund (Series ID: S000001049)

---

|  |  |  |
|:---|:---|:---|
| Class Name          | Ticker Symbol | Class ID   |
| INVESTMENT CLASS    | WFIVX         | C000002815 |
| INSTITUTIONAL CLASS | WINDX         | C000002816 |

---

## Series and Classes Contracts Data

### Wilshire 5000 Index Fund (Series ID: S000001049)

| Class ID   | Class Name          | Ticker Symbol   |
|:---|:---|:---|
| C000002815 | INVESTMENT CLASS    | WFIVX           |
| C000002816 | INSTITUTIONAL CLASS | WINDX           |

?xml version='1.0' encoding='ASCII'? ck0000890453-20260226

February 26, 2026

**IMPORTANT NOTICE TO SHAREHOLDERS** 

**WILSHIRE MUTUAL FUNDS, INC.**

**(the "Company")** 

**FT Wilshire 5000 Index**<sup>SM</sup> **Fund (the "Fund")**

**Investment Class Shares (WFIVX)&nbsp;&nbsp;&nbsp;&nbsp;**

**Institutional Class Shares (WINDX)**

**Supplement to the Summary Prospectus, Prospectus,** 

**and Statement of Additional Information ("SAI"),** 

**each dated April 30, 2025**

THIS SUPPLEMENT REPLACES AND SUPERCEDES ANY CONTRARY INFORMATION CONTAINED IN THE SUMMARY PROSPECTUS, PROSPECTUS, AND SAI OF THE FUND.

Effective February 27, 2026 (the "Effective Date"), the name of the Fund and the name of the Index will change as follows:

---

| | | |
|:---|:---|:---|
| | **Current** | **New (effective February 27, 2026)** |
| Fund Name | FT Wilshire 5000 Index<sup>SM</sup> Fund | Wilshire 5000 Index<sup>SM</sup> Fund |
| Index Name | FT Wilshire 5000 Index <sup>SM</sup> | Wilshire 5000 Index <sup>SM</sup> |

---

Accordingly, as of the Effective Date, all references to the Fund's name and Index in the Summary Prospectus, Prospectus, and SAI are deleted and replaced with "Wilshire 5000 Index<sup>SM</sup> Fund" and "Wilshire 5000 Index <sup>SM</sup>", respectively.

No action is required by current shareholders of the Fund as a result of this change. In addition, the change in the Fund's name will have no effect on its investment objective or strategy.

\*\*\*\*\*

If you have any questions regarding the Fund, or any series of the Company, please call (866) 591-1568.

***Investors Should Retain this Supplement for Future Reference.***