# EDGAR Filing Document

**Accession Number:** 0001028621
**File Stem:** 0001829126-26-002406
**Filing Date:** 2026-3
**Character Count:** 4453
**Document Hash:** dd943f2de81c0af0398c56577caed291
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001829126-26-002406.hdr.sgml**: 20260317

**ACCESSION NUMBER**: 0001829126-26-002406

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260317

**DATE AS OF CHANGE**: 20260317

**EFFECTIVENESS DATE**: 20260317

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** TCW Metropolitan West Funds
- **CENTRAL INDEX KEY:** 0001028621

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 0331

**FILING VALUES:**
- **FORM TYPE:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-18737
- **FILM NUMBER:** 26763060

**BUSINESS ADDRESS:**
- **STREET 1:** 515 SOUTH FLOWER ST
- **CITY:** LOS ANGELES
- **STATE:** CA
- **ZIP:** 90071
- **BUSINESS PHONE:** 213-244-0000

**MAIL ADDRESS:**
- **STREET 1:** 515 SOUTH FLOWER ST
- **CITY:** LOS ANGELES
- **STATE:** CA
- **ZIP:** 90071

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** METROPOLITAN WEST FUNDS
- **DATE OF NAME CHANGE:** 19961209

## Series and Classes Contracts Data

### TCW METWEST Sustainable Securitized Fund (Series ID: S000072616)

---

|  |  |  |
|:---|:---|:---|
| Class Name | Ticker Symbol | Class ID   |
| Class M    | MWERX         | C000228996 |
| Class I    | MWESX         | C000228997 |

---

## Series and Classes Contracts Data

### TCW METWEST Sustainable Securitized Fund (Series ID: S000072616)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000228996 | Class M      | MWERX           |
| C000228997 | Class I      | MWESX           |

**TCW METROPOLITAN WEST FUNDS**

**TCW MetWest Sustainable Securitized Fund (the "Fund")**

(I Share: MWESX; M Share: MWERX)

**Supplement dated March 17, 2026 to the Prospectus and**

**the Summary Prospectus, each dated July 29, 2025, as supplemented**

This supplement provides new and additional information beyond that contained in the Prospectus and the Summary Prospectus and any previous supplements. It should be retained and read in conjunction with the Prospectus and the Summary Prospectus and any previous supplements.

On March 16, 2026, the Board of Trustees of the Fund, having determined that a reorganization of the Fund would be in the best interest of the Fund and its shareholders, voted to approve a form of Agreement and Plan of Reorganization to reorganize the Fund with and into TCW Securitized Income ETF, a newly-created exchange-traded fund ("ETF") (the "Acquiring Fund"), which will be a series of TCW ETF Trust (the "Reorganization").

Pursuant to applicable law (including the Investment Company Act of 1940) the Reorganization may be implemented without shareholder approval. The Reorganization is expected to occur in June 2026 and is expected to be a tax-free reorganization for U.S. federal income tax purposes. Additional information about the Reorganization will be made available to shareholders in a combined information statement/prospectus prior to the Reorganization date.

*The foregoing is not an offer to sell, nor a solicitation of an offer to buy, shares of the Acquiring Fund, nor is it a solicitation of any proxy. Because the Fund is expected to reorganize into the Acquiring Fund on its reorganization date, you should consider the appropriateness of making a new or subsequent investment in the Fund prior to its reorganization date. You should consider the investment objectives, risks, strategies, fees and expenses of the Acquiring Fund and/or the Fund carefully before investing.*

*Prior to the Reorganization date, a combined information statement/prospectus will be included in a registration statement on Form N-14 that will be filed with the U.S. Securities and Exchange Commission (the "SEC"). After the registration statement is filed with the SEC, it may be amended or withdrawn and the combined information statement/prospectus will not be distributed to shareholders unless and until the registration statement becomes effective. Investors are urged to read the materials and any other relevant documents when they become available because they will contain important information about the Reorganization. After the materials are filed, free copies of the materials will be available on the SEC's web site at www.sec.gov. These materials also will be available at https://www.tcw.com and a paper copy can be obtained at no charge by calling 1-877-829-4768.*

***Shareholders should retain this Supplement for future reference.***