# EDGAR Filing Document

**Accession Number:** 0000810893
**File Stem:** 0001193125-26-226487
**Filing Date:** 2026-5
**Character Count:** 3750
**Document Hash:** a963b08738984c4cf4c0bc6c723a822e
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-226487.hdr.sgml**: 20260515

**ACCESSION NUMBER**: 0001193125-26-226487

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260515

**DATE AS OF CHANGE**: 20260515

**EFFECTIVENESS DATE**: 20260515

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** PIMCO FUNDS
- **CENTRAL INDEX KEY:** 0000810893

**ORGANIZATION NAME:**
- **EIN:** 952632339
- **STATE OF INCORPORATION:** MA
- **FISCAL YEAR END:** 0331

**FILING VALUES:**
- **FORM TYPE:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 033-12113
- **FILM NUMBER:** 26986357

**BUSINESS ADDRESS:**
- **STREET 1:** 650 NEWPORT CENTER DRIVE
- **CITY:** NEWPORT BEACH
- **STATE:** CA
- **ZIP:** 92660
- **BUSINESS PHONE:** 949-720-6000

**MAIL ADDRESS:**
- **STREET 1:** 650 NEWPORT CENTER DRIVE
- **CITY:** NEWPORT BEACH
- **STATE:** CA
- **ZIP:** 92660

## Series and Classes Contracts Data

### PIMCO California Municipal Opportunistic Value Fund (Series ID: S000064093)

---

|  |  |  |
|:---|:---|:---|
| Class Name          | Ticker Symbol | Class ID   |
| Institutional Class | GCMFX         | C000207236 |

---

### PIMCO National Municipal Opportunistic Value Fund (Series ID: S000064095)

---

|  |  |  |
|:---|:---|:---|
| Class Name          | Ticker Symbol | Class ID   |
| Institutional Class | GNMFX         | C000207238 |

---

## Series and Classes Contracts Data

### PIMCO California Municipal Opportunistic Value Fund (Series ID: S000064093)

| Class ID   | Class Name          | Ticker Symbol   |
|:---|:---|:---|
| C000207236 | Institutional Class | GCMFX           |

### PIMCO National Municipal Opportunistic Value Fund (Series ID: S000064095)

| Class ID   | Class Name          | Ticker Symbol   |
|:---|:---|:---|
| C000207238 | Institutional Class | GNMFX           |

**PIMCO Funds** 

**Supplement Dated May 15, 2026 to the Municipal Value Funds Prospectus (the "Prospectus") dated August 1, 2025, as supplemented from time to time** 

**Disclosure Related to PIMCO California Municipal Opportunistic Value Fund and PIMCO National Municipal Opportunistic Value Fund (each, a "Fund" and together, the "Funds")** 

*Effective August 1, 2026, PIMCO California Municipal Opportunistic Value Fund is re-named PIMCO California Municipal Opportunistic Advantage Fund. Therefore, effective August 1, 2026, all references to PIMCO California Municipal Opportunistic Value Fund in the Prospectus are replaced with PIMCO California Municipal Opportunistic Advantage Fund.* 

*Effective August 1, 2026, PIMCO National Municipal Opportunistic Value Fund is re-named PIMCO National Municipal Opportunistic Advantage Fund. Therefore, effective August 1, 2026, all references to PIMCO National Municipal Opportunistic Value Fund in the Prospectus are replaced with PIMCO California Municipal Opportunistic Advantage Fund.* 

*Effective August 1, 2026, the following is added as the first sentence under "Municipal Instruments" in the "Characteristics and Risks of Securities and Investment Techniques" section of the Prospectus:* 

Municipal Bonds are debt securities whose interest is, in the opinion of bond counsel for the issuer at the time of issuance, exempt from federal income tax.

*Effective August 1, 2026, the following is added as the last two sentences under "Municipal Instruments" in the "Characteristics and Risks of Securities and Investment Techniques" section of the Prospectus:* 

California Municipal Bonds are debt securities whose interest is, in the opinion of bond counsel for the issuer at the time of issuance, exempt from federal income tax and California income tax.

**<u>Investors Should Retain This Supplement for Future Reference</u>**

PIMCO_SUPP5_051526