# EDGAR Filing Document

**Accession Number:** 0000810893
**File Stem:** 0001193125-23-032584
**Filing Date:** 2023-2
**Character Count:** 4144
**Document Hash:** 657959ae5c288f7adcf192e099fe9358
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-23-032584.hdr.sgml**: 20230210

**ACCESSION NUMBER**: 0001193125-23-032584

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 13

**FILED AS OF DATE**: 20230210

**DATE AS OF CHANGE**: 20230210

**EFFECTIVENESS DATE**: 20230210

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** PIMCO FUNDS
- **CENTRAL INDEX KEY:** 0000810893
- **IRS NUMBER:** 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:** 23611977

**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 Short Duration Municipal Income Fund (Series ID: S000009702)

---

|  |  |  |
|:---|:---|:---|
| Class Name    | Ticker Symbol | Class ID   |
| Institutional | PSDIX         | C000026618 |
| A             | PSDAX         | C000026620 |
| C             | PSDCX         | C000026621 |
| I-2           | PSDPX         | C000064150 |
| I-3           | PSDUX         | C000203305 |
| Class C-2     | PCCMX         | C000222834 |

---

### PIMCO California Short Duration Municipal Income Fund (Series ID: S000013234)

---

|  |  |  |
|:---|:---|:---|
| Class Name    | Ticker Symbol | Class ID   |
| Institutional | PCDIX         | C000035571 |
| Class A       | PCDAX         | C000035573 |
| I-2           | PCDPX         | C000064166 |

---

## Series and Classes Contracts Data

### PIMCO Short Duration Municipal Income Fund (Series ID: S000009702)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000026618 | Institutional | PSDIX           |
| C000026620 | A             | PSDAX           |
| C000026621 | C             | PSDCX           |
| C000064150 | I-2           | PSDPX           |
| C000203305 | I-3           | PSDUX           |
| C000222834 | Class C-2     | PCCMX           |

### PIMCO California Short Duration Municipal Income Fund (Series ID: S000013234)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000035571 | Institutional | PCDIX           |
| C000035573 | Class A       | PCDAX           |
| C000064166 | I-2           | PCDPX           |

?xml version="1.0" encoding="utf-8" ? 497

------

#### PIMCO FUNDS

#### Important Notice Regarding Change in Investment Policy
**Supplement dated February 10, 2023 to the Tax-Efficient Strategy Funds Prospectus dated August 1, 2022, as supplemented from time to time; and to the Statement of Additional Information dated August 1, 2022 as supplemented from time to time (the "SAI")** 

**Disclosure Related to the PIMCO California Short Duration Municipal Income Fund and PIMCO Short Duration Municipal Income Fund (each, a "Fund" and together, the "Funds")** 

On February 7, 2023, the Board approved changes to the Funds' investment guidelines to permit each Fund to invest up to 20% of its assets in municipal securities subject to the federal alternative minimum tax. Accordingly, effective April 11, 2023, each Fund's Prospectus and SAI is revised as shown below.

#### Prospectus
*The first sentence of the second paragraph of the "Principal Investment Strategies" section of each Fund's Prospectus is deleted and replaced with the following:* 

The Fund may invest up to 20% of its assets in "private activity" bonds whose interest is a tax-preference item for purposes of the federal alternative minimum tax ("AMT"). For shareholders subject to the AMT, distributions derived from "private activity" bonds must be included in their AMT calculations, and as such a portion of the Fund's distribution may be subject to federal income tax.

#### SAI
*The last sentence of the sixth paragraph of the "Investment Objectives and Policies – Municipal Bonds" section of the Funds' SAI is deleted in its entirety.* 

#### Investors Should Retain This Supplement for Future Reference
PIMCO_SUPP1_021023