# EDGAR Filing Document

**Accession Number:** 0000898745
**File Stem:** 0000898745-26-000761
**Filing Date:** 2026-6
**Character Count:** 3835
**Document Hash:** 7430edf6ed4cc4922e7030cc1f841c56
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000898745-26-000761.hdr.sgml**: 20260626

**ACCESSION NUMBER**: 0000898745-26-000761

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260626

**DATE AS OF CHANGE**: 20260626

**EFFECTIVENESS DATE**: 20260626

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** PRINCIPAL FUNDS, INC.
- **CENTRAL INDEX KEY:** 0000898745

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** MD
- **FISCAL YEAR END:** 1031

**FILING VALUES:**
- **FORM TYPE:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 033-59474
- **FILM NUMBER:** 261125144

**BUSINESS ADDRESS:**
- **STREET 1:** 711 HIGH STREET
- **CITY:** DES MOINES
- **STATE:** IA
- **ZIP:** 50392
- **BUSINESS PHONE:** 515-235-9328

**MAIL ADDRESS:**
- **STREET 1:** PRINCIPAL FINANCIAL GROUP
- **CITY:** DES MOINES
- **STATE:** IA
- **ZIP:** 50392

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** PRINCIPAL FUNDS, INC
- **DATE OF NAME CHANGE:** 20211220

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** PRINCIPAL FUNDS INC
- **DATE OF NAME CHANGE:** 20080616

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** PRINCIPAL INVESTORS FUND INC
- **DATE OF NAME CHANGE:** 20001012

## Series and Classes Contracts Data

### Diversified Income Fund (f/k/a Global Diversified Income Fund) (Series ID: S000024296)

---

|  |  |  |
|:---|:---|:---|
| Class Name          | Ticker Symbol | Class ID   |
| Institutional Class | PGDIX         | C000071805 |
| Class A             | PGBAX         | C000071807 |
| Class C             | PGDCX         | C000071808 |
| R-6                 | PGBLX         | C000190075 |

---

## Series and Classes Contracts Data

### Diversified Income Fund (f/k/a Global Diversified Income Fund) (Series ID: S000024296)

| Class ID   | Class Name          | Ticker Symbol   |
|:---|:---|:---|
| C000071805 | Institutional Class | PGDIX           |
| C000071807 | Class A             | PGBAX           |
| C000071808 | Class C             | PGDCX           |
| C000190075 | R-6                 | PGBLX           |

**Principal Funds, Inc.**

**Diversified Income Fund**

Supplement dated June 26, 2026

to the Prospectus and Statement of Additional Information

both dated March 1, 2026 (as previously supplemented)

and Summary Prospectus dated March 1, 2026, as amended April 14, 2026

This supplement updates information contained in the Prospectus, Statement of Additional Information, and Summary Prospectus for the Diversified Income Fund. Please retain this supplement for future reference.

**NOTICE:** On June 9, 2026, the Board of Directors of Principal Funds, Inc. approved certain changes to the Diversified Income Fund (the "Fund"), including the following: (i) removal of each sub-advisor to the Fund, (ii) replacement of the Principal Global Investors, LLC ("PGI") portfolio management team with a new PGI portfolio management team, (iii) change in the Fund's name from the Diversified Income Fund to the Multi-Sector Income Fund, and (iv) changes to the Fund's principal strategies and principal risks, including, among other things, removal of the Fund's passively managed (index) strategy and related risk, removal of the Fund's asset allocation strategy and related risk, and addition of strategies and risks related to sovereign debt, U.S. government securities, and high portfolio turnover. The Fund's investment objective remains unchanged.

On June 26, 2026, a preliminary registration statement was filed with the U.S. Securities and Exchange Commission (the "SEC") for SEC Staff review reflecting the above changes. Pending SEC Staff review and comment and other contingencies, the Fund expects the changes to be effective on or about August 25, 2026. This supplement is intended to provide advance notice to shareholders of such changes.

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