# EDGAR Filing Document

**Accession Number:** 0000076721
**File Stem:** 0001398344-26-006692
**Filing Date:** 2026-4
**Character Count:** 2232
**Document Hash:** 16732c7cb57b77517b1f2695f3394f4e
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001398344-26-006692.hdr.sgml**: 20260420

**ACCESSION NUMBER**: 0001398344-26-006692

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260420

**DATE AS OF CHANGE**: 20260420

**EFFECTIVENESS DATE**: 20260420

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** IMPAX FUNDS SERIES TRUST I
- **CENTRAL INDEX KEY:** 0000076721

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** MA
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 002-38679
- **FILM NUMBER:** 26873609

**BUSINESS ADDRESS:**
- **STREET 1:** 30 PENHALLOW STREET, SUITE 400
- **CITY:** PORTSMOUTH
- **STATE:** NH
- **ZIP:** 03801-3852
- **BUSINESS PHONE:** 800-767-1729

**MAIL ADDRESS:**
- **STREET 1:** 30 PENHALLOW STREET, SUITE 400
- **CITY:** PORTSMOUTH
- **STATE:** NH
- **ZIP:** 03801-3852

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** PAX WORLD FUNDS SERIES TRUST I
- **DATE OF NAME CHANGE:** 20070831

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** PAX WORLD BALANCED FUND
- **DATE OF NAME CHANGE:** 20061113

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** PAX WORLD BALANCED FUND INC
- **DATE OF NAME CHANGE:** 20040624

## Series and Classes Contracts Data

### Impax Global Infrastructure ETF (Series ID: S000098391)

---

|  |  |
|:---|:---|
| Class Name                      | Class ID   |
| Impax Global Infrastructure ETF | C000268069 |

---

## Series and Classes Contracts Data

### Impax Global Infrastructure ETF (Series ID: S000098391)

| Class ID   | Class Name                      | Ticker Symbol   |
|:---|:---|:---|
| C000268069 | Impax Global Infrastructure ETF |  |

**Impax Funds Series Trust I**

**Impax Global Infrastructure ETF**

Supplement Dated April 20, 2026

to the Prospectus and Statement of Additional Information dated January 6, 2026

Effective May 1, 2026, the name of Impax Global Infrastructure ETF will change to Impax Global Sustainable Infrastructure ETF. Accordingly, each reference in the Prospectus and Statement of Additional Information to Impax Global Infrastructure ETF is hereby replaced with Impax Global Sustainable Infrastructure ETF.