# EDGAR Filing Document

**Accession Number:** 0000076721
**File Stem:** 0001398344-25-023113
**Filing Date:** 2025-12
**Character Count:** 4754
**Document Hash:** 8eab258c751b48d36b841c540d6e4c4a
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001398344-25-023113.hdr.sgml**: 20251230

**ACCESSION NUMBER**: 0001398344-25-023113

**CONFORMED SUBMISSION TYPE**: 8-A12B

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20251230

**DATE AS OF CHANGE**: 20251230

**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:** 8-A12B
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-43036
- **FILM NUMBER:** 251613814

**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

**UNITED STATES SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549**

**FORM 8-A**

**FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934**

**IMPAX FUNDS SERIES TRUST I**

(Exact name of registrant as specified in its charter)

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| | |
|:---|:---|
| **Commonwealth of Massachusetts** | **See below** |
| (State of incorporation or organization) | (I.R.S. Employer Identification No.) |
| **30 Penhallow Street, Suite 100**<br> **Portsmouth, New Hampshire**  | **03801** |
| (Address of Principal Executive Offices) | (Zip Code) |

---

**Securities to be registered pursuant to Section 12(b) of the Act:**

---

| | | |
|:---|:---|:---|
| Title of Each Class<br> to be so Registered | Name of the Exchange on which<br> Each Class is to be so Registered | I.R.S. Employer<br> Identification Number |
| **Shares of beneficial interest, no par value per share, of each of:** |  |  |
| **Impax Global Infrastructure ETF** | **NYSE Arca, Inc.** | **32-0507350** |

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If this form relates to the registration of a class of securities pursuant to Section 12(b) of the Exchange Act and is effective pursuant to General Instruction A.(c) or (e), check the following box. [X]

If this form relates to the registration of a class of securities pursuant to Section 12(g) of the Exchange Act and is effective pursuant to General Instruction A.(d) or (e), check the following box. [ ]

If this form relates to the registration of a class of securities concurrently with a Regulation A offering, check the following box. [ ]

**Securities Act registration statement file number to which this form relates: 002-38679**

**Securities to be registered pursuant to Section 12(g) of the Exchange Act: None.**

**INFORMATION REQUIRED IN REGISTRATION STATEMENT**

**Item 1. Description of Registrant's Securities to be Registered.**

A description of the shares of beneficial interest, no par value, of Impax Global Infrastructure ETF, a series of Impax Funds Series Trust I (the "Registrant"), is incorporated by reference to Post-Effective Amendment No. 109 to the Registrant's registration statement on Form N-1A (the "Registration Statement"), filed with the Securities and Exchange Commission on December 16, 2025 (File Nos. 002-38679; 811-02064). Any form of supplement to the Registration Statement that is subsequently filed is hereby also incorporated by reference herein.

**Item 2. Exhibits.**

&nbsp;&nbsp;&nbsp;&nbsp;1. [Amended and Restated Agreement and Declaration of Trust of Registrant dated October 3, 2025 is incorporated by reference to Post-Effective Amendment No. 108 to the Registrant's Registration Statement on Form N-1A.](https://www.sec.gov/Archives/edgar/data/76721/000139834425018818/fp0095539-1_ex9928a1.htm)

&nbsp;&nbsp;&nbsp;&nbsp;2. [Bylaws of Registrant are incorporated by reference to Post-Effective Amendment No. 49 to the Registrant's Registration Statement on Form N-1A.](https://www.sec.gov/Archives/edgar/data/76721/000110465907018830/a07-2763_1ex99db.htm)

**SIGNATURE**

Pursuant to the requirements of Section 12 of the Securities Exchange Act of 1934, the Registrant has duly caused this registration statement on Form 8-A to be signed on its behalf by the undersigned, thereto duly authorized, as of December 30, 2025.

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| | |
|:---|:---|
| Impax Funds Series Trust I | Impax Funds Series Trust I |
| By: | /s/ Edward Farrington |
| Name: | Edward Farrington |
| Title: | President |

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