# EDGAR Filing Document

**Accession Number:** 0000076721
**File Stem:** 0001398344-25-012370
**Filing Date:** 2025-6
**Character Count:** 11256
**Document Hash:** 76b8cec3c3497315fcf29b9ff41f1ba0
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001398344-25-012370.hdr.sgml**: 20250630

**ACCESSION NUMBER**: 0001398344-25-012370

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 15

**FILED AS OF DATE**: 20250630

**DATE AS OF CHANGE**: 20250630

**EFFECTIVENESS DATE**: 20250630

**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:** 251088896

**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 Small Cap Fund (Series ID: S000021459)

---

|  |  |  |
|:---|:---|:---|
| Class Name          | Ticker Symbol | Class ID   |
| Investor Class      | PXSCX         | C000061360 |
| Institutional Class | PXSIX         | C000061361 |
| Class A             | PXSAX         | C000128850 |

---

### Impax Global Sustainable Infrastructure Fund (Series ID: S000055846)

---

|  |  |  |
|:---|:---|:---|
| Class Name          | Ticker Symbol | Class ID   |
| Institutional Class | PXDIX         | C000175864 |
| Investor Class      | PAXDX         | C000175865 |

---

## Series and Classes Contracts Data

### Impax Small Cap Fund (Series ID: S000021459)

| Class ID   | Class Name          | Ticker Symbol   |
|:---|:---|:---|
| C000061360 | Investor Class      | PXSCX           |
| C000061361 | Institutional Class | PXSIX           |
| C000128850 | Class A             | PXSAX           |

### Impax Global Sustainable Infrastructure Fund (Series ID: S000055846)

| Class ID   | Class Name          | Ticker Symbol   |
|:---|:---|:---|
| C000175864 | Institutional Class | PXDIX           |
| C000175865 | Investor Class      | PAXDX           |

?xml version='1.0' encoding='ASCII'?

**Impax Funds Series Trust I**

Supplement Dated June 30, 2025

to the Prospectus and Statement of Additional information,

each dated May 1, 2025

Effective June 30, 2025, the Prospectus and Statement of Additional Information are amended, as follows:

**Prospectus**

**Page 23**

Under **Portfolio Managers**, the table of Portfolio Managers is deleted and replaced in its entirety with the following:

<u>Portfolio Manager</u> <u>Since</u> <u>Title</u> <br> Curtis Kim 2022 Portfolio Manager <br> Nathan Moser 2008 Portfolio Manager

**Page 39**

Under **Portfolio Managers**, the table of Portfolio Managers is deleted and replaced in its entirety with the following:

<u>Portfolio Manager</u> <u>Since</u> <u>Title</u> <br> Harry Boyle 2023 Portfolio Manager <br> Justin Winter 2023 Portfolio Manager

**Page 148**

The description of **Diederik Basch, CFA** under **Portfolio Managers** is deleted in its entirety.

The first sentence of the description for **Christine Cappabianca** is replaced with the following:

**Christine Cappabianca** is a Portfolio Manager of the Global Women's Fund, the US Sustainable Economy Fund and the International Sustainable Economy Fund.

**Statement of Additional Information**

**Pages 92**

The first table under **Portfolio Managers** will be replaced in its entirety with the following:

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| **Portfolio Manager** | **Number of Other Pooled Vehicles Managed** | **Other Pooled Vehicles AUM $(million)** | **Number of Other Accounts Managed** | **Other Accounts AUM $(million)** | **Number of Other Registered Investment Companies Managed** | **Assets of Other Registered Investment Companies AUM $(million)** |
| Harry Boyle | 0 | $0 | 0 | $0 | 0 | $0 |
| Christine Cappabianca | 0 | $0 | 0 | $0 | 0 | $0 |
| Joseph Cordi<sup>1</sup> | 0 | $0 | 0 | $0 | 0 | $0 |
| Amber Fairbanks | 0 | $0 | 0 | $0 | 0 | $0 |
| Curtis Kim | 2 | $16.50 | 0 | $0 | 0 | $0 |
| Scott LaBreche | 0 | $0 | 0 | $0 | 0 | $0 |
| Kirsteen Morrison | 0 | $0 | 0 | $0 | 0 | $0 |
| Nathan Moser | 2 | $16.50 | 0 | $0 | 0 | $0 |
| Ross Pamphilon<sup>2</sup> | 0 | $0 | 0 | $0 | 0 | $0 |
| Peter Schwab | 0 | $0 | 1 | $90.48 | 0 | $0 |
| Anthony Trzcinka | 0 | $0 | 1 | $90.48 | 0 | $0 |
| Justin Winter | 0 | $0 | 0 | $0 | 0 | $0 |

---

<sup>1</sup> Information for Mr. Cordi is provided as of March 3, 2025

<sup>2</sup> Information for Mr. Pamphilon is provided as of the date of this SAI

**Page 95**

The section entitled **Portfolio Managers – Ownership of Securities** is replaced in its entirety with the following:

Unless otherwise stated, as of December 31, 2024 (i) the dollar value of shares of the Large Cap Fund owned beneficially by Joseph Cordi was $10,001- $50,000<sup>1</sup>; and by Amber Fairbanks was $0; (ii) the dollar value of shares of the Small Cap Fund owned beneficially by Curtis Kim was $10,001-$50,000; and by Nathan Moser was $100,001- $500,000; (iii) the dollar value of shares of the US Sustainable Economy Fund owned beneficially by Christine Cappabianca was $10,001-$50,000; and by Scott LaBreche was $10,001-$50,000; (iv) the dollar value of shares of the Global Sustainable Infrastructure Fund owned beneficially by Harry Boyle was $0; and by Justin Winter was $0; (v) the dollar value of shares of the International Sustainable Economy owned beneficially by Christine Cappabianca was $10,001-$50,000; and by Scott LaBreche was $50,001-$100,000; (vi) the dollar value of shares of the Global Women's Fund owned beneficially by Christine Cappabianca was $10,001-$50,000; and by Scott LaBreche was $50,001-$100,000; (vii) the dollar value of shares of the Global Environmental Markets Fund owned beneficially by Hubert Aarts was $0; by Siddharth Jha was $10,001-$50,000; and by David Winborne was $0; (viii) the dollar value of shares of the Global Opportunities Fund owned beneficially by Kirsteen Morrison was $0; and by David Winborne was $0; (ix) the dollar value of shares of the Core Bond Fund owned beneficially by Anthony Trzcinka was $10,001-$50,000; and by Ross Pamphilon was $0<sup>2</sup>; (x) the dollar value of shares of the High Yield Bond Fund owned beneficially by Peter Schwab was $500,001- $1,000,000; (xi) the dollar value of shares of the Sustainable Allocation Fund owned beneficially by Nathan Moser was $100,001-$500,000; by Peter Schwab was $100,001-$500,000; by Anthony Trzcinka was $100,001-$500,000; and by Kirsteen Morrison was $0; (xii) the dollar value of shares of the Global Social Leaders Fund owned beneficially by Amber Fairbanks was $0; and by Charles French was $0.

<sup>1</sup> Information for Mr. Cordi is provided as of March 14, 2025.

<sup>2</sup> Information for Mr. Pamphilon is provided as of the date of this SAI.

**Page 148**

The description of **Diederik Basch, CFA** under **Portfolio Managers** is deleted in its entirety.

The first sentence of the description for **Christine Cappabianca** is replaced with the following:

**Christine Cappabianca** is a Portfolio Manager of the Global Women's Fund, the US Sustainable Economy Fund and the International Sustainable Economy Fund.

**Statement of Additional Information**

**Pages 92**

The first table under **Portfolio Managers** will be replaced in its entirety with the following:

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| **Portfolio Manager** | **Number of Other Pooled Vehicles Managed** | **Other Pooled Vehicles AUM $(million)** | **Number of Other Accounts Managed** | **Other Accounts AUM $(million)** | **Number of Other Registered Investment Companies Managed** | **Assets of Other Registered Investment Companies AUM $(million)** |
| Harry Boyle | 0 | $0 | 0 | $0 | 0 | $0 |
| Christine Cappabianca | 0 | $0 | 0 | $0 | 0 | $0 |
| Joseph Cordi<sup>1</sup> | 0 | $0 | 0 | $0 | 0 | $0 |
| Amber Fairbanks | 0 | $0 | 0 | $0 | 0 | $0 |
| Curtis Kim | 2 | $16.50 | 0 | $0 | 0 | $0 |
| Scott LaBreche | 0 | $0 | 0 | $0 | 0 | $0 |
| Kirsteen Morrison | 0 | $0 | 0 | $0 | 0 | $0 |
| Nathan Moser | 2 | $16.50 | 0 | $0 | 0 | $0 |
| Ross Pamphilon<sup>2</sup> | 0 | $0 | 0 | $0 | 0 | $0 |
| Peter Schwab | 0 | $0 | 1 | $90.48 | 0 | $0 |
| Anthony Trzcinka | 0 | $0 | 1 | $90.48 | 0 | $0 |
| Justin Winter | 0 | $0 | 0 | $0 | 0 | $0 |

---

<sup>1</sup> Information for Mr. Cordi is provided as of March 3, 2025

<sup>2</sup> Information for Mr. Pamphilon is provided as of the date of this SAI

**Page 95**

The section entitled **Portfolio Managers – Ownership of Securities** is replaced in its entirety with the following:

Unless otherwise stated, as of December 31, 2024 (i) the dollar value of shares of the Large Cap Fund owned beneficially by Joseph Cordi was $10,001- $50,000<sup>1</sup>; and by Amber Fairbanks was $0; (ii) the dollar value of shares of the Small Cap Fund owned beneficially by Curtis Kim was $10,001-$50,000; and by Nathan Moser was $100,001- $500,000; (iii) the dollar value of shares of the US Sustainable Economy Fund owned beneficially by Christine Cappabianca was $10,001-$50,000; and by Scott LaBreche was $10,001-$50,000; (iv) the dollar value of shares of the Global Sustainable Infrastructure Fund owned beneficially by Harry Boyle was $0; and by Justin Winter was $0; (v) the dollar value of shares of the International Sustainable Economy owned beneficially by Christine Cappabianca was $10,001-$50,000; and by Scott LaBreche was $50,001-$100,000; (vi) the dollar value of shares of the Global Women's Fund owned beneficially by Christine Cappabianca was $10,001-$50,000; and by Scott LaBreche was $50,001-$100,000; (vii) the dollar value of shares of the Global Environmental Markets Fund owned beneficially by Hubert Aarts was $0; by Siddharth Jha was $10,001-$50,000; and by David Winborne was $0; (viii) the dollar value of shares of the Global Opportunities Fund owned beneficially by Kirsteen Morrison was $0; and by David Winborne was $0; (ix) the dollar value of shares of the Core Bond Fund owned beneficially by Anthony Trzcinka was $10,001-$50,000; and by Ross Pamphilon was $0<sup>2</sup>; (x) the dollar value of shares of the High Yield Bond Fund owned beneficially by Peter Schwab was $500,001- $1,000,000; (xi) the dollar value of shares of the Sustainable Allocation Fund owned beneficially by Nathan Moser was $100,001-$500,000; by Peter Schwab was $100,001-$500,000; by Anthony Trzcinka was $100,001-$500,000; and by Kirsteen Morrison was $0; (xii) the dollar value of shares of the Global Social Leaders Fund owned beneficially by Amber Fairbanks was $0; and by Charles French was $0.

<sup>1</sup> Information for Mr. Cordi is provided as of March 14, 2025.

<sup>2</sup> Information for Mr. Pamphilon is provided as of the date of this SAI.