# EDGAR Filing Document

**Accession Number:** 0000076721
**File Stem:** 0002071691-25-005487
**Filing Date:** 2025-11
**Character Count:** 8036
**Document Hash:** c93fe6af13c106389a8a30c61345e071
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0002071691-25-005487.hdr.sgml**: 20251121

**ACCESSION NUMBER**: 0002071691-25-005487

**CONFORMED SUBMISSION TYPE**: NPORT-P

**PUBLIC DOCUMENT COUNT**: 2

**CONFORMED PERIOD OF REPORT**: 20250930

**FILED AS OF DATE**: 20251121

**DATE AS OF CHANGE**: 20251121

**PERIOD START**: 20251231

**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:** NPORT-P
- **SEC ACT:** 1940 Act
- **SEC FILE NUMBER:** 811-02064
- **FILM NUMBER:** 251507413

**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 Sustainable Allocation Fund (Series ID: S000011971)

| Class ID   | Class Name          | Ticker Symbol   |
|:---|:---|:---|
| C000043250 | Investor Class      | PAXWX           |
| C000043251 | Institutional Class | PAXIX           |

## Form NPORT-P: Monthly Portfolio Investments Report

### NPORT-P: Part A: General Information

**Item A.1. Information about the Registrant.**

- **a. Name of Registrant:** IMPAX FUNDS SERIES TRUST I

- **b. Investment Company Act file number:** 811-02064

- **c. CIK number of Registrant:** 0000076721

- **d. LEI of Registrant:** 549300TD5R23SWU72456

- **e. Address and telephone number of Registrant.**

  - **Street Address 1:** 30 Penhallow St., Suite 100

  - **City:** Portsmouth

  - **State:** NH

  - **Foreign country:** US

  - **Zip / Postal Code:** 03801

  - **Telephone number:** 603-431-8022

**Item A.2. Information about the Series.**

- **a. Name of Series:** Impax Sustainable Allocation Fund

- **b. EDGAR series identifier (if any):** S000011971

- **c. LEI of Series:** 5493005QNFIONEGYS209

**Item A.3. Reporting period.**

- **a. Date of fiscal year-end:** 2025-12-31

- **b. Date as of which information is reported:** 2025-09-30

**Item A.4. Final filing**

Does the Fund anticipate that this will be its final filing on Form N-PORT? **No**

### Fund Information

**Total Assets:** $2369699740.96

**Total Liabilities:** $373070.35

**Net Assets:** $2369326670.61

**Monthly Return Information**

| Class               | Month 1 Return (%)   | Month 2 Return (%)   | Month 3 Return (%)   |
|:---|:---|:---|:---|
| Class ID C000043251 | 1.50%                | 1.30%                | 1.89%                |
| Class ID C000043250 | 1.47%                | 1.26%                | 1.90%                |

**Monthly Gains & Losses**

| Period   | Net Realized Gain/Loss   | Net Unrealized Appreciation/Depreciation   |
|:---|:---|:---|
| Month 1  | $4103495.66              | $27567343.21                               |
| Month 2  | $0.00                    | $26784930.35                               |
| Month 3  | $0.00                    | $41117471.04                               |

### Schedule of Portfolio Investments

| Name                                          | Title                                                              | Identifiers                                   | Payoff Profile   | Asset Category   | Issuer Category   | Country   |   Balance | Units   | Value (USD)   | % of Net Assets   | Maturity Date   | Coupon Type   | Annualized Rate (%)   | Restricted?   |   Fair Value Level | Lending Status   |
|:---|:---|:---|:---|:---|:---|:---|---:|:---|:---|:---|:---|:---|:---|:---|---:|:---|
| Impax Small Cap Fund                          | Impax Small Cap Fund, Class Institutional                          | CUSIP: 704223817<br>LEI: 549300GOOKRMB3XGNR17 | Long             |  | RF                | US        |   6041090 | NS      | $115988926.81 | 4.90%             |  |  |  | No            |                  1 | On Loan: No      |
| Impax International Sustainable Economy Fund  | Impax International Sustainable Economy Fund, Class Institutional  | CUSIP: 704223742<br>LEI: 5493001G1B6NH621FW86 | Long             |  | RF                | US        |   9166843 | NS      | $113118839.02 | 4.77%             |  |  |  | No            |                  1 | On Loan: No      |
| Impax Core Bond Fund                          | Impax Core Bond Fund, Class Institutional                          | CUSIP: 704223460<br>LEI: 549300Z901FIZVY05W78 | Long             |  | RF                | US        |  82579841 | NS      | $736612183.73 | 31.09%            |  |  |  | No            |                  1 | On Loan: No      |
| Impax Global Sustainable Infrastructure Fund  | Impax Global Sustainable Infrastructure Fund, Class Institutional  | CUSIP: 704223445<br>LEI: 549300M7V6OFRLWL5549 | Long             |  | RF                | US        |   6330522 | NS      | $65647514.46  | 2.77%             |  |  |  | No            |                  1 | On Loan: No      |
| JPMorgan Prime Money Market Fund              | JPMorgan Prime Money Market Fund                                   | CUSIP: N/A<br>LEI: N/A                        | Long             | STIV             | RF                | US        |  40102660 | NS      | $40102659.64  | 1.69%             |  |  |  | No            |                  1 | On Loan: No      |
| Impax Global Opportunities Fund               | Impax Global Opportunities Fund, Class Institutional               | CUSIP: 704223429<br>LEI: 5493008PKSO3C54ZXR37 | Long             |  | RF                | US        |   4004029 | NS      | $72192649.67  | 3.05%             |  |  |  | No            |                  1 | On Loan: No      |
| Impax High Yield Bond Fund                    | Impax High Yield Bond Fund, Class Institutional                    | CUSIP: 704223809<br>LEI: 549300XS1BN61UNERX35 | Long             |  | RF                | US        |  18981386 | NS      | $117115152.33 | 4.94%             |  |  |  | No            |                  1 | On Loan: No      |
| Impax Global Environmental Markets Fund       | Impax Global Environmental Markets Fund, Class Institutional       | CUSIP: 704223775<br>LEI: 5493004WSDJ280SE8M13 | Long             |  | RF                | US        |   2684191 | NS      | $70298954.90  | 2.97%             |  |  |  | No            |                  1 | On Loan: No      |
| Impax Ellevate Global Women's Leadership Fund | Impax Ellevate Global Women's Leadership Fund, Class Institutional | CUSIP: 70422T109<br>LEI: 549300J0TL6WZJ1A7C04 | Long             |  | RF                | US        |   1907732 | NS      | $69346064.31  | 2.93%             |  |  |  | No            |                  1 | On Loan: No      |
| Impax US Sustainable Economy Fund             | Impax US Sustainable Economy Fund, Class Institutional             | CUSIP: 704223502<br>LEI: 5493001FQOFD3O7VGQ38 | Long             |  | RF                | US        |   6403916 | NS      | $174314585.51 | 7.36%             |  |  |  | No            |                  1 | On Loan: No      |
| Impax Large Cap Fund                          | Impax Large Cap Fund, Class Institutional                          | CUSIP: 704223486<br>LEI: 549300NZ5W3SP8MQMW39 | Long             |  | RF                | US        |  54975471 | NS      | $792746296.36 | 33.46%            |  |  |  | No            |                  1 | On Loan: No      |

### Signature

**Date Signed:** 2025-10-30

**Name of Applicant:** IMPAX FUNDS SERIES TRUST I

**Signature:** Daniel Saltus

**Name of Signer:** Daniel Saltus

**Title:** Treasurer