| Impax Sustainable Allocation Fund | Investor Class | PAXWX | — |
| Impax Sustainable Allocation Fund | Institutional Class | PAXIX | — |
| Impax High Yield Bond Fund | Investor Class | PAXHX | — |
| Impax High Yield Bond Fund | Institutional Class | PXHIX | — |
| Impax High Yield Bond Fund | Class A | PXHAX | — |
| Impax US Sustainable Economy Fund | Investor Class | PXWGX | — |
| Impax US Sustainable Economy Fund | Institutional Class | PWGIX | — |
| Impax US Sustainable Economy Fund | Class A | PXGAX | — |
| Impax Global Environmental Markets Fund | Investor Class | PGRNX | — |
| Impax Global Environmental Markets Fund | Institutional Class | PGINX | — |
| Impax Global Environmental Markets Fund | Class A | PXEAX | — |
| Impax Small Cap Fund | Investor Class | PXSCX | — |
| Impax Small Cap Fund | Institutional Class | PXSIX | — |
| Impax Small Cap Fund | Class A | PXSAX | — |
| Impax International Sustainable Economy Fund | Institutional Class | PXNIX | — |
| Impax International Sustainable Economy Fund | Investor Class | PXINX | — |
| Impax Large Cap Fund | Institutional Class | PXLIX | — |
| Impax Large Cap Fund | Investor Class | PAXLX | — |
| Impax Core Bond Fund | Institutional Class | PXBIX | — |
| Impax Core Bond Fund | Investor Class | PAXBX | — |
| Impax Global Sustainable Infrastructure Fund | Institutional Class | PXDIX | — |
| Impax Global Sustainable Infrastructure Fund | Investor Class | PAXDX | — |
| Impax Global Opportunities Fund | Institutional Class | PXGOX | — |
| Impax Global Opportunities Fund | Investor Class | PAXGX | — |
| IMPAX GLOBAL SOCIAL LEADERS FUND | Investor Class | IGSLX | — |