Series and Classes/Contracts Information:
| Existing | |||
| Status | Name | Ticker Symbol | |
| CIK 0000831114 | |||
| Series S000001094 | Boston Partners Small Cap Value Fund II | ||
| Class/Contract C000002982 | INSTITUTIONAL | BPSIX | |
| Class/Contract C000002983 | INVESTOR | BPSCX | |
| Status | Name | Ticker Symbol | |
| CIK 0000831114 | |||
| Series S000001097 | WPG Partners Small Cap Value Diversified Fund | ||
| Class/Contract C000002987 | INSTITUTIONAL | WPGTX | |
| Status | Name | Ticker Symbol | |
| CIK 0000831114 | |||
| Series S000001106 | Boston Partners All-Cap Value Fund | ||
| Class/Contract C000002997 | INSTITUTIONAL | BPAIX | |
| Class/Contract C000002998 | INVESTOR | BPAVX | |
| Status | Name | Ticker Symbol | |
| CIK 0000831114 | |||
| Series S000001108 | Boston Partners Long/Short Equity Fund | ||
| Class/Contract C000003001 | INSTITUTIONAL | BPLSX | |
| Class/Contract C000003002 | INVESTOR | BPLEX | |
| Status | Name | Ticker Symbol | |
| CIK 0000831114 | |||
| Series S000030191 | Boston Partners Long/Short Research Fund | ||
| Class/Contract C000092912 | Investor Class | BPRRX | |
| Class/Contract C000092913 | Institutional Class | BPIRX | |
| Status | Name | Ticker Symbol | |
| CIK 0000831114 | |||
| Series S000035438 | Boston Partners Global Equity Fund | ||
| Class/Contract C000108833 | Investor Class | BPGRX | |
| Class/Contract C000108834 | Institutional Class | BPGIX | |
| Status | Name | Ticker Symbol | |
| CIK 0000831114 | |||
| Series S000051361 | Boston Partners Emerging Markets Dynamic Equity Fund | ||
| Class/Contract C000161908 | Institutional Class | BELSX | |
| Status | Name | Ticker Symbol | |
| CIK 0000831114 | |||
| Series S000074882 | Boston Partners Global Sustainability Fund | ||
| Class/Contract C000233241 | Institutional Class | BPGSX | |
| Status | Name | Ticker Symbol | |
| CIK 0000831114 | |||
| Series S000074886 | WPG Partners Select Small Cap Value Fund | ||
| Class/Contract C000233246 | Institutional Class | WPGSX | |
| Status | Name | Ticker Symbol | |
| CIK 0000831114 | |||
| Series S000084877 | WPG Partners Select Hedged Fund | ||
| Class/Contract C000249499 | Institutional | WPGHX | |
EIN.: 510312196 | State of Incorp.: MD | Fiscal Year End: 0831
Type: 497 | Act: 33 | File No.: 033-20827 | Film No.: 25957576