| WS 11 Leiden B.V. | | | |
| BOSBOOM | JOHANNES | 1963-07 | Partner with Unlimited Liability |
| ESSENSTAM | JOHAN | 1957-07 | Partner with Unlimited Liability |
| KEIJER | HENDRIK | 1967-02 | Partner with Unlimited Liability |
| KRABBE | JOHAN | 1963-05 | Partner with Unlimited Liability |
| LOUWERSE | JACQUELINE | 1962-11 | Partner with Unlimited Liability |
| PIM | WILHELMUS | 1959-09 | Partner with Unlimited Liability |
| POELHEKKEN | THOMAS | 1959-09 | Partner with Unlimited Liability |
| SJARDIJN | MICHEL | 1974-07 | Partner with Unlimited Liability |
| STRAATHOF | ELISABETH | 1967-08 | Partner with Unlimited Liability |
| TILSTRA | LIESBETH | 1962-04 | Partner with Unlimited Liability |
| VAN DER TOUW | ROBERT | 1963-06 | Partner with Unlimited Liability |
| VAN LAAR | VINANDA | 1962-03 | Partner with Unlimited Liability |
| VAN LEEUWEN | RENE | 1959-06 | Manager |
| VERBERG | NICOLAAS | 1941-01 | Partner with Unlimited Liability |
| VERBERG | HANS | 1964-07 | Partner with Unlimited Liability |
| VERDEGAAL | RIMBERTHA | 1957-10 | Partner with Unlimited Liability |
| VERDEGAAL | ELISABETH | 1962-09 | Partner with Unlimited Liability |