| COSTE | VALENTINE | 1924-02 | Manager |
| COSTE | PHILIPPE | 1953-03 | Partner with Unlimited Liability |
| COSTE | MARIE | 1964-10 | Partner with Unlimited Liability |
| COSTE | LAURENT | 1954-08 | Partner with Unlimited Liability |
| COSTE | BEATRICE | 1927-01 | Partner with Unlimited Liability |
| COSTE | ANNE-SOPHIE | 1970-05 | Partner with Unlimited Liability |
| SCHLUMBERDER | ARNAUD | 1990-02 | Partner with Unlimited Liability |
| SCHLUMBERGER | WILFRID | 1975-05 | Partner with Unlimited Liability |
| SCHLUMBERGER | ROLAND | 1993-10 | Partner with Unlimited Liability |
| SCHLUMBERGER | REMI | 1992-02 | Partner with Unlimited Liability |
| SCHLUMBERGER | NICOLAS | 1948-12 | Partner with Unlimited Liability |
| SCHLUMBERGER | MARTIN | 1950-05 | Partner with Unlimited Liability |
| SCHLUMBERGER | MARION | 1995-02 | Partner with Unlimited Liability |
| SCHLUMBERGER | MARCEAU | 1972-03 | Partner with Unlimited Liability |
| SCHLUMBERGER | LOUIS | 1989-08 | Partner with Unlimited Liability |
| SCHLUMBERGER | HENRI | 1952-06 | Manager |
| SCHLUMBERGER | GUILLAUME | 1959-01 | Partner with Unlimited Liability |
| SCHLUMBERGER | EDOUARD | 1986-04 | Partner with Unlimited Liability |
| SCHLUMBERGER | CONSTANCE | 1985-06 | Partner with Unlimited Liability |
| SCHLUMBERGER | CHARLOTTE | 1981-05 | Partner with Unlimited Liability |
| SCHLUMBERGER | AURELIEN | 1984-05 | Partner with Unlimited Liability |
| SCHLUMBERGER | ARMELLE | 1978-12 | Partner with Unlimited Liability |