NicOx, a French biotechnology company, has turned to SG Cowen to lead a €69.5m ($61.4m) secondary offer after using Credit Suisse First Boston for its initial public offering.

The biotechnology firm floated on the Nouveau Marché in November 1999 in an offer led by CSFB with SG, the investment banking arm of Société Générale, as co-lead manager.