- Sanofi-Aventis extends Genzyme offer, terms unchanged 13 December 2010
- Genzyme to sell genetic testing business to LabCorp for $925 million 13 September 2010
- Sanofi Aventis reportedly raises offer to $71 per share 09 September 2010
- Sanofi-Aventis reveals $18.5-billion offer for Genzyme 30 August 2010
- Genzyme begins takeover talks with Sanofi-Aventis 03 August 2010
- Genzyme starts shipments of drugs for two rare disorders 02 December 2009