Sanofi Investors Question Choice of CEO With ‘Huge Task’ Ahead

For Belen Garijo, returning to her former employer Sanofi might seem like something of a homecoming, but there’s little to suggest it will be easy.

The 65-year-old, who will take the helm at the French drugmaker end-April, is coming from the German science group Merck KGaA, where she spent 15 years — about five of them as its chief executive officer.