No. 302Switzerland
Ernesto Bertarelli
Biotech, investments · Gstaad
Net worth
$11.5B
Today
+$780K+0.01%Past month
−$10M−0.08%As of Nov 11, 2026, 1:50 PM EST
Ernesto Bertarelli inherited biotech giant Serono, maker of the multiple sclerosis drug Rebif, following his father's death in 1998. With his sister Dona, he expanded the company to $2.4 billion in revenues before selling it to Merck for over $13 billion in 2007. Ernesto and Dona co-chair the Bertarelli Foundation, which focuses on marine conservation and life sciences research. The family's B-Flexion Group has investments ranging from commercial real estate in London to drug companies. He also owns the superyacht Vava II.
Net worth over time
−0.08%−$10M over the past month
$11B$11B$11B
Oct 12Nov 11
Principal holdings
2 positions| Company | Industry | Share | Value |
|---|---|---|---|
Private and other holdings | Healthcare | 99.6% | $11.4B |
Aston Martin Lagonda Global Holdings LONDON: AML-GB | Healthcare | 0.4% | $50M |
Also known for
- Kirsty, Ernesto's wife, is a former Miss UK and a singer-songwriter; she co-wrote a chart-topping song for a British girl group.
- A yacht enthusiast, his Team Alinghi won the America's Cup in 2003 and 2007.