What family owns Roche?

I'm curious, who exactly is the family behind the pharmaceutical giant Roche? I understand that it's a multinational company with a rich history, but I'm particularly interested in knowing the family lineage and their role in shaping the company we know today. Are they still actively involved in the decision-making process, or have they taken a more passive role over the years? It would be fascinating to learn more about their story and how it's intertwined with the success of Roche.