S imone Maag de Moura Cunha is a Swiss billionaire heiress and a member of the Maag family, which holds a significant stake in the medical device company Straumann Holding. She is the granddaughter of the late Rudolf Maag, an entrepreneur who made his fortune in the medical technology sector. Rudolf Maag was a key figure at Synthes, a medical device company that was sold to Johnson & Johnson, and he was also an early and major investor in Straumann, a global leader in dental implants and oral care solutions.

Upon Rudolf Maag's death, his substantial wealth, including his large holding in the publicly traded Straumann, was passed down to his three granddaughters, including Simone. She, along with her sisters, now holds one of the largest stakes in the company. Simone Maag de Moura Cunha is not involved in the operational management of Straumann. Her fortune is derived from this inherited passive stake in the highly successful and growing dental technology company.