Billionaire Stephen Ross has named his son-in-law, Daniel Sillman, as the future leader of the Miami Dolphins. In an interview with Bloomberg, Ross said, “I’m fortunate.” He confirmed that he turned down a $15 billion offer for the team but did not disclose the identity of the potential buyer.
In 2024, Puck reported that a deal between Ross and Palm Beach billionaire Ken Griffin fell through at the last minute. That agreement would have valued both the Dolphins and Hard Rock Stadium at $7.5 billion.
Ross did not specify if Sillman will also manage Hard Rock Stadium or other sports assets owned by Ross. The billionaire also holds exclusive rights to host Formula 1’s Miami Grand Prix until 2041.
Ross bought the Dolphins in 2009 for $1 billion. Since then, NFL team values have increased sharply due to limited supply—there are only 32 teams—and strong media contracts.
Sillman has participated in interviews as the Dolphins look for a new general manager and head coach. He is co-founder and CEO of Relevent, a soccer media and events company supported by Ross’ RSE Ventures.
Recently, Ross relocated from New York City to West Palm Beach. Through Related Companies, he has focused on office investments in West Palm Beach with plans to develop it into a business hub. His firm secured South Florida’s largest construction financing package last month—a $772 million loan—for two office projects.
