The Brooklyn Nets will soon have a new minority ownership group. Billionaire Julia Koch has agreed to buy a 15 percent stake in BSE Global, the parent company of the Brooklyn Nets, New York Liberty and the Barclays Center, according to Sportico. The deal valued the company at $6 billion.

Julia, the widow of David Koch–who ran Koch Industries and died in 2019–was in talks to buy a 10 percent stake in the team in February. The NBA's financial advisory committee approved the sale, and league governors must vote on it by June 24. Koch Industries is not involved in the purchase.

Koch and her family have a net worth of $60.6 billion, the 23rd-highest in the world, according to Forbes. She will be investing alongside her three children—David Jr., Mary Julia and John. The family purchasing a stake in the Nets would make them the second-wealthiest ownership group in the NBA and third-wealthiest all of American Sports, trailing only the Los Angeles Clippers' Steve Ballmer ($122 billion) and Denver Broncos' Rob Walton ($75 billion).

“I want to emphasize that both our families are committed to making the necessary investments in our franchises to build a sustainable winning culture,” Nets majority owner Joe Tsai said Tuesday in a letter to BSE employees. “As well as in the people and physical infrastructure to bring the best of sports and entertainment to our fans and audiences.”

While Joe and Clara Wu Tsai will maintain control of the Nets, the transaction will give Koch the right to make a first offer if there is a sale of the controlling interest in the franchise. Tsai completed his purchase of the Nets from Mikhail Prokhorov in 2019 at a valuation of $2.35 billion. He eventually paid a total of $3.5 billion to gain control of both the team and Barclays Center.

Brooklyn is now valued at $3.85 billion, not including the arena, according to a list put out by Forbes ahead of this season. That is the 13th highest in the NBA. The Liberty are the WNBA's fourth most valuable team with a valuation of $130 million, according to Sportico.

Koch's purchase at the $6 billion valuation comes ahead of the NBA's new $76 billion television deal, which is expected to double the league's income from its media partners. The sale would be among the highest valuations of all time for a professional sports team.