Billionaire mortgage lender Mat Ishbia is finalizing a purchase of the Phoenix Suns and WNBA's Mercury for a record price of $4 billion, sources told ESPN on Tuesday.

The deal, expected to be announced as soon as Tuesday, will end the tumultuous tenure of owner Robert Sarver.

Justin Ishbia, a founding partner in Shore Capital, will make a significant investment and serve as alternate governor, sources told ESPN. He is Mat's brother.

The Suns' record sale marks a new day in the escalating valuations of NBA teams. Joe Tsai bought the Brooklyn Nets for an NBA-record $2.35 billion in 2019. Prior to that sale, Tilman Fertitta purchased the Houston Rockets for $2.2 billion in 2017, with Steve Ballmer buying the LA Clippers for $2 billion in 2014.

The Lakers had a minority share sold for a higher valuation than the Suns' $4 billion purchase, landing a $5 billion valuation.

Ishbia, President and CEO of United Wholesale Mortgage, a Michigan-based company, has been pursing NBA and NFL teams in recent years and finally lands on a deal to own the Suns. Ishbia was a walk-on for Michigan State and part of the Spartans' 2000 national championship team. He has remained closed with Hall of Fame coach Tom Izzo, and previously made a $32 million donation to the basketball program.

The sale will end Sarver's tenure with the Suns, which dates back to 2004, when he led a group to buy the team for a then-record $401 million from Jerry Colangelo.

Sarver announced Sept. 21 that he would be selling the Suns and the Mercury in mid-September soon after the NBA announced its findings from a 10-month investigation into his conduct as majority owner of the Suns.

The NBA commissioned that investigation, led by the New York-based lawfirm Wachtell Lipton, in the wake of an ESPN story in November 2021 detailing allegations of racism and misogyny during Sarver's 17 years as owner.

As part of the league's punishment, announced on Sept. 13, Sarver was fined $10 million and suspended for a year, though growing outrage led to him announcing that he was selling the Suns and the Mercury soon after.

Sarver chose the investment bank Moelis & Company to oversee the sale, and investment bank officials who have managed the sales of professional sports franchises previously told ESPN that they expect the transaction's final price to set a record.

In September, Suns executive vice president and CFO Jim Pitman relayed to team employees that a fully executed sale of the team could take six to nine months, team sources said then, a timeline that would stretch through the 2022-23 season.

But in recent weeks, team employees told ESPN that groups of prospective bidders were seen touring team facilities. Sarver owns about a third of the franchise, but he has the authority as the team's managing partner to sell the team in full, sources have told ESPN.

ESPN's Baxter Holmes contributed to this report.