Sure, you know all about the recent $4 billion sale of the UFC to William Morris Endeavor-International Management Group. But have you heard about the 23 new owners?

UFC officials confirmed to The Wall Street Journal on Thursday that 23 celebrities have invested in the world’s largest MMA promotion. Included are sports stars Tom Brady, Cam Newton, Maria Sharapova, and Serena and Venus Williams, actors Ben Affleck and Mark Wahlberg, musicians Adam Levine and LL Cool J, and talk show host Conan O’Brien.

MMAjunkie subsequently confirmed the deals with multiple UFC representatives.

O’Brien also announced the deal on Thursday’s new episode of “Conan” on TBA, jokingly adding that he would soon be competing in the octagon.

Terms of the investments weren’t revealed. A full list of the 23 celebrities is expected to be released Friday.

WME-IMG co-CEO Ari Emanuel said selecting the 23 for potential investment was simple.

“They would always ask for tickets,” Emanuel told The Wall Street Journal, adding, “I think it’s a mainstream sport now.”

According to The Wall Street Journal, “Further WME-IMG plans for the UFC include more programming on the UFC’s digital subscription service, which would provide more than just fights. The company also wants to see more UFC fighters cross over to other forms of entertainment, as its client UFC champion Ronda Rousey has done with some small roles in movies such as ‘Furious 7.'”

WME-IMG is a leading talent agency. The company’s acquisition of the UFC was announced in July, with Silver Lake Partners and KKR also along as investors, along with MSD Capital/MSD Partners.

In 2001, Lorenzo and Frank Ferttita purchased the UFC for $2 million from Semaphore Entertainment Group. The $4 billion sale was the largest such transaction for a franchise in sports history – an increase of nearly 200 thousand percent from the original $2 million price tag.

For more on the UFC’s upcoming schedule, check out the UFC Rumors section of the site.