Fast-casual restaurant chain Freddy’s is about to get new owners. Private-equity firm Rhone has agreed to acquire Freddy’s from Thompson Street Capital. Terms of the deal were not disclosed.

Freddy’s is known for its menu of made-to-order steak burgers, shoestring fries and frozen custard. The chain has more than 550 units systemwide.

Freddy’s current leadership team, including Chris Dull, president and CEO and Brian Wise, COO, will remain in place, per a release announcing the deal.

“We see a compelling opportunity to partner with Chris and the rest of the leadership team to help bring the unique Freddy’s offering to more customers around the world and support the company in this next chapter of growth,” said Lucas Flynn, a management director at Rhône in a statement announcing the deal.