Beverly Hills-based Mastro Group was acquired by Rare Restaurant Group for $190 million.

Mastro’s operates seven steakhouses, including a Beverly Hills flagship near Spago on Canon Drive. The chain has five other locations in Southern California and another in Scottsdale, Ariz.

Rare Restaurant is backed by Kinderhook Capital Fund II LP and George Soros’ Soros Strategic Partners LP. Kinderhook owns 42 percent of Rare Restaurant.

Soros’ share is 45 percent. Management and co-investors own the rest.

Houlihan Lokey Howard & Zukin LLP advised Mastro Group on the deal.