Atlanta-based private equity firm Roark Capital Group is expanding its portfolio of restaurants with the purchase casual dining chain Miller’s Ale House.

The target’s owners — Jack Miller, investment firm KarpReilly LLC and SKM Equity Fund III — sold the Jupiter, Fla.-based chain for an undisclosed price. Miller’s Ale House, which consists of some 65 locations, is known for offering steaks, seafood and pasta, along with a menu of up to 75 different beers. It reported annual sales of roughly $300 million.

Phil Hickey, who is currently serving as chairman of the National Restaurant Association, joins Miller’s Ale House as chairman.

Roark Capital currently backs several other fast food and casual restaurant brands, including Arby's and Focus Brands, the parent company of Auntie Anne's, Carvel, Cinnabon, Moe's Southwest Grill and Schlotzsky's.

North Point Advisors and Ropes & Gray LLP advised Miller’s Ale House throughout the sale process.  The Ropes & Gray legal team was led by attorneys Nikhil Bodade, Mark Castiglia, Daniel Evans and Audrey Lee.

King & Spalding and DLA Piper advised Roark Capital.