They also recently opened a location in Phoenix, Arizona, and plan to expand further in that area.

The move to take on equity funding will help the chain’s expansion through BDT’s experience, advice and contacts.

“Serving legendary deep dish pizza in an environment of fun with dedicated people remains our primary goal,” Marc Malnati said in a statement. “Our customers can expect the same quality and excellence in both product and hospitality that they have experienced over the past 46 years, while BDT’s growth capital and valuable support will help our company achieve our long-term objectives.”

BDT’s experience in advising and investing in family businesses will benefit Lou Malnati’s, said Bryon D. Trott, BDT chairman and CEO.

“Lou Malnati’s Pizzeria is an iconic family business with passionate leadership, dedicated employees, a great brand and exceptional products and customer service,” Trott said in a statement. “We look forward to partnering with Marc Malnati and his strong management team to continue to build upon the Malnati legacy and help them grow in Chicago and beyond.”