Roundy’s, Milwaukee, said Thursday Darren Karst, executive vice president and chief financial officer, will leave the company next month to join Rite Aid Corp., where he will be EVP and CFO.

Succeeding Karst at Roundy’s will be Michael Turzenski, group vice president and chief accounting officer. His new title will be group vice president and CFO.

Turzenski, who joined Roundy’s in 2007 as vice president, controller, has held his current title since early 2012. Karst has been with Roundy’s since mid-2002.

According to Robert A. Mariano chairman, president and CEO, “Darren has been a significant contributor to our growth, and he leaves us with a talented management team that he developed. Mike has played a very active role in executing our business objectives.”

Andrew Wolf, managing director for BB&T Capital Markets, Boston, said Karst’s decision to leave is “somewhat surprising,” noting that Mariano and Karst have been partners at Roundy’s and before that Dominick’s.