Cirrus Logic announces resignation of Chief Financial Officer Venk Nathamuni, and names Principal Accounting Officer Ulf Habermann interim CFO, effective with Nathamuni’s Friday departure ... Box adds Epicor Software CEO Steve Murphy to its board, replacing John Park as investor KKR’s board designee ... AEG Presents promotes Senior Vice President-Venue Operations Nick Spampanato to chief operating officer-venues ... Regal rehires Rob Westerling, ex-Harkins Theatres, as senior vice president-U.S. content, effective June 3; he previously spent 21 years at Regal, most recently as head-film ... Media.Monks, digital advertising and marketing services company, promotes Laurent Farci to chief information officer.