IRVINE--(BUSINESS WIRE)--Khang & Khang LLP (the “Firm”) reminds investors in MDC Partners, Inc. (“MDC” or the “Company”) (NASDAQ: MDCA), who purchased or otherwise acquired shares between September 24, 2013 and April 27, 2015, inclusive (the “Class Period”), of the September 29, 2015 deadline to serve as lead plaintiff in the class action. If you purchased shares of MDC during the Class Period, please contact Joon M. Khang, Esquire, of Khang & Khang, 18101 Von Karman Avenue, 3rd Floor,