LOS ANGELES--(BUSINESS WIRE)--Goldberg Law PC (www.Goldberglawpc.com) announces that a class action lawsuit has been filed in the United States District Court for the Southern District of New York against MDC Partners Inc. (“MDC” or the “Company”) (NYSE: MDCA), for alleged violations of the federal securities laws. Investors who purchased or otherwise acquired shares between September 24, 2013 and April 27, 2015, inclusive (the “Class Period”), have until September 29, 2015 to serve as lead pla