BRIEF-MDC Partners Files For Mixed Shelf Of Up to $1 Bln By: Reuters: Company News December 15, 2017 at 16:42 PM EST * MDC PARTNERS INC FILES FOR MIXED SHELF OF UPTO $1.0 BILLION - SEC FILING Source: (http://bit.ly/2zfQ924) Further company coverage: Read More >> Related Stocks: Mdc Partners Cl A