425 1 stag20210504_425.htm FORM 425 Image Exhibit

Filed by Stagwell Group LLC

pursuant to Rule 425 under the U.S. Securities Act of 1933, as amended,

and deemed filed pursuant to Rule 14a-12

under the Securities Exchange Act of 1934, as amended

Subject Company: MDC Partners, Inc.

Commission File No.: 001-13718


Date: May 5, 2021