|This article does not cite any sources. (September 2012)|
|Traded as||NASDAQ: MDCA, TSX: MDZ.A|
|Headquarters||New York City, USA / Toronto, Canada|
|Miles S. Nadal|
MDC Partners Inc. (NASDAQ: MDCA, TSX: MDZ.A) is a holding company based in New York City, United States and Toronto, Canada. It was founded as Multi Discipline Communications Inc in 1980 by Miles Nadal who until 2015 served as the CEO of MDC Partners.
Unlike other holding companies, MDC positions itself as a "partner," taking majority stakes, generally 60-80%. It has invested in companies in many sectors: advertising, B2B, branding, crisis management, digital/interactive, direct marketing, experiencial marketing, entertainment, investor relations, media buying, media planning, multicultural advertising, PR, product innovation, publishing, social media, strategic planning. MDC Partners is a publicly traded company, trading on both the NASDAQ exchange under the symbol of MDCA and the Toronto Stock Exchange under the symbol MDZ.A. Major holdings include Crispin Porter + Bogusky, Kirshenbaum Bond Senecal + Partners, 72andSunny, Anomaly, Doner, Redscout, Kwittken & Company, and The Media Kitchen  
On July 21, 2015, Miles Nadal announced his resignation as CEO in response to an investigation by the United States Securities and Exchange Commission regarding executive pay and accounting practices. Nadal agreed to pay back $1.9 million in expenses and $10.6 million in salary and bonuses. He will not receive any severance or compensation for resigning. Chief accounting officer Michael Sabatino also announced his resignation and will reportedly repay $208,000 in bonuses. Scott Kauffman, formerly a board director, assumed the board chairperson and CEO duties.