• by Joe Mandese  @mp_joemandese, July 18, 2019

Art Muldoon and Matt Greitzer, co-founders of independent agency trading desk Accordant Media and co-CEOs of Dentsu Aegis Network’s Amnet Group, have left the company.

Muldoon and Greitzer founded Accordant as an independent agency trading desk in 2010 and sold it to DAN in September 2016 for an undisclosed amount.

While Accordant continues to operate as an autonomous offering, Muldoon and Greitzer were named co-CEOs of DAN’s internal programmatic trading unit Amnet, and the companies' technology and teams have been integrated.

Their departure was part of a succession plan, and follows the elevation of two key executives -- Accordant President Garret Vreeland and Amnet Managing Director Christina Mohebbi -- earlier this year.