MDC Partners Inc. (MDCA) and Stagwell Marketing Group LLC Schedule Conference Call to Discuss Financial Results for the Three Months Ended June 30, 2021

NEW YORK, July 28, 2021

MDC Partners and Stagwell will host a joint video webcast and conference call to review those separate financial results the same day at 8:30 AM (ET). The video webcast will be accessible at https://kvgo.com/openexchange-inc/mdca-stagwell-earnings-call.

About MDC Partners Inc.

MDC Partners is one of the most influential marketing and communications networks in the world. As "The Place Where Great Talent Lives," MDC Partners is celebrated for its innovative advertising, public relations, branding, digital, social and event marketing agency partners, which are responsible for some of the most memorable and effective campaigns for the world's most respected brands. By leveraging technology, data analytics, insights and strategic consulting solutions, MDC Partners drives creative excellence, business growth and measurable return on marketing investment for over 1,700 clients worldwide. For more information about MDC Partners and its partner firms, visit our website at mdc-partners.com, sign up for investor-related updates and alerts, and follow us on LinkedIn.

About Stagwell Marketing Group

The Stagwell Marketing Group is the first and only independent, digital-first, and fully-integrated organization of size & scale servicing brands across the continuum of marketing services. Collaborative by design, Stagwell is not weighed down by legacy points of view and its people are united in their desire to innovate, evolve, grow and deliver superior results for their clients. Stagwell's high growth brands include experts in four categories: digital transformation and marketing, research and insights, marketing communications, and content and media. Stagwell is a private equity fund that owns all interests in Stagwell Marketing Group LLC through a wholly owned holding company named Stagwell Marketing Group Holdings LLC. Stagwell Marketing Group LLC and its businesses are managed by The Stagwell Group, a registered investment advisor. The address of Stagwell is 1808 Eye Street, Floor 6, Washington, D.C., 20006.