Cheese Marketer Bel Group Picks Mediavest | Spark for Media

By Jessica Wohl (Advertising Age)


CEO Who 'Embodies a New Kind of Leadership' Wins Big Chicago AdFed Award

Chris Boothe is the recipient of the Chicago Advertising Federation's 2016 Silver Medal Award


KFC's $230 Million Media Business Goes to Mediavest | Spark

By Patrick Coffee (Adweek)


Mattel Taps Publicis' Mediavest | Spark, DigitasLBi for $150 Million Account

By Lindsay Stein, Adrianne Pasquarelli (Advertising Age)

Who We Are

Mediavest | Spark is a full-service media agency that offers the best of both worlds – a startup spirit backed by a powerhouse soul.

We are a proud member of the Publicis Media network.

We combine the kind of high-touch customer service and insights clients expect from a boutique agency with the marketplace clout, technology infrastructure, and category and marketplace context of a global leader. For clients, that means no more trade-offs.

By fusing the complementary pieces of Publicis Media agencies Spark and Mediavest – our geographic hubs, talent, tools, and processes – and by creating an exciting new culture, we’ve established a true “destination agency” for the best clients and people. 

We’ve taken to referring to our newfound advantage as “the power of plus” – a jolt of energy that occurs when two or more entities come together to create greater value. Whether we’re talking about art and science, data and insights, or content and programmatic, it’s clear that effectively combining disparate entities is at the very heart of achieving exceptional business results today through media.

We hope you’ll take a few moments to learn more about us, and to begin thinking about how we might put “the power of plus” to work for you.

What We Do

Data, Technology & Innovation



Business Transformation

Analytics, Research & Insights

Trading & Buying

Media Strategy



Where We Are

Mediavest | Spark is a global company with over 3,500 employees across 28 global markets.


222 W. Merchandise Mart Plaza
Suite 550, Chicago, IL 60654

New York

1675 Broadway
New York, NY 10019

Los Angeles

2301 Rosecrans Ave
El Segundo, CA 90245


150 West Jefferson, Suite 300
Detroit, MI 48226


424 2nd Avenue West
Seattle, WA 98119


1230 Peachtree Street NE
Suite 500
Atlanta, Georgia 30309


63 Turnmill St.
London EC1M 5RR, United Kingdom

Our Leadership

Chris Boothe

Chief Executive Officer

Chris has shaped Mediavest | Spark into one of the leading agencies in the industry. His leadership, energy and strategic intellect have transformed the agency into an innovative media shop with a high-touch approach to planning and servicing clients.

Brent Lux

Growth & Business Development

Brent oversees business development and product and leads both strategy and product development across a wide variety of client and strategy teams. He is a pivotal component in the pursuit of new client partnerships within the agency, having been credited with leading several of Spark’s new business wins.

Sarah Kramer

Client & Chief Operating Officer

Sarah is a strategic product catalyst, with a distinguished track record of leveraging performance management systems to gain new levels of alignment between agencies and client goals. Sarah is a passionate advocate for bringing research and analytics to the forefront to elevate consumer understanding within marketing process.

John Muszynski

Chief Investment Officer

John leads negotiations for all Mediavest | Spark clients, delivering media savings and best pricing in the marketplace. He continually drives innovation in advanced media marketplaces and technologies. He is a celebrated industry icon, having won many honors including Broadcasting & Cable Hall of Fame and AdWeek’s Top 50.

For general inquiries, please contact | (312) 970-8400

For New Business inquiries, please contact


Join the Mediavest | Spark family.