Sean Finnegan

Partner at Chameleon Collective

A digital leader and one of the advertising industry’s first interactive media strategists, Sean Finnegan brings a veteran’s perspective to new opportunities in communications, changed by personal media, mobility and digitized social interaction. A trusted leader for global advertising accounts, Sean has successfully navigated major media evolutions and created sustainable growth for clients, agencies and publishers. This experience arms Sean with a seasoned point-of-view as the advertising industry re-engineers to address the challenges faced by today’s marketers, hoping to make sense of the seismic paradigm-shift from national media to a universe of Digital channels.

As a prominent member of digital advertising industry groups such as the American Advertising Federation, where he serves as Digital Chair, Sean is a leader that values industry connectivity to build well-rounded and growth-oriented organizations. Leveraging a proven ability to sense and capture opportunity, Sean is assertively forging strategic inroads with the industry’s most influential communications companies as the merging of advertising, entertainment and consumer media bear meaningful opportunities for advertisers in the Digital space. This is demonstrated by his founding of The C4 Group, where Sean and his team guide Media Companies with the art of better story-telling, go to market strategies and deeper awareness in the Digital space. Sean also maintains connectivity with the start-up and ventures community through his Built In Chicago membership as well as partnership with DMR Partners.

Sean has carved a unique path for brands and marketers in consumer-driven media by maintaining a pure, people-focused approach to advertising. Sean has held digital leadership roles at major agency and media owner organizations. In a past role as CEO of IPG’s Geomentum, he drove the company’s hyper-local platform by engineering a full-service agency model to enable top retail brand advertisers to operate from a national to neighborhood level approach. Prior to IPG, Sean served as President, Chief Digital Officer at Starcom MediaVest Group where he drove the network’s digital strategy, developing digital communications products, proprietary tools and technology applications. Sean also directed a worldwide video advertising network as Chief Marketing Officer of Vibrant Media. As a leader in Omnicom Media Group, Sean was Chief Executive Officer of OMG Digital where he led its global management team and developed functional services in digital investment, search, mobile, gaming, futures, analytics and ad operations.

For his outstanding contributions to the industry, Sean has been named an AAF Advertising Hall of Achievement inductee, an Advertising Age Media Maven, a Media All Star for Mediaweek Magazine, a MediaPost All Star, one of min magazine´s 21 Most Intriguing People, and Internationalist Magazine Agency Innovator and OnMedia’s Madison Avenue “IT” List. Sean is also a proud co-founder and board member of the Tom Deierlein Foundation (, an organization dedicated to helping needy families and children both nationally and internationally with their most basic living needs including medical care.