Sean Corcoran, president of MissionOne Media and longtime agency leader, joins co-hosts Olivia Morley and Brian Wieser to discuss the launch of MissionOne within the growing “big indie” platform BarkleyOKRP—and what it takes to build a media brand inside a full-service agency structure.

Sean walks through his career path, from political work and affiliate marketing to stints as a Forrester analyst and co-founder of Mediahub. He explains how his experience defining media categories and evaluating agencies from the outside shaped his approach to building challenger shops on the inside.

At MissionOne, he’s aiming to blend the tech-forward strengths of acquisition Adlucent with a human-first, creative-led philosophy. He also unpacks how integrated P&L models help avoid internal competition, what it’s really like working with private equity backers like Keystone, and why the “murky middle” is the most dangerous place for agencies to be.

Plus, Olivia, Brian, and Sean discuss:

Omnicom CEO John Wren’s $1 salary contract extension through 2028.
Keurig Dr Pepper’s decision to disband its in-house agency, Liquid Sunshine.
Dentsu’s ongoing struggles in the U.S. market.
Globant’s surprising earnings guidance downgrade.

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Agency Business features agency CEOs and financial decision-makers alongside third party experts including agency pitch consultants. We are always accepting pitches, and are particularly interested in hearing from women and leaders of color.

Email us!

📩 Brian at brian@madisonandwall.com

📩 Olivia at olivia@fusionfrontmedia.com

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📊 The Madison and Wall Podcast – Brian opens up about his latest work — plus crucial economic, financial, and industry trends.

🎬 Screen & Sponsor – Olivia & VaynerMedia's Jessie Holder explore how brands are shaping Hollywood.

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