Toby Jenner Named Global CEO of Wavemaker

NEW YORK & LONDON, July 11, 2019 – GroupM agency Wavemaker today named Toby Jenner Global CEO. Jenner, most recently MediaCom’s Worldwide Chief Operations Officer, succeeds Tim Castree who was named GroupM’s North American CEO in December. Jenner will lead Wavemaker’s 8,600 employees who manage $13 billion in billings (COMvergence) for blue-chip clients in 90 countries. Reporting to Kelly Clark, GroupM’s Global CEO, Jenner will transition from his current MediaCom role over the summer and begin his new Wavemaker role in September.

“Toby has been an outstanding contributor to our group’s growth for more than 15 years. In his 11 years at MediaCom, he’s been instrumental in delivery of breakthrough client work, a winning streak on award circuits regionally and globally, and powerful business development performance,” said Clark. “Toby is passionate about helping our clients win and is a fierce competitor for them, as well as for our business. He inspires our people to consistently exceed expectations and supports them in their own career development. He will be a strong leader with the very talented team at Wavemaker.”

Since its launch in 2017, Wavemaker has invested heavily in new capabilities in precision marketing, commerce, and content marketing, and Wavemaker teams around the world have won 67% of pitches, with more than 300 new clients joining the agency’s roster during that time.

Prior to his current position, Jenner held the MediaCom roles of Global Chief Business Development & Marketing Officer, Asia Pacific COO, and CEO of Australasia. He originally joined GroupM as Managing Director of MEC in the UK.

“I’m really looking forward to meeting my new colleagues and our clients at Wavemaker in the coming months,” said Jenner. “I’m fortunate to join a business with very strong local markets, a great team, a great client portfolio, and a track record in delivering growth for brands. Like any business, I’m sure there are areas where we can be stronger. We’ll address those as a team and take the agency on to even greater success moving forward.”

“I’d like to thank everyone at MediaCom. Across 11 years, 4 different continents and 4 different roles, I’ve had the opportunity to meet the most amazing people who’ve all been instrumental in preparing me for this new chapter,” Jenner added.


We believe there always is a better way to grow. We positively provoke growth for our clients by reshaping consumer decision-making and experiences through media, content and technology. The Wavemaker way is globally consistent. Fuelled by the world’s most powerful consumer data, we understand where and how marketing can intervene decisively to help brands win more sales. Our 7,600 people across 90 markets have the deep knowledge, confidence and courage to provoke growth for some of the world’s leading brands and businesses.