Mark Grether

Mark is the CEO of Sizmek, where he is focused on guiding the company and its leadership team and accelerating the growth of the business. Prior to Sizmek, Mark was the cofounder and global Chief Operating Officer of WPP’s Xaxis, which under his leadership grew into the largest programmatic media company in the world, with more than $1 billion in revenue in just five years. Prior to Xaxis, he was Global Development Director of GroupM, the world’s largest media investment group, where he was instrumental in setting up GroupM’s digital trading desk across 10 countries.

Graeme Smith

Graeme joined as COO following Amazon’s acquisition of the Sizmek Ad Server and Sizmek DCO. Graeme brings over 13 years of experience at Amazon, where he has led product, engineering and science teams, and grown their Edinburgh Development Centre. Over the past 8 years, Graeme and his teams have invented and worked with many of Amazon Advertising’s products and technologies. In his spare time, Graeme can be found running the Scottish Highlands and swimming in lochs.

Sascha Wittler

CFO Sascha Wittler uses his global knowledge of accounting, financial planning and analysis, M&A, and corporate strategy to help ensure Sizmek’s success. Sascha honed his financial acumen most recently as a Chief Financial Officer at ProSiebenSat.1 Group; Worldwide GroupM Connect, GroupM’s worldwide consolidated digital agency platform; and Quisma GmbH. When he’s not overseeing Sizmek’s financial future or spending time with his wife and two kids, Sascha swims, cycles, and runs, always keeping his eye on the next triathlon, or you know, “just” a marathon, to take on.

Lisa Craven

As Chief People Officer, Lisa Craven focuses on every aspect of the people of Sizmek, including discovering and fostering talent, nurturing learning and development, and ensuring diversity and inclusion. In addition to her work as an executive coach, author, and wellness expert, at Xaxis, Lisa was Vice President, Global Human Resources, where she was recognized as a global top performer for increasing employee engagement and reducing employee turnover, and for the company achieving the Crain’s Best Place to Work in NYC award.

Paul Wright

Paul Wright’s experience as a corporate leader, technology lead, client, agency person, strategist, consultant, entrepreneur, and board advisor brings a uniquely rounded approach to the Sizmek leadership team. Prior to joining, Paul held a wide range of roles, including CEO of iotec, a demand-side platform, Director of EMEIA and APAC iAd, Apple’s digital advertising platform, and Chief Digital Officer at Omnicom Media Group, UK. Paul was also recently shortlisted for Diversity Leader of the Year by Information Age and is a trained mentor.

Peter Hunter

Partnerships, strategic planning, and innovation—Peter Hunter bases everything he does around these objectives in his role as Sizmek General Manager, APAC. Prior to Sizmek, Peter expanded Eyeota’s product line and capabilities for ANZ as General Manager, and held senior roles at Quantcast, PHD, Inlink Media, and Dentsu Aegis’s iProspect. Raised on a farm in New Zealand where he rode a horse to school each day, Peter traded in his saddle for a steering wheel, which he uses to compete in the Sim Racing world.

Volker Hatz

As Chief Product Officer, Volker Hatz oversees Sizmek’s fast-growing data business, including data governance solutions and analytics initiatives, and product marketing. Prior to joining Sizmek, Volker was Global Head of SAP XM DMP Solution at SAP Exchange Media. Throughout his career, he’s played key roles in creating groundbreaking technology to bring structure to the stores of data that digital advertising has uncovered, including the first demand-side advertising platform, the first second-party data management platform, and the first real-time cookie-less targeting.

Markus Plattner

As Chief Technology Officer, Markus Plattner leads innovation creation and manages Sizmek’s product engineering and IT teams. With more than 25 years of experience in designing, implementing, and operating highly scalable software solutions, Markus specializes in data management and advertising platforms, which has led him to play instrumental roles in building world-class solutions at GroupM, Xaxis, Quisma, and Eyewonder.

George Pappachen

George Pappachen is General Counsel for Sizmek. During his 20-plus years in practice, George has managed a full range of business and legal matters including corporate development, strategic partnerships, complex transactions, compliance, litigation, and data privacy. George has testified before the U.S. Congress, European Commission, and Federal Trade Commission on consumer data and commercial applications. In 2009, George was appointed Chief Privacy Officer of Kantar, a first for the organization and the industry.

Sizmek CEO Mark

Mark is the CEO of Sizmek, where he is focused on guiding the company and its leadership team and accelerating the growth of the business. Prior to Sizmek, Mark was the cofounder and global Chief Operating Officer of WPP’s Xaxis, which under his leadership grew into the largest programmatic media company in the world, with more than $1 billion in revenue in just five years. Prior to Xaxis, he was Global Development Director of GroupM, the world’s largest media investment group, where he was instrumental in setting up GroupM’s digital trading desk across 10 countries.

Graeme joined as COO following Amazon’s acquisition of the Sizmek Ad Server and Sizmek DCO. Graeme brings over 13 years of experience at Amazon, where he has led product, engineering and science teams, and grown their Edinburgh Development Centre. Over the past 8 years, Graeme and his teams have invented and worked with many of Amazon Advertising’s products and technologies. In his spare time, Graeme can be found running the Scottish Highlands and swimming in lochs.

CFO Sascha Wittler uses his global knowledge of accounting, financial planning and analysis, M&A, and corporate strategy to help ensure Sizmek’s success. Sascha honed his financial acumen most recently as a Chief Financial Officer at ProSiebenSat.1 Group; Worldwide GroupM Connect, GroupM’s worldwide consolidated digital agency platform; and Quisma GmbH. When he’s not overseeing Sizmek’s financial future or spending time with his wife and two kids, Sascha swims, cycles, and runs, always keeping his eye on the next triathlon, or you know, “just” a marathon, to take on.

As Chief People Officer, Lisa Craven focuses on every aspect of the people of Sizmek, including discovering and fostering talent, nurturing learning and development, and ensuring diversity and inclusion. In addition to her work as an executive coach, author, and wellness expert, at Xaxis, Lisa was Vice President, Global Human Resources, where she was recognized as a global top performer for increasing employee engagement and reducing employee turnover, and for the company achieving the Crain’s Best Place to Work in NYC award.

Paul Wright’s experience as a corporate leader, technology lead, client, agency person, strategist, consultant, entrepreneur, and board advisor brings a uniquely rounded approach to the Sizmek leadership team. Prior to joining, Paul held a wide range of roles, including CEO of iotec, a demand-side platform, Director of EMEIA and APAC iAd, Apple’s digital advertising platform, and Chief Digital Officer at Omnicom Media Group, UK. Paul was also recently shortlisted for Diversity Leader of the Year by Information Age and is a trained mentor.

Partnerships, strategic planning, and innovation—Peter Hunter bases everything he does around these objectives in his role as Sizmek General Manager, APAC. Prior to Sizmek, Peter expanded Eyeota’s product line and capabilities for ANZ as General Manager, and held senior roles at Quantcast, PHD, Inlink Media, and Dentsu Aegis’s iProspect. Raised on a farm in New Zealand where he rode a horse to school each day, Peter traded in his saddle for a steering wheel, which he uses to compete in the Sim Racing world.

As Chief Product Officer, Volker Hatz oversees Sizmek’s fast-growing data business, including data governance solutions and analytics initiatives, and product marketing. Prior to joining Sizmek, Volker was Global Head of SAP XM DMP Solution at SAP Exchange Media. Throughout his career, he’s played key roles in creating groundbreaking technology to bring structure to the stores of data that digital advertising has uncovered, including the first demand-side advertising platform, the first second-party data management platform, and the first real-time cookie-less targeting.

As Chief Technology Officer, Markus Plattner leads innovation creation and manages Sizmek’s product engineering and IT teams. With more than 25 years of experience in designing, implementing, and operating highly scalable software solutions, Markus specializes in data management and advertising platforms, which has led him to play instrumental roles in building world-class solutions at GroupM, Xaxis, Quisma, and Eyewonder.

George Pappachen is General Counsel for Sizmek. During his 20-plus years in practice, George has managed a full range of business and legal matters including corporate development, strategic partnerships, complex transactions, compliance, litigation, and data privacy. George has testified before the U.S. Congress, European Commission, and Federal Trade Commission on consumer data and commercial applications. In 2009, George was appointed Chief Privacy Officer of Kantar, a first for the organization and the industry.