AppNexus Announces Executive Appointments in EMEA

Commercial structure reflects momentum and fortifies collaboration across core regions

London – AppNexus, the world’s leading independent advertising technology company, announced a round of executive appointments, including Jerome Underhill to Senior Vice President, EMEA; Nigel Gilbert to Chief Market Strategist, EMEA; Kathryn Schlieben to Vice President, EMEA Commercial Development; and Julia Shullman to Chief Privacy Counsel. Melissa Roberts joins the company as Head of Video Market Development, EMEA.

“We have reached a critical juncture in the evolution of the internet in Europe, and AppNexus is fully committed to helping our clients be ready,” said Michael Rubenstein, President, AppNexus. “Jerome Underhill, Nigel Gilbert, and Kathryn Schlieben are seasoned executives, proven in strategically guiding clients through industry disruption to seize new opportunities. As the market adapts to meet the regulations, I am confident we have outstanding people overseeing our solutions locally.”

As SVP, EMEA, Jerome Underhill is responsible for commercial teams in the region, ensuring a strong link between all EMEA regions and AppNexus’ headquarters in New York City. He supports the empowerment and growth of the company’s regional go-to-market teams, as well as collaboration between EMEA markets. Jerome joined AppNexus in 2013, leading the Services group and operations in EMEA. He continues to report to Michael Rubenstein.

In his role as Chief Market Strategist, EMEA, Nigel Gilbert will continue connecting AppNexus at an industry and market level in EMEA, including developing and executing key strategic initiatives in-region. Nigel joined AppNexus in 2011, leading strategic development across EMEA. He continues to report to Michael Rubenstein.

As VP, EMEA Commercial Development, Kathryn Schlieben is responsible for the rollout of go-to-market initiatives across EMEA, commercial best practices in sales strategy and account planning, and the evolution of the commercial operating environment and culture that supports the company’s EMEA teams. She joined AppNexus in 2012 and has held several commercial leadership roles, most recently Publisher Account Management in Northern Europe. Kathryn continues to report to Jerome Underhill.

Melissa Roberts joins AppNexus as Head of Video Market Development, EMEA. Prior, she held commercial leadership roles at Freewheel, which she joined in 2008. In her position with AppNexus, Melissa is responsible for developing and implementing video strategies and competencies with teams across EMEA. She reports to Jerome Underhill.

Continued Rubenstein, “AppNexus is thrilled to welcome Melissa Roberts to the team, as increasing consumer interest in multi-screen video presents new opportunities and challenges for advertisers and publishers. Melissa brings a wealth of expertise in this innovative and exciting space, and will support AppNexus’ continued rise as the go-to advertising technology company for video monetisation.”

As Chief Privacy Counsel, Julia Shullman oversees AppNexus’ global privacy work, advising all internal teams on the development of policies, products, and partnerships in compliance with global data protection laws and industry self-regulation and best practices. She represents AppNexus as a member of the Board of the Network Advertising Initiative and in various IAB working groups, including as Chair of the Steering Group for the IAB Europe Transparency and Consent Framework. Julia joined AppNexus in 2014 as the lead attorney for AppNexus’ engagement on strategic sell-side commercial and product initiatives. She continues to report to Nithya Das, Chief People and Legal Officer.

AppNexus employs close to 1,000 people in 27 offices globally.

AppNexus is an internet technology company that enables and optimizes the real-time sale and purchase of digital advertising. Our powerful, real-time decisioning platform supports core products that enable publishers to maximize yield; and marketers and agencies to harness data and machine learning to deliver intelligent and customized campaigns. For more information, follow us at @AppNexus or visit us at