People on the Move: PointRoll Names Mario Diez Chief Executive Officer

Also on the Move: Christina Van Tassell, Ned Potter, Gary Schoch, Olga Ackad and Joel Schaeffer

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Mario Diez
Mario Diez
Mario Diez has been named PointRoll's new chief executive officer. Mr. Diez has been at the center of creative, media, and measurement technologies, building sales for and leading some of the best-regarded and innovative technologies in digital media. He has previously held senior roles at The New York Times and PointRoll. He joined Centro in New York as VP-eastern sales. After Centro, as vice president for Datran Media, he launched Aperture, an analytics platform based on verified household data. This is a homecoming of sorts, as Mr. Diez opened the New York market for PointRoll in 2003, when the company was a 2-year-old startup.

WPP Digital's 24/7 Media appoints Christina Van Tassell as new chief financial officer. She will be responsible for the financial operations of 24/7Media and its two divisions, Real Media Group and Media Innovation Group. Ms. Van Tassell brings 20 years of global experience in finance, management, and private equity to the company. Prior to this position, she was the chief financial officer at Centurion holdings in New York. She also held senior roles with PricewaterhouseCoopers Transaction Services in New York and London, and PwC Global Capital Markets in Sweden. A graduate of Muhlenberg College, Ms. Van Tassell also holds a join MBA from Columbia Business School and London Business School.

Ned Potter has joined RLM Finsbury as senior vice president. Mr. Potter will play a significant role in RLM Finsbury's growing science and technology practice. He had previously served as a science correspondent for ABC's "World News" and also reported for "Nightline," "Good Morning America" and the Discovery Channel's "Discovery News." He also contributed as an editor for, expanding its digital-media footprint. Before joining ABC News, Mr. Potter was a correspondent at CBS News. He received a bachelor's degree at Princeton University, where he studied the history of science.

Rosetta has announced Gary Schoch as partner, global commerce lead. His new role will involve driving Rosetta's global commerce business development and will be based in the San Francisco office. Mr. Schoch led IBM's transformation to Smarter Commerce as an architect of the acquisitions of Sterling Commerce, Coremetrics and Unica to complete the portfolio of WebSphere Commerce. Prior to joining IBM, he was president and CEO of Business Systems Architecture Inc. He also has a bachelor's degree in Computer Science from The Catholic University of America.

Olga Ackad and Joel Schaeffer have been promoted to co-managing directors of the Long Form division for Mercury Media. In their new roles, they will be responsible for leading the growth of the Long Form division out of the agency's Santa Monica headquarters. Ms. Ackad formerly served as VP-client services in the Long Form division. In that position she closely managed client media campaigns. Mr. Schaeffer formerly served as VP-media within the division. He brings 20 years of experience in direct-response advertising.
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