Hasta La Creative!

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 ABCNews.com, 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.

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