Heat San Francisco hired Nathan Shamban as account manager on the agency's EA Sports business.

Phil Cowdell was promoted to chairman of Mindshare North America, a new position. Cowdell, who has served as Mindshare North America's CEO since May 2009, will be succeeded by Antony Young, who most recently was CEO of Optimedia in the U.S.

Optimedia promoted Dave Ehlers to president, Optimedia US, succeeding Antony Young.

SolutionSet launched a Relationship Marketing Group, which will be helmed by Mark Yesayian, who joins the agency as president of relationship marketing.

Bryce Townsend was named CEO of GroupM Entertainment & Sports Partnerships, the entertainment and sports consultancy unit of GroupM.

Kien Hoe joined TBWA/Shanghai as group creative director. In addition, Dwayne Koh joined TEQUILA/Shanghai as group creative director.

SAY: Media promoted John Irvine to Detroit sales manager and hired Paige Grosvenor as account executive.

Jonathan Hoffman joined Starcom USA as chief experience officer, a new position.

Euro RSCG Chicago promoted Michael Shirley to group creative director for digital initiatives.

DDB Worldwide has hired Peter McGuinness as DDB Chicago's president & CEO. Previously, McGuinness was chairman & CEO of Gotham.