Andy Polansky, president of Weber Shandwick since 2004, has been promoted to the CEO spot. He succeeds Harris Diamond, who moves to chair Interpublic’s flagship McCann Worldgroup ad network.

Interpublic CEO Michael Roth called Polansky a “key driver” in Weber Shandwick’s success, a valued strategic counselor and “someone who creates a great work environment for the firm’s people.”

Polansky, who did a two-year stint as chairman of the Council of PR Firms, said he looks forward to continue partnering with Weber Shandwick chairman Jack Leslie.

He told O’Dwyer’s it’s a “privilege” to take Weber Shandwick’s top spot. His goals are to expand the firm’s footprint, foster its collaborative culture to serve clients, and keep the double-digit growth rate on track.

Diamond, who also held the CEO position of IPG’s constituency management group, succeeds Nick Brien at McCann.

He joins a newly created office of the chairman with Luca Lindner (president of Middle East/Africa/Americas) and Gustavo Martinez (president of Asia-Pacific/Europe).