Andy Singer joined Alkemy X as executive vice president of television and digital programming.

Los York added Erin Endres as group account director.

CDAS is expanding its litigation, entertainment, and intellectual property practice and hired Lindsay W. Bowen as a partner.

Idea Hall named Anita Mellon as group director, public relations, a new position at the company.

Margo Georgiadis, president of Americas at Google, has been named chair of The Ad Council's board of directors. She succeeds David Christopher, chief marketing officer of AT&T Mobility.

Adform named Sukesh Singh as vice president of Southeast Asia.

Kargo named Greg Cappello as vice president of product marketing.

MP&A Digital & Advertising added Erica Hammett as a public relations account executive.

Workfront named Alex Shootman as president and CEO.

AnyClip named Jason Cesare as vice president of sales, North America and Adam Hopkinson as managing director, Europe.