Red Peak Group hired Paul Kingsley as chief operating officer.

Catalyst S+F hired Tim Hanlon, former executive vice president/managing director of VivaKi Ventures, as a partner responsible for the firm's venture investment and advisory strategies.

Momentum Worldwide hired Dax Callner as a vice president on its global innovation team. Callner joins from Jack Morton Worldwide, where he served as senior vice president of strategy & planning.

Jennifer Mollo, who had been serving as vice president, group account director at T3, has been promoted to senior vice president, director of client services.

Euro RSCG Worldwide named Stacy Mackler executive vice president and chief marketing officer. She was previously vice president of global communications for Clinique.

Troy Hitch joined Barefoot Proximity as vice president/creative director. Hitch will serve on the firm's executive leadership team and oversee the development of a branded entertainment practice.

Marita Scarfi has been appointed chief executive officer of Organic. Scarfi previously served as the executive vice president and chief operating officer of the Omnicom network agency.

La Comunidad expanded its strategic planning capabilities to include Media Services and Connections Planning, and hired David Lawlor to head the new division as director of media services and connections planning.

Night Agency hired Jill Meisner as director of communications.

Zander Lurie has been named senior vice president of strategic development, CBS Corporation.