Camp + King San Francisco hired Kristin Johansen as social media manager, a new position, and Michael Ng as senior copywriter. Johansen began her career working in analytics at WCG, where her clients included P&G and Verizon. She moved on to FleishmanHillard, served as the lead research analyst for L'Oreal and also spent time freelancing in Brooklyn and the Caribbean. Ng moved to New York after graduating from VCU Brandcenter and began freelancing at Wieden + Kennedy and Johannes Leonardo. Eventually, he settled in at The&Partnership (formerly CHI & Partners), where he worked on TELUS, Direct Energy, WSJ and Bulleit.

Havas London named Xav Rees as CEO, reporting to Chris Hirst, European and UK group CEO. Rees joins the agency from adam&eveDDB, where he served as group managing director, a role he held for the last two years. While there, Rees helped oversee the merger of DDB and adam&eve, and was the only member of the original DDB leadership to earn a place on the new management team following said merger. Alongside his group managerial duties, Rees ran the agency's Diageo and Volkswagen accounts. "Xav is a true powerhouse who can energize and propel an agency forward," said Hirst. "As …

Gyro UK hired Fran Caplan as marketing director, a new position. Most recently, Caplan spent three years as marketing director at krow. Prior to that, she was at St Luke's, Brothers & Sisters and McCann London as a new business consultant. "As a B2B agency, we are rather unique in the marketplace and needed someone that understands that and also shares our culture and values," said Kate Howe, managing director. "Fran will be a breath of fresh air to the agency and will help us in our ambition to unravel this new world of communication and technology. With her on …

Johannes Leonardo hired Bryan Yasko as president, reporting to co-founders and chief creative officers, Jan Jacobs and Leo Premutico. Yasko joins the agency from Droga5, where he was global business director and a member of the executive management team. While there, he repositioned the Prudential brand with the "Day One" and "Challenge Lab" campaigns, which earned numerous awards, including Gold and Titanium Integrated Lions at Cannes and TED's Ads Worth Spreading prize for innovation, ingenuity, and intelligence in advertising. He also led accounts and new business wins for Google, Motorola and Chase. Prior to Droga5, Yasko served as senior vice …

MDC Partners hired Stephanie Nerlich as chief marketing officer, managing director, in Canada, beginning in April. She will oversee marketing and business development across all MDC Partners agencies in Canada and report to Bob Kantor, chief marketing and business development officer, and Andre Coste, executive vice president and chief operating officer. Nerlich joins the agency from Grey Canada, where she was president and CEO for five years. While there, she led a national network of agencies, expanded Grey Canada's digital capabilities and drove new business growth, winning Post Foods USA, HSBC North America, Procter & Gamble, Brown Forman, ATCO and …

Fernando Sanchez Servitje joined Legion Advertising as partner and director.

Meredith Digital named David Sarthou as executive director of campaign strategy & insights; Selena LoRusso as director of sales development and strategy; and Kristen LoGrasso and Anastasia Cohen as sales managers.

Umbel tapped Lisa Pearson as the company's first president.

Cayan named Chris Menard as chief financial officer.

PubMatic named Paul Gubbins as UK country manager. Most recently, he was the head of programmatic at Millennial Media.