GSD&M hired Marianne Newton and Sara Cherry as executive producers. Newton will lead production efforts on the agency's Southwest Airlines account and Cherry will lead all production efforts on the agency's Walgreens account.

Root3 Growth Marketing hired Jason Abrahams as vice president of marketing.

MEC hired Kat So as managing partner to serve as agency lead on the Citi Enterprise Global business. She will report to Rick Acampora, president of client services & business development, MEC North America. So brings more than 18 years of industry experience, working with clients like Jaguar, Land Rover, Toys R Us, Kimberly Clark and Beiersdorf. In her new role, So will lead the execution of Citi's brand strategy across the globe, delivering solutions that connect data, planning and digital. Prior to MEC, So was client leader in MindShare's Sydney office, where she drove strategic integration and alignment across …

CP+B LA named Kevin Jones as executive creative director. Jones will lead the creative department on all CP+B LA accounts including Charles Schwab, NBA2K, Applebee's, A.1 Sauce and Grey Poupon among others. Jones replaces Sue Anderson, who left to pursue other creative endeavors, including working on her book. He joins the agency from Wieden+Kennedy where he has spent close to 20 years working on campaigns that have become a part of pop culture. His work won him back-to-back Emmys for the Chrysler Eminem Super Bowl spot and the P&G Olympic spot "Best Job." Jones has also created award-winning work for …

72andSunny hired Martin Ringqvist as a group creative director. Most recently, he was a copywriter and senior partner at Forsman & Bodenfors, which was named Independent Agency of the Year at Cannes, and Agency of the Year at the One Club and Art Director's Club this year. While there, Ringqvist worked as a creative on Volvo's "Epic Split," a video that starred Jean-Claude Van Damme, an Enya song and two Volvo trucks. Ringqvist also worked on the Tele2 business, Forsman & Bodenfors' largest account. He will relocate to Los Angeles and start his new position in January. "Martin's innovative body …

Sid Lee added four creatives to its New York office. Verena Michelitsch joins as design director, Cecilia Azcarate as co-creative director, Andre Gidoin as senior creative and Dana Tiel as copywriter. Michelitsch was most recently senior designer for boutique design agency RoAndCo. She moved to New York in 2011 and began freelancing for Sagmeister & Walsh and Pentagram Design, handling a variety of branding, illustration and art direction projects over the years. Azcarate joins Sid Lee from M&C Saatchi where she served as Associate creative director. Born in Spain, she has also held art director positions with NYC-based agency Johannes …

CP+B promoted Jason De Turris from vice president, executive planning director, to chief strategy officer. In his new role, De Turris will relocate from Boulder to Hong Kong to oversee global strategy on the Infiniti account. He will also focus on opening CP+B's Hong Kong office. In the near future a head of North American planning will be named who will be his counterpart in North America. At CP+B, De Turris has worked across the agency clients like Hotels.com, Grey Poupon, Best Buy and Xbox One. He has worked closely with CP+B's product innovation and brand experience designers to create …

JUICE Mobile named Rebecca Shropshire as vice president of sales for Canada.

VFX supervisors Andy Boyd, Jake Montgomery and Asher Edwards have launched JAMM, and their first job is a spot for the Super Bowl.

Gabrielle Korn has been named senior editor of NYLON.com.