Sean Mahoney was named vice president, editorial director at sparks & honey.

Neustar tapped Chris McArdle as vice president of marketing services.

WWE promoted Brian Flinn to executive vice president, marketing & communications and Rajan Mehta to executive vice president & chief technology officer.

Finn Partners has acquired Horn Group. Sabrina Horn, president and CEO of Horn Group, will be managing partner, U.S. technology practice leader for Finn Partners.

Altitude Digital named Perry Quinn as senior vice president of platform sales.

Full-service digital shop IMM continues to expand its technical leadership and practice by naming Keith Pieper to the newly created role of vice president, technology. In this role, he is responsible for leading efforts across a variety of technical initiatives including programmatic, cross-device attribution, viewability, ad blocking, tracking and privacy. He reports to Ken O'Brien, senior vice president, applied sciences and technology. He is based in Boulder, CO and currently works horizontally across all departments and clients. He'll be hiring a team in the near future. Pieper joins IMM from video advertising platform SpotXchange, where he served as director of product management. …

Ashleigh Young joined 360i as vice president of new business, charged with leading new business efforts across the agency's North America offices. Most recently, Young worked at Avon as executive director, head of global advertising & media and prior to that was senior vice president, account director at Leo Burnett NY. She has also held various leadership roles at Ogilvy & Mather, Saatchi & Saatchi, iris Worldwide and Grey.

Jonathan "JB" Byrne joined Heat team as creative director. Byrne joins the agency from DDB California, where he served as creative director. At Heat, Byrne will work on clients like Kendall-Jackson wines and Esurance and will also be taking the creative lead on new business endeavors this fall. "JB is an advertising veteran who can shape and protect the big ideas while not being afraid of innovation and new mediums," said Steve Stone, executive creative director and founder of Heat. "He puts in work, inspires, and is a team player. We're really excited he's joined us here at Heat." In …

CP+B Boulder promoted Matt Talbot to vice president, executive creative director. Talbot will continue to focus on the Domino's account and also oversee creative leadership of the Hotels.com account, reporting to Ralph Watson, vice president/chief creative officer, CP+B Boulder. Talbot joined CP+B in 2009 as a copywriter on the Domino's account. During his tenure at the agency, Talbot was creative director on the Hotels.com pitch, which won the business for CP+B and introduced brand spokesperson Captain Obvious. For Domino's, Talbot has led the creative on all U.S. work. His work on the creation of emoji ordering for Domino's earlier this …

The VIA Agency promoted Leeann Leahy to chief executive officer. Leahy joined the agency in December 2012 as president. She succeeds John Coleman, who has served as CEO since founding The VIA Agency in 1993 and who will now serve as chairman. During her tenure, the agency has experienced year-over-year revenue growth and added several recognized brands to its roster, including Facebook, Heinz, Marriott Autograph Series, Pacific Life, TD Ameritrade, Elite Airways, Golden Corral and Proximo Spirits. "We hired Leeann away from Madison Avenue and New York City because she had a vision into what brands are looking for and …