Miller joins the agency from Jack Morton Worldwide, where he served as director of business development. Prior to that, he was the business development manager, sports & sponsorship marketing at George P Johnson Experience Marketing, where he worked with brands including Pepsi, Under Armour and Cisco.

During her 20-year agency career, Koepsell has created marketing strategies for a variety of brands including American Family Insurance, Target, Ecolab, Thomson Reuters and Johnson & Johnson.

"Julie is a relationship builder. Whether she is hiring and growing leaders, or making new connections between staff members and clients, Julie is consistently working to elevate the Mirum brand and business," said Zincke. "We are excited for her to bring these talents to expanding the success of the U.S. leadership team and the Minneapolis office."

"Data is an increasingly critical part of the value MEC creates for its clients. Our promise is in our ability to deliver data-driven solutions backed by genuine audience insights to build brands," said Marla Kaplowitz, CEO of MEC North America. "Karima is the right kind of leader to drive forward our vision. Her rich agency background and deep knowledge of the data and digital ecosystem will help cultivate a new generation of data scientists that can connect offline and online data to maximize performance at all touch points."

Most recently, she was vice president of corporate strategy & partnerships for Human Movement, a division of POWDR Corporation. While there, Holtz drove brand sponsorship and events within POWDR resorts and worked with brands such as Under Armour, Gatorade and Go-Pro.

Prior to that, she spent more than 10 years as Oakley’s global sports marketing manager, responsible for launching key product and branding opportunities and strategically aligning them to influencer athletes and events.

"I love the way Liesl thinks," said Howard Rubin, managing partner at Match Marketing Group. "'Uniquely' is the perfect brand-integration piece—it positioned Oakley on a global journey with these great surfers, skateboarders, snowboarders and other female athletes as they search for perfect conditions and bond as friends. There was no hard sell, just a natural fit for the brand, and that’s what MMG aims to do with all the lifestyle brands we work with."

Hurrell first joined MullenLowe in 2012 as head of account management before rising to become managing director at the end of 2015. During her time there, she contributed to refocusing the agency on its creative output and the importance of stronger and more diverse talent and more collaborative behaviors. She led client accounts including government business, The Electoral Commission and NHS Blood and Transplant, and The British Heart Foundation, which MullenLowe won from Grey.

She has also spent time at glue Isobar, Saatchi & Saatchi, RKCR/Y&R and Fallon.

Based in New York, he will report to Henry Tajer, global CEO, and Chris Loll, chief operating officer, NA, IPG Mediabrands.

Ringel's 20-year career has spanned Europe, North America and the Pacific. In 1999, he established metapeople Group. After selling metapeople Group to Netbooster Group in 2011, he assumed the role of CEO at Netbooster Group, overseeing more than 500 employees around the world.

"Over the last year, our network has invested heavily in building best-in-class products, recruiting top talent and expanding the global footprint of our specialty business units," said Tajer. "In hiring Tim, we are continuing this trend of building stronger, more innovative and dynamic business units to support and partner with our clients and our network."

"Reprise is widely considered one of the premier search agencies in the business," said Ringel. "To lead IPG Mediabrands' search and digital evolution as well as Reprise's global expansion is an opportunity I couldn't pass up."

Sileo began her career at Deutsch NY, launching IKEA in the US. She then worked in California at Hal Riney & Partners, where she spent nearly a decade working on brands like GM's Saturn, GM EV1 and Sprint PCS.

"Michele has been a driving force at Eleven since she arrived twelve years ago," said Courtney Buechert, CEO of Eleven. "She is the face of the agency with new client relationships and has helped propel us into a new era of growth. And her natural strength has made her a pillar for our culture–always leading with urgency, commitment, and a gift for pulling us all together. Her elevation as a Partner is well earned, and I'm grateful we're together in all this."

Most recently, Dressler was director of technology at MMB in Boston. He was responsible for end-to-end technology and data programs across numerous clients, including Toyota, Subway Restaurants, Foster Grant, Boston Children's Hospital, EMC and UNICEF.

Prior to MMB, Dressler held leadership roles at ZAAZ, Nordstrom.com and GreenRubino.

"At Proximity, we use data-driven creativity to solve complex business problems for our clients. Technical expertise is a pervasive thread throughout our process," said Franklin. "Chris has deep experience, a proven track record of building capability and a vision for advancing our unique agency perspective. We look forward to his leadership."