EMD Serono, USA
Merck KGaA, Darmstadt, Germany
Merck KGaA, Darmstadt, Germany

Leadership Team

GARY ZIEZIULA

Gary Zieziula
President and Managing Director

ZHEN SU

Zhen Su
Chief Medical Officer for North America

LISA WALSH

Lisa Walsh
Regional Controller

BRIAN BARRY

Brian Barry
Chief Compliance Officer

LISA BUFFINGTON

Lisa Buffington
Vice President of US Communications

TIM GOLDEN

Tim Golden
Vice President, Business Excellence

JOHN HUYCKE

John Huycke
Vice President, Strategy & Management Process

MICHAEL MACDOUGALL

Michael MacDougall
Vice President and General Counsel

CRAIG MILLIAN

Craig Millian
Senior Vice President, Neurology and Immunology

WENDY SUSSMAN

Wendy Sussman
Vice President of U.S. Healthcare Government & Public Affairs

DAVID TREXLER

David Trexler
Senior Vice President, Oncology

ROBERT TRUCKENMILLER

Robert Truckenmiller
Senior Vice President, Market Access & Customer Solutions