Our Leadership

U.S. Executive Leadership Team

Christopher Posner, President and CEO, LEO Pharma Inc. 

Christopher Posner, President and CEO, LEO Pharma Inc.
Christopher Posner is LEO Pharma’s Executive Vice President of Region U.S. and President and CEO of LEO Pharma Inc., the U.S. affiliate. Chris joined LEO Pharma from R-Pharm U.S., a specialty pharmaceutical start-up focused on oncology and chronic immune diseases, where he was Head of Worldwide Commercial Operations. Chris has extensive experience in the healthcare industry including biologic medicines as well as immunology, and he led the commercialization of national and global brands at Bristol-Myers Squibb, Pfizer, Wyeth, Endo Pharmaceuticals and Merck. Before joining the pharmaceutical industry, Chris was a senior economic consultant at Wharton Econometric Forecasting Associates. Chris earned his MBA from Fuqua School of Business, Duke University, and his Bachelor of Arts degree in economics from Villanova University.


Keith Bernius, CFO and VP, Business Operations 

Keith Bernius, CFO and VP, Business Operations Keith Bernius is LEO Pharma Inc.’s Chief Financial Officer and Vice President of Business Operations. Prior to joining LEO Pharma, Keith was the Vice President of Finance and Treasurer of Altegrity Inc., where he was responsible for global treasury, investor relations, risk management, enterprise FP&A and real estate. Prior to Altegrity, he worked at Alpharma Pharmaceuticals for seven years in both corporate finance and divisional roles with his last position as Vice President, Finance and Pharmaceuticals CFO. Keith holds a Bachelor of Science degree in accounting from Manhattan College and is a Certified Public Accountant.

Gary Branch, VP, Sales

Gary Branch, VP, SalesGary Branch is LEO Pharma Inc.’s Vice President of Sales. Gary has more than 25 years of commercial experience in the pharmaceutical industry. Most recently, Gary served as the Vice President of Sales at Lexicon Pharmaceuticals, a start-up biopharma company, where he built the sales and sales support organization in preparation for the company’s first commercial launch. Prior to joining Lexicon, Gary spent many years at both Novartis and GlaxoSmithKline, where he held commercial positions of increasing responsibility in marketing, sales and managed care. Gary has deep breadth and depth in oncology and general medicines. He has worked in multiple countries and at the global level. Gary received his MBA from the University of Michigan Business School and his Bachelor of Science degree in engineering from the United States Military Academy at West Point.

Tiffany L. Christian, VP, Legal and Compliance

Tiffany L. Christian, Head of U.S. Legal and ComplianceTiffany L. Christian, Esq., is LEO Pharma Inc.’s Vice President of U.S. Legal and Compliance. Tiffany has over 15 years of experience in the pharmaceutical industry, supporting clients both as external and in-house counsel. Prior to joining LEO Pharma, Tiffany was Corporate Counsel at Warner Chilcott, where she provided general counsel and advice, with a focus on the advertising and promotion of pharmaceutical products. Prior to Warner Chilcott, Tiffany was a commercial litigation associate at DLA Piper, where she concentrated on product liability litigation and represented some of the largest pharmaceutical companies in the industry. Before DLA Piper, she was a litigation associate at Sills Cummis & Gross P.C. Tiffany holds a Juris Doctor from Georgetown University Law Center and a Bachelor of Arts degree from Cornell University.


Adriana Guana, VP, Medical Strategy & Scientific Affairs 

Adriana Guana, VP, Medical Strategy & Scientific Affairs Adriana Guana, M.D., is Vice President of Medical Strategy & Scientific Affairs, and has a lead role in defining and driving the Medical and Scientific Affairs strategies in the U.S., as well as managing  Pharmacovigilance, Medical Information, Scientific Affairs and Field Medical. Adriana is a dermatologist, with more than 14 years of experience including phase III and phase IV clinical trials, pharmacovigilance and Medical Affairs-related activities, in the U.S. and globally. Adriana’s experience includes at Novartis, where she most recently served as Worldwide Lead Medical Affairs Director, Immunology and Dermatology. Prior to Novartis, Adriana held several roles of increasing responsibility at Sanofi. Adriana earned her M.D. degree from Pontificia Universidad Javeriana and completed her dermatology specialization at the Universidad Militar Nueva Granada, both in Colombia, with practice rotations at Baylor College of Medicine, the University of Texas and the University of Pittsburgh Medical School.

Brian Mulnix, VP, Marketing

Brian Mulnix, VP, MarketingBrian Mulnix is LEO Pharma Inc.’s Vice President of Marketing. Prior to joining LEO Pharma, Brian was Head of Strategy and Business Development at Sun Pharmaceutical Industries where he negotiated pharmaceutical in-licensing and commercialization partnerships for U.S. and global markets. Previous to Sun, Brian was Vice President U.S. Marketing at Galderma. Brian was also the Xeljanz Commercial Team Leader, Enbrel Global Asset Leader and Enbrel U.S. Marketing Team Lead positions at Pfizer. Prior to Pfizer, Brian held global and regional roles at Endo Pharmaceuticals and Merck. Brian received his MBA from the University of Michigan Ross School of Business and his Bachelor of Science degree in applied economics from the University of Minnesota.

John Tomasello, VP and Head, Human Resources and Communications

John Tomasello, VP and Head, Human Resources and CommunicationsJohn Tomasello is LEO Pharma Inc’s Vice President and Head of Human Resources and Communications. John is an HR executive with more than 20 years of multinational human resources experience, including more than 15 years within the healthcare industry. Prior to joining LEO Pharma, John was Vice President, Human Resources, at Mallinckrodt Pharmaceuticals where he was responsible for the company’s international, multibillion dollar specialty biopharmaceuticals portfolio (rare disease and hospital). Prior to Mallinckrodt, John held global, and U.S. HR leadership roles at Baxter International, The Valspar Corporation and Novartis. John holds a Master of Science degree in human resources and a Bachelor of Science degree in marketing from Rutgers University.

Domenic Verroca, VP, Patient Market Access and Public Affairs 

Domenic Verroca, VP, Patient Market Access and Public Affairs Domenic Verroca, Ph.D., is LEO Pharma Inc.’s Vice President of Market Access and Public Affairs. Domenic joined LEO Pharma after serving as Vice President of Market Access at Galderma. Prior to Galderma, Domenic worked at Sanofi for over 11 years in positions of increasing responsibility. His last position at Sanofi was as Vice President of U.S. Market Access, which he held for more than six years. Prior to Galderma, he worked for Pharmacia and Johnson & Johnson Health Care Systems Inc. Domenic holds a Bachelor of Arts degree in economics and geography from Coventry University in England, a Master of Arts degree in international affairs from Drew University and a Ph.D. in management from the University of Pittsburgh.

Global Leaders Based in U.S. 

John Bujnoski, VP, Global Marketing Eczema

John Bujnoski, VP, Global Marketing EczemaJohn Bujnoski is LEO Pharma’s Vice President of Global Marketing for the eczema portfolio. John has more than 25 years of global commercial experience and has led product teams that drive business results in the U.S. and globally. His experience includes senior level assignments in global organizations including Sandoz, Pfizer, Wyeth Pharmaceuticals and Merck. In addition to extensive U.S. experience, he has lived and worked in Italy and Germany. John holds an MBA from Florida State University and a Bachelor of Science degree in finance from the University of Florida.


Antonella Lozito-Heerschap, VP and Head, Global Regulatory Strategy

Antonella Lozito-Heerschap, VP and Head Global Regulatory StrategyAntonella Lozito-Heerschap, PharmD, is Vice President and Head, Global Regulatory Strategy. Antonella has over 15 years of experience in the pharmaceutical industry, serving in regional and global roles within global regulatory affairs. Prior to joining LEO Pharma, Antonella worked for nearly 9 years at Sanofi in positions of increasing responsibility across several business units, including specialty care (immunology and inflammation, neurology and rare blood disorders) at Sanofi Genzyme. Before Sanofi, Antonella worked for nearly 7 years at Hoffmann-La Roche as the regional regulatory lead for marketed products and investigational therapies in oncology, diabetes, cardiovascular and psychiatry. A pharmacist by training, Antonella holds a PharmD from St. John’s University and completed a post-doctoral Industrial Pharmaceutical Fellowship at Hoffmann-La Roche in conjunction with Rutgers University.

Judit H. Nyirady, VP, Global Medical Affairs 

Judit H. Nyirady, VP, Global Medical Affairs Judit H. Nyirady, M.D., is Vice President, Global Medical Affairs, and was most recently LEO Pharma Inc’s Vice President of Medical Strategy & Scientific Affairs. Judit has more than 20 years of pharmaceutical experience. Prior to joining LEO Pharma, Judit was the interim Medical Unit Head of Dermatology and Immunology at Novartis Pharmaceuticals Corporation. Additionally, she served as the Executive Director of U.S. Clinical Development and Medical Affairs and was the former Global Brand Medical Director of Dermatology. Prior to joining Novartis, Judit worked at Ortho Dermatological Johnson & Johnson Consumer Products Worldwide in Medical Affairs, Dermatology. She is a dermatologist, holds a MBA from Cornell University, Johnson Graduate School of Management, and obtained her medical diploma in Hungary from Albert Szent-Györgyi Medical University. Judit also serves as an Adjunct Assistant Professor in Dermatology at Rutgers University in Newark, N.J.

Manan Shah, VP & Head, Global Public AffairsManan Shah, VP & Head, Global Public Affairs

Manan Shah is Vice President & Head, Global Public Affairs, at LEO Pharma.  Most recently prior to this role, Manan served as head of the U.S. Public Affairs and Advocacy function.  He has nearly 15 years of experience in the life sciences industry. Before joining LEO Pharma, Manan worked at Biogen Inc. in their global public affairs team focusing on multiple sclerosis. Additionally, he worked for nearly 10 years at Novo Nordisk, in various roles ranging from state advocacy in the U.S. to running public affairs for the international operations region in emerging markets across the globe, based in Zurich, Switzerland.  Manan earned his Master in Public Affairs & Politics from Rutgers University and an MBA from the University of Illinois. Manan also serves as an member of the core team developing the curriculum and courses for Fairleigh Dickinson University’s new Master in Public Health program and is an adjunct instructor for its Public Health Management & Policy course.

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LEO Pharma A/S Global Leadership Team and Board of Directors