Executive Management Team

Robert J. Rosenthal, PhD

Chief Executive Officer (CEO)

Nancy Sandy


Todd Little

Corporate Development

John DelliSanti

Senior Vice President, Sales and Customer Service

Patrick Laverty, PhD

Senior Vice President, Operations

David Lester

Senior Vice President, Human Resources and Organization Development

Michael Mullen

Senior Vice President, Strategic Projects, and Chief Financial Officer

John Couse, PhD

Vice President, Scientific Services

Donna Gulezian

Vice President, Portfolio Innovation & Development

Stephanie Hartman

Vice President, Quality Assurance

Jeffrey Lohmiller, DVM, MS, DACLAM

Vice President, Animal Welfare and Compliance

Nicholas Mitropoulos

Vice President, Financial Planning and Strategic Alliances


Gretchen A. Rice, PhD, JD

Vice President and General Counsel

Michael Seiler, PhD

Vice President, Commercial Products