Transforming great ideas into incredible breakthroughs requires an unwavering commitment to upholding the integrity and veracity of sound science. As such, our leadership team ensures compliance with ethical, regulatory, and quality best practices.
ATCC Executive Leadership Team

Raymond H. Cypess, DVM, PhD
Chairman, CEO
Dr. Cypess oversees ATCC and ATCC Global to ensure its long-term viability, continued growth, and ongoing contributions to the progression of credible science.

Greg Ballish
Chief Commercial Officer
Greg leads ATCC’s sales and marketing operations and helps oversee the corporate business and commercial center.

Ruth Cheng, PhD
Chief Innovation and Strategy Officer & Vice President of Corporate Development
Ruth leads corporate strategy, strategic partnerships, and internal and external innovation efforts.

Robert Gowin, MBA
Chief Strategy Realization Officer
Robert leads the effort to ensure that ATCC’s strategic plans, capabilities, and organizational design are aligned and executed across the company.

Daniel Kelly
Chief Information Technology Officer
Dan oversees digital strategies that advance ATCC’s mission and extend its reach into new technology-based business opportunities.

Patrick J. Laverty, PhD
Vice President, Quality, Safety, and Product Compliance
Patrick leads ATCC’s compliance-focused teams, with emphasis on functional integration, strategic alignment, support of new product and growth initiatives, and compliance of regulatory needs and business process improvement.

Joseph Leonelli, PhD
Senior Vice President, ATCC Federal Solutions (AFS)
Joe manages programs that provide products and services to help government address emerging infectious disease, biodefense, medical countermeasures, and global health security.

Teri Sellars, SPHR, SHRM-SCP
Vice President, Human Resources, and Chief People Officer
Teri manages ATCC talent acquisition, talent data management, development, human resource regulatory compliance, and leadership development.