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ATCC leaders champion science 

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, headshot.

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

Greg Ballish

Chief Commercial Officer

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


Ruth Cheng, headshot.

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, Chief Strategy Realization Officer (SRO)

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.


Dan Kelly, headshot.

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 Laverty, headshot

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, headshot.

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, headshot.

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.