Stephen Ensley

Hellman & Friedman LLC (Hellman & Friedman) is a private equity firm founded in 1984 by Warren Hellman and Tully Friedman. The firm is headquartered in San Francisco, California.

Pharmaceutical Product Development LLC engages in the operation of a global contract research organization, which provides drug development, laboratory and lifecycle management services. It offers adaptive trial design, bio analytical lab, bio similar development, biostatistics, GMP lab, clinical supplies, trial monitoring, CMC regulatory, data management, dental pain clinic, real-world outcomes, site intelligence and activation, central lab, global regulatory affairs, IRT systems, late stage research, medical communications, device and diagnostics, medical writing, nonclinical development and regulatory consulting and intelligence, regulatory development, innovation and vaccine sciences. The company was founded by Fredric N. Eshelman in 1985 and is headquartered in Wilmington, NC.

X-Co Holdings LP provides biotechnology services. The company is headquartered in Wilmington, NC.

PPD, Inc. engages in the provision of drug development services to the biopharmaceutical industry, focuses on helping customers bring their new medicines to patients around the world. It operates through the Clinical Development Services and Laboratory Services segments. The Clinical Development Services segment focuses in early development/Phase I, patient recruitment and enrollment, investigator site management, Phase II-IV clinical trial management, medical communications and various peri- and post-approval services. The Laboratory Services segment comprises of bioanalytical, vaccine sciences, GMP, central lab and biomarker testing. The company was founded by Fred Eshelma in 1985 and is headquartered in Wilmington, NC.

Sheridan Healthcare, Inc. provides medical and healthcare solutions for anesthesiology and other specialties to physicians, hospitals and outpatient centers. It specializes in anesthesia, radiology, emergency medicine, neonatology, and other pediatric subspecialties services. The firm also provides support, training, and management services in non-clinical areas. The company was founded in 1953 and is headquartered in Sunrise, FL.

CARFAX Canada ULC provides vehicle information and history reports services. It is a tool used by clients in buying or selling used cars. The company was founded by Paul Antony, Holden J. Rhodes, Bill Luther and Joe Luther in 2000 and is headquartered in London, Canada.

Checkmarx, Inc. engages in the provision of application security services. The company is headquartered in Dover, DE.

Checkmarx Ltd. develops application security testing software solutions. It specializes in Source Code Analysis (SCA) solutions designed for identifying, tracking, and fixing technical and logical security flaws from the source code. The company was founded by Maty Siman in 2006 and is headquartered in Tel Aviv, Israel.