CROFounded 1982
Parexel
Raleigh, North Carolina, United States
Full-service CRO providing clinical trial management across all phases, plus regulatory and biostatistics consulting, for biopharmaceutical clients.
- Segment
- CRO
- Headquarters
- Raleigh, North Carolina, United States
- Founded
- 1982
- Website
- www.parexel.com
Notable facts
- Founded in 1982 by Josef von Rickenbach and organic chemist Anne B. Sayigh; the company name references 16th-century scientist Paracelsus.
- Taken private in November 2021 by EQT Private Equity and Goldman Sachs Asset Management for about $8.5 billion.
- Relocated its global headquarters from Newton, Massachusetts to Raleigh, North Carolina around 2025.
- Operates 84+ facilities across 49 countries with roughly 24,000 employees as of 2025, and entered a 2024 collaboration with Palantir Technologies on AI-driven clinical trial data management.
Sourcing guides
Sources. This profile is compiled from public reference data, WebSearch-verified against source 1 · source 2. Data as of 2026-07-14. See methodology.
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