Headlands Research Acquires Trial Management Associates

THL Partners Acquires Headlands Research from KKR

August 16, 2025

Healthcare Services

THL Partners entered into a definitive agreement to acquire Headlands Research, a multinational network of clinical trial sites, from funds managed by KKR. The deal is intended to accelerate Headlands’ clinical trial site expansion and enhance its technology and centralized infrastructure for pharmaceutical and biotech sponsors.

Headlands Research Acquires Eastern Massachusetts Clinical Research Site

April 18, 2023

Healthcare Services

Headlands Research acquired an established clinical research site now operating as Headlands Research Eastern Massachusetts. The site — led by neurologist Dr. Donald Marks and specializing in neurodegenerative diseases such as Alzheimer’s and Parkinson’s — broadens Headlands’ neurology research capabilities and expands its clinical trial site network in Eastern Massachusetts.

Headlands Research Acquires Peninsula Research Associates

June 30, 2022

Healthcare Services

Headlands Research, a KKR-backed clinical trial site network based in San Francisco, acquired Peninsula Research Associates (PRA) of Rolling Hills, California. The undisclosed transaction expands Headlands' clinical research capabilities in allergy and asthma, pediatric studies and vaccine trials while extending its Southern California footprint.

Headlands Research Acquires Clinical Research Professionals (St. Louis)

October 12, 2023

Healthcare Services

Headlands Research has acquired Clinical Research Professionals, a St. Louis–area clinical research site, expanding Headlands' network and geographic reach. The acquisition adds experienced investigators and capabilities across therapeutic areas including gastroenterology, neurology, and vaccines, supporting increased participant recruitment and trial capacity.

Headlands Research Acquires Pharmasite Research

February 29, 2024

Healthcare Services

Headlands Research, a multinational network of clinical trial sites, has acquired Pharmasite Research, a Maryland-based clinical trial site focused on mental illness and central nervous system (CNS) disorders. The deal expands Headlands' therapeutic capabilities in mental health and extends its site network's reach in the Mid-Atlantic, bringing the network to 18 sites across the United States and Canada.

Headlands Research Acquires AMCR Institute

July 27, 2023

Healthcare Services

Headlands Research has acquired AMCR Institute, a San Diego–based clinical research site specializing in metabolic, endocrine and medical device research (including continuous glucose monitors). The site will operate as Headlands Research AMCR Institute as part of Headlands' expanding network of clinical trial sites to support more trials and broaden therapeutic and device capabilities.