| # | Company | Employees |
|---|---|---|
| 1 | 13,000 | |
| 2 |
Clarioclario.com
A leading healthcare research and technology company providing expertise and technology for advancing clinical trials in various therapeutic areas worldwide |
7,151 |
| 3 |
VWR, part of Avantorvwr.com
Global provider of critical products and services for biopharma, healthcare, education, and technology industries, serving research, development, and production activities worldwide |
5,646 |
| 4 |
Eurofins Lancaster Laboratorieseurofinsus.com
A global contract laboratory providing comprehensive services in pharmaceutical, biopharmaceutical, and environmental sciences to a diverse range of clients worldwide |
3,426 |
| 5 | 2,410 | |
| 6 |
Spark Therapeutics, Inc.sparktx.com
Leading gene therapy company focused on treating inherited diseases through innovative science, integrated expertise, and commitment to accelerating healthcare transformation globally |
1,035 |
| 7 |
AgroFreshagrofresh.com
AgroFresh empowers fresh produce businesses with science-based solutions to enhance quality, extend shelf life, prevent food waste, and preserve resources |
726 |
| 8 |
Eurofins BioPharma Product Testing North Americaeurofinsus.com
Global network of GMP product testing labs for pharmaceutical and medical device companies offering comprehensive services, methodologies, and personalized solutions worldwide |
653 |
| 9 | 595 | |
| 10 |
BioTelemetry, Inc.gobio.com
A leading mobile and wireless medical technology company, providing health information delivery, cardiac monitoring, blood-glucose monitoring, medical imaging, and manufacturing services Passionate about saving lives |
593 |
| 11 |
Microbac Laboratories, Inc.microbac.com
Testing company partnering with businesses to ensure quality, safety, and performance of products and operations through a network of laboratories Delivery of timely and reliable data |
479 |
| 12 |
Resolianresolian.com
Resolian collaborates on therapeutic modalities to provide world-class scientific solutions, specializing in bioanalytics and analytical sciences for various industries |
463 |
| 13 |
Philips BioTel Heartgobio.com
The company specializes in cardiac arrhythmia diagnosis and monitoring, offering a full range of cardiac monitoring solutions for healthcare providers |
459 |
| 14 |
SP Industries Inc.scientificproducts.com
Manufactures scientific equipment, fill-finish solutions, freeze dryers, and lab apparatus for research, healthcare, and various industries worldwide. Trusted partner. |
376 |
| 15 |
Solesissolesis.com
A market leader in biomaterials for life sciences, developing critical components for medical devices and single-use technologies Operates through four subsidiaries |
361 |
| 16 |
Jeanes Hospitaljeanes.com
Biotechnology company in Philadelphia, specializing in research and development of advanced medical solutions Located at 7600 Central Ave |
341 |
| 17 |
Fisher Scientificfishersci.com
Leading scientific marketplace providing a wide range of lab and production essentials, support services, and innovative solutions to drive productivity and innovation |
338 |
| 18 |
Krystal Biotech, Inc.krystalbio.com
This company specializes in developing genetic medicines to address urgent medical needs, aiming to bring innovative solutions to patients |
310 |
| 19 |
Braeburnbraeburnrx.com
Dedicated to transforming the management of opioid use disorder through community partnerships, aiming to provide the best care and support for individuals |
310 |
| 20 |
Eurofins Central Laboratoryeurofinscentrallaboratory.com
Global provider of high quality central laboratory services supporting all phases of clinical trials, offering a wide range of laboratory testing solutions worldwide |
261 |
| 21 |
Rocket Pharmaceuticalsrocketpharma.com
Clinical-stage company dedicated to gene therapy cures, fostering team collaboration and well-being for patients through biotechnology innovation. |
221 |
| 22 |
Cabaletta Biocabalettabio.com
Clinical-stage biotechnology developing engineered T cell therapies for autoimmune diseases, seeking deep and durable treatment for patients Headquarters in Philadelphia, PA |
190 |
| 23 |
Sylvansylvan.bio
Global producer and distributor of mushroom spawn with facilities worldwide, supplying over 65 countries |
184 |
| 24 |
ICON Government and Public Health Solutionsiconplc.com
Provides clinical development and staffing services to US Government agencies, multinational public health organizations, and global NGOs in various disease areas. |
180 |
| 25 |
Menarini Silicon Biosystemssiliconbiosystems.com
Provider of rare cell technologies for clinical research, offering solutions for high-resolution cell study, enumeration, and sorting with single-cell precision |
168 |
| 26 |
TechData Service Company, LLCtechdataservice.com
Provider of IT and data science professionals specializing in pharmaceutical research industries, offering technology solutions to maximize cost savings and productivity |
160 |
| 27 |
DRUGSCANdrugscan.com
National toxicology and infectious disease testing laboratory offering prescription drug monitoring, specialized drug testing, workplace drug testing, and COVID-19 testing services |
147 |
| 28 |
Reaction Biologyreactionbiology.com
A trusted research partner in preclinical drug discovery, offering biochemical targets, cell-based assays, in vivo oncology models, custom assay development, and protein production services |
146 |
| 29 |
Advanced Therapies, LLCadvancedtherapies.com
Provides contract testing, development, and manufacturing for advanced cell therapies, focusing on faster development, predictable production, reduced complexity, and lower costs for high-touch products. |
121 |
| 30 |
Center for Breakthrough Medicinesbreakthroughmedicines.com
Provides integrated contract development and manufacturing for cell and gene therapies, offering a one-source solution for advanced therapies. |
70 |
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Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Oct 24, 2026.
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