| # | Company | Employees |
|---|---|---|
| 1 |
Thermo Fisher Scientificthermofisher.com
A global leader in science services, providing innovative technologies and pharmaceutical support to make the world healthier, cleaner, and safer |
100,256 |
| 2 | 40,813 | |
| 3 |
The National Institutes of Healthnih.gov
Largest public funder of biomedical research investing billions annually to improve health, reduce illness, and support medical breakthroughs worldwide. |
28,537 |
| 4 |
Agilent Technologiesagilent.com
Innovative company providing advanced analytical, research, and diagnostic solutions for various industries worldwide, including healthcare, environmental safety, and energy solutions |
25,000 |
| 5 |
Syneos Healthsyneoshealth.com
A leading biopharmaceutical solutions organization driving customer success by translating clinical, medical, and commercial insights into outcomes worldwide Promoting inclusivity and sustainability |
23,569 |
| 6 |
Charles River Laboratoriescriver.com
Guided by strong purpose, creating healthier lives, focusing on therapeutics for patients, animal care, planet well-being, and its passionate, skilled people. |
22,000 |
| 7 | 18,287 | |
| 8 |
Regeneronregeneron.com
Develops and commercializes life-transforming medicines for serious diseases, establishing new approaches in science, manufacturing, and health. Building a future in biopharmaceuticals. |
16,874 |
| 9 |
Gilead Sciencesgilead.com
A company focused on delivering innovative medicines in virology and oncology, addressing health inequities, and empowering people to live healthier lives |
14,891 |
| 10 | 13,000 | |
| 11 |
Waters Corporationwaters.com
A global leader in analytical instruments and software, pioneering innovations in chromatography, mass spectrometry, and thermal analysis for various sciences |
11,842 |
| 12 |
Fortreafortrea.com
A global provider of clinical development and patient access solutions, specializing in accelerating life-changing therapies to patients through innovative trial management services |
11,430 |
| 13 |
MilliporeSigmasigmaaldrich.com
Provides scientists with state-of-the-art tools, services, and expertise for experiments and product development, impacting life and health globally. Offers broad portfolio and integrated services. |
10,484 |
| 14 |
Illuminaillumina.com
The company develops innovative technologies and assays for genetic analysis, enabling personalized medicine and advancing disease research, drug development, and molecular testing |
9,673 |
| 15 |
Bio-Rad Laboratoriesbio-rad.com
Development and supply of innovative products for life science research and medical diagnostics, enhancing discovery and clinical results worldwide. |
9,416 |
| 16 | 8,293 | |
| 17 |
Biogenbiogen.com
Company pioneers innovative science, delivering new medicines to transform patients' lives, with a global presence and focus on superior treatment outcomes. |
7,724 |
| 18 |
Clarioclario.com
A leading healthcare research and technology company providing expertise and technology for advancing clinical trials in various therapeutic areas worldwide |
7,151 |
| 19 |
Modernamodernatx.com
Pioneering mRNA technology for new medicines to improve patient lives by providing real-time instructions for protein production in cells |
6,906 |
| 20 |
PerkinElmerperkinelmer.com
A global provider of technology and service solutions for measuring, quantifying, detecting, and reporting in various industries to ensure quality and safety |
6,485 |
| 21 |
Vertex Pharmaceuticalsvrtx.com
Global biotechnology company focusing on creating medicines for serious and life-threatening diseases, with a pioneering history in treating cystic fibrosis |
6,382 |
| 22 |
FUJIFILM Biotechnologiesfujifilm.com
Accelerates biopharma progress, expands capabilities, streamlines processes, and strengthens innovation for cures, vaccines, and biologics, improving patient outcomes worldwide. |
5,907 |
| 23 |
Nateranatera.com
Global leader in cell-free DNA testing for oncology, women's health, and organ health Pioneering noninvasive testing to inform proactive treatment worldwide |
5,791 |
| 24 |
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 |
| 25 |
Exact Sciencesexactsciences.com
Development of cancer prevention and early detection solutions, guiding personalized treatment to help eradicate cancer and improve patient outcomes. |
5,321 |
| 26 |
Alexion Pharmaceuticals, Inc.alexion.com
Development of innovative medicines targeting rare diseases, focusing on complement system biology, expanding global reach to serve patients worldwide. |
5,112 |
| 27 |
Brukerbruker.com
Development and provision of advanced analytical instrumentation and solutions for research, industrial production, quality assurance, and process reliability worldwide. |
4,824 |
| 28 |
Cepheidcepheid.com
Healthcare company pioneering molecular diagnostics with automated systems and tests for a wide range of infections, diseases, and oncology, delivering actionable results Partnered with industry leader for expertise and solutions |
4,675 |
| 29 |
Guardant Healthguardanthealth.com
Develops advanced blood and tissue tests using AI and real-world data to improve cancer detection, monitoring, and treatment selection. |
4,663 |
| 30 |
Kite Pharmakitepharma.com
development and manufacturing of engineered T cell therapies targeting hematologic cancers, focusing on personalized, patient-specific cancer immunotherapy treatments. |
4,024 |
| 31 |
Revvityrevvity.com
Revvity specializes in innovative health science solutions, technologies, and services for healthcare advancements worldwide, covering discovery, development, and diagnosis to cure |
3,569 |
| 32 |
Sigma-Aldrichbit.ly
Providing scientists with lab materials, technologies, and services to simplify, accelerate, and improve life science research and biotech production worldwide. |
3,467 |
| 33 |
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 |
| 34 |
Dow AgroSciencescorteva.com
Agricultural technology company formerly known as Dow AgroSciences, now part of Corteva Agriscience Visit Corteva's website for updates |
3,352 |
| 35 |
BioMarin Pharmaceutical Inc.biomarin.com
A global biotechnology company focused on developing targeted therapies for rare genetic diseases, improving lives through genetic discovery and innovation |
3,198 |
| 36 |
Tempus AItempus.com
Utilizing AI and data analytics, the company empowers physicians to personalize patient care with real-time insights and targeted therapies |
3,051 |
| 37 |
Bio-Technebio-techne.com
A leading developer and manufacturer of high-quality purified proteins, reagent solutions, diagnostic products, and genomic tools for research and clinical use globally |
2,924 |
| 38 |
Myriad Geneticsmyriad.com
Development and provision of molecular tests assessing disease risk and progression, guiding treatment decisions to improve patient care. |
2,899 |
| 39 |
Alltechalltech.com
Provides smarter, sustainable agriculture solutions globally. Improves plant and animal health, performance. Delivers better nutrition for all, decreased environmental impact. |
2,885 |
| 40 |
Alnylam Pharmaceuticalsalnylam.com
A global biotech company pioneering RNAi therapeutics to treat rare genetic diseases, with a breakthrough product and a robust pipeline |
2,883 |
| 41 |
Premier Researchpremier-research.com
Global clinical research and consulting services specializing in biotech, accelerating drug development, overcoming trial challenges, and delivering personalized end-to-end solutions. |
2,858 |
| 42 | 2,682 | |
| 43 |
Life Technologiesthermofisher.com
Scientific leadership providing innovative technologies, analytical solutions, patient diagnostics, and laboratory productivity tools through premier brands to enable healthier and safer research environments. |
2,592 |
| 44 |
Legend Biotechlegendbiotech.com
Global biotechnology company developing and manufacturing novel therapies using innovative technologies for patients worldwide, with headquarters in NJ and manufacturing sites in US, China, and Belgium |
2,527 |
| 45 | 2,410 | |
| 46 |
Neurocrine Biosciencesneurocrine.com
A neuroscience-focused biopharmaceutical company dedicated to discovering treatments for neurological, neuroendocrine, and neuropsychiatric disorders, providing hope for patients with limited options |
2,378 |
| 47 |
Neogen Corporationneogen.com
Provider of solutions for food processing, animal protein, agriculture, companion animals, performance animals, life sciences, and toxicology industries Enhancing efficiency and safety |
2,366 |
| 48 |
10x Genomics10xgenomics.com
This company provides tools for single cell analysis, spatial analysis, and in situ tools to advance research in various biological fields |
2,364 |
| 49 |
Beckman Coulter Life Sciencesbeckman.com
Develop laboratory instruments and solutions enhancing workflow efficiency, reliability, and innovation in liquid handling, genomics, and particle analysis. |
2,331 |
| 50 |
argenxargenx.com
Global immunology company focused on developing novel antibody-based medicines for severe autoimmune diseases through collaborations with leading researchers |
2,315 |
| 51 |
The Jackson Laboratoryjax.org
A leading nonprofit research organization focused on genetics and genomics, accelerating discovery to cure diseases like cancer, diabetes, Alzheimer's, and more |
2,270 |
| 52 |
Kemin Industrieskemin.com
Global manufacturer providing over 500 specialty ingredients for diverse industries including human health, animal feed, pet food, and crop technologies, improving quality of life. |
2,221 |
| 53 |
Precision For Medicineprecisionformedicine.com
A global precision medicine clinical research organization improving therapeutics development with integrated clinical operations, laboratory expertise, and advanced data sciences |
2,060 |
| 54 |
OPKO Health, Inc.opko.com
A healthcare company providing first-in-class products, diagnostics, research, and pharmaceutical solutions to meet unmet patient needs globally |
2,036 |
| 55 |
Bharat Biotechbharatbiotech.com
Develops and manufactures vaccines, bio-therapeutics including COVID-19 vaccine, and treatments for diabetic foot ulcers, burns; focuses on affordable, high-quality healthcare. |
2,012 |
| 56 |
Promega Corporationpromega.com
Promega Corporation collaborates globally to develop innovative technologies in the life sciences, fostering creativity, sustainability, and meaningful connections with customers |
1,991 |
| 57 |
BeiGenebeonemedicines.com
Global oncology company developing accessible and affordable cancer treatments through innovative research, collaborations, and commitment to improving medicine access for patients worldwide |
1,967 |
| 58 | 1,917 | |
| 59 |
Cell Signaling Technology (CST)cellsignal.com
A privately-owned research institute specializing in developing high-quality antibodies for cancer research, validated by PhD scientists for reliable results |
1,818 |
| 60 |
Foundation Medicinefoundationmedicine.com
A molecular information company focused on transforming cancer care by providing comprehensive genomic profiling to inform personalized treatment options |
1,775 |
| 61 |
Integrated DNA Technologiesidtdna.com
Provider of genomics products and services collaborating with scientific and health partners to accelerate breakthroughs and improve human health. |
1,749 |
| 62 |
Roche Molecular Systemsroche.com
A California-based company part of Roche Diagnostics in Switzerland, specializing in developing and supplying innovative medical diagnostic products and services |
1,748 |
| 63 |
Insmed Incorporatedinsmed.com
Global biopharmaceutical company dedicated to developing therapies for serious and rare diseases, striving to enhance the patient experience worldwide |
1,722 |
| 64 |
KBI Biopharmakbibiopharma.com
Provides fully-integrated, accelerated drug development and biomanufacturing services to pharmaceutical and biotechnology companies globally with world-class analytical capabilities. |
1,694 |
| 65 |
Caris Life Sciencescarislifesciences.com
Development and delivery of advanced molecular profiling and AI-driven precision medicine tools for disease detection, diagnosis, monitoring, and therapy selection. |
1,642 |
| 66 |
Exelixisexelixis.com
A diverse team dedicated to transforming science into new cancer treatments, driven by innovative drug discovery and commercialization efforts |
1,566 |
| 67 |
Ionis Pharmaceuticals, Inc.ionis.com
Leading pioneer developing RNA-targeted medicines and gene editing therapies to treat serious neurological and cardiovascular diseases through advanced disease biology research. |
1,546 |
| 68 |
Ultragenyxultragenyx.com
Development and commercialization of novel therapies targeting rare and ultrarare genetic diseases with high unmet medical needs. |
1,520 |
| 69 |
Pall Life Sciencespall.com
A global leader in filtration and purification solutions, helping diverse customers improve processes, protect patients, enhance manufacturing, and deliver sustainable benefits |
1,480 |
| 70 |
Liquid Treesliquidtrees.org
The company promotes the importance of diatoms in capturing carbon dioxide and producing oxygen, aiming to remove 10 billion tonnes of CO2 |
1,447 |
| 71 |
Flatiron Healthflatiron.com
Improving and extending lives by leveraging the experiences of individuals with cancer |
1,442 |
| 72 |
Repligen Corporationrepligen.com
Provides innovative bioprocessing solutions for biotherapeutic manufacturing, including filtration, chromatography systems, process analytics, fluid management, and proteins, for biologics, cell and gene therapies, mRNA, and antibodies. |
1,432 |
| 73 |
Emergent BioSolutionsemergentbiosolutions.com
This company develops, manufactures, and delivers protections against public health threats to defend people and ensure preparedness |
1,366 |
| 74 |
Certified Groupcertifiedgroup.com
Family of laboratory and consulting companies offering expert testing, consulting, and auditing services for various industries across North America |
1,359 |
| 75 |
GenScriptgenscript.com
A global biotech company with a strong presence in various regions, offering innovative products and services in synthetic biology, immunotherapy, and bioinformatics |
1,353 |
| 76 |
M茅rieux NutriSciences - North Americamxns.com
Global food safety partner providing testing, labeling, auditing, consulting, and research services to the food industry worldwide, focusing on consumer health and scientific excellence |
1,301 |
| 77 |
Twist Biosciencetwistbioscience.com
Company develops proprietary silicon-based manufacturing process for synthetic DNA, enabling cost-effective, rapid, precise, high-throughput DNA synthesis and sequencing for life science researchers across diverse fields. |
1,300 |
| 78 |
Azenta Life Sciencesazenta.com
Global provider of life sciences solutions, specializing in cold-chain sample management and genomic services for drug development, clinical research, and cell therapies worldwide |
1,267 |
| 79 |
GeneDxgenedx.com
Specializing in genetic diagnosis, offering exome and genome tests to provide personalized health plans, accelerate drug discovery, and improve health system efficiencies |
1,260 |
| 80 |
Revolution Medicinesrevmed.com
This company discovers and develops new drugs for cancer by leveraging natural products and evolutionary insights to target frontier oncology |
1,216 |
| 81 |
Sarepta Therapeuticssarepta.com
Development of precision genetic medicines targeting rare diseases with significant impact on patients' lives and futures. |
1,160 |
| 82 |
PTC Therapeutics, Inc.ptcbio.com
Developing and commercializing medicines for children and adults with rare and serious diseases, focusing on patient-centered biopharmaceutical solutions. |
1,155 |
| 83 |
Hamilton Companyhamiltoncompany.com
Designs and manufactures liquid handling, process analytics, robotics, and automated storage solutions for life science and biotechnology industries worldwide. |
1,124 |
| 84 |
Advanced Clinicaladvancedclinical.com
clinical development and strategic resourcing organization improving clinical research experiences and outcomes through customized solutions and experienced guidance |
1,118 |
| 85 | 1,105 | |
| 86 |
Syneos Health Commercial Solutionscommercialcareers.syneoshealth.com
A fully integrated biopharmaceutical solutions organization specializing in accelerating customer success by translating insights into outcomes for modern market realities |
1,064 |
| 87 |
Velocity Clinical Research, Inc.velocityclinical.com
Dedicated clinical research sites deliver high-quality trial data from many patients as quickly as possible, ensuring exemplary patient care throughout the process. |
1,036 |
| 88 |
MESO SCALE DIAGNOSTICS, LLC.mesoscale.com
Develops, manufactures, and commercializes assays and instruments for measuring molecules in biological samples, supporting medical research and drug development with proprietary technology. |
1,035 |
| 89 |
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 |
| 90 |
Forensic Science Laboratory
Biotechnology company located in Grayling, Michigan specializing in forensic science services and solutions |
1,002 |
| 91 |
Amyrisamyris.com
vertically integrated biomanufacturing company, specialty molecules for flavors, fragrances, materials, beauty, personal care, food, enhancing lives, protecting ecosystems |
989 |
| 92 |
Ambry Geneticsambrygen.com
A leading clinical genomic diagnostic company with the largest genetic sequencing lab worldwide, offering precision medicine solutions and partnering with non-profit organizations |
977 |
| 93 |
BridgeBiobridgebio.com
This company is focused on finding, developing, and delivering breakthrough medicines for genetic diseases, bridging the gap between science and patient needs |
977 |
| 94 |
Artivion, Inc.artivion.com
A global leader in developing and supplying medical devices and implantable tissues for cardiac and vascular surgical procedures, specializing in aortic repair |
975 |
| 95 |
Novavaxnovavax.com
Creating accessible next generation vaccines to combat infectious diseases and viral threats, driven by passion for global health and guided by science and technology |
972 |
| 96 |
Bruker Daltonicsbruker.com
Development and manufacturing of advanced mass spectrometry instruments and software for pharmaceutical, biotechnology, diagnostics, and chemical analysis research applications. |
939 |
| 97 |
Organogenesisorganogenesis.com
A regenerative medicine company specializing in advanced wound care, surgical, and sports medicine solutions, offering innovative products to address patient needs |
930 |
| 98 |
BioAgilytixbioagilytix.com
Global CRO specializing in PK, immunogenicity, biomarkers, and cell-based assays for drug development, with locations across the US, Australia, and Germany |
923 |
| 99 |
Iovance Biotherapeutics, Inc.iovance.com
Develops and delivers tumor infiltrating lymphocyte (TIL) therapies, pioneering a transformational approach to cure cancer by harnessing the immune system. |
921 |
| 100 | 904 |
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How this list is built
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 9, 2026.
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