| # | Company | Employees |
|---|---|---|
| 1 |
Pfizerpfizer.com
A leading biopharmaceutical company focused on research and innovation to develop therapies that improve and extend the lives of patients worldwide |
102,598 |
| 2 |
ICON Central Laboratoriesiconplc.com
Global provider of central laboratory services for clinical development, with accreditation and certifications, and part of a larger company offering outsourced development services worldwide |
1,683 |
| 3 |
Schr枚dingerschrodinger.com
Innovative computational platform for biopharmaceutical and industrial research, with drug discovery programs and global collaborations in diverse therapeutic areas |
1,009 |
| 4 |
Axsome Therapeutics, Inc.axsome.com
Biopharmaceutical company focused on developing novel therapies for central nervous system conditions with limited treatment options, improving patient lives and providing more therapeutic options |
846 |
| 5 |
Becton, Dickinson and Company
A global medical technology company focused on producing and selling equipment, systems, and reagents to improve human health worldwide |
792 |
| 6 |
Menarini Stemlinestemline.com
Development and commercialization of innovative targeted therapies for cancer patients, including FDA-approved ELZONRIS and clinical-stage candidates. |
792 |
| 7 |
Sumitomo Chemical: Group Companies of the Americassumitomochemicalamerica.com
Diverse chemical company providing innovative products and technologies to address global needs, committed to corporate social responsibility and solving global challenges |
509 |
| 8 |
LetsGetCheckedletsgetchecked.com
A virtual care company offering telehealth services, pharmacy, and home laboratory tests for various health conditions, promoting accessible healthcare worldwide |
444 |
| 9 | 434 | |
| 10 |
Kaneka North Americakaneka.com
Producer of diverse chemical products, including resins, pharmaceuticals, food supplements, and synthetic fibers, also specializing in advanced photovoltaic solar energy systems. |
401 |
| 11 | 367 | |
| 12 |
Syndax Pharmaceuticalssyndax.com
A biotechnology company located in Waltham, MA focusing on developing pharmaceuticals |
334 |
| 13 |
Immunovantimmunovant.com
A clinical-stage immunology company developing targeted therapies for autoimmune diseases to improve the lives of affected individuals Visit immunovantcom for more information |
315 |
| 14 |
Roivantroivant.com
Roivant builds nimble biotech and healthcare technology companies to deliver innovative medicines targeting various diseases with a focus on unmet medical needs |
229 |
| 15 |
Formation Bioformation.bio
Technology platform optimizing clinical drug development, accelerating trial design, completion, and data quality to speed up new treatment access. |
196 |
| 16 |
Clever Leavescleverleaves.com
A leading multinational producer of pharmaceutical-grade cannabinoids, offering environmentally sustainable and high-quality products to B2B customers worldwide |
187 |
| 17 |
TransPerfect Life Scienceslifesciences.transperfect.com
Global content solutions for life sciences industries, specializing in eClinical innovation to streamline clinical processes worldwide from lab to launch |
185 |
| 18 |
AtaiBeckleyataibeckley.com
A biopharmaceutical company incubating and accelerating highly effective mental health treatments to address unmet patient needs and heal mental health disorders globally |
103 |
| 19 |
Target Healthtargethealth.com
A full service CRO specializing in paperless clinical trials, offering eSource EDC software, regulatory affairs, trial management, biostatistics, and more |
95 |
| 20 |
Y-mAbs Therapeutics, Inc.ymabs.com
A clinical biopharmaceutical company developing novel antibody-based cancer therapeutics to address unmet medical needs in pediatric and adult patients |
61 |
| 21 |
Pragmapragmatrading.com
Quantitative technology provider offering customizable trading algorithms and analytical solutions for optimal performance and transparent market connectivity |
45 |
| 22 |
PAVmed Inc.pavmed.com
Innovative medical device company with a rapid concept-to-commercialization business model, focusing on expanding pipeline strategy for value creation |
39 |
| 23 |
HOOKIPA Pharma Inc.hookipapharma.com
Clinical-stage biopharmaceutical company developing immunotherapies using an arenavirus platform to mobilize and amplify T cells for cancers and infectious diseases. |
27 |
| 24 |
Waypoint Biowaypointbio.com
Venture-backed biotech startup developing advanced cell therapies for solid tumors to revolutionize cancer treatment |
20 |
| 25 |
Kuraray Noritake Dental-USkuraraydental.com
Innovative dental technology company transforming cutting-edge research into practical solutions for the betterment of humanity |
10 |
| 26 |
Genetic Leapgenetic-leap.com
Using AI, the company pioneers disease cure since 2016, controlling gene expression of undruggable targets like MYC and IL-2 via pill delivery |
8 |
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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 Nov 2, 2026.
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The same list elsewhere in United States
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