| # | Company | Employees |
|---|---|---|
| 1 |
BeOne Medicinesbeonemedicines.com
Developing innovative, affordable cancer treatments for hematology and solid tumors with a global team and collaborative approach. |
3,350 |
| 2 |
Curium Pharmacuriumpharma.com
Global leader in nuclear medicine, providing life-changing diagnostics and treatment for cancer patients worldwide through innovative radiopharmaceutical products and AI-driven solutions |
2,236 |
| 3 |
EMD Serono, Inc.emdserono.com
Developing biopharmaceutical treatments for infertility, multiple sclerosis, and cancer to address serious unmet medical needs in healthcare. |
1,788 |
| 4 | 1,625 | |
| 5 |
Takeda Oncologytakedaoncology.com
Global oncology business unit leveraging transformative medicines to treat hematologic cancers and solid tumors, driving innovation through partnerships and cutting-edge science |
1,621 |
| 6 |
Lantheuslantheus.com
A company with over 65 years of experience in delivering science-based solutions for improved patient outcomes through diagnostics, radiotherapeutics, and AI |
1,301 |
| 7 |
Sumitomo Pharma America, Inc.sumitomo-pharma.com
Science-driven biopharmaceutical company focusing on therapeutic breakthroughs in psychiatry, neurology, oncology, urology, women鈥檚 health, rare disease, and cell/gene therapies |
1,161 |
| 8 |
Servier Pharmaceuticalsservier.us
A global pharmaceutical company focused on innovation in oncology, cardiovascular, immuno-inflammatory, neuroscience, and diabetes, prioritizing patient well-being over profits |
951 |
| 9 |
Sunovion Pharmaceuticalssunovion.com
Global biopharmaceutical company specializing in innovative treatments for serious neurological and psychiatric conditions through research, development, and commercialization. |
915 |
| 10 |
Azurity Pharmaceuticalsazurity.com
Development and distribution of innovative, high-quality medicines across multiple therapeutic areas, leveraging data and AI for global market reach. |
900 |
| 11 |
Oraoraclinical.com
An industry-leading firm specializing in ophthalmic drug and device development, offering comprehensive services from concept to market approval worldwide |
700 |
| 12 |
inVentiv Health Commercialsyneoshealth.com
A fully integrated biopharmaceutical solutions organization offering expertise, data, and insights to accelerate performance in clinical and commercial sectors globally |
686 |
| 13 |
Agios Pharmaceuticalsagios.com
Commercial-stage biopharmaceutical company focused on developing and delivering innovative medicines for rare diseases, rooted in hematology, reflecting patient priorities. |
644 |
| 14 |
Nitto Aveciaavecia.com
A leader in oligonucleotide development and production, offering a comprehensive solution for pharmaceutical innovators to create transformative new therapeutics |
614 |
| 15 |
Alira Healthalirahealth.com
Global healthcare firm providing consulting, clinical services, technology, and real-world evidence to support pharma, biotech, and medtech clients. |
574 |
| 16 |
Deciphera Pharmaceuticalsdeciphera.com
Discovering, developing, commercializing new medicines for people with cancer, leveraging proprietary switch-control kinase inhibitor platform and expertise in kinase biology. |
540 |
| 17 |
Cold Chain Technologiescoldchaintech.com
Specializing in thermal packaging solutions for temperature-sensitive materials, with a focus on the life science industry, known for innovation and reliability |
478 |
| 18 |
Collegium Pharmaceutical, Inc.collegiumpharma.com
Specialty pharmaceutical company focused on improving the lives of those with serious medical conditions through a portfolio of differentiated medications |
471 |
| 19 |
Paratek Pharmaceuticalsparatekpharma.com
Commercial-stage biopharmaceutical company developing transformative solutions for infectious diseases and difficult-to-treat conditions, striving for positive outcomes and patient stories |
427 |
| 20 |
Infinity Pharmaceuticalsinfi.com
This company operates an alumni page designed to connect and engage with former members or employees |
398 |
| 21 |
AMAG Pharmaceuticalsamagpharma.com
Innovative medicine development and delivery for challenging health conditions, with a focus on understanding patient needs and advancing clinical research |
369 |
| 22 |
Cerevel Therapeuticscerevel.com
Biopharmaceutical company developing therapies for central nervous system disorders, with a portfolio targeting Parkinson's, Alzheimer's, epilepsy, schizophrenia, and addiction |
347 |
| 23 |
Biodeal Pharmaceuticals Limitedbiodealpharma.com
Contract Development Manufacturing Organization offering diverse pharmaceutical formulations including nasal sprays, injectables, solid orals, nutraceuticals, and dermocosmetics for global clients. |
346 |
| 24 |
Ocular Therapeutix, Inc.ocutx.com
A biopharmaceutical company developing innovative therapies for eye diseases using bioresorbable hydrogel-based technology, with a focus on drug delivery solutions |
346 |
| 25 |
Syner-Gsynergbiopharma.com
Specializing in Chemistry, Manufacturing, and Controls (CMC) services, including regulatory affairs, technical development, quality/IT, and medical writing for various biopharmaceutical products |
346 |
| 26 |
Karyopharm Therapeutics Inc.karyopharm.com
Develops and commercializes therapies, including XPOVIO, for various cancers by pioneering nuclear export inhibition science, focusing on hematologic and solid tumors. |
319 |
| 27 |
ICON plc (formerly Aptiv Solutions)iconplc.com
Global provider of drug development solutions and services specializing in strategic development, management, and analysis of clinical development programs for pharmaceutical, biotech, and medical device industries |
190 |
| 28 |
Iterative Healthiterative.health
Leading computational gastroenterology company utilizing AI tools for physician decision support, drug development acceleration, and clinical trial facilitation in Cambridge, MA |
176 |
| 29 |
Sharp Sterile Manufacturingsharpservices.com
Provides safest sterile drug products for clinical use and small scale requirements through modern technology, isolator-based filling lines, and skilled staff. |
175 |
| 30 |
Amylyx Pharmaceuticalsamylyx.com
Global biopharmaceutical company dedicated to discovering and developing treatments for progressive neurodegenerative diseases, focusing on creating more moments for the community |
171 |
| 31 |
Recipharm Advanced Biorecipharm-ab.com
A visionary CDMO founded in 2019, specializing in developing and manufacturing complex biological drugs and innovative therapies for commercial launch |
171 |
| 32 |
Boston Oncologybostononcology.com
Innovative biogenerics company based in Riyadh, redefining excellence in licensing, development, manufacturing, and distribution of US-quality medicines across therapeutic areas |
152 |
| 33 |
AllCare Plus Pharmacyallcarepluspharmacy.com
Independent patient support services in MA specializing in complex medication management for difficult diseases, providing caring service, clinical knowledge, and compliance programs |
152 |
| 34 |
Outcomeoutcome.com
A research company founded in 1998, specializing in outcomes studies, patient registries, post-approval research, and quality improvement initiatives across 30 therapeutic areas globally |
66 |
| 35 |
Novartis Sciencenovartis.com
A global team of over 6,000 professionals focusing on innovative drug discovery in various disease areas with key technology competencies |
16 |
Turn this list into pipeline
Tamtam finds the decision-makers at every company on a list like this one, with verified emails, phone numbers and the buying signals that tell you when to reach out.
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 24, 2026.
More company lists in Massachusetts
- The largest companies in Massachusetts 3,093
- SaaS companies in Massachusetts 322
- Software Development companies in Massachusetts 245
- Hospitals and Health Care companies in Massachusetts 193
- Financial services firms in Massachusetts 166
- Education providers in Massachusetts 160
- Higher Education companies in Massachusetts 157
- IT Services and IT Consulting companies in Massachusetts 147
- Venture capital and private equity firms in Massachusetts 141
- Financial Services companies in Massachusetts 127
- Manufacturers in Massachusetts 119
- AI companies in Massachusetts 116
- Critical infrastructure operators in Massachusetts 108
- Healthcare providers in Massachusetts 108
- Retail chains in Massachusetts 107
- Venture Capital and Private Equity Principals companies in Massachusetts 107
- Biotechnology Research companies in Massachusetts 97
- IT services companies in Massachusetts 93
- AI-native companies in Massachusetts 88
- Real Estate companies in Massachusetts 82
- Pharmaceutical companies in Massachusetts 82
- Non-profit Organizations companies in Massachusetts 77
- Contract manufacturers in Massachusetts 69
- Energy companies in Massachusetts 69
The same list elsewhere in United States
- Pharmaceutical Manufacturing companies in the United States 464
- Pharmaceutical Manufacturing companies in New Jersey 80
- Pharmaceutical Manufacturing companies in Pennsylvania 43
- Pharmaceutical Manufacturing companies in California 41
- Pharmaceutical Manufacturing companies in New York State 28
- Pharmaceutical Manufacturing companies in Florida 27
- Pharmaceutical Manufacturing companies in North Carolina 26