Tamtam Start free

Pharmaceutical companies headquartered in Maryland

Tamtam tracks 34 pharmaceutical companies headquartered in Maryland. This list ranks all of them by number of employees on LinkedIn, led by Precision Medicine Group, Precision For Medicine and US Pharmacopeia. Their median headcount is 383. Half of them were founded in 1996 or later. The most common headquarters are Rockville (14), Gaithersburg (7) and Bethesda (5).

๐Ÿ‡บ๐Ÿ‡ธ Maryland34 companiesUpdated Nov 2, 2026
#CompanyIndustryHeadquarters EmployeesFounded
1
Precision Medicine Groupprecisionmedicinegrp.com

A company founded in 2012 focused on improving the drug development process through technology, data, human expertise, and strategic acquisitions

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 3,553 2012
2
Precision For Medicineprecisionformedicine.com

A global precision medicine clinical research organization improving therapeutics development with integrated clinical operations, laboratory expertise, and advanced data sciences

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 2,060 n/a
3
US Pharmacopeiausp.org

An independent, nonprofit organization establishing quality standards for medicines and dietary supplements to protect patient safety and improve global health

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Rockville 1,672 1820
4
United Therapeutics Corporationunither.com

Biotechnology company developing unique products for patients with chronic conditions, with a focus on providing transplantable organs Employees collaborate worldwide

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Silver Spring 1,515 1996
5
Emmes Grouptheemmesgroup.com

A company dedicated to advancing public health and biopharmaceutical innovation by combining human intelligence with artificial intelligence in clinical research

Research Services ๐Ÿ‡บ๐Ÿ‡ธ Rockville 1,411 2024
6
Emergent BioSolutionsemergentbiosolutions.com

This company develops, manufactures, and delivers protections against public health threats to defend people and ensure preparedness

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ Gaithersburg 1,366 1998
7
Emmestheemmesgroup.com

A global Contract Research Organization (CRO) with expertise in clinical research across various therapeutic areas, supporting public health and biopharmaceutical innovation

Research Services ๐Ÿ‡บ๐Ÿ‡ธ Rockville 1,188 n/a
8
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.

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ Rockville 1,035 1995
9
Navitas Life Sciencesnavitaslifesciences.com

Global clinical research organization providing technology-driven CRO services, data science, regulatory support, and industry-focused consulting to biopharmaceutical clients worldwide

Research Services ๐Ÿ‡บ๐Ÿ‡ธ Gaithersburg 1,014 n/a
10
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

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ Gaithersburg 972 1987
11
MedImmuneparkedpage.astrazeneca.com

Global biologics research and development arm focused on discovering, developing, and commercializing small molecule and biologic prescription medicines across various medical areas

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ Gaithersburg 888 1987
12
Tasly Pharmaceutica Group Co., Ltd.tasly.com

Overseas headquarters of a China-based pharmaceutical company, publicly traded on the Shanghai exchange, focusing on healthcare products and services

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Rockville 875 2006
13
Supernus Pharmaceuticals, Inc.supernus.com

A pharmaceutical company specializing in developing and marketing products for central nervous system diseases, including treatments for ADHD, epilepsy, migraine, and Parkinson's disease

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Rockville 844 2005
14
Walter Reed Army Institute of Researchwrair.health.mil

The company conducts research to develop vaccines, drugs, and solutions to protect military personnel from infectious diseases and enhance their resilience and readiness

Research Services ๐Ÿ‡บ๐Ÿ‡ธ Silver Spring 678 1893
15
BioReliancesigmaaldrich.com

Offers comprehensive biosafety and product characterization testing services for pharma and biopharma, ensuring regulatory compliance and faster market access for life-changing drugs.

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ Rockville 503 1947
16
REGENXBIOregenxbio.com

A biotechnology innovator specializing in developing and licensing gene therapy products using a proprietary AAV gene delivery platform

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ Rockville 388 2008
17
Ambu USAambuusa.com

Design and manufacture of life-saving medical devices including resuscitators and single-use endoscopy products for patient care.

Medical Equipment Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Columbia 383 1937
18
MacroGenics, Inc.macrogenics.com

A leader in innovative medicine discovery and development with next-generation antibody technologies, focused on treating cancer and fostering employee growth

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ Rockville 379 2000
19
Wellness Corporate Solutions, LLClabcorp.com

Provider of comprehensive well-being solutions and insights, including COVID-19 return to work solutions, biometric screenings, health coaching, and analytics for employers and health consumers

Wellness and Fitness Services ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 377 2004
20
PPDโ„ข Evideraโ„ข Solutionsppd.com

Evidera offers evidence-based solutions for demonstrating the real-world effectiveness, safety, and value of biopharmaceutical products from early development to loss of exclusivity

Research Services ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 373 2013
21
Dynasplint Systems, Inc.dynasplint.com

This company designs and sells gentle stretching devices to increase joint range of motion and expedite recovery for patients Dedicated to restoring quality of life

Medical Equipment Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Severna Park 373 1981
22
Pii, A Jabil Companypharm-int.com

Provides comprehensive drug development and manufacturing solutions for aseptic and oral dosage forms, handling complex formulations, potent compounds, and controlled substances.

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Hunt Valley 351 1994
23
Technical Resources International, Inc.tech-res.com

A certified Hispanic woman-owned organization providing product development support services to the global drug, biologic, vaccine, medical device, and health sector communities

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Bethesda 318 1979
24
ABLablinc.com

Provides product development expertise, GMP manufacturing, and analytical testing capabilities for life sciences, advancing vaccines, therapies, and diagnostics from concept to clinical trials.

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ Rockville 298 1961
25
KPL (Part of LGC Clinical Diagnostics)seracare.com

Provider of over 800 high-quality reagents and kits for immunoassays, immunohistochemistry, infectivity assays, and flow cytometry, focusing on sensitivity and specificity optimization

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ Gaithersburg 181 1986
26
StageBiostagebio.com

A leading international provider of GLP-compliant research, preclinical and clinical histology, pathology, and specimen archiving services for biopharmaceutical, medical device, and contract research industries

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ Frederick 122 2001
27
AbelZetaabelzeta.com

A subsidiary of CBMG Holdings specializing in developing cell therapies for cancerous and autoimmune diseases

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ Rockville 121 2009
28
Cangene bioPharmaemergentcontractmanufacturing.com

Provides fill/finish services for pharmaceutical and biotechnology companies. Aseptically fills liquid and lyophilized products in vials and syringes, with global distribution.

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Rockville 82 1980
29
Paragon Bioservices, Inc.biologics.com

A full-service partner specializing in viral vector scale-up, production, and cell therapy development for biotherapeutics, with global manufacturing facilities

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ Baltimore 60 n/a
30
Adaptive Phage Therapeuticsaphage.com

APT develops innovative therapies utilizing bacteriophages to combat multi-drug resistant infections, providing broad spectrum coverage where traditional antibiotics fail

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ Gaithersburg 50 2016
31
Leadiant Biosciences, Inc.leadiant.com

A rare disease pharmaceutical company focused on developing novel medicines to meet the unmet needs of patients with rare diseases

Pharmaceutical Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Rockville 45 n/a
32
MultiplexDX Internationalmultiplexdx.com

A global corporation focused on accurate cancer diagnosis, developing molecular diagnostic technologies, custom oligonucleotides, 3D digital pathology services, and improving breast cancer treatment outcomes

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ Rockville 44 2015
33
NexImmune, Inc.neximmune.com

A clinical-stage biotech company developing T cell immunotherapies using proprietary AIM technology, with a focus on treating AML and multiple myeloma

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ Gaithersburg 34 2011
34
movmedixmovmedix.com

A pioneering company in the sports medicine market, known for leading advancements in artificial ligaments and developing innovative solutions

Medical Equipment Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Arc Sur Tille 32 1992

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.

Build your own list, free

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.

More company lists in Maryland

The same list elsewhere in United States