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The 34 largest Biotechnology Research companies in San Diego

Tamtam tracks 34 Biotechnology Research companies headquartered in San Diego. This list ranks all of them by number of employees on LinkedIn, led by Illumina, Neurocrine Biosciences and BioLegend. Their median headcount is 250. Half of them were founded in 2007 or later.

๐Ÿ‡บ๐Ÿ‡ธ San Diego34 companiesUpdated Oct 9, 2026
#CompanyIndustryHeadquarters EmployeesFounded
1
Illuminaillumina.com

The company develops innovative technologies and assays for genetic analysis, enabling personalized medicine and advancing disease research, drug development, and molecular testing

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ San Diego 9,673 1998
2
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

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ San Diego 2,378 1992
3
BioLegendbiolegend.com

Developing cutting-edge antibodies, proteins, and bioassays for biomedical research, offering superior products, customer service, and support Revolutionizing healthcare solutions and technologies globally

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ San Diego 660 n/a
4
ImmunityBio, Inc.immunitybio.com

Developing innovative cell and immunotherapy products to strengthen the immune system, target cancer and infectious diseases, and create immunological memory for long-term defense

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ San Diego 653 2014
5
Crown Biosciencecrownbio.com

A global CRO specializing in oncology research, offering preclinical platforms, tumor organoid services, PDX models, biomarker analysis, and genomics services to optimize drug development

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ San Diego 566 2006
6
Halozyme, Inc.halozyme.com

Develop enzyme technology enhancing drug delivery, reducing treatment times, partnering with pharma companies to improve patient outcomes globally.

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ San Diego 536 n/a
7
Travere Therapeuticstravere.com

Specializing in rare disease therapies, we aim to identify, develop, and provide life-changing treatments for those affected #InRareForLife

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ San Diego 507 2020
8
GNFgnf.org

A cutting-edge research institute focusing on biomedical problems using technologies such as genomics, proteomics, and high throughput screening in various disease areas

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ San Diego 494 1999
9
Avidity Biosciences, Inc.aviditybiosciences.com

The company utilizes a proprietary platform to develop RNA therapeutics that target genetic drivers of diseases, aiming to revolutionize therapy delivery

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ San Diego 447 2013
10
Element Bioscienceselementbiosciences.com

A life science company developing disruptive DNA sequencing and multiomics technology to empower researchers with affordable, high-quality data

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ San Diego 445 2017
11
Technical Safety Servicestechsafety.com

A leading provider of compliance, calibration, and certification services for laboratories, hospitals, and pharmacies across the United States

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ San Diego 424 1970
12
Cue Healthcuehealth.com

Healthcare technology company empowering individuals to take control of their health with personalized diagnostics, real-time information, and at-home COVID-19 testing

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ San Diego 380 2010
13
Prometheus Laboratories Inc.prometheuslabs.com

Prometheus Laboratories Inc develops and markets diagnostic tests for gastroenterology, enabling precision healthcare solutions and future growth through innovation

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ San Diego 324 n/a
14
Cibuscibus.com

A technology company using gene editing to develop high-value plant traits for major crops, improving yields and sustainability in agriculture

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ San Diego 317 2001
15
Kura Oncology, Inc.kuraoncology.com

A clinical-stage biopharmaceutical company developing small-molecule drug candidates targeting signaling pathways to improve outcomes for cancer patients

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ San Diego 315 2014
16
Vicalvical.com

Biopharmaceutical company based in San Diego developing innovative therapies for infectious diseases using patented DNA delivery technologies Partnering with industry leaders Website: wwwvicalcom

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ San Diego 308 1987
17
TriLink BioTechnologies, part of Maravai LifeSciencestrilinkbiotech.com

Global leader, nucleic acid and mRNA solutions, delivering chemical and biological expertise, CDMO services, high-quality materials including patented CleanCap mRNA capping technology for pharmaceutical and biotech.

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ San Diego 250 1996
18
Inova Diagnostics, A Werfen Companyinovadx.com

A leader in autoimmune technologies, Inova Diagnostics develops and manufactures IVD systems and reagents for diagnosis and monitoring of complex disorders worldwide

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ San Diego 249 1987
19
Calibre Scientific Groupcalibrescientific.com

Global provider of life science products & services for lab research, diagnostics, & biopharmaceuticals through acquisitions & organic growth, serving customers in 175+ countries

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ San Diego 248 2016
20
Genogenomatica.com

Accelerates world's transformation to sustainable materials, replacing fossil fuels with plants. Creates molecules, ingredients, materials from sustainable sources. Powers high-performance for brands.

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ San Diego 232 2000
21
Fate Therapeutics Inc.fatetherapeutics.com

Developing off-the-shelf, iPSC-derived cell products for cancer and autoimmune diseases, including T-cell and natural killer cell immunotherapies with synthetic controls.

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ San Diego 225 2007
22
Biotixbiotix.com

A global leader in manufacturing laboratory consumables and liquid handling solutions, dedicated to providing innovative products for researchers worldwide

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ San Diego 202 n/a
23
Bionanobionano.com

Innovative genomic company advancing cancer research, bioengineering, and genome discovery with cutting-edge mapping and analysis tools for improved genome structure understanding

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ San Diego 175 2003
24
Samumed, LLCsamumed.com

Leader in medical research for tissue regeneration, specializing in small molecule-based therapeutics for degenerative diseases, regenerative medicine, and oncology

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ San Diego 170 n/a
25
Singular Genomicssingulargenomics.com

A leader in multiomics, specializing in advanced NGS and multiomic technologies, offering innovative products for researchers and clinicians with rapid turnaround times

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ San Diego 161 2016
26
Iambiciambic.ai

Innovative AI-driven drug discovery platform with a world-class team creating clinically validated therapeutics quickly to address urgent patient needs

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ San Diego 159 2020
27
Arcturus Therapeuticsarcturusrx.com

Develops messenger RNA medicines for liver and respiratory rare diseases, utilizing LUNARยฎ delivery, STARRยฎ mRNA technology, and manufacturing expertise for various RNA therapeutics.

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ San Diego 155 2013
28
Gossamer Biogossamerbio.com

San Diego-based biopharmaceutical company developing seralutinib for pulmonary arterial hypertension, with a focus on enhancing the lives of those affected

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ San Diego 151 2017
29
Agena Bioscienceagenabio.com

Advancing genomics in healthcare with mass spectrometry platform for cancer profiling, genetic testing, pharmacogenetics, and clinical research globally

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ San Diego 151 n/a
30
Artiva Biotherapeuticsartivabio.com

Immunotherapy company producing allogeneic NK cell therapies at scale for autoimmune diseases and cancers, focusing on enhancing monoclonal antibody activity

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ San Diego 108 2019
31
Poseida Therapeutics, Inc.poseida.com

Clinical-stage biopharmaceutical company advancing allogeneic cell therapies and genetic medicines with capacity to cure, utilizing proprietary genetic editing platforms and manufacturing.

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ San Diego 81 2014
32
NanogenNanogen.com

Develops diagnostic products for improved patient care, focusing on cardiovascular disease and infectious diseases with molecular diagnostic kits and rapid test kits for point-of-care use

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ San Diego 74 1993
33
Althea, CMOaltheacmo.com

Contract development and manufacturing organization for process development, drug substance, and drug product manufacturing, including formulation and aseptic fill finish.

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ San Diego 72 1998
34
OZ Biosciencesozbiosciences.com

Product development company specializing in advanced delivery systems for bioactive materials such as DNA, siRNA, proteins, and antibodies to accelerate scientific discoveries

Biotechnology Research ๐Ÿ‡บ๐Ÿ‡ธ San Diego 22 2003

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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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