Company lists · Data refreshed September 2026
Top 25 Biodefense companies based in the United States
RevenueBase identified 329 biodefense companies headquartered in the United States as of September 2026 and tracks 8,452 professional contacts across them, including 2,329 with verified work emails and 3,726 with mobile numbers. San Diego is the largest hub.
This list covers biodefense companies headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 6, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest biodefense companies based in the United States
Ranked by team size| # | Company | RevenueBase Smart Search | Contacts | ||
|---|---|---|---|---|---|
| 1 | Indirect evidence | 512 contacts → | |||
“At Vir Biotechnology, Inc, we leverage the immense potential of the immune system to transform lives by discovering and developing medicines for serious infectious diseases and…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 2 | Indirect evidence | 485 contacts → | |||
“Vaxcyte is a vaccine innovation company engineering high-fidelity vaccines to protect humankind from the consequences of bacterial diseases.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 3 | Indirect evidence | 227 contacts → | |||
“InBios is a leading biotechnology company based in Seattle, Washington (USA).” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 4 | Indirect evidence | 153 contacts → | |||
“Invivyd, Inc.(Nasdaq: IVVD) creates medicines that are more potent and resistant to virus evolution than the human immune system.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 5 | Indirect evidence | 149 contacts → | |||
“BioFire Defense is a proud member of the bioMérieux family, we play a critical role in helping to make the world a healthier place.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 6 | Indirect evidence | 141 contacts → | |||
“Alloy Therapeutics is a Product Development Organization dedicated to helping the global scientific community make better medicines together.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 7 | Indirect evidence | 138 contacts → | |||
“Integral Molecular is a research-driven biotechnology company specializing in antibodies, viruses, and membrane proteins.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 8 | Indirect evidence | 130 contacts → | |||
“At Inhibrx, our mission is to deliver optimized, biologic therapeutics to people with life-threatening conditions.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 9 | Indirect evidence | 121 contacts → | |||
“DynPort Vaccine Company LLC manages product development programs for U.S.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 10 | Indirect evidence | 119 contacts → | |||
“CAMRIS is a military medicine, clinical and life sciences, and research and development firm with experience working in more than 110 countries.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 11 | Indirect evidence | 115 contacts → | |||
“At InvivoGen, we strive to provide life scientists worldwide with innovative, high quality and reliable reagents.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 12 | Indirect evidence | 107 contacts → | |||
“Tunnell Consulting, Inc, has served the pharmaceutical industry as scientific and technical consultants for over 50 years.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 13 | Indirect evidence | 104 contacts → | |||
“Dren Bio is a San Carlos, CA based biotechnology company, developing power protein-based technologies to deplete pathogenic cells and agents in numerous diseases.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 14 | Indirect evidence | 101 contacts → | |||
“SIGA is a leader in global health, developing medicines to prevent and treat emerging infectious diseases with high unmet medical needs.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 15 | Indirect evidence | 93 contacts → | |||
“As a recognized leader in the Chemical and Biological Defense (CBD) community, we will continually strive to provide a distinguishably high level of innovative, proactive…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 16 | Indirect evidence | 85 contacts → | |||
“Medarex is a biopharmaceutical company focused on the discovery, development, and potential commercialization of fully human antibody-based therapeutics to treat life- threatening…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 17 | Indirect evidence | 68 contacts → | |||
“The OmniAb discovery platform provides pharmaceutical industry partners access to diverse antibody repertoires and high-throughput screening technologies to enable discovery of…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 18 | Indirect evidence | 61 contacts → | |||
“HDT Bio is a vaccine and immunotherapy Biotechnology company developing drugs for immunotherapy of cancers and infectious diseases with next-generation approaches designed to…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 19 | Indirect evidence | 52 contacts → | |||
“Prellis Bio is hiring Immunologists!” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 20 | Indirect evidence | 52 contacts → | |||
“GigaGen, a subsidiary of Grifols, is advancing transformative antibody drugs for immune deficiency, infectious diseases and checkpoint resistant cancers by leveraging…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 21 | Indirect evidence | 50 contacts → | |||
“Orionis Biosciences is a life sciences company pioneering technological innovation in genome-scale drug discovery and tunable molecular design of novel therapeutic drug modalities.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 22 | Indirect evidence | 47 contacts → | |||
“System Planning Corporation (SPC)’s success supporting U.S.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 23 | Indirect evidence | 46 contacts → | |||
“As a multinational antibody manufacturer, GeneTex’s primary goal is to provide bioscience researchers with thoroughly validated reagents to accelerate their discovery.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 24 | Indirect evidence | 43 contacts → | |||
“Cambium works at the interface of biotech and materials science to build next-generation defense products.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 25 | Indirect evidence | 42 contacts → | |||
“SecureBio is a pioneering biosecurity nonprofit, working to build a future that is secure against the threat of pandemic pathogens.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: biodefense companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names biodefense companies.
- Partial evidence
- Its own public description names part of biodefense companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name biodefense companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 329 biodefense companies based in the United States
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 2,329 reachable decision-makers.
Free signup · no credit card
Biodefense companies based in the United States at a glance
As of Sep 6, 2026Companies by employee count
Freshness & accuracy
How recently the business emails on this list were verified
Email last verified
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among biodefense companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in the United States whose own description of what they do matches “biodefense companies”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names biodefense companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among biodefense companies, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 2,329 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 6, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names biodefense companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many biodefense companies are there based in the United States?
RevenueBase identified 329 biodefense companies headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
VIR Biotechnology, INC, headquartered in San Francisco, tops this list with the largest team on record.
Which city has the most biodefense companies?
San Diego leads with 17 headquartered companies, followed by Frederick (10) and Boston (9).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 2,329 verified decision-maker contacts tracked across these 329 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 6, 2026.
Ready to reach these companies? Verified emails and direct dials for all 329 biodefense companies based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Biodefense companies by geography
Browse the directory
Browse: Companies home · All United States lists · All Biodefense companies lists · New lists
About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Biodefense companies based in the United Kingdom
- Biodefense companies based in Canada
- Biodefense companies based in France
- AI companies based in the United States
- Cybersecurity companies based in the United States
- Manufacturing companies based in the United States