Company lists · Data refreshed September 2026
Top 25 Oncolytic virus therapy companies based in the United States
RevenueBase identified 139 oncolytic virus therapy companies headquartered in the United States as of September 2026 and tracks 4,417 professional contacts across them, including 2,476 with verified work emails. San Diego is the largest hub.
This list covers oncolytic virus therapy 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 20, 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 oncolytic virus therapy companies based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,426 contacts → | ||||
Indirect evidence “Every Exelixis employee is united in an ambitious cause: to transform science into new treatments that give cancer patients and their families hope for the future.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 2 | 479 contacts → | ||||
Partial evidence “Replimune's mission is to revolutionize cancer treatment with therapies designed to activate a powerful and durable full-body anti-tumor response.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 3 | 167 contacts → | ||||
Partial evidence “Nkarta is a clinical-stage biotechnology company advancing the development of allogeneic natural killer (NK) cell therapies.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 4 | 149 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 5 | 120 contacts → | ||||
Partial evidence “A2 Biotherapeutics (A2 Bio) is a clinical-stage biotechnology company developing first-in-class logic-gated cell therapies to address the high unmet need in cancers and other…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 6 | 113 contacts → | ||||
Indirect evidence “TriSalus Life Sciences is an oncology company integrating novel delivery technology with immunotherapy to transform treatment for patients with liver and pancreatic tumors.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 7 | 112 contacts → | ||||
Indirect evidence “Our mission at Erasca is embedded in our name: To erase cancer.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 8 | 100 contacts → | ||||
Indirect evidence “enGene (Nasdaq: ENGN) is a clinical-stage biotechnology company mainstreaming non-viral genetic medicines that can be delivered locally to the site of disease-starting with…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 9 | 89 contacts → | ||||
Indirect evidence “Xilio is a Waltham, Massachusetts-based clinical-stage biopharmaceutical company focused on defeating cancer.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 10 | 77 contacts → | ||||
Partial evidence “Curis is a publicly-traded biotechnology company (NASDAQ: CRIS) focused on the development of first-in-class and innovative therapeutics or the treatment of cancer.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 11 | 75 contacts → | ||||
Indirect evidence “At HOOKIPA, we envision a world in which cancers and infectious diseases can be chronically managed or eradicated.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 12 | 70 contacts → | ||||
Indirect evidence “Candel ($CADL) is a clinical stage biopharmaceutical company focused on developing off-the-shelf multimodal biological immunotherapies that elicit an individualized, systemic…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 13 | 48 contacts → | ||||
Indirect evidence “GenVivo was founded on the idea that we can effectively treat cancer patients with the latest gene delivery technologies.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 14 | 42 contacts → | ||||
Indirect evidence “CEL-SCI believes that boosting a patient’s immune system while it is still intact should provide the greatest possible impact on survival.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 15 | 39 contacts → | ||||
Indirect evidence “NantKwest (NASDAQ: NK) is a pioneering, next generation, clinical-stage immunotherapy company focused on harnessing the unique power of our immune system using natural killer (NK)…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 16 | 37 contacts → | ||||
Partial evidence “KaliVir Immunotherapeutics was founded in 2019 to pioneer a unique and novel approach to cancer treatment that engages a virus’ natural ability to replicate in and kill cancer…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 17 | 32 contacts → | ||||
Partial evidence “3T is an immunotherapy company developing next-generation, transformative therapies for the treatment of solid tumors and other immune-mediated diseases in broad patient…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 18 | 30 contacts → | ||||
Strong evidence “Calidi Biotherapeutics is developing a new modality in cancer treatment through its proprietary RedTail platform, designed for systemic delivery of modified oncolytic viruses with…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 19 | 29 contacts → | ||||
Indirect evidence “Imvax is a clinical-stage biotechnology company developing personalized, whole tumor-derived immunotherapies.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 20 | 29 contacts → | ||||
Partial evidence “AlloVir, formerly ViraCyte, was founded in 2013 and is the leader in the development of novel cell therapies with a focus on restoring natural immunity against life-threatening…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 21 | 29 contacts → | ||||
Indirect evidence “IN8bio, Inc.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 22 | 28 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 23 | 28 contacts → | ||||
Indirect evidence “At Sapience, we think boldly about the possibilities for treating cancer.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 24 | 28 contacts → | ||||
Partial evidence “Calithera Biosciences is a clinical-stage biopharmaceutical company pioneering the discovery and development of targeted therapies that disrupt cellular metabolic pathways to…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 25 | 27 contacts → | ||||
Indirect evidence “Tevogen Bio brings together a highly skilled team of preeminent scientists, senior biopharmaceutical leaders, and manufacturing experts with the goal of advancing global health.” Source: RevenueBase Database · checked Sep 20, 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: oncolytic virus therapy 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 oncolytic virus therapy companies.
- Partial evidence
- Its own public description names part of oncolytic virus therapy companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name oncolytic virus therapy 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 139 oncolytic virus therapy companies based in the United States
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Oncolytic virus therapy companies based in the United States at a glance
As of Sep 20, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 139 companies.
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 oncolytic virus therapy 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 “oncolytic virus therapy 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 oncolytic virus therapy 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 oncolytic virus therapy 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, 2,476 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 20, 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 oncolytic virus therapy 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 oncolytic virus therapy companies are there based in the United States?
RevenueBase identified 139 oncolytic virus therapy 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?
Exelixis, headquartered in Alameda, tops this list with the largest team on record.
Which city has the most oncolytic virus therapy companies?
San Diego leads with 15 headquartered companies, followed by New York (9) and Philadelphia (7).
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 2,476 verified decision-maker contacts tracked across these 139 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 20, 2026.
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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.
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