Company lists · Data refreshed September 2026
Top 20 Clinical stage biotech companies based in Waltham, United States
RevenueBase identified 25 company matches for clinical stage biotech companies associated with Waltham, United States as of September 2026 and tracks 23,620 professional contacts across them, including 11,933 with verified work emails. Across the United States, Cambridge is the largest hub for this category (96 companies); Waltham has 25.
This list covers company matches for clinical stage biotech companies associated with Waltham, United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 16, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 20 largest clinical stage biotech companies based in Waltham, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 20,530 contacts → | ||||
Exact match “The PPD™ clinical research business of Thermo Fisher Scientific, the world leader in serving science, enables customers to accelerate innovation and drug development through…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 2 | 823 contacts → | ||||
Exact match “Apellis is now part of Biogen.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 3 | 548 contacts → | ||||
Exact match “At AMAG, aiming higher is in our DNA.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 4 | 497 contacts → | ||||
Exact match “Ardelyx is a commercial-stage biopharmaceutical company focused on the development and commercialization of innovative medicines that meet significant unmet medical needs.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 5 | 326 contacts → | ||||
Exact match “Sobi is an international specialty healthcare company dedicated to developing treatments and extensive patient support networks for people with rare and difficult to treat…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 6 | 282 contacts → | ||||
Exact match “Viridian is a biopharmaceutical company focused on engineering and developing potential best-in-class medicines for patients with serious and rare diseases.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 7 | 101 contacts → | ||||
Exact match “At Ventus, we are pioneering a unique approach to structure-based drug discovery to address biologically validated, but difficult-to-drug targets.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 8 | 89 contacts → | ||||
Exact match “Xilio is a Waltham, Massachusetts-based clinical-stage biopharmaceutical company focused on defeating cancer.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 9 | 68 contacts → | ||||
Exact match “Skyhawk Therapeutics is a drug discovery and development company focused on revolutionizing disease treatment with small molecules that modify RNA expression.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 10 | 62 contacts → | ||||
Exact match “We are advancing verekitug, a clinical-stage monoclonal antibody targeting an upstream driver of inflammatory response.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 11 | 53 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 12 | 50 contacts → | ||||
Exact match “Orionis Biosciences is a life sciences company pioneering technological innovation in genome-scale drug discovery and tunable molecular design of novel therapeutic drug modalities.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 13 | 48 contacts → | ||||
Exact match “Crescent Biopharma’s vision is to build a world leading oncology company bringing the next wave of therapies for cancer patients.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 14 | 36 contacts → | ||||
Exact match “Sironax is a clinical-stage biotechnology company developing transformative therapies for neurodegenerative, inflammatory, immunologic, and metabolic diseases.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 15 | 29 contacts → | ||||
Exact match “Driven by science and passionate about advancing patient care, DynamiCure is translating breakthrough insights on immuno-normalization into a pipeline of innovative antibody…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 16 | 29 contacts → | ||||
Exact match “Immunitas is committed to discovering and developing novel, differentiated therapeutics for patients with cancer and autoimmune diseases.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 17 | 17 contacts → | ||||
Exact match “Checkpoint Therapeutics is revolutionizing the way novel treatments for cancer patients are developed.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 18 | 3 contacts → | ||||
Exact match “Accellient Partners is a fully integrated and dedicated team of drug development experts with broad drug development, regulatory and scientific experience.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 19 | 3 contacts → | ||||
Exact match “Blue Oak Pharmaceuticals is committed to finding the next generation of drugs for brain disorders.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 20 | 2 contacts → | ||||
Exact match “Where science is done” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “clinical stage biotech companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 20 of 25 clinical stage biotech companies based in Waltham, United States
See the full list, filter by size, metro and specialty, and access 11,933 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Clinical stage biotech companies based in Waltham, United States at a glance
As of Sep 16, 2026Companies by employee count
Email recency for this list is measured across the whole United States list rather than for Waltham, so it is reported there. Company counts and contact totals on this page are exact for Waltham, over 25 companies.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with Waltham, United States whose business descriptions match “clinical stage biotech companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- 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 displayed company carries at least one verified work email. RevenueBase tracks 11,933 professional contacts with verified work emails across the full matched dataset. 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 16, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Clinical stage biotech companies by metro in the United States
- Clinical stage biotech companies in Cambridge96
- Clinical stage biotech companies in San Diego96
- Clinical stage biotech companies in Boston86
- Clinical stage biotech companies in New York86
- Clinical stage biotech companies in San Francisco43
- Clinical stage biotech companies in South San Francisco40
- Clinical stage biotech companies in Houston33
- Clinical stage biotech companies in Chicago26
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “clinical stage biotech companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many clinical stage biotech companies are there based in Waltham, United States?
RevenueBase identified 25 company matches for clinical stage biotech companies associated with Waltham, United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
PPD tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city in the United States has the most clinical stage biotech companies?
Cambridge leads the United States with 96 company records, followed by San Diego (96) and Boston (86). Waltham has 25.
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 11,933 professional contacts with verified work emails tracked across these 25 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 16, 2026.
Ready to reach these companies? Verified emails and direct dials for all 25 clinical stage biotech companies based in Waltham, United States. Start with a free account, no credit card.
Download this list →Related lists
Clinical stage biotech companies by geography
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- Clinical stage biotech companies based in Mumbai, India
- Clinical stage biotech companies based in Boston, United States
- Clinical stage biotech companies based in Cambridge, United States
- Clinical stage biotech companies based in Chicago, United States
- Clinical stage biotech companies based in Houston, United States
- Clinical stage biotech companies based in New York, United States
- Clinical stage biotech companies based in San Diego, United States
- Clinical stage biotech companies based in San Francisco, United States
- Clinical stage biotech companies based in South San Francisco, United States
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 SmartSearch, 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
- Clinical stage biotech companies based in Ahmedabad, India
- Clinical stage biotech companies based in Bangalore, India
- Clinical stage biotech companies based in Hyderabad, India
- Clinical stage biotech companies based in Mumbai, India
- Clinical stage biotech companies based in Boston, United States
- Clinical stage biotech companies based in Cambridge, United States
Company intelligence · public preview
Top 20 clinical stage biotech companies based in Waltham, United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 25 matching company records for clinical stage biotech companies based in Waltham, United States, with 23,620 tracked contacts and 11,933 verified work emails.
This public preview shows 20 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 16, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 20 clinical stage biotech companies based in Waltham, United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  PPDppd.comHQ: Waltham, MA, United StatesReported employees: 10001+ | Waltham, MA, United States | 10001+ | Exact match | 20,530 contacts → |
“The PPD™ clinical research business of Thermo Fisher Scientific, the world leader in serving science, enables customers to accelerate innovation and drug development through…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Apellis Pharmaceuticalsapellis.comHQ: Waltham, MA, United StatesReported employees: 501-1,000 | Waltham, MA, United States | 501-1,000 | Exact match | 823 contacts → |
“Apellis is now part of Biogen.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Amag Pharmaceuticalsamagpharma.comHQ: Waltham, MA, United StatesReported employees: 201-500 | Waltham, MA, United States | 201-500 | Exact match | 548 contacts → |
“At AMAG, aiming higher is in our DNA.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Ardelyx, INCardelyx.comHQ: Waltham, MA, United StatesReported employees: 201-500 | Waltham, MA, United States | 201-500 | Exact match | 497 contacts → |
“Ardelyx is a commercial-stage biopharmaceutical company focused on the development and commercialization of innovative medicines that meet significant unmet medical needs.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  SOBIsobi-northamerica.comHQ: Waltham, MA, United StatesReported employees: 201-500 | Waltham, MA, United States | 201-500 | Exact match | 326 contacts → |
“Sobi is an international specialty healthcare company dedicated to developing treatments and extensive patient support networks for people with rare and difficult to treat…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Viridian Therapeutics, INCviridiantherapeutics.comHQ: Waltham, MA, United StatesReported employees: 201-500 | Waltham, MA, United States | 201-500 | Exact match | 282 contacts → |
“Viridian is a biopharmaceutical company focused on engineering and developing potential best-in-class medicines for patients with serious and rare diseases.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Ventus Therapeuticsventustx.comHQ: Waltham, MA, United StatesReported employees: 11-50 | Waltham, MA, United States | 11-50 | Exact match | 101 contacts → |
“At Ventus, we are pioneering a unique approach to structure-based drug discovery to address biologically validated, but difficult-to-drug targets.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Xilio Therapeutics, INCxiliotx.comHQ: Waltham, MA, United StatesReported employees: 51-200 | Waltham, MA, United States | 51-200 | Exact match | 89 contacts → |
“Xilio is a Waltham, Massachusetts-based clinical-stage biopharmaceutical company focused on defeating cancer.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Skyhawk Therapeuticsskyhawktx.com HQ: Waltham, MA, United StatesReported employees: 51-200 | Waltham, MA, United States | 51-200 | Exact match | 68 contacts → |
“Skyhawk Therapeutics is a drug discovery and development company focused on revolutionizing disease treatment with small molecules that modify RNA expression.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Upstream BIOupstreambio.comHQ: Waltham, MA, United StatesReported employees: 51-200 | Waltham, MA, United States | 51-200 | Exact match | 62 contacts → |
“We are advancing verekitug, a clinical-stage monoclonal antibody targeting an upstream driver of inflammatory response.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Paragon Therapeutics, INCparagontherapeutics.com HQ: Waltham, MA, United StatesReported employees: 11-50 | Waltham, MA, United States | 11-50 | Exact match | 53 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 12 |  Orionis Biosciencesorionisbio.comHQ: Waltham, MA, United StatesReported employees: 11-50 | Waltham, MA, United States | 11-50 | Exact match | 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.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Crescent Biopharmacrescentbiopharma.comHQ: Waltham, MA, United StatesReported employees: 51-200 | Waltham, MA, United States | 51-200 | Exact match | 48 contacts → |
“Crescent Biopharma’s vision is to build a world leading oncology company bringing the next wave of therapies for cancer patients.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Sironaxsironax.comHQ: Waltham, MA, United StatesReported employees: 51-200 | Waltham, MA, United States | 51-200 | Exact match | 36 contacts → |
“Sironax is a clinical-stage biotechnology company developing transformative therapies for neurodegenerative, inflammatory, immunologic, and metabolic diseases.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Dynamicure Biotechnologydynamicure.comHQ: Waltham, MA, United StatesReported employees: 11-50 | Waltham, MA, United States | 11-50 | Exact match | 29 contacts → |
“Driven by science and passionate about advancing patient care, DynamiCure is translating breakthrough insights on immuno-normalization into a pipeline of innovative antibody…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Immunitas Therapeuticsimmunitastx.comHQ: Waltham, MA, United StatesReported employees: 11-50 | Waltham, MA, United States | 11-50 | Exact match | 29 contacts → |
“Immunitas is committed to discovering and developing novel, differentiated therapeutics for patients with cancer and autoimmune diseases.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Checkpoint Therapeutics INCcheckpointtx.comHQ: Waltham, MA, United StatesReported employees: 11-50 | Waltham, MA, United States | 11-50 | Exact match | 17 contacts → |
“Checkpoint Therapeutics is revolutionizing the way novel treatments for cancer patients are developed.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Accellient Partners, LLCaccellient.comHQ: Waltham, MA, United StatesReported employees: 1-10 | Waltham, MA, United States | 1-10 | Exact match | 3 contacts → |
“Accellient Partners is a fully integrated and dedicated team of drug development experts with broad drug development, regulatory and scientific experience.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Blue OAK Pharmaceuticalsblueoakpharma.com HQ: Waltham, MA, United StatesReported employees: 1-10 | Waltham, MA, United States | 1-10 | Exact match | 3 contacts → |
“Blue Oak Pharmaceuticals is committed to finding the next generation of drugs for brain disorders.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  bioburst.iobioburst.ioHQ: Waltham, MA, United StatesReported employees: 1-10 | Waltham, MA, United States | 1-10 | Exact match | 2 contacts → |
“Where science is done” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 20 of 25 company matches
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Clinical stage biotech companies: dataset insights
September 16, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
25 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole United States list rather than for Waltham, so it is reported there. Company counts and contact totals on this page are exact for Waltham, over 25 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 16, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Clinical stage biotech companies by metro in the United States
- Clinical stage biotech companies in Cambridge96
- Clinical stage biotech companies in San Diego96
- Clinical stage biotech companies in Boston86
- Clinical stage biotech companies in New York86
- Clinical stage biotech companies in San Francisco43
- Clinical stage biotech companies in South San Francisco40
- Clinical stage biotech companies in Houston33
- Clinical stage biotech companies in Chicago26
Questions about this company list
What does Exact match mean for clinical stage biotech companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many clinical stage biotech companies did RevenueBase find based in Waltham, United States?
The saved snapshot records 25 matching company records, 23,620 tracked contacts and 11,933 verified emails. The public preview displays 20 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 16, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Clinical stage biotech companies by geography
- Clinical stage biotech companies based in Ahmedabad, India
- Clinical stage biotech companies based in Bangalore, India
- Clinical stage biotech companies based in Hyderabad, India
- Clinical stage biotech companies based in Mumbai, India
- Clinical stage biotech companies based in Boston, United States
- Clinical stage biotech companies based in Cambridge, United States
- Clinical stage biotech companies based in Chicago, United States
- Clinical stage biotech companies based in Houston, United States
- Clinical stage biotech companies based in New York, United States
- Clinical stage biotech companies based in San Diego, United States
- Clinical stage biotech companies based in San Francisco, United States
- Clinical stage biotech companies based in South San Francisco, United States
Cite this list
RevenueBase Data Team. Top 20 clinical stage biotech companies based in Waltham, United States. Snapshot: September 16, 2026. https://revenuebase.ai/companies/clinical-stage-biotech-companies/united-states/waltham.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Clinical stage biotech companies based in Ahmedabad, India
- Clinical stage biotech companies based in Bangalore, India
- Clinical stage biotech companies based in Hyderabad, India
- Clinical stage biotech companies based in Mumbai, India
- Clinical stage biotech companies based in Boston, United States
- Clinical stage biotech companies based in Cambridge, United States
Company intelligence · public preview
Top 20 clinical stage biotech companies based in Waltham, United States
RevenueBase records 25 matching company records for clinical stage biotech companies based in Waltham, United States, with 23,620 tracked contacts and 11,933 verified work emails.
This public preview shows 20 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 16, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 20 clinical stage biotech companies based in Waltham, United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | PPDppd.com HQ: Waltham, MA, United StatesReported employees: 10001+ | Waltham, MA, United States | 10001+ | Exact match | 20,530 contacts → |
“The PPD™ clinical research business of Thermo Fisher Scientific, the world leader in serving science, enables customers to accelerate innovation and drug development through…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Apellis Pharmaceuticalsapellis.com HQ: Waltham, MA, United StatesReported employees: 501-1,000 | Waltham, MA, United States | 501-1,000 | Exact match | 823 contacts → |
“Apellis is now part of Biogen.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Amag Pharmaceuticalsamagpharma.com HQ: Waltham, MA, United StatesReported employees: 201-500 | Waltham, MA, United States | 201-500 | Exact match | 548 contacts → |
“At AMAG, aiming higher is in our DNA.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Ardelyx, INCardelyx.com HQ: Waltham, MA, United StatesReported employees: 201-500 | Waltham, MA, United States | 201-500 | Exact match | 497 contacts → |
“Ardelyx is a commercial-stage biopharmaceutical company focused on the development and commercialization of innovative medicines that meet significant unmet medical needs.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | SOBIsobi-northamerica.com HQ: Waltham, MA, United StatesReported employees: 201-500 | Waltham, MA, United States | 201-500 | Exact match | 326 contacts → |
“Sobi is an international specialty healthcare company dedicated to developing treatments and extensive patient support networks for people with rare and difficult to treat…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Viridian Therapeutics, INCviridiantherapeutics.com HQ: Waltham, MA, United StatesReported employees: 201-500 | Waltham, MA, United States | 201-500 | Exact match | 282 contacts → |
“Viridian is a biopharmaceutical company focused on engineering and developing potential best-in-class medicines for patients with serious and rare diseases.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Ventus Therapeuticsventustx.com HQ: Waltham, MA, United StatesReported employees: 11-50 | Waltham, MA, United States | 11-50 | Exact match | 101 contacts → |
“At Ventus, we are pioneering a unique approach to structure-based drug discovery to address biologically validated, but difficult-to-drug targets.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Xilio Therapeutics, INCxiliotx.com HQ: Waltham, MA, United StatesReported employees: 51-200 | Waltham, MA, United States | 51-200 | Exact match | 89 contacts → |
“Xilio is a Waltham, Massachusetts-based clinical-stage biopharmaceutical company focused on defeating cancer.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Skyhawk Therapeuticsskyhawktx.com HQ: Waltham, MA, United StatesReported employees: 51-200 | Waltham, MA, United States | 51-200 | Exact match | 68 contacts → |
“Skyhawk Therapeutics is a drug discovery and development company focused on revolutionizing disease treatment with small molecules that modify RNA expression.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Upstream BIOupstreambio.com HQ: Waltham, MA, United StatesReported employees: 51-200 | Waltham, MA, United States | 51-200 | Exact match | 62 contacts → |
“We are advancing verekitug, a clinical-stage monoclonal antibody targeting an upstream driver of inflammatory response.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Paragon Therapeutics, INCparagontherapeutics.com HQ: Waltham, MA, United StatesReported employees: 11-50 | Waltham, MA, United States | 11-50 | Exact match | 53 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 12 | Orionis Biosciencesorionisbio.com HQ: Waltham, MA, United StatesReported employees: 11-50 | Waltham, MA, United States | 11-50 | Exact match | 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.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Crescent Biopharmacrescentbiopharma.com HQ: Waltham, MA, United StatesReported employees: 51-200 | Waltham, MA, United States | 51-200 | Exact match | 48 contacts → |
“Crescent Biopharma’s vision is to build a world leading oncology company bringing the next wave of therapies for cancer patients.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Sironaxsironax.com HQ: Waltham, MA, United StatesReported employees: 51-200 | Waltham, MA, United States | 51-200 | Exact match | 36 contacts → |
“Sironax is a clinical-stage biotechnology company developing transformative therapies for neurodegenerative, inflammatory, immunologic, and metabolic diseases.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Dynamicure Biotechnologydynamicure.com HQ: Waltham, MA, United StatesReported employees: 11-50 | Waltham, MA, United States | 11-50 | Exact match | 29 contacts → |
“Driven by science and passionate about advancing patient care, DynamiCure is translating breakthrough insights on immuno-normalization into a pipeline of innovative antibody…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Immunitas Therapeuticsimmunitastx.com HQ: Waltham, MA, United StatesReported employees: 11-50 | Waltham, MA, United States | 11-50 | Exact match | 29 contacts → |
“Immunitas is committed to discovering and developing novel, differentiated therapeutics for patients with cancer and autoimmune diseases.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Checkpoint Therapeutics INCcheckpointtx.com HQ: Waltham, MA, United StatesReported employees: 11-50 | Waltham, MA, United States | 11-50 | Exact match | 17 contacts → |
“Checkpoint Therapeutics is revolutionizing the way novel treatments for cancer patients are developed.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Accellient Partners, LLCaccellient.com HQ: Waltham, MA, United StatesReported employees: 1-10 | Waltham, MA, United States | 1-10 | Exact match | 3 contacts → |
“Accellient Partners is a fully integrated and dedicated team of drug development experts with broad drug development, regulatory and scientific experience.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Blue OAK Pharmaceuticalsblueoakpharma.com HQ: Waltham, MA, United StatesReported employees: 1-10 | Waltham, MA, United States | 1-10 | Exact match | 3 contacts → |
“Blue Oak Pharmaceuticals is committed to finding the next generation of drugs for brain disorders.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | bioburst.iobioburst.io HQ: Waltham, MA, United StatesReported employees: 1-10 | Waltham, MA, United States | 1-10 | Exact match | 2 contacts → |
“Where science is done” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 20 of 25 company matches
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Clinical stage biotech companies: dataset insights
September 16, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
25 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole United States list rather than for Waltham, so it is reported there. Company counts and contact totals on this page are exact for Waltham, over 25 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 16, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Clinical stage biotech companies by metro in the United States
- Clinical stage biotech companies in Cambridge96
- Clinical stage biotech companies in San Diego96
- Clinical stage biotech companies in Boston86
- Clinical stage biotech companies in New York86
- Clinical stage biotech companies in San Francisco43
- Clinical stage biotech companies in South San Francisco40
- Clinical stage biotech companies in Houston33
- Clinical stage biotech companies in Chicago26
Questions about this company list
What does Exact match mean for clinical stage biotech companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many clinical stage biotech companies did RevenueBase find based in Waltham, United States?
The saved snapshot records 25 matching company records, 23,620 tracked contacts and 11,933 verified emails. The public preview displays 20 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 16, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Clinical stage biotech companies by geography
- Clinical stage biotech companies based in Ahmedabad, India
- Clinical stage biotech companies based in Bangalore, India
- Clinical stage biotech companies based in Hyderabad, India
- Clinical stage biotech companies based in Mumbai, India
- Clinical stage biotech companies based in Boston, United States
- Clinical stage biotech companies based in Cambridge, United States
- Clinical stage biotech companies based in Chicago, United States
- Clinical stage biotech companies based in Houston, United States
- Clinical stage biotech companies based in New York, United States
- Clinical stage biotech companies based in San Diego, United States
- Clinical stage biotech companies based in San Francisco, United States
- Clinical stage biotech companies based in South San Francisco, United States
Cite this list
RevenueBase Data Team. Top 20 clinical stage biotech companies based in Waltham, United States. Snapshot: September 16, 2026. https://revenuebase.ai/companies/clinical-stage-biotech-companies/united-states/waltham.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
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- Clinical stage biotech companies based in Ahmedabad, India
- Clinical stage biotech companies based in Bangalore, India
- Clinical stage biotech companies based in Hyderabad, India
- Clinical stage biotech companies based in Mumbai, India
- Clinical stage biotech companies based in Boston, United States
- Clinical stage biotech companies based in Cambridge, United States