Company lists · Data refreshed September 2026

Top 13 Biotech contract development organizations based in Houston, United States

RevenueBase identified 26 biotech contract development organizations headquartered in Houston, United States as of September 2026 and tracks 1,016 professional contacts across them, including 240 with verified work emails. San Diego is the largest hub.

This list covers biotech contract development organizations headquartered in Houston, 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 16, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 16, 2026 86% judged on-target in blind review
26Companies
1,016Contacts tracked
240Verified emails
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The 13 largest biotech contract development organizations based in Houston, United States

Ranked by team size
Top 13 of 26 biotech contract development organizations based in Houston, United States, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to biotech contract development organizations: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceHouston, TX, United StatesHQ checked Sep 16, 2026501-1,000561 contacts →

Indirect evidence

“Pharm-Olam is now Allucent.”

Source: RevenueBase Database · checked Sep 16, 2026
2Indirect evidenceHouston, TX, United StatesHQ checked Sep 16, 2026201-50059 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 16, 2026
3Partial evidenceHouston, TX, United StatesHQ checked Sep 16, 202651-20057 contacts →

Partial evidence

“Avance Biosciences is a leading Contract Research Organization (CRO) and Contract Testing Organization (CTO) providing CGMP and GLP-compliant analytical and bioanalytical services…”

Source: RevenueBase Database · checked Sep 16, 2026
4Indirect evidenceHouston, TX, United StatesHQ checked Sep 16, 202651-20045 contacts →

Indirect evidence

“Proxima CRO works with the new class of rising stars in drugs, devices, diagnostics and digital therapeutics.”

Source: RevenueBase Database · checked Sep 16, 2026
5Indirect evidenceHouston, TX, United StatesHQ checked Sep 16, 202651-20026 contacts →

Indirect evidence

“CEBIS, a full-service CRO headquartered in Houston, Texas, will provide a comprehensive integrated solution for clinical research (including start-up to CSR, phase I to IV)…”

Source: RevenueBase Database · checked Sep 16, 2026
6Indirect evidenceHouston, TX, United StatesHQ checked Sep 16, 202651-20025 contacts →

Indirect evidence

“CellReady is specifically designed to cut two years, and millions of dollars, off the path that cell and gene therapy (CGT) companies take to acquire the meaningful clinical…”

Source: RevenueBase Database · checked Sep 16, 2026
7Partial evidenceHouston, TX, United StatesHQ checked Sep 16, 202611-5014 contacts →

Partial evidence

“K2bio is a Preclinical Contract Research Organization (CRO) located in Houston Texas.”

Source: RevenueBase Database · checked Sep 16, 2026
8Partial evidenceHouston, TX, United StatesHQ checked Sep 16, 202611-506 contacts →

Partial evidence

“Trialwise is a woman-owned, boutique contract research organization (CRO) specializing in early phase clinical studies and niche consulting.”

Source: RevenueBase Database · checked Sep 16, 2026
9Partial evidenceHouston, TX, United StatesHQ checked Sep 16, 202611-504 contacts →

Partial evidence

“Precision is the first global precision medicine clinical research services organization, purpose-built to improve the clinical research and development process for new…”

Source: RevenueBase Database · checked Sep 16, 2026
10Partial evidenceHouston, TX, United StatesHQ checked Sep 16, 20261-104 contacts →

Partial evidence

“At Accelsobio we understand that emerging Biotech & MedTech companies have unique needs, and one-size-fits-all solutions won't cut it.”

Source: RevenueBase Database · checked Sep 16, 2026
11Indirect evidenceHouston, TX, United StatesHQ checked Sep 16, 20261-103 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 16, 2026
12Strong evidenceHouston, TX, United StatesHQ checked Sep 16, 20261-101 contacts →

Strong evidence

“Introducing Etcetera BioProcess Services, LLC: Serving the biopharmaceutical, biotechnology, biologics and supporting industries by providing quality contract and consulting…”

Source: RevenueBase Database · checked Sep 16, 2026
13Partial evidenceHouston, United StatesHQ checked Sep 16, 20261-101 contacts →

Partial evidence

“bioTsys Consulting provides facilities, manufacturing, operations, and technical writing consultation services to companies in biotech, life sciences and medical…”

Source: RevenueBase Database · checked Sep 16, 2026

Showing 13 of 26 biotech contract development organizations based in Houston, United States

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Biotech contract development organizations based in Houston, United States at a glance

As of Sep 16, 2026
23.6%Verified-email coverage
39.1Average contacts per company
11-50Median size (employees)
488.5%Largest-city concentration · San Diego
Sep 16, 2026Page data refreshed

Companies by employee count

1-10
12
11-50
6
51-200
5
201-500
1
501-1,000
2

Email recency for this list is measured across the whole United States list rather than for Houston, so it is reported there. Company counts and contact totals on this page are exact for Houston, over 26 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 biotech contract development organizations, 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 Houston, United States whose own description of what they do matches “biotech contract development organizations”. 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 biotech contract development organizations), 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 biotech contract development organizations, and records with no verified work email. Companies headquartered outside Houston 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, 240 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 16, 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 biotech contract development organizations, 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 biotech contract development organizations are there based in Houston, United States?

RevenueBase identified 26 biotech contract development organizations headquartered in Houston, 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?

Pharm-Olam, LLC, headquartered in Houston, tops this list with the largest team on record.

Which city has the most biotech contract development organizations?

San Diego leads with 127 headquartered companies, followed by Boston (78) and Cambridge (47).

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 240 verified decision-maker contacts tracked across these 26 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 16, 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.