| Company Name | City | State | Country/Region | Website | Service Type |
|---|---|---|---|---|---|
| Ocera Therapeutics, Inc | Palo Alto | California | United States | oceratherapeutics.com | Core Subsidiary |
| OCMS Bio, LLC | Doylestown | Pennsylvania | United States | ocms.bio | Core Company |
| Ocugen, Inc. | Malvern | Pennsylvania | United States | https://ocugen.com | Core Company |
| ODDIFACT | Paris | France | oddifact.com | Core Company | |
| ODP Business Solutions | Boca Raton | Florida | United States | officedepot.com | BBS Vendor |
| Office of The Premier of Victoria | Melbourne | Victoria | Australia | premier.vic.gov.au | Domestic Government |
| Ohio Life Sciences | Columbus | Ohio | United States | https://ohiolifesciences.org | State Affiliate |
| Ohm Laboratories Inc | New Brunswick | New Jersey | United States | General Company | |
| Okairos AG | Basel | Switzerland | okairos.com | Core Subsidiary | |
| Okanagan Specialty Fruits Inc. | Summerland | British Columbia | Canada | okspecialtyfruits.com | Core Company |
| Olema Oncology | San Francisco | California | United States | olema.com | Core Company |
| Oligomerix, Inc. | Rye | New York | United States | oligomerix.com | Core Company |
| Ology Bioservices, Inc | Alachua | Florida | United States | ologybio.com | Core Company |
| Omeros Corporation | Seattle | Washington | United States | omeros.com | Core Company |
| OmniPulse BioSciences | Cambridge | Massachusetts | United States | omnipulsebio.com | Core Company |
| Oncoceutics, Inc. | Philadelphia | Pennsylvania | United States | oncoceutics.com | Core Company |
| OncoImmune, Inc. | Rockville | Maryland | United States | oncoimmune.com | Core Company |
| ONL Therapeutics, Inc. | Ann Arbor | Michigan | United States | onltherapeutics.com | Core Company |
| Oorja Bio | Houston | Texas | United States | oorjabio.com | Core Company |
| Opus Genetics | Farmington | Michigan | United States | ocuphire.com | Core Company |
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