| Company Name | City | State | Country/Region | Website | Service Type |
|---|---|---|---|---|---|
| Archon Biosciences, Inc. | Seattle | Washington | United States | in stealth mode | Core Company |
| Arcus Biosciences, Inc | Hayward | California | United States | arcusbio.com | Core Company |
| Arcutis Biotherapeutics, Inc. | Westlake Village | California | United States | arcutis.com | Core Company |
| Ardea Biosciences, Inc | Palo Alto | California | United States | ardeabiosciences.com | Core Subsidiary |
| Ardelyx Inc. | Fremont | California | United States | ardelyx.com | Core Company |
| Ares Capital | New York | New York | United States | aresmgmt.com | Investor/Venture Capital-BIC |
| Argenta Discovery | Essex | United Kingdom | argentadiscovery.com | Contract Research Organization | |
| ARIUS Research, Inc | Toronto | Ontario | Canada | ariusresearch.com | Core Subsidiary |
| Arizona BioIndustry Association | Phoenix | Arizona | United States | azbio.org | State Affiliate |
| Armatus Bio | Columbus | Ohio | United States | armatusbio.com | Core Company |
| ARMO Biosciences | San Francisco | California | United States | General Company | |
| Arnold & Porter Kaye Scholer LLP | Washington | District of Columbia | United States | aporter.com | Legal |
| Aronora, Inc. | Portland | Oregon | United States | aronorabio.com | Core Company |
| Arrow Therapeutics, Ltd | London | United Kingdom | arrowt.co.uk | Core Subsidiary | |
| ARTBIO, Inc. | Cambridge | Massachusetts | United States | artbio.com | Core Company |
| Ashvattha Therapeutics, Inc. | Redwood City | California | United States | ashvatthatherapeutics.com | Core Company |
| Asklepion Pharmaceuticals, LLC | Baltimore | Maryland | United States | asklepionpharm.com | Core Company |
| Asklepios BioPharmaceutical, Inc. (AskBio) | Durham | North Carolina | United States | askbio.com | Core Company |
| Aspa Therapeutics, Inc. | Palo Alto | California | United States | aspatx.com/ | General Company |
| Assembly Biosciences | South San Francisco | California | United States | assemblybio.com | Core Company |
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