| Company Name | City | State | Country/Region | Website | Service Type |
|---|---|---|---|---|---|
| ARC Medical Inc. | Richmond | British Columbia | Canada | arcmedicaldevices.com | Core Company |
| 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 |
| Arent Fox LLP | Washington | District of Columbia | United States | arentfox.com | Legal |
| ARIUS Research, Inc | Toronto | Ontario | Canada | ariusresearch.com | Core Subsidiary |
| Arizona BioIndustry Association | Chandler | Arizona | United States | azbio.org | State Affiliate |
| Arkayli Biopharma | Mount Airy | Maryland | United States | https://www.arkayli.com/ | Core Company |
| 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 | https://aronorabio.com/ | Core Company |
| Arrow Therapeutics, Ltd | London | United Kingdom | arrowt.co.uk | Core Subsidiary | |
| Artasome Therapeutics | Dover | Delaware | United States | Core Company | |
| ARTBIO, Inc. | Cambridge | Massachusetts | United States | Core Company | |
| Aruna Bio | Athens | Georgia | United States | arunabio.com | Core Company |
| Arzeda | Seattle | Washington | United States | arzeda.com | Core Company |
| AscellaHealth | Berwyn | Pennsylvania | United States | ascellahealth.com | Service Provider (SVCP) |
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