| Company Name | City | State | Country/Region | Website | Service Type |
|---|---|---|---|---|---|
| Charles River Laboratories International | Wilmington | Massachusetts | United States | www.criver.com | Contract Research Organization |
| Checkmate Pharmaceuticals, Inc. | Cambridge | Massachusetts | United States | checkmatepharma.com | Core Company |
| Checkpoint Therapeutics, Inc. | New York | New York | United States | General Company | |
| ChemoCentryx, Inc | Mountain View | California | United States | chemocentryx.com | Core Company |
| ChemoGenics Biopharma, LLC | Durham | North Carolina | United States | chemogenicsbiopharma.com | Core Company |
| Chiasma, Inc. | Waltham | Massachusetts | United States | chiasma.com | Core Company |
| Chicago Biomedical Consortium | Evanston | Illinois | United States | https://www.chicagobiomedicalconsortium.org/ | General Company |
| Chiesi Brazil | São Paulo | Brazil | chiesi.com.br | General Company | |
| Chiesi Farmaceutici SpA | Boston | Massachusetts | United States | chiesigroup.com | Core Company |
| Chiesi Global Rare Diseases | Boston | Massachusetts | United States | General Company | |
| Chiesi Italy | Parma | Italy | General Company | ||
| Chiesi Pharmaceuticals, Inc | Malvern | Pennsylvania | United States | chiesigroup.com | General Company |
| Chiesi USA, Inc. | Cary | North Carolina | United States | chiesi.com | Core Subsidiary |
| Chiltern International Limited | Mexico City | Mexico | chiltern.com | Non-Core Subsidiary | |
| Chimerix, Inc | Durham | North Carolina | United States | chimerix.com | Core Company |
| Choate, Hall & Stewart LLP | Boston | Massachusetts | United States | choate.com | Legal |
| Chrysalis Services, LLC | Burlington | Massachusetts | United States | chrysalisgxp.com | Contract Manufacturing Organization |
| CHUBB | Whitehouse Station | New Jersey | United States | https://www.chubb.com | BBS Vendor |
| Chugai Pharma USA | Berkeley Heights | New Jersey | United States | chugai-pharm.com | Core Subsidiary |
| Chugai Pharmaceutical Co., Ltd. | Gotemba | Japan | https://www.chugai-pharm.co.jp/english/ | Core Subsidiary |
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