| Company Name | City | State | Country/Region | Website | Service Type |
|---|---|---|---|---|---|
| Shirley Diagnostics | Seattle | Washington | United States | shirleydiagnostics.com | Core Company |
| Sidewinder Therapeutics | San Diego | California | United States | www.sidewinderbio.com | Core Company |
| SIGA Pharmaceuticals, Inc | Corvallis | Oregon | United States | siga.com | Core Subsidiary |
| SIGA Technologies, Inc | New York | New York | United States | siga.com | Core Company |
| Sigilon Therapeutics, Inc. | Cambridge | Massachusetts | United States | sigilon.com | Core Company |
| Signal Bioscience | Ann Arbor | Michigan | United States | signalbioscience.com | Core Company |
| Signal Pharmaceuticals, Inc | Summit | New Jersey | United States | signalpharm.com | Core Subsidiary |
| Signal Research | San Diego | California | United States | signalpharm.com | Core Subsidiary |
| Similis Bio | Louisville | Colorado | United States | General Company | |
| SiNON Nano Sciences | Durham | North Carolina | United States | sinontx.com | Core Company |
| Sinopia Biosciences, Inc. | San Diego | California | United States | sinopiabio.com | Core Company |
| Sirna Therapeutics, Inc | San Francisco | California | United States | sirna.com | Core Subsidiary |
| SirnaMed Therapeutics Inc | Sewickley | Pennsylvania | United States | Core Company | |
| Siteone Therapeutics, Inc. | Bozeman | Montana | United States | siteonetherapeutics.com | Core Company |
| Skyhawk Therapeutics, Inc. | Waltham | Massachusetts | United States | skyhawktx.com | Biotechnology Company |
| SLAM BioTherapeutics | Westlake Village | California | United States | www.slambio.com | Core Company |
| SmartPractice Dermatology | Phoenix | Arizona | United States | www.smartpractice.com/dermatology | Core Company |
| SMSBiotech | San Marcos | California | United States | smsbiotech.com | Core Company |
| Sofinnova Investments | Menlo Park | California | United States | sofinnova.com | Investor/Venture Capital |
| Solaxa, Inc. | Bethesda | Maryland | United States | solaxa.com | Core Company |
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