| Company Name | City | State | Country/Region | Website | Service Type |
|---|---|---|---|---|---|
| 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 Pharmaceuticals, Inc | Summit | New Jersey | United States | signalpharm.com | Core Subsidiary |
| Signal Research | San Diego | California | United States | signalpharm.com | Core Subsidiary |
| Sirna Therapeutics, Inc | San Francisco | California | United States | sirna.com | Core Subsidiary |
| Siteone Therapeutics, Inc. | Bozeman | Montana | United States | siteonetherapeutics.com | Core Company |
| SLAM BioTherapeutics | Westlake Village | California | United States | slambio.com | Core Company |
| SmartFem Biotech | Ashford | South Australia | Australia | smartfembiotech.com | Core Company |
| SmartPractice Dermatology | Phoenix | Arizona | United States | 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 |
| Soleno Therapeutics, Inc. | Redwood City | California | United States | soleno.life | Core Company |
| Solid Biosciences Inc. | Charlestown | Massachusetts | United States | solidbio.com | Core Company |
| Soligenix, Inc. | Princeton | New Jersey | United States | soligenix.com | Core Company |
| South Dakota Biotech Association | Sioux Falls | South Dakota | United States | sdbio.org | State Affiliate |
| Southern California Biomedical Council | Los Angeles | California | United States | socalbio.org | State Affiliate |
| Spark Therapeutics | Philadelphia | Pennsylvania | United States | sparktx.com | Core Company |
| Sparrow Pharmaceuticals, Inc. | Portland | Oregon | United States | sparrowpharma.com | Core Company |
| Specialised Therapeutics | East Kew | Australia | specialisedtherapeutics.com.au | Core Company |
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