Tesaro
| Company type | Subsidiary | 
|---|---|
| Industry | Pharmaceuticals | 
| Founded | 2010, in Waltham, Massachusetts | 
| Headquarters | , United States  | 
| Products | Varubi | 
| Number of employees | 286 (2016) | 
| Parent | GSK (2019–present) | 
| Website | tesarobio | 
Tesaro Inc. is a pharmaceutical company based in Waltham, Massachusetts. They focus on drug development for cancer.