Sierra Sciences
| Company type | Privately held | 
|---|---|
| Industry | Biotechnology | 
| Founded | 1999 | 
| Headquarters | Reno, Nevada | 
| Key people | William H. Andrews: Founder, President and CEO; Richard Offerdahl: Co-Chairman of the Board and COO; Pierluigi Zappacosta: Co-Chairman of the Board and Vice President, Business Development | 
| Website | sierrasci | 
Sierra Sciences, LLC is a biotechnology company founded by William H. Andrews, former director of molecular biology at Geron Corporation. Andrews founded Sierra Sciences in 1999 in Reno, Nevada, with the goal of preventing and/or reversing cellular senescence, and ultimately curing diseases associated with human aging, including the aging process itself.