Sierra Sciences Sierra Sciences is a biotech company that aims to extend the human lifespan and healthspan through telomere maintenance. | ![]() Mustang Bio Mustang Bio is a clinical-stage biopharmaceutical company that specializes in the development of cell and gene therapies. | ||
Founding Date | Founding Date 1999 | Founding Date 2015 | Founding Date 2017 |
Type | Type Private | Type Public | Type Public |
Tags | |||
Locations | Locations Reno, US HQ | Locations Worcester, US HQ | Locations Cambridge, US HQ |
Employees | Employees 20 | Employees 693% decrease | Employees 60 |
Valuation ($) | Valuation ($) N/A | Valuation ($) 11.2 m | Valuation ($) 68.4 m |
Financial | |||
Net income | Net income N/A | Net income ($1.9m) (FY, 2025) | Net income ($97.4m) (FY, 2023) |

Mustang Bio is a clinical-stage biopharmaceutical company that specializes in the development of cell and gene therapies.
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