Semma Therapeutics
AcquiredCambridge, United States · Founded 2014
- Headquarters
- Cambridge, Massachusetts
- Employees
- 11–50
- Founded
- 2014
- Business Model
- B2B
- Website
- semmatherapeutics.com
- Last Round
- Series BNov 2017
- Rounds
- 2
- Acquisition Date
- Sep 2019
About
Semma Therapeutics was a Cambridge, Massachusetts-based biotechnology company founded in 2014 by Harvard stem cell biologist Douglas Melton. The company pioneered the use of stem cell-derived human islets as a potentially curative treatment for type 1 diabetes. Semma raised $158 million before being acquired by Vertex Pharmaceuticals in 2019 for $950 million.
Summary
Semma Therapeutics is a Biotech company based in Cambridge, United States, founded in 2014. Its most recent funding was a Series B round in Nov 2017. Investors include MPM Capital, Vertex Pharmaceuticals and Eight Roads Ventures.
Funding History
Sep 2019
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Full funding history, per-round amounts, and investor participation.
Investors

MPM Capital
2 rounds
Vertex Pharmaceuticals
1 round
Eight Roads Ventures
1 round
Cowen Healthcare Investments
1 round

ARCH Venture Partners
2 rounds
Medtronic
2 rounds
F-Prime Capital
1 round
SinoPharm
1 round
ORI Healthcare Fund
1 round
Wu Capital
1 round
6 Dimensions Capital
1 round

Novartis Venture Fund
1 round
Fidelity Biosciences
1 round
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