# Shannon Nangle

> Shannon Nangle is a microbe-wrangling scientist turned CEO who co-founded Circe Bioscience to make fats, oils, and even chocolate out of thin air. Her company feeds carbon dioxide, water, and electricity to engineered microbes that grow like plants and excrete valuable molecules, producing food and industrial ingredients in a carbon-negative way. Spun out of Harvard's Wyss Institute in 2021, Circe made what it calls the world's first gas-fermentation-derived chocolate and has raised over $17 million to scale a manufacturing process Nangle spent six years building.

- **Role:** Co-founder & CEO at Circe Bioscience
- **Organizations:** Circe Bioscience, Wyss Institute at Harvard University, Harvard Medical School, University of Washington
- **Nationality:** American
- **Education:** PhD, structural biology / crystallography of protein complexes, University of Washington, Postdoctoral Fellow, Harvard Medical School (Pam Silver Lab)
- **Known for:** MIT Technology Review Innovator Under 35 (2022), Co-founded Circe Bioscience, a carbon-negative manufacturing company, Created what Circe calls the world's first gas-fermentation-derived chocolate

## Career timeline

- **2016** — Begins postdoctoral fellowship in Pam Silver's lab at Harvard Medical School / Wyss Institute
- **2021** — Co-founds Circe Bioscience with Marika Ziesack, spinning the technology out of the Wyss Institute; both named Activate Fellows
- **2021** — Circe awarded $3.2M from the US Department of Energy ARPA-E ECOSynBio program
- **2022** — Named MIT Technology Review Innovator Under 35
- **2024** — Circe licenses Wyss Institute gas-fermentation technology; produces what it calls the world's first gas-fermentation-derived chocolate

## Achievements

- MIT Technology Review Innovator Under 35 (2022)
- Co-founded Circe Bioscience, a carbon-negative manufacturing company
- Created what Circe calls the world's first gas-fermentation-derived chocolate
- Won a $3.2M ARPA-E ECOSynBio award from the US Department of Energy
- 2021 Activate Fellow
- Raised over $17 million in total funding for Circe

## Latest updates

- **2024-09** — Circe's most recent reported fundraising (Seed); total funding reported at over $17 million.
- **2024-05** — Circe licensed gas-fermentation technology from the Wyss Institute and announced fermentation-derived chocolate to address cocoa shortages.

## Links

- Website: https://circebioscience.com
- LinkedIn: https://www.linkedin.com/in/shannon-nangle-b53722105

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Profile page: https://yespress.io/shannon-nangle
Published by YesPress — https://yespress.io
Last updated: 2026-06-21