Company

Terrestrial Bio, Inc.

Terrestrial Bio, Inc. develops silk-based delivery technology for vaccines and therapeutics, including the MIMIX patch.

About

Founded in 2012 by Kathryn Kosuda (CSO) and Livio Valenti, the Woburn, Massachusetts company uses a silk biopolymer platform, MIMIX, to deliver vaccines and therapeutics. In March 2026 it raised USD 50 million in Series C funding led by RA Capital Management, with Engine Ventures, Global Health Investment Advisors and SiteGround participating. CEO Rachel Sha led the company as of 2024. The new funding will go to manufacturing, a new Boston headquarters, and clinical trials for its lead GLP-1 program.

9Funding rounds

7Investors

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