TRexBio
TRex Bio
South San Francisco, United States · Founded 2018 · $219.0M raised
- Headquarters
- South San Francisco
- Employees
- 11–50
- Founded
- 2018
- Business Model
- B2B
- Website
- trex.bio
- Total Funding
- $219.0M
- Last Round
- $50.0M Extension RoundJan 2026
- Rounds
- 4
About
TRexBio is a South San Francisco-based clinical-stage biotechnology company developing purpose-built biologics that restore immune balance in autoimmune and inflammatory diseases. Founded in 2018 with seed funding from SV Health Investors, TRexBio's platform leverages deep tissue biology to design biologics capable of selectively modulating immune responses. The company raised M in a Series B extension in January 2026 to advance its pipeline including programs for atopic dermatitis.
Summary
TRexBio is a Biotech company based in South San Francisco, United States, founded in 2018. It has raised $219.0M in total across 4 rounds, most recently a $50.0M Extension Round round in Jan 2026. Investors include Delos Capital, Polaris Partners and SV Health Investors.
Tech & App Stack
5 technologies & apps tracked
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Funding History
Jan 2026
Sign up to see all 4 rounds
Series A through Extension Round — per-round amounts, valuations, and who invested in each round.
Investors
Delos Capital
1 round
Polaris Partners
1 round
SV Health Investors
2 rounds
Pfizer Ventures
2 rounds
Johnson & Johnson Innovation
2 rounds
Alexandria Venture Investments
2 rounds
Eli Lilly
2 rounds
Janus Henderson Investors
1 round
Balyasny Asset Management
1 round
Affinity Asset Advisors
1 round
Avego Bioscience
1 round
Agent Capital
1 round
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