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TRexBio

TRexBio

Private
South San Francisco, CaliforniaHealthcare & Life Scienceshttps://trex.bio/

Last Round

Series B

Extension

Jan 27, 2026

Total Funding Raised

$219M

Momentum

Top 25%

of companies Caplight tracks

Company Overview

TRexBio is a biotechnology company that develops immunoregulatory medicines by mapping human tissue regulatory T cell behavior to disease processes to identify novel therapeutic targets.

Sector

Healthcare & Life Sciences

Verticals

Biotechnology, Drug Discovery, Clinical Trials, Precision Medicine

Business Model

B2B

Customer Profile

Services & Consulting

AI Layer

Application

Keywords

regulatory T cellsTregstissue-targeted therapeuticsimmune-mediated diseasesTNFR2 agonistCD30 agonistbiotech drug discoverycomputational biologyin-silico drug discoveryimmune homeostasisclinical-stage biotechdrug development pipelineprecision immunologyatopic dermatitis treatmentpharma partnering

Historical Pricing

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Caplight Momentum Score

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TRexBio Comparables

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TRexBio comparables — related companies by embedding similarity
CompanySimilarityMarket Cap
Mozart Therapeutics
84%
Sonoma Biotherapeutics
80%
Egle Therapeutics
80%

TRexBio Funding Rounds

Historical fundraising activity

Data table
RoundDateAmount RaisedValuationInvestorsSources
Series B ExtensionJan 27, 2026
Series BNov 13, 2024
Series A ExtensionMar 8, 2022
Series AJun 22, 2021

Key People

Founding team and executive leadership

Johnston Erwin

Chief Executive Officer

Executive Team

Brandon H.

Chief Financial Officer

Executive Team

TRexBio Investors

Notable investors and investment history

TRexBio investors
InvestorRounds
Avego ManagementSeries B, Series B Extension
Janus Henderson GroupSeries B Extension
Agent CapitalSeries B
Balyasny Asset Management L.P.Series B Extension
SV Health InvestorsSeries B, Series A, Series A Extension, Series B Extension, Seed
Alexandria Venture InvestmentsSeries B, Series A, Series A Extension, Series B Extension
Pfizer VenturesSeries B, Series A, Series A Extension, Series B Extension

Market signals

Structured signals derived from secondary market and firmographic data.

  • Aug 22, 2026

    Monthly visitors grew 79% MoM, from 4.9K to 8.9K.

  • Jul 29, 2026

    Monthly visitors grew 66% MoM.

Recent news

Latest coverage and updates

  • goes_publicSep 18, 2026

    TRex Bio, Inc. was planning to go public on Sep 18th '26.

TRexBio Filings

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TRexBio filings preview — column headings only; records require access
TypeDateAmount OfferedAmount SoldFilingPagesDownload

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Frequently Asked Questions

Common questions about TRexBio's valuation, stock price, and market status.

Is TRexBio a public or private company?

TRexBio is a private company.

What is the current stock price of TRexBio?

TRexBio is a private company with no public stock price. No recent secondary market data is available.

How much is TRexBio worth (valuation)?

Valuation information for TRexBio is not publicly available.

Can I buy TRexBio stock?

TRexBio shares may be available on secondary markets subject to transfer restrictions. Caplight facilitates secondary market transactions for accredited investors. Visit https://www.caplight.com to learn more.

When was TRexBio's last funding round?

TRexBio's most recent funding round was Series B Extension on January 27, 2026.

Who are the main investors in TRexBio?

Key investors in TRexBio include Janus Henderson Group, Balyasny Asset Management L.P., SV Health Investors, Delos Capital Partners, Polaris Partners.

Will TRexBio IPO soon?

No public IPO plans have been announced for TRexBio.

How can I track TRexBio secondary market activity?

Caplight tracks bids, offers, and trades for private companies. Visit https://www.caplight.com to monitor TRexBio's secondary market activity and sign up for updates.

Firmographic Details

HeadquartersSouth San Francisco, California
Employee Range56
Year Founded2018
Last FundingJan 27, 2026

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