Insights

Strategic shift Turnstone has recently undergone significant strategic and structural changes including a merger with XOMA and a broad strategic review that could lead to a sale or merger. This creates an openness to partnership opportunities, licensing deals, or investment discussions as the company explores alternatives.

Clinical program focus The company previously pursued Selected TIL therapy with TIDAL-01 in multiple solid tumor indications, but recent news indicates discontinuation or strategic realignment of TIDAL-01. This signals a potential pivot toward new collaborations or technology transfer opportunities in TIL platforms.

Financial health With funding around 133 million and reported revenue in the 10–25 million range, Turnstone maintains a moderate-to-strong cash runway for ongoing discussions with potential acquirers, partners, or-licensees, making it a credible candidate for strategic partnerships.

Executive and governance Recent leadership updates and board changes, including new board appointments and SVP of Clinical Development, indicate active governance evolution, suggesting opportunities to engage with senior management on joint development plans, co-development, or advisory arrangements.

Clinical and market potential Turnstone’s focus on tumor-infiltrating lymphocytes and expansion of potent tumor-reactive T cells positions the company within the growing TIL and cell therapy landscape, offering avenues for collaboration, licensing of platforms or technologies, and co-development with broader oncology portfolios.

Similar companies to Turnstone Biologics

Turnstone Biologics Tech Stack

Turnstone Biologics uses 8 technology products and services including Drupal, Open Graph, JSON-LD, and more. Explore Turnstone Biologics's tech stack below.

  • Drupal
    Content Management System
  • Open Graph
    Content Management System
  • JSON-LD
    Javascript Frameworks
  • Microsoft
    Miscellaneous
  • PHP
    Programming Languages
  • Smartsheet
    Project Management
  • HSTS
    Security
  • X-XSS-Protection
    Security

Media & News

Turnstone Biologics's Email Address Formats

Turnstone Biologics uses at least 1 format(s):
Turnstone Biologics Email FormatsExamplePercentage
First.Last@turnstonebio.comJohn.Doe@turnstonebio.com
85%
First@turnstonebio.comJohn@turnstonebio.com
13%
First.Middle@turnstonebio.comJohn.Michael@turnstonebio.com
1%
First.L@turnstonebio.comJohn.D@turnstonebio.com
1%

Frequently Asked Questions

What is Turnstone Biologics's stock symbol?

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Turnstone Biologics is a publicly traded company; the company's stock symbol is TSBX.

What is Turnstone Biologics's official website and social media links?

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Turnstone Biologics's official website is turnstonebio.com and has social profiles on LinkedInCrunchbase.

How much revenue does Turnstone Biologics generate?

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As of July 2026, Turnstone Biologics's annual revenue is estimated to be $10M - $25M.

What is Turnstone Biologics's SIC code NAICS code?

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Turnstone Biologics's SIC code is 8731 - Commercial Physical and Biological Research NAICS code is 541714 - Research and Development in Biotechnology (except Nanobiotechnology).

How many employees does Turnstone Biologics have currently?

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As of July 2026, Turnstone Biologics has approximately 22 employees across 1 continents, including North America. Key team members include Svp, Clinical Development: I. V.Associate Director, Immunology: L. P.Executive Administrator And Office Manager: J. Y.. Explore Turnstone Biologics's employee directory with LeadIQ.

What industry does Turnstone Biologics belong to?

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Turnstone Biologics operates in the Biotechnology Research industry.

What technology does Turnstone Biologics use?

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Turnstone Biologics's tech stack includes DrupalOpen GraphJSON-LDMicrosoftPHPSmartsheetHSTSX-XSS-Protection.

What is Turnstone Biologics's email format?

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Turnstone Biologics's email format typically follows the pattern of First.Last@turnstonebio.com. Find more Turnstone Biologics email formats with LeadIQ.

How much funding has Turnstone Biologics raised to date?

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As of July 2026, Turnstone Biologics has raised $133M in funding. The last funding round occurred on Jul 14, 2021.

When was Turnstone Biologics founded?

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Turnstone Biologics was founded in 2015.
Turnstone Biologics logo

Turnstone Biologics

Biotechnology ResearchCalifornia, United States11-50 Employees

Turnstone Biologics is a clinical-stage biotechnology company based in San Diego, California, focused on developing therapies for solid tumors. Its approach relies on Selected Tumor-Infiltrating Lymphocytes, which are identified, selected, and expanded to form potent tumor-reactive T cells, with the aim of addressing limitations seen with earlier bulk TIL therapies. The company’s clinical program, TIDAL-01, has been evaluated in early-phase studies across colorectal cancer, head and neck cancer, and uveal melanoma. Turnstone operates within the biotechnology research sector and pursues a next-generation TIL platform as its primary clinical strategy. In August 2025, XOMA Corporation merged Turnstone Biologics into a subsidiary of XRA 3 Corp., marking a significant corporate development for the company.

Section iconCompany Overview

SIC Code
8731 - Commercial Physical and Biological Research
Stock Symbol
TSBX
NAICS Code
541714 - Research and Development in Biotechnology (except Nanobiotechnology)
Founded
2015
Employees
11-50

Section iconFunding & Financials

  • $133M

    Turnstone Biologics has raised a total of $133M of funding over 5 rounds. Their latest funding round was raised on Jul 14, 2021as a series_d.

  • $10M - $25M

    Turnstone Biologics's revenue is estimated to be in the range of $10M - $25M

Section iconFunding & Financials

  • $133M

    Turnstone Biologics has raised a total of $133M of funding over 5 rounds. Their latest funding round was raised on Jul 14, 2021as a series_d.

  • $10M - $25M

    Turnstone Biologics's revenue is estimated to be in the range of $10M - $25M

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