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Tolerance Bio

Biotech & Life Sciences · Philadelphia, United States · Founded 2023

Innovative therapies enhancing immune tolerance by restoring thymus function to combat immune-mediated diseases MoreLess

Tolerance Bio is at the forefront of developing innovative therapies aimed at enhancing immune tolerance by restoring and preserving the function of the thymus, a critical organ in the immune system. The company targets immune-mediated diseases, which include cancer, autoimmunity, transplant rejection, infections, immune deficiencies, and allergies. These conditions represent significant unmet medical challenges due to abnormalities in immune tolerance. Tolerance Bio operates in the biotechnology sector, focusing on a multi-platform approach to manipulate thymus function, thereby addressing the root causes of these diseases. The business model involves pioneering novel therapeutics with the potential to rapidly advance and validate concepts in rare diseases, followed by proof of concept in broader indications. Revenue is generated through the development and commercialization of these therapeutics, targeting both niche and major markets. The company serves healthcare providers, researchers, and patients seeking advanced solutions for immune-related conditions. Keywords: thymus, immune tolerance, biotechnology, immune-mediated diseases, therapeutics, innovation, Francisco Leon, autoimmunity, transplant rejection, rare diseases.

Company overview

Tolerance Bio company information

The essential company record, classifications and operating signals in one place.

Status
Operational
Founded
2023
Headquarters
Philadelphia, United States
Employees
17
Open positions
None listed
Dealroom signal
73.7
client focusb2bsub industryBioTechnologybusiness modelManufacturingindustryHealthsectorBiotechnologysectorSpinoutsectorBiotech and PharmasectorDT and LSsectorscience-based

Valuation & funding

Tolerance Bio funding history

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
EARLY VCEquity / VC Aug 2026 $0 NeolmmuneTech
EARLY VCEquity / VC Jun 2026 $0 BCI · Beyond Celiac
SEEDEquity / VC Dec 2024 $20M $81M Ben Franklin Technology Partners of Northeastern Pennsylvania · Criteria Bio Ventures · BioAdvance · Pacific 8 Ventures
SPINOUTOther financing Jan 2023 $0 University of Colorado Anschutz Medical Campus · University of Florida · University of Colorado
Showing 4 recorded eventsUnlock the complete deal history →

Financials

Workforce over time

Available workforce history. Financial fields without reported data are omitted.

YearEmployees
2026 17
2025 17
2024 12
Company filings, research estimates and Dealroom dataOpen the full financial model →

Growth signals

Tolerance Bio website traffic

Latest recorded traffic for Tolerance Bio is 1.7K monthly website visits, up 13.3% over the last three months. Tolerance Bio's team grew 0% over the past year.

Latest monthly visits1.7K 3-month web change+13.3% 1-year team growth0%
Monthly website visits21 observations · Oct 2024–Jul 2026
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Comparisons

Tolerance Bio compared with similar companies

Dealroom’s weighted taxonomy model identifies the closest operating peers. Company identity and context stay open; selected comparison metrics preview what is available in the platform.

Showing 8 of the closest matchesCompare every metric →

Talent graph

Tolerance Bio's talent

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Team profiled 5 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators 3 quality Hidden — book a demo/100
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Investors

12 investors on Tolerance Bio's cap table

Sourced from Dealroom's funding and investor records.

Seed 6 investors entered at this stage
Columbus Venture Partners
Ben Franklin Technology Partners of Northeastern Pennsylvania
Criteria Bio Ventures
BioAdvance
Pacific 8 Ventures
Sessa Capital
Series A 3 investors entered at this stage
BCI
Beyond Celiac
NeolmmuneTech
Other known 3 additional known investors
University of Colorado
University of Colorado Anschutz Medical Campus
University of Florida

Global footprint

Where Tolerance Bio has talent and traffic

Workforce by country
3 countries with
team presence
🇺🇸 United States86.7%
🇪🇸 Spain6.7%
🇳🇱 Netherlands6.7%
3 countries shown

In the news

Latest news about Tolerance Bio

Recent press, funding announcements, and product moves mentioning Tolerance Bio — open to read from the original sources.

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Market sentiment

What the market is saying about Tolerance Bio

An AI-synthesized read of the highest-engagement posts about Tolerance Bio on X over the past 7 days. We rank by likes & retweets, ignore corporate channels, and surface the themes that broke out from real people.

Reading the room on X — pulling top posts and synthesizing themes…

Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

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