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Capstan Therapeutics

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Advancing cell engineering to develop therapeutics for a broad range of diseases

San Diego, United StatesFounded 2021Biotech & Life Sciences
Valuation $1–2.5B Last recorded · 2025
Headcount <100 Current team size
Total funding $100–500M Disclosed equity funding
Unlock exact values This page shows ranges. Dealroom has the exact numbers for Capstan Therapeutics and the history behind them.

About Capstan Therapeutics

CapstanTX is a biotechnology startup that specializes in developing targeted lipid nanoparticles (tLNPs). These are tiny particles that can be loaded with medical payloads, such as mRNA or gene editing tools, and then delivered to specific cells in the body. This technology is designed to reprogram specific cell types, potentially treating a range of diseases at their source. The company's tLNPs can be adjusted to meet safety and efficacy standards for different diseases, and they can potentially be administered in earlier disease stages and in outpatient settings.

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The company's technology is modular, meaning it can be adapted to deliver a wide range of payloads. For example, it can deliver mRNA-encoded CARs (Chimeric Antigen Receptors) to specific immune cells, programming them to eliminate disease-causing cells. It can also deliver gene editing tools to pathogenic cells, modifying their DNA to treat genetic diseases.

CapstanTX operates in the biotechnology market, serving clients in the medical and pharmaceutical industries. The company makes money by developing and licensing its technology to these clients.

The team at CapstanTX is made up of scientific leaders from various fields, including cell and gene therapy, RNA and delivery technologies, and drug development. They are committed to pioneering new medical treatments to improve market access and scalability, and to increase the range of therapeutic options available to patients.

Source: Dealroom company data

At a glance

Founded
2021
Headquarters
San Diego, United States
Sector
Biotech & Life Sciences
Power Law
Unicorn$1–10B valuation tier

Latest news

Press, funding announcements and product moves mentioning Capstan Therapeutics.

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Investors

21 investors on the cap table

From Dealroom's funding and investor records, grouped by the round each investor first entered.

Seed4 investors entered at this stage

Series A11 investors entered at this stage

Series B and later6 investors entered at this stage

Team profiled 22 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators 11 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.

Global footprint

Workforce and web traffic by country
Workforce by country
2 countries with
team presence
🇺🇸 United States95.8%
🇳🇱 Netherlands4.2%
2 countries shown
Web traffic by country
230 monthly visits
across markets
🇺🇸 United States87%
Top 1 markets shown

Patents

Estimated portfolio value
$173k

6 active patent families included in this estimate.

A patent family groups patent filings for the same invention. Source: Dealroom · PatSnap.

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Market sentiment

Posts on X, past 7 days

An AI-synthesised read of the highest-engagement posts about Capstan Therapeutics on X, ranked by likes and reposts, corporate channels excluded.

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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