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Siren Biotechnology

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Combines AAV gene therapy and cytokine immunotherapy to revolutionize cancer treatment

San Francisco, United StatesFounded 2020Biotech & Life Sciences
Valuation $0–100M Latest valuation · 2024
Headcount <100 Current team size
Total funding $10–50M Disclosed equity funding
Unlock exact values This page shows ranges. Dealroom has the exact numbers for Siren Biotechnology and the history behind them.

About Siren Biotechnology

Siren Biotechnology is a pioneering startup focused on revolutionizing cancer treatment through innovative therapies. The company is at the forefront of combining two advanced therapeutic technologies: AAV (Adeno-Associated Virus) gene therapy and cytokine immunotherapy. This unique combination aims to create a powerful new treatment to combat cancer, particularly targeting brain and eye tumors, which are notoriously difficult to treat with existing methods.

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Siren Biotechnology operates in the biopharmaceutical market, specifically within the niche of cancer therapeutics. The company serves a diverse range of clients, including healthcare providers, research institutions, and ultimately, cancer patients who are in dire need of more effective treatment options. Their primary goal is to address the significant unmet medical needs in the oncology sector by developing therapies that can overcome the limitations of past treatments.

The business model of Siren Biotechnology is centered around research and development (R&D) of their proprietary AAV immuno gene therapy. They invest heavily in scientific research to advance their treatment modalities from the lab to clinical trials, and eventually to market. The company generates revenue through a combination of funding from venture capital, partnerships with pharmaceutical companies, and potentially, future sales of their approved therapies.

Siren Biotechnology makes money by securing investments from venture capital firms, forming strategic partnerships with larger pharmaceutical companies, and through the eventual commercialization of their therapies. By bringing their innovative treatments to market, they aim to not only improve patient outcomes but also achieve financial sustainability and growth.

In summary, Siren Biotechnology is dedicated to changing the landscape of cancer treatment through cutting-edge AAV gene therapy and cytokine immunotherapy. Their focus on brain and eye tumors positions them uniquely in the oncology market, with a strong emphasis on R&D and strategic partnerships to drive their business forward.

Source: Dealroom company data

At a glance

Status
Operational
Founded
2020
Headquarters
San Francisco, United States
Employees
10
Open positions
None listed
Dealroom signal
71.4/100
Industry
Health
Sub-industry
BioTechnology
Sector
Biotech & Life Sciences, Biotechnology, Spinout, Biotech and Pharma, Woman Founder, DT and LS, science-based
Business model
Manufacturing
Client focus
b2b

Latest news

Press, funding announcements and product moves mentioning Siren Biotechnology.

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Funding history

5 recorded events

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
GRANTOther financing Jun 2026 $8M California Institute for Regenerative Medicine
SEEDEquity / VC Apr 2024 $20M $78M Undisclosed
Showing the latest 2 of 5 recorded eventsBook a demo for the full funding history →

Growth signals

Siren Biotechnology website traffic

Latest recorded traffic for Siren Biotechnology is 2.9K monthly website visits, down 3.3% over the last three months. Siren Biotechnology's team declined 9.1% over the past year.

Latest monthly visits2.9K 3-month web change-3.3% 1-year team growth-9.1%
Summary metrics are public; monthly history is available with a demoCompare with peers →

Open positions

Openings linked to this company in Dealroom
1 distinct opening shownExplore hiring signals →

Similar companies

Closest operating peers by Dealroom taxonomy

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Showing 8 of the closest matchesCompare every metric →

Investors

9 investors on the cap table

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

Seed5 investors entered at this stage

Other known investors4 additional known investors

  • University of California, San Francisco
  • Carnrite Ventures
  • Hawktail
  • NZVC
Team profiled 2 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators 1 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
1 countries with
team presence
🇺🇸 United States100%
1 country shown

Market sentiment

Posts on X, past 7 days

An AI-synthesised read of the highest-engagement posts about Siren Biotechnology 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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