Siren Biotechnology: Funding, Investors & Team (Oct 2026)
Siren Biotechnology combines AAV gene therapy and cytokine immunotherapy into a new method for treating cancer. By merging these two innovative technologies, Siren Biotechnology has created a unique approach that overcomes challenges and revolutionizes the way tumor cells are targeted and the immune response to tumors is enhanced.
Siren Biotechnology has raised $27.6M across 3 funding rounds on record, the most recent an undisclosed round of $8.0M announced in Jun 2026.
That round is in line with the $8.1M median round size for Biotechnology companies tracked on FundedIQ over the last two years.
Siren Biotechnology Company Profile and Key Stats
Latest funding round on record: Jun 2026.
Siren Biotechnology Funding Rounds
1 of 3 rounds was announced without a disclosed amount and is excluded from the total.
Siren Biotechnology raised $19.6M in a Seed announced in Apr 2024.
2 months later, an undisclosed round was announced in Jun 2024 with no disclosed amount.
2 years later, an undisclosed round of $8.0M was announced in Jun 2026.
Siren Biotechnology Founders and Leadership Team
No contact details are on record for this team yet.
Siren Biotechnology Funding Compared to Other Biotechnology Startups
Siren Biotechnology's latest round of $8.0M is in line with the median round in Biotechnology. Medians cover the last 24 months of disclosed rounds.
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Siren Biotechnology Funding FAQs
What does Siren Biotechnology do?
Siren Biotechnology combines AAV gene therapy and cytokine immunotherapy into a new method for treating cancer. By merging these two innovative technologies, Siren Biotechnology has created a unique approach that overcomes challenges and revolutionizes the way tumor cells are targeted and the immune response to tumors is enhanced.
How much funding has Siren Biotechnology raised?
Siren Biotechnology has raised $27.6M across 3 rounds on record. The most recent is an undisclosed round of $8.0M announced in Jun 2026.
When did Siren Biotechnology last raise funding?
Siren Biotechnology's most recent funding round on record is an undisclosed round of $8.0M, announced in Jun 2026.
Who founded Siren Biotechnology?
FundedIQ lists Nicole K (Founder), Nicole K Paulk (Founder) at Siren Biotechnology.
Where is Siren Biotechnology headquartered?
Siren Biotechnology is based in San Francisco, California, United States.
How many employees does Siren Biotechnology have?
Siren Biotechnology is in the 1-10 employee band.
How does Siren Biotechnology's funding compare to other Biotechnology startups?
Siren Biotechnology's latest round of $8.0M is in line with the $8.1M median round size for Biotechnology companies on FundedIQ across 4,185 tracked companies over the last two years.
About FundedIQ's Siren Biotechnology Funding Data
FundedIQ tracks announced funding rounds and refreshes this profile every week. Round dates, stages and amounts are normalised to a single format, converted to US dollars, and de-duplicated: two records of the same round announced days apart are merged, and two genuinely different rounds are kept apart on the amounts they disclose. Amounts shown are the disclosed figures only — a round announced without a number is listed and excluded from the total rather than estimated.
Employee counts are reported bands, not exact headcounts. Founder and executive names carry the job title on record. Anything we do not hold for Siren Biotechnology is left off this page rather than filled in.
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