Siren is a privately held company. It is backed by 6 investors on record, including Elastic and European Investment Bank.

Where is Siren headquartered?

Siren is headquartered in Galway, Ireland.

Who is the CEO of Siren?

John Randles is the CEO of Siren.

Renaud Delbru and Giovanni Tummarello are co-founders of Siren, founded in 2014.

Siren

Security OperationsGalway, Irelandfounded 2014privatesiren.io ↗

Siren is a cybersecurity company specializing in Security Operations, founded in 2014 and headquartered in Galway, Ireland. It has raised $14.74M in equity across 4 priced rounds, plus $12.82M debt & credit, employs about 74 people, and is privately held.

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updated Oct 11, 2026

Latest Siren news and company activity

What Siren did, dated — selected moves from the record, one per kind, newest first.

Jul 2026PartnershipOcient and Siren Partner to Deliver Trusted Investigative Intelligence for Sovereign National Security
Jul 2026PartnershipOcient and Siren Enhance Federal Data Analysis
Dec 2025Funding roundSiren Secures Investment to Advance AI-Driven Investigations for National Security
Oct 2024Partnership

Siren Momentum score

56/ 100

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Siren products

Siren PlatformInvestigative intelligence platform for security and threat analysisDetails ↗

Siren funding

Siren has raised $14.74M in priced equity, plus $12.82M debt & credit. Its most recent round was a Strategic Investment in December 2025. It has 5 funding rounds on record: Seed, Series A, Series A, Debt Financing, and Strategic Investment. 6 investors are on record, including Elastic and European Investment Bank.

Equity raised: $14.74M4 priced rounds
Last round: Strategic InvestmentDec 2025
Other instruments: $12.82M debt

View the complete funding history

Siren employees and hiring

As of October 2026, Siren has about 74 employees, down 1% over the last 30 days.

Employees: 74
30-day change: -1%
Open roles: 0

See hiring trends

Siren competitors

Competitors of Siren include Triad Secure, Custodio Technologies, and Command Zero. 14 more are in the platform, with overlap scoring.

matched by product category and features

View all 17 competitors with overlap scores

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The other 440 data points.

Funding historyevery round, every investor named
Headcount growthvelocity, departments, seniority
Open jobslive postings, hiring pace, role mix
Tech stackframeworks, clouds, security
Competitorsfull set, overlap scored
Leadershipevery exec, with roles
Customersnamed publicly, with sources
Reviews & newssentiment, coverage, cadence

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Funding, round by round, with the investors
Headcount, hiring and the people
The timeline of what they did, dated
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The other 440 data points.

Funding historyevery round, every investor named
Headcount growthvelocity, departments, seniority
Open jobslive postings, hiring pace, role mix
Tech stackframeworks, clouds, security

Similar in Security Operations

Common questions about Siren.

How much funding has Siren raised?: Siren has raised $14.74M in priced equity, plus $12.82M debt & credit. Its most recent round was a Strategic Investment in December 2025. It has 5 funding rounds on record: Seed, Series A, Series A, Debt Financing, and Strategic Investment. 6 investors are on record, including Elastic and European Investment Bank.
How many people work at Siren?: As of October 2026, Siren has about 74 employees, down 1% over the last 30 days.
Who owns Siren?: Siren is a privately held company. It is backed by 6 investors on record, including Elastic and European Investment Bank.
Where is Siren headquartered?: Siren is headquartered in Galway, Ireland.
Who is the CEO of Siren?: John Randles is the CEO of Siren.
Who founded Siren?: Renaud Delbru and Giovanni Tummarello are co-founders of Siren, founded in 2014.
Who are Siren's competitors?: Competitors of Siren include Triad Secure, Custodio Technologies, and Command Zero. 14 more are in the platform, with overlap scoring.
What does Siren do?: Siren is a cybersecurity company specializing in Security Operations, founded in 2014 and headquartered in Galway, Ireland.