United States · Series C startup

Who invested in Sonrai Security

2 rounds we have observed, with the 6 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.

CloudCybersecurity

Funding summaryUpdated 26 Oct 2026

$69Mraised across 2 rounds since 2019, from 2 sources

$19MSeries A$50MSeries C
Latest round
Series C, $50MOct 2021
Step-upi
2.7×
Investors
6
See who backed them

The funding story

Each circle is a round, placed by date and sized by amount. The line above is the running total.

201920202021
$19MSeries A$50MSeries C
First round
Series A, $19M
Jan 2019
Biggest round
$50M
Series C · Oct 2021
Between rounds
2.7 years
from the last two

The rounds

  1. Oct 2021
    Series C$50M4 new1 returning

    Source recordedSEC filing: $50M sold, first sale Oct 2021

  2. Jan 2019
    Series A$19M2 new

    Reported by FinSMEs

Founders and team

From Sonrai Security's own website and the SEC filings it signed: 2 founders, 3 on the team.

Brendan HanniganCEO & Co-FounderNamed on its 2021 Form D
Sandy BirdCTO & Co-Founder
  • Aaron BreenVice President of Customer Success
  • Theresa RoulicExecutive Officeri
  • William BirdExecutive Officer, Directori

On the board, as filediAlex DollAmit JasujaDave BarrettJeff SmithVenky Ganesan

Who was in which round

The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.

Series A2019Series C2021Polaris PartnersMenlo VenturesEleven VenturesNew Brunswick Innovation FoundationTen Eleven VenturesTenEleven Ventures/ New Brunswick Innovation Foundation

Everyone who backed them

Polaris PartnersVC firm2rounds
Menlo VenturesVC firm1round
Eleven VenturesVC firm1round
Ten Eleven VenturesVC firm1round
TenEleven Ventures/ New Brunswick Innovation Foundationno record of our own yet1round

Missing a round, or an investor who was in one? Tell us.

Quick answers about Sonrai Security

Who invested in Sonrai Security?

Sonrai Security's investors include Polaris Partners, Menlo Ventures, Eleven Ventures, New Brunswick Innovation Foundation and Ten Eleven Ventures, and 1 more on record.

How much has Sonrai Security raised?

Sonrai Security has raised $69M across 2 rounds since 2019.

When did Sonrai Security last raise?

Sonrai Security's most recent round was a Series C of $50M in Oct 2021.

What was Sonrai Security's biggest round?

Its most recent round, $50M in Oct 2021, is also its largest on record.

Who backed Sonrai Security first?

Sonrai Security's first round on record, in Jan 2019, was backed by Polaris Partners and TenEleven Ventures/ New Brunswick Innovation Foundation.

What stage is Sonrai Security at?

Sonrai Security's latest named round is a Series C, in Oct 2021.

Where is Sonrai Security based?

Sonrai Security is based in the United States.

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