# Sonrai Security funding: rounds and investors > Sonrai Security has raised $69M across 2 rounds since 2019. Investors include Polaris Partners, Menlo Ventures and Eleven Ventures. Every round with its source. Source: https://millionrounds.com/company/sonrai-security (Millionrounds; every figure on the page links to its filing or article) United States · [Series C startup](https://millionrounds.com/companies) # 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. Cloud Cybersecurity Funding summary Updated 26 Oct 2026 **$69M** raised across 2 rounds since 2019, from 2 sources **$19M** Series A **$50M** Series C - **Latest round:** Series C, $50M Oct 2021 - **Step-up i:** 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. 2019 2020 2021 **$19M** Series A **$50M** Series C - **First round:** Series A, $19M - **Biggest round:** $50M - **Between rounds:** 2.7 years ## The rounds - **Oct 2021** Series C **$50M** *4 new* *1 returning* [Menlo Ventures](https://millionrounds.com/fund/menlo-ventures) [Polaris Partners](https://millionrounds.com/fund/polaris-partners) [Eleven Ventures](https://millionrounds.com/fund/eleven-ventures-3) [New Brunswick Innovation Foundation](https://millionrounds.com/fund/nbif) [Ten Eleven Ventures](https://millionrounds.com/fund/ten-eleven-ventures) Source recorded SEC filing: $50M sold, first sale Oct 2021 - **Jan 2019** Series A **$19M** *2 new* [Polaris Partners](https://millionrounds.com/fund/polaris-partners) TenEleven Ventures/ New Brunswick Innovation Foundation 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 Hannigan** CEO & Co-Founder *Named on its 2021 Form D* **Sandy Bird** CTO & Co-Founder - **Aaron Breen** Vice President of Customer Success - **Theresa Roulic** Executive Officer i - **William Bird** Executive Officer, Director i On the board, as filed i *Alex Doll* *Amit Jasuja* *Dave Barrett* *Jeff Smith* *Venky 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 A** 2019 **Series C** 2021 [Polaris Partners](https://millionrounds.com/fund/polaris-partners) [Menlo Ventures](https://millionrounds.com/fund/menlo-ventures) [Eleven Ventures](https://millionrounds.com/fund/eleven-ventures-3) [New Brunswick Innovation Foundation](https://millionrounds.com/fund/nbif) [Ten Eleven Ventures](https://millionrounds.com/fund/ten-eleven-ventures) TenEleven Ventures/ New Brunswick Innovation Foundation ## Everyone who backed them [Polaris Partners](https://millionrounds.com/fund/polaris-partners) VC firm **2** rounds [Menlo Ventures](https://millionrounds.com/fund/menlo-ventures) VC firm **1** round [Eleven Ventures](https://millionrounds.com/fund/eleven-ventures-3) VC firm **1** round [New Brunswick Innovation Foundation](https://millionrounds.com/fund/nbif) VC firm **1** round [Ten Eleven Ventures](https://millionrounds.com/fund/ten-eleven-ventures) VC firm **1** round TenEleven Ventures/ New Brunswick Innovation Foundation no record of our own yet **1** round Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=sonrai-security). ## 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. ## Companies like Sonrai Security In the same sector, and raised in the last eighteen months. [**SpaceX** $42B · Oct 2026](https://millionrounds.com/company/spacex)[**FORT Robotics** $39M · Oct 2026](https://millionrounds.com/company/fort-robotics)[**Blacksmith** $131M · Oct 2026](https://millionrounds.com/company/blacksmith)[**Opsin** $21M · Oct 2026](https://millionrounds.com/company/opsin)[**Harmonic Security** $68M · Oct 2026](https://millionrounds.com/company/harmonic-security)[**Reach Security** $60M · Oct 2026](https://millionrounds.com/company/reach-security) ## Find investors like these Search every investor by what they have actually funded, then narrow to your stage and market. Free. Open the investor searchOr these rounds in the app