# Demisto funding: rounds and investors > Demisto has raised $450M across 2 rounds since 2017. Investors include Accel, Slack and ClearSky Security. Every round with its source. Source: https://millionrounds.com/company/demisto (Millionrounds; every figure on the page links to its filing or article) United States · [Series C startup](https://millionrounds.com/companies) # Who invested in *Demisto* 2 rounds we have observed, with the 4 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. Cybersecurity Funding summary Updated 26 Oct 2026 **$450M** raised across 2 rounds since 2017, from 2 sources **$20M** Series B **$430M** Series C - **Latest round:** Series C, $430M Oct 2018 - **Step-up i:** 21.5× - **Investors:** 4 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. 2017 2018 **$20M** Series B **$430M** Series C - **First round:** Series B, $20M - **Biggest round:** $430M - **Between rounds:** 20 months ## The rounds - **Oct 2018** Series C **$430M** *2 new* [ClearSky Security](https://millionrounds.com/fund/clearsky-security) Greylock Partners/ Accel Reported by FinSMEs SEC filing: $44M sold, first sale Oct 2018 - **Feb 2017** Series B **$20M** *2 new* [Accel](https://millionrounds.com/fund/accel) [Slack](https://millionrounds.com/fund/slack) Reported by FinSMEs ## Founders and team From the SEC filings it signed: 2 on the team. - **Rishi Bhargava** Executive Officer, Director i - **Slavik Markovich** Executive Officer, Director i On the board, as filed i *Jake Flomenberg* *Jay Leek* ## 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 B** 2017 **Series C** 2018 [Accel](https://millionrounds.com/fund/accel) [Slack](https://millionrounds.com/fund/slack) [ClearSky Security](https://millionrounds.com/fund/clearsky-security) Greylock Partners/ Accel ## Everyone who backed them [Accel](https://millionrounds.com/fund/accel) VC firm **1** round [Slack](https://millionrounds.com/fund/slack) Corporate VC **1** round [ClearSky Security](https://millionrounds.com/fund/clearsky-security) VC firm **1** round Greylock Partners/ Accel 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=demisto). ## Also claim to have backed them These 2 firms list Demisto as a portfolio company on their own websites, but no report of a round names them. They are the firms' own claims, kept apart from the rounds above. [Wing Venture Capital](https://millionrounds.com/fund/wing-venture-capital) VC firm Per its own site [Sunlake Capital](https://millionrounds.com/fund/sunlake-capital) Private equity Per its own site ## Quick answers about Demisto ### Who invested in Demisto? Demisto's investors include Accel, Slack, ClearSky Security and Greylock Partners/ Accel. ### How much has Demisto raised? Demisto has raised $450M across 2 rounds since 2017. ### When did Demisto last raise? Demisto's most recent round was a Series C of $430M in Oct 2018. ### What was Demisto's biggest round? Its most recent round, $430M in Oct 2018, is also its largest on record. ### Who backed Demisto first? Demisto's first round on record, in Feb 2017, was backed by Accel and Slack. ### What stage is Demisto at? Demisto's latest named round is a Series C, in Oct 2018. ### Where is Demisto based? Demisto is based in the United States. ## Companies like Demisto In the same sector, and raised in the last eighteen months. [**FORT Robotics** $39M · Oct 2026](https://millionrounds.com/company/fort-robotics)[**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)[**Persona** $210M · Oct 2026](https://millionrounds.com/company/persona)[**Hilt** $4.7M · Oct 2026](https://millionrounds.com/company/hilt) ## 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