Who invested in Demisto?
Demisto's investors include Accel, Slack, ClearSky Security and Greylock Partners/ Accel.
United States · Series C startup
Funding summaryUpdated 26 Oct 2026
$450Mraised across 2 rounds since 2017, from 2 sources
Each circle is a round, placed by date and sized by amount. The line above is the running total.
Reported by FinSMEsSEC filing: $44M sold, first sale Oct 2018
From the SEC filings it signed: 2 on the team.
On the board, as filediJake FlomenbergJay Leek
The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.
Demisto's investors include Accel, Slack, ClearSky Security and Greylock Partners/ Accel.
Demisto has raised $450M across 2 rounds since 2017.
Demisto's most recent round was a Series C of $430M in Oct 2018.
Its most recent round, $430M in Oct 2018, is also its largest on record.
Demisto's first round on record, in Feb 2017, was backed by Accel and Slack.
Demisto's latest named round is a Series C, in Oct 2018.
Demisto is based in the United States.
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