Sublime Security

Washington, DC · Founded 2019 · Privately Held (backing)

Developer an email security platform designed to write and run custom detection and response rules to block phishing attacks. Sublime Security is based in Washington, DC and was founded in 2019. Its last reported valuation was $948 million in Oct 2025. It has raised $240 million.

Last reported valuation
$948.0M
Oct 2026
Priced at
—
Total raised
$239.8M
Last round
—

Who backs Sublime Security?

26 investors
InvestorType
Index VenturesVenture capital
Citi VenturesVenture capital
Slow VenturesOther
SNRVenture capital
Avenir Growth CapitalGrowth equity
IVPVenture capital
GeorgianVenture capital
01 AdvisorsVenture capital
Citigroup Alternative InvestmentsPE / buyout
Decibel PartnersVenture capital
+ 16 more investors · a free account shows the complete list
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Sublime Security investors

26 investors are on record for Sublime Security, including Index Ventures, Citi Ventures, Slow Ventures and SNR. By type, the record holds 7 venture capital firms, 1 private equity firm and 1 growth equity firm.

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