Funding record · 2025 / 10
Sublime Security raises $150M Series C for email & messaging security
Announced 28 October 2025 · Recorded 8 September 2026 · Last verified 8 September 2026
Sublime Security, an email & messaging security company based in Washington, United States, raised $150M in a Series C announced on 28 October 2025, led by Georgian, 01 Advisors and Avenir with 7 others. Its disclosed equity funding is now $239.8M across 4 rounds.
- Amount
- $150M
- Round
- Series C
- Announced
- 28 October 2025
- Lead investors
- Georgian, 01 Advisors, Avenir, Citi Ventures, Index Ventures, IVP, Jonathan Oberheide, Nicole Perlroth, Silver Buckshot Ventures, Slow Ventures
- Sources on record
- 1prnewswire.com
From the source
Sublime Security Raises $150M in Series C Funding as Industry-First AI Agents Accelerate Growth
Sublime Security announced a $150M Series C funding round led by Georgian to accelerate its agentic AI capabilities for email security. The funding will support expansion of its Autonomous Security Analyst (ASA) and Autonomous Detection Engineer (ADÉ) AI agents.
prnewswire.com · 28 October 2025 ↗The Mandos read
What the record says about Sublime Security
- Momentum 52 / 100 · Steadylocked →
pillars in the platform
- 300 employees · up 1% last monthlocked →
history and breakdowns in the platform
- Exit Readiness: Lowlocked →
Tested against 751 past exits in the Mandos record: 43% sat in Watch or Elevated 2 years before. Companies in Elevated exited at 3.1× the record's rate.
- Buyers most often compare Sublime Security with Abnormal Securitylocked →
the full set in the platform
Funding history
Sublime Security funding on record
Sublime Security has raised $239.8M in priced equity. Its most recent round was a Series C in October 2025.
Latest round on record: Series C, Oct 2025.
Sublime Security funding on the profile →Related rounds
Other verified cybersecurity rounds
Also in Oct 2025
Most recent five, same month
In the platform
The round is the fact. The read is the product.
Every round, investor and correction for Sublime Security, the competitors buyers weigh it against, hiring by department, and an alert when the next thing happens.
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FAQ
Questions people ask
- How much did Sublime Security raise in its Series C?
- Sublime Security raised $150M in a Series C announced on 28 October 2025.
- Who invested in Sublime Security's Series C?
- The round was led by Georgian, 01 Advisors, Avenir, Citi Ventures, Index Ventures, IVP, Jonathan Oberheide, Nicole Perlroth, Silver Buckshot Ventures, Slow Ventures.
- What does Sublime Security do?
- Sublime Security is a cybersecurity company specializing in Email & Messaging Security, founded in 2019 and headquartered in Washington, United States.
