Sublime Black
ClosedAutomating Cyber Security Incident Response Through Artificial…
Rockville, United States · Founded 2019 · $232.7M raised
- Headquarters
- Rockville, Maryland
- Employees
- 1–10
- Founded
- 2019
- Business Model
- B2B
- Website
- sublimeblack.com
- Total Funding
- $232.7M
- Last Round
- $150.0M Series COct 2025
- Rounds
- 5
About
Sublime Black was a cybersecurity startup focused on automating incident response using artificial intelligence. Founded in 2019 and part of Y Combinator's Winter 2019 batch, the company was headquartered in Rockville, Maryland. It was co-founded by Kembey Gbarayor and Charles Whitby and is currently listed as inactive.
Summary
Sublime Black is an Artificial Intelligence company based in Rockville, United States, founded in 2019. It has raised $232.7M in total across 5 rounds, most recently a $150.0M Series C round in Oct 2025. Investors include Index Ventures, Decibel Partners and IVP.
Funding History
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Oct 2025
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Seed through Series C — per-round amounts, valuations, and who invested in each round.
Investors
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