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LEDGER2026 YTD $21.4B253 roundslast Oct 20, 2026

Series B

Onyx Security raises $113M Series B

$113M

By Israel Rounds desk. Edited by Eliran Yihye. Published . Updated .

Onyx Security raised $113M in a Series B round1, announced Jul 30, 20261, led by Bessemer Venture Partners1.

Onyx Security has raised $148M across 2 recorded rounds.1,2

Lead investor

  • Bessemer Venture Partners

Onyx Security funding path

Funding rounds raised by Onyx Security, oldest to newest$100M$200MSeries A, Mar 12, 2026: $35M$35MASeries B, Jul 30, 2026: $113M$113MB

Onyx Security funding history

2 rounds

Funding rounds raised by Onyx Security, newest first
RoundAnnouncedAmountLead investors
Series BJul 30, 2026$113MBessemer Venture Partners
Series AMar 12, 2026$35MConviction
Total raised$148M

Sources

  1. 1CTech, Jul 30, 2026. “AI security startup Onyx raises $113 million Series B at $640 million valuation”
  2. 2CTech, Mar 12, 2026. “Cyber startup Onyx Security raises $35 million to control AI agents in organizations”

How much did Onyx Security raise in its Series B?

Onyx Security raised $113M in its Series B, announced Jul 30, 2026.

Who led Onyx Security’s Series B?

The round was led by Bessemer Venture Partners.

Which investors took part in Onyx Security’s Series B?

Participants: Bessemer Venture Partners.

How much has Onyx Security raised in total?

Onyx Security has raised $148M across 2 recorded rounds.