# Cogent Security funding: rounds and investors

> Cogent Security has raised $42M across 1 round since 2026. Investors include Bain Capital Ventures, Greylock and Definition. Every round with its source.

Source: https://millionrounds.com/company/cogent-security (Millionrounds; every figure on the page links to its filing or article)

United States · [Series A startup](https://millionrounds.com/companies)

# Who invested in *Cogent Security*

One round we have observed, with the 4 investors named in it. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.

AI Cybersecurity

Raised 9 months ago

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Funding summary Updated 7 Nov 2026

**$42M** raised across 1 round since 2026, from 1 source

- **Latest round:** Series A, $42M Feb 2026
- **Led by:** Bain Capital Ventures
- **Investors:** 4 (1 led)

See who backed them

## The rounds

- **Feb 2026** Series A **$42M** [Bain Capital Ventures](https://millionrounds.com/fund/bain-capital-ventures) Lead [Greylock](https://millionrounds.com/fund/greylock-partners) [Definition](https://millionrounds.com/fund/definition-capital) [angel investors from OpenAI, Abnormal Security, and Datadog](https://millionrounds.com/fund/angel-investors-from-openai-abnormal-security-and-datadog) Reported by Ventureburn

## Everyone who backed them

[Bain Capital Ventures](https://millionrounds.com/fund/bain-capital-ventures) VC firm **1** round, led 1

[Greylock](https://millionrounds.com/fund/greylock-partners) VC firm **1** round

[Definition](https://millionrounds.com/fund/definition-capital) VC firm **1** round

[angel investors from OpenAI, Abnormal Security, and Datadog](https://millionrounds.com/fund/angel-investors-from-openai-abnormal-security-and-datadog) Angel network **1** round

Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=cogent-security).

## Quick answers about Cogent Security

### Who invested in Cogent Security?

Cogent Security's investors include Bain Capital Ventures, Greylock, Definition and angel investors from OpenAI, Abnormal Security, and Datadog. Bain Capital Ventures led its latest round.

### How much has Cogent Security raised?

Cogent Security has raised $42M across 1 round since 2026.

### When did Cogent Security last raise?

Cogent Security's most recent round was a Series A of $42M in Feb 2026, led by Bain Capital Ventures.

### What was Cogent Security's biggest round?

Its most recent round, $42M in Feb 2026, is also its largest on record.

### Who backed Cogent Security first?

Cogent Security's first round on record, in Feb 2026, was backed by Bain Capital Ventures, Greylock and Definition and 1 others.

### What stage is Cogent Security at?

Cogent Security's latest named round is a Series A, in Feb 2026.

### Where is Cogent Security based?

Cogent Security is based in the United States.

### Who led Cogent Security's rounds?

Bain Capital Ventures led the Series A in 2026.

## Companies like Cogent Security

In the same sector, and raised in the last eighteen months.

[**Uncovr** $12M · Nov 2026](https://millionrounds.com/company/uncovr)[**Ocient** $200M · Nov 2026](https://millionrounds.com/company/ocient)[**Shield AI** $6.0B · Nov 2026](https://millionrounds.com/company/shield-ai)[**Thinking Machines Lab** $9.0B · Nov 2026](https://millionrounds.com/company/thinking-machines-lab)[**firmly** $15M · Nov 2026](https://millionrounds.com/company/firmly)[**Siggy** $6.0M · Nov 2026](https://millionrounds.com/company/siggy)

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