# Horizon3 funding: rounds and investors

> Horizon3 has raised $250M across 1 round since 2026. Investors include New Enterprise Associates, NightDragon and Sapphire Ventures.

Source: https://millionrounds.com/company/horizon3 (Millionrounds; every figure on the page links to its filing or article)

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

# Who invested in *Horizon3*

One round we have observed, with the 12 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 3 months ago

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Funding summary Updated 5 Nov 2026

**$250M** raised across 1 round since 2026, from 5 sources

- **Latest round:** Series E, $250M Aug 2026
- **Led by:** New Enterprise Associates and NightDragon
- **Investors:** 12 (2 led)

See who backed them

## The rounds

- **Aug 2026** Series E **$250M** [New Enterprise Associates](https://millionrounds.com/fund/new-enterprise-associates) Lead [NightDragon](https://millionrounds.com/fund/nightdragon) Lead [Sapphire Ventures](https://millionrounds.com/fund/sapphire-ventures) [Craft Ventures](https://millionrounds.com/fund/craft-ventures) [Qualcomm Ventures](https://millionrounds.com/fund/qualcomm-ventures) [Ridge Ventures](https://millionrounds.com/fund/ridge-ventures) [SignalFire](https://millionrounds.com/fund/signalfire) [Acrew Capital](https://millionrounds.com/fund/acrew-capital) [PSG](https://millionrounds.com/fund/providence-equity-partners) [Blue Cloud Ventures](https://millionrounds.com/fund/blue-cloud-ventures) [Prosperity7 Ventures](https://millionrounds.com/fund/prosperity7-ventures) [Demeter Group](https://millionrounds.com/fund/demeter-group) Reported by TechCrunch and 4 others

## Everyone who backed them

[New Enterprise Associates](https://millionrounds.com/fund/new-enterprise-associates) VC firm **1** round, led 1

[NightDragon](https://millionrounds.com/fund/nightdragon) VC firm **1** round, led 1

[Sapphire Ventures](https://millionrounds.com/fund/sapphire-ventures) VC firm **1** round

[Craft Ventures](https://millionrounds.com/fund/craft-ventures) VC firm **1** round

[Qualcomm Ventures](https://millionrounds.com/fund/qualcomm-ventures) Corporate VC **1** round

[Ridge Ventures](https://millionrounds.com/fund/ridge-ventures) VC firm **1** round

[SignalFire](https://millionrounds.com/fund/signalfire) VC firm **1** round

[Acrew Capital](https://millionrounds.com/fund/acrew-capital) VC firm **1** round

[PSG](https://millionrounds.com/fund/providence-equity-partners) VC firm **1** round

[Blue Cloud Ventures](https://millionrounds.com/fund/blue-cloud-ventures) VC firm **1** round

[Prosperity7 Ventures](https://millionrounds.com/fund/prosperity7-ventures) Corporate VC **1** round

[Demeter Group](https://millionrounds.com/fund/demeter-group) Growth equity **1** round

Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=horizon3).

## Quick answers about Horizon3

### Who invested in Horizon3?

Horizon3's investors include New Enterprise Associates, NightDragon, Sapphire Ventures, Craft Ventures and Qualcomm Ventures, and 7 more on record. New Enterprise Associates led its latest round.

### How much has Horizon3 raised?

Horizon3 has raised $250M across 1 round since 2026.

### When did Horizon3 last raise?

Horizon3's most recent round was a Series E of $250M in Aug 2026, led by New Enterprise Associates.

### What was Horizon3's biggest round?

Its most recent round, $250M in Aug 2026, is also its largest on record.

### Who backed Horizon3 first?

Horizon3's first round on record, in Aug 2026, was backed by New Enterprise Associates, NightDragon and Sapphire Ventures and 9 others.

### What stage is Horizon3 at?

Horizon3's latest named round is a Series E, in Aug 2026.

### Where is Horizon3 based?

Horizon3 is based in the United States.

### Who led Horizon3's rounds?

New Enterprise Associates led the Series E in 2026.

## Companies like Horizon3

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

[**Journify** $12M · Nov 2026](https://millionrounds.com/company/journify)[**Nooks** $543M · Nov 2026](https://millionrounds.com/company/nooks)[**Laza Medical** $160M · Nov 2026](https://millionrounds.com/company/laza-medical)[**e2e** $8.0M · Nov 2026](https://millionrounds.com/company/e2e)[**Guava** $13M · Nov 2026](https://millionrounds.com/company/guava)[**Applied Compute** $580M · Nov 2026](https://millionrounds.com/company/applied-compute)

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