# Castellum.AI funding: rounds and investors

> Castellum.AI has raised $8.5M across 1 round since 2025. Investors include Curql, Accel and Newfund Capital. Every round with its source.

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

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

# Who invested in *Castellum.AI*

One round we have observed, with the 8 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 Fintech Regtech

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Funding summary Updated 5 Nov 2026

**$8.5M** raised across 1 round since 2025, from 4 sources

- **Latest round:** Series A, $8.5M Jul 2025
- **Led by:** Curql
- **Investors:** 8 (1 led)

See who backed them

## The rounds

- **Jul 2025** Series A **$8.5M** [Curql](https://millionrounds.com/fund/curql) Lead [Accel](https://millionrounds.com/fund/accel) [Newfund Capital](https://millionrounds.com/fund/newfund) [Spider Capital](https://millionrounds.com/fund/spider-capital) [Framework Venture Partners](https://millionrounds.com/fund/framework-venture-partners) [Strandview Capital](https://millionrounds.com/fund/strandview-capital) [Remarkable Ventures](https://millionrounds.com/fund/remarkable-ventures) [Cameron Ventures](https://millionrounds.com/fund/cameron-ventures) Reported by AlleyWatch and 3 others

## Founders and team

From Castellum.AI's own website: 1 founder, 2 on the team.

**Peter Piatetsky** Founder & CEO

- **Lee Roggenkamp** Chief Technology Officer
- **Marissa Venuto** Chief Operating Officer

## Everyone who backed them

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

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

[Newfund Capital](https://millionrounds.com/fund/newfund) VC firm **1** round

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

[Framework Venture Partners](https://millionrounds.com/fund/framework-venture-partners) VC firm **1** round

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

[Strandview Capital](https://millionrounds.com/fund/strandview-capital) Corporate VC **1** round

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

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

## Also claim to have backed them

This firm lists Castellum.AI as a portfolio company on their own website, but no report of a round names it. They are the firms' own claims, kept apart from the rounds above.

[Ossian Capital](https://millionrounds.com/fund/ossian-capital) VC firm Per its own site

## Quick answers about Castellum.AI

### Who invested in Castellum.AI?

Castellum.AI's investors include Curql, Accel, Newfund Capital, Spider Capital and Framework Venture Partners, and 3 more on record. Curql led its latest round.

### How much has Castellum.AI raised?

Castellum.AI has raised $8.5M across 1 round since 2025.

### When did Castellum.AI last raise?

Castellum.AI's most recent round was a Series A of $8.5M in Jul 2025, led by Curql.

### What was Castellum.AI's biggest round?

Its most recent round, $8.5M in Jul 2025, is also its largest on record.

### Who backed Castellum.AI first?

Castellum.AI's first round on record, in Jul 2025, was backed by Curql, Accel and Newfund Capital and 5 others.

### What stage is Castellum.AI at?

Castellum.AI's latest named round is a Series A, in Jul 2025.

### Where is Castellum.AI based?

Castellum.AI is based in the United States.

### Who led Castellum.AI's rounds?

Curql led the Series A in 2025.

## Companies like Castellum.AI

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)[**Agrani Labs** $123M · Nov 2026](https://millionrounds.com/company/agrani-labs)[**Applied Compute** $580M · Nov 2026](https://millionrounds.com/company/applied-compute)

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