# Reef.ai funding: rounds and investors

> Reef.ai has raised $5.2M across 1 round since 2023. Investors include Builders VC and Dig Ventures. Every round with its source.

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

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

# Who invested in *Reef.ai*

One round we have observed, with the 2 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

Funding summary Updated 26 Oct 2026

**$5.2M** raised across 1 round since 2023, from 1 source

- **Latest round:** Seed, $5.2M Apr 2023
- **Investors:** 2

See who backed them

## The rounds

- **Apr 2023** Seed **$5.2M** [Builders VC](https://millionrounds.com/fund/builders-vc) [Dig Ventures](https://millionrounds.com/fund/dig-ventures) Source recorded SEC filing: $5.2M sold, first sale Mar 2023

## Founders and team

From the SEC filings it signed: 1 on the team.

- **Brenton Grimes** Executive Officer, Director i

## Everyone who backed them

[Builders VC](https://millionrounds.com/fund/builders-vc) VC firm **1** round

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

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

## Also claim to have backed them

This firm lists Reef.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.

[Blue Startups](https://millionrounds.com/fund/blue-startups) Accelerator Per its own site

## Quick answers about Reef.ai

### Who invested in Reef.ai?

Reef.ai's investors include Builders VC and Dig Ventures.

### How much has Reef.ai raised?

Reef.ai has raised $5.2M across 1 round since 2023.

### When did Reef.ai last raise?

Reef.ai's most recent round was a Seed of $5.2M in Apr 2023.

### What was Reef.ai's biggest round?

Its most recent round, $5.2M in Apr 2023, is also its largest on record.

### Who backed Reef.ai first?

Reef.ai's first round on record, in Apr 2023, was backed by Builders VC and Dig Ventures.

### What stage is Reef.ai at?

Reef.ai's latest named round is a Seed, in Apr 2023.

### Where is Reef.ai based?

Reef.ai is based in the United States.

## Companies like Reef.ai

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

[**SpaceX** $42B · Oct 2026](https://millionrounds.com/company/spacex)[**xPay** $1.5M · Oct 2026](https://millionrounds.com/company/xpay)[**Albert Invent** $20M · Oct 2026](https://millionrounds.com/company/albert-invent)[**FORT Robotics** $39M · Oct 2026](https://millionrounds.com/company/fort-robotics)[**Pika** $216M · Oct 2026](https://millionrounds.com/company/pika)[**Vertical Semiconductor** $84M · Oct 2026](https://millionrounds.com/company/vertical-semiconductor)

## Find investors like these

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