# Thalamos funding: rounds and investors

> Thalamos has raised $521K across 2 rounds since 2021. Investors include SyndicateRoom and Arca. Every round with its source.

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

United Kingdom · [Venture startup](https://millionrounds.com/companies)

# Who invested in *Thalamos*

2 rounds we have observed, with the 2 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.

Healthcare

Funding summary Updated 26 Oct 2026

**$521K** raised across 2 rounds since 2021, from 2 sources

- **Latest round:** Venture Sept 2022
- **Biggest round:** $521K Round · May 2021
- **Investors:** 2

See who backed them

## The funding story

Each circle is a round, placed by date and sized by amount. The line above is the running total.

2022

**$521K** Round

**?** Venture

- **First round:** Round, $521K
- **Biggest round:** $521K
- **Between rounds:** 15 months

## The rounds

- **Sept 2022** Venture **Amount undisclosed** *2 new* [SyndicateRoom](https://millionrounds.com/fund/syndicateroom) [Arca](https://millionrounds.com/fund/arca) Source recorded
- **May 2021** Round **$521K** No investor was named in the report. Shares issued, filed with Companies House (SH01); no report of this raise yet

## Funding filed with regulators

Thalamos filed 2 raises, $521K in all. Filings say how much was sold and to how many investors; they never name the investors.

- Sept 2023 **Amount not stated** UK share allotment
- May 2021 **$521K** UK share allotment

## Founders and team

From Thalamos's own website: 2 founders, 3 on the team.

**Arden Tomison** Founder & Chief Executive Officer

**Ross Tomison** Co-Founder of Thalamos & Chief Operating Officer

- **David Williams** Chief Technical Officer
- **Dr Iain Grant** Clinical Safety Officer & Medical Director
- **Zoe Seager** Client Director

## Who was in which round

The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.

**Round** 2021 **Venture** 2022 [SyndicateRoom](https://millionrounds.com/fund/syndicateroom) [Arca](https://millionrounds.com/fund/arca)

## Everyone who backed them

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

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

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

## Quick answers about Thalamos

### Who invested in Thalamos?

Thalamos's investors include SyndicateRoom and Arca.

### How much has Thalamos raised?

Thalamos has raised $521K across 2 rounds since 2021. One round did not disclose an amount, so the total is a floor.

### When did Thalamos last raise?

Thalamos's most recent round was a Venture in Sept 2022.

### What was Thalamos's biggest round?

Thalamos's largest round on record is $521K, in May 2021.

### Who backed Thalamos first?

Thalamos's first round on record, in Sept 2022, was backed by SyndicateRoom and Arca.

### What stage is Thalamos at?

Thalamos's latest named round is a Venture, in Sept 2022.

### Where is Thalamos based?

Thalamos is based in the United Kingdom.

## Companies like Thalamos

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

[**Coherence Neuro** $55M · Oct 2026](https://millionrounds.com/company/coherence-neuro)[**XRlabs** $8.4M · Oct 2026](https://millionrounds.com/company/xrlabs)[**CMR Surgical** $1.1B · Oct 2026](https://millionrounds.com/company/cmr-surgical)[**MintNeuro** $26M · Oct 2026](https://millionrounds.com/company/mintneuro)[**52North** $4.3M · Sept 2026](https://millionrounds.com/company/52north)[**Aptadir Therapeutics** $47M · Sept 2026](https://millionrounds.com/company/aptadir-therapeutics)

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