United Kingdom · 
Who invested in Thalamos?
Thalamos's investors include SyndicateRoom and Arca.
2022
$521KRound?Venture
United Kingdom · Venture startup
Who invested in Thalamos
Funding summaryUpdated 26 Oct 2026
$521Kraised across 2 rounds since 2021, from 2 sources
- Latest round
- VentureSept 2022
- Biggest round
- $521KRound · May 2021
- Investors
- 2
The funding story
Each circle is a round, placed by date and sized by amount. The line above is the running total.
- First round
- Round, $521K May 2021
- Biggest round
- $521K Round · May 2021
- Between rounds
- 15 months from the last two
The rounds
- Sept 2022
- May 2021Round$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 2023Amount not statedUK share allotment
- May 2021$521KUK share allotment
Founders and team
From Thalamos's own website: 2 founders, 3 on the team.
Arden TomisonFounder & Chief Executive Officer
Ross TomisonCo-Founder of Thalamos & Chief Operating Officer
- David WilliamsChief Technical Officer
- Dr Iain GrantClinical Safety Officer & Medical Director
- Zoe SeagerClient 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.
Everyone who backed them
Missing a round, or an investor who was in one? Tell us.
Quick answers about Thalamos
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.
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