Who invested in Optellum

6 rounds we have observed, with the 3 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.

BiotechHealthcare

Raised 7 months ago

Funding summaryUpdated 26 Oct 2026

$30Mraised across 6 rounds since 2019, from 6 sources

$1.3MSeed$14MSeries A$7.2MRound$1.9MRound$5.7MRound$136KRound

Latest round: Round, $136KMar 2026
Biggest round: $14MSeries A · Sept 2022
Investors: 3

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.

2020202120222023202420252026

$1.3MSeed$14MSeries A$7.2MRound$1.9MRound$5.7MRound$136KRound

First round: Seed, $1.3M
Biggest round: $14M
Usual gap between rounds: 5 months

The rounds

Mar 2026
Round$136K
No investor was named in the report.
Shares issued, filed with Companies House (SH01); no report of this raise yet
Nov 2025
Round$5.7M
No investor was named in the report.
Shares issued, filed with Companies House (SH01); no report of this raise yet
Jul 2025
Round$1.9M
No investor was named in the report.
Shares issued, filed with Companies House (SH01); no report of this raise yet
Mar 2025
Round$7.2M
No investor was named in the report.
Shares issued, filed with Companies House (SH01); no report of this raise yet
Sept 2022
Series A$14M2 new
- IQ Capital
- Mercia Tech
Source recorded
Jul 2019
Seed$1.3M1 new
- Luminous Ventures
Reported by Tech.eu

Funding filed with regulators

Optellum filed 8 raises, $34M in all. Filings say how much was sold and to how many investors; they never name the investors.

Mar 2026$136KUK share allotment
Dec 2025$148KUK share allotment
Nov 2025$5.6MUK share allotment
Jul 2025$1.9MUK share allotment
Mar 2025$7.2MUK share allotment
Sept 2022$2.1MUK share allotment
Sept 2022$2.3MUK share allotment
Sept 2022$14MUK share allotment

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.

Seed2019Series A2022Round2025Round2025Round2025Round2026

IQ Capital

Mercia Tech

Luminous Ventures

Everyone who backed them

IQ CapitalVC firm1round

Mercia TechVC firm1round

Luminous VenturesVC firm1round

Missing a round, or an investor who was in one? Tell us.

Also claim to have backed them

These 2 firms list Optellum as a portfolio company on their own websites, but no report of a round names them. They are the firms' own claims, kept apart from the rounds above.