United Kingdom · 
Who invested in CSignum?
CSignum's investors include Scottish Enterprise, Raptor Group, British Business Bank and Par Equity.
2026
$8.0MSeries A$3.5MVenture
United Kingdom · Venture startup
Who invested in CSignum
Funding summaryUpdated 26 Oct 2026
$12Mraised across 2 rounds since 2025, from 2 sources
$8.0MSeries A$3.5MVenture
- Latest round
- Venture, $3.5MSept 2026
- Biggest round
- $8.0MSeries A · Apr 2025
- Investors
- 4
The funding story
Each circle is a round, placed by date and sized by amount. The line above is the running total.
- First round
- Series A, $8.0M Apr 2025
- Biggest round
- $8.0M Series A · Apr 2025
- Between rounds
- 17 months from the last two
The rounds
- Sept 2026Venture$3.5M1 new2 returning
Source recordedSEC filing: $761K sold
- Apr 2025
Funding filed with regulators
CSignum filed 3 raises, $12M in all. Filings say how much was sold and to how many investors; they never name the investors.
- Aug 2026$3.6MUK share allotment
- Apr 2025$8.5MUK share allotment
- May 2023Amount not statedUK share allotment
Founders and team
From CSignum's own website: 5 on the team.
- Jonathan ReevesChief Executive Officer
- Graeme BoyceChief Operations Officer
- Mark RhodesChief Technology Officer
- Jackie LonieHead of Business Support
- Steve BuchanService Delivery Manager
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 CSignum
How much has CSignum raised?
CSignum has raised $12M across 2 rounds since 2025.
When did CSignum last raise?
CSignum's most recent round was a Venture of $3.5M in Sept 2026.
What was CSignum's biggest round?
CSignum's largest round on record is $8.0M (Series A), in Apr 2025.
Who backed CSignum first?
CSignum's first round on record, in Apr 2025, was backed by Scottish Enterprise, Par Equity and Raptor Group.
What stage is CSignum at?
CSignum's latest named round is a Venture, in Sept 2026.
Where is CSignum based?
CSignum is based in the United Kingdom.
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