United Kingdom · 
Who invested in Hephaestus?
Hephaestus's investors include CiRi Ventures, Climate Capital, Unruly Capital, Teampact ventures and Prescience Ventures. CiRi Ventures led its latest round.
United Kingdom · Series A startup
Who invested in Hephaestus
One round we have observed, with the 5 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.
Raised this month
Funding summaryUpdated 26 Oct 2026
$17Mraised across 1 round since 2026, from 1 source
- Latest round
- Series A, $17MOct 2026
- Led by
- CiRi Ventures
- Investors
- 5 (1 led)
The rounds
- Oct 2026Series A$17M
Reported by Pulse 2.0
Everyone who backed them
Prescience VenturesVC firm1round
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Quick answers about Hephaestus
How much has Hephaestus raised?
Hephaestus has raised $17M across 1 round since 2026.
When did Hephaestus last raise?
Hephaestus's most recent round was a Series A of $17M in Oct 2026, led by CiRi Ventures.
What was Hephaestus's biggest round?
Its most recent round, $17M in Oct 2026, is also its largest on record.
Who backed Hephaestus first?
Hephaestus's first round on record, in Oct 2026, was backed by CiRi Ventures, Climate Capital and Unruly Capital and 2 others.
What stage is Hephaestus at?
Hephaestus's latest named round is a Series A, in Oct 2026.
Where is Hephaestus based?
Hephaestus is based in the United Kingdom.
Who led Hephaestus's rounds?
CiRi Ventures led the Series A in 2026.
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