Who invested in Reactor?
Reactor's investors include Lightspeed Venture Partners, Abstract Ventures, Amplify Partners, WndrCo and Sky9 Capital, and 1 more on record. Lightspeed Venture Partners led its latest round.
Who invested in Reactor
One round we have observed, with the 6 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 5 months ago
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Funding summaryUpdated 5 Nov 2026
$59Mraised across 1 round since 2026, from 1 source
- Latest round
- Series A, $59MMay 2026
- Led by
- Lightspeed Venture Partners
- Investors
- 6 (1 led)
The rounds
- May 2026Series A$59M
Reported by VentureburnSEC filing: $25M sold
Everyone who backed them
Missing a round, or an investor who was in one? Tell us.
Also claim to have backed them
These 3 firms list Reactor 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.
Quick answers about Reactor
How much has Reactor raised?
Reactor has raised $59M across 1 round since 2026.
When did Reactor last raise?
Reactor's most recent round was a Series A of $59M in May 2026, led by Lightspeed Venture Partners.
What was Reactor's biggest round?
Its most recent round, $59M in May 2026, is also its largest on record.
Who backed Reactor first?
Reactor's first round on record, in May 2026, was backed by Lightspeed Venture Partners, Abstract Ventures and Amplify Partners and 3 others.
What stage is Reactor at?
Reactor's latest named round is a Series A, in May 2026.
Who led Reactor's rounds?
Lightspeed Venture Partners led the Series A in 2026.
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In the same sector, and raised in the last eighteen months.
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