United States · 
Who invested in Complement 1?
Complement 1's investors include Blume Ventures and Owl Ventures.
United States · Seed startup
Who invested in Complement 1
Funding summaryUpdated 26 Oct 2026
$16Mraised across 1 round since 2025, from 1 source
- Latest round
- Seed, $16MApr 2025
- Investors
- 2
The rounds
- Apr 2025
Everyone who backed them
Missing a round, or an investor who was in one? Tell us.
Also claim to have backed them
This firm lists Complement 1 as a portfolio company on their own website, but no report of a round names it. They are the firms' own claims, kept apart from the rounds above.
Quick answers about Complement 1
How much has Complement 1 raised?
Complement 1 has raised $16M across 1 round since 2025.
When did Complement 1 last raise?
Complement 1's most recent round was a Seed of $16M in Apr 2025.
What was Complement 1's biggest round?
Its most recent round, $16M in Apr 2025, is also its largest on record.
Who backed Complement 1 first?
Complement 1's first round on record, in Apr 2025, was backed by Blume Ventures and Owl Ventures.
What stage is Complement 1 at?
Complement 1's latest named round is a Seed, in Apr 2025.
Where is Complement 1 based?
Complement 1 is based in the United States.
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