United States · 
Who invested in Fifth Door?
Fifth Door's investors include Y Combinator, Felicis and Rebel Fund.
United States · Seed startup
Who invested in Fifth Door
Funding summaryUpdated 26 Oct 2026
$20Mraised across 1 round since 2025, from 1 source
- Latest round
- Seed, $20MNov 2025
- Investors
- 3
The rounds
- Nov 2025
Everyone who backed them
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Quick answers about Fifth Door
How much has Fifth Door raised?
Fifth Door has raised $20M across 1 round since 2025.
When did Fifth Door last raise?
Fifth Door's most recent round was a Seed of $20M in Nov 2025.
What was Fifth Door's biggest round?
Its most recent round, $20M in Nov 2025, is also its largest on record.
Who backed Fifth Door first?
Fifth Door's first round on record, in Nov 2025, was backed by Y Combinator, Felicis and Rebel Fund.
What stage is Fifth Door at?
Fifth Door's latest named round is a Seed, in Nov 2025.
Where is Fifth Door based?
Fifth Door is based in the United States.
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