United States · 
Who invested in Sidenote?
Sidenote's investors include Y Combinator.
United States · Pre-seed startup
Who invested in Sidenote
Funding summaryUpdated 26 Oct 2026
$500Kraised across 1 round since 2023, from 1 source
- Latest round
- Pre-seed, $500KJul 2023
- Investors
- 1
The rounds
- Jul 2023
Founders and team
From Sidenote's own website: 2 on the team.
Everyone who backed them
Missing a round, or an investor who was in one? Tell us.
Quick answers about Sidenote
How much has Sidenote raised?
Sidenote has raised $500K across 1 round since 2023.
When did Sidenote last raise?
Sidenote's most recent round was a Pre-seed of $500K in Jul 2023.
What was Sidenote's biggest round?
Its most recent round, $500K in Jul 2023, is also its largest on record.
Who backed Sidenote first?
Sidenote's first round on record, in Jul 2023, was backed by Y Combinator.
What stage is Sidenote at?
Sidenote's latest named round is a Pre-seed, in Jul 2023.
Where is Sidenote based?
Sidenote is based in the United States.
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In the same sector, and raised in the last eighteen months.
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