United States · 
Who invested in Tesser?
Tesser's investors include Anthemis and Castle Island Ventures.
United States · Seed startup
Who invested in Tesser
Funding summaryUpdated 26 Oct 2026
$4.5Mraised across 1 round since 2025, from 1 source
- Latest round
- Seed, $4.5MOct 2025
- Investors
- 2
The rounds
- Oct 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 Tesser 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 Tesser
How much has Tesser raised?
Tesser has raised $4.5M across 1 round since 2025.
When did Tesser last raise?
Tesser's most recent round was a Seed of $4.5M in Oct 2025.
What was Tesser's biggest round?
Its most recent round, $4.5M in Oct 2025, is also its largest on record.
Who backed Tesser first?
Tesser's first round on record, in Oct 2025, was backed by Anthemis and Castle Island Ventures.
What stage is Tesser at?
Tesser's latest named round is a Seed, in Oct 2025.
Where is Tesser based?
Tesser is based in the United States.
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