Germany · 
Who invested in Neptune?
Neptune's investors include Alumni Ventures, Flybridge, Floodgate, Coşay Altuğ and John Engle.
20252026
$2.5MPre-seed$1.5MSeed
Germany · Seed startup
Who invested in Neptune
Funding summaryUpdated 26 Oct 2026
$4.0Mraised across 2 rounds since 2024, from 2 sources
$2.5MPre-seed$1.5MSeed
- Latest round
- Seed, $1.5MFeb 2026
- Biggest round
- $2.5MPre-seed · Sept 2024
- Investors
- 5
The funding story
Each circle is a round, placed by date and sized by amount. The line above is the running total.
- First round
- Pre-seed, $2.5M Sept 2024
- Biggest round
- $2.5M Pre-seed · Sept 2024
- Between rounds
- 18 months from the last two
The rounds
- Feb 2026
- Sept 2024
Who was in which round
The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.
Everyone who backed them
Coşay AltuğVC firm1round
John EngleVC firm1round
Missing a round, or an investor who was in one? Tell us.
Quick answers about Neptune
How much has Neptune raised?
Neptune has raised $4.0M across 2 rounds since 2024.
When did Neptune last raise?
Neptune's most recent round was a Seed of $1.5M in Feb 2026.
What was Neptune's biggest round?
Neptune's largest round on record is $2.5M (Pre-seed), in Sept 2024.
Who backed Neptune first?
Neptune's first round on record, in Sept 2024, was backed by Alumni Ventures, Flybridge and Floodgate.
What stage is Neptune at?
Neptune's latest named round is a Seed, in Feb 2026.
Where is Neptune based?
Neptune is based in Germany.
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