StackOnerevenue & funding
Other Collaboration SoftwareLondon, England, United KingdomFounded 2023CEO Romain Sestier
StackOne is an Other Collaboration Software company based in London, founded in 2023.
StackOne revenue
StackOne has not published its revenue. GetLatka estimates it at about $4.7M a year (September 2025).
| As of | Revenue | Source |
|---|---|---|
| Sep 2025 | $4.7MEST. | GetLatka estimate |
StackOne funding rounds & investors
StackOne has raised $23.6M across two rounds since 2024. The latest was a $20M Series A in May 2025.
| Date | Round | Raised |
|---|---|---|
| May 2025 | Series A | $20M |
| Mar 2024 | Seed | $3.6M |
| Total raised | $23.6M |
StackOne CEO, founders & employees
Romain Sestier founded StackOne in 2023 and runs it as CEO. StackOne has 43 employees (May 2025, LinkedIn).
- Romain SestierFounder & CEO
StackOne FAQ
What is StackOne's revenue?
GetLatka estimates StackOne's revenue at about $4.7M a year (September 2025). The company hasn't published its own figure.
How much funding has StackOne raised?
StackOne has raised $23.6M across two funding rounds. The latest was a $20M Series A in May 2025.
How many employees does StackOne have?
StackOne has 43 employees as of May 2025, according to LinkedIn.
Who is the CEO of StackOne?
Romain Sestier is the CEO of StackOne and founded the company in 2023.
Who founded StackOne?
Romain Sestier founded StackOne in 2023.
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How this page is sourced
1 from public sources · 1 estimate. Founder figures link to the second they were said; public figures name their source; estimates are marked EST. and say whose they are. Not financial advice.
Updated Aug 10, 2026Data disclaimerReport a correctionClaim this profileRun StackOne? Join the podcast