StackOne

Business/Productivity Software · Newbury, United Kingdom · Founded 2023 · Privately Held (backing)

Operator of an API standardization platform intended to let customers focus on their core product development while new connectors are added. StackOne is based in Newbury, United Kingdom and was founded in 2023. It was valued at $77.7 million at its early-stage round in May 2025, the last priced event on record. It has raised $24 million across 1 recorded round; the latest was a $3.7 million seed round in Nov 2023.

PMV mark · valuation
$77.7M
Oct 2026
Priced at
its early-stage round
May 2025
Total raised
$24.0M
Last round
Seed Round
Nov 2023

Who backs StackOne?

24 investors
InvestorType
Sequoia CapitalVenture capital
GVVenture capital
Pareto Holdings—
Charles SonghurstOther
Preston-Werner VenturesVenture capital
Microsoft—
Portfolio VenturesAngel
XTX Ventures—
Playfair CapitalVenture capital
Workday VenturesVenture capital
+ 14 more investors · a free account shows the complete list
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StackOne investors

24 investors are on record for StackOne, including Sequoia Capital, GV, Pareto Holdings and Charles Songhurst. By type, the record holds 5 venture capital firms and 2 angel investors. The seed round in Nov 2023 drew 8 investors.

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