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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

StackOne key facts

as of Oct 2026
  • Operator of an API standardization platform intended to let customers focus on their core product development while new connectors are added.
  • StackOne is valued at approximately $77.7M as of Oct 2026, set at its early-stage round, May 2025; nothing has traded since, per PrivateMarketView’s mark.
  • It has raised $24.0M across 1 recorded rounds; the latest was Seed Round ($3.7M) in Nov 2023.
  • Notable investors include Sequoia Capital, GV, Pareto Holdings, Charles Songhurst, Preston-Werner Ventures — 24 tracked in total.
  • Status: Privately Held (backing).
PrivateMarketView mark
LOW confidence
$77.7M

Valued at $77.7M at its early-stage round, May 2025. Nothing has traded since.

set by its last priced roundas of Oct 2026question about this number?
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StackOne funding rounds

1 rounds
Nov 2023Seed Round$3.7M▮
Full funding history →

StackOne valuation

StackOne was valued at $77.7 million at its early-stage round in May 2025. That is the last priced event on record: no secondary trade or institutional fund mark has moved the figure since.

How much has StackOne raised?

StackOne has raised $24 million in total; 1 of its rounds is on record. The largest on record was a $3.7 million seed round in Nov 2023.

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.

Comparable companies

Comparable business/productivity software names by valuation on PrivateMarketView: HockeyStack ($79 million), PointFive ($78 million) and Relevance AI ($77.4 million).

About StackOne

Operator of an API standardization platform intended to let customers focus on their core product development while new connectors are added. The company's platform develops applications that integrate all the tools and ensure the security of customer data, enabling clients to detect new candidate applications in real-time and synchronize customer contacts and accounts.

Industry
Business/Productivity Software
Sector
Information Technology
HQ
Newbury, United Kingdom
Founded
2023
Employees
48
Ownership
Privately Held (backing)

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