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
No prints on record
No secondary trades in StackOne shares have been recorded yet. When market activity lands it appears here as monthly aggregates and, for platform-recorded trades, dated prints.
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·The complete investor list: 24 names
·Watch StackOne: the Monday email on marks, rounds and moves
Secondary marks are indicative month-end price levels observed across secondary-market trading venues — a level, not a trade — and are the market input to the PrivateMarketView mark. Private share prices aren’t published anywhere. Aggregate figures combine multiple reporting channels — direct participant reports, platform transactions, third-party market intelligence — at monthly granularity. Individually dated prints are a Pro feature and are shown only for transactions recorded on our own platform. Third-party-reported trades are never republished individually, at any tier. Verified prints (✓) have been confirmed against a second source. Prints marked SPV or Forward reflect the structure’s pricing, which can differ from direct share transfers of StackOne stock.
