Bloomfield, CT · Founded 2003 · Privately Held (backing)
Manufacturer of advanced rotary internal combustion engines intended for unmanned aerial vehicles and the automotive industry. LiquidPiston is based in Bloomfield, CT and was founded in 2003. Its last reported valuation was $69.1 million in Jun 2021. It has raised $74.4 million across 7 recorded rounds; the latest was a $500,009 seed round in Mar 2026.
Last reported valuation
$69.1M
Oct 2026
Priced at
—
Total raised
$74.4M
Last round
Seed Round
Mar 2026
No prints on record
No secondary trades in LiquidPiston 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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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 LiquidPiston stock.
