Other Commercial Products · Los Angeles, CA · Founded 2005 · Acquired/Merged (Operating Subsidiary)
Manufacturer of reverse osmosis membranes intended for water desalination and water reuse. NanoH2O is based in Los Angeles, CA and was founded in 2005. Its last known valuation is $146 million (May 2014). It has raised $958 million across 1 recorded round; the latest was a $958 million growth round in Dec 2025.
Last price · $/share
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Implied valuation
$146.3M
Total raised
$958.1M
Last round
PE Growth/Expansion
Dec 2025
No prints on record
No secondary trades in NanoH2O 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 NanoH2O stock.
