Nanjing, China · Founded 2015 · Privately Held (backing)
Provider of treatment solutions for agricultural pollution built for advancing green ecological agriculture with a commitment to sustainable, environmentally friendly waste treatment and resource… Sweeper is based in Nanjing, China and was founded in 2015. Its last reported valuation was $61.8 million in Sep 2021. It has raised $5.9 million.
Last reported valuation
$61.8M
Oct 2026
Priced at
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Total raised
$5.9M
Last round
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No prints on record
No secondary trades in Sweeper 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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·Watch Sweeper: 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 Sweeper stock.
