Application Specific Semiconductors · Mountain View, CA · Founded 2017 · Privately Held (backing)
Developer of photonic computing and interconnect hardware designed for high-performance data processing and communication in AI infrastructure. Lightmatter is based in Mountain View, CA and was founded in 2017. It is valued at about $4.7 billion as of Oct 2026, set by secondary market price, up 5% since its Series D in Oct 2024. It has raised $822 million across 11 recorded rounds; the latest was a Series D in Dec 2025.
PMV mark · valuation
$4.7B
Oct 2026
Secondary market · $/share
$84
Total raised
$822.5M
Last round
Later Stage VC (Series D)
Dec 2025
Secondary market
monthly marks · 46 months · Jan 2023 – Oct 2026
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Jan 2023marks: indicative $/share, month-end · as of Oct 15, 2026Oct 2026
Monthly marks are a Pro feature — the shape is real, the numbers are waiting.Unlock 46 monthly marks
Membership and data by Private Market View
Prints on record
11
Price range
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Latest print
Jun 2026
First print
Dec 2025
Pro
The prices on Lightmatter
·Every dated print: 11 trades with prices and structures
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 Lightmatter stock.
