Lightmatter
PrivateLast Round
Series D
Oct 16, 2024
Est. Valuation
$4.4B
Total Funding Raised
$822M
Momentum
Top 5%
of companies Caplight tracks
Company Overview
Lightmatter is a semiconductor company that develops photonic computing and interconnect hardware to enhance the speed and energy efficiency of artificial intelligence infrastructure.
Sector
AI, Data & Cloud Infrastructure
Verticals
AI Training Infrastructure, Computing Hardware, Semiconductors, Cloud Infrastructure
Business Model
B2B
Customer Profile
Hardware Sales, Services & Consulting, Subscription SaaS
AI Layer
Infrastructure
Keywords
Price History
Caplight MarketPrice™ estimate for Lightmatter, published with a 90-day delay.
Caplight MarketPrice™
$51.58
per share, as of April 2026
-8.4%
7-month change
Caplight MarketPrice™ is an estimate of private secondary market pricing, shown here on a delayed basis for illustrative purposes only. It may be incomplete, is subject to change, and may not be relied upon for any purpose or considered investment advice.
Lightmatter Comparables
Compare Lightmatter with similar companies based on industry and business-model similarity.
Lightmatter Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Series D | Oct 16, 2024 | ||||
| Series C Extension | Dec 19, 2023 | ||||
| Series C | May 31, 2023 | ||||
| Series B | May 6, 2021 | ||||
| Series A Extension | Feb 26, 2019 | ||||
Series A | Feb 5, 2018 |
Secondary Market Activity
Bids, offers, and trades by month
| Operation | Date | Price | Size | Share Class | Structure |
|---|---|---|---|---|---|
OFFER |
Lightmatter Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| Matrix | Series A Extension, Series C Extension, Series B, Series A |
| 3F Ventures | Series C |
| The Engine | Series C Extension, Series C |
| Engine Ventures | Series C Extension, Series C |
| GV | Series C, Series B, Series A Extension, Series C Extension |
| Hewlett Packard Pathfinder | Series B |
| Hamilton Lane | Series C Extension, Series C |
Market signals
Structured signals derived from secondary market and firmographic data.
- Apr 25, 2026
Programs ramping to High Volume Manufacturing (HVM).
- Apr 25, 2026
Job posting reveals over 13 active hardware programs.
Lightmatter Filings
SEC and related filings with document metadata.
| Typed | Date | Amount Offered | Amount Sold | Filling | Pages | Download |
|---|---|---|---|---|---|---|
Mock Valuation | Sign Up to view | Mock Valuation | Sign Up to view | Mock Valuation | Sign Up to view | Mock Valuation |
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Frequently Asked Questions
Common questions about Lightmatter's valuation, stock price, and market status.