No. Lightmatter is private and has not filed to go public. There is no S-1 on file.
What is Lightmatter's valuation in 2026?
Lightmatter is valued at $3.0B as of 2024-Q4, set by its Series C-3 ($13.48M, Oct 2024). That is the last confirmed mark, not a live price — private shares do not trade continuously.
Has Lightmatter filed an S-1?
No public S-1 is on file for Lightmatter.
Who are Lightmatter's investors?
Lightmatter's investors include T. Rowe Price, Fidelity Management & Research Company, GV (Google Ventures), Viking Global Investors, SIP Global Partners, Aliya Capital Partners and 9 more.
Answers are derived from the roster record shown on this page — filing status, last round and confirmed marks. Where the record is silent, the answer says so rather than guessing.
Lightmatter creates photonic chips and interconnect platforms that scale AI supercomputers, using photonics to overcome the bandwidth and reach limitations of electrical interconnects. The company develops a complete photonics interconnect platform including processors (Envise), interconnects (Passage), light engines (Guide), and software (Idiom) to enable clusters of over 100,000 GPUs in a single coherent fabric.
Company Profile
CEO
Nicholas Harris
Founded
2017
HQ
Mountain View, CA
Employees
251-500
Total Raised
$850M
Est. Revenue
$116M (2024-Q4)
Growth
Quadrupled valuation to $4.4B in October 2024 Series D
Last Round
Series C-3 — $13.48M (Oct 2024)
IPO Status
Private
Fundraising Status
Series C-3 · $13.48M · 1y 10mo ago
PrivateTotal raised $850M
Secondary Market
Implied price / share
$87.7
Last round price / share
$80.23
vs last round
+9.3%
Open interest
87
Last round price vs secondary price
Secondary price return by period
Implied per-share price from private secondary transactions, as of Jun 2026. This is a point estimate, not a quote — the feed carries no bid, ask or spread, and a secondary print is evidence of what someone paid on that date rather than a live market. Compare across every tracked name →
Latest Funding Round
Round
Amount
Date
Lead Investor
Post-Money
Series C-3
$13.48M
Oct 2024
—
—
Vertical Intelligence — AI / ML
Open models
0
Downloads (30d)
0
across all models
Followers
3
Attributed to Hugging Face organization "Lightmatter" as of 2026-08-19. Open-weights footprint only — closed-model usage is not publicly measurable. Verify on Hugging Face ↗
Talent Signal
Hiring trend
▶ Hiring steady
28% of roles posted in last 30d
Open roles
67
via greenhouse
Product-build share
96%
engineering, research, product, design
Trajectory
steady
heavy product build — 96% of open roles are product-building functions (engineering/research/product) — 23 of 67 open roles are design.
Actively hiring with no tracked executive churn.
Open roles by month
Open roles by function
■ product-building ■ go-to-market / G&A
Analog IC Design Engineer, AMSAnalog IC Design Engineer, High-SpeedAnalog IC Design Engineer, High-SpeedAnalog IC Design Engineer, Tech LeadAnalog/Mixed Signal ArchitectAnalog/Mixed Signal Architect
Counted from Lightmatter's live job board as of 2026-08-17; role functions classified from posting titles. Open-role counts are an activity signal, not headcount. Refreshed monthly.
Founders & Key People
Nicholas HarrisDarius BunandarThomas Graham
Investors
T. Rowe Price · Fidelity Management & Research Company · GV (Google Ventures) · Viking Global Investors · SIP Global Partners · Aliya Capital Partners · Spark Capital · Matrix Partners · Hewlett Packard Enterprise · Hewlett Packard Pathfinder · Lockheed Martin Ventures · Harvard Innovation Labs · MIT $100K · E1 Ventures · Sahin Boydas
Private-company numbers are not real-time. Reflects publicly disclosed valuations from press releases, news reports, and tender offers as of 2024-Q4. Refreshed quarterly.