Lightmatter Current · Verified less than 14 days ago · Last verified: Oct 16, 2026

Lightmatter: $13.0B valuation, IPO Readiness 70, Series D+. Photonic computing company building silicon photonics chips and interconnects for AI data centers. Series D ($. Track live on The IPO Stack.

Series D+AI Infrastructure / Semiconductorspre-IPO
70
/100
IPO Readiness Score
Grade B — Moderate IPO Readiness
TechStackIPO proprietary score based on funding scale, valuation, stage progression & momentum.
Track Lightmatter →

Photonic computing company building silicon photonics chips and interconnects for AI data centers. Series D ($400M, $4.4B valuation, Oct 2024). CEO Nick Harris called it "probably our last private funding round" — IPO timeline uncertain but expected post-2026.

Valuation
$13.0B
Total Funding
2550000000
Stage
Series D+
Sector
AI Infrastructure / Semiconductors
Headquarters
Mountain View, CA
CEO
Nicholas Harris
IPO Status
pre-IPO

Funding History

November 2019
Series A
$11M
July 2020
Series B
$22M
December 2023
Series C
$155M
October 2024
Series D
$400M
July 2026
IPO
$1.2B
October 2026
Series D+
$500M
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Related Analysis

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Track Lightmatter IPO timeline, funding rounds, investor activity, and valuation on TechStackIPO — the pre-IPO intelligence platform.

Frequently Asked Questions

When is Lightmatter going public? +

Lightmatter has not publicly announced IPO plans. Track TechStackIPO for the latest signals and subscribe to The IPO Stack for weekly updates.

What is Lightmatter's current valuation? +

Lightmatter is valued at $13.0B as of the most recent funding round. This valuation is based on its most recent private funding round tracked by TechStackIPO.

How can I invest in Lightmatter before IPO? +

Accredited investors can access Lightmatter shares through secondary market platforms, pre-IPO investment funds, and broker-dealer platforms that facilitate private company transactions. TechStackIPO's marketplace tracks available access options. Note: pre-IPO investments carry higher risk and limited liquidity compared to public market investing.

What is Lightmatter's IPO Readiness Score? +

Lightmatter scores 70/100 (Grade: B) on TechStackIPO's IPO Readiness Index. The score evaluates funding scale, valuation trajectory, funding momentum, stage progression, and company maturity. Scores above 70 indicate strong near-term IPO potential.

How much total funding has Lightmatter raised? +

Lightmatter has raised 2550000000 in total venture capital and private equity funding, with backing from Matrix Partners, GV, T. Rowe Price.

Who are Lightmatter's key investors? +

Lightmatter's notable investors include Matrix Partners, GV, T. Rowe Price. Full investor details, funding round history, and lead investor breakdowns are available on TechStackIPO.

What sector is Lightmatter in? +

Lightmatter is a AI Infrastructure / Semiconductors company. Photonic computing company building silicon photonics chips and interconnects for AI data centers. Series D ($400M, $4.4.

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