Lightmatter: $4.4B valuation, IPO Readiness 80, Series E. Filed S-1 with the SEC on April 2026 — IPO actively in progress. Track live on The IPO Stack.
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.
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Track Lightmatter IPO timeline, funding rounds, investor activity, and valuation on TechStackIPO — the pre-IPO intelligence platform.
Lightmatter filed its S-1 registration statement with the SEC on April 12, 2026. The IPO timeline depends on SEC review and market conditions. Track the latest signals on TechStackIPO.
Lightmatter is valued at $4.4B as of the most recent funding round. This valuation is based on its most recent private funding round tracked by TechStackIPO.
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.
Lightmatter scores 80/100 (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.
Yes — Lightmatter filed an S-1 registration statement with the SEC on April 12, 2026, indicating an active IPO process.
Lightmatter has raised $850M in total venture capital and private equity funding, with backing from T. Rowe Price, GV, Matrix Partners.
Lightmatter's notable investors include T. Rowe Price, GV, Matrix Partners. Full investor details, funding round history, and lead investor breakdowns are available on TechStackIPO.
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.