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.
| Industry | AI Infrastructure / Semiconductors |
| Stage | Series E |
| IPO Status | Private |
| Valuation | $4.4B |
| Total Funding | $850M |
| Headquarters | Mountain View, CA |
| CEO | Nicholas Harris |
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Lightmatter is valued at $4.4B as of the most recent funding round.
Lightmatter has 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 funding.
Lightmatter is a AI Infrastructure / Semiconductors company. Photonic computing company building silicon photonics chips and interconnects for AI data centers. S.
Lightmatter scores 80/100 on TechStackIPO's IPO readiness index, which evaluates funding stage, valuation trajectory, S-1 filing status, and market timing signals.